CN211361863U - Main steam grinding machine - Google Patents
Main steam grinding machine Download PDFInfo
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- CN211361863U CN211361863U CN201922298667.5U CN201922298667U CN211361863U CN 211361863 U CN211361863 U CN 211361863U CN 201922298667 U CN201922298667 U CN 201922298667U CN 211361863 U CN211361863 U CN 211361863U
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Abstract
The utility model discloses a main vapour grinds machine, including gear motor, transmission shaft, screw sliding sleeve, feeding screw, annular drive nut, location mounting, adjustable locating component, fixed cover and main vapour abrasive disc, the screw sliding sleeve is located fixed sheathe in and is fed, the transmission shaft is rotatable to be located in screw sliding sleeve and the fixed cover, main vapour abrasive disc locates on the transmission shaft, feed the screw cover and connect and locate on the screw sliding sleeve, location mounting slidable cup joints and locates on the feeding screw and slidable cup joints and locates on screw sliding sleeve and the fixed cover, adjustable locating component locates on the location mounting, annular drive nut is rotatable to be located on the location mounting and locate on the adjustable locating component. The utility model relates to a valve overhauls technical field, specifically is to provide an utilize adjustable interval's location support piece block to support and to satisfy the main vapour that grinds the steam turbine valve location of different bores along the department at the valve mouth and grind machine.
Description
Technical Field
The utility model relates to a valve overhauls technical field, specifically indicates a machine is ground to main vapour.
Background
The steam turbine of the power plant is a power core part of the whole power plant, the large steam turbine valve is a control part of the steam turbine and comprises a high-pressure main steam valve, a high-pressure regulating steam valve and a medium-pressure combined steam valve, the steam turbine valve is easy to leak in the valve after running for a period of time, the internal leakage threatens the steam turbine most greatly, overspeed is caused, even a rotor is damaged, and other serious accidents are caused, and when the valve is stopped for valve maintenance, the defects of pits, scratches and the like are often found at the sealing part of a valve seat and a valve core of the steam turbine valve. The traditional treatment method is to grind by adopting grinding paste, and in a power plant with strict requirements on the construction period, the traditional treatment method becomes stumbling stones which restrict the construction period, so that a new tool and a new process are urgently needed on site, and the overhaul work of the steam turbine valve can be quickly completed with high quality.
SUMMERY OF THE UTILITY MODEL
To the above situation, for overcoming prior art's defect, the utility model provides an utilize adjustable interval's location support piece block to support and to satisfy the main vapour mill machine of grinding to the steam turbine valve location of different bores along the department at the valve mouth.
The utility model adopts the following technical scheme: the utility model relates to a main steam grinding machine, which comprises a speed reducing motor, a transmission shaft, a threaded sliding sleeve, a feed screw nut, an annular driving nut, a positioning fixing piece, an adjustable positioning component, a driving slide block, a fixing sleeve and a main steam grinding disc, the threaded sliding sleeve is arranged on the fixed sleeve and communicated with the fixed sleeve, the transmission shaft is rotatably arranged in the threaded sliding sleeve and the fixed sleeve, the main steam grinding disc is rotatably arranged at the bottom of the fixed sleeve and is arranged on the transmission shaft, the speed reducing motor is arranged at the top of the threaded sliding sleeve, the transmission shaft is connected with the output end of the speed reducing motor, the feeding screw is sleeved on the threaded sliding sleeve and meshed with the threaded sliding sleeve, the positioning fixing piece is sleeved on the feeding screw in a sliding way and sleeved on the threaded sliding sleeve and the fixing sleeve in a sliding way, the adjustable positioning assembly is arranged on the positioning fixing piece, and the annular driving nut is rotatably arranged on the positioning fixing piece and arranged on the adjustable positioning assembly; the adjustable positioning component comprises a limiting rod, a positioning driving piece, a positioning supporting piece, a driving lead screw and a transmission gear, wherein a lead screw placing groove is arranged on the positioning fixing piece, the driving lead screw can be rotatably arranged in the lead screw placing groove, the driving slide block can be slidably arranged in the lead screw placing groove, the driving lead screw penetrates through the driving slide block and is meshed with the driving slide block, the positioning driving piece is hinged on the driving slide block, the positioning supporting piece is hinged on the positioning driving piece, one end of the limiting rod is hinged on the positioning fixing piece, the other end of the limiting rod is hinged on the positioning supporting piece, the limiting rod plays a limiting role on the positioning supporting piece, the positioning fixing piece is provided with a nut rotating groove, the nut rotating groove is close to the lead screw placing groove, the driving lead screw can be rotatably arranged in the nut rotating groove, the transmission gear is, the annular driving nut is rotatably arranged in the nut rotating groove and meshed with the transmission gear, the driving screw is driven by the rotating annular driving nut to rotate, the driving screw drives the driving slider to move up and down on the driving screw, and the driving slider pushes the positioning support piece to move close to and away from the driving slider through the positioning driving piece, so that the distance between the positioning support piece and the positioning fixing piece is adjusted to adapt to steam turbine valves with different calibers.
Further, the nut rotating groove is annularly arranged along the circumferential direction of the positioning fixing piece.
Furthermore, a plurality of groups are uniformly arranged on the screw containing grooves at intervals along the circumferential direction of the positioning fixing piece, and the number of the adjustable positioning assemblies is equal to that of the screw containing grooves and corresponds to the screw containing grooves one to one.
Furthermore, the positioning support piece is arranged in an inverted L-shaped structure, and the positioning support piece is clamped at the opening edge of the valve to realize the fixed support of the main steam grinding machine.
Furthermore, be equipped with spacing spring between location mounting and the feed screw, spacing spring one end is located on the feed screw, on the location mounting was located to the other end of spacing spring, location support piece contacted valve mouth edge back, can realize the inseparable laminating of location support piece and valve mouth edge through feeding screw rotary extrusion spacing spring.
Furthermore, a feeding handle is arranged on the feeding screw nut, and the feeding screw nut is convenient to rotate and apply force through the feeding handle.
Furthermore, a positioning handle is arranged on the annular driving nut, and the annular driving nut is convenient to rotate and apply force through the positioning handle.
Adopt above-mentioned structure the utility model discloses the beneficial effect who gains as follows: according to the scheme, the main steam grinding machine realizes the fixed support of the main steam grinding machine by adjusting the distance between the positioning support pieces to enable the positioning support pieces to be clamped at the opening edges of the valves, and can be adapted to the maintenance and processing requirements of steam turbine valves with different calibers; the force application difficulty in rotating the feeding nut is reduced through the feeding handle; the force application difficulty when the annular driving nut is rotated is reduced through the positioning handle.
Drawings
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 embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the overall structure of a main steam grinder of the present invention;
FIG. 2 is a sectional view of a main steam grinder of the present invention;
fig. 3 is a partial enlarged view of a portion a of the main steam grinder of the present invention.
The grinding device comprises a speed reducing motor 1, a speed reducing motor 2, a transmission shaft 3, a threaded sliding sleeve 4, a feeding screw nut 5, an annular driving nut 6, a positioning fixing piece 7, an adjustable positioning assembly 8, a fixing sleeve 9, a main steam grinding disc 10, a limiting rod 11, a positioning driving piece 12, a positioning supporting piece 13, a driving lead screw 14, a transmission gear 15, a lead screw placing groove 16, a nut rotating groove 17, a limiting spring 18, a feeding handle 19, a positioning handle 20 and a driving sliding block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
As shown in fig. 1-2, the main steam grinder of the present invention comprises a speed reduction motor 1, a transmission shaft 2, a threaded sliding sleeve 3, a feeding screw 4, an annular driving nut 5, a positioning fixture 6, an adjustable positioning assembly 7, a driving slider 20, a fixing sleeve 8 and a main steam grinding disk 9, wherein the threaded sliding sleeve 3 is disposed on the fixing sleeve 8 and communicated with the same, the transmission shaft 2 is rotatably disposed in the threaded sliding sleeve 3 and the fixing sleeve 8, the main steam grinding disk 9 is rotatably disposed at the bottom of the fixing sleeve 8 and disposed on the transmission shaft 2, the speed reduction motor 1 is disposed at the top of the threaded sliding sleeve 3, the transmission shaft 2 is connected with the output end of the speed reduction motor 1, the feeding screw 4 is sleeved on the threaded sliding sleeve 3 and engaged with each other, the positioning fixture 6 is slidably sleeved on the feeding screw 4 and slidably sleeved on the threaded sliding sleeve 3 and the fixing sleeve, the adjustable positioning component 7 is arranged on the positioning fixing piece 6, and the annular driving nut 5 is rotatably arranged on the positioning fixing piece 6 and arranged on the adjustable positioning component 7; the adjustable positioning assembly 7 comprises a limiting rod 10, a driving slider 20, a positioning driving member 11, a positioning supporting member 12, a driving lead screw 13 and a transmission gear 14, wherein a lead screw placing groove 15 is arranged on the positioning fixing member 6, the driving lead screw 13 is rotatably arranged in the lead screw placing groove 15, the driving slider 20 is slidably arranged in the lead screw placing groove 15, the driving lead screw 13 penetrates through the driving slider 20 and is meshed with the driving slider 20, the positioning driving member 11 is hinged on the driving slider 20, the positioning supporting member 12 is hinged on the positioning driving member 11, one end of the limiting rod 10 is hinged on the positioning fixing member 6, the other end of the limiting rod 10 is hinged on the positioning supporting member 12, the positioning fixing member 6 is provided with a nut rotating groove 16, the nut rotating groove 16 is close to the lead screw placing groove 15, and the driving lead screw 13 is rotatably arranged in the nut rotating groove, the transmission gear 14 is sleeved on the driving screw 13 and arranged in the nut rotating groove 16, and the annular driving nut 5 is rotatably arranged in the nut rotating groove 16 and meshed with the transmission gear 14.
The nut rotating grooves 16 are annularly arranged in the circumferential direction of the positioning and fixing member 6. The lead screw placing grooves 15 are evenly provided with a plurality of groups at intervals along the circumferential direction of the positioning fixing piece 6, and the number of the adjustable positioning assemblies 7 is equal to that of the lead screw placing grooves 15 and corresponds to the number of the adjustable positioning assemblies 15 one by one. The positioning support member 12 is arranged in an inverted L-shaped structure. A limiting spring 17 is arranged between the positioning and fixing piece 6 and the feeding screw nut 4, one end of the limiting spring 17 is arranged on the feeding screw nut 4, and the other end of the limiting spring 17 is arranged on the positioning and fixing piece 6. The feeding screw nut 4 is provided with a feeding handle 18. And a positioning handle 19 is arranged on the annular driving nut 5.
When the main steam grinding disc 9 is in contact with and arranged on a surface to be ground, when the feeding handle 18 is rotated, the feeding screw nut 4 rotates to drive the adjustable positioning assembly 7 on the positioning fixing piece 6 to move to the position of the valve opening edge of the steam turbine, then the annular driving nut 5 is rotated by applying force through the positioning handle 19, the annular driving nut 5 drives the driving screw 13 to rotate through the transmission gear 14, the driving screw 13 drives the driving slider 20 to move downwards close to the driving screw 13, the driving slider 20 pushes the positioning support piece 12 to be clamped at the valve opening edge through the positioning driving piece 11, and the rotating feeding screw nut 4 rotates to extrude the limiting spring 17 to further increase the attachment of the positioning support piece 12 and the valve opening edge, and then the driving speed reduction motor 1 rotates to drive the main steam grinding disc 9 to rotate and grind through the transmission shaft 2.
It is noted that, herein, relational terms such as first and second, and the like may be 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. Also, 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 appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A main steam grinder is characterized in that: comprises a speed reducing motor, a transmission shaft, a threaded sliding sleeve, a feeding nut, an annular driving nut, a positioning fixing piece, an adjustable positioning component, a driving sliding block, a fixing sleeve and a main steam grinding disc, the threaded sliding sleeve is arranged on the fixed sleeve and communicated with the fixed sleeve, the transmission shaft is rotatably arranged in the threaded sliding sleeve and the fixed sleeve, the main steam grinding disc is rotatably arranged at the bottom of the fixed sleeve and is arranged on the transmission shaft, the speed reducing motor is arranged at the top of the threaded sliding sleeve, the transmission shaft is connected with the output end of the speed reducing motor, the feeding screw is sleeved on the threaded sliding sleeve and meshed with the threaded sliding sleeve, the positioning fixing piece is sleeved on the feeding screw in a sliding way and sleeved on the threaded sliding sleeve and the fixing sleeve in a sliding way, the adjustable positioning assembly is arranged on the positioning fixing piece, and the annular driving nut is rotatably arranged on the positioning fixing piece and arranged on the adjustable positioning assembly; the adjustable positioning component comprises a limiting rod, a positioning driving piece, a positioning supporting piece, a driving screw rod and a transmission gear, the positioning fixing piece is provided with a screw rod placing groove, the driving screw rod is rotatably arranged in the screw rod placing groove, the driving slide block can be arranged in the lead screw placing groove in a sliding way, the driving lead screw penetrates through the driving slide block and is meshed with the driving slide block, the positioning driving piece is hinged on the driving slide block, the positioning supporting piece is hinged on the positioning driving piece, one end of the limiting rod is hinged on the positioning fixing piece, the other end of the limiting rod is hinged on the positioning support piece, the positioning fixing piece is provided with a nut rotating groove which is close to the screw rod placing groove, the driving screw rod is rotatably arranged in the nut rotating groove, the drive gear is sleeved on the drive screw rod and arranged in the nut rotating groove, and the annular drive nut is rotatably arranged in the nut rotating groove and meshed with the drive gear.
2. A main steam grinding mill according to claim 1, characterized in that: the nut rotating groove is annularly arranged along the circumferential direction of the positioning fixing piece.
3. A main steam grinding mill according to claim 2, characterized in that: the lead screw placing groove is provided with a plurality of groups at even intervals along the circumferential direction of the positioning fixing piece, and the number of the adjustable positioning assemblies is equal to that of the lead screw placing grooves and corresponds to the lead screw placing grooves one by one.
4. A main steam grinding mill according to claim 1, characterized in that: the positioning support piece is arranged in an inverted L-shaped structure.
5. A main steam mill according to claim 3, characterised in that: and a limiting spring is arranged between the positioning fixing piece and the feeding screw nut, one end of the limiting spring is arranged on the feeding screw nut, and the other end of the limiting spring is arranged on the positioning fixing piece.
6. A main steam grinding mill according to claim 5, characterized in that: and a feeding handle is arranged on the feeding screw nut.
7. A main steam grinding mill according to claim 1, characterized in that: and a positioning handle is arranged on the annular driving nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922298667.5U CN211361863U (en) | 2019-12-19 | 2019-12-19 | Main steam grinding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922298667.5U CN211361863U (en) | 2019-12-19 | 2019-12-19 | Main steam grinding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211361863U true CN211361863U (en) | 2020-08-28 |
Family
ID=72165782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922298667.5U Active CN211361863U (en) | 2019-12-19 | 2019-12-19 | Main steam grinding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211361863U (en) |
-
2019
- 2019-12-19 CN CN201922298667.5U patent/CN211361863U/en active Active
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