Welding device for runner maintenance

Abstract

A detection column is fixed to a screw, a connecting rod is rotatably connected to the center of a base, a sleeve head is arranged on the connecting rod, a stabilizing column is fixedly connected to the sleeve head, driven teeth are further fixed to the connecting rod, the driven teeth are meshed with a driving gear, the screw is rotatably installed in the stabilizing column, and a threaded sleeve is in threaded meshing with the screw. Side arms are fixed to the two sides of the threaded sleeve, an adsorption block is fixed to one end of each side arm, and the angle of a projection line can be changed under rotation of the threaded rod, so that the multi-angle welding purpose is achieved, the blade welding device can adapt to welding of blades of different numbers, and the use efficiency is improved; a projection line emitted by the expansion gradienter is projected on the surface of the base, under the recognition of the scale marks, a worker can conveniently and accurately control the rotation angle by rotating the screw rod to weld the positions of different blades, and errors in the welding process are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of runner welding, and particularly relates to a welding device for runner maintenance. Background Art

[0002] The runner is the prime mover component for a hydrogenerator to generate electric energy. A hydropower station must have certain hydraulic structures. For example, a dam needs to be built to form a certain water level difference between the upstream and downstream, that is, the head required by the water turbine. The water flow enters the water turbine through the flow channel with a certain flow rate, that is, how many cubic meters per second.

[0003] The Chinese patent with the authorization announcement number CN205733571U discloses a positioning device, especially a welding positioning device for a Francis runner blade. It includes a runner blade and also includes a bottom plate. A runner crown is arranged in the bottom plate. The runner crown is fixed to the bottom plate through a support column. Adjustable lower ring supports are respectively arranged at both ends of the upper part of the bottom plate. A runner lower ring is arranged on the upper part of the adjustable lower ring support. The bottom end of the runner blade is fixed to the runner crown, and the upper end of the runner blade is in movable contact with the runner lower ring. The welding positioning device for the Francis runner blade has a compact structure, is easy to operate, and has high performance.

[0004] The above patent only makes the structure compact and improves the operation through the positioning device. When welding the blades on the runner, the installation and welding angles of the blades on different runners are inconsistent, lacking the positioning function for welding, and the angle and height of the runner cannot be conveniently converted during the welding process, reducing the flexibility of the overall equipment. Summary of the Utility Model

[0005] In order to overcome the deficiencies of the prior art, the technical problem to be solved by the utility model is the adjustment of the angle and height of the runner and the positioning problem for welding multiple blades at different angular positions.

[0006] In order to achieve the above object, the utility model provides the following technical solution: A welding device for runner maintenance, a motor is installed on the surface of the base. The motor is connected with a driving gear through a gearbox. It includes a stabilizing column and a screw rod. A detection column is fixed on the screw rod. The center of the base is rotatably connected with a connecting rod. A sleeve is arranged on the connecting rod. The stabilizing column is fixedly connected to the sleeve. A driven gear is also fixed on the connecting rod. The driven gear meshes with the driving gear. The screw rod is rotatably installed in the stabilizing column;

[0007] A threaded sleeve is threadedly engaged with the screw rod. Side arms are fixed on both sides of the threaded sleeve. An adsorption block is fixed at one end of the side arm; The adsorption block can adsorb under the runner disc to stabilize the runner disc and prevent upward displacement.

[0008] On both sides of the detection column, reset grooves are provided, and a laser level is hinged in the reset grooves. The projection lines emitted by the laser level are projected onto the runner disc. The two endpoints of the blade to be welded are aligned on the projection lines for welding operations. The blade is fixedly welded to the runner disc through manual welding or the use of a welding machine. In this way, it can play a positioning role during the welding process, facilitating the staff to align and weld, and reducing the problem of welding position deviation.

[0009] Further, notches are provided on both sides of the stabilizing column, the side arms are fitted in the notches, and convex blocks are fixed on the outer wall of the stabilizing column.

[0010] Further, a magnetic block is fixed on one side of the reset groove. When the laser level is folded in the reset groove, it will be adsorbed by the magnetic block, improving the stability of the laser level in the reset groove.

[0011] Further, an opening is provided below the reset groove. The opening can facilitate the force to unfold the laser level.

[0012] Further, the base is circular, scale lines are provided on the surface of the base, and an extended level is detachably connected to one side of the laser level. With the recognition of the scale lines, it is beneficial for the staff to precisely control the rotation angle by rotating the screw to weld the positions of different blades, reducing the error during the welding process.

[0013] In summary, compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] (1) Under the meshing of the driven gear and the driving gear, the rotation angle of the stabilizing column is driven, and thus the angle of the runner disc can be adjusted to adjust the welding position, eliminating the need for manual movement to weld at different positions.

[0015] (2) With the cooperation of the notches and the side arms, when the screw rotates, the threaded sleeve will not rotate synchronously with the screw, causing the threaded sleeve to undergo vertical displacement changes. The side arms can support under the runner disc. After the position height of the side arms changes, it can be used to adjust the placement height of the runner disc. The adsorption block can adsorb under the runner disc to stabilize the runner disc and prevent upward displacement.

[0016] (3) When the screw rotates, the angle of the projection line will change, thus solving the problem of welding at multiple angles, being able to adapt to welding different numbers of blades, improving the use efficiency. The projection lines emitted by the laser level are projected onto the runner disc, and the projection lines emitted by the extended level are projected onto the surface of the base. With the recognition of the scale lines, it is beneficial for the staff to precisely control the rotation angle by rotating the screw to weld the positions of different blades, reducing the error during the welding process. Description of the Drawings

[0017] Figure 1 This is the overall structural schematic diagram of the present utility model;

[0018] Figure 2 This is the overall sectional structural schematic diagram of the present utility model;

[0019] Figure 3 This is the overall bottom structural schematic diagram of the present utility model;

[0020] Figure 4 This is the partial disassembly structural schematic diagram of the present utility model;

[0021] Figure 5 This is the partial disassembly structural schematic diagram of the present utility model;

[0022] Figure 6 This is the structural schematic diagram of the projection rays of the present utility model.

[0023] Explanation of reference numerals: 10, base; 11, motor; 12, driving gear; 13, connecting rod; 14, driven gear; 15, socket; 16, stabilizing column; 17, notch; 18, convex block; 19, screw; 20, threaded sleeve; 21, side arm; 22, adsorption block; 23, detection column; 24, reset groove; 25, opening; 26, magnetic block; 27, laser level; 29, extended level; 30, runner disc; 31, blade; 32, keyway; 33, scale line; 34, projection ray. Detailed implementation manners

[0024] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

[0025] Embodiment 1:

[0026] Refer to Figures 1 - 5 , a welding device for runner repair, including a stabilizing column 16 and a screw 19. A detection column 23 is fixed on the screw 19. The center of the base 10 is rotatably connected with a connecting rod 13. A socket 15 is provided on the connecting rod 13. A stabilizing column 16 is fixedly connected to the socket 15. A convex block 18 is fixed on the outer wall of the stabilizing column 16;

[0027] The detection column 23 is used to install the runner disc 30. A plurality of blades 31 are welded on the surface of the runner disc 30. A keyway 32 is provided on the runner disc 30. The runner disc 30 is sleeved and installed from above the detection column 23. With the cooperation of the keyway 32 and the convex block 18, the runner disc 30 can be quickly positioned, which is convenient for the staff to carry out welding operations. By manually rotating the stabilizing column 16 to change the angle, the angle of the runner disc 30 can be adjusted, thereby adjusting the welding position, and there is no need for manual movement to weld at different positions;

[0028] Reset grooves 24 are formed on both sides of the detection column 23. A laser level 27 is hingedly connected inside the reset groove 24. It should be noted that when the runner disc 30 is sleeved, the laser level 27 needs to be folded inside the reset groove 24. After the runner disc 30 is placed neatly, the laser level 27 is unfolded. The maximum unfolding angle of the laser level 27 is 90°. The laser level 27 (the working principle of the laser level is to utilize the linear propagation and reflection characteristics of laser. By emitting a laser beam and projecting it onto the object to be measured, the levelness of the object is determined. The core part of the laser level is the laser emission and reception system. The laser emission system generally consists of a laser diode, an emission lens, and a deflection device. The laser reception system includes a reception lens and a reception device, which are mainly used to detect the position and direction of the laser beam), the horizontal line emitted by the laser level 27 will be projected onto the surface of the runner disc 30 as the projection line 34, so as to play a positioning role during the welding process, which is beneficial for the staff to align and weld, and reduces the problem of welding position deviation;

[0029] Reference Figure 3 and Figure 4 , the screw 19 is rotatably installed inside the stable column 16, so that the screw 19 can rotate independently inside the stable column 16. A threaded sleeve 20 is threadedly engaged with the screw 19. Manually rotate the screw 19, and it is convenient to rotate by force through the laser level 27. When rotating the screw 19, the stable column 16 needs to be held to fix it while rotating the screw 19. When the screw 19 rotates, the threaded sleeve 20 will displace. Both sides of the threaded sleeve 20 are fixed with side arms 21. Notches 17 are formed on both sides of the stable column 16. The side arms 21 are fitted inside the notches 17. With the cooperation of the notches 17 and the side arms 21, when the screw 19 rotates, the threaded sleeve 20 will not rotate synchronously with the screw 19, causing the threaded sleeve 20 to displace up and down. The side arms 21 can support under the runner disc 30. After the position height of the side arms 21 changes, it can be used to adjust the placement height of the runner disc 30. One end of the side arm 21 is fixed with an adsorption block 22, and the adsorption block 22 can adsorb under the runner disc 30 to stabilize the runner disc 30 and prevent upward displacement;

[0030] The material of the adsorption block 22 can be made of materials with strong magnetism, such as ferromagnetic materials and ferrimagnetic materials, to further improve the adsorption stability effect. The placement height of the runner disc 30 can be adjusted according to the rotation of the screw 19.

[0031] Embodiment 2:

[0032] The surface of the base 10 is equipped with a motor 11. The motor 11 is a stepper motor that can precisely control the conversion angle. The motor 11 is connected to a driving gear 12 through a gearbox. A driven gear 14 is also fixed on the connecting rod 13. During the welding process, by starting the motor 11, under the meshing of the driven gear 14 and the driving gear 12, the stable column 16 is driven to rotate, changing the way of manually rotating the stable column 16. Thus, the rotation of the stable column 16 is automatically controlled by the motor 11, and there is no need for manual movement to weld at different positions, saving the trouble of manual operation.

[0033] Moreover, the motor 11 has a self-locking function. When it is necessary to manually rotate the screw 19, the screw 19 can be directly rotated, and there is no need to hold and fix the stable column 16 to prevent it from rotating with the screw 19, further improving the use effect of the overall equipment.

[0034] Embodiment Three;

[0035] Reference Figure 3 , one side of the reset groove 24 is fixed with a magnetic block 26. When the laser level 27 is folded in the reset groove 24, it will be adsorbed by the magnetic block 26, improving the stability of the laser level 27 in the reset groove 24. Similarly, the magnetic block 26 is made of the same material as the adsorption block 22 in Embodiment One, and a torsion spring is installed inside the hinge connection of the laser level 27. When the laser level 27 is separated from the magnetic block 26, under the action of the torsion spring, the laser level 27 is unfolded into 90°.

[0036] An opening 25 is provided below the reset groove 24. When the laser level 27 is folded in the reset groove 24, the laser level 27 can be conveniently unfolded by applying force through the opening 25.

[0037] Reference Figure 2 , the base 10 is circular, and scale lines 33 are provided on the surface of the base 10. One side of the laser level 27 is detachably connected with an extended level 29; when the screw 19 rotates, the angle of the projection line 34 will be changed, thus solving the problem of welding at multiple angles and being able to adapt to welding different numbers of blades 31, improving the use efficiency. As shown by the arrow in Figure 2 , the projection line 34 emitted by the extended level 29 is projected on the surface of the base 10. Under the recognition of the scale lines 33, it is beneficial for the staff to precisely control the rotation angle by rotating the screw 19 to weld the positions of different blades 31, reducing the error during the welding process.

[0038] In the above embodiments: When the laser level 27 is unfolded, it is convenient to rotate the screw 19 under force. After the laser level 27 is completely folded, it fits in the reset groove 24 and does not affect the installation of the rotating wheel disc 30. Moreover, the laser level 27 and the extended level 29 are set in a charging manner. The drive of the motor 11 is electrically connected to the controller and is directly controlled by remote control or computer.

[0039] Working principle: The rotating wheel disc 30 is sleeved and installed from above the detection column 23. With the cooperation of the key groove 32 and the convex block 18, the rotating wheel disc 30 can be quickly positioned. When the rotating wheel disc 30 is sleeved, the laser level 27 is folded in the reset groove 24. After the rotating wheel disc 30 is placed neatly, the laser level 27 is unfolded. During the welding process, by starting the motor 11, the driven gear 14 and the driving gear 12 mesh with each other, driving the stable column 16 to rotate an angle, and then the angle of the rotating wheel disc 30 can be adjusted to adjust the welding position, eliminating the need for manual movement for welding at different positions.

[0040] When adjusting the height of the rotating wheel disc 30, rotate the screw 19. With the cooperation of the notch 17 and the side arm 21, when the screw 19 rotates, the threaded sleeve 20 will not rotate synchronously with the screw 19, causing the threaded sleeve 20 to move up and down. The side arm 21 can support under the rotating wheel disc 30. After the position height of the side arm 21 changes, it can be used to adjust the placement height of the rotating wheel disc 30.

[0041] During welding, start the laser level 27 and the extended level 29. The projection line 34 emitted by the laser level 27 is projected onto the rotating wheel disc 30. Align the two endpoints of the blade 31 to be welded on the projection line 34 for welding operations. The blade 31 is fixedly welded to the rotating wheel disc 30 by manual welding or using a welding machine. The projection line 34 emitted by the extended level 29 is projected onto the surface of the base 10, that is, on the surface of the scale line 33. With the recognition of the scale line 33, it is beneficial for the staff to accurately control the rotation angle by rotating the screw 19 to weld the positions of different blades 31, reducing the error during the welding process; when the screw 19 rotates, the angle of the projection line 34 will change, thus solving the problem of welding at multiple angles and being able to adapt to welding different numbers of blades 31. Only need to calculate the welding angle according to the number of blades, and then adjust the degree of the line mapped by the extended level 29 on the surface of the scale line 33.

[0042] As used in the specification and claims, certain terms are used to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different names to refer to the same component. The specification and claims do not use the difference in names as a way to distinguish components, but rather use the difference in the functions of components as the criterion for distinction. As used throughout the specification and claims, the term "comprising" is an open-ended term and should be interpreted as "comprising but not limited to". "Substantially" means within an acceptable error range, and those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0043] It should be noted that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a commodity or system including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such commodity or system. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the commodity or system including the said element.

[0044] The above description shows and describes several preferred embodiments of the present application. However, as mentioned above, it should be understood that the present application is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the application concept described herein through the above teachings or the technology or knowledge in the relevant field. And any changes and variations made by those skilled in the art without departing from the spirit and scope of the present application shall fall within the protection scope of the appended claims of the present application.

Claims

1. A welding device for wheel maintenance, wherein a motor (11) is mounted on the surface of a base (10), and the motor (11) is connected to a driving gear (12) via a gearbox, wherein: It comprises a stabilizing column (16) and a screw rod (19), a detection column (23) being fixed on the screw rod (19), a connecting rod (13) being rotatably connected to the center of the base (10), a sleeve (15) being provided on the connecting rod (13), the sleeve (15) being fixedly connected to the stabilizing column (16), a driven tooth (14) being fixed on the connecting rod (13), the driven tooth (14) being meshed with the driving gear (12), and the screw rod (19) being rotatably installed in the stabilizing column (16); The screw rod (19) is threadedly engaged with a threaded sleeve (20), side arms (21) are fixed on both sides of the threaded sleeve (20), and an adsorption block (22) is fixed at one end of the side arm (21); Reset grooves (24) are provided on both sides of the detection column (23), and a laser level (27) is hingedly connected inside the reset groove (24).

2. A welding device for wheel maintenance according to claim 1, characterized in that: Notches (17) are provided on both sides of the stabilizing column (16), the side arms (21) fit into the notches (17), and a protrusion (18) is fixed to the outer wall of the stabilizing column (16).

3. A welding device for wheel maintenance according to claim 1, characterized in that: A magnetic block (26) is fixed on one side of the reset groove (24).

4. A welding device for wheel maintenance according to claim 2, characterized in that: An opening (25) is provided below the reset groove (24).

5. A welding device for wheel maintenance according to claim 1, characterized in that: The base (10) is circular, and a scale line (33) is provided on the surface of the base (10). An extended level (29) is detachably connected to one side of the laser level (27).

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