CN211639646U - Maintenance auxiliary device for petroleum drilling diesel engine - Google Patents
Maintenance auxiliary device for petroleum drilling diesel engine Download PDFInfo
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- CN211639646U CN211639646U CN202020276972.4U CN202020276972U CN211639646U CN 211639646 U CN211639646 U CN 211639646U CN 202020276972 U CN202020276972 U CN 202020276972U CN 211639646 U CN211639646 U CN 211639646U
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- diesel engine
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- semicircular
- shaped mounting
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Abstract
The utility model discloses an oil drilling diesel engine maintenance auxiliary device, including the U-shaped mounting panel, the rectangular hole has all been seted up on the both sides inner wall of U-shaped mounting panel, and the equal fixed mounting in bottom both sides of U-shaped mounting panel has two first electric telescopic handle, and first gyro wheel is installed in first electric telescopic handle's bottom rotation, and the equal threaded fixation in both sides of U-shaped mounting panel has first push rod motor, and the output shaft of first push rod motor extends to the rectangular hole that corresponds downthehole and fixed mounting places the board, places the board slip cap and establishes in the rectangular hole that corresponds. The utility model relates to a rationally, convenient operation is convenient for place the diesel engine on two semicircle boards and highly adjust the diesel engine according to maintenance personal's needs, avoids long-time bow maintenance, and is convenient for rotate the diesel engine in the in-process of maintenance diesel engine, avoids maintenance personal to make a round trip to walk round the diesel engine, and labour saving and time saving improves work efficiency, is favorable to the use.
Description
Technical Field
The utility model relates to a diesel engine maintenance auxiliary assembly technical field especially relates to an oil drilling diesel engine maintenance auxiliary device.
Background
The loss can appear in long-time use of oil drilling diesel engine, in order to practice thrift the cost, will maintain the oil drilling diesel engine of loss, current oil drilling diesel engine is most heavier, maintenance personal is direct waist maintenance mostly when the maintenance, the in-process of maintenance need make a round trip to walk the maintenance round the oil drilling diesel engine, high in labor strength, work efficiency is low, can not satisfy the user demand, therefore we have proposed an oil drilling diesel engine maintenance auxiliary device and have been used for solving above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing an oil drilling diesel engine maintenance auxiliary device.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an oil drilling diesel engine maintenance auxiliary device comprises a U-shaped mounting plate, rectangular holes are formed in the inner walls of two sides of the U-shaped mounting plate, two first electric telescopic rods are fixedly mounted on two sides of the bottom of the U-shaped mounting plate, first idler wheels are rotatably mounted at the bottom ends of the first electric telescopic rods, first push rod motors are fixedly screwed on two sides of the U-shaped mounting plate, output shafts of the first push rod motors extend into the corresponding rectangular holes and are fixedly mounted with placing plates, the placing plates are slidably sleeved in the corresponding rectangular holes, one sides, close to each other, of the two placing plates extend into the U-shaped mounting plate, two second electric telescopic rods are fixedly mounted on one side of the bottom of the placing plate, the bottom ends of the second electric telescopic rods extend to the lower side of the U-shaped mounting plate and are rotatably mounted with second idler wheels, semicircular grooves are formed in the top of the placing plates, one sides, close to, the two semicircular grooves form a circular groove, a circular plate is rotatably arranged on the inner wall of the bottom of the circular groove and comprises two semicircular plates, the tops of the semicircular plates and the tops of the corresponding placing plates are on the same horizontal line, a clamping block is fixedly arranged on one side, close to the other semicircular plate, of one semicircular plate, the other semicircular plate is movably sleeved on the clamping block, a plurality of anti-abrasion balls are annularly embedded on the inner wall of the bottom of the circular groove, the tops of the anti-abrasion balls are in rolling contact with the bottoms of the corresponding semicircular plates, vertical plates are fixedly arranged on two sides of the top of the U-shaped mounting plate, the same top plate is fixedly arranged on the tops of the two vertical plates, a second push rod motor is fixedly arranged on the top of the top plate through threads, an output shaft of the second push rod motor extends to the lower side of the top plate and is fixedly provided with a mounting box with an opening at the bottom, and screw, the screw thread of two screw rods is turned to reversely, the one end that two screw rods are close to each other welds mutually, one side thread tightening of mounting box has driving motor, driving motor's output shaft extends to in the mounting box and welds mutually with the one end that keeps away from another screw rod in two screw rods, the thread bush is equipped with splint on the screw rod, the bottom of splint extends to the below of mounting box, fixed mounting has the rectangular block on the top inner wall of mounting box, the rectangular block rotates the cover and establishes on two screw rods, the both sides of rectangular block respectively with the mounting box between the both sides inner wall fixed mounting have the locating lever, splint slip cap is established on the locating lever that corresponds.
Preferably, the top of the semicircular plate is embedded with a first anti-skid rubber sheet, and the two first anti-skid rubber sheets form a whole circle.
Preferably, a semicircular annular sliding groove is formed in the inner wall of the bottom of the semicircular groove, the two semicircular annular sliding grooves form a full-circle annular sliding groove, a semicircular annular sliding rail is fixedly mounted at the bottom of the semicircular plate, the two semicircular sliding rails form a full-circle sliding rail, and the full-circle annular sliding groove is connected with the full-circle annular sliding rail in a sliding manner.
Preferably, first chutes are formed in the inner walls of the top and the bottom of the rectangular hole, sliders are fixedly mounted at the top and the bottom of the placing plate, and the sliders are connected with the corresponding first chutes in a sliding mode.
Preferably, one side of the other semicircular plate close to the semicircular plate is provided with a clamping groove, and the side wall of the clamping groove is movably contacted with the outer side of the clamping block.
Preferably, the second anti-skid rubber is fixedly bonded on one side of each of the two clamping plates close to each other.
Preferably, one side of the clamping plate is provided with a threaded hole, and the threaded hole is in threaded connection with the corresponding screw.
Preferably, a circular hole is formed in one side of the rectangular block, a bearing is fixedly sleeved in the circular hole, and an inner ring of the bearing is fixedly sleeved with the outer sides of the two screw rods.
Preferably, a through hole is formed in one side of the clamping plate, and the side wall of the through hole is in sliding connection with the outer side of the corresponding positioning rod.
Compared with the prior art, the beneficial effects of the utility model are that:
by the U-shaped mounting plate, the first electric telescopic rod, the rectangular hole, the first push rod motor, the second electric telescopic rod, the placing plate, the semicircular groove, the anti-abrasion ball, the semicircular plate, the clamping block, the second push rod motor, the mounting box, the screw rod, the driving motor, the clamping plate and the positioning rod are matched with the rectangular block, the diesel engine is positioned at the top of the two semicircular plates, when the position height of the diesel engine is required to be adjusted according to actual requirements, the four first electric telescopic rods and the four second electric telescopic rods are forwardly started to drive the U-shaped mounting plate and the two placing plates to move upwards, the two placing plates drive the diesel engine to move upwards to a required position through the two semicircular plates, when the rear side of the diesel engine is required to be maintained, the diesel engine is rotated, and simultaneously the two semicircular plates are driven to rotate at the tops of the plurality of anti-abrasion balls through the two, the rotating force when the diesel engine is rotated is saved.
The utility model relates to a rationally, convenient operation is convenient for place the diesel engine on two semicircle boards and highly adjust the diesel engine according to maintenance personal's needs, avoids long-time bow maintenance, and is convenient for rotate the diesel engine in the in-process of maintenance diesel engine, avoids maintenance personal to make a round trip to walk round the diesel engine, and labour saving and time saving improves work efficiency, is favorable to the use.
Drawings
Fig. 1 is a schematic sectional view of an auxiliary device for maintenance of a diesel engine in oil drilling according to the present invention;
FIG. 2 is a schematic structural view of portion A of FIG. 1;
fig. 3 is a schematic top view of the connecting member of the U-shaped mounting plate, the placing plate and the semicircular plate in fig. 1.
In the figure: 1U-shaped mounting panel, 2 first electric telescopic handle, 3 rectangular holes, 4 first push rod motors, 5 second electric telescopic handle, 6 place the board, 7 semicircular slots, 8 abrasionproof balls, 9 semicircular plates, 10 fixture blocks, 11 second push rod motors, 12 mounting boxes, 13 screw rods, 14 driving motor, 15 splint, 16 locating levers, 17 rectangular blocks.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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.
Referring to fig. 1-3, an oil drilling diesel engine maintenance auxiliary device comprises a U-shaped mounting plate 1, rectangular holes 3 are respectively formed on the inner walls of two sides of the U-shaped mounting plate 1, two first electric telescopic rods 2 are respectively fixedly mounted on two sides of the bottom of the U-shaped mounting plate 1, first rollers are rotatably mounted at the bottom ends of the first electric telescopic rods 2, first push rod motors 4 are respectively and fixedly screwed on two sides of the U-shaped mounting plate 1, output shafts of the first push rod motors 4 extend into the corresponding rectangular holes 3 and are fixedly provided with placing plates 6, the placing plates 6 are slidably sleeved in the corresponding rectangular holes 3, one sides of the two placing plates 6 close to each other extend into the U-shaped mounting plate 1, two second electric telescopic rods 5 are fixedly mounted on one side of the bottom of the placing plates 6, the bottom ends of the second electric telescopic rods 5 extend to the lower side of the U-shaped mounting plate 1 and are rotatably mounted, the top of the placing plate 6 is provided with a semicircular groove 7, one side of each of the two semicircular grooves 7, which is close to each other, is provided with an opening, the two semicircular grooves 7 form a whole circular groove, a circular plate is rotatably arranged on the inner wall of the bottom of the whole circular groove, the circular plate comprises two semicircular plates 9, the tops of the semicircular plates 9 and the top of the corresponding placing plate 6 are on the same horizontal line, one side of one semicircular plate 9, which is close to the other semicircular plate 9, of the two semicircular plates 9 is fixedly provided with a fixture block 10, the other semicircular plate 9 is movably sleeved on the fixture block 10, the inner wall of the bottom of the whole circular groove is annularly embedded with a plurality of anti-abrasion balls 8, the tops of the anti-abrasion balls 8 are in rolling contact with the bottom of the corresponding semicircular plate 9, the two sides of the top of the U-shaped mounting plate 1 are fixedly provided with vertical plates, the tops of the two, an output shaft of the second push rod motor 11 extends to the lower part of the top plate and is fixedly provided with a mounting box 12 with an opening at the bottom, screw rods 13 are rotatably mounted on the inner walls of two sides of the mounting box 12, the screw thread turning directions of the two screw rods 13 are opposite, the ends, close to each other, of the two screw rods 13 are welded, a driving motor 14 is fixedly arranged on one side of the mounting box 12 through screw threads, the output shaft of the driving motor 14 extends into the mounting box 12 and is welded with one end, far away from the other screw rod 13, of one screw rod 13 of the two screw rods 13, a clamping plate 15 is sleeved on the screw threads of the screw rods 13, the bottom of the clamping plate 15 extends to the lower part of the mounting box 12, a rectangular block 17 is fixedly mounted on the inner wall of the top part of the mounting box 12, the rectangular block 17 is rotatably sleeved on the two screw rods 13, positioning rods 16 are fixedly mounted between two, the utility model relates to a rationally, convenient operation is convenient for place the diesel engine on two semicircle boards 9 and highly adjust the diesel engine according to maintenance personal's needs, avoids long-time bow maintenance, and is convenient for rotate the diesel engine in the in-process of maintenance diesel engine, avoids maintenance personal to make a round trip to walk round the diesel engine, and labour saving and time saving improves work efficiency, is favorable to the use.
In the utility model, the top of the semicircular plate 9 is embedded with a first anti-skid rubber sheet, two first anti-skid rubber sheets form a whole circle, the inner wall of the bottom of the semicircular groove 7 is provided with a semicircular annular chute, the two semicircular annular chutes form a whole circle annular chute, the bottom of the semicircular plate 9 is fixedly provided with a semicircular annular slide rail, the two semicircular slide rails form a whole circle slide rail, the whole circle annular chute is connected with the whole circle annular slide rail in a sliding way, the inner wall of the top and the inner wall of the bottom of the rectangular hole 3 are both provided with a first chute, the top and the bottom of the placing plate 6 are both fixedly provided with a slide block, the slide block is connected with the corresponding first chute in a sliding way, one side of the other semicircular plate 9 close to the semicircular plate 9 is provided with a clamping groove, the side wall of the clamping groove is in movable contact with the outer side of the clamping block 10, one side of the, threaded hole is seted up to one side of splint 15, threaded hole and the screw rod 13 threaded connection who corresponds, the circular port has been seted up to one side of rectangular block 17, the circular hole internal fixation cover is equipped with the bearing, the suit is fixed in the outer side of the inner circle of bearing and two screw rods 13, the perforation has been seted up to one side of splint 15, the outside sliding connection of fenestrate lateral wall and the locating lever 16 that corresponds, the utility model relates to a rationally, convenient operation, be convenient for place the diesel engine on two semicircle boards 9 and adjust the height of diesel engine according to maintenance personal's needs, avoid long-time bow maintenance, and be convenient for rotate the diesel engine in the in-process of maintenance diesel engine, avoid maintenance personal to make a round trip to walk around the diesel engine, labour saving.
The working principle is as follows: when the diesel engine is used and needs to be placed on the semicircular plate 9 for maintenance, the two first push rod motors 4 are reversely started, the output shafts of the first push rod motors 4 drive the corresponding placing plates 6 to move, the placing plates 6 gradually move into the corresponding rectangular holes 3 while moving, then the U-shaped mounting plate 1 is pushed, the U-shaped mounting plate 1 drives the four first electric telescopic rods 2 and the four second electric telescopic rods 5 to move while moving, the first electric telescopic rods 2 drive the corresponding first idler wheels to move, the second electric telescopic rods 5 drive the corresponding second idler wheels to move, the U-shaped mounting plate 1 moves while the diesel engine is positioned in the U-shaped mounting plate 1, then the second push rod motors 11 are forwardly started, the output shafts of the second push rod motors 11 drive the mounting box 12 to move, and the mounting box 12 drives the two clamping plates 15 to move downwards through the two screw rods 13, when the diesel engine is positioned between the two clamping plates 15, the driving motor 14 is started in a forward direction, an output shaft of the driving motor 14 drives one screw rod 13 fixedly connected with the driving motor to rotate, one screw rod 13 drives the other screw rod 13 to rotate, under the action of a threaded hole formed in the clamping plate 15, the screw rod 13 drives the corresponding clamping plate 15 to move simultaneously, so that the two clamping plates 15 respectively move on the corresponding positioning rods 16 in a direction approaching to each other, when the clamping plate 15 drives the corresponding second anti-skid rubber to move to be contacted with the diesel engine, the driving motor 14 is stopped, the second push rod motor 11 is started in a reverse direction, an output shaft of the second push rod motor 11 drives the two screw rods 13 to move upwards through the mounting box 12, the two screw rods 13 drive the diesel engine to move upwards to the upper part of the U-shaped mounting plate 1 through the two clamping plates 15, and then the, an output shaft of the first push rod motor 4 drives the corresponding placing plates 6 to move, when the two placing plates 6 move to the direction close to each other until the two placing plates are contacted, the first push rod motor 4 is stopped, then the second push rod motor 11 is started in the forward direction, so that when the bottom of the diesel engine is contacted with the top of the first anti-skid rubber sheet, the driving motor 14 is started in the reverse direction, the clamping force on the diesel engine is relieved, and the diesel engine is positioned at the tops of the two semicircular plates 9;
when the position height of the diesel engine is required to be adjusted according to actual needs, the four first electric telescopic rods 2 and the four second electric telescopic rods 5 are started in a forward direction, the output end of the first electric telescopic rod 2 drives the U-shaped mounting plate 1 to move upwards, the output ends of the four second electric telescopic rods 5 and the U-shaped mounting plate 1 simultaneously drive the two placing plates 6 to move upwards, the placing plates 6 drive the corresponding semicircular plates 9 to move upwards, and when the semicircular plates 9 drive the diesel engine to move upwards to a required position, the first electric telescopic rods 2 and the second electric telescopic rods 5 are stopped;
when needs maintain the rear side of diesel engine, rotate the diesel engine, the diesel engine pivoted drives two semicircle boards 9 through two first anti-skidding rubber simultaneously and rotates, two semicircle boards 9 rotate at a plurality of abrasionproof ball 8's top, a plurality of abrasionproof ball 8's setting, the turning force when having saved the rotation diesel engine, make and be convenient for rotate the diesel engine at the in-process of maintenance diesel engine, avoid the maintenance personal to make a round trip to walk round the diesel engine, time saving and labor saving.
In the description of the present application, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, a connection through an intermediate medium, and a connection between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to specific circumstances.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (9)
1. The maintenance auxiliary device for the petroleum drilling diesel engine comprises a U-shaped mounting plate (1) and is characterized in that rectangular holes (3) are formed in the inner walls of two sides of the U-shaped mounting plate (1), two first electric telescopic rods (2) are fixedly mounted on two sides of the bottom of the U-shaped mounting plate (1), first rolling wheels are rotatably mounted at the bottom ends of the first electric telescopic rods (2), first push rod motors (4) are fixedly threaded on two sides of the U-shaped mounting plate (1), output shafts of the first push rod motors (4) extend into the corresponding rectangular holes (3) and are fixedly mounted with placing plates (6), the placing plates (6) are slidably sleeved in the corresponding rectangular holes (3), one sides of the two placing plates (6), which are close to each other, extend into the U-shaped mounting plate (1), and two second electric telescopic rods (5) are fixedly mounted on one side of the bottom of the placing plates (6), the bottom end of the second electric telescopic rod (5) extends to the lower part of the U-shaped mounting plate (1) and is rotatably provided with a second roller, the top of the placing plate (6) is provided with a semicircular groove (7), one side, close to each other, of each semicircular groove (7) is provided with an opening, each semicircular groove (7) forms a round groove, a circular plate is rotatably arranged on the inner wall of the bottom of each round groove and comprises two semicircular plates (9), the top of each semicircular plate (9) and the top of the corresponding placing plate (6) are on the same horizontal line, one side, close to the other semicircular plate (9), of one semicircular plate (9) of the two semicircular plates (9) is fixedly provided with a fixture block (10), the other semicircular plate (9) is movably sleeved on the fixture block (10), the inner wall of the bottom of each round groove is annularly embedded with a plurality of anti-abrasion balls (8), and the top of each anti-abrasion ball (8) is in rolling contact with the bottom of the corresponding semicircular plate (9), the two sides of the top of the U-shaped mounting plate (1) are fixedly provided with vertical plates, the tops of the two vertical plates are fixedly provided with the same top plate, the top of the top plate is in threaded fixing with a second push rod motor (11), the output shaft of the second push rod motor (11) extends to the lower part of the top plate and is fixedly provided with a mounting box (12) with the bottom arranged for an opening, the inner walls of the two sides of the mounting box (12) are rotatably provided with screw rods (13), the thread turning directions of the two screw rods (13) are opposite, the ends of the two screw rods (13) close to each other are welded, one side of the mounting box (12) is in threaded fixing with a driving motor (14), the output shaft of the driving motor (14) extends into the mounting box (12) and is welded with one end of one screw rod (13) of the two screw rods (13) far away from the other screw rod (13), a clamping plate (15) is sleeved on the screw rod (13), the top inner wall of the mounting box (12) is fixedly provided with a rectangular block (17), the rectangular block (17) is rotatably sleeved on the two screw rods (13), positioning rods (16) are fixedly arranged between two sides of the rectangular block (17) and the inner walls of two sides of the mounting box (12) respectively, and the clamping plates (15) are slidably sleeved on the corresponding positioning rods (16).
2. The maintenance auxiliary device for the petroleum drilling diesel engine as claimed in claim 1, wherein the top of the semicircular plate (9) is embedded with first anti-skid rubber sheets, and the two first anti-skid rubber sheets form a whole circle.
3. The maintenance auxiliary device for the petroleum drilling diesel engine as claimed in claim 1, wherein a semicircular annular sliding groove is formed in the inner wall of the bottom of the semicircular groove (7), two semicircular annular sliding grooves form a full circular annular sliding groove, a semicircular annular sliding rail is fixedly mounted at the bottom of the semicircular plate (9), two semicircular sliding rails form a full circular sliding rail, and the full circular annular sliding groove is slidably connected with the full circular annular sliding rail.
4. The maintenance auxiliary device for the petroleum drilling diesel engine as claimed in claim 1, wherein the top inner wall and the bottom inner wall of the rectangular hole (3) are respectively provided with a first sliding groove, the top and the bottom of the placing plate (6) are respectively fixedly provided with a sliding block, and the sliding blocks are slidably connected with the corresponding first sliding grooves.
5. The maintenance auxiliary device for the petroleum drilling diesel engine as claimed in claim 1, wherein one side of the other semicircular plate (9) close to one semicircular plate (9) is provided with a clamping groove, and the side wall of the clamping groove is movably contacted with the outer side of the clamping block (10).
6. The maintenance auxiliary device for the petroleum drilling diesel engine as claimed in claim 1, characterized in that a second antiskid rubber is fixedly bonded to one side of each of the two clamping plates (15) close to each other.
7. The maintenance auxiliary device for the petroleum drilling diesel engine as claimed in claim 1, characterized in that one side of the clamping plate (15) is provided with a threaded hole, and the threaded hole is in threaded connection with the corresponding screw (13).
8. The maintenance auxiliary device of the petroleum drilling diesel engine according to claim 1, characterized in that a circular hole is formed in one side of the rectangular block (17), a bearing is fixedly sleeved in the circular hole, and an inner ring of the bearing is fixedly sleeved with the outer sides of the two screw rods (13).
9. The maintenance auxiliary device for the petroleum drilling diesel engine is characterized in that one side of the clamping plate (15) is provided with a through hole, and the side wall of the through hole is in sliding connection with the outer side of the corresponding positioning rod (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020276972.4U CN211639646U (en) | 2020-03-09 | 2020-03-09 | Maintenance auxiliary device for petroleum drilling diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020276972.4U CN211639646U (en) | 2020-03-09 | 2020-03-09 | Maintenance auxiliary device for petroleum drilling diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211639646U true CN211639646U (en) | 2020-10-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020276972.4U Expired - Fee Related CN211639646U (en) | 2020-03-09 | 2020-03-09 | Maintenance auxiliary device for petroleum drilling diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211639646U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112757883A (en) * | 2020-12-23 | 2021-05-07 | 林玉珍 | New forms of energy group battery installing support |
| CN115091415A (en) * | 2022-07-20 | 2022-09-23 | 浙江科路核工程服务有限公司 | Maintenance auxiliary device suitable for high radiation environment |
-
2020
- 2020-03-09 CN CN202020276972.4U patent/CN211639646U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112757883A (en) * | 2020-12-23 | 2021-05-07 | 林玉珍 | New forms of energy group battery installing support |
| CN115091415A (en) * | 2022-07-20 | 2022-09-23 | 浙江科路核工程服务有限公司 | Maintenance auxiliary device suitable for high radiation environment |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201009 Termination date: 20210309 |