CN113958362A - Method for releasing adhesive tape of underground long-distance conveyor - Google Patents

Method for releasing adhesive tape of underground long-distance conveyor Download PDF

Info

Publication number
CN113958362A
CN113958362A CN202111273109.9A CN202111273109A CN113958362A CN 113958362 A CN113958362 A CN 113958362A CN 202111273109 A CN202111273109 A CN 202111273109A CN 113958362 A CN113958362 A CN 113958362A
Authority
CN
China
Prior art keywords
adhesive tape
rubber belt
vulcanization
belt
operation platform
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
Application number
CN202111273109.9A
Other languages
Chinese (zh)
Inventor
马家贵
杜华龙
杨福新
胡元彬
井辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chengdu Environmental Engineering Construction Co ltd
Original Assignee
Chengdu Environmental Engineering Construction Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Chengdu Environmental Engineering Construction Co ltd filed Critical Chengdu Environmental Engineering Construction Co ltd
Priority to CN202111273109.9A priority Critical patent/CN113958362A/en
Publication of CN113958362A publication Critical patent/CN113958362A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F13/00Transport specially adapted to underground conditions

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Belt Conveyors (AREA)

Abstract

The invention discloses a method for releasing a rubber belt of an underground long-distance conveyor, which comprises the following steps: s1Building a wellhead adhesive tape vulcanization operation platform at the wellhead position; s2The adhesive tape is pulled into the transportation channel by a traction device, and the vulcanization connection of the vulcanization joint of the upper tape and the lower tape of the adhesive tape is completed through a vulcanization operation platform while the adhesive tape is pulled; s3And building an in-well vulcanization operation platform in the conveying channel, connecting and closing the upper belt and one end of the lower belt through the in-well vulcanization operation platform, tensioning the rubber belt, and completing vulcanization work of the last joint of the rubber belt through the wellhead vulcanization operation platform to enable the upper belt and the lower belt to form a closed-loop connection state. The method for discharging the rubber belt of the underground long-distance conveyor can realize the streamlined construction operation of discharging and vulcanizing the rubber belt, greatly improve the efficiency of discharging the rubber belt and effectively reduce the occupied time of a main adit transportation channel.

Description

Method for releasing adhesive tape of underground long-distance conveyor
Technical Field
The invention relates to the technical field of rubber belt release of a long-distance rubber belt conveyor in a coal mine, in particular to a rubber belt release method of a long-distance rubber belt conveyor in the coal mine.
Background
The long-distance rubber belt transportation for the coal mine has the characteristics of quick and continuous transportation, uniformity, high production rate, low consumption, low operation cost, safe and reliable use, convenient maintenance, capability of realizing a curve or double-layer reverse transportation function through special design and the like, and is widely applied to places such as large and medium-sized mine shafts, transportation roadways, transportation crossroads and the like.
In coal mines, due to the limitation of the main adit and the adhesive tape, the adhesive tape is difficult to discharge:
(1) the adhesive tape of the long-distance conveyor is extremely long, so that the weight of the adhesive tape is large and reaches several tons or dozens of tons, the adhesive tape cannot be completely applied in a manual mode, the working surface is narrow, and the arrangement of traction power is extremely difficult;
(2) the main adit is narrow in area and is a production transportation and emergency main channel of a mine, so that underground vulcanization and adhesive tape application cannot occupy the main transportation channel of a mine for a long time in the application process;
(3) if the vulcanizing working platform is arranged in the main adit, the workload is large, the production scheduling and coordination are difficult, continuous operation cannot be realized, the working efficiency is low, and the influence on the construction period is large;
(4) the vulcanizing process of the adhesive tape has strict requirements, the potential safety hazard and the influencing factors (such as time, temperature and humidity) of the vulcanization in the main adit are more, and the quality control is difficult.
Disclosure of Invention
In order to solve the problems, the invention provides a method for discharging the rubber belt of the underground long-distance conveyor, which can realize the streamlined construction operation of discharging and vulcanizing the rubber belt, greatly improve the efficiency of discharging the rubber belt and effectively reduce the occupied time of a main adit transportation channel.
The invention specifically adopts the following technical scheme for realizing the purpose:
a method for applying a rubber belt of a long-distance underground conveyor comprises the following steps:
S1building a wellhead adhesive tape vulcanization operation platform at the wellhead position;
S2using a traction device to apply the adhesive tapeThe rubber belt is pulled into the transportation channel, and the vulcanization connection of the vulcanization joint of the upper belt and the lower belt of the rubber belt is completed through the vulcanization operation platform while the rubber belt is pulled;
S3and building an in-well vulcanization operation platform in the conveying channel, connecting and closing the upper belt and one end of the lower belt through the in-well vulcanization operation platform, tensioning the rubber belt, and completing vulcanization work of the last joint of the rubber belt through the wellhead vulcanization operation platform to enable the upper belt and the lower belt to form a closed-loop connection state.
Further, in the step S1And the well mouth rubber belt vulcanization operation platform is erected on a branch road of which the well mouth position avoids the main transportation channel.
Further, the step S2The traction device comprises a prop pulling winch, a locomotive driving the prop pulling winch to move, a traction rope connecting the rubber belt and the prop pulling winch and a guide pulley, wherein the prop pulling winch is fixed on the rail flat car, one end of the traction rope is connected with the end of the rubber belt, and the other end of the traction rope is connected with the prop pulling winch through the guide pulley.
Furthermore, two ends of the track flat car are fixed on the track by car stoppers, and single hydraulic supports are used for fixing between four corners of the flat car and the top of the main adit.
Furthermore, a resin anchor rod is driven into the side wall of the transportation channel, the guide pulley is fixed on the resin anchor rod through a steel wire rope, an adjusting hoist is arranged on the steel wire rope, and the position of the guide pulley is adjusted through the adjusting hoist when the position of the traction device is adjusted each time.
Furthermore, the number of the guide pulleys is 2, one guide pulley is positioned on the rubber belt side, the other guide pulley is positioned on the track side, when the rubber belt is pulled, the center line of the guide pulley on the rubber belt side is basically consistent with that of the long-distance conveyor, the center line of the guide pulley of the rail car is basically consistent with that of the track, and meanwhile, the included angle between the steel wire rope and the side wall of the transportation channel is not more than 45 degrees.
Furthermore, a clamping ring is arranged at one end of the traction rope, a traction head is connected to the end of the adhesive tape in an anchoring mode, the clamping ring is connected with the traction head, and the prop pulling winch is detachably fixed on the track flat car through a bolt.
Further, the step S2And when the adhesive tape is vulcanized and connected, the lower tape is connected firstly, and then the upper tape is connected, and the processes are sequentially and circularly carried out.
The invention has the following beneficial effects:
1. the adhesive tape is vulcanized at a fixed point, the working efficiency is improved, the influence of the working environment on the quality of the joint is reduced, and the quality of the joint vulcanization is improved, particularly, the vulcanization work of the adhesive tape is carried out on a wellhead adhesive tape vulcanization operation platform outside a wellhead, only one vulcanization connection needs to be carried out in a transportation channel finally, 2 adhesive tape vulcanization operation platforms need to be set up in the whole application process, the workload of setting up the vulcanization platforms at multiple points is reduced, the working environment of the adhesive tape vulcanization is not interfered by external factors, meanwhile, the vulcanization work in the transportation channel is basically not needed, the comfort level of workers is increased, the labor intensity of the workers is reduced, and the reliability of the working quality is improved;
2. the occupied time of the main adit transportation channel is reduced, the traction device is convenient and quick to move and remove in the adhesive tape application process, the channel can be made within half an hour only by removing the traction device and the traction rope in case of emergency, the mutual interference with the safety production of an ore side is reduced, and both sides are more convenient;
3. the adhesive tape is discharged to realize streamlined operation, and the working efficiency is further improved.
Drawings
FIG. 1 is a schematic view of tape application;
Detailed Description
In the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed" and "in communication" are to be construed broadly, e.g., as meaning in fixed communication, in removable communication, or in integral communication; either mechanically or electrically; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Examples
The embodiment provides a method for applying a rubber belt to an underground long-distance conveyor, which comprises the steps of erecting a rubber belt vulcanization operation platform on a branch road which avoids a main transportation channel of a mine at a wellhead position, completing vulcanization operation of all vulcanization joints of an upper belt and a lower belt of the whole section of the rubber belt from the wellhead to a tail part of the long-distance conveyor, finally, connecting and closing the vulcanization of the end parts of the upper belt and the lower belt at the tail part of the long-distance conveyor, and completing vulcanization operation of the last joint of the whole rubber belt in a nose room after the rubber belt in the well is tensioned.
Specifically, referring to fig. 1, the method for applying the adhesive tape to the long-distance underground conveyor of the embodiment includes the following steps:
S1setting up a wellhead adhesive tape vulcanization operation platform at a wellhead position, wherein the wellhead adhesive tape vulcanization operation platform is preferably set up at a turnout of the wellhead position avoiding the main transportation channel, so that in the whole adhesive tape application period, the wellhead vulcanization operation platform does not influence the use of the main transportation channel, namely the wellhead vulcanization operation platform can be detached after the application process of the whole adhesive tape is completed;
S2the adhesive tape is pulled into the conveying channel by using a traction device, and the vulcanization connection of the vulcanization joint of the upper tape and the lower tape of the adhesive tape is completed through a vulcanization operation platform while the adhesive tape is pulled, and when the adhesive tape is vulcanized and connected, the lower tape can be connected firstly, then the upper tape can be connected, and the processes are sequentially and circularly carried out;
of course, before vulcanization, the tape can be transported and fixed as follows: the adhesive tape is placed on a flat car by a travelling crane or a crane for the storehouse and is firmly fixed, and is slowly transported to the vicinity of a vulcanization platform at a distance of 20-30m by an electric locomotive or a manual work. And then, a chain hoist is matched with a door-shaped frame to lift the rubber ring at the head end of the rubber belt machine from the flat car and place the rubber ring on one belt placing frame for temporary fixation, the rubber ring at the well head end is lifted by the door-shaped frame, the other belt placing frame is fixed on the original flat car, the belt placing frame is placed on the rubber ring at the well head end, the height is adjusted, the rubber ring is manually coiled and manually pushed to the end of the vulcanizing platform, the rubber ring is continuously coiled and manually coiled and placed between the vulcanizing platform and the door-shaped frame, and the end of the coiled rubber belt is placed on the vulcanizing platform, so that the vulcanizing operation can be carried out.
S3And building an in-well vulcanization operation platform in the conveying channel, connecting and closing the upper belt and one end of the lower belt through the in-well vulcanization operation platform, tensioning the rubber belt, and completing vulcanization work of the last joint of the rubber belt through the wellhead vulcanization operation platform to enable the upper belt and the lower belt to form a closed-loop connection state. After the upper belt and the lower belt are distributed, a roller of a long-distance conveyor with the lower belt head of the tail bypassing the tail is pulled to the upper belt position, an in-well vulcanization working platform is set up near the tail roller to complete the vulcanization joint of the tail rubber belt, and the vulcanization equipment is immediately dismantled and transported out of the well after the completion. The rubber belt of the machine head is wound around a driving and tensioning device of a long-distance conveyor, the rubber belt is adjusted and tensioned by the tensioning device, and the rubber belt of the machine head is vulcanized, bonded and sealed into a ring after the residual belt is cut off, so that the vulcanization joint work of the whole rubber belt is completed. Before the tail joint is vulcanized, the tension device applies tension to the adhesive tape until the tension of the adhesive tape meets the requirement, when the two tape heads are overlapped for bonding, the tensioning roller is arranged in the middle of the tensioning stroke, the length of the bonded annular tape needs to be kept with allowance, and the allowance is based on that the tensioning roller basically falls on the designed position after the annular adhesive tape is tensioned.
Specifically, the step S2The traction device comprises a prop pulling winch, a locomotive driving the prop pulling winch to move, a traction rope connecting the rubber belt and the prop pulling winch and a guide pulley, wherein the prop pulling winch is fixed on the rail flat car, one end of the traction rope is connected with the end of the rubber belt, and the other end of the traction rope is connected with the prop pulling winch through the guide pulley. The underground coal mine is provided with a rail transport lane and a rubber belt transport lane, wherein the locomotive on the rail of the rail transport lane is used for assisting the release of the rubber belt.
In the whole dispensing process, the pulling rope is pulled by the prop pulling winch, so that the adhesive tape is dragged to move to dispense the adhesive tape, specifically, the pulling device is moved forward once at a certain distance, for example, 400m, when the pulling device is moved, the prop pulling winch is started to drive the adhesive tape to move for 400m, and the continuous circulation is performed to drag the adhesive tape to dispense. Of course, care should be taken in this process that the carriage needs to be positioned with respect to the tape end more than the distance each time the tape is moved.
In a possible implementation mode, two ends of the track flat car are fixed on the track through car stoppers, and single hydraulic supports are used for fixing between four corners of the flat car and the top of the main adit, so that the situation that the prop-returning winch displaces in the process of dragging the adhesive tape to move can be avoided, and meanwhile, the situation that the track flat car turns on one side due to the dragging acting force can also be avoided.
As a concrete mode of setting up of direction coaster, it has the resin stock to squeeze into on the lateral wall of haulage passageway, and it is unanimous with the distance that drags the sticky tape at every turn to squeeze into the distance, the direction coaster passes through wire rope to be fixed on the resin stock, be provided with the adjustment calabash on the wire rope, when adjusting draw gear's position at every turn, through the position of adjustment calabash adjustment direction coaster, the adjustment calabash can be hand chain calabash, and behind the whole draw gear of every turn, all can adjust the position of direction coaster through the adjustment calabash, makes it can drive better and leads the haulage rope, makes it drag the sticky tape and remove along established route and discharge.
In a possible embodiment, 2 guide pulleys are arranged, one guide pulley is positioned on the side of the adhesive tape, namely at the position where the adhesive tape is distributed on the long-distance conveyor, the other guide pulley is positioned on the side of the track, namely above the track, when the adhesive tape is pulled, the guide pulleys on the side of the adhesive tape are basically consistent with the central line of the long-distance conveyor, the guide pulleys of the rail car are basically consistent with the central line of the track, and meanwhile, the included angle between the steel wire rope and the side wall of the transportation channel is less than or equal to 45 degrees, so that the moving track of the adhesive tape is well limited, the application of the adhesive tape is effectively finished, and the influence on the balance of the rail flat car can be reduced.
In the actual application process, the application of the adhesive tape is not completed at one time, and meanwhile, the main conveying channel also bears the important conveying function, the tape application is not finished once or two days, so that the time is given for the ore side to use the transportation channel, for the embodiment, a snap ring is arranged at one end of the traction rope, the end head of the adhesive tape is connected with a traction head in an anchoring way, the snap ring is connected with the traction head, the prop pulling winch is detachably fixed on the track flat car through a bolt, a hook and other objects can be arranged on the traction head to be detachably connected with the snap ring, when a main transportation channel needs to be made for a main mine for use each time, the clamping ring is directly separated from the traction head, and after the traction rope is recovered to the prop drawing winch, the locomotive can be used for quickly dragging the column pulling winch occupying the track into the turnout, and the main transportation channel can be made for the main mine as long as half an hour is short.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.

Claims (8)

1. A method for applying a rubber belt of a long-distance underground conveyor is characterized by comprising the following steps:
S1building a wellhead adhesive tape vulcanization operation platform at the wellhead position;
S2the adhesive tape is pulled into the transportation channel by a traction device, and the vulcanization connection of the vulcanization joint of the upper tape and the lower tape of the adhesive tape is completed through a vulcanization operation platform while the adhesive tape is pulled;
S3and building an in-well vulcanization operation platform in the conveying channel, connecting and closing the upper belt and one end of the lower belt through the in-well vulcanization operation platform, tensioning the rubber belt, and completing vulcanization work of the last joint of the rubber belt through the wellhead vulcanization operation platform to enable the upper belt and the lower belt to form a closed-loop connection state.
2. The method of claim 1, wherein step S is performed by a method of applying a tape to a long-reach conveyor downhole1And the well mouth rubber belt vulcanization operation platform is erected on a branch road of which the well mouth position avoids the main transportation channel.
3. The method of claim 2 for downhole long-haul conveyor belt application, comprisingCharacterized in that said step S2The traction device comprises a prop pulling winch, a locomotive driving the prop pulling winch to move, a traction rope connecting the rubber belt and the prop pulling winch and a guide pulley, wherein the prop pulling winch is fixed on the rail flat car, one end of the traction rope is connected with the end of the rubber belt, and the other end of the traction rope is connected with the prop pulling winch through the guide pulley.
4. The method of claim 3 wherein the ends of the track platform are secured to the track with car stoppers and individual hydraulic struts are used to secure between the corners of the platform and the top of the main adit.
5. The method for applying the rubber belt to the underground long-distance conveyor as claimed in claim 4, wherein a resin anchor rod is driven into the side wall of the transportation channel, the guide pulley is fixed to the resin anchor rod through a steel wire rope, an adjusting block is arranged on the steel wire rope, and the position of the guide pulley is adjusted through the adjusting block each time the position of the traction device is adjusted.
6. The method for applying the rubber belt to the underground long-distance conveyor as claimed in claim 5, wherein the number of the guide pulleys is 2, one guide pulley is positioned on the rubber belt side, the other guide pulley is positioned on the track side, when the rubber belt is pulled, the guide pulley on the rubber belt side is substantially consistent with the central line of the long-distance conveyor, the guide pulley on the track car is substantially consistent with the central line of the track, and the included angle between the steel wire rope and the side wall of the transportation channel is less than or equal to 45 degrees.
7. The method for applying adhesive tape to a downhole long-distance conveyor according to claim 6, wherein a snap ring is provided at one end of the pulling rope, the end of the adhesive tape is anchored with a pulling head, the snap ring is connected with the pulling head, and the prop pulling winch is detachably fixed on the rail flat car through a bolt.
8. Downhole long distance transport according to claim 2Method for applying machine-made adhesive tape, characterized in that said step S2And when the adhesive tape is vulcanized and connected, the lower tape is connected firstly, and then the upper tape is connected, and the processes are sequentially and circularly carried out.
CN202111273109.9A 2021-10-29 2021-10-29 Method for releasing adhesive tape of underground long-distance conveyor Pending CN113958362A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111273109.9A CN113958362A (en) 2021-10-29 2021-10-29 Method for releasing adhesive tape of underground long-distance conveyor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111273109.9A CN113958362A (en) 2021-10-29 2021-10-29 Method for releasing adhesive tape of underground long-distance conveyor

Publications (1)

Publication Number Publication Date
CN113958362A true CN113958362A (en) 2022-01-21

Family

ID=79468394

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111273109.9A Pending CN113958362A (en) 2021-10-29 2021-10-29 Method for releasing adhesive tape of underground long-distance conveyor

Country Status (1)

Country Link
CN (1) CN113958362A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0542615A (en) * 1991-08-09 1993-02-23 Bando Chem Ind Ltd Device and method for vulcanizing endless rubber belt
JPH0952233A (en) * 1995-08-09 1997-02-25 Bando Chem Ind Ltd Apparatus and method for vulcanizing endless rubber belt
CN103009037A (en) * 2012-12-14 2013-04-03 太原理工大学 Replacing device and replacing method for belt conveyor rubber belt
CN106743095A (en) * 2017-01-24 2017-05-31 中煤第三建设集团机电安装工程有限责任公司 Method for replacing rubber belt surface of inclined shaft belt conveyor
CN111516289A (en) * 2020-04-30 2020-08-11 五冶集团上海有限公司 Vulcanization connection method for conveying belt joint of long-distance belt conveyor
CN112320212A (en) * 2020-11-11 2021-02-05 江苏省矿业工程集团有限公司 Mechanized continuous quick belt replacing device and process for main inclined shaft belt conveyor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0542615A (en) * 1991-08-09 1993-02-23 Bando Chem Ind Ltd Device and method for vulcanizing endless rubber belt
JPH0952233A (en) * 1995-08-09 1997-02-25 Bando Chem Ind Ltd Apparatus and method for vulcanizing endless rubber belt
CN103009037A (en) * 2012-12-14 2013-04-03 太原理工大学 Replacing device and replacing method for belt conveyor rubber belt
CN106743095A (en) * 2017-01-24 2017-05-31 中煤第三建设集团机电安装工程有限责任公司 Method for replacing rubber belt surface of inclined shaft belt conveyor
CN111516289A (en) * 2020-04-30 2020-08-11 五冶集团上海有限公司 Vulcanization connection method for conveying belt joint of long-distance belt conveyor
CN112320212A (en) * 2020-11-11 2021-02-05 江苏省矿业工程集团有限公司 Mechanized continuous quick belt replacing device and process for main inclined shaft belt conveyor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
何坤安: "煤矿井下大倾角输送机分段胶带运输与整体展放施工技术", 安装, 15 July 2015 (2015-07-15), pages 1 - 2 *

Similar Documents

Publication Publication Date Title
CN106477244B (en) Automatic telescopic belt conveyor
CN106697723B (en) A kind of method of coal mine rubber belt conveyer replacement adhesive tape
CN101934915A (en) Method for replacing rubber belt by long-distance steel cord rubber belt conveyor
CN207792533U (en) Cableway applied to mountainous region construction
CN108974772B (en) Method for replacing rubber belt of rubber belt conveyor of underground main roadway
CN106743095A (en) Method for replacing rubber belt surface of inclined shaft belt conveyor
CN103863955B (en) From introduction system and have this tower machine from introduction system
CN112320212A (en) Mechanized continuous quick belt replacing device and process for main inclined shaft belt conveyor
CN105460759A (en) Method for replacing tail rope of main well winch
CN110002343B (en) Self-driven urban underground prefabricated comprehensive pipe gallery laying hoisting machine and construction method
CN202245865U (en) Head wheel hoisting device of sintering machine
CN113958362A (en) Method for releasing adhesive tape of underground long-distance conveyor
CN212475874U (en) Bridge cable crane system
CN108643058A (en) Anchor after cable crane main rope cross sliding type
CN102344086B (en) Method for replacing lifting ropes of multi-rope frictional geared winch
CN208330406U (en) Mechanical be laid with of earth water-proof plate and two lining longitudinal reinforcements uses tunnel trolley
CN208380626U (en) A kind of Inclined Full-mechanized Mining Face equipment rail transport device
CN110409233A (en) A kind of track-laying machine of coal mine roadway and its method of laying a railway track
CN110697571A (en) Single-guide-beam descending type beam feeding device and beam feeding method thereof
CN214692832U (en) Steel wire rope replacing system of mine hoisting equipment
CN104386602A (en) Inclined roadway trackless auxiliary transportation method and device
CN202089666U (en) Inclined drift pedestrian walking aid
CN108100586A (en) From lift cableway conveyor
CN104528506B (en) Mine hoist and unhooking test method thereof
CN208150867U (en) Plate mine car turns device

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