Rotary milling equipment for water turbine seat ring

Abstract

The utility model discloses rotary milling equipment for a water turbine seat ring, which belongs to the technical field of milling equipment, solves the problem of low repair accuracy of water turbine seat ring machining and polishing equipment in the prior art, and comprises a supporting seat, the top of the supporting seat is connected with a supporting frame, and the top of the supporting frame is connected with a rotating shaft. A swing mechanism is installed on the supporting frame, a connecting base is connected to the top of the swing mechanism, a tool rest assembly is connected to the top of the connecting base and comprises a tool apron, the tool apron is connected with a ram arranged in the horizontal direction, a feeding mechanism is installed on the ram, and the feeding mechanism is connected with a sliding plate. The sliding plate is connected with the ram in a sliding mode, and the sliding plate is connected with a power milling head. The device is used for accurately milling and repairing the water turbine seat ring, and is high in flexibility and accuracy.

Description

Technical Field

[0001] The utility model belongs to the technical field of milling processing equipment, and in particular relates to a rotary milling processing equipment for a water turbine seat ring. Background Art

[0002] The turbine seat ring is a key component in the water guide mechanism of a hydropower station. It is the installation foundation of the entire water guide mechanism. The seat ring is pre-buried in the foundation when the hydropower station is built. After a repair cycle, the installation surface of the seat ring is washed by water, and cavitation and pits will appear on its surface. In this case, it needs to be repaired during the overhaul of the water guide mechanism. Since it is pre-buried in the foundation, it can only be repaired on-site by manually polishing the defects after welding. The repair effect is poor and the time is long. When installing the water guide mechanism, the repaired seat ring needs to adjust its verticality with the turbine axis by adding or removing gaskets, which has the problems of difficulty, long time and poor operability during installation.

[0003] The rotary milling equipment for turbine seat ring is mainly used for milling or turning of the seat ring of the water guide mechanism of the hydropower station after on-site welding repair, to ensure the verticality between the seat ring plane and the turbine axis. The processing and grinding equipment in the existing technology is large in size and lacks operating stability, and cannot guarantee the accuracy of grinding and repair. Utility Model Content

[0004] The purpose of the utility model is to:

[0005] In order to solve the problem of low repair accuracy of turbine seat ring processing and grinding equipment in the prior art, a turbine seat ring rotary milling processing equipment is provided.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A turbine seat ring rotary milling processing equipment comprises a support seat, the top of the support seat is connected to a support frame, a rotary mechanism is installed on the support frame, the top of the rotary mechanism is connected to a connecting seat, the top of the connecting seat is connected to a tool holder assembly, the tool holder assembly comprises a tool seat, the tool seat is connected to a ram arranged in a horizontal direction, a feed mechanism is installed on the ram, the feed mechanism is connected to a slide plate, the slide plate is slidably connected to the ram, and the slide plate is connected to a power milling head.

[0008] Furthermore, the slewing mechanism comprises a base connected to the support frame, a cover plate is connected to the base, a slewing transmission mechanism is installed inside the base, and the slewing transmission mechanism is connected to a slewing servo drive motor.

[0009] Furthermore, the rotary transmission mechanism includes a reducer connected to the rotary servo drive motor, the reducer is connected to a worm gear, and the worm gear is connected to the rotary mechanism.

[0010] Furthermore, one end of the slide away from the power milling head is slidably connected to a counterweight box, the counterweight box is connected to an adjusting device, the adjusting device includes a screw threadedly connected to the counterweight box, and the screw is connected to an adjusting handwheel.

[0011] Furthermore, the feeding mechanism comprises a feeding drive variable frequency motor, and a feeding drive rod is connected between the feeding drive variable frequency motor and the slide plate.

[0012] Furthermore, the connecting seat and the tool holder assembly are connected via a key, and an electric control box is installed inside the support frame.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0014] The utility model assembles a feeding mechanism that can be moved in the horizontal direction, a slide plate and a power milling head that can be moved in the vertical direction together to form a sliding seat that can accurately and stably perform longitudinal and transverse cross displacements, thereby driving the corresponding grinding and repair of the grinding head on the power milling head. The utility model has the characteristics of compact structure, small size and stable operation, thus being convenient for movement and storage, and has high accuracy in grinding and repairing the turbine seat ring, convenient and efficient operation, and is reliable and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural diagram of the installation of the device of the utility model in the turbine runner chamber;

[0016] Figure 2 for Figure 1 A top view of

[0017] Figure 3 This is a device structure diagram of the utility model.

[0018] Markings in the figure: 1-support frame, 2-rotating mechanism, 3-tool holder, 4-slide, 5-feed mechanism, 6-key, 7-tool holder assembly, 8-connecting seat, 9-slide plate, 10-power milling head, 11-electric control box, 12-support seat, 13-base, 14-cover plate, 15-counterweight box, 16-adjusting device, 17-feed drive frequency conversion motor, 18-feed drive rod. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0020] A rotary milling processing equipment for a turbine seat ring includes a support seat 12, a support frame 1 is connected to the top of the support seat 12, a rotary mechanism 2 is installed on the support frame 1, a connecting seat 8 is connected to the top of the rotary mechanism 2, a tool holder assembly 7 is connected to the top of the connecting seat 8, and the tool holder assembly 7 includes a tool seat 3, the tool seat 3 is connected to a ram 4 arranged in a horizontal direction, a feed mechanism 5 is installed on the ram 4, the feed mechanism 5 is connected to a slide plate 9, the slide plate 9 is slidably connected to the ram 4, and the slide plate 9 is connected to a power milling head 10. The connecting seat 8 is a welded structural part, and its height can be determined according to the height of the on-site processing part, and it has strong adaptability to on-site processing of different heights. The support frame 1 is also a welded structural part, and its connection with the support seat 12 adopts a modular design. The length of the support frame 1 is changed according to different on-site requirements to adapt to different on-site installation environments.

[0021] The slewing mechanism 2 includes a base 13 connected to the support frame 1 , a cover plate 14 is connected to the base 13 , a slewing transmission mechanism is installed inside the base 13 , and a slewing servo drive motor is connected to the slewing transmission mechanism.

[0022] The rotary transmission mechanism includes a reducer connected to the rotary servo drive motor, the reducer is connected to a worm gear, and the worm gear is connected to the rotary mechanism 2.

[0023] The function of the rotary mechanism 2 is to provide the power for the equipment to rotate. The rotary transmission mechanism uses a servo motor to drive the reducer, and the reducer transmits the torque to the worm gear. It is characterized by large torque, slow and adjustable speed, and can adapt to the rotation speed required by different processing methods.

[0024] A counterweight box 15 is slidably connected to one end of the ram 4 away from the power milling head 10, and the counterweight box 15 is connected to an adjusting device 16. The adjusting device 16 includes a screw threadedly connected to the counterweight box 15, and the screw is connected to an adjusting handwheel.

[0025] The feeding mechanism 5 includes a feeding drive variable frequency motor 17 , and a feeding drive rod 18 is connected between the feeding drive variable frequency motor 17 and the slide plate 9 .

[0026] The connecting seat 8 is connected to the tool holder assembly 7 via a key 6 , and an electric control box 11 is installed inside the support frame 1 .

[0027] Regarding the electrical control part of this equipment, it can be implemented as follows:

[0028] (1) Control system composition:

[0029] The control system mainly comprises: a centralized control console, a rotary servo drive motor, a feed drive variable frequency motor 17, a milling head rotation variable frequency motor, a limit stroke position travel switch, a wireless operation module, and a wireless handheld operator.

[0030] (2) Detailed description of control principle:

[0031] The control system integrates control, operation, signal feedback, automatic fault diagnosis, fault alarm and status monitoring, all of which are integrated into the centralized control console.

[0032] The centralized control console uses Siemens PLC as the core of signal acquisition and instruction execution, and drives the rotary servo drive motor, feed drive variable frequency motor 17, and milling head rotation variable frequency motor respectively. The servo motor is controlled by the touch screen to give a pulse frequency, accurately adjust the speed of the rotary servo drive motor, so that it runs at the speed specified by the user, and the speed is fed back to the touch screen of the centralized control console in real time through the encoder, which is convenient for users to master. Similar control is also applied to the feed and milling head variable frequency motors, the difference is that the given signal is frequency.

[0033] The overall control system also has complete monitoring of the operation of each motor. When abnormal conditions such as overload, overheating, overtravel, etc. occur, the system automatically stops, outputs an alarm signal, and indicates the fault point to facilitate maintenance personnel to troubleshoot.

[0034] The control system can introduce an industrial-grade wireless manual control unit, which makes workpiece clamping, tool setting and workpiece alignment more convenient and is not affected by cable constraints. It is suitable for various special occasions and occasions where wiring is inconvenient, and is highly practical.

[0035] The horizontal feeding mechanism 5 fixed on the base 13 of the utility model can adopt the KK86D10C-540A1-F0C precision single-axis robot system, and the vertical driving mechanism of the power milling head 10 can adopt the KK60D5C-150A1-H0C precision single-axis robot system, which has high-precision verticality in two directions and high parallelism in walking, further enhancing the stability of the utility model in operation.

[0036] The vertical drive mechanism of the power milling head 10 of the utility model can adopt the KK60D5C-150A1-H0C precision-grade single-axis robot system to drive its movement with a handwheel. It has high flexibility and precision, and can effectively ensure the reliable correspondence between the grinding wheel mechanism and the generator collector ring, thereby ensuring the quality of grinding and repair, and has high reliability.

[0037] The grinding head structure on the power milling head 10 of the utility model can adopt a hydrostatic bearing and a hydrostatic thrust bearing, and the driving motor is placed at the rear to form an integral body. The high motion accuracy of the grinding wheel mechanism can not only form a stable and reliable grinding and repair of the generator collector ring, but also can effectively collect the waste chips and impurities in the grinding process through the protective cover, thereby reducing the pollution to the environment and reducing the impact on the operational stability of the utility model (for example, avoiding the impact of waste chips and impurities on the precision matching parts of the utility model).

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A turbine seat ring rotary milling processing equipment, characterized in that: The invention comprises a support seat (12), the top of the support seat (12) is connected to a support frame (1), a slewing mechanism (2) is installed on the support frame (1), the top of the slewing mechanism (2) is connected to a connecting seat (8), the top of the connecting seat (8) is connected to a tool holder assembly (7), the tool holder assembly (7) comprises a tool seat (3), the tool seat (3) is connected to a ram (4) arranged in a horizontal direction, the ram (4) is installed with a feeding mechanism (5), the feeding mechanism (5) is connected to a slide plate (9), the slide plate (9) is slidably connected to the ram (4), and the slide plate (9) is connected to a power milling head (10).

2. The turbine seat ring rotary milling processing equipment according to claim 1 is characterized in that: The slewing mechanism (2) comprises a base (13) connected to the support frame (1), a cover plate (14) being connected to the base (13), a slewing transmission mechanism being installed inside the base (13), and a slewing transmission mechanism being connected to a slewing servo drive motor.

3. The turbine seat ring rotary milling processing equipment according to claim 2 is characterized in that: The rotary transmission mechanism comprises a reducer connected to the rotary servo drive motor, the reducer is connected to a worm gear, and the worm gear is connected to the rotary mechanism (2).

4. The turbine seat ring rotary milling processing equipment according to claim 1, characterized in that: A counterweight box (15) is slidably connected to one end of the ram (4) away from the power milling head (10), and the counterweight box (15) is connected to an adjustment device (16). The adjustment device (16) includes a screw threadedly connected to the counterweight box (15), and the screw is connected to an adjustment handwheel.

5. The turbine seat ring rotary milling processing equipment according to claim 1, characterized in that: The feeding mechanism (5) comprises a feeding drive variable frequency motor (17), and a feeding drive rod (18) is connected between the feeding drive variable frequency motor (17) and the slide plate (9).

6. The turbine seat ring rotary milling processing equipment according to claim 1, characterized in that: The connecting seat (8) and the tool holder assembly (7) are connected via a key (6), and an electric control box (11) is installed inside the support frame (1).

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