CN111843928A - Marine diesel engine gear spindle screwing tool and screwing method - Google Patents
Marine diesel engine gear spindle screwing tool and screwing method Download PDFInfo
- Publication number
- CN111843928A CN111843928A CN202010823824.4A CN202010823824A CN111843928A CN 111843928 A CN111843928 A CN 111843928A CN 202010823824 A CN202010823824 A CN 202010823824A CN 111843928 A CN111843928 A CN 111843928A
- Authority
- CN
- China
- Prior art keywords
- marine diesel
- round nut
- gear spindle
- diesel engine
- stud
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gears, Cams (AREA)
Abstract
The invention discloses a marine diesel engine gear spindle tightening tool which comprises a round nut assembly and an outer hexagonal compression bolt, wherein the round nut assembly consists of a special round nut and an outer hexagonal nut fixed on one side of the special round nut in a welding mode, the inner thread of the outer hexagonal nut is smaller than that of the special round nut, and the axial lead of the outer hexagonal nut is coaxial with that of the special round nut. The outer hexagonal compression bolt is screwed into the outer hexagonal nut and extends into the special round nut, and the end head of the outer hexagonal compression bolt is tightly pressed on the end face of the other threaded end of the marine diesel engine gear spindle. The method comprises the following steps: 1) preliminarily screwing a stud at one end of the mandrel into a threaded hole of the rack, 2) installing the tool on the stud at the other end of the mandrel, and 3) screwing the stud at one end of the mandrel into the threaded hole of the rack. The device has a very simple structure, the method reduces the labor intensity of an operator, improves the production efficiency, and effectively solves the problem that the stud of the mandrel is difficult to screw in the threaded hole of the frame.
Description
Technical Field
The invention relates to fixed connection and assembly of a gear shaft and a rack, in particular to a tool and a screwing method for screwing one end of a gear spindle of a double-head screw type marine diesel engine into and fixing the gear spindle on the rack, and belongs to the technical field of fitters.
Background
The gear transmission part sleeve is a core part sleeve for the marine diesel engine to work, and the installation quality of the gear transmission part sleeve directly influences the overall performance and the service life of the marine diesel engine. Fig. 1 is a partial view of a gear transmission part sleeve of a medium-speed diesel engine for a certain type of ship, a positioning boss 101 at the end of the left end of a positioning sleeve 10 is respectively embedded into a threaded positioning counterbore 201 corresponding to a rack 20, an upper transmission gear 30 and a lower transmission gear 40 are respectively supported on the respective corresponding positioning sleeve 10 through a sliding shaft sleeve 50, a stud 601 at one end of a stud-screw-type marine diesel engine gear spindle 60 is screwed into a corresponding rack threaded hole 202, and the end surface of a cylinder 602 extended by the stud 601 at one end abuts against the conical surface of a rack threaded extension bottom hole 203, so that the coaxiality of the axis of the marine diesel engine gear spindle 60 and the axis of the rack threaded hole 202 is ensured through the positioning of the. The positioning sleeves 10 are respectively sleeved on the middle parts of the corresponding diesel engine gear spindles 60, and other parts are mounted in the middle of a stud 603 at the other end of the marine diesel engine gear spindle 60 and then locked by a round nut 70. Thus, the marine diesel gear spindle 60 only bears the bending moment of the upper transmission gear 30 or the lower transmission gear 40 borne by the marine diesel gear spindle and does not bear the torque generated when the gears are meshed, so that the stress state of the marine diesel gear spindle is improved, and the reliability of the marine diesel gear spindle is improved.
In the process of screwing a stud at one end of an existing marine diesel engine gear spindle into a threaded hole of a rack, an operator firstly manually screws the stud at one end of the marine diesel engine gear spindle into the threaded hole of the rack, then screws a blind nut on the end head of the stud at the other end of the marine diesel engine gear spindle, clockwise pulls the blind nut by using a torque wrench, and utilizes the locking effect of the blind nut after the blind nut is rotated in place and the threads at the end head of the stud to fixedly connect the blind nut and the marine diesel engine gear spindle into a whole, and then rotates the blind nut to drive the marine diesel engine gear spindle to rotate, so that the stud at one end of the marine diesel engine gear spindle is screwed into the threaded hole of the. When the marine diesel engine gear spindle is screwed up by adopting the screwing mode, because the diameters of the studs at two ends of the marine diesel engine gear spindle are the same, the torques applied by pulling the blind hole nuts are equal, and even if the blind hole nuts are pulled to slip, whether the studs at one end of the marine diesel engine gear spindle are screwed up in the threaded holes of the rack is difficult to judge. In addition, when the blind hole nut is removed, a stud at one end of the gear spindle of the marine diesel engine is easy to unscrew, and the assembling quality of the marine diesel engine is affected.
Disclosure of Invention
The invention aims to provide a tool and a method for screwing a gear spindle of a marine diesel engine, and the assembling quality of the marine diesel engine is improved.
The invention is realized by the following technical scheme:
a marine diesel gear mandrel tightening tool comprises a round nut assembly and an outer hexagonal compression bolt, wherein the round nut assembly comprises a special round nut and an outer hexagonal nut fixed on one side of the special round nut in a welding mode, the inner thread of the outer hexagonal nut is smaller than that of the special round nut, and the axial lead of the outer hexagonal nut is coaxial with that of the special round nut; a stud at one end of the marine diesel engine gear spindle is screwed into a threaded hole of the rack, and a special round nut is screwed on a stud at the other end of the marine diesel engine gear spindle; the outer hexagonal compression bolt is screwed into the outer hexagonal nut, and the end of the outer hexagonal compression bolt extending into the special round nut is tightly pressed on the end surface of the other stud of the marine diesel engine gear spindle.
The object of the invention is further achieved by the following technical measures.
Furthermore, the coaxiality tolerance between the shaft axis of the outer hexagonal nut and the shaft axis of the special round nut is 0.60-0.80 mm. The ratio of the diameter D of the external thread of the outer hexagonal compression bolt to the diameter D of the internal thread of the special round nut is as follows: D/D =0.65 ~ 0.75. The ratio of the length L of the end of the outer hexagonal compression bolt extending into the special round nut to the thickness H of the special round nut is as follows: L/H = 0.36 ~ 0.40.
A tightening method of a marine diesel engine gear spindle tightening tool comprises the following steps:
1) preparation before tool installation
Embedding a positioning boss at one end of a positioning sleeve into a threaded positioning counter bore of a rack, and accurately guiding a marine diesel engine gear spindle to be screwed into a threaded hole of the rack;
2) one end stud of the marine diesel engine gear spindle is preliminarily screwed into the corresponding rack threaded hole
The method comprises the steps that a marine diesel engine gear spindle penetrates through a positioning sleeve, a stud at one end of the marine diesel engine gear spindle abuts against a corresponding rack threaded hole, and then an operator holds the other end of the marine diesel engine gear spindle by hand to screw the stud at one end of the marine diesel engine gear spindle into the corresponding rack threaded hole until the stud is not screwed by hand;
3) installing the tool on a stud at the other end of a gear spindle of the marine diesel engine
Screwing an outer hexagonal compression bolt into a special round nut of the round nut assembly, wherein the length L of the end of the outer hexagonal compression bolt extending into the special round nut reaches 0.36-0.40 of the thickness H of the special round nut; then screwing a special round nut of the round nut component on a stud at the other end of the marine diesel engine gear spindle, and rotating the round nut component by an operator hand disc, wherein the round nut component moves downwards along the stud at the other end of the marine diesel engine gear spindle, so that the end head of the outer hexagonal compression bolt presses the end head of the stud at the other end of the marine diesel engine gear spindle;
4) one end of the marine diesel engine gear spindle is screwed in the corresponding rack threaded hole through a stud
According to the set torque, an outer hexagon nut of the round nut assembly is pulled clockwise by a torque wrench, the outer hexagon nut drives a special round nut to rotate and simultaneously drives a marine diesel engine gear spindle to rotate, relative rotation cannot occur between the special round nut and the other end of the marine diesel engine gear spindle, the special round nut and the other end of the marine diesel engine gear spindle are pulled until the torque wrench slips, and at the moment, a stud at one end of the marine diesel engine gear spindle is screwed in a corresponding rack threaded hole;
5) demounting tool
Turning the head of the outer hexagonal compression bolt anticlockwise by using an open spanner, and loosening the outer hexagonal compression bolt; the operator then turns the round nut assembly counterclockwise, disengaging it from the stud on the other end of the marine diesel gear spindle.
The device of the invention consists of a special round nut, an outer hexagon nut and an outer hexagon compression bolt, only has 3 parts, and has very simple structure. The end of the outer hexagonal compression bolt is tightly pressed on the end surface of the other stud of the marine diesel engine gear spindle, and the outer hexagonal compression bolt, the marine diesel engine gear spindle and the round nut assembly are fixedly connected into a whole by using static friction force generated by pressing. Therefore, the torque wrench is used for clockwise wrenching the outer hexagon nut of the round nut component, the outer hexagon nut drives the special round nut to rotate, meanwhile, the marine diesel engine gear spindle is driven to rotate through the outer hexagon compression bolt, only a small torque needs to be applied to the outer hexagon nut, the diesel engine gear spindle can be driven to rotate, and a stud of the marine diesel engine gear spindle is enabled to be screwed up in the rack threaded hole. When the gear runs, the gear spindle of the diesel engine cannot be loosened, and the assembling quality of the marine diesel engine gear transmission system is improved. The tightening method of the invention reduces the labor intensity of operators, improves the production efficiency and effectively solves the problem that the stud at one end of the marine diesel engine gear spindle is difficult to be tightened in the threaded hole of the frame.
Advantages and features of the present invention will be illustrated and explained by the following non-restrictive description of preferred embodiments thereof, given by way of example only with reference to the accompanying drawings.
Drawings
FIG. 1 is a partial view of a marine medium speed diesel engine gear drive housing;
FIG. 2 is a block diagram of the apparatus of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings and an embodiment of a marine diesel engine of the type L27/38.
As shown in fig. 2, the present embodiment includes a round nut assembly 1 and an outer hexagonal pressing bolt 2, the round nut assembly 1 includes a special round nut 11 and an outer hexagonal nut 12 welded and fixed on the right side of the special round nut 11, the internal thread of the outer hexagonal nut 12 is smaller than the internal thread of the special round nut 11, the axial lead of the outer hexagonal nut 12 is coaxial with the axial lead of the special round nut 11, and the coaxiality tolerance is 0.60-0.80 mm, so that when the outer hexagonal nut 12 is pulled, the special round nut 11 can drive a stud 601 at one end of the marine diesel gear spindle 60 to be screwed into the rack threaded hole 202. The special round nut 11 is screwed on the other stud 603 of the marine diesel gear spindle 60, the outer hexagonal compression bolt 2 is screwed into the outer hexagonal nut 12, and the end of the outer hexagonal compression bolt 2 extending into the special round nut 11 is compressed on the end face of the stud 603 at the other end of the marine diesel gear spindle 60. The ratio of the external thread diameter D of the external hexagonal pressure bolt 2 of the present embodiment to the internal thread diameter D of the special round nut 11: D/D =0.7, the internal thread diameter D of the special round nut 11 is M39 × 1.5, and the external thread diameter D of the outer hexagonal compression bolt 2 is M27. The ratio of the length L of the end of the outer hexagonal compression bolt 2 extending into the special round nut 11 to the thickness H of the special round nut is as follows: L/H = 0.38 and L =15mm, so that the special round nut 11 and the other stud 603 of the marine diesel gear spindle 60 have enough threaded connection length, and the end of the outer hexagonal compression bolt 2 is conveniently compressed on the end face of the other stud 603 of the marine diesel gear spindle 60.
A tightening method of a marine diesel engine gear spindle tightening tool comprises the following steps:
1) preparation before tool installation
The positioning boss 101 at one end of the positioning sleeve 10 is embedded into the threaded positioning counterbore 201 of the frame, and the marine diesel gear spindle 60 to be screwed into the threaded hole 202 of the frame is accurately guided.
2) One end stud 601 of the marine diesel gear spindle 60 is preliminarily screwed into the corresponding frame threaded hole 202
The marine diesel gear spindle 60 is inserted through the positioning sleeve 10, so that the stud 601 at one end of the marine diesel gear spindle 60 abuts against the corresponding frame threaded hole 202, and then the operator holds the other end of the marine diesel gear spindle 60 by hand to screw the stud 601 at one end of the marine diesel gear spindle 60 into the corresponding frame threaded hole 202 until the manual screwing is stopped.
3) The tool is arranged on a stud 603 at the other end of the marine diesel gear spindle 60
Screwing the outer hexagonal compression bolt 2 into the special round nut 11 of the round nut component 1, wherein the length L of the end of the outer hexagonal compression bolt 2 extending into the special round nut 11 reaches 0.38 of the thickness H of the special round nut, namely 15 mm; then, the special round nut 11 of the round nut component 1 is screwed on the stud 603 at the other end of the marine diesel gear spindle 60, an operator rotates the round nut component 1 by hand, the round nut component 11 moves towards the direction of the positioning sleeve 10 along the stud 603 at the other end of the marine diesel gear spindle 60, so that the end of the outer hexagonal compression bolt 2 presses the end of the stud 603 at the other end of the marine diesel gear spindle 60, static friction force generated by compressing the marine diesel gear spindle 60 through the outer hexagonal compression bolt 2 and fixing action of threaded connection of the round nut component 11 and the stud 603 at the other end of the marine diesel gear spindle 60 connect the outer hexagonal compression bolt 2, the round nut component 11 and the marine diesel gear spindle 60 into a whole.
4) One end stud 601 of the marine diesel gear spindle 60 is screwed in the corresponding frame threaded hole 202
According to the set torque, the outer hexagon nut 12 of the round nut component 1 is pulled clockwise by a torque wrench, the outer hexagon nut 12 drives the special round nut 11 to rotate, and simultaneously drives the marine diesel engine gear spindle 60 to rotate. Because the outer hexagonal compression bolt 2, the round nut component 11 and the marine diesel gear spindle 60 are connected into a whole, the special round nut 11 and the other end of the marine diesel gear spindle 60 cannot rotate relatively. The torque wrench is pulled to slip, and at this time, it is ensured that the stud 601 at one end of the marine diesel gear spindle 60 is screwed into the corresponding frame threaded hole 202.
5) Demounting tool
The head of the outer hexagonal compression bolt 2 is pulled anticlockwise by an open end wrench, and the outer hexagonal compression bolt 2 is loosened. Since the torque for wrenching the open end wrench is less than the torque for wrenching the round nut screwed on the marine diesel gear spindle 60 by the torque wrench, the marine diesel gear spindle 60 will not loosen and follow up rotation and then the operator will rotate the round nut assembly 1 counterclockwise to separate it from the stud 603 at the other end of the marine diesel gear spindle 60.
The invention can be used for screwing and fixing studs at one end of double-end screws with various specifications.
In addition to the above embodiments, the present invention may have other embodiments. All the technical solutions adopting equivalent substitution or equivalent transformation are within the protection scope of the present invention.
Claims (5)
1. The marine diesel gear spindle tightening tool is characterized by comprising a round nut assembly and an outer hexagonal compression bolt, wherein the round nut assembly comprises a special round nut and an outer hexagonal nut fixed on one side of the special round nut in a welding mode, the inner thread of the outer hexagonal nut is smaller than that of the special round nut, and the axial lead of the outer hexagonal nut is coaxial with that of the special round nut; a stud at one end of the marine diesel engine gear spindle is screwed into a threaded hole of the rack, and a special round nut is screwed on a stud at the other end of the marine diesel engine gear spindle; the outer hexagonal compression bolt is screwed into the outer hexagonal nut, and the end of the outer hexagonal compression bolt extending into the special round nut is tightly pressed on the end face of the other threaded end of the marine diesel engine gear spindle.
2. The marine diesel gear spindle tightening tool according to claim 1, wherein a coaxiality tolerance between an axis of the outer hexagonal nut and an axis of the special round nut is 0.60-0.80 mm.
3. The marine diesel gear spindle tightening tool according to claim 1, wherein the ratio of the diameter D of the external thread of the external hexagonal compression bolt to the diameter D of the internal thread of the special round nut is as follows: D/D =0.65 ~ 0.75.
4. The marine diesel gear spindle tightening tool according to claim 1, wherein the ratio of the length L of the end of the outer hexagonal compression bolt extending into the special round nut to the thickness H of the special round nut is: L/H = 0.36 ~ 0.40.
5. The tightening method of the marine diesel gear spindle tightening tool according to claim 1, comprising the following steps:
1) preparation before tool installation
Embedding a positioning boss at one end of a positioning sleeve into a threaded positioning counter bore of a rack, and accurately guiding a marine diesel engine gear spindle to be screwed into a threaded hole of the rack;
2) one end stud of the marine diesel engine gear spindle is preliminarily screwed into the corresponding rack threaded hole
The method comprises the steps that a marine diesel engine gear spindle penetrates through a positioning sleeve, a stud at one end of the marine diesel engine gear spindle abuts against a corresponding rack threaded hole, and then an operator holds the other end of the marine diesel engine gear spindle by hand to screw the stud at one end of the marine diesel engine gear spindle into the corresponding rack threaded hole until the stud is not screwed by hand;
3) installing the tool on a stud at the other end of a gear spindle of the marine diesel engine
Screwing an outer hexagonal compression bolt into a special round nut of the round nut assembly, wherein the length L of the end of the outer hexagonal compression bolt extending into the special round nut reaches 0.36-0.40 of the thickness H of the special round nut; then screwing a special round nut of the round nut component on a stud at the other end of the marine diesel engine gear spindle, rotating the round nut component by an operator hand disc, and moving the round nut component along the stud at the other end of the marine diesel engine gear spindle towards the direction of the positioning sleeve so that the end head of the outer hexagonal compression bolt presses the end head of the stud at the other end of the marine diesel engine gear spindle;
4) one end of the marine diesel engine gear spindle is screwed in the corresponding rack threaded hole through a stud
According to the set torque, an outer hexagon nut of the round nut assembly is pulled clockwise by a torque wrench, the outer hexagon nut drives a special round nut to rotate and simultaneously drives a marine diesel engine gear spindle to rotate, relative rotation cannot occur between the special round nut and the other end of the marine diesel engine gear spindle, the special round nut and the other end of the marine diesel engine gear spindle are pulled until the torque wrench slips, and at the moment, a stud at one end of the marine diesel engine gear spindle is screwed in a corresponding rack threaded hole;
5) demounting tool
Turning the head of the outer hexagonal compression bolt anticlockwise by using an open spanner, and loosening the outer hexagonal compression bolt; the operator then turns the round nut assembly counterclockwise, disengaging it from the stud on the other end of the marine diesel gear spindle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010823824.4A CN111843928A (en) | 2020-08-17 | 2020-08-17 | Marine diesel engine gear spindle screwing tool and screwing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010823824.4A CN111843928A (en) | 2020-08-17 | 2020-08-17 | Marine diesel engine gear spindle screwing tool and screwing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111843928A true CN111843928A (en) | 2020-10-30 |
Family
ID=72969086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010823824.4A Pending CN111843928A (en) | 2020-08-17 | 2020-08-17 | Marine diesel engine gear spindle screwing tool and screwing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111843928A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3523227A1 (en) * | 1985-06-28 | 1987-01-02 | Emuk Gmbh | Accessory tool for screwing in stud bolts and the like |
| CN202805110U (en) * | 2012-09-28 | 2013-03-20 | 首都航天机械公司 | Rapid fastening and disengaging device of double-end stud |
| CN203003792U (en) * | 2011-12-22 | 2013-06-19 | 许继集团有限公司 | Stud dismounting tool |
| CN103978461A (en) * | 2014-06-03 | 2014-08-13 | 安徽江淮汽车股份有限公司 | Tightening tool acting on stud bolt |
| CN106695308A (en) * | 2015-08-25 | 2017-05-24 | 常州兰翔机械有限责任公司 | Assembly fixture for double-end stud, and working method thereof |
| CN212351865U (en) * | 2020-08-17 | 2021-01-15 | 中船动力有限公司 | Marine diesel gear mandrel tightening tool |
-
2020
- 2020-08-17 CN CN202010823824.4A patent/CN111843928A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3523227A1 (en) * | 1985-06-28 | 1987-01-02 | Emuk Gmbh | Accessory tool for screwing in stud bolts and the like |
| CN203003792U (en) * | 2011-12-22 | 2013-06-19 | 许继集团有限公司 | Stud dismounting tool |
| CN202805110U (en) * | 2012-09-28 | 2013-03-20 | 首都航天机械公司 | Rapid fastening and disengaging device of double-end stud |
| CN103978461A (en) * | 2014-06-03 | 2014-08-13 | 安徽江淮汽车股份有限公司 | Tightening tool acting on stud bolt |
| CN106695308A (en) * | 2015-08-25 | 2017-05-24 | 常州兰翔机械有限责任公司 | Assembly fixture for double-end stud, and working method thereof |
| CN212351865U (en) * | 2020-08-17 | 2021-01-15 | 中船动力有限公司 | Marine diesel gear mandrel tightening tool |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8156820B2 (en) | Device and method for tightening a nut placed on a threaded end, and assembled washer and nut for such a device | |
| JP2001088045A (en) | Fastener device | |
| CN106002806A (en) | Universal turning tool for electric wrench | |
| CN212351865U (en) | Marine diesel gear mandrel tightening tool | |
| US6823574B2 (en) | Tool for installing wheel studs | |
| CN111843928A (en) | Marine diesel engine gear spindle screwing tool and screwing method | |
| CN201128131Y (en) | Slippage type moment spanners | |
| CN101244549A (en) | Stud-bolt assembling device | |
| CN110977873B (en) | Stud bolt mounting tool and use method thereof | |
| CN205703935U (en) | A kind of electric wrench universal rotational instrument | |
| CN111203824B (en) | Torque wrench and steel box girder high-strength bolt screwing process using same | |
| CN114310790A (en) | Assembling and disassembling device and method for interference thread anti-loosening screw sleeve | |
| CN213764798U (en) | Automatic screw up a device | |
| CN217292133U (en) | Double-end pointed tail ratchet wrench | |
| CN215548203U (en) | Tool clamp for assembling floating hoop valve seat | |
| CN219685446U (en) | Automatic screwing equipment | |
| CN220882138U (en) | Stud installation sleeve | |
| CN215746812U (en) | Marine diesel engine crankshaft and flywheel matching reaming tool | |
| CN110936329B (en) | Stud assembling device and using method thereof | |
| US20130047792A1 (en) | Spark Plug Removal Tool Apparatus | |
| CN218947530U (en) | Stud assembly and disassembly tools | |
| CN213259214U (en) | Impact wrench and overload prevention device thereof | |
| CN101075706A (en) | Co-shaft connector with clamping mechanism | |
| CN219788181U (en) | Spanner tool for round nut of compressor | |
| CN213702440U (en) | Double-end stud nut screwing device of wind generating set |
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 |