CN118288163B - Turbine blade coping device - Google Patents
Turbine blade coping device Download PDFInfo
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- CN118288163B CN118288163B CN202410726944.0A CN202410726944A CN118288163B CN 118288163 B CN118288163 B CN 118288163B CN 202410726944 A CN202410726944 A CN 202410726944A CN 118288163 B CN118288163 B CN 118288163B
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- 230000010485 coping Effects 0.000 title claims abstract description 9
- 230000001360 synchronised effect Effects 0.000 abstract 1
- 230000009471 action Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 239000000428 dust Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000005498 polishing Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
A turbine blade coping device for carry out surface coping to the moving blade on turbine rotor main shaft and the impeller, including follow-up centrifugal grinding apparatus, rotation wheel cover and differential drive assembly, rotation wheel cover is fixed to be located on the impeller, differential drive assembly and impeller are connected, differential drive assembly is used for driving the impeller rotation, rotation wheel cover disposes along with the synchronous rotation of impeller, through the centrifugal force drive centrifugal slip grinding apparatus that rotates and remove the coping at moving blade surface, also can be according to the quantity and the nimble quantity and the position of moving blade of adjustment follow-up frame and centrifugal slip grinding apparatus to realize the surface of coping moving blade under the circumstances that need not to dismantle the moving blade, improved the coping efficiency, reduced operation step and work load, avoided the mechanical wear that produces when dismantling the moving blade simultaneously.
Description
Technical Field
The invention belongs to the technical field of turbine blade maintenance equipment, and particularly relates to a turbine blade grinding device.
Background
The turbine is a rotary steam power device, high-temperature and high-pressure steam passes through a fixed nozzle to become accelerated airflow and then is sprayed onto blades, so that a rotor provided with a blade row rotates and simultaneously does work outwards, and the turbine is main equipment of a thermal power plant.
In use, the blades are contacted with steam flow for a long time, the surfaces of the blades are worn and corroded to different degrees, and in order not to influence the performance of the steam turbine, the blades are required to be cleaned and polished regularly, so that the surface smoothness of the blades is ensured; when the turbine blade is polished at present, a single blade needs to be detached, the operation is more complicated, and the polishing efficiency is low; meanwhile, when a worker performs small-range grinding, the blade can not be disassembled, and the blade can be directly operated on an impeller of the steam turbine, so that generated dust enters a rotor main shaft to damage the rotor main shaft of the steam turbine.
Disclosure of Invention
In view of the foregoing, the present invention provides a turbine blade grinding device to at least partially solve the foregoing technical problems.
The technical scheme adopted by the invention is as follows: the invention provides a turbine blade grinding device which is used for carrying out surface grinding on a turbine rotor main shaft and moving blades on an impeller, and comprises a follow-up centrifugal grinding tool, a rotating wheel sleeve and a differential driving assembly, wherein the rotating wheel sleeve is fixedly arranged on the impeller, the differential driving assembly is connected with the impeller, the differential driving assembly is used for driving the impeller to rotate, and the rotating wheel sleeve is configured to synchronously rotate along with the impeller.
The follow-up centrifugal grinding tool comprises a follow-up frame and a centrifugal sliding grinding tool, wherein the follow-up frame is connected to the rotating wheel sleeve and is configured to synchronously rotate along with the impeller; the follow-up frame is arranged at a position close to the moving blade, the moving blade is arranged in the follow-up frame, the centrifugal sliding grinding tool is arranged on the follow-up frame in a sliding mode, the centrifugal sliding grinding tool is attached to the surface of the moving blade, and the centrifugal sliding grinding tool is used for polishing the surface of the moving blade.
When the impeller rotates, the centrifugal sliding grinding tool slides on the follow-up frame under the centrifugal force.
Further, the follow-up centrifugal grinding tool further comprises a reset screw, the reset screw is rotationally connected with the follow-up frame, a screw bevel gear is arranged on the reset screw, the reset screw is connected with the centrifugal sliding grinding tool, and the reset screw is configured to drive the centrifugal sliding grinding tool to slide on the follow-up frame when rotating.
The differential drive assembly comprises a servo motor and a differential coupler, two ends of the differential coupler are respectively connected to the impeller and the servo motor, a half-shaft bevel gear is further arranged on the differential coupler, the half-shaft bevel gear is intermittently meshed with the screw bevel gear, and an angular speed difference exists when the half-shaft bevel gear and the impeller rotate.
Further, the follow-up frame comprises a first arc-shaped frame, a frame connecting rod is arranged on the first arc-shaped frame, the centrifugal sliding grinding tool comprises a second arc-shaped frame and a movable grinding tool, the movable grinding tool is movably arranged on the second arc-shaped frame, the second arc-shaped frame is slidably connected on the frame connecting rod, and the movable grinding tool is used for grinding moving blades.
Further, a smooth shaft sleeve is arranged on the first arc-shaped frame, the minimum inner diameter of the smooth shaft sleeve is larger than the maximum outer diameter of the reset screw, and the reset screw penetrates through the smooth shaft sleeve; the second arc-shaped frame is provided with a fixed thread shaft sleeve, the thread shaft sleeve penetrates through the reset screw rod and is meshed with the reset screw rod, the rotation of the reset screw rod is linked with the sliding of the second arc-shaped frame on the frame connecting rod, the reset screw rod drives the second arc-shaped frame to slide when being configured to rotate, and the second arc-shaped frame drives the reset screw rod to rotate when being configured to slide on the frame connecting rod.
Further, be equipped with the grinding apparatus slide bar on the second arc frame, be equipped with sliding connection's grinding apparatus slider on the grinding apparatus slide bar, be equipped with the grinding apparatus spring on the grinding apparatus slider, grinding apparatus spring both ends are connected respectively on grinding apparatus slider and second arc frame.
The movable grinding tool is provided with a connecting rocker and a rocker base, one end of the connecting rocker is rotationally connected with the rocker base, and the other end of the connecting rocker is rotationally connected with the grinding tool sliding block.
Further, the second arc-shaped frame is provided with a grinding tool sinking groove, the grinding tool sliding rod, the grinding tool sliding block and the grinding tool spring are arranged inside the grinding tool sinking groove, and the grinding tool sliding rod, the grinding tool sliding block and the grinding tool spring do not exceed the plane where the notch of the grinding tool sinking groove is located.
Further, a fixed steel wire brush is arranged on the movable grinding tool, and the steel wire brush is kept in pressure contact with the surface of the moving blade.
Further, the rotating wheel sleeve comprises half-ring hoops and self-fastening bolts, the rotating wheel sleeve is formed by combining symmetrical half-ring hoops, the half-ring hoops are fixedly connected through the self-fastening bolts, and the curvature of the inner surface of the half-ring hoops is equal to that of the outer surface of the impeller.
Further, the half-circle hoop is provided with a grinding tool connecting piece and a screw rod supporting piece which are fixedly connected, the follow-up frame is fixedly connected to the grinding tool connecting piece, the reset screw rod is rotatably arranged on the screw rod supporting piece, and the screw rod supporting piece supports the reset screw rod.
Compared with the prior art, the invention has the following advantages:
According to the invention, the centrifugal sliding grinding tool is driven to move on the surface of the moving blade for grinding by the centrifugal force generated by rotation, and the number and the position of the follow-up frames and the centrifugal sliding grinding tool can be flexibly adjusted according to the number and the position of the moving blade, so that the surface of the moving blade can be ground without dismantling the moving blade, the grinding efficiency is improved, the operation steps and the workload are reduced, and meanwhile, the mechanical abrasion generated when the moving blade is dismantled is avoided.
When the differential driving assembly works, the differential driving assembly drives the impeller to rotate, and the rotor blades on the impeller can generate air flows when the impeller rotates, so that the air flows can blow away the scraps and dust generated by grinding, and the accumulation of the scraps and the dust or the damage to the main shaft of the turbine rotor is avoided.
Drawings
FIG. 1 is a front view of a turbine blade sharpening device according to an embodiment of the present invention in use;
FIG. 2 is a left side view of a turbine blade sharpening device according to an embodiment of the present invention;
FIG. 3 is a rear view of a turbine blade grinding apparatus according to an embodiment of the present invention in use;
FIG. 4 is a perspective view of a turbine blade sharpening device according to an embodiment of the present invention in use;
FIG. 5 is an enlarged view of the portion I of FIG. 4;
FIG. 6 is an exploded view of a turbine blade sharpening device according to an embodiment of the present invention;
FIG. 7 is a perspective view of a follow-up centrifugal grinder for a turbine blade grinding device according to an embodiment of the present invention;
FIG. 8 is an enlarged view of the portion II of FIG. 7;
FIG. 9 is a front view of a follow-up centrifugal grinder for a turbine blade grinding device according to an embodiment of the present invention;
Fig. 10 is a cross-sectional view taken along A-A in fig. 9.
The device comprises a servo centrifugal grinding tool, a follow-up centrifugal grinding tool, 200, a rotating wheel sleeve, 300, a differential driving assembly, 400, a turbine rotor main shaft, 101, a follow-up frame, 102, a centrifugal sliding grinding tool, 103, a reset screw, 104, a first arc-shaped frame, 105, a frame connecting rod, 106, a second arc-shaped frame, 107, a movable grinding tool, 108, a grinding tool sinking groove, 109, a grinding tool sliding rod, 110, a grinding tool sliding block, 111, a grinding tool spring, 112, a wire brush, 113, a connecting rocker, 114, a rocker base, 115, a smooth shaft sleeve, 116, a threaded shaft sleeve, 117, a screw bevel gear, 201, a half-circle sleeve, 202, a self-fastening bolt, 203, a grinding tool connecting piece, 204, a screw support, 301, a servo motor, 302, a differential coupling, 303, a motor base, 304, a half-shaft bevel gear, 401, an impeller, 402 and a moving blade.
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention; all other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate orientation or positional relationships based on those shown in the drawings, merely to facilitate description of the invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
As shown in fig. 1,2,3,4 and 5, the present embodiment is mainly used for surface grinding of moving blades 402, the moving blades 402 are uniformly mounted on an impeller 401, the impeller 401 is mounted on a main shaft 400 of a turbine rotor, in order to improve grinding efficiency, the present embodiment can grind the moving blades 402 without disassembling them, and the specific structure of the present embodiment includes a follow-up centrifugal grinding tool 100, a rotating wheel sleeve 200 and a differential driving assembly 300, wherein the differential driving assembly 300 is connected with the impeller 401, and the differential driving assembly 300 drives the impeller 401 to rotate when working; the rotating wheel sleeve 200 is fixedly arranged on the impeller 401, and in order to ensure that the rotating wheel sleeve 200 can synchronously rotate when the impeller 401 rotates, the axis of the rotating wheel sleeve 200 is overlapped with the axis of the impeller 401, so that the rotating wheel sleeve 200 can concentrically rotate with the impeller 401; the follow-up centrifugal grinding tool 100 comprises a follow-up frame 101 and a centrifugal sliding grinding tool 102, the centrifugal sliding grinding tool 102 is arranged on the follow-up frame 101 in a sliding manner, the centrifugal sliding grinding tool 102 is used for grinding the surface of a moving blade 402, the follow-up frame 101 is fixedly connected to the rotating wheel sleeve 200, the moving blade 402 is located in the follow-up frame 101, meanwhile, the centrifugal sliding grinding tool 102 is attached to the surface of the moving blade 402, when the rotating wheel sleeve 200 rotates along with the impeller 401, the follow-up frame 101 synchronously rotates around the axis of the impeller 401, the centrifugal sliding grinding tool 102 on the follow-up frame 101 slides on the follow-up frame 101 under the action of centrifugal force, the sliding direction of the centrifugal sliding grinding tool 102 points to the edge of the impeller 401, and the centrifugal sliding grinding tool 102 generates relative displacement and friction with the surface of the moving blade 402 while sliding, so that the surface of the moving blade 402 is ground.
When the rotor is used, firstly, the condition of the moving blades 402 on the impeller 401 is checked, the moving blades 402 needing to be polished are determined, then the follow-up centrifugal grinding tool 100 is installed on the rotary wheel sleeve 200, the rotary wheel sleeve 200 is fixed on the impeller 401, each moving blade 402 needing to be polished is ensured to be positioned in the follow-up frame 101, and the surface of each moving blade 402 needing to be polished is attached to the centrifugal sliding grinding tool 102; subsequently, the differential drive assembly 300 is connected to the impeller 401, and the differential drive assembly 300 is started to start the grinding operation; the differential driving assembly 300 is started to drive the impeller 401 to rotate, the impeller 401 drives the rotating wheel sleeve 200 to coaxially rotate, meanwhile, the follow-up frame 101 and the centrifugal sliding mill 102 on the rotating wheel sleeve 200 also rotate around the axis of the impeller 401 along with the rotating wheel sleeve 200, the centrifugal sliding mill 102 is subjected to centrifugal force in the rotating process of the centrifugal sliding mill 102, and the centrifugal sliding mill 102 can slide on the follow-up frame 101 due to the fact that the centrifugal sliding mill 102 slides on the follow-up frame 101 towards the centrifugal force direction, and meanwhile, the surface of the moving blade 402 is polished in the moving process of the centrifugal sliding mill 102.
Since the follow-up frame 101 and the centrifugal sliding grinder 102 in this embodiment can rotate synchronously with the impeller 401 and the moving blade 402, the centrifugal sliding grinder 102 is driven by centrifugal force generated by rotation to move and grind on the surface of the moving blade 402, and the number and the positions of the follow-up frame 101 and the centrifugal sliding grinder 102 can be flexibly adjusted according to the number and the positions of the moving blade 402, so that the surface of the moving blade 402 can be ground without disassembling the moving blade 402, the grinding efficiency is improved, the operation steps and the workload are reduced, and meanwhile, the mechanical abrasion generated when the moving blade 402 is disassembled is avoided.
In this embodiment, when the speed driving assembly 300 drives the impeller 401 to rotate, the rotor blades 402 on the impeller 401 generate air flows when the impeller 401 rotates, and the air flows can blow away the chips and dust generated by grinding, so as to avoid accumulation of the chips and dust or damage to the main shaft 400 of the steam turbine rotor.
As shown in fig. 4, 5, 6 and 7, the differential drive assembly 300 of the present embodiment includes a servomotor 301 and a differential coupling 302, a motor base 303 is provided on the servomotor 301, the motor base 303 is connected to the ground or a stand, the differential coupling 302 is connected to an output shaft of the servomotor 301, meanwhile, the differential coupling 302 is also connected to an impeller 401, the differential coupling 302 is used for torque transmission between the impeller 401 and the servomotor 301, a bevel gear 304 is further provided on the differential coupling 302, and an angular velocity difference exists between the bevel gear 304 and the impeller 401 when rotating.
The following centrifugal grinding tool 100 of this embodiment further includes a reset screw 103, the reset screw 103 is used for solving the reset problem after the centrifugal sliding grinding tool 102 slides by centrifugal force, the reset screw 103 is provided with a screw bevel gear 117, the differential coupler 302 is provided with a half-shaft bevel gear 304, because the half-shaft bevel gear 304 rotates synchronously with the following centrifugal grinding tool 100, the half-shaft bevel gear 304 and the screw bevel gear 117 are relatively static, in order to make the half-shaft bevel gear 304 drive the screw bevel gear 117 to rotate, an angular velocity difference exists between the half-shaft bevel gear 304 and the impeller 401 by adjusting the differential coupler 302, the half-shaft bevel gear 304 and the screw bevel gear 117 are not relatively static any more, the half-shaft bevel gear 304 drives the screw bevel gear 117 to rotate by meshing with the screw bevel gear 117, because the teeth on the half-shaft bevel gear 304 are arranged intermittently, the screw bevel gear 117 meshes intermittently with the half-shaft bevel gear 304, and the screw bevel gear 117 rotates intermittently during the rotation of the half-shaft bevel gear 304.
Specifically, when the centrifugal sliding grinder 102 slides on the follow-up frame 101 under the centrifugal force, the reset screw 103 synchronously rotates along with the movement of the centrifugal sliding grinder 102, at this time, the screw bevel gear 117 and the half-shaft bevel gear 304 are not meshed, the reset screw 103 can freely rotate, and the centrifugal sliding grinder 102 can also slide on the follow-up frame 101; when the centrifugal sliding mill 102 slides to the farthest position along the centrifugal force direction, the half-shaft bevel gear 304 also rotates to the position meshed with the screw bevel gear 117, at this time, the rotation moment of the half-shaft bevel gear 304 is transmitted to the reset screw 103 through the screw bevel gear 117, the reset screw 103 drives the centrifugal sliding mill 102 to slide against the centrifugal force direction when rotating, until the centrifugal sliding mill 102 returns to the original position, the half-shaft bevel gear 304 is not meshed with the screw bevel gear 117 any more, and returns to the original state, so that the centrifugal sliding mill 102 can reciprocate on the follow-up frame 101 through the reset screw 103, and the grinding effect of the moving blade 402 is improved.
As shown in fig. 5, 7 and 10, the follower frame 101 in this embodiment includes a first arc frame 104 and a frame link 105, the frame link 105 is connected to the first arc frame 104, the centrifugal sliding grinding tool 102 includes a second arc frame 106 and a movable grinding tool 107, the second arc frame 106 slides on the frame link 105, the movable grinding tool 107 is movably disposed on the second arc frame 106, when the first arc frame 104 rotates with the rotating wheel sleeve 200, the second arc frame 106 slides on the frame link 105 due to centrifugal force, the sliding direction of the second arc frame 106 is the direction of the centrifugal force, the reciprocating movement of the second arc frame 106 and the movable grinding tool 107 is limited by the cooperation of the frame link 105 and the second arc frame 106, the movable grinding tool 107 reciprocates along with the second arc frame 106 on a fixed track, and the moving blade 402 is polished, so as to ensure the polishing effect.
The movable grinder 107 in this embodiment is movably disposed with respect to the second arc-shaped frame 106, and the angle of the movable grinder 107 can be adjusted according to different inclination angles of the moving blade 402, so that the movable grinder 107 always maintains contact with the surface of the moving blade 402.
As shown in fig. 7 and 9, the first arc-shaped frame 104 in this embodiment is provided with a smooth sleeve 115, the reset screw 103 passes through the smooth sleeve 115, and since the minimum inner diameter of the smooth sleeve 115 is larger than the maximum outer diameter of the reset screw 103, the reset screw 103 will not affect the smooth sleeve 115 when rotating, and the smooth sleeve 115 only provides a supporting function for the reset screw 103, thereby balancing the moment applied to the reset screw 103.
The second arc-shaped frame 106 in this embodiment is provided with a threaded shaft sleeve 116, the threaded shaft sleeve 116 is used for being matched with the reset screw 103, when the reset screw 103 rotates, the rotation moment is transmitted to the second arc-shaped frame 106 through the threaded shaft sleeve 116, when the second arc-shaped frame 106 slides, the centrifugal force received by the second arc-shaped frame 106 is transmitted to the reset screw 103 through the threaded shaft sleeve 116, and by arranging a smooth shaft sleeve 115 and the threaded shaft sleeve 116, the action of the reset screw 103 is related to the second arc-shaped frame 106, so that the influence of the action of the reset screw 103 on the structural stability of the first arc-shaped frame 104 is avoided.
As shown in fig. 8, 9 and 10, the second arc-shaped frame 106 in this embodiment is provided with a grinding tool slide bar 109, the grinding tool slide bar 109 is provided with a grinding tool slide block 110, the grinding tool slide block 110 is slidably connected with the grinding tool slide bar 109, the grinding tool slide block 110 is further provided with a grinding tool spring 111, the grinding tool spring 111 connects the grinding tool slide block 110 with the second arc-shaped frame 106, the movable grinding tool 107 is provided with a connecting rocker 113 and a rocker base 114, two ends of the rocker base 114 are respectively rotatably connected to the rocker base 114 and the grinding tool slide block 110, and the rocker base 114 can swing on the rocker base 114 and the grinding tool slide block 110.
When the movable grinding tool is used, the grinding tool spring 111 generates elasticity to push the grinding tool sliding block 110 to slide on the grinding tool sliding rod 109, and then drives the rocker base 114 to rotate, the movable grinding tool 107 is pushed to the surface of the moving blade 402, the elasticity of the grinding tool spring 111 acts on the movable grinding tool 107 through the connecting rocker 113, the movable grinding tool 107 is tightly pressed on the surface of the moving blade 402, the movable grinding tool 107 is ensured to be fully contacted with the surface of the moving blade 402, and the grinding efficiency of the movable grinding tool 107 on the surface of the moving blade 402 is improved.
As shown in fig. 8, in this embodiment, the second arc frame 106 is provided with the grinding tool sink 108, and the grinding tool slide bar 109, the grinding tool slide block 110 and the grinding tool spring 111 are all disposed inside the grinding tool sink 108, so that the grinding tool slide block 110 and the grinding tool spring 111 do not exceed the grinding tool sink 108 in the action process, and the grinding tool sink 108 protects the grinding tool slide bar 109, the grinding tool slide block 110 and the grinding tool spring 111, and avoids damaging the grinding tool slide bar 109, the grinding tool slide block 110 and the grinding tool spring 111 in the high-speed operation.
As shown in fig. 8 and 10, the movable grinding tool 107 provided in this embodiment is provided with the wire brush 112, the wire brush 112 is in pressure contact with the surface of the moving blade 402, the wire brush 112 scrapes the surface of the moving blade 402 while the movable grinding tool 107 moves on the moving blade 402, and the wire brush 112 can remove dirt and accumulated debris attached to the surface of the moving blade 402, so as to improve the grinding efficiency of the moving blade 402.
As shown in fig. 2 and 3, the rotating wheel sleeve 200 provided in this embodiment includes a half-ring sleeve 201 and a self-fastening bolt 202, the rotating wheel sleeve 200 is formed by combining symmetrical half-ring sleeves 201, the half-ring sleeves 201 are fixedly connected through the self-fastening bolt 202, the self-fastening bolt 202 can ensure firm connection between the half-ring sleeves 201, and a proper half-ring sleeve 201 is selected according to the curvature of the outer surface of the impeller 401, so that the curvature of the inner surface of the half-ring sleeve 201 is equal to the curvature of the outer surface of the impeller 401, the half-ring sleeve 201 is ensured to be tightly attached to the impeller 401, and the half-ring sleeve 201 is firmly connected to the impeller 401.
As shown in fig. 5 and 6, a fixed grinding tool connecting piece 203 and a screw supporting piece 204 are arranged on a half-turn hoop 201 in the embodiment, the grinding tool connecting piece 203 is used for connecting the follow-up frame 101, the screw supporting piece 204 is used for connecting the reset screw 103, the reset screw 103 is rotatably arranged on the screw supporting piece 204, the screw supporting piece 204 plays a supporting role on the reset screw 103, and the rotation wheel sleeve 200 drives the follow-up frame 101 and the reset screw 103 to synchronously rotate through the grinding tool connecting piece 203 and the screw supporting piece 204 when rotating.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
The invention and its embodiments have been described above with no limitation, and the actual construction is not limited to the embodiments of the invention as shown in the drawings. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present invention.
Claims (6)
1. A turbine blade coping device for carrying out surface coping on a turbine rotor main shaft (400) and a moving blade (402) on an impeller (401), characterized in that: comprises a follow-up centrifugal grinding tool (100), a rotary wheel sleeve (200) and a differential driving component (300), wherein,
The rotating wheel sleeve (200) is fixedly arranged on the impeller (401), the differential driving assembly (300) is connected with the impeller (401), the differential driving assembly (300) is used for driving the impeller (401) to rotate, and the rotating wheel sleeve (200) is synchronously rotated along with the impeller (401);
The follow-up centrifugal grinding tool (100) comprises a follow-up frame (101) and a centrifugal sliding grinding tool (102), wherein the follow-up frame (101) is connected to a rotating wheel sleeve (200), and the follow-up frame (101) is configured to synchronously rotate along with the impeller (401); the follow-up frame (101) is arranged at a position close to the moving blade (402), the moving blade (402) is arranged in the follow-up frame (101), the centrifugal sliding grinding tool (102) is arranged on the follow-up frame (101) in a sliding mode, the centrifugal sliding grinding tool (102) is attached to the surface of the moving blade (402), and the centrifugal sliding grinding tool (102) is used for grinding the surface of the moving blade (402); the centrifugal sliding mill (102) is configured such that, when the impeller (401) rotates, the centrifugal sliding mill (102) is subjected to centrifugal force to slide on a follow-up frame (101);
The follow-up centrifugal grinding tool (100) further comprises a reset screw (103), the reset screw (103) is rotationally connected with the follow-up frame (101), a screw bevel gear (117) is arranged on the reset screw (103), the reset screw (103) is connected with the centrifugal sliding grinding tool (102), and the reset screw (103) is configured to drive the centrifugal sliding grinding tool (102) to slide on the follow-up frame (101) when rotating;
the differential drive assembly (300) comprises a servo motor (301) and a differential coupler (302), two ends of the differential coupler (302) are respectively connected to an impeller (401) and the servo motor (301), a half-shaft bevel gear (304) is further arranged on the differential coupler (302), the half-shaft bevel gear (304) is intermittently meshed with the screw bevel gear (117), and an angular speed difference exists between the half-shaft bevel gear (304) and the impeller (401) when the half-shaft bevel gear rotates;
The follow-up frame (101) comprises a first arc-shaped frame (104), a frame connecting rod (105) is arranged on the first arc-shaped frame (104), the centrifugal sliding grinding tool (102) comprises a second arc-shaped frame (106) and a movable grinding tool (107), the movable grinding tool (107) is movably arranged on the second arc-shaped frame (106), the second arc-shaped frame (106) is slidably connected to the frame connecting rod (105), and the movable grinding tool (107) is used for grinding the moving blade (402);
A smooth shaft sleeve (115) is arranged on the first arc-shaped frame (104), the minimum inner diameter of the smooth shaft sleeve (115) is larger than the maximum outer diameter of the reset screw (103), and the reset screw (103) penetrates through the smooth shaft sleeve (115); the second arc-shaped frame (106) is provided with a fixed threaded shaft sleeve (116), the threaded shaft sleeve (116) penetrates through the reset screw (103) and is meshed with the reset screw (103), the rotation of the reset screw (103) is linked with the sliding of the second arc-shaped frame (106) on the frame connecting rod (105), the reset screw (103) is configured to drive the second arc-shaped frame (106) to slide when rotating, and the second arc-shaped frame (106) is configured to drive the reset screw (103) to rotate when sliding on the frame connecting rod (105).
2. The turbine blade sharpening device of claim 1, wherein: be equipped with grinding apparatus slide bar (109) on second arc frame (106), be equipped with sliding connection's grinding apparatus slider (110) on grinding apparatus slide bar (109), be equipped with grinding apparatus spring (111) on grinding apparatus slider (110), grinding apparatus spring (111) both ends are connected respectively on grinding apparatus slider (110) and second arc frame (106).
3. The turbine blade sharpening device of claim 2, wherein: the grinding tool sinking groove (108) is formed in the second arc-shaped frame (106), the grinding tool sliding rod (109), the grinding tool sliding block (110) and the grinding tool spring (111) are arranged inside the grinding tool sinking groove (108), and the grinding tool sliding rod (109), the grinding tool sliding block (110) and the grinding tool spring (111) do not exceed the plane where the notch of the grinding tool sinking groove (108) is located.
4. The turbine blade sharpening device of claim 1, wherein: the movable grinding tool (107) is provided with a fixed wire brush (112), and the wire brush (112) is in pressure contact with the surface of the moving blade (402).
5. The turbine blade sharpening device of claim 1, wherein: the rotating wheel sleeve (200) comprises half-circle hoops (201) and self-fastening bolts (202), the rotating wheel sleeve (200) is formed by combining symmetrical half-circle hoops (201), the half-circle hoops (201) are fixedly connected through the self-fastening bolts (202), and the curvature of the inner surface of the half-circle hoops (201) is equal to the curvature of the outer surface of the impeller (401).
6. The turbine blade sharpening device of claim 5, wherein: the grinding tool is characterized in that a grinding tool connecting piece (203) and a screw supporting piece (204) which are fixedly connected are arranged on the half-circle hoop (201), the follow-up frame (101) is fixedly connected to the grinding tool connecting piece (203), the reset screw (103) is rotatably arranged on the screw supporting piece (204), and the screw supporting piece (204) supports the reset screw (103).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410726944.0A CN118288163B (en) | 2024-06-06 | 2024-06-06 | Turbine blade coping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410726944.0A CN118288163B (en) | 2024-06-06 | 2024-06-06 | Turbine blade coping device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN118288163A CN118288163A (en) | 2024-07-05 |
| CN118288163B true CN118288163B (en) | 2024-09-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410726944.0A Active CN118288163B (en) | 2024-06-06 | 2024-06-06 | Turbine blade coping device |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB590788A (en) * | 1944-07-14 | 1947-07-29 | Charles Benjamin Devlieg | Impeller vane milling machine |
| JP2000071158A (en) * | 1998-08-28 | 2000-03-07 | Ishikawajima Harima Heavy Ind Co Ltd | Edge finishing device for wing |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5148635A (en) * | 1989-08-22 | 1992-09-22 | Arc Plan, Inc. | Method and apparatus hydraulic turbine repair |
| CN106112752B (en) * | 2016-06-29 | 2017-12-26 | 重庆大学 | Suitable for the sbrasive belt grinding center of blisk holotype face polishing processing |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB590788A (en) * | 1944-07-14 | 1947-07-29 | Charles Benjamin Devlieg | Impeller vane milling machine |
| JP2000071158A (en) * | 1998-08-28 | 2000-03-07 | Ishikawajima Harima Heavy Ind Co Ltd | Edge finishing device for wing |
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| CN118288163A (en) | 2024-07-05 |
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