A copper tooth scraping tool for outer oil baffle of steam turbine bearing

Abstract

The utility model discloses a turbine bearing outer oil baffle copper tooth repair scraping tool, include: scraper head, its working end is equipped with the wedge-shaped cutting edge of angle matching with oil baffle copper tooth, handle, present long rod state, and the front end fixed connection scraper head, the handle of gripping, for hollow cylinder structure, and handle can slide and be arranged in the inside of gripping, length adjusting mechanism, set up in the inside of gripping, the cutting edge plane of scraper head is perpendicular to handle axis. The utility model discloses a telescopic handle and gripping structure, combine the screw thread precision drive mechanism, effectively solved the traditional tool in the narrow space of steam turbine when the operation of oil baffle copper tooth is inconvenient, and the precision is out of control's difficult problem. It can flexible adaptation different operation depth, and the adjustment process is stable and accurate, and the scale visualization guarantees the repair scraping size consistency, and the overhaul quality and efficiency are greatly improved. Anti -skidding handle and contraction design have strengthened the operation safety and portability, and the overall structure is simple, and the practicality is strong, and the equipment damage risk and maintenance cost are reduced significantly.

Description

Technical Field

[0001] This utility model relates to the technical field of steam turbine repair and maintenance tools, and more specifically, to a tool for scraping the copper teeth of the outer oil baffle of a steam turbine bearing. Background Technology

[0002] The copper teeth of the outer oil baffle of turbine bearings will wear or deform after long-term operation, requiring regular scraping to ensure proper clearance with the journal and prevent oil leakage. Traditional scraping operations often use ordinary scrapers or homemade tools, which have significant drawbacks: the on-site maintenance space is usually extremely confined, and the fixed-length tool handle is difficult to adapt flexibly to the needs of different positions. Operators are often forced into awkward postures due to the inappropriate tool length, which not only greatly reduces the scraping accuracy and efficiency, but also easily causes uneven scraping or over-scraping of the copper teeth surface, and poses a significant risk of tool slippage and damage to the precision journal. In addition, existing tools lack precise length control mechanisms, relying entirely on the operator's experience and feel, which cannot guarantee the consistency of scraping amount, seriously affecting maintenance quality and safe equipment operation. Therefore, there is an urgent need for a specialized scraping tool that can adapt to confined spaces and allows for precise length adjustment. Utility Model Content

[0003] To address the aforementioned problems in the existing technology, the purpose of this utility model is to provide a tool for scraping the copper teeth of the external oil baffle of a steam turbine bearing, comprising: The scraper head has a wedge-shaped cutting edge at its working end that matches the angle of the oil baffle copper teeth; The handle is long and rod-shaped, with the scraper head fixedly connected to the front end; The grip is a hollow cylindrical structure, and the knife handle can slide through the inside of the grip; The length adjustment mechanism, located inside the grip, is used to drive the axial movement of the tool holder; The cutting edge plane of the scraper head is perpendicular to the axis of the handle, and the handle and grip slide together on the same axis.

[0004] As a preferred embodiment, the wedge-shaped cutting edge of the scraper head is formed by the intersection of a vertical surface and a 60° inclined surface, the width of the cutting edge is adapted to the spacing of the copper teeth of the oil baffle, and the material is a stainless steel cutting blade with a hardness higher than that of copper.

[0005] As a preferred embodiment, the length adjustment mechanism includes a threaded hole at the end of the handle, an adjusting screw is threaded into the threaded hole, one end of the adjusting screw is located inside the handle and fixedly connected to the end of the handle, and the other end extends to the outside of the handle.

[0006] As a preferred embodiment, the outer end of the adjusting screw is fixedly connected to an adjusting handle.

[0007] As a preferred embodiment, the length adjustment mechanism further includes: Sliding grooves are formed on the inner walls of both sides of the grip; A sliding block is fixed at both ends of the tool holder, and the sliding block is slidably connected to the sliding groove.

[0008] As a preferred embodiment, the outer wall of the grip is provided with anti-slip textured sections in the middle, and the surface of the anti-slip textured sections is provided with raised grid patterns in an alternating manner, the length of which covers the single-hand gripping area.

[0009] As a preferred embodiment, a scale strip is etched on one side of the surface of the handle, and the front end face of the grip mates with the scale strip.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention effectively solves the problems of inconvenient operation and loss of precision when using traditional tools to scrape the copper teeth of oil baffles in the confined space of a steam turbine, through a retractable handle and grip structure combined with a precision threaded drive mechanism. It can flexibly adapt to different working depths, the adjustment process is smooth and precise, and the visual scale ensures consistent scraping dimensions, greatly improving maintenance quality and efficiency. The non-slip grip and retractable design enhance operational safety and portability. The overall structure is simple, highly practical, and significantly reduces the risk of equipment damage and maintenance costs. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the specific structure of this utility model; Figure 2 This is a top view of the cutter head structure of this utility model. Detailed Implementation

[0012] The present invention will be further described below with reference to specific embodiments.

[0013] A tool for scraping the copper teeth of the outer oil baffle of a steam turbine bearing, comprising: The scraper head 1 has a wedge-shaped cutting edge 11 at its working end that matches the angle of the oil baffle copper teeth; The handle 2 is a long rod, with the scraper head 1 fixedly connected to the front end; The handle 3 is a hollow cylindrical structure, and the knife handle 2 can be slidably inserted into the handle 3; The length adjustment mechanism 4 is located inside the handle 3 and is used to drive the tool holder 2 to move axially. The cutting edge plane of the scraper head 1 is perpendicular to the axis of the handle 2, and the handle 2 and the grip 3 are coaxially slidingly engaged.

[0014] When scraping the copper teeth of the outer oil baffle of a steam turbine bearing, the operator can first hold the handle 3 in their hand and precisely adjust the length of the cutter handle 2 extending beyond the handle 3 using the length adjustment mechanism 4 to accommodate the scraping needs of copper teeth at different depths and positions. Then, using the wedge-shaped cutting edge 11 of the scraper head 1 to tightly fit against the surface of the copper teeth, the operator pushes the handle 3 with a steady and even force, causing the scraper head 1 to precisely scrape along the angle of the copper teeth. Because the cutting edge plane of the scraper head 1 is perpendicular to the axis of the handle 2, the consistency of the scraping direction during the scraping process is ensured, avoiding damage to the copper teeth caused by angular deviations. Simultaneously, the coaxial sliding fit between the handle 2 and the handle 3 makes the operation more flexible and stable, improving scraping efficiency and accuracy.

[0015] As a preferred embodiment, the wedge-shaped cutting edge 11 of the scraper head 1 is formed by the intersection of a vertical surface and a 60° inclined surface, the width of the cutting edge is adapted to the spacing of the oil baffle copper teeth, and the material is a white steel cutting blade with a hardness higher than that of copper.

[0016] This design allows the wedge-shaped cutting edge 11 to cut more effectively into the gaps between the copper teeth during scraping, improving the scraping effect. The vertical facet ensures the stability of the cutting edge during scraping, while the 60° inclined facet provides a suitable scraping angle, making the scraping process smoother. The precise design of the cutting edge width ensures a match with the spacing of the copper teeth in the oil stop, avoiding incomplete scraping or damage to the copper teeth due to a cutting edge that is too wide or too narrow. At the same time, the use of high-performance stainless steel cutting blades with a hardness higher than copper ensures the durability and scraping efficiency of the scraper head 1, extending the service life of the scraper.

[0017] In a preferred embodiment, the length adjustment mechanism 4 includes a threaded hole 41 at the tail end of the handle 3, and an adjustment screw 42 is internally threaded into the threaded hole 41. One end of the adjustment screw 42 is located inside the handle 3 and is fixedly connected to the tail end of the handle 2, while the other end extends to the outside of the handle 3.

[0018] By rotating the adjusting screw 42, the extension length of the handle 2 and scraper head 1 relative to the grip 3 can be easily adjusted, thus adapting to the scraping needs of copper teeth at different depths. This not only enhances the applicability of the scraper but also allows operators to more precisely control the scraping depth and force during the scraping process, further improving the accuracy and efficiency of scraping. At the same time, the stability of the threaded connection ensures that the adjusted length is not easily loosened, guaranteeing the stability and safety of the scraping process.

[0019] Furthermore, the design of this length adjustment mechanism 4 also takes into account the convenience and comfort of the operator. The rotation of the adjusting screw 42 is simple and quick, requiring no complicated tools or steps to adjust the length, greatly saving the operator's time and effort. Moreover, the other end of the adjusting screw 42 extends to the outside of the handle 3, allowing the operator to adjust the length directly by rotating the adjusting screw 42 without having to insert their hand into the handle 3, thus improving the convenience and comfort of operation.

[0020] In a preferred embodiment, an adjusting handle 43 is fixedly connected to the outer end of the adjusting screw 42. The design of the adjusting handle 43 allows the operator to manually rotate the adjusting screw 42, enabling length adjustment without the need for other tools, greatly improving operational convenience. The surface of the adjusting handle 43 is provided with anti-slip texture, increasing the friction between the hand and the adjusting handle 43, preventing adjustment errors due to slippage during rotation, and further improving operational stability and accuracy. In addition, the adjusting handle 43 is made of wear-resistant and corrosion-resistant materials, ensuring its long-term reliability and durability.

[0021] In a preferred embodiment, the length adjustment mechanism 4 further includes: Sliding grooves 44 are formed on the inner walls of both sides of the grip 3; The sliding block 45 is fixed at both ends of the tool holder 2, and the sliding block 45 is slidably connected to the sliding groove 44.

[0022] The sliding groove 44 provides guidance and limits for the extension length of the handle 2 and the scraper head 1, ensuring smoothness and accuracy during adjustment. The tight fit between the sliding block 45 and the sliding groove 44 effectively prevents the handle 2 from shaking or shifting during adjustment, further improving the stability and precision of scraping. Meanwhile, both the sliding groove 44 and the sliding block 45 are made of high-strength, wear-resistant materials, ensuring stability and durability over long-term use and extending the scraper's service life.

[0023] As a preferred embodiment, the outer wall of the grip 3 is provided with anti-slip textured section 31 in the middle, and the surface of the grip 3 has raised grid patterns distributed in an alternating manner. The length of the anti-slip textured section 31 covers the single-hand grip area.

[0024] This design not only enhances the friction between the grip 3 and the hand, effectively preventing slippage during use and improving operational safety, but also increases tactile feedback through the interlaced raised mesh pattern. This allows users to more clearly perceive the shape of the grip 3 while holding it, thus enabling more precise control over the scraper's operating force and direction. Furthermore, the anti-slip grooves 31 cover the single-handed grip area, ensuring good anti-slip performance and grip comfort for both left-handed and right-handed users, further improving the overall user experience and operational efficiency of the scraper.

[0025] In a preferred embodiment, a scale strip 21 is etched on one side of the handle 2. The front end face of the grip 3 corresponds to a certain scale mark on the scale strip 21. When the grip 3 is rotated to a specific position, the front end face of the grip 3 aligns with the corresponding scale mark, thus visually displaying the current working status and extension length of the scraper. This design not only facilitates precise control and adjustment of the extension length of the scraper 1 during use but also improves the accuracy and efficiency of operation through visual indication.

[0026] The contents not described in detail in this specification are existing technologies known to those skilled in the art, and their specifications and models can be selected according to actual conditions.

[0027] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical embodiments described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tool for shaving and scraping a bronze gear of a turbine bearing outer oil shield, characterized by, include: The scraper head (1) has a wedge-shaped cutting edge (11) at its working end that matches the angle of the oil baffle copper teeth. The handle (2) is long rod-shaped, with the scraper head (1) fixedly connected to the front end. The handle (3) is a hollow cylindrical structure, and the knife handle (2) is slidably inserted inside the handle (3); The length adjustment mechanism (4) is located inside the handle (3) and is used to drive the tool holder (2) to move axially. The cutting edge plane of the scraper head (1) is perpendicular to the axis of the handle (2), and the handle (2) and the grip (3) slide together on the same axis.

2. A tool for shaving and scraping a brass gear of an outer oil seal of a turbine bearing according to claim 1, wherein The wedge-shaped cutting edge (11) of the scraper head (1) is formed by the intersection of a vertical surface and a 60° inclined surface. The width of the cutting edge is adapted to the spacing of the oil baffle copper teeth. The material is a white steel cutting blade with a hardness higher than that of copper.

3. A tool for shaving and scraping a brass gear of a turbine bearing outer oil shield according to claim 1, wherein The length adjustment mechanism (4) includes a threaded hole (41) at the end of the handle (3), and an adjusting screw (42) is threadedly connected to the threaded hole (41). One end of the adjusting screw (42) is located inside the handle (3) and is fixedly connected to the end of the handle (2), while the other end extends to the outside of the handle (3).

4. A tool for shaving and scraping a brass bearing outer oil shield of a turbine shaft as defined in claim 3, wherein An adjusting handle (43) is fixedly connected to the outer end of the adjusting screw (42).

5. A tool for shaving and scraping a brass bearing outer oil shield of a turbine shaft as defined in claim 1, wherein, The length adjustment mechanism (4) further includes: Sliding grooves (44) are formed on the inner walls of both sides of the grip (3); The sliding block (45) is fixed at both ends of the tool holder (2), and the sliding block (45) is slidably connected to the sliding groove (44).

6. A tool for shaving and scraping a brass bearing outer oil shield of a turbine shaft as defined in claim 1, wherein, The grip (3) has an anti-slip textured section (31) in the middle of its outer wall, and the surface of the anti-slip textured section (31) is interspersed with raised grid patterns. The length of the anti-slip textured section (31) covers the single-hand grip area.

7. A tool for shaving and scraping a brass bearing outer oil shield of a turbine shaft as defined in claim 1, wherein, The handle (2) has a scale strip (21) etched on one side of its surface, and the front end face of the grip (3) is matched with the scale strip (21).

Images