CN217950854U - Main cylinder of quick forging main machine - Google Patents
Main cylinder of quick forging main machine Download PDFInfo
- Publication number
- CN217950854U CN217950854U CN202221069425.4U CN202221069425U CN217950854U CN 217950854 U CN217950854 U CN 217950854U CN 202221069425 U CN202221069425 U CN 202221069425U CN 217950854 U CN217950854 U CN 217950854U
- Authority
- CN
- China
- Prior art keywords
- plunger
- ball seat
- rod
- cross beam
- lower ball
- 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
Links
Images
Landscapes
- Pivots And Pivotal Connections (AREA)
Abstract
The utility model provides a master cylinder of quick forging host computer, including cylinder body, plunger, intermediate lever, plunger gland, guide pin bushing, V type seal and pressure cover, wherein, the plunger sets up in the inner chamber of cylinder body, the end of plunger is provided with Rong Ganqiang, the one end of intermediate lever is arranged in hold the pole intracavity, the other end of intermediate lever with the movable cross beam of host computer is connected, the plunger gland encircles the end setting of plunger, the one end of plunger gland with the tip contact of cylinder body, the guide pin bushing sets up the plunger with between the inner wall of cylinder body, the V type seal with the pressure cover all sets up the guide pin bushing with between the plunger gland, the V type seal with the guide pin bushing contact, the pressure cover with the plunger gland contact on the axis direction of plunger, the sealed length of V type is greater than the length of pressure cover. The main cylinder ensures the sealing effect and prolongs the sealing service cycle.
Description
Technical Field
The utility model relates to a hydraulic pressure technical field, in particular to master cylinder of fast forging host computer.
Background
45MN fast forging host machine three key oil cylinders (a main cylinder, a side cylinder and a return cylinder), wherein the type of the oil cylinder is a single-action plunger type cylinder, the installation mode is vertical downward, the maximum working stroke is 2300mm, eccentric forging exists when a large blank is roughly forged and pressed down, the oil cylinder has poor guidance, the end part of the plunger, a copper sleeve and a cylinder body are abraded, the sealing service cycle is influenced, and the sealing is replaced for 1 time in half a year; secondly, the plunger piston material of the domestic oil cylinder design is 45#, the copper bush material is ZCuSn5Pb5Zn5, the surface hardness of the plunger piston and the copper bush is not good, the plunger piston and the copper bush are easy to wear, the daily replacement of the copper bush is not easy to execute, and the main cylinder and the side cylinder are replaced by utilizing annual overhaul for 12 days generally. The main cylinder seal is easy to wear, the replacement period is half a year, and 8 hours are consumed for replacing the primary seal.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a master cylinder of host computer is forged soon ensures sealed effect, has increased sealed life cycle.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model provides a master cylinder of fast forging host computer, includes cylinder body, plunger, intermediate lever, plunger gland, guide pin bushing, V type seal and pressure cover, wherein, the plunger sets up in the inner chamber of cylinder body, the end of plunger is provided with Rong Ganqiang, the one end of intermediate lever is arranged in hold the pole intracavity, the other end of intermediate lever with the movable cross beam of host computer is connected, the plunger gland encircles the end setting of plunger, the one end of plunger gland with the tip contact of cylinder body, the guide pin bushing sets up the plunger with between the inner wall of cylinder body, the V type seal with the pressure cover all sets up the guide pin bushing with between the plunger gland, the V type seal with the guide pin bushing contact, the pressure cover with the plunger gland contact in the axis direction of plunger, the sealed length of V type is greater than the length of pressure cover.
Furthermore, the main cylinder of the quick forging main machine further comprises an upper ball seat and a lower ball seat, wherein one end of the middle rod is connected with one end of the upper ball seat, and the other end of the middle rod is connected with one end of the lower ball seat; the contact rates between the middle rod and the upper ball seat and between the middle rod and the lower ball seat are not lower than 60%; one end and the other end of the middle rod are both concave spherical surfaces, one end of the upper ball seat is a convex spherical surface, the other end of the upper ball seat is a plane, and the other end of the upper ball seat is connected with the cavity bottom of the rod accommodating cavity; one end of the lower ball seat is a convex spherical surface, the other end of the lower ball seat is a plane, and the other end of the lower ball seat is connected with the movable cross beam; grease lubrication is adopted between the middle rod and the upper ball seat and between the middle rod and the lower ball seat.
Further, in the master cylinder of foretell fast forging host computer, go up the center department of ball seat the center department of intermediate lever the center department of ball seat all is provided with the through-hole down, the center department of holding the chamber end in pole chamber is provided with the blind hole, the movable cross beam is last to be provided with the blind hole, the one end of locking double-screw bolt is arranged in the blind hole at the chamber end, the locking double-screw bolt passes in proper order go up the through-hole of ball seat the through-hole of intermediate lever with the through-hole of ball seat down, the other end of locking double-screw bolt is arranged in the blind hole on the movable cross beam, the other end of locking double-screw bolt is connected with slotted nut and split pin, slotted nut with the split pin can avoid the locking double-screw bolt is not hard up.
Further, in the master cylinder of the quick forging host machine, the quick forging host machine further comprises a flange, the flange is arranged around the middle rod, a gap between the middle rod and the flange is 0.4-0.5 mm, the flange is connected with the movable cross beam, and the flange is connected with the movable cross beam through a screw or a pin.
Further, in the main cylinder of the quick forging main machine, a stepped hole is formed in the periphery of the through hole of the lower ball seat and at the other end of the lower ball seat, a cushion block is arranged in the stepped hole, and the cushion block is arranged around the locking stud; the clearance between the cushion block and the slotted nut is 0.3-0.5 mm.
Furthermore, in the master cylinder of the rapid forging main machine, the rapid forging main machine further comprises an adjusting block, the adjusting block is arranged in a blind hole in the movable cross beam, and a gap between the adjusting block and the other end of the locking stud is 0.5mm.
Further, the master cylinder of the quick forging main machine further comprises a cylindrical pin and a screw, the cylindrical pin connects the cavity bottom of the rod containing cavity, the upper ball seat and the intermediate rod, and the screw connects the cavity bottom of the rod containing cavity, the upper ball seat and the intermediate rod.
Further, in the above main cylinder of the quick forging main machine, the main cylinder further comprises a joint and a mouth-shaped sealing ring, and the joint and the mouth-shaped sealing ring are both arranged between the flange and the intermediate rod.
Further, the main cylinder of the quick forging main machine further comprises a fixing stud and a nut, and the fixing stud and the nut connect the cylinder body with an upper cross beam of the main machine.
Furthermore, in the main cylinder of the rapid forging main machine, the plunger is made of 30CrNiMo8V, and the guide sleeve is made of GZ-CuAl10Ni.
The analysis can know, the utility model discloses a master cylinder of fast forging host computer, the plunger material is changed into 30CrNiMo8V by current 35 or 45#, and the plunger surface is the nitriding treatment, except nitriding treatment excircle before the nitriding treatment, all the other surface coating protection paste object protect. And (3) performing gas nitriding treatment on the surfaces of the excircles phi 1080 and phi 560, wherein the surface hardness HV3 is as follows: 650-700 mm, and the effective depth of the nitride layer is 0.50-0.70 mm. The main cylinder V-seal (1080/1130 × 100, number 1 set) has a length greater than that of the pressing sleeve in the axial direction of the plunger. Specifically, in a practical embodiment, the thickness of the V-shaped seal (namely the length in the axial direction of the plunger) is increased to 126mm from the existing 100mm adjustment, the thickness of the sealing pressing sleeve is correspondingly reduced by 26mm, and the number of layers of the V-shaped seal is changed from 5 layers to 7 layers, so that the sealing effect is ensured; through effect certification, the sealing service life is up to 1 year from 6 months.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. Wherein:
fig. 1 is a schematic sectional view of an embodiment of the present invention.
Description of the reference numerals: 1. a cylinder body; 2. a plunger; 3. a ball seat is arranged; 4. an intermediate lever; 5. locking the stud; 6. a guide sleeve; 7. v-shaped sealing; 8. a plunger gland; 9. a joint; 10. a mouth-shaped seal ring; 11. a ball seat is arranged; 12. a cushion block; 13. an adjusting block; 14. a slotted nut; 15. a cotter pin; 16. a cylindrical pin; 17. a flange; 18. a screw; 19. fixing the stud; 20. a nut; 21. a screw; 22. a pin; 23. pressing the sleeve; 24. a movable cross beam.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. Each example is provided by way of explanation of the invention and not limitation of the invention. In fact, it will be apparent to those skilled in the art that modifications and variations can be made in the present invention without departing from the scope or spirit thereof. For instance, features illustrated or described as part of one embodiment, can be used with another embodiment to yield a still further embodiment. It is therefore intended that the present invention encompass such modifications and variations as fall within the scope of the appended claims and equivalents thereof.
In the description of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention and do not require that the present invention must be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. The terms "connected", "connected" and "disposed" used in the present invention should be understood in a broad sense, and may be, for example, either fixedly connected or detachably connected; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.
One or more examples of the invention are illustrated in the accompanying drawings. The detailed description uses numerical and letter designations to refer to features in the drawings. Like or similar designations in the drawings and description have been used to refer to like or similar parts of the invention. As used herein, the terms "first," "second," and "third," etc. may be used interchangeably to distinguish one component from another, and are not intended to denote position or importance of the individual components.
As shown in fig. 1, according to the embodiment of the utility model, the utility model provides a master cylinder of fast forging host computer, including cylinder body 1, plunger 2, intermediate lever 4, plunger gland 8, guide pin bushing 6, V type seal 7 and pressure cover 23, wherein, plunger 2 sets up in the inner chamber of cylinder body 1, plunger 2's end is provided with Rong Ganqiang, the pole intracavity is arranged in holding to the one end of intermediate lever 4, the other end of intermediate lever 4 is connected with the movable cross beam 24 of host computer, plunger gland 8 encircles the terminal setting of plunger 2, the one end of plunger gland 8 and the tip contact of cylinder body 1, guide pin bushing 6 sets up between the inner wall of plunger 2 and cylinder body 1, V type seal 7 and pressure cover 23 all set up between guide pin bushing 6 and plunger gland 8, V type seal 7 and guide pin bushing 6 contact, pressure cover 23 and plunger gland 8 contact, in the axial direction of plunger 2, the length of V type seal 7 is greater than the length of pressure cover 23. The length of the V-shaped seal 7 is increased, the length of the pressing sleeve 23 is correspondingly reduced, and the sealing effect is ensured. The main cylinder sealing ring allows the installation of the cut, and the cut of the two circles should be staggered by 90 degrees.
Preferably, the device further comprises an upper ball seat 3 and a lower ball seat 11, wherein one end of the middle rod 4 is connected with one end of the upper ball seat 3, and the other end of the middle rod 4 is connected with one end of the lower ball seat 11; the contact rates between the intermediate rod 4 and the upper ball seat 3 and between the intermediate rod 4 and the lower ball seat 11 are not less than 60%. One end and the other end of the middle rod 4 are both concave spherical surfaces, one end of the upper ball seat 3 is a convex spherical surface, the other end of the upper ball seat 3 is a plane, and the other end of the upper ball seat 3 is connected with the cavity bottom of the rod accommodating cavity; one end of the lower ball seat 11 is a convex spherical surface, the other end of the lower ball seat 11 is a plane, and the other end of the lower ball seat 11 is connected with the movable cross beam 24; grease lubrication is adopted between the middle rod 4 and the upper ball seat 3 and between the middle rod 4 and the lower ball seat 11. The middle rod 4 and the upper ball seat 3, the middle rod 4 and the lower ball seat 11 are required to be matched before being assembled, and the contact rate is not less than 60%.
Preferably, the locking device further comprises a locking stud 5, through holes are formed in the center of the upper ball seat 3, the center of the middle rod 4 and the center of the lower ball seat 11, a blind hole is formed in the center of the cavity bottom of the rod containing cavity, a blind hole is formed in the movable cross beam 24, one end of the locking stud 5 is arranged in the blind hole in the cavity bottom, the locking stud 5 sequentially penetrates through the through hole of the upper ball seat 3, the through hole of the middle rod 4 and the through hole of the lower ball seat 11, the other end of the locking stud 5 is arranged in the blind hole in the movable cross beam 24, the other end of the locking stud 5 is connected with a slotted nut 14 and a split pin 15, and the slotted nut 14 and the split pin 15 can prevent the locking stud 5 from loosening.
Preferably, the device further comprises a flange 17, the flange 17 is arranged around the intermediate rod 4, the gap between the intermediate rod 4 and the flange 17 is 0.4-0.5 mm, the flange 17 is connected with the movable cross beam 24, and the flange 17 is connected with the movable cross beam 24 through a screw 18 or a pin.
Preferably, a stepped hole is formed in the periphery of the through hole of the lower ball seat 11 and at the other end of the lower ball seat 11, a cushion block 12 is arranged in the stepped hole, and the cushion block 12 is arranged around the locking stud 5; the clearance between the cushion block 12 and the slotted nut 14 is 0.3-0.5 mm. The cushion block 12 is used for filling up unevenness on the surface of the flange 17 and effectively adjusting the gap.
Preferably, the locking device further comprises an adjusting block 13, wherein the adjusting block 13 is arranged in a blind hole in the movable cross beam 24, and the gap between the adjusting block 13 and the other end of the locking stud 5 is 0.5mm. The function of the adjusting block 13 is to fill up the unevenness of the surface of the flange 17 and effectively adjust the gap.
Preferably, the rod-receiving cavity further comprises a cylindrical pin 16 and a screw 21, wherein the cylindrical pin 16 connects the cavity bottom of the rod-receiving cavity, the upper ball seat 3 and the middle rod 4, and the screw 21 connects the cavity bottom of the rod-receiving cavity, the upper ball seat 3 and the middle rod 4.
Preferably, a joint 9 and a mouth 10 are also included, the joint 9 and the mouth 10 being each arranged between the flange 17 and the intermediate rod 4. The joint 9 is communicated with the joint of the middle rod 4 and the lower ball seat 11, the joint 9 is communicated with the electric grease trolley, the electric grease trolley is used for daily maintenance to supplement oil to the spherical surfaces of the upper ball seat 3 and the lower ball seat 11 for lubrication, the mouth-shaped sealing ring 10 plays a sealing role, and oil is prevented from overflowing during oil feeding lubrication. As shown in fig. 1, the joint 9 and the lip seal 10 are positioned so that the joint 9 is located at the upper side and the lip seal 10 is located at the lower side.
Preferably, the cylinder body 1 further comprises a fixing stud 19 and a nut 20, and the fixing stud 19 and the nut 20 are used for connecting the cylinder body 1 with an upper cross beam of the main machine.
The plunger 2 is made of 30CrNiMo8V, and the guide sleeve 6 is made of GZ-CuAl10Ni. The material of direction copper sheathing is changed into ZCuAL10Fe4Ni4 by current ZCuSn5Pb5Zn5, improves copper sheathing wearability, and the structure is heavy load ring type copper sheathing, surface hardness: HB160-200; mechanical properties of the material are as follows: the tensile strength is 580-650MPa; elongation (%) 5-10%; hardness HB160-HB200; the molding method is as follows: centrifugal casting; the single-side blank allowance is 5mm-7mm.
From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:
the material quality of the plunger 2 is changed from the existing 35# or 45# into 30CrNiMo8V, the surface of the plunger 2 is subjected to nitriding treatment, and the surfaces of the plunger 2 are coated with a protection paste object for protection except the nitrided excircle before nitriding. Outer circle of the circle
Surface gas nitriding treatment, surface hardness HV3:650-700 mm, and the effective depth of the nitride layer is 0.50-0.70 mm.
The master cylinder V-seal 7 (1080/1130 × 100, 1 set in number) has a length of the V-seal 7 larger than that of the pressing sleeve 23 in the axial direction of the plunger 2. Specifically, in a practical embodiment, the thickness of the V-shaped seal 7 (namely the length in the axial direction of the plunger 2) is increased to 126mm from the conventional 100mm adjustment, the thickness of the sealing pressing sleeve 23 is correspondingly reduced by 26mm, and the number of layers of the V-shaped seal 7 is changed from 5 to 7, so that the sealing effect is ensured; through effect authentication, the sealing service life is up to 1 year from 6 months.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A master cylinder of a rapid forging host machine is characterized by comprising a cylinder body, a plunger, an intermediate rod, a plunger gland, a guide sleeve, a V-shaped seal and a pressing sleeve, wherein,
the plunger is arranged in the inner cavity of the cylinder body, the tail end of the plunger is provided with Rong Ganqiang, one end of the intermediate rod is arranged in the rod containing cavity, the other end of the intermediate rod is connected with the movable cross beam of the main machine,
the plunger pressing cover is arranged around the tail end of the plunger, one end of the plunger pressing cover is contacted with the end part of the cylinder body,
the guide sleeve is arranged between the plunger and the inner wall of the cylinder body,
the V-shaped seal and the pressing sleeve are both arranged between the guide sleeve and the plunger pressing cover,
the V-shaped seal is contacted with the guide sleeve, the pressing sleeve is contacted with the plunger pressing cover,
in the axial direction of the plunger, the length of the V-shaped seal is greater than that of the pressing sleeve;
the plunger is made of 30CrNiMo8V, the surface hardness HV3 of the plunger is 650-700, the surface of the plunger is provided with a nitride layer, and the effective depth of the nitride layer is 0.50-0.70 mm;
the guide sleeve is made of ZCUOL 10Fe4Ni4, the surface hardness is HB160-200, the tensile strength is 580-650MPa, the elongation is 5-10%, and the hardness is HB160-HB200.
2. The master cylinder of the quick forging machine as claimed in claim 1, further comprising an upper ball seat and a lower ball seat, wherein one end of the intermediate rod is connected to one end of the upper ball seat, and the other end of the intermediate rod is connected to one end of the lower ball seat;
the contact rates between the middle rod and the upper ball seat and between the middle rod and the lower ball seat are not lower than 60%;
one end and the other end of the middle rod are both concave spherical surfaces, one end of the upper ball seat is a convex spherical surface, the other end of the upper ball seat is a plane, and the other end of the upper ball seat is connected with the cavity bottom of the rod accommodating cavity;
one end of the lower ball seat is a convex spherical surface, the other end of the lower ball seat is a plane, and the other end of the lower ball seat is connected with the movable cross beam;
grease lubrication is adopted between the middle rod and the upper ball seat and between the middle rod and the lower ball seat.
3. The master cylinder of the quick forging master according to claim 2, further comprising a locking stud,
through holes are arranged at the center of the upper ball seat, the center of the middle rod and the center of the lower ball seat,
a blind hole is arranged at the center of the cavity bottom of the rod containing cavity, a blind hole is arranged on the movable cross beam,
one end of the locking stud is arranged in the blind hole at the bottom of the cavity, the locking stud sequentially passes through the through hole of the upper ball seat, the through hole of the middle rod and the through hole of the lower ball seat, the other end of the locking stud is arranged in the blind hole on the movable cross beam,
the other end of the locking stud is connected with a slotted nut and a split pin, and the slotted nut and the split pin can prevent the locking stud from loosening.
4. The master cylinder of the quick forging master according to claim 1, further comprising a flange disposed around the intermediate lever, a gap between the intermediate lever and the flange being 0.4mm to 0.5mm,
the flange is connected with the movable cross beam,
the flange is connected with the movable cross beam through a screw or a pin.
5. The master cylinder of the quick forging master according to claim 3,
a stepped hole is formed in the periphery of the through hole of the lower ball seat and is positioned at the other end of the lower ball seat, a cushion block is arranged in the stepped hole, and the cushion block is arranged around the locking stud;
the clearance between the cushion block and the slotted nut is 0.3-0.5 mm.
6. The master cylinder of the quick forging master according to claim 3, further comprising an adjustment block,
the adjusting block is arranged in a blind hole in the movable cross beam, and the gap between the adjusting block and the other end of the locking stud is 0.5mm.
7. The master cylinder of the quick forging machine according to claim 2, further comprising a cylindrical pin and a screw, wherein the cylindrical pin connects the cavity bottom of the rod receiving cavity, the upper ball seat and the intermediate rod,
the screw connects the cavity bottom of the rod containing cavity, the upper ball seat and the middle rod.
8. The master cylinder of a quick forging master cylinder according to claim 4, further comprising a joint and a mouth seal, both of which are disposed between the flange and the intermediate lever.
9. The master cylinder of the quick forging master machine according to claim 1, further comprising a fixing stud and a nut, wherein the fixing stud and the nut connect the cylinder body with an upper cross beam of the master machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221069425.4U CN217950854U (en) | 2022-04-29 | 2022-04-29 | Main cylinder of quick forging main machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221069425.4U CN217950854U (en) | 2022-04-29 | 2022-04-29 | Main cylinder of quick forging main machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217950854U true CN217950854U (en) | 2022-12-02 |
Family
ID=84213874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221069425.4U Active CN217950854U (en) | 2022-04-29 | 2022-04-29 | Main cylinder of quick forging main machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217950854U (en) |
-
2022
- 2022-04-29 CN CN202221069425.4U patent/CN217950854U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR20080110675A (en) | Multi-material connecting rod | |
| CN217950854U (en) | Main cylinder of quick forging main machine | |
| CN106270209A (en) | Diel for Automobile Chassis Parts | |
| CN217950853U (en) | Side cylinder of quick forging main machine | |
| CN217355018U (en) | Return cylinder of fast forging host | |
| CN207606118U (en) | A kind of long-axis forging indirect-extrusion mould | |
| US7250070B2 (en) | Fractured powder metal connecting rod and a method of manufacturing the same | |
| CN212106440U (en) | Upsetting oil cylinder of anchor chain flash welding machine | |
| CN209953500U (en) | Screw-down nut manufactured by additive composite | |
| US6065878A (en) | Slide bearing | |
| CN203585055U (en) | Cracking connecting rod | |
| CN208184963U (en) | A kind of novel high-performance piston | |
| CN218522915U (en) | Improved hydraulic nut pressure adjusting device | |
| CN107415314B (en) | Horizontal aluminium extruding machine main plunger weight automatic-balancing system | |
| US20040107794A1 (en) | High performance connecting rod and method for making | |
| CN201324789Y (en) | Numerical-control punch press mold for metal processing | |
| CN219472525U (en) | Half-shaft nut capable of preventing loosening | |
| CN212149985U (en) | High-hardness copper sleeve | |
| CN218347754U (en) | Stud nut assembly with anti-torsion structure | |
| CN215257508U (en) | Assembly of motorcycle disc brake pump | |
| CN109773239A (en) | A kind of process and positioning device solving the inclined boring of high-carbon steel cracking connecting-rod bush hole | |
| CN110142366B (en) | Forging die bin sealing type flash groove for improving forming and filling effects of fork parts | |
| CN211175332U (en) | Piston rod connected with cylinder body | |
| CN206770050U (en) | A kind of Piston Casting | |
| CN208232172U (en) | A kind of improved oiling section guide rail |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |