An automatic lightening slotting wedge device and slotting wedge method

Abstract

The application discloses a kind of automatic lightening slotting wedge device and slotting wedge method, the device includes electric drive control host, fixed false wedge, magnetic attraction fixed seat, false wedge guard plate and hammering arm, electric drive control host right side is connected with fixed false wedge by support arm, and fixed false wedge bottom is connected with false wedge guard plate;Electric drive control host left side is connected with magnetic attraction fixed seat by support arm, and magnetic attraction fixed seat is used for being magnetically adsorbed on stator iron core, motor is arranged in electric drive control host, motor is driven connection with hammering arm, and electric drive control host is equipped with power plug and controller.The application realizes mechanical automation slotting wedge, greatly reduces the labor intensity of operator when water-turbine generator unit is overhauled and installed, improves slotting wedge installation efficiency and installation quality, and small in size, simple structure, easy to install and use.

Description

Technical Field

[0001] This invention belongs to the field of generator set maintenance and installation technology, and specifically relates to an automatic and lightweight slotting wedge device and a slotting wedge method. Background Technology

[0002] As the heart of a hydropower station, the quality and efficiency of the installation, inspection, and maintenance of the turbine generator directly impacts the station's safe operation and production efficiency. Stator slot wedge assembly is one of the key processes in turbine generator installation and maintenance. Stator slot wedges are generally wedge-shaped structures, primarily used to secure the stator bars and prevent deformation and displacement. Each turbine generator requires 5,000 to 15,000 stator slot wedges, with high process standards. The contact area per unit area must reach 3 / 4 or more, the noise level must not exceed 1 / 10 of the total wedge length, and both ends must be tightly wedged. If the slot wedges are installed too loosely, they will not effectively secure the stator bars, leading to bar vibration, potential damage to the bar insulation, and compromised unit operating safety.

[0003] Currently, the installation of slot wedges is done manually using hammers, a process commonly known as "driving wedges." It takes 15-20 people working simultaneously for over 7 days to complete the slot wedge installation or maintenance of a large unit. This process consumes a significant amount of manpower and resources, and the installation quality is limited by the skill level of the personnel, making it difficult to guarantee sufficient quality. Furthermore, manual labor can easily damage the core and conductor bars. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an automatic and lightweight slot wedge-driving device and method to solve the technical problems of time-consuming, labor-intensive, and low-precision installation of generator stator slot wedges. This device uses a fixed dummy wedge and a strong magnetic fixing seat to fix the electric drive control host directly above the slot wedge to be installed. The electric drive control host drives the hammer arm to move up and down to hammer the slot wedge, thereby driving the slot wedge into the slot.

[0005] In a first aspect, the present invention provides an automatic and lightweight grooving wedge device, comprising an electric drive control unit, a fixed dummy wedge, a magnetic fixing base, a dummy wedge protective plate, and a hammer arm. The right side of the electric drive control unit is connected to the fixed dummy wedge via a support arm, and the bottom of the fixed dummy wedge is connected to the dummy wedge protective plate. The left side of the electric drive control unit is connected to the magnetic fixing base via a support arm. The magnetic fixing base is used to magnetically attach to the stator core. The electric drive control unit contains a motor, which is driven by the hammer arm. The electric drive control unit has a power plug and a controller, and the controller is used to control the start and stop of the motor inside the electric drive control unit.

[0006] Preferably, the electric drive control host includes a housing, a fixing plate is disposed inside the housing, the motor is mounted on the fixing plate, a drive disk is also mounted on the fixing plate, the motor and the drive disk are drivenly connected by a bevel gear, a return spring is connected to the bottom of the hammer arm, and the other end of the return spring is fixedly connected to the fixing plate; at least one drive column is disposed on the drive disk, and after the drive disk rotates, the drive column presses against the end of the hammer arm.

[0007] A second aspect of the present invention provides an automated and lightweight grooving wedge method, using the aforementioned automated and lightweight grooving wedge device, specifically comprising the following steps: S1 inserts the wedge to be installed into the wedge groove; S2 installs the automatic and lightweight grooving wedge device directly above the grooving wedge to be installed, and fixes the fixed dummy wedge in the grooving groove where the wire bar has been installed but the grooving wedge has not been installed, through the dummy wedge protective plate and bolts; S3 attaches the magnetic mounting base to the stator core; S4 starts the electric drive control host through the controller, so that the electric drive control host drives the hammer arm to strike the slot wedge to be installed; Once the S5 wedge to be installed reaches the predetermined position, the control electric drive host can stop working.

[0008] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides an automatic and lightweight grooving wedge device that is small in size, simple in structure, and easy to install and use.

[0009] The present invention provides an automatic and lightweight slotting wedge device and method, which realizes mechanical slotting wedges. During the maintenance and installation of hydro turbine generator sets, it greatly reduces the labor intensity of operators, improves the efficiency and quality of slotting wedge installation, and has a high degree of automation. Attached Figure Description

[0010] Figure 1 This is a three-dimensional structural diagram of an automatic and lightweight grooving wedge device provided in one embodiment of the present invention.

[0011] Figure 2 This is a top view schematic diagram of an automatic and lightweight grooving wedge device provided in one embodiment of the present invention.

[0012] Figure 3 A three-dimensional structural diagram of an electrically driven control host in one embodiment of the invention.

[0013] Figure 4 A top view of the structure of an electrically driven control host in one embodiment of the invention.

[0014] In the above attached figures: 1. Electric drive control host; 2. Fixed dummy wedge; 3. Magnetic fixing base; 4. dummy wedge protective plate; 5. Hammer arm; 6. Controller; 7. Power plug; 8. Motor; 9. Housing; 10. Fixing plate; 11. Drive plate; 12. Return spring; 13. Drive column. Detailed Implementation

[0015] 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.

[0016] See Figure 1 and Figure 2 As a preferred embodiment of the present invention, this embodiment provides an automatic and lightweight slotting wedge device, including an electric drive control host 1, a fixed dummy wedge 2, a magnetic fixing seat 3, a dummy wedge protective plate 4, and a hammering arm 5. The right side of the electric drive control host 1 is connected to the fixed dummy wedge 2 via a support arm. In order to prevent the fixed dummy wedge 2 from damaging the wire rod, the bottom of the fixed dummy wedge 2 is connected to the dummy wedge protective plate 4. The left side of the electric drive control host 1 is connected to the magnetic fixing seat 3 via a support arm. The magnetic fixing seat 3 is used to magnetically attach to the stator core. The electric drive control host 1 is equipped with a motor 8, which is driven by the hammering arm 5. The electric drive control host 1 is equipped with a power plug 7 and a controller 6. The controller 6 is used to control the start and stop of the motor 8 inside the electric drive control host 1.

[0017] Specifically, in the above embodiments, such as Figure 3 and Figure 4 As shown, the electric drive control host 1 includes a housing 9, a fixing plate 10 is provided inside the housing 9, a motor 8 is mounted on the fixing plate 10, and a drive disk 11 is also mounted on the fixing plate 10. The motor 8 and the drive disk 11 are connected by a bevel gear. A return spring 12 is connected to the bottom of the hammer arm 5, and the other end of the return spring 12 is fixedly connected to the fixing plate 10. Two drive columns 13 are symmetrically arranged on the drive disk 11. After the drive disk 11 rotates, the drive columns 13 press against the end of the hammer arm 5, causing the hammer arm 5 to reciprocate.

[0018] In use, that is, an automated and lightweight grooving wedge method, using the aforementioned automated and lightweight grooving wedge device, specifically includes the following steps: S1 inserts the wedge to be installed into the wedge groove; S2 installs the automatic lightweight grooving wedge device directly above the grooving wedge to be installed, and fixes the fixed dummy wedge 2 in the grooving groove where the wire bar has been installed but the grooving wedge has not been installed, through the dummy wedge protective plate 4 and bolts; S3 attaches the magnetic fixing seat 3 to the stator core; S4 starts the electric drive control host 1 through the controller, so that the electric drive control host 1 drives the hammer arm 5 to strike the slot wedge to be installed. Once the S5 wedge to be installed reaches the predetermined position, the control electric drive host 1 can be stopped.

[0019] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An automatic and lightweight grooving wedge device, characterized in that, The device includes an electric drive control host (1), a fixed dummy wedge (2), a magnetic fixing seat (3), a dummy wedge protective plate (4), and a hammer arm (5). The right side of the electric drive control host (1) is connected to the fixed dummy wedge (2) via a support arm, and the bottom of the fixed dummy wedge (2) is connected to the dummy wedge protective plate (4). The left side of the electric drive control host (1) is connected to the magnetic fixing seat (3) via a support arm. The magnetic fixing seat (3) is used to magnetically attach to the stator core. The electric drive control host (1) is equipped with a motor (8), which is driven by the hammer arm (5). The electric drive control host (1) is equipped with a power plug (7) and a controller (6). The controller (6) is used to control the start and stop of the motor (8) inside the electric drive control host (1). The electric drive control host (1) includes a housing (9), a fixing plate (10) is provided inside the housing (9), the motor (8) is mounted on the fixing plate (10), and a drive disk (11) is also mounted on the fixing plate (10). The motor (8) and the drive disk (11) are connected by a bevel gear drive. The bottom of the hammer arm (5) is connected to a return spring (12), and the other end of the return spring (12) is fixedly connected to the fixing plate (10). At least one drive column (13) is provided on the drive disk (11). After the drive disk (11) rotates, the drive column (13) presses against the end of the hammer arm (5).

2. An automated and lightweight method for creating grooved wedges, characterized in that, The automatic and lightweight grooving wedge device according to claim 1 specifically includes the following steps: S1 inserts the wedge to be installed into the wedge groove; S2 installs the automatic lightweight grooving wedge device directly above the grooving wedge to be installed, and fixes the fixed dummy wedge (2) in the groove of the wire bar that has been installed but not grooving wedge installed by means of the dummy wedge protective plate (4) and bolts; S3 attracts the magnetic fixing seat (3) to the stator core; S4 starts the electric drive control host (1) through the controller, so that the electric drive control host (1) drives the hammer arm (5) to strike the slot wedge to be installed; Once the S5 wedge to be installed reaches the predetermined position, the control electric drive host (1) can be stopped.

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