Treatment device for rotor support arm of hydraulic generator of pumped storage power station

Abstract

The invention relates to the technical field of rotor machining equipment, in particular to a pumped storage power station hydro-generator rotor supporting arm processing device which comprises a driving frame, a mounting frame and a flexible polishing belt arranged on the mounting frame and further comprises a tensioning assembly and a driving assembly. When the tensioning assembly is powered on and started, the flexible polishing belt is pushed from the inner ring, and the driving assembly is arranged on the mounting frame and attached to the inner ring of the flexible polishing belt. Through the arrangement of the mounting frame, the tensioning assembly, the driving assembly and the intermittent water supply mechanism, the flexible polishing belt can make linear contact with a welding seam, the contact range of the flexible polishing belt and the polishing position is enlarged, and meanwhile the polishing position can be cooled; and scraps attached to the pores in the surface of the outer ring of the flexible polishing belt can be passively discharged while continuous polishing is guaranteed, and the effect of improving the polishing quality and the polishing efficiency is achieved.

Description

Technical Field

[0001] This invention relates to the field of rotor processing equipment technology, specifically to a rotor support arm processing device for a pumped storage power station turbine generator. Background Technology

[0002] A hydro-generator is a generator that uses a hydro turbine as its prime mover to convert water energy into electrical energy. The rotor support arm of a hydro-generator is the core load-bearing and connecting component of the rotor structure. However, during manufacturing, transportation, or long-term operation, problems such as uneven surface and dimensional deviations may occur due to welding deformation, impact and wear. Therefore, the rotor support arm needs to be polished to ensure the efficient operation of the hydro-generator.

[0003] Polishing refers to a processing method that uses mechanical, chemical, or electrochemical actions to reduce the surface roughness of a workpiece to obtain a bright and smooth surface. During the production of hydroelectric generator rotors, polishing is necessary to ensure quality. Since the rotor has multiple different surfaces requiring polishing, polishing relies heavily on the experience of the workers, severely impacting polishing efficiency and quality. To address this issue, existing technologies offer relatively good solutions, such as the rotor polishing device for medium-frequency brushless synchronous generators (publication number CN111702617B). This device, through a transmission mechanism, can automatically polish the rotor using an external toothed polishing belt, improving polishing efficiency and quality. However, the following drawback remains: because the rotor support arm is welded to the rotor center body and the annular bases at both ends of the rotor center body, and the rotor support arm and the annular base are perpendicular (i.e., the weld joint is a right angle), the polishing belt is constrained by the right angle and cannot fully contact the polishing position, also affecting polishing quality and efficiency.

[0004] Therefore, in order to solve the above problems, a rotor support arm treatment device for pumped storage power station turbine generators is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a processing device for the rotor support arm of a pumped-storage power station turbine generator, which solves the problem of insufficient contact between the polishing belt and the polishing position, thus affecting polishing quality and efficiency. Through the installation frame, tensioning assembly, drive assembly, and intermittent water supply mechanism, the flexible polishing belt can achieve linear contact with the weld seam, increasing the contact range between the flexible polishing belt and the polishing position. Simultaneously, it allows adjustment of the bending radius during rotation, causing varying degrees of tension on the pores of its outer surface as the bending radius changes. Furthermore, the intermittent water supply mechanism delivers water from the inner ring of the flexible polishing belt, which, while cooling the belt, utilizes the centrifugal force generated during rotation and the surface tension of the water to assist in the removal of debris from the pores, effectively ensuring polishing quality and efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A rotor support arm treatment device for a pumped storage power station turbine generator includes a drive frame, a mounting frame, and a flexible polishing belt mounted on the mounting frame. It also includes a tensioning assembly and a drive assembly. The tensioning assembly is located within the mounting frame and, when energized, pushes the flexible polishing belt from its inner ring. The drive assembly is mounted on the mounting frame and fits against the inner ring of the flexible polishing belt. When energized, the drive assembly drives the flexible polishing belt to rotate around the mounting frame. The tensioning assembly includes a tension roller and an intermittent water supply mechanism. The tension roller fits against the inner ring of the flexible polishing belt, and the intermittent water supply mechanism is located on the tension roller. When the flexible polishing belt rotates, it drives the tension roller to rotate, and when the tension roller rotates, the intermittent water supply mechanism intermittently supplies water to the flexible polishing belt.

[0007] Preferably, the drive assembly includes a drive roller and a motor. The mounting frame is V-shaped with an acute angle at its ends. Two sets of fixed frames are provided on the mounting frame. Two drive rollers are provided and are respectively mounted on their corresponding fixed frames. The motor is mounted on its corresponding fixed frame and its output end is connected to the shaft of the corresponding drive roller. The surface of the drive roller is frosted to increase the friction between the drive roller and the flexible polishing belt, so as to smoothly drive the flexible polishing belt to rotate when the drive roller rotates, thereby achieving efficient polishing of the polishing position. The arc surface of the drive roller is tangent to the plane of the outer wall of the mounting frame. When the two are tangent, the inner ring of the polishing belt can be completely attached to the surface of the mounting frame. When it is necessary to polish the planar position of the rotor arm, the polishing belt can be completely attached to the surface of the rotor arm, thereby ensuring efficient and high-quality polishing of the planar position.

[0008] As can be seen, since the weld between the rotor support arm and the annular bases at both ends of the rotor is at a right angle, when polishing with conventional polishing equipment, workers usually need to hold a flexible polishing belt or polishing wheel to make it fit against the weld position. However, due to the influence of the right angle, the contact range between the flexible polishing belt or polishing wheel and the polishing area is limited, which seriously affects the polishing efficiency and quality. Therefore, this solution is adopted. By setting a mounting bracket with an acute-angled end, the end position of the mounting bracket can be locked at the weld position to be polished during polishing. At this time, the flexible polishing belt wrapped around the mounting bracket can be linearly fitted with the weld, effectively increasing the polishing range and ensuring effective polishing of the weld, thereby ensuring polishing efficiency and polishing quality.

[0009] Preferably, the tensioning assembly further includes a mounting plate, an electric push rod, a U-shaped plate, and a support rod. The mounting plate is mounted on the mounting frame, the electric push rod is mounted on the mounting plate, the U-shaped plate is located at the output end of the electric push rod and connected to the drive frame, and the support rod is fixedly mounted on the U-shaped plate to ensure the support effect of the support rod. The tensioning roller is hollow and sleeved on the support rod. The tensioning roller and the support rod are rotatably sleeved, so that the tensioning roller can rotate smoothly while having a tensioning effect. When the tensioning roller rotates, the support rod will not rotate under the restriction of the U-shaped plate. The diameter of the tensioning roller is smaller than the diameter of the drive roller.

[0010] It is known that polishing with a flexible polishing belt relies on mechanical friction, which generates debris and high temperatures. The conventional approach is to add water to the polishing area, which cools the belt and prevents debris from scattering. However, the debris adheres to the outer surface of the flexible polishing belt, affecting polishing quality. Therefore, this solution is adopted. By setting the tension roller and adjusting the diameters of the drive roller and tension roller, the bending radius of the flexible polishing belt is adjusted as it passes the drive roller and tension roller, ensuring its normal polishing function while maintaining proper tension. This results in different degrees of pore deformation on the outer surface of the flexible polishing belt as it passes the drive roller and tension roller, passively expelling debris adhering to the outer surface of the flexible polishing belt due to pore deformation, thus improving the polishing quality of the flexible polishing belt.

[0011] Preferably, the distance between the tensioning roller and the two drive rollers is set to... The distance between the two drive rollers is set to ,and .

[0012] By adopting the above scheme, the contact area between the flexible polishing belt and the tension roller surface can be increased, the bending radius of the flexible polishing belt when passing through the tension roller can be further reduced, the deformation degree of the outer ring surface pores of the flexible polishing belt when passing through the drive roller and tension roller can be expanded, the passive discharge of debris attached to the outer ring surface of the flexible polishing belt can be assisted, and the polishing quality can be further improved.

[0013] Preferably, the intermittent water supply mechanism includes an inlet pipe, an L-shaped sleeve, a casing, and an outlet pipe. One end of the support rod has a slot, and the side wall of the slot has an outlet. The casing is mounted on the support rod and covers the outlet. One end of the L-shaped sleeve passes through the casing and extends into the slot through the outlet. One end of the outlet pipe is mounted on the L-shaped sleeve and communicates with the inside of the L-shaped sleeve. The other end of the outlet pipe passes through the outside of the tension roller and its end is tangent to the arc surface of the tension roller.

[0014] By adopting the above scheme, water can be added from the inner ring of the flexible polishing belt. With the centrifugal force generated when the flexible polishing belt (which can be made of non-woven / woven fabric + polyurethane material to ensure its water permeability) rotates, as well as the water's penetrating ability, water can be transported from the inner ring to the outer ring of the flexible polishing belt. When water is transported from the inner ring to the outer ring, the centrifugal force and the surface tension of the water can enhance the removal of debris adhering to the pores of the outer ring of the flexible polishing belt, thereby ensuring the polishing quality of the flexible polishing belt.

[0015] Preferably, the intermittent water supply mechanism further includes a slider, a limit block, and a mechanical spring valve. The surface of the support rod is provided with a reciprocating thread, the slider is sleeved with the support rod in cooperation with the reciprocating thread, the inner wall of the tension roller is provided with a limit groove, the limit block is set on the slider and slidably set inside the limit groove, and the mechanical spring valve is set on the L-shaped sleeve.

[0016] By adopting the above scheme, while achieving water delivery from the inner ring of the flexible polishing belt, the rotation of the tension roller can drive the slider to intermittently squeeze the mechanical spring valve, thereby intermittently controlling the water flow and achieving timed and quantitative water addition. This avoids slippage at the polishing position due to excessive water addition at one time, thus ensuring polishing quality.

[0017] Preferably, the axial length of the reciprocating thread along the support rod is equal to the circumference of the tension roller cross section, 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 slider contacts the mechanical spring valve.

[0018] By adopting the above scheme, the tension roller rotates exactly two revolutions when the slider moves along the axial direction of the support rod and finally returns to its original position to contact the mechanical spring valve. That is, the water outlet pipe is in the same position every time the slider contacts the mechanical spring valve. As the tension roller continues to rotate, all the water discharged from the water outlet pipe can be guided to the inner surface of the flexible polishing belt, avoiding water splashing. At this time, the position of the flexible polishing belt in contact with the tension roller can be fully wetted. Since the bending radius of the flexible polishing belt at the tension roller is smaller than that at the drive roller, some water will be squeezed out and further enhance the removal of debris from the pores on the outer surface of the flexible polishing belt, thus further ensuring the polishing quality.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By using a mounting frame, drive roller, and tension roller with acute-angled ends, the outer surface of the flexible polishing belt can make linear contact with the right-angle weld position through the end of the mounting frame during polishing. This effectively increases the contact range between the flexible polishing belt and the right-angle weld position, while enabling continuous polishing operations as the flexible polishing belt rotates. At the same time, it can automatically adjust its bending radius as it passes the drive roller and tension roller according to the diameter changes of the drive roller and tension roller, achieving different degrees of pulling on the pores of its outer surface, passively expelling the debris attached to the pores, and effectively ensuring the polishing quality.

[0020] 2. With the water inlet pipe and multiple water outlet pipes, water can be supplied from the inner ring of the flexible polishing belt when the tension roller rotates. When the flexible polishing belt rotates, the centrifugal force generated helps the water flow to penetrate from the inner ring to the outer ring of the flexible polishing belt. Furthermore, during the water flow penetration, the tension of the water flow on the debris helps the debris to be discharged from the pores on the surface of the outer ring of the flexible polishing belt, further ensuring the polishing quality.

[0021] 3. By using a slider, a mechanical spring valve, and reciprocating threads on the surface of the support rod, the slider can be driven to intermittently squeeze the mechanical spring valve along the axial direction of the support rod when the tension roller rotates. Under the constraints of the length of the reciprocating thread and the circumference of the cross-section of the tension roller, the water outlet pipe is in the same position each time the slider squeezes the mechanical spring valve. This not only achieves intermittent water delivery to the flexible polishing belt but also avoids water scattering and slippage, further ensuring the polishing effect. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the connection structure between the mounting frame, the flexible polishing belt, the tensioning component, and the driving component of the present invention. Figure 3 This is an exploded view of the intermittent water delivery mechanism of the present invention; Figure 4 This is a partial cross-sectional view of the connection structure between the tension roller and the intermittent water supply mechanism of the present invention. Figure 5 For the present invention Figure 4 Enlarged view of part A in the middle section; Figure 6 This is a diagram showing the positional relationship between the tensioning roller and the two drive rollers of the present invention.

[0023] In the diagram: 1. Drive frame; 2. Mounting frame; 21. Fixing frame; 3. Flexible polishing belt; 4. Tensioning assembly; 41. Tensioning roller; 411. Limiting groove; 42. Intermittent water supply mechanism; 421. Water inlet pipe; 422. L-shaped sleeve; 423. Sleeve; 424. Water outlet pipe; 425. Slider; 426. Limiting block; 427. Mechanical spring valve; 43. Mounting plate; 44. Electric push rod; 45. U-shaped plate; 46. Support rod; 461. Slot; 462. Water outlet; 463. Reciprocating thread; 5. Drive assembly; 51. Drive roller; 52. Motor. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see Figures 1 to 6 This invention provides a device for processing the rotor support arm of a pumped storage power station turbine generator, the technical solution of which is as follows: For details, please refer to Figure 1 and Figure 2A device for processing the rotor support arm of a pumped storage power station turbine generator includes a drive frame 1, a mounting frame 2, and a flexible polishing belt 3 mounted on the mounting frame 2. The drive frame 1 can be driven by a drive device, which includes, but is not limited to, a multi-axis industrial robot, capable of moving the entire device to the polishing position. It also includes a tensioning component 4 and a drive component 5. The drive component 5 is mounted on the mounting frame 2 and fits against the inner ring of the flexible polishing belt 3. The drive component 5 includes a drive roller 51 and a motor 52. The mounting frame 2 is V-shaped with an acute angle at its ends. Two sets of fixed frames 21 are mounted on the mounting frame 2. Two drive rollers 51 are respectively mounted on corresponding fixed frames 21. The motor 52 is mounted on a corresponding fixed frame 21, and its output end is connected to the corresponding drive roller 51. The rotating shaft connection and the frosted surface of the drive roller 51 increase the friction between the drive roller 51 and the flexible polishing belt 3, so that the flexible polishing belt 3 can be smoothly driven to rotate when the drive roller 51 rotates, thereby achieving efficient polishing of the polishing position. At the same time, an annular groove can be opened on the surface of the drive roller 51 to hold the flexible polishing belt 3 inside the annular groove, preventing the flexible polishing belt 3 from moving along the axial direction of the drive roller 51 during polishing, thus ensuring the normal progress of the polishing operation. The arc surface of the drive roller 51 is tangent to the plane of the outer wall of the mounting frame 2. When the two are tangent, the inner ring of the polishing belt can be completely attached to the surface of the mounting frame 2. When it is necessary to polish the plane position of the rotor support arm, the polishing belt can be completely attached to the surface of the rotor support arm, thereby ensuring efficient and high-quality polishing of the plane position.

[0026] Under the above-mentioned settings, during polishing, the end of the mounting frame 2 is moved to the polishing position, and the motor 52 is started. The output end of the motor 52 drives the corresponding drive roller 51 to rotate. When the drive roller 51 rotates, it drives the flexible polishing belt 3 to rotate around the mounting frame 2 through the friction between itself and the flexible polishing belt 3. This allows for the polishing of the weld seams of the rotor support arm and the annular base at both ends of the rotor, ensuring the normal progress of the polishing operation. Furthermore, it increases the contact range between the flexible polishing belt 3 and the polishing position during polishing, effectively ensuring polishing efficiency and quality. When it is necessary to polish the planar position of the rotor support arm, the angle of the mounting frame 2 is adjusted so that the flexible polishing belt 3 fits against the planar position of the rotor support arm surface, ensuring efficient and high-quality polishing of the planar position.

[0027] As one embodiment of the present invention, refer to Figure 1 , Figure 2 and Figure 6The tensioning assembly 4 is housed within the mounting frame 2. The tensioning assembly 4 includes a tensioning roller 41 and an intermittent water supply mechanism 42. It also includes a control module, with an electric push rod 44 electrically connected to it. This control module receives current feedback signals from the motor 52 in the drive assembly 5. When the motor 52 current is below a preset lower threshold (indicating that the flexible polishing belt 3 is slack), it controls the output end of the electric push rod 44 to extend to increase the tension. When the motor 52 current is above a preset upper threshold (indicating that the tension is too high), it controls the output end of the electric push rod 44 to retract to decrease the tension. This closed-loop control achieves dynamic stability of the tension of the flexible polishing belt 3. The tension roller 41 is fitted against the inner ring of the flexible polishing belt 3. The tensioning assembly 4 also 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 mounted on the mounting frame 2, the electric push rod 44 is mounted on the mounting plate 43, and the U-shaped plate 45 is located at the output end of the electric push rod 44 and is detachably connected to the drive frame 1 by bolts to facilitate replacement of the flexible polishing belt 3 after prolonged use. The support rod 46 is fixedly mounted on the U-shaped plate 45 to ensure the support effect of the support rod 46. The tension roller 41 is hollow and rotatably mounted on the support rod 46 via bearings. The tension roller 41 and support rod 46 are rotatably connected, allowing the tension roller 41 to rotate smoothly while providing tension. To facilitate the installation and maintenance of the internal components of the tension roller 41, it can be designed as two half-rollers, which are then spliced ​​together to form a complete tension roller 41, ensuring its normal operation. The diameter of the tension roller 41 is smaller than the diameter of the drive roller 51, and the distance between the tension roller 41 and the two drive rollers 51 is set to... The distance between the two drive rollers 51 is set to ,and .

[0028] Under the above-mentioned conditions, after the flexible polishing belt 3 is wound around the mounting frame 2 and the drive roller 51, the U-shaped plate 45 is fixedly connected to the drive frame 1 with 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 tension roller 41 is connected to the U-shaped plate 45 through the support rod 46, the U-shaped plate 45 can drive the tension roller 41 to move closer to the inner circle of the flexible polishing belt 3 during the movement, until the tension roller 41 tensions the flexible polishing belt 3 through the mounting frame 2 and the two drive rollers 51, so as to prevent the flexible polishing belt 3 from slipping during the rotation of the drive roller 51. As the flexible polishing belt 3 continues to rotate, the flexible polishing belt 3 will continuously pass through the surfaces of the two drive rollers 51 and the tension roller 41, and will automatically adjust the bending radius according to the diameter changes of the drive roller 51 and the tension roller 41 when passing through the surface of the tension roller 41, so that the porosity of its outer circle surface will continuously change, so that the debris attached to the porosity of the outer circle surface of the flexible polishing belt 3 is passively discharged, ensuring the polishing quality.

[0029] As one embodiment of the present invention, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The intermittent water supply mechanism 42 is mounted on the tension roller 41. The intermittent water supply mechanism 42 includes an inlet pipe 421, an L-shaped sleeve 422, a tubing 423, and an outlet pipe 424. One end of the support rod 46 has a slot 461, and the side wall of the slot 461 has an outlet 462. The tubing 423 is mounted on the support rod 46 and covers the outlet 462. One end of the L-shaped sleeve 422 passes through the tubing 423 and extends through the outlet 462 to the slot 424. Inside 61, one end of the water outlet pipe 424 is set on the L-shaped sleeve 422 and connected to the inside of the L-shaped sleeve 422. The other end of the water outlet pipe 424 passes through the outside of the tension roller 41 and its end is tangent to the arc surface of the tension roller 41. Here, the sleeve 423 and the support rod 46 can be rotatably connected by a sealed bearing to prevent water leakage from the gap between the slider 425 and the support rod 46, while ensuring that the sleeve 423 can rotate normally under the connection between the water outlet pipe 424 and the tension roller 41. The intermittent water delivery mechanism 42 further includes a slider 425, a limiting block 426, and a mechanical spring valve 427. The surface of the support rod 46 is provided with a reciprocating thread 463. The slider 425 engages with the support rod 46 via the reciprocating thread 463. The inner wall of the tension roller 41 has a limiting groove 411. The limiting block 426 is mounted on the slider 425 and slidably disposed within the limiting groove 411. The mechanical spring valve 427 is mounted on an 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, so that when the support rod 46 rotates one revolution, the slider 425 moves from one end of the reciprocating thread 463. Move to the other end, and when the support rod 46 rotates two revolutions, the slider 425 moves back and forth along the axial direction of the support rod 46 on the reciprocating thread 463. In the attached figure, for the convenience of showing the reciprocating thread 463 on the support rod 46, the number of thread turns is set to be 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 slider 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 not squeezed.

[0030] Under the above-mentioned conditions, water is supplied to the interior of the slot 461 through the inlet pipe 421. The water flows into the slot 461 and flows through the outlet 462 on the side wall of the slot 461 to the interior of the L-shaped sleeve 422. Due to the presence of a mechanical spring valve 427 (which is a push-button type reset valve, similar to the water valve of a water dispenser used in daily life, which keeps the water passage closed when not pressed and opens the water passage when pressed), the water cannot be discharged from the corresponding outlet pipe 424. During polishing, the flexible polishing belt 3 drives the tension roller 41 to rotate through friction. As the tension roller 41 rotates, the sliding connection between the limiting block 426 and the limiting groove 411 causes the limiting block 426 to rotate synchronously. Since the limiting block 426 is connected to the slider 425, the slider 425 also rotates synchronously with the limiting block 426. Simultaneously, because the support rod 46 is provided with a reciprocating thread 463, and both ends of the support rod 46 are fixedly connected to the U-shaped plate 45, the slider 425 can rotate about the axis of the support rod 46, but the support rod 46 itself does not rotate. When the slider 425 rotates with the tension roller 41, it will... The function of the double thread 463 is to reciprocate along the axial direction of the support rod 46. When the slider 425 contacts the mechanical spring valve 427, the water outlet end of the water outlet pipe 424 is vertically upward. As the tension roller 41 continues to rotate, the slider 425 begins to squeeze the mechanical spring valve 427. After being squeezed, the mechanical spring valve 427 opens the guide channel inside the L-shaped sleeve 422, allowing the water to flow smoothly into the corresponding water outlet pipe 424. When the tension roller 41 rotates, the water can flow from the water outlet end of the water outlet pipe 424 to contact the inner ring of the flexible polishing belt 3, ensuring the polishing effect while avoiding water waste and splashing.

[0031] Working principle: After the flexible polishing belt 3 is wound around the mounting frame 2 and the outer ring of the tension roller 41, the U-shaped plate 45 is connected to the drive 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 set on the U-shaped plate 45 and rotates and is sleeved with the tension roller 41, when the U-shaped plate 45 is close to the inner ring of the flexible polishing belt 3, it will drive the tension roller 41 to gradually fit with the inner ring of the flexible polishing belt 3 until the tension roller 41 tensions the flexible polishing belt 3 through the mounting frame 2 and the two drive rollers 51. The position of the drive frame 1 is adjusted by the drive equipment so that the end position of the mounting frame 2 is close to the weld between the rotor support arm and the annular base, and the flexible polishing belt 3 is fitted with the weld. The motor 52 is started and water is supplied through the water inlet pipe 421. The output end of the motor 52 drives the corresponding drive roller 51 to rotate. When the drive roller 51 rotates, it uses the friction between itself and the flexible polishing belt 3 to drive the flexible polishing belt 3 and the tension roller 41 to rotate. When the flexible polishing belt 3 rotates, it increases the polishing range through linear contact with the polishing position, thereby achieving efficient and high-quality polishing of the polishing position. Because the inner wall of the tension roller 41 has a limiting groove 411 and a limiting block 426 is slidably provided inside the limiting groove 411, when the tension roller 41 rotates, it will drive the limiting block 426 to rotate synchronously. Because the limiting block 426 is provided with a slider 425, and the slider 425 is sleeved with the support rod 46 through the reciprocating thread 463 provided on the surface of the support rod 46, when the tension roller 41 rotates, it can drive the slider 425 to reciprocate along the axial direction of the support rod 46 through the limiting block 426. When the slider 425 moves, it intermittently squeezes the mechanical spring valve 427. After being squeezed, the mechanical spring valve 427 opens the guide channel inside the L-shaped sleeve 422, so that the water can flow through the L-shaped sleeve 422 to 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. While cooling the polishing position, it can also prevent the debris generated by polishing from scattering. Since the diameter of the drive roller 51 is larger than that of the tension roller 41, the bending radius of the flexible polishing belt 3 when passing through the drive roller 51 is larger than that when passing through the tension roller 41. In other words, the deformation degree of the pores on the outer surface of the flexible polishing belt 3 exhibits a periodic change of "large-small-large". Accompanied by the centrifugal force generated when the flexible polishing belt 3 rotates and the tension effect of the water flow on the debris in the pores, the debris attached to the pores on the outer surface of the polishing belt can be passively discharged, thereby further improving the polishing quality.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A processing device for the rotor support arm of a pumped storage power station turbine generator, comprising a drive frame (1), a mounting frame (2), and a flexible polishing belt (3) disposed on the mounting frame (2), characterized in that: It also includes a tensioning component (4) and a driving component (5). The tensioning component (4) is disposed inside the mounting frame (2). When the tensioning component (4) is powered on, it pushes the flexible polishing belt (3) from the inner ring. The driving component (5) is disposed on the mounting frame (2) and fits against the inner ring of the flexible polishing belt (3). When the driving component (5) is powered on, it drives the flexible polishing belt (3) to rotate around the mounting frame (2). The tensioning component (4) includes a tensioning roller (41) and an intermittent water supply mechanism (42). The tensioning roller (41) fits against the inner ring of the flexible polishing belt (3). The intermittent water supply mechanism (42) is disposed on the tensioning roller (41). When the flexible polishing belt (3) rotates, it drives the tensioning roller (41) to rotate. When the tensioning roller (41) rotates, the intermittent water supply mechanism (42) intermittently supplies water to the flexible polishing belt (3).

2. The device for handling the rotor support arm of a pumped storage power station turbine generator according to claim 1, characterized in that: The drive assembly (5) includes a drive roller (51) and a motor (52). The mounting frame (2) is arranged in a "V" shape. Two sets of fixed frames (21) are provided on the mounting frame (2). There are two drive rollers (51) and they are respectively set on the corresponding fixed frames (21). The motor (52) is set on the corresponding fixed frame (21) and its output end is connected to the rotating shaft of the corresponding drive roller (51). The arc surface of the drive roller (51) is tangent to the plane of the outer wall of the mounting frame (2).

3. The device for handling the rotor support arm of a pumped storage power station turbine generator according to claim 2, characterized in that: 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 mounted on the mounting frame (2). The electric push rod (44) is mounted on the mounting plate (43). The U-shaped plate (45) is located at the output end of the electric push rod (44) and connected to the drive frame (1). The support rod (46) is mounted on the U-shaped plate (45). The tensioning roller (41) is hollow and sleeved on the support rod (46). The diameter of the tensioning roller (41) is smaller than the diameter of the drive roller (51).

4. The device for handling the rotor support arm of a pumped storage power station turbine generator according to claim 2, characterized in that: The distance between the tensioning roller (41) and the two drive rollers (51) is set to The distance between the two drive rollers (51) is set to ,and .

5. The device for handling the rotor support arm of a pumped storage power station turbine generator according to claim 3, characterized in that: The intermittent water supply mechanism (42) includes an inlet pipe (421), an L-shaped sleeve (422), a sleeve (423), and an outlet pipe (424). One end of the support rod (46) is provided with a slot (461), and the side wall of the slot (461) is provided with an outlet (462). The sleeve (423) is set on the support rod (46) and covers the outlet (462). One end of the L-shaped sleeve (422) passes through the sleeve (423) and extends into the slot (461) through the outlet (462). One end of the outlet pipe (424) is set on the L-shaped sleeve (422) and communicates with the inside of the L-shaped sleeve (422). The other end of the outlet pipe (424) passes through the outside of the tension roller (41) and its end is tangent to the arc surface of the tension roller (41).

6. The device for handling the rotor support arm of a pumped storage power station turbine generator according to claim 5, characterized in that: The intermittent water delivery mechanism (42) also includes a slider (425), a limiting block (426), and a mechanical spring valve (427). The surface of the support rod (46) is provided with a reciprocating thread (463). The slider (425) is fitted with the reciprocating thread (463) and sleeved with the support rod (46). The inner wall of the tension roller (41) is provided with a limiting groove (411). The limiting block (426) is set on the slider (425) and slidably set inside the limiting groove (411). The mechanical spring valve (427) is set on the L-shaped sleeve (422).

7. The pumped storage power station turbine generator rotor support arm processing device according to claim 6, characterized in that: The axial length of the reciprocating thread (463) along the support rod (46) is equal to the circumference of the cross section of the tension roller (41), and the number of turns of the reciprocating thread (463) is two turns.

8. The pumped storage power station turbine generator rotor support arm handling device according to claim 6, characterized in that: The mechanical spring valve (427) is located at one end of the reciprocating thread (463), and when the slider (425) contacts the mechanical spring valve (427), the outlet end of the water pipe (424) is vertically upward.

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