A dividing and positioning device for the lower slot of a pumped storage rotor

Abstract

This utility model relates to the field of machining technology, specifically disclosing an indexing and positioning device for a pumped storage rotor's lower slot; it includes: a base, a drive unit, and a clamping unit; the drive unit is disposed on the base and includes a drive motor and a rotating shaft that is transmitted to the drive motor via a commutator; the clamping unit includes a clamping head fixedly connected to one end of the rotating shaft; the other end of the rotating shaft is also fixedly provided with a position fixing block and an indexing plate, the position fixing block having a plurality of fixing grooves at an angle in its circumferential direction; the rotating shaft also has a fixing frame at the end where the fixing block is disposed, the fixing frame having a limiting groove whose position is adapted to the fixing groove, and the rotation of the rotating shaft is restricted by setting a positioning pin in the limiting groove and the fixing groove; the indexing plate has scale markings at angular intervals, and the fixing frame has scale lines corresponding to the scale markings.

Description

Technical Field

[0001] This utility model relates to the field of mechanical processing technology, and in particular to an indexing and positioning device for the lower slot of a pumped storage rotor. Background Technology

[0002] In the field of pumped storage power station equipment manufacturing and maintenance, the indexing and positioning of the rotor lower slot is of paramount importance.

[0003] Traditional indexing and positioning equipment has many drawbacks. For example, Chinese patent document "CN201820679450, an indexing and positioning device for the lower slot of a generator rotor," while achieving indexing and positioning of the rotor to a certain extent, still reveals the problem of large machine tool size and difficulty in deployment in practical applications, making it difficult to operate in space-constrained environments. Furthermore, the on-site processing preparation time is long, requiring extensive equipment debugging and positioning work before each processing operation, which significantly reduces work efficiency and increases production costs.

[0004] To address the issues of large machine tool size making deployment difficult, long on-site processing preparation time, and low efficiency, this solution adopts a detachable modular structure and a quick-positioning mechanism to achieve rapid equipment assembly and positioning, significantly improving the convenience and efficiency of on-site processing. Utility Model Content

[0005] In view of this, this utility model provides an indexing and positioning device for the lower slot of a pumped storage rotor, which solves the problems of large size of special machine tools, difficulty in deployment, and long on-site processing preparation time leading to low work efficiency.

[0006] This utility model embodiment provides an indexing and positioning device for the lower slot of a pumped storage rotor, comprising: a base; a drive unit, disposed on the base and including a drive motor and a rotating shaft that is transmittedly connected to the drive motor via a commutator; a clamping unit, including a clamping head fixedly connected to one end of the rotating shaft; a position fixing block and an indexing plate are also fixedly disposed at the other end of the rotating shaft, the position fixing block having a plurality of fixing grooves at an angle in its circumferential direction; a fixing frame is also disposed at the end of the rotating shaft where the fixing block is disposed, the fixing frame having a limiting groove whose position is adapted to the fixing groove, and the rotation of the rotating shaft is restricted by setting a positioning pin in the limiting groove and the fixing groove; the indexing plate has scale markings at angular intervals, and the fixing frame has scale lines corresponding to the scale markings.

[0007] Preferably, it further includes a receiving seat spaced apart from the base; the receiving seat includes a detachable base and a rotating seat; the rotating seat has a rotation space for accommodating the rotor, and the rotation space is coaxial with the clamping head.

[0008] Preferably, the rotary seat further includes at least one pair of rotary bearings disposed in the rotation space; the pair of rotary bearings are further provided with bearing bushes that support the rotor.

[0009] Preferably, the top of the rotating base is provided with a first limiting hole communicating with the rotation space, and the rotation of the bearing bush can be restricted by providing a first limiting shaft extending from the first limiting hole into the rotation space.

[0010] Preferably, an abutment seat is provided at the end of the receiving seat away from the base; the abutment seat includes a mounting seat and a rotating cylinder disposed on the top of the mounting seat; the rotating cylinder is provided with an abutment shaft that can rotate the cylinder based on the rotating cylinder.

[0011] Preferably, the abutting shaft is further provided with an abutting pad at one end near the receiving seat.

[0012] Preferably, the abutment shaft is further provided with a rotating part fixedly connected to the abutment shaft at one end away from the receiving seat.

[0013] Preferably, the top of the rotating drum is further provided with a second limiting hole communicating with the interior of the rotating drum, and the rotation of the abutment shaft can be restricted by providing a second limiting shaft extending from the second limiting hole into the interior of the rotating drum.

[0014] Preferably, the rotation space is arranged coaxially with the clamping head and the rotating drum.

[0015] The indexing and positioning device for the lower slot of a pumped storage rotor provided by this utility model has the following features:

[0016] Beneficial effects:

[0017] This technical solution utilizes a detachable modular structure to break down the equipment into smaller, manageable parts, significantly reducing the difficulty of machine tool deployment and enabling the equipment to flexibly adapt to different operating environments. Simultaneously, the rapid-stop mechanism and indexing positioning structure work closely together, with the drive unit precisely rotating the shaft. This, combined with the position fixing block, indexing plate, and positioning pins, achieves rapid positioning and accurate indexing. Components such as the receiving seat and abutment seat work in concert to ensure stable rotor clamping. These structural designs significantly reduce on-site machining preparation processes, optimize operating steps, and greatly improve the convenience and efficiency of on-site machining, providing a more efficient and flexible solution for the indexing and positioning of pumped storage rotors in the slot. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, and these are all within the protection scope of this utility model.

[0019] Figure 1 This is a schematic diagram of the machining process for an indexing and positioning device used in the lower slot of a pumped storage rotor;

[0020] Figure 2 This is a schematic diagram of an indexing and positioning device for the lower slot of a pumped storage rotor;

[0021] Figure 3 This is a structural schematic diagram of the support seat;

[0022] Figure 4 This is a structural diagram of the abutment seat;

[0023] Parts and component numbers in the diagram:

[0024] 100-rotor;

[0025] 200-Base, 210-Drive unit, 211-Drive motor, 212-Commutator, 213-Shaft, 214-Fixing slot, 220-Index plate, 221-Scale indication, 230-Fixing bracket, 231-Fixing block, 232-Limiting slot, 233-Positioning pin, 234-Scale line, 241-Clamping head;

[0026] 300-Receiving seat, 310-Base, 320-Rotating seat, 321-Rotation space, 322-Rotation bearing, 323-Bearing bush, 324-First limiting hole, 325-First limiting shaft;

[0027] 400-Abutment seat, 410-Mounting seat, 420-Rotating cylinder, 421-Abutment shaft, 423-Abutment pad, 424-Second limiting hole, 425-Second limiting shaft, 430-Rotating part. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. It should be noted that, in this document, relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. Unless otherwise specified, embodiments of the present invention and the various features thereof can be combined with each other, all within the protection scope of the present invention.

[0029] Example 1

[0030] Please see Figure 1 and Figure 2This utility model embodiment provides an indexing and positioning method for the lower slot of a pumped storage rotor 100, including a base 200 and a driving part 210 and a clamping part disposed on the base 200; the driving part 210 is disposed on the base 200 and includes a drive motor 211 and a rotating shaft 213 that is transmitted to the drive motor 211 via a commutator 212; the clamping part includes a clamping head 241 fixedly connected to one end of the rotating shaft 213; the other end of the rotating shaft 213 is also fixedly provided with a position fixing block 231 and an indexing plate 220. The position fixing block 231 is provided with a plurality of fixing grooves 214 at an angle in its circumferential direction; the rotating shaft 213 is also provided with a fixing frame 230 at one end where the fixing block 231 is located, and the fixing frame 230 is provided with a limiting groove 232 whose position is adapted to the fixing groove 214. The rotation of the rotating shaft 213 is restricted by setting a positioning pin 233 in the limiting groove 232 and the fixing groove 214; the indexing plate 220 is provided with scale markings 221 at angular intervals, and the fixing frame 230 is provided with scale lines 234 corresponding to the scale markings 221.

[0031] In use, the pumped storage rotor 100 to be processed is installed on the clamping head 241. The clamping head 241's fastening structure secures the rotor 100, ensuring it does not shift during processing. Simultaneously, the base 200 provides stable support for the entire device, offering a stable foundation for subsequent operations. Observing the scale markings 221 on the indexing plate 220 and the scale lines 234 on the mounting frame 230, the position of the rotating shaft 213 is manually adjusted initially to position the rotor 100 at the starting processing angle. Then, the drive motor 211 is started, and the motor power is transmitted to the rotating shaft 213 via the commutator 212, driving the rotor 100 to rotate. When it is necessary to rotate the rotor 100 to a specific angle to process the lower groove, the target angle is determined according to the scale markings 221 on the indexing plate and the scale lines 234 on the mounting frame. As the target angle approaches, the speed of the drive motor 211 is reduced, or control is applied based on the motor's rotation to more precisely control the rotation of the rotating shaft 213, allowing the rotor 100 to gradually approach the accurate indexing position. Once the rotor 100 reaches the target indexing angle and the scale mark 221 is fully aligned with the scale line 234, the positioning pin 233 is sequentially inserted into the fixing bracket limiting groove 232 and the position fixing block fixing groove 214. The insertion of the positioning pin 233 restricts the rotational freedom of the shaft 213, thereby fixing the rotor 100 at the current indexing position and providing a stable and accurate reference for the machining of the lower slot. After machining one slot, the positioning pin 233 is removed, the drive motor 211 is restarted, and the above steps are repeated to achieve continuous indexing machining of the rotor 100 in the lower slot.

[0032] Further, please see Figure 3It also includes a receiving seat 300 spaced apart from the base 200; the receiving seat 300 includes a detachable base 310 and a rotating seat 320; the rotating seat 320 is provided with a rotation space 321 for accommodating the rotor 100, and the rotation space 321 is coaxial with the clamping head 241.

[0033] The rotary seat 320 also includes at least one pair of rotary bearings 322 disposed in the rotation space 321; the pair of rotary bearings 322 are further provided with bearing bushes 323 for supporting the rotor 100.

[0034] The top of the rotating base 320 is provided with a first limiting hole 324 communicating with the rotation space 321, and the rotation of the bearing 323 can be restricted by providing a first limiting shaft 325 extending from the first limiting hole 324 into the rotation space 321.

[0035] In use, the base 310 is fixed to the working platform. A suitable rotary seat 320 is selected according to the rotor 100 specifications and installed on the base 310. A rotary bearing 322 and a bearing bush 323 are installed in the rotation space 321 of the rotary seat 320. The rotor 100 is then placed on the bearing bush 323, aligning the rotor 100 axis with the centerline of the clamping head 241. One end of the rotor 100 is fixed by the clamping head 241 of the drive unit 210, ensuring a tight connection between the clamping head 241 and the rotor 100 axis. Simultaneously, a first limiting shaft 325 passes through the first limiting hole 324 at the top of the rotary seat 320 and is inserted into the corresponding limiting groove of the bearing bush 323, restricting the rotation of the bearing bush 323 and keeping the rotor 100 stable within the rotary seat 320.

[0036] Start the drive motor 211, which drives the rotating shaft 213 and the clamping head 241 to rotate through the commutator 212. The rotor 100 rotates synchronously with the clamping head 241. During the rotation, observe the correspondence between the scale of the indexing plate 220 and the scale line 234 of the fixing frame 230. When the target angle is reached, insert the positioning pin 233 into the limiting groove 232 of the fixing frame 230 and the fixing groove 214 of the position fixing block 231 to lock the position of the rotating shaft 213. At this time, the unloading operation of the rotor 100 wire slot can be carried out. After completion, pull out the pin 233 and repeat the rotation and positioning steps until all wire slots are unloaded.

[0037] In this embodiment, the cooperation between the receiving seat 300 and the base 200 is based on a collaborative mechanism of "coaxial positioning - dynamic support - precise limiting". The rotating seat 320 provides support for the rotor 100 through the rotating bearing 322 and the bearing bush 323, allowing the rotor 100 to rotate freely around the axis. At the same time, the high-precision fit of the bearing ensures the axial stability during rotation. The driving part 210 of the base 200 drives the rotor 100 to rotate through the clamping head 241, realizing the indexing rotation of the groove. When positioning is required, the positioning pin 233 engages with the slot of the position fixing block 231 through the fixing bracket 230, locking the rotating shaft 213 at the target angle. With the angle markings of the indexing plate 220 and the scale line 234, precise control of the groove position is achieved. The restriction of the bearing bush 323 by the first limiting shaft 325 essentially constrains the axial degree of freedom of the rotor 100, preventing the rotor 100 from shifting due to the rotation of the bearing bush 323, and ensuring the geometric accuracy of the entire system during rotation and positioning. This structure integrates mechanical support, power transmission and positioning control into one unit. Through the synergistic effect of various components, it achieves efficient and precise execution of the pumped storage rotor 100-line slot operation.

[0038] Please see Figure 3 The spaced arrangement and detachable structure of the receiving seat 300 and the base 200 enable modular assembly and precise positioning of the rotor 100 during the wire slotting operation. The coaxial design of the rotating seat 320 and the clamping head 241 ensures strict axial alignment of the rotor 100 during clamping, preventing wire slotting deviations caused by eccentricity. The detachable base 310 and rotating seat 320 facilitate the replacement of adaptable components for different rotor 100 specifications, improving equipment versatility. The rotating bearing 322 and bearing bush 323 support the weight of the rotor 100 and, through the low-friction rotation characteristics of the bearings, work in conjunction with the drive unit 210 to achieve smooth rotation of the rotor 100. The restriction of the bearing bush 323 by the first limiting shaft 325 prevents axial displacement of the rotor 100 during rotation, further ensuring positioning accuracy. Furthermore, the spaced arrangement optimizes the operating space, facilitating wire threading and fixing operations in the wire slotting, improving work efficiency.

[0039] Further, please see Figure 4 An abutment seat 400 is provided at one end of the receiving seat 300 away from the base 200; the abutment seat 400 includes a mounting seat 410 and a rotating cylinder 420 disposed on the top of the mounting seat 410; the rotating cylinder 420 is provided with an abutment shaft 421 that can rotate based on the rotating cylinder 420.

[0040] Furthermore, the abutment shaft 421 is also provided with an abutment pad 423 at one end near the receiving seat 300.

[0041] Furthermore, the abutment shaft 421 is provided with a rotating part 430 fixedly connected to the abutment shaft 421 at one end away from the receiving seat 300.

[0042] Furthermore, the top of the rotating drum 420 is provided with a second limiting hole 424 communicating with the interior of the rotating drum 420, and the rotation of the abutment shaft 421 can be restricted by providing a second limiting shaft 425 extending from the second limiting hole 424 into the interior of the rotating drum 420.

[0043] Furthermore, the rotation space 321 is arranged coaxially with the clamping head 241 and the rotating cylinder 420.

[0044] In use, the base 200 is fixed to the work platform, and the drive unit 210 and the clamping unit are in place; the receiving seat 300 is installed next to the base 200 through the detachable base 310 to ensure that the rotation space 321 and the clamping head 241 are coaxial; the mounting seat 410 of the abutment seat 400 is fixed to the end of the receiving seat 300 away from the base 200, and the abutment shaft 421 in the rotating drum 420 is aligned with the other end of the rotor 100 through the abutment pad 423. The rotating part 430 is exposed for operation. At the same time, the position of the abutment shaft 421 is fixed by the second limiting shaft 425 passing through the second limiting hole 424 to ensure that the center lines of the three are completely coincident.

[0045] One end of the rotor 100 is placed into the rotation space 321 of the receiving seat 300. The bearing 323 supports the rotor 100 through the rotating bearing 322, and the first limiting shaft 325 passes through the first limiting hole 324 to restrict the rotation of the bearing 323. The other end is clamped by the clamping head 241. The drive motor 211 drives the rotating shaft 213 to rotate through the commutator 212 to achieve the positioning of the rotor 100.

[0046] When the rotor 100 rotates, the drive unit 210 drives the rotating shaft 213 to rotate. The scale of the indexing plate 220 is aligned with the scale line 234 of the fixed frame 230 to confirm the angle. The positioning pin 233 is inserted into the fixed groove 214 and the limiting groove 232 to lock the position. The abutment shaft 421 abuts against the other end of the rotor 100 through the abutment pad 423 to provide axial support, avoid axial displacement during rotation, and ensure accurate indexing of the lower slot. The cooperation of the three has the core benefit of improved coaxial positioning accuracy. The coaxial design of the rotation space 321, the clamping head 241 and the rotating drum 420 ensures that the rotor 100 is not eccentric during clamping and rotation, avoiding the position error of the lower slot caused by axial offset. It is especially suitable for the indexing requirements of high-precision pumped storage rotors 100.

[0047] The bearing shell 323 of the receiving seat 300 and the abutment pad 423 of the abutment seat 400 form radial and axial supports at both ends of the rotor 100, reducing vibration and displacement during rotation. Combined with the indexing and locking mechanism of the drive unit 210, the positioning process is more stable and suitable for the operation of heavy rotors 100.

[0048] The base 310 of the receiving seat 300 is detachable, making it easy to adjust the installation position according to different specifications of rotors 100; the abutment shaft 421 of the abutment seat 400 can flexibly adjust the axial pressure through the rotating part 430 to adapt to rotors 100 of different lengths, improving the versatility of the equipment. The working principle of the abutment seat 400 is that the abutment seat 400 supports the rotor 100 through "axial clamping + radial limiting": the abutment pad 423 in the abutment shaft 421 acts directly on the end face of the rotor 100, and the pressure is adjusted by the axial movement of the abutment shaft 421 in the rotating drum 420, ensuring that the rotor 100 will not deviate due to axial force when rotating, and forming a bidirectional fixation with the clamping force of the drive part 210.

[0049] Furthermore, the abutment shaft 421 inside the rotating drum 420 is locked in a rotating state by the second limiting shaft 425 to prevent the rotation of the abutment shaft 421 from interfering with the positioning of the rotor 100. At the same time, the coaxial design of the rotating drum 420, the receiving seat 300, and the base 200 ensures that the abutment shaft 421 always coincides with the axis of the rotor 100, forming a stable radial support point.

[0050] The exposed design of the rotating part 430 facilitates manual or mechanical adjustment of the abutment shaft 421 to adapt to different end face sizes of the rotor 100, while the elastic or rigid material of the abutment pad 423 can buffer the impact force during operation and protect the surface of the rotor 100 from damage.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An indexing positioning device for a slot under a pumped storage rotor, characterized by, include: Base (200); The drive unit (210) is disposed on the base (200) and includes a drive motor (211) and a rotating shaft (213) that is connected to the drive motor (211) via a commutator (212). The clamping part includes a clamping head (241) that is fixedly connected to one end of the rotating shaft (213). The other end of the rotating shaft (213) is also fixedly provided with a position fixing block (231) and an indexing plate (220). The position fixing block (231) has several fixing grooves (214) spaced at an angle in the circumferential direction. The rotating shaft (213) is also provided with a fixing frame (230) at one end where the fixing block (231) is set. The fixing frame (230) is provided with a limiting groove (232) whose position is adapted to the fixing groove (214). The rotation of the rotating shaft (213) is restricted by setting a positioning pin (233) in the limiting groove (232) and the fixing groove (214). The scale plate (220) is provided with scale markings (221) at angular intervals, and the fixing frame (230) is provided with scale lines (234) corresponding to the scale markings (221).

2. A dividing head positioning device for a lower slot of a pumped storage rotor according to claim 1, wherein, It also includes a support seat (300) spaced apart from the base (200); The receiving seat (300) includes a base (310) and a rotating seat (320) that are detachably configured. The rotary table (320) is provided with a rotation space (321) for accommodating the rotor (100), and the rotation space (321) and the clamping head (241) are arranged on the same axis.

3. The indexing and positioning device for the lower slot of a pumped storage rotor according to claim 2, characterized in that, The rotary seat (320) also includes at least one pair of rotary bearings (322) disposed in the rotation space (321); The pair of rotating bearings (322) also have bearing bushes (323) for receiving the rotor (100).

4. A dividing head for a lower slot of a pumped storage rotor according to claim 3, wherein The top of the rotating base (320) is provided with a first limiting hole (324) communicating with the rotation space (321), and the rotation of the bearing (323) can be restricted by setting a first limiting shaft (325) extending from the first limiting hole (324) into the rotation space (321).

5. A dividing head positioning device for a lower slot of a pumped storage rotor according to claim 2, wherein, An abutment (400) is also provided at the end of the receiving seat (300) away from the base (200); The abutment (400) includes a mounting base (410) and a rotating cylinder (420) disposed on the top of the mounting base (410). The rotating drum (420) is provided with an abutment shaft (421) that can rotate based on the rotating drum (420).

6. A dividing head for a lower slot of a pumped storage rotor according to claim 5, wherein, The abutting shaft (421) has an abutting pad (423) at one end near the receiving seat (300).

7. A dividing head positioning device for a lower slot of a pumped storage rotor according to claim 5, wherein, The abutment shaft (421) has a rotating part (430) at one end away from the receiving seat (300) that is fixedly connected to the abutment shaft (421).

8. A dividing head positioning device for a lower slot of a pumped storage rotor according to claim 5, wherein, The top of the rotating cylinder (420) is also provided with a second limiting hole (424) communicating with the interior of the rotating cylinder (420), and the rotation of the abutment shaft (421) can be restricted by setting a second limiting shaft (425) extending from the second limiting hole (424) into the interior of the rotating cylinder (420).

9. A dividing head positioning device for a lower slot of a pumped storage rotor according to claim 5, wherein, The rotation space (321) is arranged coaxially with the clamping head (241) and the rotating cylinder (420).

Images