Tile holding tool for adjusting bearing clearance of hydro-generator

Abstract

The utility model provides a tile holding tool for adjusting the bearing clearance of a hydro-generator, which comprises a plurality of bearing tiles arranged between a large shaft and the inner wall of a tile frame, and tile holding tools are arranged between the two sides of the bearing tiles and the inner wall of the tile frame; the tile holding tool comprises a bearing block, one end of the bearing block is provided with a tile jacking bolt in threaded connection, the end of the tile jacking bolt is provided with a rotary tile jacking cap, the tile jacking cap abuts against the bearing tile, and the other end of the bearing block abuts against the inner wall of the tile frame. Through the innovative design and function optimization, the safety, efficiency and quality of the maintenance operation of the water-turbine generator set are remarkably improved, and a great progress is made in the field of modern mechanical equipment maintenance.

Description

Technical Field

[0001] The utility model relates to the field of mechanical maintenance tools for hydro-generator sets, in particular to a shoe-holding tool for adjusting the clearance of hydro-generator bearings. Background Art

[0002] In the mechanical maintenance of hydro-generator sets, it is extremely important to adjust the bearing clearance properly, which is related to the temperature of bearing bushes and lubricating oil during operation, and is an important guarantee for the safe and stable operation of the unit. Before the clearance adjustment, each bearing bush needs to be clamped. The traditional shaft clamping tool is two sets of ordinary bolts and nuts, and two sets of head wrenches are installed on both sides of the bearing bush back to clamp the shaft. The disadvantages of this method are: first, the installation is time-consuming and labor-intensive. Before clamping the shaft, the bolts need to be manually adjusted to support the bush back, and then the wrench is used to tighten the shaft into place. Moreover, this tool can only use a flat-head wrench, which has limitations. The first is the limitation of use. The effective distance of the traditional bushing holding tool is only half the thickness of the nut. For the bushings of different bearings, multiple sets of tools with different lengths are required. The third is the large space restriction. For some lower guide bearings with small space, they need to be installed from bottom to top. This method is extremely difficult and laborious for maintenance personnel. The fourth is the high safety risk. The main risk is the risk that the bolts and wrenches may fall into the oil pan at any time, and the risk of falling and injuring the operators when working from bottom to top. In addition, the traditional tools may cause different degrees of damage to the inner wall of the bearing bushing frame and the back of the bushing. Utility Model Content

[0003] The main purpose of the utility model is to provide a shoe holding tool for adjusting the bearing clearance of a hydro-generator, so as to solve the problems in the above-mentioned background technology.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: a plurality of bearing pads are installed between the main shaft and the inner wall of the pad frame, and pad holding tools are provided between the two sides of the bearing pads and the inner wall of the pad frame;

[0005] The tile holding tool includes a load-bearing block, one end of which is provided with a threaded top tile bolt, the end of which is provided with a rotating top tile cap, which rests on the bearing tile, and the other end of the load-bearing block rests on the inner wall of the tile frame.

[0006] Preferably, the load-bearing block is C-shaped, with a threaded hole at one end and a curved surface at the other end, and the top tile bolt is connected to the thread;

[0007] The arc surface at the end of the load-bearing block rests against the inner wall of the tile frame.

[0008] Preferably, a through hole is provided on one side of the load-bearing block, and a rope is passed through the through hole to connect the tile holding tools on both sides and fix them on the inner wall of the tile frame.

[0009] Preferably, one end of the top tile cap is an arc surface, and the other end is provided with a slot, and the end of the top tile bolt abuts against the slot and rotates;

[0010] The arc surface of the end of the top shoe cap rests on the bearing shoe.

[0011] The utility model provides a shoe holding tool for adjusting the bearing clearance of a hydro-generator, which has the following beneficial effects:

[0012] 1. The actual operation is convenient, it can be mastered and tightened with one hand, and the use with a ratchet wrench greatly improves the efficiency of holding the tile, avoiding the tedious alternation of manual tightening and tool tightening.

[0013] 2. When operating in a narrow space and from bottom to top, it greatly reduces the difficulty of operation for operators. In this case, it also avoids the risk of traditional tools falling and injuring people due to insufficient force to tighten the bolts by hand.

[0014] 3. The scope of use is increased. The length of the top bushing bolt is generally thicker than that of the traditional tool nut, and the movable distance is greatly increased. The top bushing bolt and the load-bearing block can be flexibly adjusted to achieve the bearing bushing of different guide bearings, which has wide practicality.

[0015] 4. Safety risks are reduced by using connecting ropes and reducing the number of wrenches used. The risk of tool parts falling is reduced. The load-bearing blocks and top tile caps adopt a curved surface design, which reduces damage to the bearing shells and the inner wall surface of the tile frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a top view of the overall structure of the utility model when it is installed and used;

[0018] Figure 2 This is an axial side view of the tile holding tool of the utility model;

[0019] Figure 3 This is a front sectional view of the utility model tile holding tool;

[0020] In the figure: main shaft 1; inner wall of tile frame 2; tile holding tool 3; load-bearing block 301; through hole 302; arc surface 303; top tile cap 304; top tile bolt 305; bearing tile 4. DETAILED DESCRIPTION

[0021] like Figures 1-3 As shown, a shoe holding tool for adjusting the bearing clearance of a hydro-generator comprises a plurality of bearing shoes 4 installed between a main shaft 1 and an inner wall 2 of a shoe frame, and shoe holding tools 3 are provided between both sides of the bearing shoes 4 and the inner wall 2 of the shoe frame;

[0022] The shoe-holding tool 3 includes a bearing block 301, one end of which is provided with a threaded top shoe bolt 305. The end of the top shoe bolt 305 is provided with a rotating top shoe cap 304. The top shoe cap 304 abuts against the bearing shoe 4, and the other end of the bearing block 301 abuts against the inner wall 2 of the shoe frame. By driving the top shoe bolt 305 to rotate by a ratchet, the top shoe cap 304 pushes the bearing shoe 4 to move against the main shaft 1. After completing the above steps, the bearing shoe holding work is completed, and the bearing shoe anti-weight bolt can be adjusted to adjust the clearance.

[0023] The bearing block 301 is made of high-strength material to withstand the pressure transmitted by the top pad bolts, ensuring the tool's stability and reliability during use. The top pad bolts 305 rotate to achieve linear displacement, pushing the top pad cap forward or backward. The top pad bolt design allows for easy adjustment of its position using a ratchet or other actuator, enabling precise adjustment of the bearing pad.

[0024] The top shoe cap 304 is located at the end of the top shoe bolt and contacts the bearing shoe. The top shoe bolt pushes the bearing shoe to achieve the purpose of the bearing shoe holding the shaft. The shape and material of the top shoe cap must ensure that the bearing shoe surface will not be damaged during the pressing process.

[0025] Rotating the ratchet controls the unidirectional movement of the top pad bolts, allowing them to advance only and preventing reverse sliding, thereby ensuring stable and precise adjustment of the bearing pads. The inner wall 2 of the pad frame and the main shaft 1 form the fixed structure and rotating components of the turbine generator, with the bearing pads 4 mounted between them. Using the pad gripping tool, the bearing pads can be fine-tuned on the main shaft to ensure optimal operating clearance.

[0026] Maintenance personnel can easily adjust the top shoe bolts using a ratchet drive system, allowing the top shoe cap to gradually push against the bearing shoe until the desired clearance is achieved. Compared to the traditional bolt-and-nut method, this method not only improves convenience and efficiency, but also reduces safety hazards caused by improper operation.

[0027] Preferably, the load-bearing block 301 is C-shaped, with a threaded hole provided at one end of the load-bearing block 301 and a curved surface 303 provided at the other end, with the top tile bolt 305 being connected to the thread;

[0028] The arc surface 303 at the end of the load-bearing block 301 abuts against the inner wall 2 of the tile frame.

[0029] The C-shaped design provides a good support surface, evenly distributing the pressure applied by the jacking shoe bolts 305, preventing unnecessary lateral forces during the jacking process and ensuring the overall stability and durability of the tool. The C-shaped opening allows the load-bearing block to fit snugly within the narrow space between the shoe frame inner wall 2 and the bearing shoe 4, making it particularly suitable for applications where space is limited within equipment such as hydro-generators.

[0030] The curved surface on one end of the bearing block 301 ensures a closer fit between the tool and the inner wall 2 of the tile frame, reducing stress concentration. The curved surface also helps disperse pressure, protecting the inner wall of the tile frame from localized damage caused by excessive pressure. A threaded hole on one end of the bearing block 301 is threadedly connected to the top shoe bolt 305. By rotating the top shoe bolt, the bearing shoe 4 can be precisely pushed against the main shaft 1.

[0031] Preferably, a through hole 302 is provided on one side of the load-bearing block 301 , and a rope is passed through the through hole 302 to connect the tile holding tools 3 on both sides and fix them on the inner wall 2 of the tile frame.

[0032] In confined or elevated working environments, tools can easily fall. Connecting the two tile-holding tools 3 with a rope, which is then attached to the inner wall of the tile holder, effectively prevents the tools from accidentally being lost or falling into the equipment during use, reducing potential safety hazards and financial losses. The rope connection acts as a second line of defense. Even if errors occur during operation, such as loosening of the tile-holding bolts 305 or tile-holding caps 304, the load-bearing blocks will not immediately fall, providing additional safety for the operator.

[0033] In complex work environments, the rope connection helps keep tools organized, especially in situations where tools need to be frequently used and changed. It ensures that the tile holding tools are always within the operator's control, avoiding confusion and misoperation. In maintenance environments with limited space, the rope connection provides a flexible solution, allowing the load block 301 to be hung in place when not in use, saving space and providing convenient access.

[0034] Preferably, one end of the top tile cap 304 is an arc surface, and the other end is provided with a slot, and the end of the top tile bolt 305 abuts against the slot and rotates;

[0035] The arc surface at the end of the top shoe cap 304 rests on the bearing shoe 4.

[0036] The curved surface on one end of the pad cap 304 is designed to better conform to the contour of the bearing pad 4. This ensures even pressure distribution during the jacking process and avoids localized overload or damage to the bearing pad. The radius of curvature of the curved surface should match the curvature of the bearing pad to achieve optimal contact.

[0037] The end of the top tile bolt 305 fits into the slot on the top tile cap 304. This design allows the cap to rotate on the top tile bolt but does not allow it to move axially. This structure ensures that the cap can smoothly advance or retract as the top tile bolt rotates while maintaining contact with the bearing pad, achieving fine adjustment of the clearance.

[0038] Thanks to the slotted fit between the top tile cap 304 and the top tile bolt 305, the top tile cap moves on the top tile bolt by rotation rather than sliding. This not only reduces friction and wear but also improves adjustment accuracy and stability. By controlling the rotation angle of the top tile bolt, the position of the top tile cap can be adjusted very precisely, thereby fine-tuning the clearance between the bearing pad and the main shaft. This fine-tuning capability is crucial for ensuring smooth operation of the hydro-turbine generator set and extending the equipment life.

[0039] The above embodiments are merely preferred technical solutions of the present invention and should not be construed as limiting the present invention. The scope of protection of the present invention shall be the technical solutions set forth in the claims, including equivalent alternatives to the technical features of the technical solutions set forth in the claims. Equivalent alternatives and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A bearing bushing tool for adjusting the bearing clearance of a hydro-generator, comprising a plurality of bearing bushes (4) installed between a main shaft (1) and an inner wall of a bushing frame (2), wherein: A bearing shoe (4) is provided with shoe holding tools (3) between the shoe back sides and the shoe frame inner wall (2); The tile holding tool (3) comprises a bearing block (301), one end of the bearing block (301) is provided with a threaded top tile bolt (305), the end of the top tile bolt (305) is provided with a rotatable top tile cap (304), the top tile cap (304) abuts against the bearing tile (4), and the other end of the bearing block (301) abuts against the inner wall (2) of the tile frame.

2. The shoe holding tool for adjusting the bearing clearance of a hydro-generator according to claim 1, characterized in that: The load-bearing block (301) is C-shaped, with a threaded hole provided at one end and a curved surface (303) provided at the other end, and a top tile bolt (305) connected to the threaded hole; The arc surface (303) at the end of the load-bearing block (301) abuts against the inner wall (2) of the tile frame.

3. The shoe holding tool for adjusting the bearing clearance of a hydro-generator according to claim 1 is characterized by: A through hole (302) is provided on one side of the load-bearing block (301), and a rope passes through the through hole (302) to connect the tile holding tools (3) on both sides and fix them on the inner wall (2) of the tile frame.

4. The shoe holding tool for adjusting the bearing clearance of a hydro-generator according to claim 1 is characterized by: One end of the top tile cap (304) is an arc surface, and the other end is provided with a slot, and the end of the top tile bolt (305) rests against the slot and rotates; The arc surface at the end of the top shoe cap (304) rests on the bearing shoe (4).

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