Automatic turning device for hydro-generator

Abstract

The invention discloses an automatic turning device for a hydro-turbine generator, which relates to the field of hydro-turbine power generation equipment. The device is driven by multiple motors to drive the reducer gearbox to work, and the gearbox and the transmission gear are meshed. The transmission gear is rotated in a circle through gear transmission, and the transmission gear is controlled by a rolling bearing to avoid radial forces that may be generated during the rotation process. At the same time, the eccentric pin transmits a force couple by contacting the rotating base plane, and the size is controlled during the processing and installation process so that two groups of pins are in contact with the plane at the same time, ensuring that the device only transmits a pure force couple during operation. The beneficial effects of the invention are as follows: the device has a simple structure, a compact layout, good rigidity, and is easy and quick to install; rolling bearings are used to support the rotation of the gears, and the transmission of other forces can be effectively avoided during the transmission process, satisfying the transmission movement of the pure force couple; the device adopts four-leg support, which has more abundant space and is convenient for on-site operation under the premise of ensuring the support strength of the entire device.

Description

Technical Field

[0001] The invention relates to the field of water turbine power generation equipment, in particular to an automatic turning device for a water turbine generator. Background Art

[0002] Before starting a hydro-turbine generator, it is usually necessary to turn the gear to adjust the center of the shaft system. The existing turning gear device has the defects of complex structure and inconvenient installation. At the same time, it is easy to transmit other forces (such as axial force) in the process of driving the hydro-turbine generator to rotate, which will affect the operation of the equipment, making it impossible to accurately and effectively adjust the shaft system of the hydro-turbine generator. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an automatic turning device for a hydro-generator, which has the characteristics of simple structure, convenient installation and ensuring that the device only transmits pure force couple during operation.

[0004] The objective of the present invention is achieved through the following technical solutions: the automatic winching device of the hydro-turbine generator mainly comprises a mounting bracket, a gear box, a motor, a transmission gear, a rolling bearing and a transmission assembly; a plurality of mounting brackets are evenly distributed along the circumference on the upper frame of the generator, a gear box mounting position is arranged on each mounting bracket, and a gear box is installed on at least two gear box mounting positions, each gear box is driven by a motor with a reducer installed above it, an active helical gear and an anti-backlash gear are arranged in the gear box, the active helical gear is meshed with the transmission gear arranged on the outer ring of the rolling bearing, and drives the transmission gear to rotate in a circle, and the inner ring of the rolling bearing is fixedly connected to the mounting bracket; one end of the transmission assembly is fixed on the transmission gear, and the other end is fixed on the rotating base on the upper end shaft of the generator through an eccentric pin, and the transmission of the force couple is realized through the planar contact between the eccentric pin and the rotating base.

[0005] Furthermore, the transmission components are arranged in pairs, each transmission component is fixed on the transmission gear through a transmission plate seat, the transmission plate seat is connected and fixed to the driven seat of the transmission component through a transmission plate, and the driven seat directly transmits a force couple to the rotating base through an eccentric pin.

[0006] Furthermore, an adjustment gasket is provided between the anti-backlash gear and the active bevel gear to adjust the gap between the gear box and the transmission gear, thereby ensuring the synchronization of the transmission of multiple motors.

[0007] Preferably, a protective cover is installed outside the transmission gear.

[0008] Preferably, rubber pads for shock absorption are provided at the installation positions of the reducer and the gear box.

[0009] The beneficial effects of the present invention are:

[0010] 1. The equipment has a simple structure, compact layout, good rigidity, and is easy and quick to install;

[0011] 2. Use rolling bearings to support gear rotation, which can effectively avoid the transmission of other forces during the transmission process and meet the transmission motion of pure force couple;

[0012] 3. The equipment adopts four-leg support, which provides more space and is convenient for on-site operation while ensuring the supporting strength of the entire equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention.

[0014] Figure 2 for Figure 1 Structural cross-section view.

[0015] Figure 3 for Figure 1 Top view of the structure.

[0016] Figure 4 It is a schematic diagram of the structure of the transmission component.

[0017] Explanation of the accompanying drawings: generator upper frame 1, mounting bracket 2, gear box mounting position 3, gear box 4, motor 5, reducer 6, transmission gear 7, rolling bearing 8, transmission assembly 9, eccentric pin 9-1, transmission plate seat 9-2, transmission plate 9-3, driven seat 9-4, generator upper shaft 10, rotating base 11, protective cover 12, driving bevel gear 13, anti-backlash gear 14, adjusting gasket 15, generator slip ring 16, rubber pad 17. DETAILED DESCRIPTION

[0018] The present invention will be described in detail below with reference to the accompanying drawings:

[0019] Embodiment: As shown in the attached drawings, this automatic turning device of the hydro-turbine generator mainly comprises a mounting bracket 2, a gear box 4, a motor 5, a transmission gear 7, a rolling bearing 8 and a transmission assembly 9; a plurality of mounting brackets 2 are evenly distributed along the circumference on the upper frame 1 of the generator, a gear box mounting position 3 is arranged on each mounting bracket 2, and a gear box 4 is installed on at least two gear box mounting positions 3, each gear box 4 is driven by a motor 5 with a reducer 6 installed above it, and a driving bevel gear 13 and an anti-backlash gear 14 are arranged in the gear box 4, and the driving bevel gear 13 is meshed with the transmission gear 7 arranged on the outer ring of the rolling bearing 8, and drives the transmission gear 7 to rotate in a circle, and the inner ring of the rolling bearing 8 is fixedly connected to the mounting bracket 2; one end of the transmission assembly 9 is fixed The transmission components 9 are arranged in pairs, each transmission component 9 is fixed on the transmission gear 7 through a transmission plate seat 9-2, and the transmission plate seat 9-2 is connected and fixed to the driven seat 9-4 of the transmission component 9 through a transmission plate 9-3, and the driven seat 9-4 directly transmits the couple to the rotating base 11 through the eccentric pin 9-1; an adjusting gasket 15 is arranged between the anti-backlash gear 14 and the active bevel gear 13 to adjust the gap between the gear box 4 and the transmission gear 7 to ensure the synchronization of the transmission of the two motors 5.

[0020] Preferably, a protective cover 12 is installed outside the transmission gear 7.

[0021] Preferably, a rubber pad 17 for shock absorption is provided at the installation position of the reducer 6 and the gear box 4 .

[0022] Working principle of the present invention: The device is driven by multiple motors 5 (taking dual motor drive as an example, as shown in the attached figure). Figure 1 As shown in the figure, the two motors 5 are decelerated by the reducer 6 and drive the two gear boxes 4 to work respectively. Since the active bevel gear 13 and the transmission gear 7 in the gear box 4 are meshed, the circumferential rotation of the transmission gear 7 is realized through gear transmission. At the same time, the rolling bearing 8 is used to control the transmission gear 7 to avoid radial force that may be generated during the rotation process. The gap between the gear box 4 and the transmission gear 7 is changed by adjusting the adjustment gasket 15 set between the anti-backlash gear 14 and the active bevel gear 13, thereby ensuring the synchronization of the transmission of the two motors 5; an eccentric pin 9-1 is set on the symmetrically arranged transmission component 9, and the eccentric pin 9-1 transmits a torque by contacting the rotating base 11 plane. During the processing and installation process, the eccentric pin 9-1 controls the processing and installation dimensions so that the two groups of pins are in contact with the plane at the same time, ensuring that the equipment only transmits pure torque during operation.

[0023] It is understandable that, for those skilled in the art, any equivalent replacement or change to the technical solution and inventive concept of the present invention should fall within the protection scope of the claims attached to the present invention.

Claims

1. An automatic turning device for a hydro-generator, characterized in that: The invention mainly comprises a mounting frame (2), a gear box (4), a motor (5), a transmission gear (7), a rolling bearing (8) and a transmission assembly (9); a plurality of mounting frames (2) are evenly distributed along the circumference of the generator upper frame (1); a gear box mounting position (3) is arranged on each mounting frame (2); at least two gear box mounting positions (3) are equipped with gear boxes (4); each gear box (4) is driven by a motor (5) with a reducer (6) installed above the motor; an active helical gear (1) is arranged in the gear box (4); 3) and a backlash-eliminating gear (14), the driving bevel gear (13) meshes with a transmission gear (7) arranged on the outer ring of a rolling bearing (8) and drives the transmission gear (7) to rotate in a circle, and the inner ring of the rolling bearing (8) is fixedly connected to the mounting bracket (2); one end of the transmission assembly (9) is fixed to the transmission gear (7), and the other end is fixed to a rotating base (11) on the upper shaft (10) of the generator through an eccentric pin (9-1), and the transmission of the force couple is realized through the plane contact between the eccentric pin (9-1) and the rotating base (11).

2. The automatic turning device of the hydro-generator according to claim 1 is characterized in that: The transmission components (9) are arranged in pairs, each transmission component (9) is fixed on the transmission gear (7) via a transmission plate seat (9-2), the transmission plate seat (9-2) is connected and fixed to a driven seat (9-4) of the transmission component (9) via a transmission plate (9-3), and the driven seat (9-4) directly transmits a force couple to the rotating base (11) via an eccentric pin (9-1).

3. The automatic turning device of the hydro-generator according to claim 1 is characterized in that: An adjusting gasket (15) is arranged between the anti-backlash gear (14) and the driving bevel gear (13) to adjust the gap between the gear box (4) and the transmission gear (7) to ensure the synchronization of the transmission of the multiple motors (5).

4. The automatic turning device of the hydro-generator according to claim 1 is characterized in that: A protective cover (12) is installed outside the transmission gear (7).

5. The automatic turning device of the hydro-generator according to claim 1 is characterized in that: A rubber pad (17) for shock absorption is provided at the installation position of the reducer (6) and the gear box (4).

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