Special tool for mounting guide vane connecting rod bearing of bulb tubular unit

Abstract

The utility model provides a special tool for installing a guide vane connecting rod bearing of a bulb tubular unit, which relates to the technical field of generators, and comprises a steel pipe contacted with a bearing, the top of the steel pipe is provided with a steel plate, the steel plate is provided with a through hole and a screw rod, and the screw rod penetrates through the through hole of the steel plate and extends towards the steel pipe; the lead screw is further sleeved with a pressing piece, and the pressing piece can move downwards along the lead screw, press the steel plate and push the steel pipe to act on the bearing.

Description

Technical Field

[0001] This utility model relates to the technical field of generators, and more specifically, to a special tool for installing the guide vane connecting rod bearing of a bulb-type turbine generator set. Background Technology

[0002] A bulb turbine generator is a type of hydroelectric generator in which the generator and bearings are housed within a sealed casing resembling a light bulb. The bulb turbine generator is connected to the turbine shaft and positioned within the flow channel. Its characteristics include a compact and complex structure, and special requirements for moisture and leakage prevention. Because the bulb turbine generator is installed in the underwater flow channel, the windings are susceptible to moisture when the generator is stopped; therefore, its rated voltage is lower than that of a conventional hydroelectric generator.

[0003] The installation process of guide vane connecting rod bearings in the existing technology is relatively time-consuming and requires a high level of force. Excessive force or uneven force can lead to bearing damage or improper installation. Improper bearing installation will cause equipment failure and performance loss. Utility Model Content

[0004] The purpose of this utility model is to provide a special tool for installing guide vane connecting rod bearings in bulb-type turbine units, so as to achieve the technical effect of facilitating more convenient and precise bearing installation, making the bearing force more uniform during the installation process, and improving installation efficiency.

[0005] This utility model is achieved through the following technical solution: it includes a steel pipe that contacts the top of the bearing, a steel plate is provided on the top of the steel pipe, a through hole is provided on the steel plate, and a lead screw is also provided, the lead screw passes through the through hole of the steel plate and is partially placed inside the steel pipe;

[0006] A clamping member is also fitted on the lead screw. The clamping member can move downward along the lead screw and clamp the steel plate, pushing the steel pipe to act on the bearing.

[0007] To better realize this utility model, the clamping member further includes a rotating nut that can be sleeved on the outside of the lead screw, the internal thread of the rotating nut engaging with the thread of the lead screw, and the bottom of the rotating nut also having an outwardly extending rotating disk, the rotating disk also having a rack, and a rotating member connected through the rack.

[0008] To better realize this utility model, the rotating component further includes an upper sleeve and a lower sleeve integrally formed with the upper sleeve. The upper sleeve is disposed above the lower sleeve. Both the upper sleeve and the lower sleeve are hollow structures. The upper sleeve is sleeved on the outside of the rotating nut. The hollow inner wall of the lower sleeve is provided with serrations that match the rack. The lower sleeve is sleeved on the outside of the rotating disk.

[0009] To better realize this utility model, the rotating nut is a hexagonal nut, and a rotating handle is also provided on the top of the upper sleeve.

[0010] To better realize this utility model, the rotating component further includes a rotating gear meshing with the rack, the diameter of the rotating gear being half the diameter of the rotating disk, and a mounting bracket is also provided on the steel plate, on which a drive motor is mounted, and the rotating gear is sleeved on the output shaft of the drive motor.

[0011] To better realize this utility model, the steel plate is further provided with an embedded circular groove on the side facing the steel pipe, and the top of the steel pipe is placed in the embedded circular groove.

[0012] To better realize this utility model, the steel pipe further includes a first arc-shaped pipe and a second arc-shaped pipe. A first connecting ear is provided outward from the middle of the first arc-shaped pipe, and a second connecting ear is provided outward from the middle of the second arc-shaped pipe. The first connecting ear and the second connecting ear are arranged opposite to each other. A fastener is also provided, which passes through the first connecting ear and the second connecting ear.

[0013] The beneficial effects of this utility model are:

[0014] This utility model, by setting up steel pipes, steel plates, clamping parts, and rotating parts, can better control the applied force with the cooperation of the rotating parts and clamping parts, making the force more uniform during the installation of bearings, the installation process more stable, the installation efficiency higher, and the installation results better. The device has a simple structure and is easy to operate. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in this utility model will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This utility model provides a structural schematic diagram of a special tool for installing guide vane connecting rod bearings in a bulb-type turbine unit. Figure 1 ;

[0017] Figure 2 This utility model provides a structural schematic diagram of a special tool for installing guide vane connecting rod bearings in a bulb-type turbine unit. Figure 2 ;

[0018] Figure 3 A schematic diagram of the steel pipe provided by this utility model;

[0019] icon:

[0020] 100-Steel pipe, 110-First arc-shaped pipe, 111-First connecting ear, 120-Second arc-shaped pipe, 121-Second connecting ear, 200-Steel plate, 300-Screw rod, 400-Clamping part, 410-Rotating nut, 420-Rotating disk, 500-Rotating part, 510-Upper sleeve, 520-Lower sleeve, 530-Handle, 540-Rotating gear, 550-Mounting bracket, 560-Drive motor. Detailed Implementation

[0021] The technical solution of this utility model will now be described with reference to the accompanying drawings.

[0022] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this utility model, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] Please refer to Figures 1-3 This utility model provides a special tool for installing guide vane connecting rod bearings in bulb-type turbine units. In existing technology, when assembling bulb-type turbine units, the movable guide vane needs to be installed on a seat ring. This seat ring has holes and is connected to the guide vane connecting rod via bearings, allowing the guide vane to move. Bearing installation is often time-consuming and labor-intensive. During installation, it is difficult to control the force, and uneven force can easily damage the bearing. Improper installation can also cause equipment malfunctions during operation. To solve these technical problems, this utility model provides a special tool for installing guide vane connecting rod bearings, facilitating the installation of bearings within the seat ring of the bulb-type turbine unit. This results in more even force distribution during bearing installation, improving installation efficiency, reducing improper installation, and extending equipment lifespan.

[0024] As shown in the figure, the main components include a steel pipe 100 that contacts the bearing. The bottom of the steel pipe 100 can be positioned above the bearing, and a steel plate 200 is installed on the top of the steel pipe 100 with a through hole. A lead screw 300 passes through the through hole, with part of the lead screw 300 placed inside the steel pipe 100. A clamping member 400 is also provided, which is threaded onto the outside of the lead screw 300. The clamping member 400 can rotate along the thread direction of the lead screw 300, thus allowing it to move upward or downward. When the clamping member 400 moves downward, it can push the steel plate 200 and the steel pipe 100 below to move downward simultaneously. During the movement, the force is transmitted to the bearing, thereby achieving pressure on the bearing and thus installing the bearing.

[0025] The clamping component 400 includes a rotating nut 410 sleeved on the lead screw 300. The rotating nut 410 is a hexagonal nut, which is threaded to the lead screw 300. A rotating disk 420 is also provided at the bottom of the rotating nut 410. A rack (not shown in the figure) is provided on the outer periphery of the rotating disk 420, and the rotating component 500 is connected through the rack.

[0026] One of the structures of the rotating component 500 is as follows: The rotating component 500 includes an upper sleeve 510 and a lower sleeve 520 integrally formed with the bottom of the upper sleeve 510. The upper sleeve 510 is positioned above the lower sleeve 520, and both the upper sleeve 510 and the lower sleeve 520 are hollow structures. The cavity of the upper sleeve 510 is hexagonal, and the cavity of the lower sleeve 520 is circular. The inner wall of the circular cavity is provided with serrations that match the rack (not shown in the figure). As shown in the figure, the cavity of the upper sleeve 510 is smaller than the cavity of the lower sleeve 520. The upper sleeve 510 is fitted over the hexagonal nut and matches the hexagonal nut. The lower sleeve 520 is fitted over the rotating disk 420 and is connected by the serrations and the rack. The purpose of this arrangement is to better facilitate the transmission connection of the clamping component 400.

[0027] A handle 530 is also provided on the surface of the upper sleeve 510. When it is necessary to press the bearing downward, the upper sleeve 510 and the lower sleeve 520 can be rotated by rotating the handle 530, which in turn drives the hexagonal nut to move downward along the screw 300, thereby pushing the steel plate 200, steel pipe 100, etc. downward. After moving downward, they will act on the bearing to achieve the purpose of installing the bearing.

[0028] In addition to the structure described above, this embodiment also provides another structure for the rotating component 500. The rotating component 500 includes a rotating gear 540 meshing with a rack. The diameter of the rotating gear 540 is half the diameter of the rotating disk 420. A mounting bracket 550 is also provided on the steel plate 200, and a drive motor 560 is mounted on the mounting bracket 550. The drive motor 560 is also equipped with a reducer. The drive motor 560 is preferably a small motor. The output shaft of the motor is connected to the rotating gear 540 for transmission. Through meshing, the rotating disk 420 is driven to rotate. The rotation of the rotating disk 420 is uniformly controlled by the rotation of the motor. Because the radius of the rotating gear 540 is small, the rotation speed of the rotating disk 420 is slowed down, achieving the effect of deceleration and thus providing a more uniform force application effect. In order to make the transmission structure more stable, a mounting groove is also provided on the top of the steel plate 200, and the bottom of the hexagonal nut is set in the mounting groove. Similarly, to make the steel pipe 100 more stable during the downward movement, an embedded circular groove is provided at the bottom of the steel plate 200, and the top of the steel pipe 100 is placed in the embedded circular groove.

[0029] In order to adapt to the installation of different bearing structures, the structure of steel pipe 100 is further optimized, including a first arc-shaped pipe 110 and a second arc-shaped pipe 120. A first connecting ear 111 is provided on the first arc-shaped pipe 110 and a second connecting ear 121 is provided on the second arc-shaped pipe 120. When the first arc-shaped pipe 110 and the second arc-shaped pipe 120 are fastened together, the first connecting ear 111 and the second connecting ear 121 are positioned opposite each other and then fixed by fasteners, which can be screws.

[0030] The workflow of this utility model is as follows:

[0031] Install the steel pipe 100 and place it horizontally on the bearing installation workbench. Fixtures, bolts and other structures can be set on the workbench to fix it. In addition, the embedded circular groove in the steel plate 200 further stabilizes the steel pipe 100, preventing it from shaking during the downward movement of the steel pipe 100 and ensuring the vertical assembly of the bearing in the future.

[0032] Place the steel plate 200, pass the cleaned steel plate 200 through the lead screw 300, and then place it on top of the steel pipe 100. Specifically, place the top of the steel pipe 100 in the embedded circular groove. After placement, the plane of the steel plate 200 is perpendicular to the axis of the steel pipe 100. Adjust the position of the steel plate 200 on the lead screw 300 to ensure that the center of the steel plate 200 is aligned with the installation center of the shaft and bearing. You can use measuring tools such as calipers to make precise measurements and positioning to ensure the accuracy of the position of the steel plate 200, so that the bearing can be subjected to uniform pressure during assembly.

[0033] Install the clamping component 400 to clamp the bearing. Sleeve the clamping component 400 over the lead screw 300 and screw it into the lead screw 300 so that it is positioned above the steel plate 200. When the rotating component 500 is the upper sleeve 510 and the lower sleeve 520, rotate the rotating handle 530 to make the rotating component 500 drive the clamping component 400 to rotate slowly, thereby gradually driving the steel plate 200 and the steel pipe 100 to move down, and then install the bearing. The rotating handle 530 is used to drive the clamping component 400 to rotate. The rotation force can be manually controlled. The force can be selected according to the bearing installation situation. This force is controllable and easy to operate.

[0034] When the rotating component 500 is the rotating gear 540, the rotation of the rotating gear 540 is controlled by the drive motor 560. Due to the connection between the rotating gear 540 and the rotating disk 420, the rotation speed of the rotating disk 420 is half that of the rotating gear 540, which plays a role in deceleration. Through such force application, the rhythm of force application is made uniform and adjustable, thereby achieving the purpose of more uniform force application.

[0035] The rotating component 500 applies force to the clamping component 400, which in turn transmits the pressure to the steel pipe 100 through the steel plate 200, thereby clamping the bearing. Regardless of the type of clamping component 400 used, it is important to control the speed during the clamping process to avoid excessive rotation that could cause instantaneous excessive pressure and damage the bearing or shaft. At the same time, parameters such as the bearing's installation position and axial clearance should be measured multiple times to ensure that the bearing is accurately pressed onto the shaft as specified and that the axial clearance meets the fitting requirements. If the bearing's installation position or clearance is found to be unsuitable, it can be adjusted appropriately.

[0036] After the bearing clamping assembly is completed, a comprehensive inspection of the entire assembly should be conducted again. Check whether the bearing is securely mounted on the shaft and whether any burrs have appeared on the bearing during assembly. If any are found, they should be dealt with promptly. If all inspections meet the requirements, the bearing clamping assembly work is considered successfully completed.

[0037] Disassembly tools: After the bearing is installed, the tools need to be removed, the lead screw 300 is unscrewed, and then the steel plate 200, clamping part 400, rotating part 500, and steel pipe 100 are removed.

[0038] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A special tool for installing the bearing of the link rod of the guide vane of a bulb turbine unit, characterized in that, The application relates to a bearing installation tool, which comprises a steel pipe (100) in contact with the top of a bearing, the top of the steel pipe (100) is provided with a steel plate (200) with a perforation, and a screw rod (300) is arranged through the perforation of the steel plate (200) and in the steel pipe (100). A pressing part (400) is further arranged on the screw rod (300) and can move downwards along the screw rod (300) and press the steel plate (200) to push the steel pipe (100) to act on the bearing.

2. The special tool for bearing mounting of link shaft of guide vane of bulb turbine unit according to claim 1, characterized in that, The pressing part (400) comprises a rotating nut (410) which can be arranged outside the screw rod (300), the inner thread of the rotating nut (410) is matched with the thread of the screw rod (300), the bottom of the rotating nut (410) is further provided with a rotating disc (420) extending outward, and the rotating disc (420) is further provided with a rack, and a rotating part (500) is further connected through the rack.

3. The special tool for bearing mounting of the link shaft of the guide vane of the bulb turbine unit according to claim 2, characterized in that, The rotating part (500) comprises an upper sleeve disc (510) and a lower sleeve disc (520) integrally formed with the upper sleeve disc (510), the upper sleeve disc (510) is arranged above the lower sleeve disc (520), the upper sleeve disc (510) and the lower sleeve disc (520) are both hollow structures, the upper sleeve disc (510) is arranged outside the rotating nut (410), the hollow inner wall of the lower sleeve disc (520) is provided with sawteeth matched with the rack, and the lower sleeve disc (520) is sleeved outside the rotating disc (420).

4. The special tool for bearing mounting of the link shaft of the guide vane of the bulb turbine unit according to claim 3, characterized in that, The rotating nut (410) is a hexagonal nut, and the top of the upper sleeve disc (510) is further provided with a handle (530).

5. The tool for installing the bearing of the connecting rod shaft of the guide vane of the bulb tubular turbine unit according to claim 2, wherein The rotating part (500) comprises a rotating gear (540) engaged with the rack, the diameter of the rotating gear (540) is half of the diameter of the rotating disc (420), an installation support (550) is further arranged on the steel plate (200), a driving motor (560) is installed on the installation support (550), and the rotating gear (540) is sleeved on the output shaft of the driving motor (560).

6. The special tool for bearing mounting of link shaft of guide vane of bulb turbine unit according to claim 1, characterized in that, The steel plate (200) is further provided with an embedded circular groove towards the steel pipe (100), and the top of the steel pipe (100) is arranged in the embedded circular groove.

7. The special tool for installing the bearing of the link shaft of the guide vane of the bulb turbine unit according to any one of claims 1 to 6, characterized in that, The steel pipe (100) comprises a first arc-shaped pipe (110) and a second arc-shaped pipe (120), a first connecting lug (111) is arranged outward in the middle of the first arc-shaped pipe (110), a second connecting lug (121) is arranged outward in the middle of the second arc-shaped pipe (120), the first connecting lug (111) and the second connecting lug (121) are oppositely arranged, and a fastener is further arranged and passes through the first connecting lug (111) and the second connecting lug (121).

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