CN213274006U - Square tube detection device - Google Patents

Square tube detection device Download PDF

Info

Publication number
CN213274006U
CN213274006U CN202022076401.9U CN202022076401U CN213274006U CN 213274006 U CN213274006 U CN 213274006U CN 202022076401 U CN202022076401 U CN 202022076401U CN 213274006 U CN213274006 U CN 213274006U
Authority
CN
China
Prior art keywords
pressing
fixedly connected
clamping
groove
clamping plate
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.)
Active
Application number
CN202022076401.9U
Other languages
Chinese (zh)
Inventor
吕亚宁
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.)
Jinan Meiteng Mechanical Equipment Co ltd
Original Assignee
Jinan Meiteng Mechanical Equipment 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 Jinan Meiteng Mechanical Equipment Co ltd filed Critical Jinan Meiteng Mechanical Equipment Co ltd
Priority to CN202022076401.9U priority Critical patent/CN213274006U/en
Application granted granted Critical
Publication of CN213274006U publication Critical patent/CN213274006U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • A Measuring Device Byusing Mechanical Method (AREA)

Abstract

The utility model discloses a square tube detection device, which comprises a mainboard, wherein a moving groove is arranged in the middle of the outer surface of the upper end of the mainboard and penetrates the upper part and the lower part of the mainboard, the upper end edge of the moving groove is provided with scales, a moving pressing structure is arranged at the position of the outer surface of the upper end of the mainboard, which is close to one side, the outer surface of the lower end of the moving pressing structure is provided with a first clamping plate, which is arranged at one side of the outer surface of the lower end of the mainboard, the detection size is adjusted by the movement of the first clamping plate, the moving pressing structure comprises a pressing handle, a rubber block, a pressing block and a pressure spring, through the cooperation of the above parts, a worker can push the pressing handle by pressing the thumb when using the device, thereby adjusting the position of the first clamping plate, loosening the pressing handle, the rubber block on the pressing block contacts the moving groove, the friction force between the rubber block and, the first clamping plate is fixed.

Description

Square tube detection device
Technical Field
The utility model belongs to the technical field of detection device technique and specifically relates to a side's pipe detection device is related to.
Background
The square tube is a tube with a square section, and the section of the tube has two shapes of a rectangle and a square. The square tube is a common section bar and has wide functions in the fields of construction, mechanical manufacturing and the like. The section size of the truncated square tube needs to be detected after primary manufacturing so as to achieve the purposes of uniform size and removal of unqualified products. For large batch of steel pipes, the detection efficiency of the traditional detection tool is low and the error is large. Therefore, a novel square tube detection device needs to be designed.
In realizing the utility model discloses the in-process, utility model people discover to have at least among the prior art as follows the problem and do not obtain solving: 1. after the square tube is produced, a worker measures the size of the square tube through the tape measure, although the operation of measuring through the tape measure is simple, the reading error of the tape measure is large, the square tube can be detected only by continuously changing the length of the tape measure for the square tubes with different sizes, the efficiency is low, and mistakes are easy to make; 2 after the square pipe is formed, residual metal particles are easy to exist on the surface of the square pipe, the metal particles can be attached to the outer wall of the square pipe, and if the square pipe is not cleaned, the detection result can be influenced.
Therefore, the square tube detection device is provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a square pipe detection device to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a square tube detection device comprises a main plate, wherein a moving groove is formed in the middle of the outer surface of the upper end of the main plate and penetrates through the upper part and the lower part of the main plate, rubber handles are fixedly connected to positions, close to the front side and the rear side of the moving groove, of the outer surface of the upper end of the main plate, scales are arranged on the edge of the upper end of the moving groove, a moving pressing structure is arranged at a position, close to one side, of the outer surface of the upper end of the main plate, a first clamping plate is arranged on the outer surface of the lower end of the moving pressing structure and located on one side of the outer surface of the lower end of the main plate, the other side of the outer surface;
the movable pressing structure comprises a pressing handle, a rubber block, a pressing block and a pressure spring, wherein the outer surface of the lower end of the pressing handle is fixedly connected with the pressing block, the rubber block is sleeved on the outer surface of the pressing block and is fixedly connected with the pressing block, the pressure spring is sleeved outside the pressing block, the upper end of the pressure spring is fixedly connected with the outer surface of the lower end of the rubber block, the lower end of the pressure spring is fixedly connected to the middle position of the outer surface of the upper end of the first clamping plate, and a positioning groove is formed in the middle position of the lower end of the pressing block;
a circular groove is formed in one side of the second clamping plate, a clamping groove is formed in the annular groove wall of the circular groove, a notch is formed in one side of the circular groove, and the notch is communicated with the clamping groove;
the cleaning mechanism comprises an elastic sheet, a button and a cleaning plate, the elastic sheet is fixedly connected to one end of the cleaning plate, and the button is fixedly connected to the outer surface of one side of the elastic sheet;
the clamping device comprises a main board, a clamping plate and a pressure spring, wherein the main board is provided with a front end and a rear end, the front end and the rear end of the main board are respectively provided with a clamping block, the clamping plate is provided with a clamping groove, the clamping block is arranged on the front end of the main board, the clamping plate is provided with a clamping groove, the front end and the rear end of the main board are respectively provided with a positioning pin, the clamping block is provided with a.
Through adopting above-mentioned technical scheme, thereby the staff who uses the device can press down the length that the handle adjusted first grip block and second grip block through the thumb and need the measuring size of selection needs, whether body and the cross-sectional dimension of judging the side pipe are qualified through the scale that sets up above the mainboard, the clamping face of the correspondence of two grip blocks is provided with the clearance cotton simultaneously, can clear up the body, impurity influence testing result above the body has been avoided like this, make testing result's accuracy improve greatly.
Preferably, the square tube detection device, the first clamping plate and the second clamping plate are both provided with a cleaning mechanism, and the structures of the first clamping plate and the second clamping plate are the same.
Through adopting above-mentioned technical scheme, two clearance mechanisms can clear up the both ends that the other side's pipe needs detected, have reduced detection error.
Preferably, a side's pipe detection device, the top of locating pin inserts in the constant head tank, and locating pin and constant head tank match each other and swing joint.
Through adopting above-mentioned technical scheme for the removal of first grip block just can be accomplished by the thumb to the handle, and whole process links up, the not hard up condition can not appear.
Preferably, the square tube detection device, the number of the clamping grooves is two, and the clamping grooves are symmetrically distributed by taking the center of the circular groove as a midpoint.
By adopting the technical scheme, the two clamping grooves can effectively clamp the cleaning plate
Preferably, the square tube detection device is provided with two elastic pieces which are symmetrically distributed by taking the center of the cleaning plate as a midpoint, and the elastic pieces are made of elastic metal and correspond to the two clamping grooves one to one in position.
Through adopting above-mentioned technical scheme, metal material's shell fragment can guarantee that deformation still has elasticity many times, and the shell fragment is identical with the draw-in groove, has improved fixed effect.
Preferably, a side pipe detection device, one side embedded connection of cleaning plate has the clearance cotton, and the clearance cotton is one extremely and the cementing is fixed with the cleaning plate level.
Through adopting above-mentioned technical scheme, the clearance cotton that sets up in grip block one side is removable to guarantee to have good clearance effect.
Compared with the prior art, the beneficial effects of the utility model are that:
the movable pressing structure is added on the main board, so that the first clamping board can move, the detection size is adjusted through the movement of the first clamping board, the movable pressing structure comprises a pressing handle, a rubber block, a pressing block and a pressure spring, and through the matching use of the components, a worker can push the pressing handle by pressing the pressing handle with a thumb when using the device, so that the position of the first clamping board is adjusted, the pressing handle is released, the rubber block on the pressing block is in contact with the moving groove, the friction force between the rubber block and the moving groove is increased through the pressure spring, the first clamping board is fixed, and then the reading is carried out through the scale corresponding to the pressing handle;
through adding clearance mechanism, first grip block and second grip block, one side of first grip block and second grip block all sets up clearance mechanism, the clearance mechanism and the laminating of side's pipe body of grip block one side are made through the motion of first grip block to the other side pipe before detecting, thereby remove this detection device and make clearance mechanism remove along with it and utilize clearance mechanism to manage the body and clear up side's pipe body, this clearance mechanism includes shell fragment, button and clearance board, shell fragment fixed connection is in the one end of clearance board, button fixed connection is at one side surface of shell fragment, and one side of clearance board splices a clearance cotton, and the change can be dismantled to whole clearance mechanism, guarantees the clearance effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a view of the overall structure of the present invention;
fig. 2 is a combined view of the pressing moving structure and the holding plate of the present invention;
fig. 3 is a structural view of the pressing block and the pressure spring of the present invention;
fig. 4 is a combined view of the cleaning mechanism and the second clamping plate of the present invention.
Description of reference numerals:
1. moving the pressing structure; 11. pressing the handle; 12. a rubber block; 13. positioning a groove; 14. a pressing block; 16. an L-shaped chute; 17. a pressure spring; 2. a rubber handle; 3. calibration; 4. a cleaning mechanism; 41. a spring plate; 42. cleaning the plate; 43. a button; 5. a first clamping plate; 51. positioning pins; 52. an L-shaped slider; 6. a second clamping plate; 61. a circular groove; 62. opening the gap; 63. a card slot; 7. a moving groove; 8. a main board.
Detailed Description
In the following, reference will be made to the accompanying drawings in the embodiments of the present invention for clearly and completely describing the technical solutions 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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Please refer to fig. 1 to 4, which are an embodiment of the present invention:
as shown in fig. 1 to 4, a square pipe detection device, including mainboard 8, shifting chute 7 has been seted up at the upper end surface middle part of mainboard 8, and it runs through about the mainboard 8, the equal fixed connection rubber handle in position 2 of both sides around the shifting chute 7 is close to the upper end surface of mainboard 8, the upper end border of shifting chute 7 is provided with scale 3, the position that the upper end surface of mainboard 8 is close to one side is provided with removes pressing structure 1, the lower extreme surface that removes pressing structure 1 is provided with first grip block 5, and it is located lower extreme surface one side of mainboard 8, the fixed connection second grip block 6 of the lower extreme surface opposite side of mainboard 8, clearance mechanism 4 is connected in the surface embedding of 6 one side of second grip block.
The movable pressing structure 1 comprises a pressing handle 11, a rubber block 12, a pressing block 14 and a pressure spring 17, wherein the outer surface of the lower end of the pressing handle 11 is fixedly connected with the pressing block 14, the rubber block 12 is sleeved on the outer surface of the pressing block 14 and is fixedly connected with the pressing block 14, the pressure spring 17 is sleeved outside the pressing block 14, the upper end of the pressure spring 17 is fixedly connected with the outer surface of the lower end of the rubber block 12, the lower end of the pressure spring 17 is fixedly connected to the middle position of the outer surface of the upper end of the first clamping plate 5, and a positioning groove 13 is formed in the middle position of the lower end of the pressing block 14;
a circular groove 61 is formed in one side of the second clamping plate 6, a clamping groove 63 is formed in the annular groove wall of the circular groove 61, a notch 62 is formed in one side of the circular groove 61, and the notch 62 is communicated with the clamping groove 63;
the cleaning mechanism 4 comprises an elastic sheet 41, a button 43 and a cleaning plate 42, the elastic sheet 41 is fixedly connected to one end of the cleaning plate 42, and the button 43 is fixedly connected to the outer surface of one side of the elastic sheet 41;
the outer surface of the upper end of the first clamping plate 5 is symmetrically and fixedly connected with an L-shaped sliding block 52, the middle position of the outer surface of the upper end of the first clamping plate 5 is fixedly connected with a positioning pin 51, the outer surface of the lower end of the main plate 8 is provided with L-shaped sliding grooves 16 close to the front end and the rear end, and the pressing block 14, the positioning groove 13 and the pressure spring 17 are all arranged in the moving groove 7. Thereby the staff who uses the device can press down the length that 11 adjusted first grip block 5 and second grip block 6 through the thumb and need the measuring size of selection, whether body and the cross-sectional dimension of judging square pipe are qualified through the scale 3 that sets up above the mainboard 8, the clamping face of the correspondence of two grip blocks is provided with the clearance cotton simultaneously, can clear up the body, impurity influence testing result above having avoided the body like this, make testing result's accuracy improve greatly.
Further, first grip block 5 all is provided with clearance mechanism 4 with second grip block 6, and its structure is the same, and two clearance mechanisms 4 can clear up the both ends that other side's pipe need detect, have reduced detection error.
Further, the top of locating pin 51 inserts in the constant head tank 13, and locating pin 51 matches each other and swing joint with constant head tank 13 for the handle is pressed by the thumb and just can be accomplished the removal of first grip block 5, and whole process links up, the not hard up condition can not appear.
Further, the number of the clamping grooves 63 is two, and the clamping grooves are symmetrically distributed by taking the center of the circular groove 61 as a midpoint, so that the two clamping grooves 63 can effectively clamp the cleaning plate 42
Furthermore, the number of the elastic pieces 41 is two, the elastic pieces 41 are symmetrically distributed by taking the center of the cleaning plate 42 as a midpoint, the elastic pieces 41 are made of elastic metal and correspond to the positions of the two clamping grooves 63 one by one, the elastic pieces 41 made of metal can ensure that multiple times of deformation still have elasticity, and the elastic pieces 41 are matched with the clamping grooves 63, so that the fixing effect is improved.
Further, one side embedded connection of cleaning plate 42 has the clearance cotton, and the clearance cotton is unanimous with cleaning plate 42 level and the cementing is fixed, and the clearance cotton that sets up in cleaning plate 42 one side is removable to guarantee to have good clearance effect.
The working principle is as follows: the detection device comprises a main board 8, a first clamping board 5, a second clamping board 6 and a movable pressing structure 1, wherein the movable pressing structure 1 comprises a pressing handle 11, a rubber block 12, a pressing block 14 and a pressure spring 17, the outer surface of the lower end of the pressing handle 11 is fixedly connected with the pressing block 14, the pressing force of a thumb is transmitted downwards through the pressing block 14, the rubber block 12 is sleeved on the outer surface of the pressing block 14 and is fixedly connected with the pressing block 14, the pressure spring 17 is sleeved outside the pressing block 14, the upper end of the pressure spring 17 is fixedly connected with the outer surface of the lower end of the rubber block 12, the lower end of the pressure spring 17 is fixedly connected with the middle position of the outer surface of the upper end of the first clamping board 5, the rubber block 12 is matched with the pressure spring 17 to prevent the pressing block 14 from moving upwards, the rubber block 12 is forced to generate friction with the movable groove 7, and the first clamping board 5 is fixed, the middle position of the lower end of the pressing block 14 is provided with a positioning groove 13, the outer surface of the upper end of the first clamping plate 5 is symmetrically and fixedly connected with an L-shaped sliding block 52, the middle position of the outer surface of the upper end of the first clamping plate 5 is fixedly connected with a positioning pin 51, the outer surface of the lower end of the main plate 8 is provided with L-shaped sliding grooves 16 near the front end and the rear end, the positioning pin 51 presses the pressing handle 11 through a thumb to move the pressing block 14 downwards, so that the positioning pin 51 is inserted into the positioning groove 13, the L-shaped sliding block 52 is slidably connected with the L-shaped sliding grooves 16, and the outer surface of the lower end of the main plate 8 can move horizontally again through the cooperation of the positioning pin 51, the positioning groove 13, the L-shaped sliding block 52 and the L-.
The using method comprises the following steps: the movable pressing structure 1 is added on the main board 8, so that the first clamping board 5 can move, the detection size is adjusted through the movement of the first clamping board 5, the movable pressing structure 1 comprises a pressing handle 11, a rubber block 12, a pressing block 14 and a pressure spring 17, through the matched use of the above components, a worker can push the pressing handle 11 by pressing the pressing handle 11 with a thumb when using the device, so as to adjust the position of the first clamping board 5, loosen the pressing handle 11, the rubber block 12 on the pressing block 14 is contacted with the moving groove 7, the friction force between the rubber block 12 and the moving groove 7 is increased through the pressure spring 17, the first clamping board 5 is fixed, then the scale 3 corresponding to the pressing handle 11 is read, and through the round groove 61, the clamping groove 63 and the gap 62 which are arranged on one side of the first clamping board 5 and one side of the second clamping board 6, the circular groove wall of the circular groove 61 is provided with a clamping groove 63, one side of the circular groove 61 is provided with a notch 62, the notch 62 is communicated with the clamping groove 63, the cleaning mechanism 4 is added on one side of the first clamping plate 5 and one side of the second clamping plate 6, the cleaning mechanism 4 on one side of the clamping plates is attached to the square pipe body through the movement of the first clamping plate 5 before the other side pipe is detected, the detection device is moved to enable the cleaning mechanism 4 to move along with the cleaning mechanism 4 so as to clean the side pipe body through the cleaning mechanism 4, the cleaning mechanism 4 comprises an elastic sheet 41, a buckle 43 and a cleaning plate 42, the elastic sheet 41 is fixedly connected to one end of the cleaning plate 42, the buckle 43 is fixedly connected to the outer surface of one side of the elastic sheet 41, one side of the cleaning plate 42 is connected with a cleaning cotton piece, the whole cleaning mechanism 4 is matched with the circular groove 61, the buckle 43 is stirred to dig out fingers through the matching of the notch 62 and the elastic sheet 41, the cleaning mechanism 4 is convenient to replace, and the cleaning effect is guaranteed.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (6)

1. The utility model provides a side's pipe detection device, includes mainboard (8), its characterized in that: a moving groove (7) is formed in the middle of the outer surface of the upper end of the main board (8) and penetrates through the main board (8) from top to bottom, rubber handles (2) are fixedly connected to the positions, close to the front side and the rear side, of the outer surface of the upper end of the main board (8), scales (3) are arranged on the upper end edge of the moving groove (7), a moving pressing structure (1) is arranged at the position, close to one side, of the outer surface of the upper end of the main board (8), a first clamping plate (5) is arranged on the outer surface of the lower end of the moving pressing structure (1) and located on one side of the outer surface of the lower end of the main board (8), a second clamping plate (6) is fixedly connected to the other side of the outer surface of the lower end of the main board (8), and;
the movable pressing structure (1) comprises a pressing handle (11), a rubber block (12), a pressing block (14) and a pressure spring (17), wherein the outer surface of the lower end of the pressing handle (11) is fixedly connected with the pressing block (14), the rubber block (12) is sleeved on the outer surface of the pressing block (14) and is fixedly connected with the pressing block (14), the pressure spring (17) is sleeved outside the pressing block (14), the upper end of the pressure spring (17) is fixedly connected with the outer surface of the lower end of the rubber block (12), the lower end of the pressure spring (17) is fixedly connected to the middle position of the outer surface of the upper end of the first clamping plate (5), and a positioning groove (13) is formed in the middle position of the lower end of the pressing block (14);
a circular groove (61) is formed in one side of the second clamping plate (6), a clamping groove (63) is formed in the annular groove wall of the circular groove (61), a notch (62) is formed in one side of the circular groove (61), and the notch (62) is communicated with the clamping groove (63);
the cleaning mechanism (4) comprises an elastic sheet (41), a button (43) and a cleaning plate (42), the elastic sheet (41) is fixedly connected to one end of the cleaning plate (42), and the button (43) is fixedly connected to the outer surface of one side of the elastic sheet (41);
the clamping device is characterized in that an L-shaped sliding block (52) is symmetrically and fixedly connected to the outer surface of the upper end of the first clamping plate (5), a positioning pin (51) is fixedly connected to the middle of the outer surface of the upper end of the first clamping plate (5), L-shaped sliding grooves (16) are formed in the outer surface of the lower end of the main plate (8) close to the front end and the rear end of the main plate, and the pressing block (14), the positioning groove (13) and the pressure spring (17) are all arranged in the moving groove (7).
2. The square tube detecting device according to claim 1, wherein: the first clamping plate (5) and the second clamping plate (6) are both provided with cleaning mechanisms (4) and have the same structure.
3. The square tube detecting device according to claim 1, wherein: the top end of the positioning pin (51) is inserted into the positioning groove (13), and the positioning pin (51) is matched with and movably connected with the positioning groove (13).
4. The square tube detecting device according to claim 1, wherein: the number of the clamping grooves (63) is two, and the clamping grooves are symmetrically distributed by taking the center of the circular groove (61) as a midpoint.
5. The square tube detection device according to claim 4, wherein: the number of the elastic pieces (41) is two, the elastic pieces are symmetrically distributed by taking the center of the cleaning plate (42) as a midpoint, the elastic pieces (41) are made of elastic metal materials, and the elastic pieces correspond to the positions of the two clamping grooves (63) one by one.
6. The square tube detecting device according to claim 1, wherein: one side embedded connection of clearance board (42) has the clearance cotton, and clearance board (42) and the cotton level of clearance are unanimous and the cementing is fixed.
CN202022076401.9U 2020-09-21 2020-09-21 Square tube detection device Active CN213274006U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022076401.9U CN213274006U (en) 2020-09-21 2020-09-21 Square tube detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022076401.9U CN213274006U (en) 2020-09-21 2020-09-21 Square tube detection device

Publications (1)

Publication Number Publication Date
CN213274006U true CN213274006U (en) 2021-05-25

Family

ID=75943779

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022076401.9U Active CN213274006U (en) 2020-09-21 2020-09-21 Square tube detection device

Country Status (1)

Country Link
CN (1) CN213274006U (en)

Similar Documents

Publication Publication Date Title
WO2001091163A3 (en) Tuning electrodes used in a reactor for electrochemically processing a microelectronic workpiece
CN213274006U (en) Square tube detection device
CN214882496U (en) Garment processing surface fabric is tailor with scale that can fix a position marking off
CN217442466U (en) Aperture measuring block
CN207508734U (en) A kind of floating type autobalance briquette structure for clamp tool
CN209727443U (en) A kind of fixed button switch performance test apparatus
CN210718907U (en) High-precision electric differential head
CN210849440U (en) Machining detection device
CN209806181U (en) Sheet clamp for electroplating and etching of circuit board
CN208902550U (en) A kind of efficient metal material hardness detection device
CN218545516U (en) Length detection device for metering detection
CN208383048U (en) Cold punching and drawing part end face plane degree detection device
CN210014730U (en) Mold diameter measuring device
CN109458905A (en) A kind of cubing for clutch pressure plate lid production
CN216205893U (en) Stamping workpiece height measuring equipment
CN213874104U (en) Stamping workpiece defect detection equipment
CN215984311U (en) Rectangular shape sheet thickness detection frock
CN210165884U (en) QDC mould check out test set
CN208042916U (en) A kind of mould bases plate special-shaped slot easy detection device
CN210689428U (en) Push-pull mechanism for automobile checking fixture
CN218296969U (en) A thimble board for short-term test heating panel
CN215833416U (en) Convenient clamping device of concrete wave velocity measuring instrument
CN215651714U (en) Department of stomatology is with multi-functional measuring forceps
CN220625144U (en) Measuring tool for detecting position from sealing groove to cylindrical surface
CN216348156U (en) Calliper device

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant