A clamping assembly for conformal welding of a turbine seat ring and a volute

Abstract

The present invention relates to the field of welding processing, specifically a clamping assembly for form-fitting welding of a turbine seat ring and a volute, comprising a main control base, a lifting assembly and a mating lubrication assembly, wherein the upper end of the main control base is rotatably provided with a rotating tray, and the upper end of the rotating tray is provided with a volute through a clamping assembly, and the clamping assembly comprises four clamping control boxes. When the turbine volute and the seat ring need to be form-fitted welded, the two are supported and lifted by the rotatable rotating tray. When supporting and lifting, the volute is provided with a quickly adjustable horizontal positioning support by the clamping assembly, and the seat ring is provided with a stable and fast horizontal support by the lifting assembly, and then the two are adapted to be connected, thereby improving the efficiency of welding adjustment and saving time and effort. In addition, the clamping assembly and the lifting assembly can be quickly adapted to the size of the volute and the seat ring, and have stronger applicability. The mating lubrication assembly can improve the use stability of the clamping assembly according to the lifting and lowering activities of the C-shaped lifting clamp.

Description

Technical Field

[0001] The invention relates to the field of welding processing, in particular to a clamping assembly for conformal welding of a turbine seat ring and a volute. Background Art

[0002] A water turbine is a power machine that converts the energy of water flow into rotational mechanical energy. When water flows through the impeller's blade path, the direction and velocity of the water flow are constantly changing due to the constraints of the impeller blade shape and the flow path cross-section. The runner rotates around its axis under the reaction force of the water flow, converting water energy into mechanical energy. When processing a water turbine, the welded volute and seat ring must be welded first, and the positions of the two must be positioned and clamped during welding.

[0003] The invention of the existing publication number CN116944743B discloses a self-adjusting support tooling for welding a turbine volute ring seat, which includes a base, an upper ring plate, a lower ring plate and a guide vane. By driving the servo motor to rotate 30 degrees, the guide vane can be automatically inserted between the upper ring plate and the lower ring plate for welding. There is no need for workers to insert the guide vane between the upper ring plate and the lower ring plate one by one. The degree of automation is higher and the welding processing efficiency is higher. The above scheme can realize the automatic placement and positioning of the guide vane through the cooperation between the various mechanisms. When the seat ring and the volute are welded after the welding is completed, since the pipe diameter of the volute is changed, the upper and lower end faces of the seat ring are in a horizontal posture. When the two are welded, the volute needs to be placed horizontally, or the seat ring needs to be placed correspondingly at an angle to facilitate the follow-up welding operation at the joint of the two. However, repeated adjustment operations are required during placement and clamping, which is time-consuming and labor-intensive. In addition, the applicability is poor when used for welding volutes and seat rings of different diameters. Summary of the Invention

[0004] The object of the present invention is to provide a clamping assembly for conformal welding of a turbine seat ring and a volute, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a clamping assembly for conformal welding of a turbine seat ring and a volute, comprising:

[0006] A main control base, wherein the upper end of the main control base is rotatably provided with a rotating tray, the upper end of the rotating tray is provided with a volute through a clamping assembly, the clamping assembly includes four clamping control boxes, each of which is movably provided with a clamping movable seat, and the upper end of the clamping movable seat is provided with a C-shaped lifting splint for lifting, and the upper end of the C-shaped lifting splint is in contact with the lower end of the volute;

[0007] A lifting assembly is provided at the center of the upper end of the rotating tray, and the lifting assembly includes a prismatic support column, a support truncated table, four fixed support rods and four extended support rods, wherein the upper ends of the four extended support rods are respectively in contact with the lower end of the seat ring;

[0008] A matching lubrication component is provided at the upper end of the clamping movable seat close to the C-shaped lifting clamping plate, and the matching lubrication component includes an oil storage chamber and a synchronous piston rod.

[0009] Preferably, the upper end of the clamping control box is provided with an adaptive movable groove, and a control screw is horizontally provided in the adaptive movable groove. A control screw groove is provided through the center of the lower end of the clamping movable seat. The clamping movable seat is horizontally slidably inserted into the adaptive movable groove and movably sleeved with the control screw through the control screw groove.

[0010] Preferably, a strip-shaped through-groove is provided on one side of the adaptive movable groove, and the clamping movable seat is located on one side of the strip-shaped through-groove, and is respectively connected to a first control joint and a second control joint, and the first control joint and the second control joint are respectively movably arranged to pass through the strip-shaped through-groove.

[0011] Preferably, a lifting access groove is horizontally opened on one side of the first control joint in the clamping movable seat, and lifting cylinder grooves are vertically opened on both sides of the upper end of the lifting access groove. Two lifting columns are vertically symmetrically provided at the lower end of the C-shaped lifting splint, and the lower ends of the two lifting columns are respectively movable through the upper and lower parts of the clamping movable seat through sealing rings and inserted into the lifting cylinder groove, and a lifting piston is provided at the lower end of the lifting column placed in the lifting cylinder groove.

[0012] Preferably, a limiting ring is provided at the upper end of the lifting cylinder groove, and a push-back access groove is opened on the inner circumference of the limiting ring. Both push-back access grooves are connected to the second control joint, and the inner diameter of the limiting ring is smaller than the diameter of the lifting piston.

[0013] Preferably, a rotating control seat is provided at the center of the rotating tray, the lower end of the rotating control seat is rotatably connected to the upper end of the main control base, a lifting control slot is opened in the rotating control seat, a lifting control cylinder is vertically provided in the lifting control slot, a prismatic support column is vertically provided at the upper end center of the lifting control cylinder, and the upper end of the prismatic support column is vertically movable through the rotating control seat.

[0014] Preferably, the supporting table is horizontally arranged at the upper end of the prismatic supporting column, and four fixed support rods are horizontally symmetrically arranged on the outer peripheral side of the supporting table. One side of the four fixed support rods is movably sleeved with an extension support rod, and the side of the extension support rod away from the supporting table is rotatably connected with an adjustment screw through a threaded plate, and one end of the adjustment screw is fixed to the center of the support rod through a threaded plug.

[0015] Preferably, an adapting groove is provided on the upper end of one side of the clamping control box close to the supporting table, the width of the adapting groove is greater than the width of the extended support rod, and the extended support rod is arranged corresponding to the adapting groove.

[0016] Preferably, an oil storage chamber is provided in the clamping movable seat between the two lifting cylinder grooves, and a piston groove is provided at the upper end of the oil storage chamber through the clamping movable seat, and a partition plate is horizontally provided in the center of the piston groove. The synchronous piston rod is vertically movable and inserted into the center of the partition plate. The synchronous piston rod passes through the upper and lower ends of the partition plate and is respectively provided with a pressing piston and a compression piston. The upper end of the pressing piston extends out of the piston groove, and the synchronous piston rod is located between the pressing piston and the partition plate and is sleeved with a return spring. When the C-shaped lifting splint is lowered to the maximum extent, the lower end of the C-shaped lifting splint is in contact with the upper end of the pressing piston.

[0017] Preferably, a valve groove is provided at the upper end of the control screw groove at the lower end of the oil storage cavity, and a one-way valve is inserted in the valve groove.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] When it is necessary to weld the turbine volute and seat ring in accordance with the form, the two are supported and lifted by a rotatable rotating tray. When supporting and lifting, the volute is supported by a quickly adjustable horizontal positioning support through the clamping assembly, and the seat ring is supported horizontally smoothly and quickly by the lifting assembly. The two are then adapted to be connected, which improves the efficiency of welding adjustment and saves time and effort. In addition, the clamping assembly and the lifting assembly can be quickly adapted to the size of the volute and seat ring, and are more applicable. In combination with the lubrication assembly, the lifting and lowering activities of the C-shaped lifting plate can be adjusted to improve the stability of the clamping assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the present invention from a first perspective;

[0021] Figure 2 For the present invention Figure 1 Schematic diagram of part A;

[0022] Figure 3 This is a schematic diagram of the structure of the present invention from a second viewing angle;

[0023] Figure 4 For the present invention Figure 3 Schematic diagram of part B;

[0024] Figure 5 This is a schematic diagram of the installation structure of the clamping control box of the present invention;

[0025] Figure 6 For the present invention Figure 5 Schematic diagram of the C part;

[0026] Figure 7 This is a schematic cross-sectional view of the extended support rod connection structure of the present invention;

[0027] Figure 8 For the present invention Figure 7Schematic diagram of the D part;

[0028] Figure 9 For the present invention Figure 7 Schematic diagram of part E;

[0029] Figure 10 This is a cross-sectional view of the connection between the clamping movable seat and the C-shaped lifting splint of the present invention;

[0030] Figure 11 For the present invention Figure 10 Schematic diagram of the F part.

[0031] In the figure: main control base 1, rotating tray 2, clamping control box 3, adaptable movable groove 4, clamping movable seat 5, C-shaped lifting splint 6, control screw 7, volute 8, seat ring 9, supporting table 10, fixed support rod 11, extended support rod 12, rotating control seat 13, lifting control cylinder 14, prismatic support column 15, adjusting screw 16, strip-shaped through groove 17, first control joint 18, second control joint 19, lifting access groove 20, lifting cylinder groove 21, lifting column 22, push-back access groove 23, oil storage chamber 24, synchronous piston rod 25, pressing piston 26, compression piston 27, return spring 28, control screw groove 29, one-way valve 30, lifting piston 31, adapting groove 32. DETAILED DESCRIPTION

[0032] In order to clearly and completely describe the objectives and technical solutions of the present invention and make the advantages more clearly understood, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] See also Figures 1-11 , the present invention provides the following technical solutions:

[0034] Embodiment 1: A clamping assembly for welding a turbine seat ring and a volute, comprising a main control base 1, a rotating tray 2 is rotatably provided on the upper end of the main control base 1, a volute 8 is provided on the upper end of the rotating tray 2 through a clamping assembly, the clamping assembly comprises four clamping control boxes 3, each of which is provided with a movable clamping seat 5, and the upper end of the movable clamping seat 5 is provided with a C-shaped lifting clamping plate 6, the upper end of the C-shaped lifting clamping plate 6 is in contact with the lower end of the volute 8, and the upper end of the clamping control box 3 is provided with a suitable The movable groove 4 should be adapted to the movable groove 4, and a control screw rod 7 is horizontally provided in the movable groove 4. A control screw groove 29 is opened through the lower end center of the clamping movable seat 5. The clamping movable seat 5 slides horizontally and is inserted into the adaptive movable groove 4 and movably sleeves the control screw rod 7 through the control screw groove 29. The clamping control box 3 is located at one end of the control screw rod 7 and is connected to a servo motor. The position of the clamping movable seat 5 in the adaptive movable groove 4 is adjusted by the servo motor to control the clamping movable seat 5 to be close to different positions directly below the volute 8.

[0035] The adaptable movable groove 4 has a strip-shaped through-groove 17 on one side of the clamping control box 3, and the clamping movable seat 5 is located on one side of the strip-shaped through-groove 17 and is respectively connected with a first control joint 18 and a second control joint 19. The first control joint 18 and the second control joint 19 are respectively movable through the strip-shaped through-groove 17. The clamping movable seat 5 has a lifting access groove 20 on one side of the first control joint 18, and a lifting cylinder groove 21 is vertically opened on both sides of the upper end of the lifting access groove 20. The C-shaped lifting splint 6 Two lifting columns 22 are vertically symmetrically provided at the lower end, and the lower ends of the two lifting columns 22 are respectively movably penetrated through the upper and lower clamping movable seat 5 through sealing rings and inserted into the lifting cylinder groove 21, and the lower end of the lifting column 22 placed in the lifting cylinder groove 21 is provided with a lifting piston 31, and the first control joint 18 and the second control joint 19 extend out of the strip-shaped groove 17 and can be normally connected to the hose connected to the hydraulic system. Hydraulic control or pneumatic control can be freely selected according to the weight of the volute 8 and the seat ring 9 to ensure that the volute 8 can be tilted and can be in a horizontal posture.

[0036] A limiting ring is provided at the upper end of the lifting cylinder groove 21, and a push-back access groove 23 is provided on the inner circumference of the limiting ring. Both push-back access grooves 23 are connected to the second control joint 19, and the inner diameter of the limiting ring is smaller than the diameter of the lifting piston 31. When the hydraulic oil enters the lifting access groove 20 from the first control joint 18, as the pressure rises, the lifting piston 31 can push the C-shaped lifting splint 6 to lift vertically. The upper end of the C-shaped lifting splint 6 contacts the lower end of the volute 8, pushing the volute 8 so that the side with the smaller diameter of the volute 8 is pressed by the C-shaped lifting splint 6. After lifting, the virtual center axis of the volute 8 is in a vertical posture. At the same time, the virtual axis of the volute 8 is coaxial with the rotating pallet 2 through the movement of the four clamping movable seats 5. The number of clamping control boxes 3 can be customized according to needs, and should not be less than three. When the C-type lifting splint 6 descends, the second control joint 19 delivers hydraulic oil, and the hydraulic oil enters the two push-back access grooves 23 through the second control joint 19, and pushes the lifting column 22 and the C-type lifting splint 6 downward from above the jacking piston 31, thereby realizing the descent and return of the C-type lifting splint 6.

[0037] A lifting assembly is provided to support the seat ring 9. The lifting assembly is provided at the center of the upper end of the rotating tray 2. The lifting assembly includes a prismatic support column 15, a supporting table 10, four fixed support rods 11 and four extended support rods 12. The upper ends of the four extended support rods 12 are in contact with the lower ends of the seat ring 9 respectively. A rotating control seat 13 is provided at the center of the rotating tray 2. The lower end of the rotating control seat 13 is rotatably plugged into the upper end of the main control base 1. A lifting control slot is provided in the rotating control seat 13. A lifting control cylinder 14 is vertically provided in the lifting control slot. The prismatic support column 15 is vertically provided on the upper end of the lifting control cylinder 14. The center of the end, and the upper end of the prismatic support column 15 is vertically movable through the rotating control seat 13. After the position of the volute 8 is adjusted, the seat ring 9 is placed from the center of the volute 8 above the four extended support rods 12 by the lifting equipment, and then the prismatic support column 15 is vertically pushed up by the lifting control cylinder 14 to make the upper and lower end faces of the seat ring 9 flush with the inner circumference of the volute 8 and docked, and then the welding robot is used to perform contour welding. During this period, the rotating tray 2 can be rotated. When the rotating tray 2 rotates, the rotating control seat 1 clamping control box 3 can be driven to rotate by the motor through the gear or chain.

[0038] The supporting table 10 is horizontally arranged at the upper end of the prismatic supporting column 15, and four fixed support rods 11 are horizontally symmetrically arranged on the outer peripheral side of the supporting table 10. An extension support rod 12 is movably sleeved on one side of the four fixed support rods 11. The side of the extension support rod 12 away from the supporting table 10 is rotatably plugged with an adjustment screw 16 through a threaded plate. One end of the adjustment screw 16 is threadedly plugged into the center of the fixed support rod 11. An adaptation groove 32 is provided at the upper end of the side of the clamping control box 3 close to the supporting table 10. The width of the adaptation groove 32 is greater than the width of the extension support rod 12, and the extension support rod 12 is arranged corresponding to the adaptation groove 32. The extension support rod 12 can be telescopically slid on the fixed support rod 11 to cope with seat rings 9 of different diameters. In addition, the fixed support rod 11 and the extension support rod 12 are made of high-strength steel and can be used for stable support of the seat ring 9.

[0039] Embodiment 2: On the basis of embodiment 1, a cooperating lubrication component is provided to perform status maintenance on the long-term movable use of the clamping movable seat 5. The cooperating lubrication component is provided at the upper end of the clamping movable seat 5 near the C-shaped lifting clamp 6. The cooperating lubrication component includes an oil storage chamber 24 and a synchronous piston rod 25. An oil storage chamber 24 is provided in the clamping movable seat 5 between the two lifting cylinder grooves 21. The upper end of the oil storage chamber 24 passes through the clamping movable seat 5 to provide a piston groove. A partition plate is provided horizontally in the center of the piston groove. The synchronous piston rod 25 is vertically movable and plugged into the center of the partition plate. The synchronous piston rod 25 passes through the partition plate. A pressing piston 26 and a compression piston 27 are respectively provided at the upper and lower ends. The upper end of the pressing piston 26 extends out of the piston groove. The synchronous piston rod 25 is located between the pressing piston 26 and the partition plate. A return spring 28 is provided in the sleeve. When the C-type lifting splint 6 drops to the maximum extent, the lower end of the C-type lifting splint 6 contacts the upper end of the pressing piston 26. The lower end of the oil storage chamber 24 is connected to the upper end of the control screw groove 29, and a valve groove is provided. A one-way valve 30 is inserted in the valve groove. Under normal use, the C-type lifting splint 6 and the pressing piston 26 are in a separated state. When lubrication of the control screw groove 29 and the control screw rod 7 is required, the C-type lifting splint 6 continues to move downward, and the C-type lifting splint 6 pushes the pressing piston 26 and the compression piston 27 to drop. At this time, the air pressure in the oil storage chamber 24 changes, and a small amount of lubricating oil in the oil storage chamber 24 is pushed into the control screw groove 29 to lubricate the clamping movable seat 5 and the control screw rod 7, thereby keeping the clamping movable seat 5 stable in use.

[0040] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A clamping assembly for conformal welding of a turbine seat ring and a volute, characterized in that: include: A main control base (1), wherein the upper end of the main control base (1) is rotatably provided with a rotating tray (2), the upper end of the rotating tray (2) is provided with a volute (8) through a clamping assembly, the clamping assembly includes four clamping control boxes (3), each of the clamping control boxes (3) is movably provided with a clamping movable seat (5), the upper end of the clamping movable seat (5) is provided with a C-shaped lifting clamp (6) for lifting, and the upper end of the C-shaped lifting clamp (6) is in contact with the lower end of the volute (8); A lifting assembly, the lifting assembly being arranged at the center of the upper end of the rotating tray (2), the lifting assembly comprising a prismatic support column (15), a supporting truncated table (10), four fixed support rods (11) and four extended support rods (12), the upper ends of the four extended support rods (12) respectively contacting the lower end of the seat ring (9); A mating lubrication assembly, the mating lubrication assembly being arranged at the upper end of the clamping movable seat (5) close to the C-shaped lifting clamp (6), and comprising an oil storage chamber (24) and a synchronous piston rod (25); The clamping movable seat (5) is provided with an oil storage chamber (24), the upper end of the oil storage chamber (24) passes through the clamping movable seat (5) and is provided with a piston groove, the center of the piston groove is provided with a partition plate horizontally, the synchronous piston rod (25) is vertically movable and plugged into the center of the partition plate, the synchronous piston rod (25) passes through the upper and lower ends of the partition plate and is provided with a pressing piston (26) and a compression piston (27) respectively, the upper end of the pressing piston (26) extends out of the piston groove, the synchronous piston rod (25) is located between the pressing piston (26) and the partition plate and is sleeved with a return spring (28), when the C-type lifting clamp (6) is lowered to the maximum extent, the lower end of the C-type lifting clamp (6) contacts the upper end of the pressing piston (26); A control screw groove (29) is provided through the center of the lower end of the clamping movable seat (5), and a valve groove is provided at the upper end of the oil storage cavity (24) connected to the control screw groove (29), and a one-way valve (30) is inserted in the valve groove.

2. A clamping assembly for conformal welding of a turbine seat ring and a volute according to claim 1, characterized in that: The upper end of the clamping control box (3) is provided with an adaptable movable groove (4), and a control screw (7) is horizontally provided in the adaptable movable groove (4). The clamping movable seat (5) is horizontally slidably inserted into the adaptable movable groove (4) and movably sleeved with the control screw (7) through the control screw groove (29).

3. The clamping assembly for conformal welding of a turbine seat ring and a volute according to claim 2, characterized in that: One side of the adaptive movable groove (4) is provided with a strip-shaped through-groove (17) penetrating the clamping control box (3), and the clamping movable seat (5) is located on one side of the strip-shaped through-groove (17) and is respectively connected with a first control joint (18) and a second control joint (19), and the first control joint (18) and the second control joint (19) are respectively movably provided to penetrate the strip-shaped through-groove (17).

4. A clamping assembly for conformal welding of a turbine seat ring and a volute according to claim 3, characterized in that: A lifting access groove (20) is horizontally provided on one side of the first control joint (18) in the clamping movable seat (5), and lifting cylinder grooves (21) are vertically provided on both sides of the upper end of the lifting access groove (20). Two lifting columns (22) are vertically and symmetrically provided at the lower end of the C-shaped lifting clamp (6). The lower ends of the two lifting columns (22) are respectively movably passed through the upper and lower parts of the clamping movable seat (5) through sealing rings and inserted into the lifting cylinder groove (21), and a lifting piston (31) is provided at the lower end of the lifting column (22) placed in the lifting cylinder groove (21).

5. The clamping assembly for conformal welding of a turbine seat ring and a volute according to claim 4, characterized in that: A limiting ring is provided at the upper end of the lifting cylinder groove (21), and a push-back access groove (23) is provided on the inner circumference of the limiting ring. Both push-back access grooves (23) are connected to the second control joint (19), and the inner diameter of the limiting ring is smaller than the diameter of the lifting piston (31).

6. The clamping assembly for conformal welding of a turbine seat ring and a volute according to claim 5, characterized in that: A rotation control seat (13) is provided at the center of the rotating tray (2), the lower end of the rotation control seat (13) is rotatably connected to the upper end of the main control base (1), a lifting control slot is provided in the rotation control seat (13), a lifting control cylinder (14) is vertically provided in the lifting control slot, a prismatic support column (15) is vertically provided at the center of the upper end of the lifting control cylinder (14), and the upper end of the prismatic support column (15) is vertically movable and passes through the rotation control seat (13).

7. The clamping assembly for conformal welding of a turbine seat ring and a volute according to claim 6, characterized in that: The support truncated platform (10) is horizontally arranged at the upper end of the prismatic support column (15), and four fixed support rods (11) are horizontally symmetrically arranged on the outer peripheral side of the support truncated platform (10). One side of the four fixed support rods (11) is movably sleeved with an extension support rod (12), and the side of the extension support rod (12) away from the support truncated platform (10) is rotatably plugged with an adjustment screw (16) through a threaded plate, and one end of the adjustment screw (16) is screwed into the center of the fixed support rod (11) through a thread.

8. The clamping assembly for conformal welding of a turbine seat ring and a volute according to claim 7, characterized in that: The clamping control box (3) is provided with an adapting groove (32) at the upper end of one side close to the supporting truncated table (10), the width of the adapting groove (32) is greater than the width of the extended support rod (12), and the extended support rod (12) and the adapting groove (32) are arranged correspondingly.

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