A pumped storage power station hydro-generator rotor arm processing device

Abstract

The present application relates to rotor processing equipment technical field, specifically to a kind of pumped storage power station water turbine generator rotor support arm processing device, including drive frame, mounting frame and the flexible polishing belt being set to mounting frame, still including tensioning assembly and drive assembly, the tensioning assembly is set to mounting frame, and the flexible polishing belt is pushed from inner ring when tensioning assembly energization start, the drive assembly is set to mounting frame and is in line with the inner ring of flexible polishing belt.This application is set to mounting frame, tensioning assembly, drive assembly and intermittent water supply mechanism, can make flexible polishing belt and weld linear contact, increase the contact range of flexible polishing belt and polishing position while being able to cool polishing position, ensure continuity polishing while being able to make the debris in the pore of flexible polishing belt outer circle surface passively discharge, polishing quality and polishing efficiency play gain effect.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of rotor processing equipment, in particular to a water turbine generator rotor arm processing device for pumped storage power stations. BACKGROUND

[0002] The water turbine generator rotor arm is a core load-bearing and connecting component of the rotor structure, but problems such as uneven surface and size deviation may occur due to welding deformation, bumping and wear during manufacturing, transportation or long-term operation, so the rotor arm needs to be polished to ensure efficient operation of the water turbine generator.

[0003] Polishing refers to a processing method for reducing the surface roughness of a workpiece by mechanical, chemical or electrochemical action to obtain a bright and smooth surface. In order to ensure the quality of the rotor, the rotor needs to be polished during production. Since the rotor has multiple different surfaces that need to be polished, the polishing process relies heavily on the work experience of the workers, which seriously affects the polishing efficiency and quality. In view of the above problems, the prior art has a good solution, such as a rotor polishing device for medium-frequency brushless synchronous generator production disclosed in CN111702617B, which can drive the outer tooth polishing belt to automatically polish the rotor, thereby improving the rotor polishing efficiency and quality. However, there are still the following defects: the rotor arm and the annular base at both ends of the rotor center body are connected by welding, and the rotor arm and the annular base are arranged vertically, that is, the welding position of the two is at a right angle. When polishing this position, the polishing belt cannot fully contact the polishing position due to the restriction of the right angle, which also affects the polishing quality and efficiency.

[0004] Therefore, in order to solve the above problems, a water turbine generator rotor arm processing device for pumped storage power stations is proposed. SUMMARY

[0005] The application aims to provide a water turbine generator rotor arm processing device for pumped storage power stations, which solves the problem of insufficient contact between the polishing belt and the polishing position, thereby affecting the polishing quality and efficiency. The installation frame, tensioning assembly, driving assembly and intermittent water feeding mechanism can make the flexible polishing belt linearly contact the weld, increase the contact range of the flexible polishing belt and the polishing position, and adjust the bending radius when the flexible polishing belt rotates, so that the pores on the outer surface of the flexible polishing belt are pulled to different degrees when the bending radius changes. The intermittent water feeding mechanism feeds water from the inner ring of the flexible polishing belt, which can effectively ensure the polishing quality and efficiency.

[0006] To achieve the above object, the present application provides the following technical solutions:

[0007] A kind of pumped storage power station water turbine generator rotor support arm processing device, including drive frame, mounting frame and the flexible polishing belt being set to mounting frame, it further includes tensioning assembly and drive component, tensioning assembly is set to mounting frame, when tensioning assembly energization starts, flexible polishing belt is pushed from inner circle, drive component is set to mounting frame and is in contact with the inner circle of flexible polishing belt, when drive component energization starts, it drives flexible polishing belt to rotate around mounting frame, tensioning assembly includes tensioning roller and intermittent water supply mechanism, tensioning roller is in contact with the inner circle of flexible polishing belt, intermittent water supply mechanism is set to tensioning roller, when flexible polishing belt rotates, it drives tensioning roller to rotate, tensioning roller rotates intermittent water supply mechanism and intermittently supplies water to flexible polishing belt.

[0008] Preferably, drive component includes drive roller and motor, mounting frame is arranged in the shape of "V", and the angle of end part is acute angle, two groups of fixed frame are arranged on mounting frame, two drive rollers are arranged on corresponding fixed frame respectively, motor is arranged on corresponding fixed frame and the output end is connected with the rotating shaft of corresponding drive roller, the surface of drive roller is frosted, which can increase the friction between drive roller and flexible polishing belt, so as to smoothly drive flexible polishing belt to rotate when drive roller rotates, so as to realize efficient polishing of polishing position, the arc surface of drive roller is tangent to the plane where the outer wall of mounting frame is located, when the two are tangent, the inner circle of polishing belt can be completely in contact with the surface of mounting frame, which can make polishing belt completely in contact with the surface of rotor support arm when polishing the planar position of rotor support arm, so as to ensure efficient and high-quality polishing treatment of planar position.

[0009] It can be known that, since the welding position between rotor support arm and annular base at both ends of rotor is at right angle, when polishing using conventional polishing device, it is usually necessary for staff to hold flexible polishing belt or polishing wheel to make it in contact with welding position, and due to the influence of right angle, the contact range of flexible polishing belt or polishing wheel with polishing position is limited, which seriously affects polishing efficiency and quality, so this scheme is adopted. By setting mounting frame with acute angle at end part, the end position of mounting frame can be clamped at welding position needing polishing when polishing, at this time, flexible polishing belt around mounting frame can be in linear contact with welding seam, which effectively increases polishing range and ensures effective polishing of welding seam, so as to ensure polishing efficiency and polishing quality.

[0010] Preferably, the tensioning assembly further comprises a mounting plate, an electric push rod, a U-shaped plate and a supporting rod, the mounting plate is arranged on the mounting frame, the electric push rod is arranged on the mounting plate, the U-shaped plate is arranged on the output end of the electric push rod and connected with the driving frame, and the supporting rod is fixedly arranged on the U-shaped plate to ensure the supporting effect of the supporting rod.

[0011] It can be known that mechanical friction is needed when polishing with the flexible polishing belt, and debris will be generated and accompanied by high temperature when rubbing. The conventional treatment method is to add water at the polishing position, which can not only play a cooling effect but also avoid the scattering of debris. However, the generated debris will be attached to the outer surface of the flexible polishing belt, which will also affect the polishing quality, so the scheme is adopted. Through the setting of the tensioning roller and the setting of the diameters of the driving roller and the tensioning roller, on the basis of being able to tension the flexible polishing belt to ensure its normal polishing function, the bending radius of the flexible polishing belt passing through the driving roller and the tensioning roller is adjusted, so that the pore deformation degree of the outer surface of the flexible polishing belt passing through the driving roller and the tensioning roller is different, thereby the debris attached to the outer surface of the flexible polishing belt is passively discharged, and the polishing quality of the flexible polishing belt is improved.

[0012] Preferably, the distance between the tensioning roller and the two driving rollers is , the distance between the two driving rollers is , and .

[0013] By adopting the above scheme, the contact area between the flexible polishing belt and the surface of the tensioning roller can be increased, the bending radius of the flexible polishing belt passing through the tensioning roller is further reduced, the deformation degree of the pore of the outer surface of the flexible polishing belt passing through the driving roller and the tensioning roller is enlarged, the passive discharge of the debris attached to the outer surface of the flexible polishing belt is assisted, and the polishing quality is further improved.

[0014] Preferably, the intermittent water feeding mechanism comprises a water inlet pipe, an L-shaped sleeve, a sleeve pipe and a water outlet pipe, one end of the supporting rod is provided with a slot, a side wall of the slot is provided with a water outlet, the sleeve pipe is arranged on the supporting rod and covers the water outlet, one end of the L-shaped sleeve penetrates through the sleeve pipe and extends into the slot through the water outlet, one end of the water outlet pipe is arranged on the L-shaped sleeve and communicates with the inside of the L-shaped sleeve, and the other end of the water outlet pipe penetrates to the outside of the tensioning roller and the end portion is tangent to the arc surface of the tensioning roller.

[0015] By adopting the above scheme, water can be added from the inner circle of the flexible polishing belt, and the water can be transported from the inner circle to the outer circle of the flexible polishing belt by the centrifugal force generated when the flexible polishing belt rotates and the permeability of water, and the debris removal effect in the pores of the outer circle of the flexible polishing belt can be improved by the centrifugal force and the tensile effect of water when the water is transported from the inner circle to the outer circle, thereby ensuring the polishing quality of the flexible polishing belt.

[0016] Preferably, the intermittent water feeding mechanism further comprises a sliding block, a limiting block and a mechanical spring valve, the surface of the supporting rod is provided with a reciprocating thread, the sliding block is sleeved with the supporting rod in cooperation with the reciprocating thread, the inner wall of the tensioning roller is provided with a limiting groove, the limiting block is arranged on the sliding block and is slidingly arranged in the limiting groove, and the mechanical spring valve is arranged on the L-shaped sleeve.

[0017] By adopting the above scheme, on the basis of realizing water feeding from the inner circle of the flexible polishing belt to the outer circle thereof, the sliding block can be intermittently pressed against the mechanical spring valve by the rotation of the tensioning roller, so that the flow state of the water flow is intermittently controlled, the water flow is added in a timed and quantitative manner, the phenomenon of slipping at the polishing position caused by excessive water addition at one time is avoided, and the polishing quality is ensured.

[0018] Preferably, the reciprocating thread along the axial length of the supporting rod is equal to the circumference of the cross section of the tensioning roller, the number of turns of the reciprocating thread is two, the mechanical spring valve is located at one end of the reciprocating thread, and the water outlet end of the water outlet pipe is vertically upward when the sliding block contacts the mechanical spring valve.

[0019] By adopting the above scheme, the tensioning roller can be rotated by two turns when the sliding block moves along the axial direction of the supporting rod and finally returns to the original position and contacts the mechanical spring valve, that is, the water outlet pipe is located at the same position each time the sliding block contacts the mechanical spring valve, and as the tensioning roller continues to rotate, the water discharged from the water outlet pipe can be all guided to the inner circle surface of the flexible polishing belt, so that the splashing of the water flow is avoided, and the position of the flexible polishing belt in contact with the tensioning roller can be fully wetted at this time, and since the bending radius of the flexible polishing belt at the tensioning roller is smaller than that at the driving roller, part of the water can be squeezed out and further improve the debris removal effect in the pores of the outer circle surface of the flexible polishing belt, thereby further ensuring the polishing quality.

[0020] Compared with the prior art, the present application has the following advantages:

[0021] 1. By setting the mounting bracket with an acute angle end, the driving roller and the tensioning roller, the outer surface of the flexible polishing belt can be in linear contact with the position of the fillet weld during polishing, effectively increasing the contact range of the flexible polishing belt with the position of the fillet weld, while enabling continuous polishing operation when the flexible polishing belt rotates, and automatically adjusting the bending radius of the flexible polishing belt when passing through the driving roller and the tensioning roller according to the diameter change of the driving roller and the tensioning roller, realizing different degrees of pulling of the pores on the outer surface, so that the debris attached in the pores is passively discharged, effectively ensuring the polishing quality.

[0022] 2. By setting the water inlet pipe and the plurality of water outlet pipes, water can be supplied from the inner circle of the flexible polishing belt to the outer circle when the tensioning roller rotates, and the centrifugal force generated during the rotation of the flexible polishing belt can assist the water flow to penetrate from the inner circle to the outer circle, and the tension of the water flow can assist the debris to be discharged from the pores on the outer surface of the flexible polishing belt when the water flow penetrates, further ensuring the polishing quality.

[0023] 3. By setting the sliding block, the mechanical spring valve and the reciprocating thread on the surface of the supporting rod, the sliding block can be intermittently pressed against the mechanical spring valve along the axial direction of the supporting rod when the tensioning roller rotates, and under the limitation of the length of the reciprocating thread and the circumference of the cross section of the tensioning roller, the water outlet pipe is always in the same position when the sliding block presses the mechanical spring valve each time, which avoids water scattering and skidding and further ensures the polishing effect. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the overall structure diagram of the present application;

[0025] Figure 2 It is the connection structure diagram of the mounting bracket, the flexible polishing belt, the tensioning assembly and the driving assembly of the present application;

[0026] Figure 3 It is the exploded view of the intermittent water supply mechanism of the present application;

[0027] Figure 4 It is the local sectional view of the connection structure between the tensioning roller and the intermittent water supply mechanism of the present application;

[0028] Figure 5 It is the Figure 4 enlarged view of part A of the present application;

[0029] Figure 6 It is the position relationship diagram between the tensioning roller and the two driving rollers of the present application.

[0030] In the figure: 1, drive frame; 2, mounting frame; 21, fixed frame; 3, flexible polishing belt; 4, tensioning assembly; 41, tensioning roller; 411, limiting groove; 42, intermittent water feeding mechanism; 421, water inlet pipe; 422, L-shaped sleeve; 423, sleeve pipe; 424, water outlet pipe; 425, sliding block; 426, limiting block; 427, mechanical spring valve; 43, mounting plate; 44, electric push rod; 45, U-shaped plate; 46, supporting rod; 461, insertion slot; 462, water outlet; 463, reciprocating thread; 5, drive assembly; 51, drive roller; 52, motor. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0032] Please refer to Figures 1 to 6 The present application provides a kind of water turbine generator rotor support arm processing device of pumped storage power station, technical scheme is as follows:

[0033] Specifically, please refer to Figure 1 And Figure 2The utility model provides a kind of pumped storage power station water turbine generator rotor support arm processing device, including drive frame 1, mounting frame 2 and the flexible polishing belt 3 being set to mounting frame 2, the drive frame 1 can be driven by driving equipment, and the driving equipment includes but is not limited to multi-axis industrial robot, entire device can be moved to polishing position by it, and it further includes tensioning assembly 4 and drive assembly 5, the drive assembly 5 is set to mounting frame 2 and is attached with the inner circle of flexible polishing belt 3, the drive assembly 5 includes drive roller 51 and motor 52, the mounting frame 2 is set to "V" shape, and the angle shown at end is acute angle, the mounting frame 2 is provided with two groups of fixed frame 21, the drive roller 51 is provided with two and is respectively set on corresponding fixed frame 21, the motor 52 is set on corresponding fixed frame 21 and the output end is connected with the pivot of corresponding drive roller 51, the surface of drive roller 51 is frosted and is set, can increase the friction between drive roller 51 and flexible polishing belt 3, to facilitate the rotation of flexible polishing belt 3 when drive roller 51 rotates, to realize the efficient polishing of polishing position, while the annular groove can be opened in the surface of drive roller 51, and flexible polishing belt 3 is clamped in the inside of annular groove, avoid the situation that flexible polishing belt 3 appears along the axial movement of drive roller 51 when polishing, guarantee the normal operation of polishing operation, the camber of drive roller 51 is tangent to the plane of the outer wall of mounting frame 2, when the tangent of two, the inner circle of polishing belt can be completely attached with the surface of mounting frame 2, when needing to polish the planar position of rotor support arm, can make polishing belt and rotor support arm surface completely adhere, to guarantee the efficient and high-quality polishing treatment of planar position.

[0034] Under the above setting condition, when polishing, the end of mounting frame 2 is moved to polishing position, motor 52 is started, and the output end of motor 52 drives corresponding drive roller 51 to rotate, and when drive roller 51 rotates, it drives flexible polishing belt 3 to rotate around mounting frame 2 through the friction between itself and flexible polishing belt 3, so as to polish the weld of rotor support arm and annular base at both ends of rotor, guarantee the normal operation of polishing operation, and the contact range of flexible polishing belt 3 and polishing position can be increased when polishing, effectively guarantee the polishing efficiency and polishing quality, and when needing to polish the planar position of rotor support arm, the angle of mounting frame 2 is adjusted, so that flexible polishing belt 3 adheres to the planar position of rotor support arm surface, to guarantee the efficient and high-quality polishing treatment of planar position.

[0035] As one embodiment of the present application, refer to Figure 1 , Figure 2 and Figure 6The tensioning assembly 4 is arranged in the mounting frame 2, and the tensioning assembly 4 comprises a tensioning roller 41 and an intermittent water feeding mechanism 42, and further comprises a control module, and an electric push rod 44 is electrically connected with the control module. The control module is used for receiving a current feedback signal from the motor 52 in the driving assembly 5, and when the current of the motor 52 is lower than a preset lower threshold value (indicating that the flexible polishing belt 3 is slack), the output end of the electric push rod 44 is controlled to extend to increase the tensioning force; when the current of the motor 52 is higher than a preset upper threshold value (indicating that the tensioning force is too large), the output end of the electric push rod 44 is controlled to retract to reduce the tensioning force. Through this closed-loop control, dynamic stability of the tension of the flexible polishing belt 3 is realized. The tensioning roller 41 is in contact with the inner ring of the flexible polishing belt 3, and the tensioning assembly 4 further comprises a mounting plate 43, the electric push rod 44, a U-shaped plate 45 and a support rod 46. The mounting plate 43 is arranged on the mounting frame 2, the electric push rod 44 is arranged on the mounting plate 43, the U-shaped plate 45 is arranged at the output end of the electric push rod 44 and is detachably connected with the driving frame 1 through bolts, so as to facilitate replacement of the flexible polishing belt 3 after long-time use, the support rod 46 is fixedly arranged on the U-shaped plate 45, and the support effect of the support rod 46 is ensured, the tensioning roller 41 is hollow and rotatably arranged on the support rod 46 through a bearing, the tensioning roller 41 is rotatably connected with the support rod 46, so that the tensioning roller 41 can be smoothly rotated while having the tensioning effect, in order to facilitate installation and maintenance of internal components of the tensioning roller 41, the tensioning roller 41 can be designed as two half rollers, and then the two half rollers are connected in a splicing manner to form a complete tensioning roller 41, so as to ensure normal use, the diameter of the tensioning roller 41 is smaller than the diameter of the driving roller 51, the distance between the tensioning roller 41 and the two driving rollers 51 is , the distance between the two driving rollers 51 is , and .

[0036] In the above setting conditions, after the flexible polishing belt 3 is wound on the mounting frame 2 and the driving rollers 51, the U-shaped plate 45 is fixedly connected with the driving frame 1 through bolts, the electric push rod 44 is started, the output end of the electric push rod 44 drives the U-shaped plate 45 to move, since the tensioning roller 41 is connected with the U-shaped plate 45 through the supporting rod 46, the U-shaped plate 45 can drive the tensioning roller 41 to approach the inner ring of the flexible polishing belt 3 in the moving process, until the tensioning roller 41 tensions the flexible polishing belt 3 through the mounting frame 2 and the two driving rollers 51, to avoid the situation that the flexible polishing belt 3 slips in the rotating process of the driving roller 51, with the continuous rotation of the flexible polishing belt 3, the flexible polishing belt 3 will continuously pass through the surfaces of the two driving rollers 51 and the tensioning roller 41, and will automatically adjust the bending radius when passing through the surface of the tensioning roller 41 according to the diameter changes of the driving roller 51 and the tensioning roller 41, so that the pores on the outer ring surface of the flexible polishing belt 3 continuously change, even the debris in the pores attached to the outer ring surface of the flexible polishing belt 3 is passively discharged, to ensure the polishing quality.

[0037] As an embodiment of the present application, with reference to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 , the intermittent water feeding mechanism 42 is arranged on the tensioning roller 41, the intermittent water feeding mechanism 42 comprises a water inlet pipe 421, an L-shaped sleeve 422, a sleeve pipe 423 and a water outlet pipe 424, one end of the supporting rod 46 is provided with an insertion slot 461, a side wall of the insertion slot 461 is provided with a water outlet 462, the sleeve pipe 423 is arranged on the supporting rod 46 and covers the water outlet 462, one end of the L-shaped sleeve 422 penetrates through the sleeve pipe 423 and extends into the insertion slot 461 through the water outlet 462, one end of the water outlet pipe 424 is arranged on the L-shaped sleeve 422 and communicates with the inside of the L-shaped sleeve 422, the other end of the water outlet pipe 424 penetrates to the outside of the tensioning roller 41 and the end portion is tangent to the arc surface of the tensioning roller 41, here the sleeve pipe 423 and the supporting rod 46 can be rotatably sleeved through a sealing bearing, to avoid water leakage between the sliding block 425 and the supporting rod 46 and ensure normal rotation of the sleeve pipe 423 under the connecting action of the water outlet pipe 424 and the tensioning roller 41;

[0038] The intermittent water feeding mechanism 42 further comprises a sliding block 425, a limiting block 426 and a mechanical spring valve 427. The surface of the supporting rod 46 is provided with a reciprocating thread 463. The sliding block 425 is sleeved with the supporting rod 46 in cooperation with the reciprocating thread 463. The inner wall of the tension roller 41 is provided with a limiting groove 411. The limiting block 426 is arranged on the sliding block 425 and is slidingly arranged in the limiting groove 411. The mechanical spring valve 427 is arranged on the L-shaped sleeve 422. The length of the reciprocating thread 463 is equal to the circumference of the cross section of the tension roller 41. When the supporting rod 46 rotates one circle, the sliding block 425 moves from one end to the other end of the reciprocating thread 463. When the supporting rod 46 rotates two circles, the sliding block 425 moves one round trip on the reciprocating thread 463 in the axial direction of the supporting rod 46. In the drawing, in order to facilitate the display of the reciprocating thread 463 on the supporting rod 46, the number of thread turns is relatively dense, which is not the actual number of turns. The mechanical spring valve 427 is located at one end of the reciprocating thread 463. When the sliding block 425 contacts the mechanical spring valve 427, the water outlet end of the water outlet pipe 424 is vertically upward. The elastic force of the mechanical spring valve 427 is greater than the pressure of the water pressure in the L-shaped sleeve 422 acting on the valve core, so as to ensure that the mechanical spring valve 427 remains reliably closed when it is not extruded.

[0039] Under the above setting conditions, water is sent to the inside of the slot 461 through the water inlet pipe 421, and the water flow entering the slot 461 will flow to the inside of the L-shaped sleeve 422 through the water outlet 462 opened on the side wall of the slot 461. Since the mechanical spring valve 427 (which is a top rod pressing type reset valve similar to the water valve of the water dispenser used in daily life, which keeps the water path closed when no pressing force is applied, and opens the water path channel when a pressing force is applied) is provided, the water flow cannot be discharged from the corresponding water outlet pipe 424. During the polishing operation, the flexible polishing belt 3 drives the tensioning roller 41 to rotate by friction, and the tensioning roller 41 rotates to drive the limiting block 426 to rotate synchronously by the sliding connection of the limiting block 426 and the limiting groove 411. Since the limiting block 426 is connected with the sliding block 425, the sliding block 425 also rotates synchronously with the limiting block 426. At the same time, since the support rod 46 is provided with a reciprocating thread 463, and the two ends of the support rod 46 are fixedly connected with the U-shaped plate 45, that is, the sliding block 425 can rotate around the axis of the support rod 46 as the rotating shaft, but the support rod 46 will not rotate. When the sliding block 425 rotates with the tensioning roller 41, it will reciprocate along the axial direction of the support rod 46 by the action of the reciprocating thread 463. When the sliding block 425 contacts the mechanical spring valve 427, the water outlet end of the water outlet pipe 424 is vertically upward. With the continuous rotation of the tensioning roller 41, the sliding block 425 begins to press the mechanical spring valve 427. After the mechanical spring valve 427 is pressed, the flow guide channel in the L-shaped sleeve 422 is opened, so that the water flow can smoothly flow into the corresponding water outlet pipe 424. When the tensioning roller 41 rotates, the water flow can flow from the water outlet end of the water outlet pipe 424 to contact the inner circle of the flexible polishing belt 3, which can ensure the polishing effect while avoiding water waste and splashing.

[0040] Working principle:

[0041] After the flexible polishing belt 3 is wound around the mounting frame 2 and the outer circle of the tensioning roller 41, the U-shaped plate 45 is connected with the driving frame 1 by bolts. The electric push rod 44 is started, and the output end of the electric push rod 44 drives the U-shaped plate 45 to move. Since the support rod 46 is fixedly arranged on the U-shaped plate 45 and rotatably connected with the tensioning roller 41, the U-shaped plate 45 will drive the tensioning roller 41 to gradually fit the inner circle of the flexible polishing belt 3 when it approaches the inner circle of the flexible polishing belt 3. Until the tensioning roller 41 tightens the flexible polishing belt 3 through the mounting frame 2 and the two driving rollers 51, the position of the driving frame 1 is adjusted by the driving device, so that the end position of the mounting frame 2 approaches the weld between the rotor support arm and the annular base, and the flexible polishing belt 3 is fitted with the weld.

[0042] The motor 52 is started and water is sent through the water inlet pipe 421, the output end of the motor 52 drives the corresponding driving roller 51 to rotate, the driving roller 51 rotates to drive the flexible polishing belt 3 and the tensioning roller 41 to rotate by utilizing the friction between the driving roller 51 and the flexible polishing belt 3, the flexible polishing belt 3 rotates to increase the polishing range through linear contact with the polishing position, thereby realizing efficient and high-quality polishing of the polishing position;

[0043] The inner wall of the tensioning roller 41 is provided with a limiting groove 411, and the limiting groove 411 is internally provided with a limiting block 426, the tensioning roller 41 drives the limiting block 426 to rotate synchronously when rotating, the limiting block 426 is provided with a sliding block 425, and the sliding block 425 is sleeved with the supporting rod 46 through the reciprocating thread 463 arranged on the surface of the supporting rod 46, the tensioning roller 41 drives the sliding block 425 to reciprocate along the axial direction of the supporting rod 46 when rotating, the sliding block 425 intermittently extrudes the mechanical spring valve 427 when moving, the mechanical spring valve 427 opens the flow guide channel in the L-shaped sleeve 422 after being extruded, so that the water flow can flow through the L-shaped sleeve 422 to the inside of the corresponding water outlet pipe 424 and finally be discharged from the water outlet pipe 424 to the inner ring surface of the flexible polishing belt 3, which can cool the polishing position while avoiding the scattering of polishing debris;

[0044] The diameter of the driving roller 51 is greater than that of the tensioning roller 41, the bending radius of the flexible polishing belt 3 when passing through the driving roller 51 is greater than that when passing through the tensioning roller 41, that is, the deformation degree of the pores on the outer ring surface of the flexible polishing belt 3 presents a periodic change of “large-small-large”, and the centrifugal force generated when the flexible polishing belt 3 rotates and the tension of the water flow on the debris in the pores can passively discharge the debris attached to the pores on the outer ring surface of the polishing belt, thereby further improving the polishing quality.

[0045] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A kind of pumped storage power station water turbine generator rotor support arm processing device, including drive frame (1), mounting frame (2) and the flexible polishing belt (3) being set on mounting frame (2), it is characterized by: It also includes a tensioning assembly (4) and a driving assembly (5), the tensioning assembly (4) is arranged in the mounting frame (2), the tensioning assembly (4) pushes the flexible polishing belt (3) from the inner ring when energized, the driving assembly (5) is arranged on the mounting frame (2) and is in contact with the inner ring of the flexible polishing belt (3), the driving assembly (5) drives the flexible polishing belt (3) to rotate around the mounting frame (2) when energized, the tensioning assembly (4) includes a tensioning roller (41) and an intermittent water supply mechanism (42), the tensioning roller (41) is in contact with the inner ring of the flexible polishing belt (3), the intermittent water supply mechanism (42) is arranged on the tensioning roller (41), the tensioning roller (41) rotates when the flexible polishing belt (3) rotates, and the intermittent water supply mechanism (42) intermittently supplies water to the flexible polishing belt (3) when the tensioning roller (41) rotates; the tensioning assembly (4) further includes a mounting plate (43), an electric push rod (44), a U-shaped plate (45) and a support rod (46), the mounting plate (43) is arranged on the mounting frame (2), the electric push rod (44) is arranged on the mounting plate (43), the U-shaped plate (45) is arranged on the output end of the electric push rod (44) and connected with the driving frame (1), the support rod (46) is arranged on the U-shaped plate (45), the tensioning roller (41) is hollowly arranged and sleeved on the support rod (46), and the diameter of the tensioning roller (41) is smaller than that of the driving roller (51); the intermittent water supply mechanism (42) includes a water inlet pipe (421), an L-shaped sleeve (422), a sleeve pipe (423) and a water outlet pipe (424), one end of the support rod (46) is provided with a slot (461), a side wall of the slot (461) is provided with a water outlet (462), the sleeve pipe (423) is arranged on the support rod (46) and covers the water outlet (462), one end of the L-shaped sleeve (422) penetrates through the sleeve pipe (423) and extends into the slot (461) through the water outlet (462), one end of the water outlet pipe (424) is arranged on the L-shaped sleeve (422) and communicates with the inside of the L-shaped sleeve (422), and the other end of the water outlet pipe (424) penetrates to the outside of the tensioning roller (41) and is tangent to the arc surface of the tensioning roller (41); the intermittent water supply mechanism (42) further includes a sliding block (425), a limiting block (426) and a mechanical spring valve (427), a reciprocating thread (463) is arranged on the surface of the support rod (46), the sliding block (425) is sleeved with the support rod (46) in cooperation with the reciprocating thread (463), a limiting groove (411) is arranged on the inner wall of the tensioning roller (41), the limiting block (426) is arranged on the sliding block (425) and is arranged in the limiting groove (411) in a sliding manner, and the mechanical spring valve (427) is arranged on the L-shaped sleeve (422).

2. A pumped storage power plant hydrogenerator rotor arm treatment apparatus according to claim 1, characterized in that: The driving assembly (5) comprises driving rollers (51) and motors (52), the mounting frame (2) is arranged in a "V" shape, two groups of fixing frames (21) are arranged on the mounting frame (2), two driving rollers (51) are arranged on the corresponding fixing frames (21) respectively, the motor (52) is arranged on the corresponding fixing frame (21) and the output end is connected with the rotating shaft of the corresponding driving roller (51), and the arc surface of the driving roller (51) is tangent to the plane where the outer wall of the mounting frame (2) is located.

3. A pumped storage power plant hydrogenerator rotor arm treatment apparatus according to claim 2, characterized in that: The distance between the tension roller (41) and the two driving rollers (51) is set as The distance between the two driving rollers (51) is set as , and .

4. A pumped storage power plant hydrogenerator rotor spider treatment apparatus as claimed in claim 1, characterized in that: The reciprocating thread (463) is equal in axial length to the cross-sectional circumference of the supporting rod (46), and the number of turns of the reciprocating thread (463) is two.

5. A pumped storage power plant hydrogenerator rotor arm treatment apparatus according to claim 1, characterized in that: The mechanical spring valve (427) is located at one end of the reciprocating thread (463), and when the sliding block (425) is in contact with the mechanical spring valve (427), the water outlet end of the water outlet pipe (424) is vertically upward.

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