CN216334783U - Conveyor is used in hot rolling ribbed steel bar trial production - Google Patents

Conveyor is used in hot rolling ribbed steel bar trial production Download PDF

Info

Publication number
CN216334783U
CN216334783U CN202122000161.9U CN202122000161U CN216334783U CN 216334783 U CN216334783 U CN 216334783U CN 202122000161 U CN202122000161 U CN 202122000161U CN 216334783 U CN216334783 U CN 216334783U
Authority
CN
China
Prior art keywords
conveying table
conveying
water pump
top frame
fixedly connected
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
CN202122000161.9U
Other languages
Chinese (zh)
Inventor
戢俊强
王刚
宋进
王东
李文鹏
李志丹
魏星
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.)
Chengyu Tranvic Science and Technology Co Ltd
Original Assignee
Chengyu Tranvic Science and Technology 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 Chengyu Tranvic Science and Technology Co Ltd filed Critical Chengyu Tranvic Science and Technology Co Ltd
Priority to CN202122000161.9U priority Critical patent/CN216334783U/en
Application granted granted Critical
Publication of CN216334783U publication Critical patent/CN216334783U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

The utility model discloses a conveying device for trial production of hot-rolled ribbed steel bars, which comprises a conveying table, wherein side frames are fixedly connected to the tops of two sides of the conveying table, outer guide rollers are rotatably connected to the ends, far away from the side frames, of the two side frames, a transmission mechanism is arranged at one end of the top of the conveying table, a first top frame is fixedly connected to the middle of the top of the conveying table, and a cooling mechanism is arranged at the top of the first top frame, and the conveying device has the beneficial effects that: the oblique guide roll through crisscross setting is convenient for make the reinforcing bar keep between two parties when removing, be convenient for better carry not unidimensional reinforcing bar through drive mechanism to need not the manpower when the reinforcing bar size changes and adjust equipment, labour saving and time saving, be convenient for better cooling the reinforcing bar through cooling down the mechanism, thereby be convenient for subsequent processing and collection, be convenient for better outside to the reinforcing bar through spraying mechanism and carry out no dead angle coating spraying, improve the production quality of reinforcing bar.

Description

Conveyor is used in hot rolling ribbed steel bar trial production
Technical Field
The utility model relates to the technical field of steel bar production, in particular to a conveying device for trial production of hot-rolled ribbed steel bars.
Background
Deformed steel bar is commonly known as hot rolled ribbed steel bar. The grade of the common hot rolled steel bar is composed of HRB and the minimum value of the yield point of the grade. H. R, B are respectively the first English letters of hot rolling (Hotrolled), Ribbed (Ribbed) and reinforcing steel bar (Bars). Need carry the defeated material through conveyor after the ejection of compact of hot rolling ribbed steel bar pilot scale, but current hot rolling ribbed steel bar pilot scale is with conveyor can't be better carry the not unidimensional reinforcing bar, and can't cool down or paint spraying when defeated material, need operate in addition.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a conveying device for trial production of hot-rolled ribbed steel bars, which solves the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: a conveying device for trial production of hot-rolled ribbed steel bars comprises a conveying table, wherein side frames are fixedly connected to the tops of two sides of the conveying table, the ends, far away from the two side frames, of the two side frames are rotatably connected with outer guide rollers, a transmission mechanism is arranged at one end of the top of the conveying table, a first top frame is fixedly connected to the middle of the top of the conveying table, a cooling mechanism is arranged at the top of the first top frame, an infrared sensor is fixedly mounted at the top of one side, close to the transmission mechanism, of the first top frame, bent plates are fixedly mounted at the top of the conveying table and below the first top frame in an equidistant and staggered mode, inclined guide rollers are rotatably connected to the top of the inner side of each bent plate, a spraying mechanism is arranged at the top of the conveying table and one end, far away from the transmission mechanism, and a control panel is fixedly mounted at one side of the conveying table;
drive mechanism includes two mounting brackets, carry the equal fixedly connected with mounting bracket in top both ends edge of platform, first spout has been seted up at the top of mounting bracket, the inside sliding connection of first spout has the slider, two rotate between the slider and be connected with the guide roll, the first spring of fixedly connected with between the top of slider and the inner wall top of first spout, carry the top of platform and be located the guide roll under rotate and be connected with down the guide roll, carry one side of platform and seted up the second spout, the inside sliding connection of second spout has the mounting panel, the top of mounting panel just is located the inside fixedly connected with second spring of second spout.
Preferably, drive mechanism still includes motor and driving belt, the top fixed mounting of mounting panel has the motor, the output shaft fixedly connected with drive pulley of motor, one side and the last guide roll coaxial coupling of slider have driven pulley, drive pulley and driven pulley all are located same horizontal plane, just drive pulley and driven pulley carry out the transmission through driving belt and connect.
Preferably, cooling mechanism includes the flow distribution plate, the top fixed mounting of first roof-rack has the flow distribution plate, bottom and the equidistance that the flow distribution plate bottom extended to first roof-rack are equipped with first shower nozzle, the top mid-mounting of flow distribution plate has the connecting pipe, the top of first roof-rack is equipped with first water pump, the one end that the flow distribution plate was kept away from to the connecting pipe is connected with the output of first water pump.
Preferably, the input end of the first water pump is communicated with an external cooling water source, and the first nozzle is communicated with the connecting pipe through the flow distribution plate.
Preferably, the spraying mechanism includes the second roof-rack, carry the top of platform and keep away from drive mechanism's one end fixedly connected with second roof-rack, the top one end fixed mounting of second roof-rack has the coating bottle, the top of second roof-rack and the one end fixed mounting who keeps away from the coating bottle have the second water pump, the input of second water pump is connected with the material pumping pipe, the output of second water pump is connected with the conveying pipeline, the bottom fixedly connected with splitter ring of second roof-rack, the inboard equidistance of splitter ring is equipped with the second shower nozzle, carry the top of platform and be located the splitter ring and seted up the collecting vat under, carry the inside fixed mounting of platform to have the collecting pipe, just the top of collecting pipe is linked together with the bottom of collecting vat.
Preferably, the material pumping pipe is of an L-shaped structure, one end, far away from the second water pump, of the material pumping pipe extends to the bottom inside the paint bottle, one end, far away from the second water pump, of the material conveying pipe extends to the bottom of the second top frame and is communicated with the flow dividing ring, and a feeding hole is formed in the top of the paint bottle.
Preferably, the top of the side frame, the top of the lower guide roller, one end of the top of the inclined guide roller and the middle part of the diverter ring are all located in the same horizontal plane.
Preferably, the infrared sensor, the motor, the first water pump and the second water pump are electrically connected with the control panel.
Compared with the prior art, the utility model has the beneficial effects that: the oblique guide roll through crisscross setting is convenient for make the reinforcing bar keep between two parties when removing, be convenient for better carry not unidimensional reinforcing bar through drive mechanism to need not the manpower when the reinforcing bar size changes and adjust equipment, labour saving and time saving, be convenient for better cooling the reinforcing bar through cooling down the mechanism, thereby be convenient for subsequent processing and collection, be convenient for better outside to the reinforcing bar through spraying mechanism and carry out no dead angle coating spraying, improve the production quality of reinforcing bar.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of the transmission mechanism of the present invention;
FIG. 3 is a side view of the flexural plate and oblique guide rolls of this invention;
FIG. 4 is an enlarged view of the utility model at A;
fig. 5 is a schematic structural view of a diverter ring and a second showerhead of the present invention.
In the figure: 1. a conveying table; 2. a side frame; 3. an outer guide roller; 4. a transmission mechanism; 41. a mounting frame; 42. a first chute; 43. a slider; 44. an upper guide roller; 45. a first spring; 46. a lower guide roller; 47. a second chute; 48. mounting a plate; 49. a second spring; 410. a motor; 411. a drive pulley; 412. a driven pulley; 413. a drive belt; 5. a first top frame; 6. a cooling mechanism; 61. a flow distribution plate; 62. a first nozzle; 63. a connecting pipe; 64. a first water pump; 7. an infrared sensor; 8. bending a plate; 9. an oblique guide roller; 10. a spraying mechanism; 101. a second head frame; 102. coating bottles; 103. a second water pump; 104. a material pumping pipe; 105. a delivery pipe; 106. a shunt ring; 107. a second nozzle; 108. collecting tank; 109. a collector pipe; 11. a control panel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: a conveying device for trial production of hot-rolled ribbed steel bars comprises a conveying table 1, wherein side frames 2 are fixedly connected to the tops of two sides of the conveying table 1, outer guide rollers 3 are rotatably connected to the far ends of the two side frames 2, the outer guide rollers 3 are used for facilitating better auxiliary supporting and guiding movement of the steel bars and preventing bending deformation of the steel bars, a transmission mechanism 4 is arranged at one end of the top of the conveying table 1, a first top frame 5 is fixedly connected to the middle of the top of the conveying table 1, a cooling mechanism 6 is arranged at the top of the first top frame 5, an infrared sensor 7 is fixedly mounted at the top of one side, close to the transmission mechanism 4, of the first top frame 5, the position of the steel bars is conveniently and better detected through the infrared sensor 7, bent plates 8 are fixedly mounted at the top of the conveying table 1 and below the first top frame 5 in an equidistant and staggered mode, oblique guide rollers 9 are rotatably connected to the tops of the inner sides of the bent plates 8, the steel bars are kept centered conveniently during moving through the inclined guide rollers 9 which are arranged in a staggered mode, a spraying mechanism 10 is arranged at the top of the conveying table 1 and at one end far away from the transmission mechanism 4, and a control panel 11 is fixedly installed on one side of the conveying table 1;
the transmission mechanism 4 comprises two mounting frames 41, the mounting frames 41 are fixedly connected to the edges of two ends of the top of the conveying table 1, a first chute 42 is formed in the top of the mounting frame 41, a sliding block 43 is connected to the inside of the first chute 42 in a sliding manner, an upper guide roller 44 is connected between the two sliding blocks 43 in a rotating manner, a first spring 45 is fixedly connected between the top of the sliding block 43 and the top of the inner wall of the first chute 42, a lower guide roller 46 is connected to the top of the conveying table 1 and is positioned right below the upper guide roller 44 in a rotating manner, a second chute 47 is formed in one side of the conveying table 1, a mounting plate 48 is connected to the inside of the second chute 47 in a sliding manner, and a second spring 49 is fixedly connected to the top of the mounting plate 48 and positioned inside of the second chute 47; drive mechanism 4 still includes motor 410 and driving belt 413, the top fixed mounting of mounting panel 48 has motor 410, motor 410's output shaft fixedly connected with drive pulley 411, one side of slider 43 and last guide roll 44 coaxial coupling have driven pulley 412, drive pulley 411 and driven pulley 412 all are located same horizontal plane, and drive pulley 411 and driven pulley 412 carry out the transmission through driving belt 413 and connect, be convenient for better carry not unidimensional reinforcing bar through drive mechanism 4, thereby need not the manpower when reinforcing bar size changes and adjust equipment, time saving and labor saving.
It will be appreciated that when the size of the steel bar inserted into the bottom of the 44 is increased, 44 rises, 43 rises and compresses 45, and the pushing force of 43 makes 44 fully contact with the steel bar, keeps enough friction, 43 rises and 412 rises, and is pulled by 413 to rise 411, and then 410 and 48 rise, and 49 pushes 48 down, so that 413 keeps enough tension to drive.
Further, cooling mechanism 6 includes flow distribution plate 61, the top fixed mounting of first roof-rack 5 has flow distribution plate 61, flow distribution plate 61 bottom extends to the bottom and the equidistance of first roof-rack 5 and is equipped with first shower nozzle 62, the top mid-mounting of flow distribution plate 61 has connecting pipe 63, the top of first roof-rack 5 is equipped with first water pump 64, the one end that flow distribution plate 61 was kept away from to connecting pipe 63 is connected with first water pump 64's output, first water pump 64's input is linked together with outside cooling water source, first shower nozzle 62 is linked together through flow distribution plate 61 and connecting pipe 63, be convenient for better cooling the reinforcing bar through cooling mechanism 6, thereby be convenient for subsequent processing and collection.
Further, the spraying mechanism 10 includes a second top frame 101, one end of the top of the conveying table 1 far away from the transmission mechanism 4 is fixedly connected with the second top frame 101, one end of the top of the second top frame 101 is fixedly provided with a paint bottle 102, one end of the top of the second top frame 101 far away from the paint bottle 102 is fixedly provided with a second water pump 103, an input end of the second water pump 103 is connected with a pumping pipe 104, an output end of the second water pump 103 is connected with a conveying pipe 105, a bottom of the second top frame 101 is fixedly connected with a diverting ring 106, the inner side of the diverting ring 106 is equidistantly provided with a second spray head 107, the top of the conveying table 1 is positioned under the diverting ring 106 and is provided with a collecting tank 108, a collecting pipe 109 is fixedly installed inside the conveying table 1, the top of the collecting pipe 109 is communicated with the bottom of the collecting tank 108, the pumping pipe 104 is of an L-shaped structure, and one end of the pumping pipe 104 far away from the second water pump 103 extends to the inner bottom of the paint bottle 102, one end of the delivery pipe 105, which is far away from the second water pump 103, extends to the bottom of the second top frame 101 and is communicated with the diverter ring 106, a feeding hole is formed in the top of the paint bottle 102, so that dead-angle-free paint spraying can be better performed on the outer side of the steel bar through the spraying mechanism 10, and the production quality of the steel bar is improved.
Furthermore, the top of the side frame 2, the top of the lower guide roller 46, one end of the top of the inclined guide roller 9 and the middle of the diverter ring 106 are all located in the same horizontal plane, so that the steel bars can be guided and processed better.
Further, the infrared sensor 7, the motor 410, the first water pump 64 and the second water pump 103 are electrically connected with the control panel 11, so that the equipment can be controlled better.
Wherein the model of the infrared sensor 7 is E3Z-LS 61-TB.
Specifically, when the device is used, the device is firstly moved to a designated position and powered on, then the motor 410 is started through the control panel 11, the motor 410 drives the driving pulley 411 to rotate so as to drive the driven pulley 412 to rotate clockwise, the driven pulley 412 drives the upper guide roller 44 to rotate so as to drive the lower guide roller 46 to rotate reversely, at this time, the steel bar is plugged between the upper guide roller 44 and the lower guide roller 46, the steel bar moves towards the direction of the first top frame 5 along with the rotation of the upper guide roller 44, when the steel bar moves to the bottom of the first top frame 5, the top of the inclined guide roller 9 is kept in the middle in the moving process through the inclined guide roller 9, meanwhile, the infrared sensor 7 detects the steel bar, the first water pump 64 is started through the control panel 11, an external water source is shunted through the shunt plate 61 after passing through the first water pump 64 and the connecting pipe 63 in sequence and then is sprayed out from the first spray nozzle 62, and the temperature of the steel bar is reduced, when the reinforcing bar after the cooling removed to the inboard of flow distribution ring 106, at this moment open second water pump 103 through control panel 11, second water pump 103 takes out the coating in paint bottle 102 through pumping pipe 104, and carry to flow distribution ring 106 in through conveying pipeline 105, shunt the back from a plurality of second shower nozzles 107 blowout through flow distribution ring 106, carry out multi-angle spraying to the reinforcing bar, unnecessary coating drops to in the collecting vat 108 simultaneously, and converge and flow out through collecting pipe 109, can collect reuse, then repeat above-mentioned operation again, can accomplish continuous reinforcing bar and carry the work.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. The conveying device for the trial production of the hot-rolled ribbed steel bars comprises a conveying table (1) and is characterized in that side frames (2) are fixedly connected to the tops of the two sides of the conveying table (1), two outer guide rollers (3) are rotatably connected to the ends, far away from the side frames (2), of the conveying table (1), a transmission mechanism (4) is arranged at one end of the top of the conveying table (1), a first top frame (5) is fixedly connected to the middle of the top of the conveying table (1), a cooling mechanism (6) is arranged at the top of the first top frame (5), an infrared sensor (7) is fixedly mounted at the top of one side, close to the transmission mechanism (4), of the first top frame (5), bent plates (8) are fixedly mounted at the top of the conveying table (1) and below the first top frame (5) in an equidistant and staggered mode, and inclined guide rollers (9) are rotatably connected to the tops of the inner sides of the bent plates (8), a spraying mechanism (10) is arranged at the top of the conveying table (1) and at one end far away from the transmission mechanism (4), and a control panel (11) is fixedly installed on one side of the conveying table (1);
the transmission mechanism (4) comprises two mounting frames (41), the edges of two ends of the top of the conveying table (1) are fixedly connected with the mounting frames (41), a first sliding chute (42) is formed in the top of the mounting frame (41), a sliding block (43) is connected inside the first sliding chute (42) in a sliding manner, an upper guide roller (44) is rotatably connected between the two sliding blocks (43), a first spring (45) is fixedly connected between the top of the sliding block (43) and the top of the inner wall of the first sliding chute (42), a lower guide roller (46) is rotatably connected with the top of the conveying platform (1) and is positioned right below the upper guide roller (44), a second sliding chute (47) is arranged at one side of the conveying platform (1), a mounting plate (48) is connected inside the second sliding chute (47) in a sliding manner, and a second spring (49) is fixedly connected to the top of the mounting plate (48) and positioned in the second sliding groove (47).
2. The conveying device for the trial production of the hot-rolled ribbed steel bars as claimed in claim 1, wherein the transmission mechanism (4) further comprises a motor (410) and a transmission belt (413), the motor (410) is fixedly mounted at the top of the mounting plate (48), a driving pulley (411) is fixedly connected to an output shaft of the motor (410), a driven pulley (412) is coaxially connected to one side of the slider (43) and the upper guide roller (44), the driving pulley (411) and the driven pulley (412) are both located in the same horizontal plane, and the driving pulley (411) and the driven pulley (412) are in transmission connection through the transmission belt (413).
3. The conveying device for the trial production of the hot-rolled ribbed steel bars as claimed in claim 2, wherein the cooling mechanism (6) comprises a splitter plate (61), the splitter plate (61) is fixedly mounted at the top of the first top frame (5), first spray nozzles (62) are arranged at the bottoms of the splitter plates (61) and extend to the bottom of the first top frame (5) at equal intervals, a connecting pipe (63) is mounted in the middle of the top of the splitter plate (61), a first water pump (64) is arranged at the top of the first top frame (5), and one end, away from the splitter plate (61), of the connecting pipe (63) is connected with an output end of the first water pump (64).
4. The conveying device for the trial production of the hot-rolled ribbed steel bars as claimed in claim 3, wherein the input end of the first water pump (64) is communicated with an external cooling water source, and the first spray head (62) is communicated with the connecting pipe (63) through the flow distribution plate (61).
5. The conveying device for trial production of the hot-rolled ribbed steel bar according to claim 3, wherein the spraying mechanism (10) comprises a second top frame (101), one end of the top of the conveying table (1) far away from the transmission mechanism (4) is fixedly connected with the second top frame (101), one end of the top of the second top frame (101) is fixedly provided with a paint bottle (102), one end of the top of the second top frame (101) far away from the paint bottle (102) is fixedly provided with a second water pump (103), an input end of the second water pump (103) is connected with a material pumping pipe (104), an output end of the second water pump (103) is connected with a material conveying pipe (105), the bottom of the second top frame (101) is fixedly connected with a flow distribution ring (106), second spray nozzles (107) are equidistantly arranged on the inner side of the flow distribution ring (106), a collecting groove (108) is formed in the top of the conveying table (1) and is positioned right below the flow distribution ring (106), a collecting pipe (109) is fixedly installed inside the conveying table (1), and the top of the collecting pipe (109) is communicated with the bottom of the collecting tank (108).
6. The conveying device for the trial production of the hot-rolled ribbed steel bars as claimed in claim 5, wherein the pumping pipe (104) is of an L-shaped structure, one end of the pumping pipe (104) far away from the second water pump (103) extends to the bottom of the interior of the paint bottle (102), one end of the conveying pipe (105) far away from the second water pump (103) extends to the bottom of the second top frame (101) and is communicated with the flow dividing ring (106), and a feeding hole is formed in the top of the paint bottle (102).
7. The conveyor apparatus for trial production of hot rolled ribbed steel bars as claimed in claim 5, wherein the top of the side frame (2), the top of the lower guide roll (46), one end of the top of the inclined guide roll (9), and the middle of the diverter ring (106) are all located in the same horizontal plane.
8. The conveying device for trial production of the hot-rolled ribbed steel bar according to claim 5, wherein the infrared sensor (7), the motor (410), the first water pump (64) and the second water pump (103) are electrically connected with the control panel (11).
CN202122000161.9U 2021-08-24 2021-08-24 Conveyor is used in hot rolling ribbed steel bar trial production Active CN216334783U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122000161.9U CN216334783U (en) 2021-08-24 2021-08-24 Conveyor is used in hot rolling ribbed steel bar trial production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122000161.9U CN216334783U (en) 2021-08-24 2021-08-24 Conveyor is used in hot rolling ribbed steel bar trial production

Publications (1)

Publication Number Publication Date
CN216334783U true CN216334783U (en) 2022-04-19

Family

ID=81167716

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202122000161.9U Active CN216334783U (en) 2021-08-24 2021-08-24 Conveyor is used in hot rolling ribbed steel bar trial production

Country Status (1)

Country Link
CN (1) CN216334783U (en)

Similar Documents

Publication Publication Date Title
CN111906864B (en) Can locally soften woodwork bending member forming device
CN216334783U (en) Conveyor is used in hot rolling ribbed steel bar trial production
CN109366329B (en) Steel wire surface rust removal equipment
CN113651057A (en) Conveying device for trial production of hot-rolled ribbed steel bars and application method thereof
CN112975706A (en) Rust removal and polishing device for coil hot-rolled ribbed steel bar production and using method thereof
CN209906835U (en) Quenching product falling and receiving device after quenching of quenching machine
CN112296103A (en) Production process of hot rolled steel plate
CN210856231U (en) A high-efficient guenching unit for aluminum alloy extruded section
CN201316745Y (en) High pressure water descaling unit
CN217940662U (en) Single-side spraying device for color-coated sheet
CN214976662U (en) Cooling equipment for bar rolling mill
CN213644995U (en) Dry type material brushing machine
CN216883276U (en) Continuous polishing equipment for ceiling aluminum pinch plate
CN210232613U (en) Sheet metal surface treatment equipment
CN108177091A (en) A kind of metal oxide layer eliminating equipment
CN220259084U (en) Aluminum and aluminum alloy strip composite stainless steel device
CN217165815U (en) Steel billet rolling equipment for steel smelting
CN201704409U (en) Antiseptic treatment equipment for seamless steel tube
CN212293688U (en) Cooling device for processing PET plastic steel belt
CN220507600U (en) PC steel bar blow-drying device
CN218175053U (en) Steel pipe quenching device
CN213105498U (en) Double-coiling middle-dividing slitting machine
CN219443410U (en) Aluminum processing cooling device
CN215542089U (en) Conveying device with auxiliary linear mark for steel processing
CN219988234U (en) Cooling device for producing plastic packaging film

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
PP01 Preservation of patent right

Effective date of registration: 20230302

Granted publication date: 20220419

PP01 Preservation of patent right