CN114309716A - Rotary lifting mechanism for valve machining and machining device thereof - Google Patents
Rotary lifting mechanism for valve machining and machining device thereof Download PDFInfo
- Publication number
- CN114309716A CN114309716A CN202210096029.9A CN202210096029A CN114309716A CN 114309716 A CN114309716 A CN 114309716A CN 202210096029 A CN202210096029 A CN 202210096029A CN 114309716 A CN114309716 A CN 114309716A
- Authority
- CN
- China
- Prior art keywords
- assembly
- valve
- gear
- lead screw
- lifting mechanism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Mechanically-Actuated Valves (AREA)
Abstract
The invention provides a rotary lifting mechanism for valve processing, which comprises: the valve machining device comprises a transmission shaft assembly, an electric main shaft, a lifting assembly and a driving assembly, wherein the transmission shaft assembly is provided with an installation end for installing a valve machining tool; the electric main shaft is fixedly connected with the transmission shaft assembly, so that the transmission shaft assembly can perform rotary motion around the axis of the electric main shaft; the lifting assembly is connected with the transmission shaft assembly, so that the transmission shaft assembly can perform lifting motion along the axial direction of the electric spindle; the power output end of the driving assembly is connected with the lifting assembly and can provide driving force for the lifting assembly. The rotary lifting mechanism for valve processing integrates the rotary lifting structure into a whole, has compact structure, small size and high precision, and can meet the processing operations of cutting a valve seat of a small-space valve body and the like.
Description
Technical Field
The invention relates to the technical field of valve on-site machining, in particular to a rotary lifting mechanism for valve machining and a machining device thereof.
Background
The large number of valves used in nuclear power plants are welded to the pipe and the valve seats of such valves are severely damaged, usually by cutting the damaged valve from the pipe and then welding a new valve. Because the number of the replaced valves is large, the replacement cost is high, if some high-value valves are repaired on line, a large amount of capital and time can be saved, the damage of cutting to the pipeline is reduced, and the number of expensive whole valve spare parts is reduced.
For the online maintenance of horizontal valves such as safety valves, stop valves and the like, the valve seats can be replaced or the sealing surfaces can be repaired by cutting. At present, some valve online repair tools exist in the market, but the following defects exist:
(1) the valve online repair tool is complex in structure and large in size. The valve size of the horizontal valve seats such as the safety valve and the stop valve is small (not exceeding DN200), the cutting space is small, in the cutting process, the accuracy of the groove position for welding seam cutting and follow-up welding is guaranteed by high machining precision, and the valve seat of the valve body in the small space cannot be cut by the valve on-line repairing tool with the large size.
(2) The number of driving shafts of the valve on-line repairing tool is small. Although plane or inner hole can be bored or ground, the processing of inclined plane or other complex curved surface can not be carried out.
(3) The valve on-line repair tool has low automation degree. Under the conditions that the application environment of the valve has a certain radiation dose and operators are not suitable for operating on site for a long time, the requirements of remote control and operation cannot be met.
Disclosure of Invention
The invention aims to solve the technical problems that a rotary lifting mechanism for valve machining and a machining device thereof are provided, and the problems that in the prior art, a valve on-line repairing tool is complex in structure, large in size, few in driving shaft, incapable of machining an inclined plane or a curved surface and low in automation degree are solved.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a rotary lift mechanism for valve machining, comprising:
a driveshaft assembly having a mounting end to which a valve machining tool is mounted;
the electric main shaft is fixedly connected with the transmission shaft assembly, so that the transmission shaft assembly can perform rotary motion around the axis of the electric main shaft;
the lifting assembly is connected with the transmission shaft assembly, so that the transmission shaft assembly can perform lifting motion along the axial direction of the electric spindle;
and the power output end of the driving assembly is connected with the lifting assembly and can provide driving force for the lifting assembly.
Preferably, the transmission shaft assembly comprises a lead screw spline shaft, a spline nut and a lead screw nut; the spline nut is arranged on a spline groove of the lead screw spline shaft; the screw nut is arranged on the screw thread of the screw spline shaft; the mounting end is positioned at the end part of the lead screw spline shaft.
Preferably, the driveshaft assembly further comprises a support bearing; the support bearing is arranged around the periphery of the screw nut.
Preferably, the transmission shaft assembly is connected with the electric spindle through a fixed seat;
the fixed seat is fixed on the electric spindle; the inside of the fixed seat is provided with a cavity for accommodating the supporting bearing, and the lead screw nut is fixed on the fixed seat through the supporting bearing;
the spline nut is fixed on the electric spindle, so that the lead screw spline shaft is coaxial with the electric spindle.
Preferably, a fixing plate is arranged on the outer wall of the fixing seat, and the driving assembly is fixed on the fixing seat through the fixing plate.
Preferably, the lifting assembly comprises a first gear, a second gear; the first gear is meshed with the second gear, and the second gear is fixed with the lead screw nut; when the first gear rotates, the second gear drives the lead screw nut to rotate, so that the lead screw nut generates relative displacement relative to the lead screw spline shaft.
Preferably, the power output end of the drive assembly is connected with the first gear.
Preferably, the rotary lifting mechanism for valve machining further comprises a protective cover, and the protective cover is sleeved outside the first gear and the second gear.
Preferably, the rotary lifting mechanism for valve machining further comprises a slip ring assembly; the slip ring assembly is fixed on the protective cover.
The invention also provides a processing device for valve processing, which comprises the rotary lifting mechanism for valve processing.
The scheme of the invention at least comprises the following beneficial effects:
the invention discloses a rotary lifting mechanism for valve machining. The rotary lifting structure is integrated, the structure is compact, the size is small, the precision is high, and machining operations such as valve seat cutting of a small-space valve body can be met. The linkage shaft can be further expanded at the mounting end of the transmission shaft assembly, the slip ring assembly is convenient for cable connection of the expansion linkage shaft, so that multi-shaft numerical control linkage of three shafts, four shafts and the like can be realized, and the processing requirement and the remote control requirement of a complex curved surface are met. In addition, all the driving power devices of the rotary lifting mechanism for valve machining can be arranged outside the valve, and radiation protection is facilitated.
Drawings
FIG. 1 is a schematic structural view of a rotary lifting mechanism for valve machining according to the present invention;
FIG. 2 is a partial schematic view of position A of FIG. 1;
FIG. 3 is a schematic structural view of a slip ring assembly of the rotary lift mechanism for valve machining of the present invention;
FIG. 4 is a schematic structural view of a machining apparatus for valve machining according to the present invention;
wherein, 1, a transmission shaft assembly; 10. an installation end; 11. a lead screw spline shaft; 12. a spline mother; 13. a lead screw nut; 14. a support bearing; 2. an electric spindle; 3. a lifting assembly; 31. a first gear; 32. a second gear; 4. a drive assembly; 5. a fixed seat; 6. a fixing plate; 7. a protective cover; 8. a slip ring assembly; 81. a rotating part; 82. a stationary portion; 83. a deflector rod; 91. a sliding table; 92. boring a cutter; 93. an electric motor.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Example 1
As shown in fig. 1 to 3, an embodiment of the present invention provides a rotary lifting mechanism for valve machining, including: the device comprises a transmission shaft assembly 1, an electric spindle 2, a lifting assembly 3 and a driving assembly 4.
The transmission shaft assembly 1 is provided with a mounting end 10 for mounting a valve machining tool;
the electric spindle 2 is fixedly connected with the transmission shaft assembly 1, so that the transmission shaft assembly 1 can perform rotary motion around the axis of the electric spindle 2;
the lifting assembly 3 is connected with the transmission shaft assembly 1, so that the transmission shaft assembly 1 can perform lifting motion along the axial direction of the electric spindle 2;
the power output end of the driving component 4 is connected with the lifting component 3 and can provide driving force for the lifting component 3. The driving component 4 may be any device that can provide driving force and can achieve the above functions in the prior art. In this embodiment, a servo motor assembly may be specifically adopted, and the servo motor assembly at least includes a servo motor.
For the purpose of realizing the present invention, the design manner of the transmission shaft assembly 1 is not exclusive, and in this embodiment, the transmission shaft assembly 1 includes a lead screw spline shaft 11, a spline nut 12, and a lead screw nut 13; the spline nut 12 is arranged on a spline groove of the lead screw spline shaft 11; the screw nut 13 is mounted on the screw thread of the screw spline shaft 11; the mounting end 10 is located at the end of the screw spline shaft 11.
As a preferred implementation of the present embodiment, the drive shaft assembly 1 further comprises a support bearing 14; the support bearing 14 is arranged around the outer circumference of the screw nut 13.
It should be noted that, the fixed connection mode between the transmission shaft assembly 1 and the electric spindle 2 is not exclusive, and in this embodiment, the transmission shaft assembly 1 is fixedly connected to the electric spindle 2 through a fixing seat 5; the fixed seat 5 is fixed on the electric spindle 2; the fixed seat 5 is internally provided with a cavity for accommodating the support bearing 14, and the lead screw nut 13 is fixed on the fixed seat 5 through the support bearing 14; the spline nut 12 is fixed on the electric spindle 2, so that the lead screw spline shaft 11 is coaxial with the electric spindle 2. The spline nut 12 on the screw spline shaft 11 is fixed with the electric spindle 2, the screw nut 13 is fixed with the fixed seat 5, and the two parts are fixed, so that the screw spline shaft 11 penetrating through the electric spindle 2 and the electric spindle 2 are coaxial, the two parts are fixed, the structure is simple and compact, the occupied space is small, and the consistency and the stability are good in the process of transmission and rotation of the screw spline shaft 11 and the electric spindle 2.
For example, in the present embodiment, as shown in fig. 1, the fixing base 5 is disposed at the upper rotating shaft of the electric spindle 2, the screw nut 13 is located at the upper rotating shaft of the electric spindle 2, and the lower rotating shaft of the electric spindle 2 is fixed to the spline nut 12. When the electric spindle 2 rotates, the spline 12 at the lower rotating shaft of the electric spindle 2 rotates to drive the lead screw spline shaft 11 to rotate, and meanwhile, the fixing seat 5 at the upper rotating shaft of the electric spindle 2 also rotates to drive the lead screw nut 13 connected with the fixing seat 5 to rotate, so that the lead screw nut 13 and the lead screw spline shaft 11 do not generate relative displacement, and the synchronous rotation of the lead screw spline shaft 11, the spline nut 12 and the lead screw nut 13 with the axis of the electric spindle 2 as a shaft is realized.
In order to fix the driving component 4, a fixing plate 6 is disposed on an outer wall of the fixing seat 5, and the driving component 4 is fixed on the fixing seat 5 through the fixing plate 6.
As a preferred implementation manner of the present embodiment, the lifting assembly 3 includes a first gear 31, a second gear 32; the first gear 31 is meshed with the second gear 32, and the second gear 32 is fixed with the lead screw nut 13; when the first gear 31 rotates, the second gear 32 drives the lead screw nut 13 to rotate, so that the lead screw nut 13 generates relative displacement with respect to the lead screw spline shaft 11, and the lead screw spline shaft 11 performs lifting motion. The power output end of the driving assembly 4 is connected with the first gear 31, and the driving assembly 4 provides power for the first gear 31.
In order to avoid the object from being involved in the lifting component 3, the rotary lifting mechanism for valve processing further comprises a protective cover 7, and the protective cover 7 is sleeved outside the first gear 31 and the second gear 32. The protection casing 7 is fixed in on the fixing base 5, the setting of protection casing 7 can be right first gear 31 the second gear 32 protects, and objects such as guarantee residue, piece, dust can not fall into gear drive parts.
In order to facilitate the cable connection of the linkage shaft expanded by the rotary lifting mechanism for valve processing, the rotary lifting mechanism for valve processing further comprises a slip ring assembly 8; the slip ring assembly 8 is fixed to the shield 7. The slip ring assembly 8 may be an electrical component communicating with a rotating body, conveying energy and signals, such as an electrical slip ring, a fluid slip ring, an optical slip ring, etc., which are conventional in the art.
As a preferred implementation manner of this embodiment, as shown in fig. 3, the slip ring assembly 8 includes a rotating portion 81, a stationary portion 82, and a shift lever 83. The rotating portion 81 is fixedly connected to the protecting cover 7, the stationary portion 82 is connectable to a fixed structure of a device, including but not limited to an interface of an energy source or a signal, and the shift lever 83 is connected to the stationary portion 82, extends along the length direction of the transmission shaft assembly 1, and is located outside the driving assembly 4. The slip ring component 8 is convenient for realizing multi-axis numerical control linkage of three axes, four axes and the like, and meets the requirement of remote control, so that when power and data signals are transmitted from a fixed position to a rotating part, the winding of a cable in the high-speed continuous rotation process can be avoided. The shift lever 83 is connected to the stationary portion 82, and does not rotate with the rotating component driven by the electric spindle 2, and the cable can be prevented from being wound around the driving component 4 and other components under the driving of the rotating component, so as to prevent damage to the electrical components, outside the driving component 4.
The working process of the rotary lifting mechanism for valve machining is as follows:
an operator installs a valve machining tool at the installation end 10 of the lead screw spline shaft 11 according to the valve machining requirement. When the electric spindle 2 rotates, the spline nut 12 on the electric spindle 2 rotates to drive the lead screw spline shaft 11 to rotate, and at the same time, the fixing seat 5 on the electric spindle 2 also rotates to drive the lead screw nut 13 to rotate, so that the lead screw nut 13 and the lead screw spline shaft 11 do not generate relative displacement, but the lead screw spline shaft 11, the spline nut 12 and the lead screw nut 13 rotate synchronously with the axis of the electric spindle 2 as a rotating shaft, thereby realizing the rotation of the mounting end 10 of the lead screw spline shaft 11. When the driving assembly 4 is started, the first gear 31 rotates to drive the second gear 32 and the lead screw nut 13 fixed thereto to rotate, so that the lead screw nut 13 generates relative displacement with respect to the lead screw spline shaft 11, thereby lifting the mounting end 10 of the lead screw spline shaft 11.
It can be seen that, the rotary lifting mechanism for valve processing described in this embodiment can realize rotation and lifting only through the lead screw spline shaft 11, the spline nut 12, the lead screw nut 13, the support bearing 14, the electric spindle 2, the fixing base 5, the first gear 31, the second gear 32, and the driving assembly 4, integrates the rotary lifting structure into a whole, has a compact structure, a small size and high precision, and can meet the processing operations such as cutting the valve seat of a small-space valve body.
Example 2
The present embodiment provides a machining apparatus for valve machining, as shown in fig. 4, which includes the rotary lifting mechanism for valve machining described in embodiment 1, and further includes a machining tool installed at the installation end 10 for the rotary lifting mechanism. The machining tool includes but is not limited to one or more of a feeding mechanism, a boring cutter, a milling cutter and a grinding cutter, and a person skilled in the art can select a suitable machining tool according to the actual needs of the valve repairing machining operation and the like.
It should be noted that the linkage shaft can be expanded through the mounting end 10, and cables of the expanded linkage shaft are connected through the slip ring assembly 8, so that multi-axis numerical control linkage of three axes, four axes and the like can be realized, the machining requirement of an inclined plane or a complex curved surface can be met, and the remote control requirement of the machining device can be met.
In this embodiment, a specific implementation manner is provided, and the machining tool includes a sliding table 91 and a boring tool 92 installed on the sliding table 91. The slide 91 may be a conventional electric screw slide of the prior art. In this embodiment, the sliding table 91 is driven by a motor 93, and the motor 93 is fixed to one side of the screw spline shaft 11 by a mounting member. The arrangement can fully utilize the space at the end part of the lead screw spline shaft 11, and the occupied space of the processing device for processing the valve is not additionally increased.
The working process of the machining device for machining the valve in the embodiment is as follows:
the rotating direction and the lifting height of the boring tool 92 are adjusted by the rotating lifting mechanism for valve machining, the horizontal position of the boring tool 92 is adjusted by the sliding table 91, and the machining requirements of an inclined plane or a curved surface are met by adjusting the positions in three dimensions.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A gyration elevating system for valve processing which characterized in that includes:
a driveshaft assembly (1), the driveshaft assembly (1) having a mounting end (10) for mounting a valve machining tool;
the electric spindle (2), the electric spindle (2) is fixedly connected with the transmission shaft assembly (1), so that the transmission shaft assembly (1) can perform rotary motion around the axis of the electric spindle (2);
the lifting assembly (3) is connected with the transmission shaft assembly (1) so that the transmission shaft assembly (1) can perform lifting motion along the axial direction of the electric spindle (2);
the power output end of the driving component (4) is connected with the lifting component (3) and can provide driving force for the lifting component (3).
2. The rotary lifting mechanism for valve machining according to claim 1, characterized in that the drive shaft assembly (1) comprises a lead screw spline shaft (11), a spline nut (12), a lead screw nut (13); the spline nut (12) is arranged on a spline groove of the lead screw spline shaft (11); the screw nut (13) is arranged on a screw thread of the screw spline shaft (11); the mounting end (10) is located at the end of the lead screw spline shaft (11).
3. The rotary lifting mechanism for valve machining according to claim 2, characterized in that the drive shaft assembly (1) further comprises a support bearing (14); the support bearing (14) is arranged around the periphery of the screw nut (13).
4. The rotary lifting mechanism for valve machining according to claim 3, characterized in that the transmission shaft assembly (1) is connected with the electric spindle (2) through a fixed seat (5);
the fixed seat (5) is fixed on the electric spindle (2); the inner part of the fixed seat (5) is provided with a cavity for accommodating the supporting bearing (14), and the screw nut (13) is fixed on the fixed seat (5) through the supporting bearing (14);
the spline nut (12) is fixed on the electric spindle (2) to enable the lead screw spline shaft (11) to be coaxial with the electric spindle (2).
5. The rotary lifting mechanism for valve machining according to claim 4, wherein a fixing plate (6) is arranged on an outer wall of the fixing seat (5), and the driving assembly (4) is fixed on the fixing seat (5) through the fixing plate (6).
6. A rotary lifting mechanism for valve machining according to any one of claims 2-5, characterized in that the lifting assembly (3) comprises a first gear (31), a second gear (32); the first gear (31) is meshed with the second gear (32), and the second gear (32) is fixed with the screw nut (13); when the first gear (31) rotates, the second gear (32) drives the lead screw nut (13) to rotate, so that the lead screw nut (13) generates relative displacement relative to the lead screw spline shaft (11).
7. The rotary lifting mechanism for valve machining according to claim 6, characterized in that the power output end of the driving assembly (4) is connected with the first gear (31).
8. The rotary lifting mechanism for valve machining according to claim 7, further comprising a protective cover (7), wherein the protective cover (7) is sleeved outside the first gear (31) and the second gear (32).
9. The rotary lifting mechanism for valve machining according to claim 8, further comprising a slip ring assembly (8); the slip ring component (8) is fixed on the protective cover (7).
10. A machining device for valve machining, characterized by comprising a rotary lifting mechanism for valve machining according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210096029.9A CN114309716A (en) | 2022-01-26 | 2022-01-26 | Rotary lifting mechanism for valve machining and machining device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210096029.9A CN114309716A (en) | 2022-01-26 | 2022-01-26 | Rotary lifting mechanism for valve machining and machining device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114309716A true CN114309716A (en) | 2022-04-12 |
Family
ID=81028277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210096029.9A Pending CN114309716A (en) | 2022-01-26 | 2022-01-26 | Rotary lifting mechanism for valve machining and machining device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114309716A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117961190A (en) * | 2024-03-26 | 2024-05-03 | 苏州众捷汽车零部件股份有限公司 | High-precision flange inner wall key groove machining device |
-
2022
- 2022-01-26 CN CN202210096029.9A patent/CN114309716A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117961190A (en) * | 2024-03-26 | 2024-05-03 | 苏州众捷汽车零部件股份有限公司 | High-precision flange inner wall key groove machining device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4411178A (en) | Pipe end preparation machine | |
| CN114309716A (en) | Rotary lifting mechanism for valve machining and machining device thereof | |
| CN114083349A (en) | Automatic equipment of polishing of burring | |
| CN103264169A (en) | Portable in-tank flange end face machining machine | |
| CN216801777U (en) | Rotary lifting mechanism for valve machining and machining device thereof | |
| EP0527731B1 (en) | Portable machine tool | |
| US4175471A (en) | Cutting apparatus and vertical drive mechanism therefor | |
| KR20010068594A (en) | Method and apparatus for replace a ring in opening/closing valve equipped in ducts or pipes for passage of fluid | |
| CN211916851U (en) | Five-axis machining robot | |
| CN202846170U (en) | Locking swing head used for five-axis machine tool | |
| US20050155471A1 (en) | Radial feed facing head for boring bar | |
| KR101723226B1 (en) | Cutting Machine | |
| CN216326427U (en) | On-site processing system for spent fuel container cutting in irradiation environment | |
| CN203292493U (en) | Portable in-tank flange end face processing machine | |
| CN114161412B (en) | Full-linkage welding robot structure and control method thereof | |
| CN103084613B (en) | Equipment restoring device | |
| CN107916611B (en) | Indexable multifunctional road maintenance machine | |
| CN208132032U (en) | A kind of device of boring inside holes | |
| CN113084447A (en) | Revolving body maintenance equipment | |
| KR20160150012A (en) | Apparatus for forming serration | |
| JPH04244301A (en) | Valve seat machining device for gate valve, check valve, etc. | |
| CN206425577U (en) | Portable Boring device with modularization vertical-type boring bar driver | |
| CN100531983C (en) | Apparatus for processing large aperture flange seal surface for container joint | |
| CN114918827B (en) | Electric spindle device for dressing grinding wheel | |
| CN104985257B (en) | Weld seam cutting machine and its positioner with positioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |