Cylinder-uncovering-free bearing sizing block grinding and overturning device for steam turbine

Abstract

The utility model discloses a steam turbine cylinder uncovering-free bearing sizing block grinding and overturning device, which relates to the technical field of steam turbines, and comprises a cantilever and side positioning arms, the side positioning arms are symmetrically arranged right below the cantilever, a suspension mechanism is arranged at the top end of the cantilever, and the suspension mechanism is arranged at the top end of the cantilever according to maintenance requirements. The suspension height is flexibly adjusted, so that the bearing sizing block is conveniently ground and turned over in different environments, a transposition mechanism is arranged on the outer side of the side positioning arm, and the transposition mechanism is used for clamping the outer side of a spherical surface contact tile pillow. In the using process, the clamps on the two sides are pulled, and the two sides of the spherical surface contact tile pillow are clamped through the clamps, so that the spherical surface contact tile pillows of different sizes can be clamped and positioned conveniently in the machining process, and the situation that the spherical surface contact tile pillows displace or incline in the rotating process is avoided; and further, the machining and grinding stability of the spherical surface contact tile pillow is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbines, in particular to a grinding and turning device for a non-opening cylinder bearing pad of a steam turbine. Background Art

[0002] At present, the bearing pillow of the turbine bearing is a spherical surface contact bearing pillow with a very complex structure and high maintenance process requirements. After years of operation, due to the vibration during operation and the discharge of the voltage ball of the turbine shaft, many electric corrosion pits appear on the bearing pillow joint surface, which makes the contact condition of the spherical joint surface worse and the contact area gradually decreases, failing to meet the contact area standard requirement of more than 75%, and eventually leads to the vibration of the turbine bearing; using manual grinding, it takes at least 3-5 days.

[0003] When processing bearings, normal clamping of the outer circle and inner diameter can easily cause deformation and pinching of the bearings, and requires the same height reference, which makes positioning difficult. Processing deviations can easily occur, resulting in inaccurate dimensional accuracy. In addition, when flipping the bearing pads for grinding, it is difficult to accurately control the lifting height and adjust the processing position according to maintenance needs. Summary of the Invention

[0004] The purpose of the utility model is to provide a turbine non-opening cylinder bearing pad grinding and turning device to solve the above-mentioned defects caused by the prior art.

[0005] A turbine non-cylinder bearing shim grinding and flipping device includes a cantilever and a side positioning arm. The side positioning arm is symmetrically arranged directly below the cantilever. The top of the cantilever is provided with a suspension mechanism. The suspension mechanism flexibly adjusts the suspension height according to maintenance needs, thereby facilitating the bearing shim grinding and flipping processing in different environments. A transposition mechanism is provided on the outside of the side positioning arm. The transposition mechanism clamps the outside of the spherical surface contact shoe pillow, and then rotates and flips the spherical surface contact shoe pillow, thereby reducing the generation of false points during the processing of the spherical surface contact shoe pillow.

[0006] Preferably, the suspension mechanism includes an internal threaded tube, an external threaded tube, an outer sleeve seat, a slider, a slide groove and a side positioning arm. The internal threaded tube is symmetrically connected to the top of the cantilever, the interior of the internal threaded tube is connected to the external threaded tube, and an outer sleeve seat is provided directly above the external threaded tube. Slide grooves are provided on both sides of the inner end of the cantilever, the outer side of the slide groove is connected to one side of the slider, and the other side of the slider is connected to the side positioning arm.

[0007] Preferably, the side positioning arm is connected to the outer side of the slide groove through a sliding block provided on one side.

[0008] Preferably, the shifting mechanism includes a driving gear, a motor, a driven gear, a rotating shaft, a clamp, a positioning hole and a rolling bearing. One side of the driving gear is connected to the output end of the motor, and the driven gear is meshed and connected below the driving gear. One side of the driven gear is connected to the rotating shaft, and rolling bearings are connected through both sides of the rotating shaft. Positioning holes are opened at equal intervals on the outside of the rotating shaft, and a clamp is symmetrically connected through the outside of the rotating shaft.

[0009] Preferably, the rotating shaft is connected to one side of the side positioning arm through rolling bearings provided on both sides.

[0010] Preferably, the rotating shaft is meshedly connected with the outer side of the driving gear through a driven gear provided on one side.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] 1. During use, by pulling the clamps on both sides, the two sides of the spherical contact shoe pillow are clamped by the clamps, which is convenient for clamping and positioning spherical contact shoe pillows of different sizes during processing, avoiding displacement or tilting of the spherical contact shoe pillow during rotation, thereby improving the stability of the spherical contact shoe pillow during processing and grinding.

[0013] 2. After completing the clamping, the operator turns on the motor according to the maintenance requirements, and uses the motor to drive the driving gear to rotate, and drives the driven gear and the rotating shaft on one side to rotate through the driving gear, thereby controlling the speed of the rotational transposition of the spherical contact shoe pillow, and then performing contact grinding with the spherical contact shoe pillow through the static grinding piece to improve the grinding efficiency of the spherical contact shoe pillow. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0015] Figure 2 It is a front view structural diagram of the present utility model.

[0016] Figure 3 It is a side view structural diagram of the present invention.

[0017] Figure 4 This is a schematic diagram of the front cross-section structure of the side positioning arm in the present utility model.

[0018] Figure 5 It is a schematic diagram of the overall explosion structure in the utility model.

[0019] in:

[0020] 1. Cantilever; 2. Internally threaded tube; 3. Externally threaded tube; 4. Outer sleeve; 5. Suspension mechanism; 6. Driving gear; 7. Motor; 8. Driven gear; 9. Rotating shaft; 10. Clamp; 11. Transposition mechanism; 12. Positioning hole; 13. Slider; 14. Slide; 15. Side positioning arm; 16. Rolling bearing. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figures 1 to 5 As shown, a turbine non-cylinder bearing shim grinding and flipping device includes a cantilever 1, and side positioning arms 15 are symmetrically arranged directly below the cantilever 1. A suspension mechanism 5 is provided at the top of the cantilever 1. The suspension mechanism 5 can flexibly adjust the suspension height according to maintenance needs, thereby facilitating the bearing shim grinding and flipping processing in different environments. A shifting mechanism 11 is provided on the outside of the side positioning arm 15, and the shifting mechanism 11 clamps the outside of the spherical contact shoe pillow, and then rotates and flips the spherical contact shoe pillow, thereby reducing the generation of false points during the processing of the spherical contact shoe pillow.

[0023] In this embodiment, the suspension mechanism 5 includes an internal threaded tube 2, an external threaded tube 3, an outer sleeve 4, a slider 13, a slide 14 and a side positioning arm 15. The internal threaded tube 2 is symmetrically connected to the top of the cantilever 1, and the internal threaded tube 2 is connected to the external threaded tube 3. The outer sleeve 4 is arranged directly above the external threaded tube 3. Slides 14 are provided on both sides of the inner end of the cantilever 1. The outer side of the slide 14 is connected to one side of the slider 13, and the other side of the slider 13 is connected to the side positioning arm 15. The height of the outer sleeve 4 is adjusted according to the lifting requirements to meet the lifting requirements of the spherical surface contact tile pillow in different environments.

[0024] In this embodiment, the side positioning arm 15 is connected to the outer side of the slide groove 14 through a slider 13 provided on one side, and is separated and disassembled from the slide groove 14 through the slider 13 provided on one side of the side positioning arm 15 .

[0025] In this embodiment, the shifting mechanism 11 includes a driving gear 6, a motor 7, a driven gear 8, a rotating shaft 9, a fixture 10, a positioning hole 12 and a rolling bearing 16. One side of the driving gear 6 is connected to the output end of the motor 7, and the lower part of the driving gear 6 is meshed with the driven gear 8. One side of the driven gear 8 is connected to the rotating shaft 9. Both sides of the rotating shaft 9 are penetrated by rolling bearings 16. Positioning holes 12 are opened at equal intervals on the outside of the rotating shaft 9. The outside of the rotating shaft 9 is symmetrically penetrated by the fixture 10. The driving gear 6 is driven to rotate by the motor 7, and then the driving gear 6 and the driven gear 8 with different gear ratios are meshed and transmitted.

[0026] In this embodiment, the rotating shaft 9 is connected to one side of the side positioning arm 15 through rolling bearings 16 provided on both sides, and the outer side of the rotating shaft 9 is positioned and the rotational friction is reduced by the rolling bearings 16.

[0027] In this embodiment, the rotating shaft 9 is meshed with the outer side of the driving gear 6 through a driven gear 8 provided on one side, and the driving gear 6 is driven to rotate by the motor 7, thereby controlling the rotation speed of the rotating shaft 9 to meet the processing efficiency of the bearing pad.

[0028] The practical application of this steam turbine bearing pad grinding and turning device includes the following work contents:

[0029] Step 1: The operator first rotates the outer sleeve 4 according to the size of the spherical contact shoe pillow and the lifting requirements of the outer sleeve 4. The outer sleeve 4 rotates on the external threaded tube 3, and then the external threaded tube 3 rotates outside the internal threaded tube 2. The height of the two groups of external threaded tubes 3 and the outer sleeve 4 are adjusted to the same height, and the crane is inserted to the outside of the outer sleeve 4 to vertically lift the cantilever 1 and the outer sleeve 4.

[0030] Step 2: The operator inserts the rotating shaft 9 into the outside of the spherical contact shoe pillow, pulls the clamps 10 on both sides, and moves the clamps 10 on the outside of the rotating shaft 9 to clamp both sides of the spherical contact shoe pillow. At the same time, the operator inserts the bolts into the inside of the positioning holes 12, and then positions the clamps 10 symmetrically. Then, the two sides of the rotating shaft 9 are connected to the outside of the rolling bearings 16 on both sides of the side positioning arms 15;

[0031] Step 3: The operator then positions the slider 13 provided on the outer side of the side positioning arm 15 with the outer side of the slide groove 14, and then connects the side positioning arm 15 to the outer side of the slider 13. The operator connects the cantilever 1 and the slide groove 14 provided on the outer side of the side positioning arm 15 with bolts, and vertically lifts the spherical contact shoe pillow with a crane. At the same time, the operator turns on the motor 7, and drives the driving gear 6 to rotate.

[0032] Step 4: The motor 7 drives the driving gear 6 to rotate, and the driving gear 6 is used to engage with the driven gear 8 set on one side. The driven gear 8 drives the rotating shaft 9 and the clamp 10 to rotate, and then the spherical surface contact shoe pillow that has been positioned is rotated, so that the operator can grind the outer side of the spherical surface contact shoe pillow, and then switch the grinding position of the spherical surface contact shoe pillow through the clamp 10.

[0033] Therefore, the embodiments disclosed above are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. A steam turbine bearing pad grinding and turning device, characterized by: The invention comprises a cantilever (1) and a side positioning arm (15), wherein the side positioning arm (15) is symmetrically arranged directly below the cantilever (1), and a suspension mechanism (5) is arranged at the top end of the cantilever (1). The suspension mechanism (5) flexibly adjusts the suspension height according to maintenance requirements, thereby facilitating the grinding and flipping of the bearing pad in different environments. A transposition mechanism (11) is arranged on the outside of the side positioning arm (15), and the transposition mechanism (11) clamps the outside of the spherical contact shoe pillow, thereby rotating and flipping the spherical contact shoe pillow, thereby reducing the generation of false points during the processing of the spherical contact shoe pillow.

2. The steam turbine bearing pad grinding and turning device according to claim 1 is characterized in that: The suspension mechanism (5) includes an internal threaded tube (2), an external threaded tube (3), an outer sleeve (4), a slider (13), a slide groove (14) and a side positioning arm (15). The internal threaded tube (2) is symmetrically connected to the top of the cantilever (1). The internal threaded tube (2) is connected to the external threaded tube (3). The outer sleeve (4) is provided directly above the external threaded tube (3). Slide grooves (14) are provided on both sides of the inner end of the cantilever (1). The outer side of the slide groove (14) is connected to one side of the slider (13), and the other side of the slider (13) is connected to the side positioning arm (15).

3. The grinding and turning device for a steam turbine bearing pad according to claim 2, characterized in that: The side positioning arm (15) is connected to the outer side of the sliding groove (14) via a sliding block (13) provided on one side.

4. The steam turbine bearing pad grinding and turning device according to claim 1 is characterized in that: The shifting mechanism (11) comprises a driving gear (6), a motor (7), a driven gear (8), a rotating shaft (9), a fixture (10), a positioning hole (12) and a rolling bearing (16); one side of the driving gear (6) is connected to the output end of the motor (7); the lower side of the driving gear (6) is meshedly connected to the driven gear (8); one side of the driven gear (8) is connected to the rotating shaft (9); both sides of the rotating shaft (9) are penetrated and connected with rolling bearings (16); the outer side of the rotating shaft (9) is provided with positioning holes (12) at equal intervals; the outer side of the rotating shaft (9) is symmetrically penetrated and connected with the fixture (10).

5. The steam turbine bearing pad grinding and turning device according to claim 4 is characterized in that: The rotating shaft (9) is connected to one side of the side positioning arm (15) through rolling bearings (16) arranged on both sides.

6. The steam turbine bearing pad grinding and turning device according to claim 4, characterized in that: The rotating shaft (9) is meshedly connected with the outer side of the driving gear (6) via a driven gear (8) provided on one side.

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