CN113701600B - Quick measuring equipment of steel casting circle internal diameter - Google Patents
Quick measuring equipment of steel casting circle internal diameter Download PDFInfo
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- CN113701600B CN113701600B CN202111253515.9A CN202111253515A CN113701600B CN 113701600 B CN113701600 B CN 113701600B CN 202111253515 A CN202111253515 A CN 202111253515A CN 113701600 B CN113701600 B CN 113701600B
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- inner diameter
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/08—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters
- G01B5/12—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters internal diameters
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a quick measuring device for the round inner diameter of a steel casting, which comprises a measuring fixed base, wherein the upper end of the measuring fixed base is provided with a casing, a threaded transmission cavity is arranged inside the casing, the right end of the threaded transmission cavity is provided with a measuring synchronous display mechanism, and the left end of the threaded transmission cavity is provided with a sliding mechanism; through the arranged measurement synchronous display mechanism, the arranged rotating disc and the thread grooves arranged on the left end surface and the right end surface of the rotating disc are utilized, and thread transmission is synchronously carried out among the thread grooves, the left thread teeth and the synchronous end thread teeth, so that the output display of the measured inner diameter is realized, and the inner diameter data inconvenient to measure is synchronously displayed at the overhanging end convenient to measure; meanwhile, through the arranged measuring tension spring and the synchronous end tension spring, the left thread tooth and the thread groove during thread transmission are eliminated through continuous pulling of the springs, and the idle stroke difference between the synchronous end thread tooth and the thread groove reduces the error during thread inner diameter measurement.
Description
Technical Field
The invention relates to the technical field of size measurement, in particular to a device for quickly measuring the inner diameter of a steel casting circle.
Background
The steel pipe is the building materials in the aspect of the wide application building, and after the steel pipe processing was accomplished, to different technical requirement and service environment, need guarantee that the size of steel pipe accords with technical requirement, the main dimension of steel pipe is inside and outside footpath, but generally uses slide caliper or micrometer when measuring the internal diameter, when using micrometer or slide caliper to measure, can only carry out manual single and measure, and measurement efficiency is low, can produce unnecessary error because of artifical reading moreover.
Disclosure of Invention
In order to overcome the defects, the invention provides a device for rapidly measuring the round inner diameter of a steel casting, which adopts the technical scheme that:
the invention relates to a steel casting round inner diameter rapid measuring device, which comprises a measuring fixed base, wherein the upper end of the measuring fixed base is provided with a shell, a threaded transmission cavity is arranged inside the shell, the right end of the threaded transmission cavity is provided with a measuring synchronous display mechanism, the left end of the threaded transmission cavity is provided with a sliding mechanism, the left end of the sliding mechanism is provided with a telescopic mechanism, the telescopic mechanism is used for penetrating into the inside of a steel casting so as to measure the inner diameter at a specific position, the measuring synchronous display mechanism is used for controlling the up-and-down movement of the sliding mechanism so as to enable the upper end and the lower end of the telescopic mechanism to be close to the pipe wall of the inner diameter to be measured, the measuring synchronous display mechanism comprises a middle fixed shaft rotatably arranged in the middle of the left end wall of the threaded transmission cavity, the middle of the middle fixed shaft is rotatably provided with a sliding ring, and the right end of the middle fixed shaft is rotatably provided with a cylindrical rotating cover, a rotating disc is fixedly arranged in the middle of the cylindrical rotating cover, thread grooves are fixedly arranged on the left and right end faces of the rotating disc, a main transmission motor is fixedly arranged in the middle of the right end wall of the thread transmission cavity, the left end of the main transmission motor is in driving connection with a main transmission motor shaft, the left end of the main transmission motor shaft is fixedly connected to the right end face of the cylindrical rotating cover, a right end wall fixing plate is fixedly arranged on the right end wall of the thread transmission cavity, the upper end of the right end wall fixing plate is fixedly connected with a synchronous end vertical sliding rod, a synchronous end vertical sliding block is slidably arranged in the middle of the synchronous end vertical sliding rod, a synchronous end tension spring is fixedly arranged on the lower end face of the synchronous end vertical sliding block, the other end of the synchronous end tension spring is fixedly connected to the upper end face of the right end wall fixing plate, and a synchronous end thread block is fixedly connected to the left end face of the synchronous end vertical sliding block, the left end face of the synchronous end thread block is fixedly provided with synchronous end thread teeth, the synchronous end thread teeth can be in thread transmission with the thread grooves, and the synchronous end tension spring is used for tensioning the whole body formed by the synchronous end vertical sliding block, the synchronous end thread block and the synchronous end thread teeth, so that the space difference between the synchronous end thread teeth and the thread grooves during thread transmission is eliminated, and the error during inner diameter measurement is reduced.
Further, slide mechanism is including fixed setting up the vertical supplementary piece of sliding of screw thread transmission chamber right-hand member wall department, the inside vertical spout that is equipped with of vertical supplementary piece of sliding, the inside of vertical supplementary piece of sliding is equipped with vertical spout, it is equipped with vertical slider to slide in the vertical spout, the middle part fixed connection measurement of vertical slider links up the piece, measure the right-hand member fixed connection thread piece connecting block that links up the piece, the right-hand member fixed connection thread piece of thread piece connecting block, the right-hand member of thread piece is fixed and is equipped with left thread tooth, left thread tooth can with thread groove screw thread transmission.
Furthermore, the fixed left opening that is equipped with in left end wall department in screw drive chamber, the fixed right opening that is equipped with in right end wall department in screw drive chamber, the fixed synchronous display needle that is equipped with in right terminal surface department of the vertical slider of synchronization end, the synchronous display needle is used for the synchronous display casting steel internal diameter.
Further, the left end face of the measuring connection block is fixedly connected with an auxiliary block, the telescopic mechanism comprises an extending mechanism auxiliary block fixedly connected with the left end face of the auxiliary block, an extending cavity is formed in the extending mechanism auxiliary block, sliding auxiliary blocks are fixedly arranged at the upper end wall and the lower end wall of the extending cavity, a transverse sliding groove is fixedly formed in the middle of each sliding auxiliary block, a transverse sliding block is arranged on each transverse sliding groove in a sliding mode, and the extending block is fixedly arranged in the middle of each transverse sliding block.
Further, the inside of stretching out the piece is equipped with stretches out the transmission chamber, the fixed screw thread piece that stretches out that is equipped with of right-hand member that stretches out the transmission chamber, the fixed screw thread drive motor that is equipped with in right-hand member wall department that stretches out the chamber, screw thread drive motor's left end drive connection stretches out the drive threaded rod, stretch out the drive threaded rod can with stretch out screw thread piece screw thread transmission, the left end fixed connection who stretches out the piece stretches out the stabilizer blade, it measures the contact head to stretch out stabilizer blade left end fixed connection.
Furthermore, the lower end of the thread block is fixedly connected with a measuring tension spring, the other end of the measuring tension spring is fixedly connected with the upper arc surface of the sliding ring, and the measuring tension spring is used for eliminating the space difference between the left thread tooth and the thread groove during thread transmission and reducing the error during inner diameter measurement.
Compared with the prior art, the invention has the following beneficial effects: through the arranged measurement synchronous display mechanism, the arranged rotating disc and the thread grooves arranged on the left end surface and the right end surface of the rotating disc are utilized, and thread transmission is synchronously carried out among the thread grooves, the left thread teeth and the synchronous end thread teeth, so that the output display of the measured inner diameter is realized, and the inner diameter data inconvenient to measure is synchronously displayed at the overhanging end convenient to measure; meanwhile, through the arranged measuring tension spring and the synchronous end tension spring, the left thread tooth and the thread groove during thread transmission are eliminated through continuous pulling of the springs, and the idle stroke difference between the synchronous end thread tooth and the thread groove reduces the error during thread inner diameter measurement.
Drawings
FIG. 1 is a schematic view of the overall structure of a steel casting circle inner diameter rapid measurement device of the present invention;
FIG. 2 is an enlarged partial schematic view of FIG. 1 of the present invention;
FIG. 3 is an enlarged schematic view of the telescoping mechanism of FIG. 1 of the present invention;
FIG. 4 is a cross-sectional view taken at A-A of FIG. 3 in accordance with the present invention;
FIG. 5 is a cross-sectional view taken at B-B of FIG. 2 in accordance with the present invention;
in the figure:
10. measuring the fixed base; 11. a housing; 12. a threaded drive cavity; 13. a measurement synchronization display mechanism; 14. a sliding mechanism; 15. a telescoping mechanism; 16. a middle fixing shaft; 17. a slip ring; 18. a cylindrical rotating cover; 19. a main drive motor shaft; 20. a main drive motor; 21. a right port; 22. a left port; 23. rotating the disc; 24. a thread groove; 25. a vertical sliding auxiliary block; 26. a vertical chute; 27. a vertical slide block; 28. measuring the splice block; 29. a thread block connecting block; 30. a thread block; 31. a left thread tooth; 32. measuring a tension spring; 33. an auxiliary block; 34. a right end wall fixing plate; 35. a synchronous end vertical sliding rod; 36. a synchronous end vertical slide block; 37. a synchronous end thread block; 38. synchronous end thread teeth; 39. a synchronous display needle; 40. a synchronous end tension spring; 41. extending the mechanism auxiliary block; 42. extending out of the cavity; 43. a sliding auxiliary block; 44. a transverse chute; 45. a transverse slide block; 46. a protruding block; 47. extending out of the transmission cavity; 48. extending out of the thread block; 49. a screw drive motor; 50. extending out the transmission threaded rod; 51. extending the support legs; 52. and measuring the contact head.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention:
referring to fig. 1-5, the rapid measuring equipment for the round inner diameter of the steel casting according to the embodiment of the invention comprises a measuring fixing base 10, a casing 11 is arranged at the upper end of the measuring fixing base 10, a threaded transmission cavity 12 is arranged inside the casing 11, a measuring synchronous display mechanism 13 is arranged at the right end of the threaded transmission cavity 12, a sliding mechanism 14 is arranged at the left end of the threaded transmission cavity 12, a telescopic mechanism 15 is arranged at the left end of the sliding mechanism 14, the telescopic mechanism 15 is used for penetrating into the steel casting to measure the inner diameter at a specific position, the measuring synchronous display mechanism 13 is used for controlling the up-and-down movement of the sliding mechanism 14 so as to realize that the upper end and the lower end of the telescopic mechanism 15 are close to the pipe wall of the inner diameter to be measured, the measuring synchronous display mechanism 13 comprises a middle fixing shaft 16 rotatably arranged at the middle of the left end wall of the threaded transmission cavity 12, a sliding ring 17 is rotatably arranged in the middle of the middle fixing shaft 16, a cylindrical rotating cover 18 is rotatably arranged at the right end of the middle fixing shaft 16, a rotating disc 23 is fixedly arranged in the middle of the cylindrical rotating cover 18, thread grooves 24 are fixedly arranged at the left end face and the right end face of the rotating disc 23, a main transmission motor 20 is fixedly arranged at the middle of the right end wall of the thread transmission cavity 12, the left end of the main transmission motor 20 is in driving connection with a main transmission motor shaft 19, the left end of the main transmission motor shaft 19 is fixedly connected at the right end face of the cylindrical rotating cover 18, a right end wall fixing plate 34 is fixedly arranged at the right end wall of the thread transmission cavity 12, the upper end of the right end wall fixing plate 34 is fixedly connected with a synchronous end vertical sliding rod 35, a synchronous end vertical sliding block 36 is slidably arranged in the middle of the synchronous end vertical sliding rod 35, and a synchronous end tension spring 40 is fixedly arranged at the lower end face of the synchronous end vertical sliding block 36, the other end of the synchronous end tension spring 40 is fixedly connected to the upper end face of the right end wall fixing plate 34, the left end face of the synchronous end vertical sliding block 36 is fixedly connected to the synchronous end thread block 37, the left end face of the synchronous end thread block 37 is fixedly provided with a synchronous end thread tooth 38, the synchronous end thread tooth 38 can be in thread transmission with the thread groove 24, and the synchronous end tension spring 40 is used for tensioning the whole formed by the synchronous end vertical sliding block 36, the synchronous end thread block 37 and the synchronous end thread tooth 38, so that the space difference between the synchronous end thread tooth 38 and the thread groove 24 during thread transmission is eliminated, and the error during inner diameter measurement is reduced.
Advantageously, the sliding mechanism 14 comprises a vertical sliding auxiliary block 25 fixedly arranged at the right end wall of the threaded transmission cavity 12, a vertical sliding chute 26 is arranged inside the vertical sliding auxiliary block 25, a vertical sliding block 27 is slidably arranged in the vertical sliding chute 26, a measuring joint block 28 is fixedly connected to the middle part of the vertical sliding block 27, a threaded block connecting block 29 is fixedly connected to the right end of the measuring joint block 28, a threaded block 30 is fixedly connected to the right end of the threaded block connecting block 29, a left threaded tooth 31 is fixedly arranged at the right end of the threaded block 30, and the left threaded tooth 31 can be in threaded transmission with the threaded groove 24; the rotation of the cylindrical rotating cover 18 and the rotating disc 23 is realized by controlling the rotation of the machine shell 11, so that the thread transmission of the thread groove 24, the left thread tooth 31 and the synchronous end thread tooth 38 is realized.
Advantageously, a left through hole 22 is fixedly arranged at the left end wall of the threaded transmission cavity 12, a right through hole 21 is fixedly arranged at the right end wall of the threaded transmission cavity 12, and a synchronous display needle 39 is fixedly arranged at the right end face of the synchronous end vertical slide block 36; the synchronous display needle 39 is used for synchronously displaying the inner diameter of the cast steel.
Beneficially, the left end face of the measuring connection block 28 is fixedly connected with an auxiliary block 33, the telescoping mechanism 15 includes an extension mechanism auxiliary block 41 fixedly connected to the left end face of the auxiliary block 33, an extension cavity 42 is provided inside the extension mechanism auxiliary block 41, sliding auxiliary blocks 43 are fixedly provided at the upper and lower end walls of the extension cavity 42, a transverse sliding groove 44 is fixedly provided at the middle of the sliding auxiliary block 43, a transverse sliding block 45 is slidably provided on the transverse sliding groove 44, and an extension block 46 is fixedly provided in the middle of the transverse sliding block 45.
Beneficially, an extension transmission cavity 47 is formed inside the extension block 46, an extension threaded block 48 is fixedly arranged at the right end of the extension transmission cavity 47, a threaded transmission motor 49 is fixedly arranged at the right end wall of the extension cavity 42, the left end of the threaded transmission motor 49 is in driving connection with an extension transmission threaded rod 50, the extension transmission threaded rod 50 can be in threaded transmission with the extension threaded block 48, the left end of the extension block 46 is fixedly connected with an extension supporting foot 51, and the left end of the extension supporting foot 51 is fixedly connected with a measurement contact head 52; the transmission of the extension transmission threaded rod 50 and the extension threaded block 48 is controlled by controlling the start and stop of the threaded transmission motor 49, so that the extension of the telescopic mechanism 15 is realized, and the inner diameter of the steel part can be measured.
Advantageously, the lower end of the thread block 30 is fixedly connected with a measuring tension spring 32, and the other end of the measuring tension spring 32 is fixedly connected with the upper arc surface of the sliding ring 17; the measuring tension spring 32 is used for eliminating the space difference between the left thread tooth 31 and the thread groove 24 during thread transmission, and reducing the error during inner diameter measurement.
The invention relates to a device for rapidly measuring the round inner diameter of a steel casting, which comprises the following working procedures:
in the initial state, the vertical slide block 27 and the measuring connection block 28 are positioned at the bottommost part of the vertical slide groove 26, the synchronous end vertical slide block 36 slides at the bottom of the synchronous end vertical slide rod 35, and the extension block 46 is positioned in the extension cavity 42;
when measuring the inner diameter, firstly starting the screw thread transmission motor 49, and starting the screw thread transmission motor 49 to drive the extension transmission threaded rod 50 to be in screw thread transmission with the extension thread block 48, so that the extension block 46 extends out of the extension cavity 42;
when the whole of the extending support leg 51, the measuring contact 52 and the extending block 46 extends into the round piece to be measured, the main transmission motor 20 is started to drive the cylindrical rotating cover 18 to rotate, the cylindrical rotating cover 18 rotates to drive the rotating disc 23 to rotate, and the thread groove 24 is in thread transmission with the left thread tooth 31 and the synchronous end thread tooth 38 respectively;
and finally, when the measuring contact head 52 is close to the inner diameter end wall of the steel part to be measured, the main transmission motor 20 is stopped, the distance between the vertexes of the measuring contact head 52 is synchronously displayed between the vertexes of the synchronous display needles 39, and the distance between the vertexes of the measuring synchronous display needles 39 is the diameter of the inner wall of the steel part to be measured.
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.
Claims (5)
1. The utility model provides a quick measuring equipment of steel casting circle internal diameter, is including measuring unable adjustment base (10), its characterized in that: the upper end of the measurement fixing base (10) is provided with a machine shell (11), a thread transmission cavity (12) is arranged inside the machine shell (11), the right end of the thread transmission cavity (12) is provided with a measurement synchronous display mechanism (13), the left end of the thread transmission cavity (12) is provided with a sliding mechanism (14), the left end of the sliding mechanism (14) is provided with a telescopic mechanism (15), the telescopic mechanism (15) is used for penetrating into the interior of a steel casting so as to measure the inner diameter at a specific position, and the measurement synchronous display mechanism (13) is used for controlling the up-and-down movement of the sliding mechanism (14) so as to realize that the upper end and the lower end of the telescopic mechanism (15) are close to the wall of the inner diameter to be measured;
the measurement synchronous display mechanism (13) comprises a middle fixing shaft (16) rotatably arranged in the middle of the left end wall of the threaded transmission cavity (12), a sliding ring (17) is rotatably arranged in the middle of the middle fixing shaft (16), a cylindrical rotating cover (18) is rotatably arranged at the right end of the middle fixing shaft (16), a rotating disc (23) is fixedly arranged in the middle of the cylindrical rotating cover (18), threaded grooves (24) are fixedly arranged on the left end surface and the right end surface of the rotating disc (23), a main transmission motor (20) is fixedly arranged in the middle of the right end wall of the threaded transmission cavity (12), the left end of the main transmission motor (20) is in driving connection with a main transmission motor shaft (19), and the left end of the main transmission motor shaft (19) is fixedly connected to the right end surface of the cylindrical rotating cover (18);
a right end wall fixing plate (34) is fixedly arranged on the right end wall of the threaded transmission cavity (12), the upper end of the right end wall fixing plate (34) is fixedly connected with a synchronous end vertical sliding rod (35), a synchronous end vertical sliding block (36) is slidably arranged in the middle of the synchronous end vertical sliding rod (35), a synchronous end tension spring (40) is fixedly arranged on the lower end face of the synchronous end vertical sliding block (36), the other end of the synchronous end tension spring (40) is fixedly connected to the upper end face of the right end wall fixing plate (34), a synchronous end thread block (37) is fixedly connected to the left end face of the synchronous end vertical sliding block (36), a synchronous end thread tooth (38) is fixedly arranged on the left end face of the synchronous end thread block (37), and the synchronous end thread tooth (38) can be in threaded transmission with the thread groove (24);
slide mechanism (14) are including fixed setting vertical slip auxiliary block (25) of screw thread transmission chamber (12) right-hand member wall department, vertical slip auxiliary block (25) inside is equipped with vertical spout (26), the inside of vertical slip auxiliary block (25) is equipped with vertical spout (26), it is equipped with vertical slider (27) to slide in vertical spout (26), the middle part fixed connection of vertical slider (27) measures and links up piece (28), measure right-hand member fixed connection screw block connecting block (29) that links up piece (28), right-hand member fixed connection screw block (30) of screw block connecting block (29), the fixed left thread tooth (31) that is equipped with of right-hand member of screw block (30), left side thread tooth (31) can with screw thread groove (24) screw thread transmission.
2. The steel casting round inner diameter rapid measuring device according to claim 1, characterized in that: the left end wall department of screw thread transmission chamber (12) is fixed and is equipped with left opening (22), the right end wall department of screw thread transmission chamber (12) is fixed and is equipped with right opening (21), the fixed synchronous display needle (39) that is equipped with of right terminal surface department of the vertical slider (36) of synchronization end.
3. The steel casting round inner diameter rapid measuring device according to claim 1, characterized in that: the left end face of measuring linking block (28) department fixed connection auxiliary block (33), telescopic machanism (15) are including fixed connection in the auxiliary block (33) left end face stretch out mechanism auxiliary block (41), the inside of stretching out mechanism auxiliary block (41) is equipped with stretches out chamber (42), the fixed supplementary block (43) that slides that is equipped with of upper and lower end wall department of stretching out chamber (42), the fixed horizontal spout (44) that is equipped with of middle department of the supplementary block (43) that slides, it is equipped with horizontal slider (45) to slide on horizontal spout (44), fixed being equipped with in the middle of horizontal slider (45) stretches out piece (46).
4. The steel casting round inner diameter rapid measuring device according to claim 3, characterized in that: the inside of stretching out piece (46) is equipped with stretches out transmission chamber (47), the fixed screw thread piece (48) that stretches out that is equipped with of right-hand member that stretches out transmission chamber (47), the fixed screw thread drive motor (49) that is equipped with of right-hand member wall department that stretches out chamber (42), the left end drive connection of screw thread drive motor (49) stretches out drive threaded rod (50), stretch out drive threaded rod (50) can with stretch out screw thread piece (48) screw thread transmission, the left end fixed connection who stretches out piece (46) stretches out stabilizer blade (51), it measures contact head (52) to stretch out stabilizer blade (51) left end fixed connection.
5. The steel casting round inner diameter rapid measuring device according to claim 1, characterized in that: the lower end of the thread block (30) is fixedly connected with a measuring tension spring (32), and the other end of the measuring tension spring (32) is fixedly connected with the upper arc surface of the sliding ring (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111253515.9A CN113701600B (en) | 2021-10-27 | 2021-10-27 | Quick measuring equipment of steel casting circle internal diameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111253515.9A CN113701600B (en) | 2021-10-27 | 2021-10-27 | Quick measuring equipment of steel casting circle internal diameter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113701600A CN113701600A (en) | 2021-11-26 |
| CN113701600B true CN113701600B (en) | 2022-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111253515.9A Active CN113701600B (en) | 2021-10-27 | 2021-10-27 | Quick measuring equipment of steel casting circle internal diameter |
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| CN (1) | CN113701600B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3200695A1 (en) * | 1982-01-08 | 1983-07-21 | Trimos S.A., 1022 Chavannes | DEVICE FOR MEASURING DISTANCES, IN PARTICULAR THREAD DIAMETERS |
| CN207395615U (en) * | 2017-11-09 | 2018-05-22 | 上海市欣宇建设工程检测试验有限公司 | A kind of quick measurement detection device |
| CN208952856U (en) * | 2018-10-14 | 2019-06-07 | 邸志勇 | A kind of inner diameter measuring device |
| CN209166303U (en) * | 2019-01-15 | 2019-07-26 | 山东明峰消防科技有限公司 | A kind of groove pipe fitting end inside/outside diameter size synchronization cubing |
| CN209559077U (en) * | 2019-01-30 | 2019-10-29 | 青岛祥兴钢管有限公司 | A kind of steel pipe detection platform |
| CN212363051U (en) * | 2020-06-03 | 2021-01-15 | 潍坊永亮机械有限公司 | Pipe fitting internal diameter roundness tolerance gauge |
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2021
- 2021-10-27 CN CN202111253515.9A patent/CN113701600B/en active Active
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