Device for grinding and shaping cavitation welding seam of guide vane journal step

Abstract

The device for grinding and shaping the cavitation welding seam of the guide vane journal step comprises a track structure installed on a guide vane journal, a walking grinding structure matched with the track structure is arranged on the track structure, the track structure comprises a circular track, limiting rings are arranged on the outer wall and the inner wall of the circular track, a toothed belt structure is arranged on the outer wall of the circular track, and the toothed belt structure is arranged on the inner wall of the circular track. A plurality of groups of fixing pieces matched with guide vane shaft necks are arranged on the circular track; the walking polishing structure comprises a walking frame, a supporting piece matched with the track structure is arranged on the walking frame, a plurality of sets of limiting clamping wheels matched with the limiting rings are arranged on the walking frame, a motor and an adjustable polishing structure are arranged on the walking frame, and a walking gear meshed with the rack structure is arranged at the output end of the motor. By the adoption of the structure, the polishing force position is kept uniform, and the defect that the roundness and half jin cannot be accurately kept during manual polishing is overcome; the machining efficiency is greatly improved, and the anti-corrosion welding polishing and comparison process is avoided; the device is ingenious in overall structure, convenient to use and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of maintenance of hydroelectric power generation equipment, in particular to a device for grinding and repairing the cavitation weld of a guide vane journal step. Background Art

[0002] During the A-repair of the hydropower station unit, the cavitation or severe scratches on the guide vane shaft neck step need to be polished and welded. After welding, the weld needs to be polished and reshaped to restore the original shape and position tolerance of the step, so as to ensure the smooth assembly of the guide vane after the repair. The current method is to use manual polishing and line template comparison, that is, to make a template of the original radius size of the step, compare the template with the guide vane step, and then polish it manually. This method has the following problems: 1. The roundness and radius cannot be guaranteed; 2. The efficiency is low, and the welding, polishing, and comparison processes need to be repeated. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a device for grinding and shaping the cavitation weld of the guide vane journal step, so as to keep the grinding force and position uniform and avoid the disadvantage that the roundness and half-pound cannot be accurately maintained in manual grinding; the processing efficiency is greatly improved and the process of anti-corrosion welding grinding and comparison is avoided; the overall structure of the device is smart, easy to use and highly practical.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a device for grinding and repairing the cavitation weld of the guide vane journal step, comprising a track structure installed on the guide vane journal, the track structure is provided with a walking grinding structure matched with it, the track structure comprises a ring track, the outer wall and the inner wall of the ring track are provided with a limit ring, the outer wall of the ring track is provided with a rack structure, and the ring track is provided with a plurality of groups of fixing parts matched with the guide vane journal;

[0005] The walking and grinding structure includes a walking frame, on which is provided a support member cooperating with a track structure, on which is provided a plurality of sets of limit clamping wheels cooperating with limit rings, on which is provided a motor and an adjustable grinding structure, and on which is provided a walking gear meshing with a rack structure at the output end of the motor.

[0006] In a preferred solution, the fixing member comprises a positioning sleeve arranged on one side of the ring rail, a tightening screw is arranged on the positioning sleeve, and a tightening block is arranged at the contact end of the tightening screw and the guide vane shaft neck.

[0007] In a preferred solution, the tightening block is a V-shaped block.

[0008] In a preferred solution, the adjustable grinding structure includes a limiting sliding sleeve, which cooperates with a limiting sliding seat arranged on the walking frame, and a positioning bolt and a grinder are arranged on the limiting sliding sleeve.

[0009] The utility model provides a device for grinding and shaping the cavitation weld of the guide vane journal step, which has the following beneficial effects by adopting the above structure:

[0010] (1) Keep the grinding force and position uniform to avoid the disadvantages of manual grinding that the roundness and half a pound cannot be accurately maintained;

[0011] (2) Greatly improves processing efficiency and avoids the process of anti-corrosion welding, grinding and comparison;

[0012] (3) The overall structure of the device is smart, easy to use and highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model in the assembled and used state.

[0015] Figure 2 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 3 It is a schematic diagram of the track structure of the utility model.

[0017] Figure 4 It is a schematic diagram of the walking grinding structure of the utility model.

[0018] Figure 5 It is a schematic diagram of the walking grinding structure of the utility model.

[0019] In the figure: track structure 1, walking and grinding structure 2, ring rail 3, rack structure 4, limit ring 5, positioning sleeve 6, tightening screw 7, tightening block 8, walking frame 9, support 10, limit clamping wheel 11, motor 12, walking gear 13, limit slide 14, limit slide sleeve 15, positioning bolt 16, grinder 17. DETAILED DESCRIPTION

[0020] like Figures 1-5 A device for grinding and shaping the cavitation weld of a guide vane journal step includes a track structure 1 installed on the guide vane journal, the track structure 1 is provided with a walking grinding structure 2 matched therewith, the track structure 1 includes a ring track 3, a limit ring 5 is provided on the outer wall and the inner wall of the ring track 3, a rack structure 4 is provided on the outer wall of the ring track 3, and a plurality of fixing parts matched with the guide vane journal are provided on the ring track 3;

[0021] The walking and grinding structure 2 includes a walking frame 9, on which is provided a support member 10 that cooperates with the track structure 1, on which is provided a plurality of sets of limiting clamping wheels 11 that cooperate with the limiting ring 5, on which is provided a motor 12 and an adjustable grinding structure, and on which is provided an output end of the motor 12 a walking gear 13 that meshes with the rack structure 4.

[0022] In the preferred solution, the fixing member includes a positioning sleeve 6 arranged on one side of the ring rail 3, a tightening screw 7 is arranged on the positioning sleeve 6, and a tightening block 8 is arranged at the contact end of the tightening screw 7 and the guide vane journal. Multi-point positioning and fixing, flexible adjustment, keep the grinding position uniform and stable.

[0023] In the preferred solution, the clamping block 8 is a V-shaped block, which provides a secure clamping effect.

[0024] In a preferred embodiment, the adjustable grinding structure includes a limiting sleeve 15, which cooperates with a limiting slide seat 14 arranged on the traveling frame 9, and a positioning bolt 16 and a grinder 17 are arranged on the limiting sleeve 15. The grinding position can be adjusted conveniently, and the operation is convenient.

[0025] The method of using the utility model is as follows: before use, the track structure 1 is installed accordingly, the position of the track structure 1 is kept accurate by tightening the position of the screw 7, and then the position of the grinder 17 is adjusted to determine the grinding position and then fixed by the positioning bolt 16, and then it starts to be used, and the motor 12 outputs, and the travel gear 13 rotates to drive the travel and grinding structure 2 as a whole to travel and grind around the track structure 1.

[0026] The beneficial effects of the utility model: maintaining uniform grinding force and position, avoiding the disadvantage of manual grinding that the roundness and half a pound cannot be accurately maintained; greatly improving the processing efficiency, avoiding the process of anti-corrosion welding grinding and comparison; the overall structure of the device is smart, easy to use and highly practical.

Claims

1. A device for grinding and shaping a guide vane journal step cavitation weld, comprising a track structure (1) mounted on the guide vane journal, characterized in that: The track structure (1) is provided with a walking and grinding structure (2) cooperating therewith, the track structure (1) comprises a ring track (3), the outer wall and the inner wall of the ring track (3) are provided with limit rings (5), the outer wall of the ring track (3) is provided with a rack structure (4), and the ring track (3) is provided with a plurality of groups of fixing parts cooperating with the guide vane shaft neck; The walking and grinding structure (2) comprises a walking frame (9), the walking frame (9) is provided with a support member (10) which cooperates with the track structure (1), the walking frame (9) is provided with a plurality of groups of limit clamping wheels (11) which cooperate with the limit ring (5), the walking frame (9) is provided with a motor (12) and an adjustable grinding structure, and the output end of the motor (12) is provided with a walking gear (13) which meshes with the rack structure (4).

2. The device for grinding and shaping the guide vane journal step cavitation weld according to claim 1, characterized in that: The fixing member comprises a positioning sleeve (6) arranged on one side of the ring rail (3), a tightening screw (7) being provided on the positioning sleeve (6), and a tightening block (8) being provided at the contact end between the tightening screw (7) and the guide vane shaft neck.

3. The device for grinding and shaping the cavitation weld of the guide vane journal step according to claim 2, characterized in that: The tightening block (8) is a V-shaped block.

4. The device for grinding and shaping the guide vane journal step cavitation weld according to claim 1, characterized in that: The adjustable grinding structure comprises a limiting sliding sleeve (15), the limiting sliding sleeve (15) cooperates with a limiting sliding seat (14) arranged on the walking frame (9), and a positioning bolt (16) and a grinding machine (17) are arranged on the limiting sliding sleeve (15).

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