CN203809604U - High-gravity-field drag chain supporting device - Google Patents
High-gravity-field drag chain supporting device Download PDFInfo
- Publication number
- CN203809604U CN203809604U CN201420246222.7U CN201420246222U CN203809604U CN 203809604 U CN203809604 U CN 203809604U CN 201420246222 U CN201420246222 U CN 201420246222U CN 203809604 U CN203809604 U CN 203809604U
- Authority
- CN
- China
- Prior art keywords
- drag chain
- traversing carriage
- connecting plate
- support
- fixed support
- 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.)
- Expired - Lifetime
Links
- 230000005484 gravity Effects 0.000 claims description 27
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 238000005452 bending Methods 0.000 abstract description 2
- 238000004804 winding Methods 0.000 abstract 2
- 241001131688 Coracias garrulus Species 0.000 description 14
- 230000033001 locomotion Effects 0.000 description 14
- 238000000034 method Methods 0.000 description 10
- 230000006378 damage Effects 0.000 description 8
- 238000009434 installation Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003913 materials processing Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Centrifugal Separators (AREA)
Abstract
The utility model discloses a high-gravity-field drag chain supporting device comprising a dragging connecting plate, a fixed support, a movable support, two sheaves and two traction ropes. The dragging connecting plate is used for being connected with a moving part, the movable support is mounted on the fixed support and is movable and arranged under the dragging connecting plate, the first end of a drag chain and the fixed support are fixedly mounted on a support of the same horizontal plane, the second end of the drag chain is fixed on the dragging connecting plate after winding around the movable support, the two sheaves are mounted on the outer sides of two ends of the movable support respectively, the first ends of the two traction ropes are respectively connected to the dragging connecting plate, and the second ends of the two traction ropes are connected to the outer side of the fixed support after winding around one of the sheaves. By transmission units formed and reversely assembled by the sheaves and the traction ropes, the movable support and the bending portion of the drag chain can synchronously move, and the movable support can be guaranteed to be always driven to act in corresponding control precision by the dragging connecting plate during reciprocating.
Description
Technical field
The utility model relates to a kind of drag chain support device, relates in particular to a kind of super gravity field drag chain support device that drag chain total travel is propped up to overfill protection.
Background technique
Drag chain is made up of numerous unit links, between link unit, rotates freely, and whole outer likeness in form tank chain, is suitable for use in reciprocating occasion, can play traction and protective action to built-in cable, oil pipe, tracheae, water pipe etc.
Such as, geotechnical centrifuge tool hand is the necessaries that centrifuge completes test operation in running, and drag chain is the efficient mechanism of the protection of geotechnical centrifuge tool hand pipeline and traction.Along with the development of Geotechnical Engineering, for compared with the actual ground work progress of real simulation, geotechnical centrifuge tool hand structure becomes increasingly complex, and related pipeline is more and more, and its stroke is also increasing.In order to improve the effective travel of mechanism hand in the limited hanging basket of geotechnical centrifuge space, drag chain can only be selected small and exquisite, compact plastics drag chain, and adopts horizontal mounting type.
Under super gravity field, level install drag chain deadweight and drag chain gut line produce centrifugal action under and make overhanging portion sagging.Along with the growth of overhanging portion, in the time that the centrifugal force of overhanging portion generation exceedes the bearing capacity of drag chain, will cause drag chain to destroy.Facts have proved, the unsettled length that drag chain carries under super gravity field is very little.The destruction of drag chain can cause that drag chain inner cable damages, thereby makes the mechanism hand of working under super gravity field uncontrollable, and then may cause the damage of equipment.Therefore,, under super gravity field, drag chain is supported to reduce its unsettled length extremely important.
For solving drag chain unsettled destruction in large running process under super gravity field, mainly contain at present two kinds of solutions:
1, adopt vertical mounting type to replace horizontal mounting type, the centrifugal force that the deadweight of drag chain and drag chain gut line produce is like this carried by mounting plane.The defect of this mode is: can avoid long running that unsettled destruction occurs though drag chain is vertically installed, but this mounting type takes up room greatly, this will make mechanism hand install in hanging basket space boundary situation, the stroke of mechanism hand shortens greatly, thereby reduce Robot actions space, installed so vertical mounting type is unsuitable for the drag chain of the mechanism hand of geotechnical centrifuge.
2, drag chain supporting structure is set, the centrifugal force that drag chain overhanging portion causes is carried by supporting structure.Current known drag chain supporting structure has two kinds, i.e. roller type drag chain supporting structure and ancillary supporting device for drag chain.
Wherein, roller type drag chain supporting structure supports by the fixing pair of rollers drag chain in position.In order not interfere the movement of drag chain, roller type drag chain supporting structure can only be arranged on the inaccessiable position of drag chain crooked position, this will make drag chain in whole stroke range, at least there will be four/one stroke length unsettled and cannot add support, when this drag chain for long stroke is worked under super gravity field, the centrifugal force that long unsettled drag chain produces has like this exceeded the utmost carrying ability of drag chain.
Ancillary supporting device for drag chain is utility model patent, the patent No. is " ZL201010541314.4 ", patent name is " ancillary supporting device for drag chain ", it comprises a pair of support single that pairing is used, this support single comprises that vertical setting and top are provided with the supporting base of horizontal mounting hole, and be arranged on the back shaft in described horizontal mounting hole by resetting means, wherein this back shaft comprises that original state partly leans out the supporting portion of described mounting hole, correspondingly, the supporting portion of a pair of support single is relative, supporting portion is provided with the inclined-plane of the inside receipts that extend to outside end face towards the position of drag chain bending simultaneously, and under use state, described horizontal mounting hole can hold described supporting portion completely.The major defect of this device is: cross over supporting portion and realize drag chain total travel and support though this device can be realized the drag chain crooked position in process that advancing at normal gravity field, when drag chain retreats, crooked position is difficult to cross over supporting portion; In addition, the axial setback force in supporting portion derives from the axial thrust load that drag chain produces behind inclined-plane, supporting portion the radial compression applied of supporting portion, in the time that this device is used for super gravity field, drag chain crooked position divides the centrifugal action of generation in the time of supporting portion, can cause the stressed retraction in supporting portion, thereby make supporting portion misoperation and lost efficacy.
In sum, there is no at present drag chain that rational scheme solution level the installs problem of unsettled destruction in large running process under super gravity field, especially there is no mechanism hand drag chain used that rational scheme the solves geotechnical centrifuge problem of unsettled destruction in large running process under super gravity field.
Model utility content
The purpose of this utility model is just to provide in order to address the above problem a kind of super gravity field drag chain support device that drag chain total travel is propped up to overfill protection.
The utility model is achieved through the following technical solutions above-mentioned purpose:
A kind of super gravity field drag chain support device, comprise and drag connecting plate, fixed support, traversing carriage, pulley and tow rope, the described connecting plate that drags is for being connected with moving member, the actual direction that moves back and forth that drags connecting plate described in definition is moving direction, the first end of described traversing carriage in described moving direction is near described support bracket fastened first end, second end of described traversing carriage in described moving direction is near described support bracket fastened the second end, described traversing carriage is installed on described fixed support and can moves in described moving direction, described in being positioned at, described traversing carriage drags the below of connecting plate, the first end of described drag chain and described fixed support are all fixedly installed on the support of same level, the first end of described drag chain is near described support bracket fastened the second end, the second end of described drag chain is walked around described in being fixed on after the first end of described traversing carriage and is dragged on connecting plate, two described pulleys are installed on respectively the outside of first end and second end of described traversing carriage, described in being connected to, the first end of two described tow ropes drags on connecting plate, wherein the second end of a described tow rope is walked around the outside that is connected in described support bracket fastened the second end after the described pulley of a first end that is installed on described traversing carriage, described in another root, the second end of tow rope is walked around the outside that is connected in described support bracket fastened first end after the described pulley of second end that is installed on described traversing carriage.
In said structure, drag connecting plate for connecting drag chain and moving member, this moving member is and need to keeps the closely parts of relation with drag chain, as the mechanism hand of centrifuge, its power supply need to provide by cable, and cable is placed in drag chain and is connected with power supply unit; Fixed support is that traversing carriage provides support and moving track, makes traversing carriage can move back and forth to meet that drag chain follows that above-mentioned moving member moves closely and not unsettled or few unsettled demand; Traversing carriage is used to drag chain to provide support platform, and by drag connecting plate drive do corresponding mobile, with guarantee drag chain in moving process all the time in supported state and can be not unsettled; Pulley and tow rope are transmission devices, a pulley and a tow rope form a set of gear unit, two cover gear units lay respectively at the both sides of traversing carriage and reversing drive each other, can ensure that traversing carriage can be dragged all the time connecting plate band action corresponding sports in to-and-fro motion process, make traversing carriage and the moving direction that drags connecting plate keep Complete Synchronization; Meanwhile, because tow rope is walked around pulley transmission, and pulley is installed on traversing carriage, and pulley is used as movable pulley, has shortened the movement travel of traversing carriage in realizing laborsaving transmission.The angle variation of walking around after pulley due to tow rope is slightly less than 360 °, so the range ability of traversing carriage is slightly less than the half of the move distance that drags connecting plate.
For the ease of installing, described in being connected to, the first end of two described tow ropes drags the position that is positioned at described drag chain both sides on connecting plate.
As preferably, described fixed support comprises two fixed support unit that are arranged in parallel, and described drag chain is placed between two described fixed support unit; Above two described fixed support unit, guide rail is installed, described traversing carriage is installed on the slide block of guide rail.
Move on traversing carriage for the ease of supporting drag chain and being convenient to drag chain, it is axially the crossbeam of described moving direction that described traversing carriage is provided with two, article two, between described crossbeam, be provided with multiplely for supporting the roller of described drag chain, the axial direction of described roller is vertical with described moving direction.
In order to realize the accurate guiding to traversing carriage, be provided with below described crossbeam multiple for making described crossbeam be limited in the slide block on described guide rail.
Spacing better for drag chain is realized in moving process, the two ends external diameter of described roller is greater than stage casing external diameter.
The beneficial effects of the utility model are:
Super gravity field drag chain support device described in the utility model is made up of pulley and tow rope two covers and the gear unit of anti-dress has been realized traversing carriage and drag chain crooked position synchronizing moving, can ensure that traversing carriage can be dragged all the time connecting plate band action corresponding sports in to-and-fro motion process, whenever all can not cause the displacement of traversing carriage mistake because of external force such as the frictional force of centrifugal force or drag chain; The length of traversing carriage only needs the nearly half of drag chain stroke can realize overfill protection of drag chain total travel, the processing cost of having saved traversing carriage; Gear unit is reduced to the movement velocity of traversing carriage the nearly half that drags connecting plate, and pulling force has increased nearly one times, is more convenient to realize the accurate motion of traversing carriage.Super gravity field drag chain support device described in the utility model efficiently solves drag chain that level the installs problem of unsettled destruction in large running process under super gravity field, is particularly useful for the support of the mechanism hand drag chain used of geotechnical centrifuge.
Brief description of the drawings
Fig. 1 is the stereogram of super gravity field drag chain support device described in the utility model;
Fig. 2 is the stereogram of fixed support described in the utility model unit;
Fig. 3 is the stereogram of traversing carriage described in the utility model;
Fig. 4 is that traversing carriage described in the utility model is installed the stereogram after roller;
Fig. 5 is that traversing carriage described in the utility model is installed the plan view after roller;
Fig. 6 is for the stereogram of strut of roller is installed in traversing carriage described in the utility model;
Fig. 7 is the stereogram of roller described in the utility model;
Fig. 8 is the stereogram of pulley described in the utility model;
Fig. 9 is the stereogram that drags connecting plate described in the utility model, there is shown the lower surface configuration that drags connecting plate corresponding in Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, super gravity field drag chain support device described in the utility model comprises and drags connecting plate 6, fixed support 1, traversing carriage 2, pulley 3 and tow rope 4, drag connecting plate 6 for the moving member (connecting object in drag chain when application, as mechanism hand of centrifuge etc., not shown) connect, the actual direction that moves back and forth that definition drags connecting plate 6 is moving direction, the first end of traversing carriage 2 in moving direction is near the first end of fixed support 1, second end of traversing carriage 2 in moving direction is near the second end of fixed support 1, traversing carriage 2 is installed on fixed support 1 and can moves in moving direction, traversing carriage 2 is positioned at the below that drags connecting plate 6, the first end of drag chain 5 and fixed support 1 are all fixedly installed on the support (parts that the application of drag chain 5 comprises or ground all can) of same level, the first end of drag chain 5 is near the second end of fixed support 1, the second end of drag chain 5 is walked around after the first end of traversing carriage 2 and is fixed on and drags on connecting plate 6, two pulleys 3 are installed on respectively the outside of first end and second end of traversing carriage 2, the first end of two tow ropes 4 is connected to and drags the position that is positioned at drag chain 5 both sides on connecting plate 6, wherein the second end of a tow rope 4 is walked around the outside that is connected in the second end of fixed support 1 after the pulley 3 of a first end that is installed on traversing carriage 2, the second end of another root tow rope 4 is walked around the outside that is connected in the first end of fixed support 1 after the pulley 3 of second end that is installed on traversing carriage 2.
Said structure is the overall structure of super gravity field drag chain support device described in the utility model, particularly, and the preferred following structure of each parts:
As shown in Figure 1, Figure 2 with shown in Fig. 9, fixed support 1 comprises two fixed support unit (seeing Fig. 2) that are arranged in parallel, each fixed support unit comprises " Contraband " shape body 11, the top plate of " Contraband " shape body 11 is provided with the guide rails assembling hole 14 for mounting guide rail 7, the lower panel of " Contraband " shape body 11 is provided with the support mounting hole 13 for mounting and fixing bracket unit, the middle part vertical panel of " Contraband " shape body 11 is provided with lightening hole 15, and the two ends of " Contraband " shape body 11 are provided with the projection 12 for fixed tractive 4; Drag chain 5 is placed between two fixed support unit; Above two fixed support unit, guide rail 7 is installed, traversing carriage 2 is positioned on guide rail 7; Drag below connecting plate 6 and be respectively equipped with the bulge loop 61 for connecting tow rope 4 near the position of drag chain 5 both sides, the plate body that drags connecting plate 6 is provided with installation circular hole 62 and the bar shaped lightening hole 63 for drag chain 5 is installed, and drags the afterbody of connecting plate 6 for being connected with moving member.
As shown in Fig. 1, Fig. 3-Fig. 8, it is axially the crossbeam 21 of moving direction that traversing carriage 2 is provided with two, article two, between crossbeam 21, be provided with the connecting rod 24 that axial direction is vertical with moving direction, article two, on crossbeam 21, be respectively equipped with multiple for the circular hole 25 of roller 27 is installed, article two, between crossbeam 21, the position between adjacent connecting rod 24 is provided with multiplely for supporting the roller 27 of drag chain 5 by strut 26, and the axial direction of roller 27 is vertical with moving direction; Article two, the outside, two ends that crossbeam 21 is contrary is respectively equipped with the installation shaft 23 for pulley 3 is installed, the outer end of installation shaft 23 is provided with screw thread, spacing to pulley 3 for mounting nuts (figure is unmarked), article two, below crossbeam 21, be provided with for making crossbeam 21 be limited in the slide block 22 on guide rail 7, multiple slide blocks 22 are installed on each crossbeam 21; The two ends external diameter of pulley 3 is greater than stage casing external diameter; In installation shaft 23 between pulley 3 and nut, between pulley 3 and crossbeam 21, pad (unmarked in figure) is installed; Roller 27 can be with materials processings such as teflon.
As shown in Figure 1, when work, dragging connecting plate 6, to follow moving member reciprocating in moving direction, which no matter to direction move, drag connecting plate 6 and all can drive the first end of two tow ropes 4 to be synchronized with the movement, after pulley 3 transmissions, because the second end of tow rope 4 is fixedly connected on fixed support 1, so tow rope 4 can band movable pulleys 3 and traversing carriage 2 move, its moving direction is with to drag connecting plate 6 consistent.In two pulleys 3, the motion of a pulley 3 is the active motion that drives traversing carriage 2 to move, and the motion of another pulley 3 is the passive motion-type exercise that is driven motion by traversing carriage 2.This two pulleys 3 and the structure that traversing carriage 2 is synchronized with the movement, guarantee that traversing carriage 2 at any time all can not cause mistake displacement because of external force such as the frictional force of centrifugal force or drag chain 5; Under the effect of pulley 3; the length of traversing carriage 2 only needs the nearly half of drag chain 5 strokes can realize an overfill protection of drag chain 5 total travels; the movement velocity of traversing carriage 2 is the nearly half that drags connecting plate 6, and pulling force has increased nearly one times, is more convenient to realize the flexible motion of traversing carriage 2.
Above-described embodiment is preferred embodiment of the present utility model; it is not the restriction to technical solutions of the utility model; as long as the technological scheme that can realize on the basis of above-described embodiment without creative work, all should be considered as falling within the scope of the rights protection of the utility model patent.
Claims (7)
1. a super gravity field drag chain support device, it is characterized in that: comprise and drag connecting plate, fixed support, traversing carriage, pulley and tow rope, the described connecting plate that drags is for being connected with moving member, the actual direction that moves back and forth that drags connecting plate described in definition is moving direction, the first end of described traversing carriage in described moving direction is near described support bracket fastened first end, second end of described traversing carriage in described moving direction is near described support bracket fastened the second end, described traversing carriage is installed on described fixed support and can moves in described moving direction, described in being positioned at, described traversing carriage drags the below of connecting plate, the first end of described drag chain and described fixed support are all fixedly installed on the support of same level, the first end of described drag chain is near described support bracket fastened the second end, the second end of described drag chain is walked around described in being fixed on after the first end of described traversing carriage and is dragged on connecting plate, two described pulleys are installed on respectively the outside of first end and second end of described traversing carriage, described in being connected to, the first end of two described tow ropes drags on connecting plate, wherein the second end of a described tow rope is walked around the outside that is connected in described support bracket fastened the second end after the described pulley of a first end that is installed on described traversing carriage, described in another root, the second end of tow rope is walked around the outside that is connected in described support bracket fastened first end after the described pulley of second end that is installed on described traversing carriage.
2. super gravity field drag chain support device according to claim 1, is characterized in that: described in the first end of two described tow ropes is connected to, drag the position that is positioned at described drag chain both sides on connecting plate.
3. super gravity field drag chain support device according to claim 1 and 2, is characterized in that: described fixed support comprises two fixed support unit that are arranged in parallel, and described drag chain is placed between two described fixed support unit.
4. super gravity field drag chain support device according to claim 3, is characterized in that: above two described fixed support unit, guide rail is installed, described traversing carriage is positioned on described guide rail.
5. super gravity field drag chain support device according to claim 4, it is characterized in that: it is axially the crossbeam of described moving direction that described traversing carriage is provided with two, article two, between described crossbeam, be provided with multiplely for supporting the roller of described drag chain, the axial direction of described roller is vertical with described moving direction.
6. super gravity field drag chain support device according to claim 5, is characterized in that: below described crossbeam, be provided with for multiple and make described crossbeam be limited in the slide block on described guide rail.
7. super gravity field drag chain support device according to claim 5, is characterized in that: the two ends external diameter of described roller is greater than stage casing external diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420246222.7U CN203809604U (en) | 2014-05-15 | 2014-05-15 | High-gravity-field drag chain supporting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420246222.7U CN203809604U (en) | 2014-05-15 | 2014-05-15 | High-gravity-field drag chain supporting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203809604U true CN203809604U (en) | 2014-09-03 |
Family
ID=51448358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420246222.7U Expired - Lifetime CN203809604U (en) | 2014-05-15 | 2014-05-15 | High-gravity-field drag chain supporting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203809604U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953687A (en) * | 2014-05-15 | 2014-07-30 | 中国工程物理研究院总体工程研究所 | High gravity field drag-chain supporting device |
| CN111558786A (en) * | 2020-07-15 | 2020-08-21 | 佛山汇百盛激光科技有限公司 | Laser cutting machine |
| CN113829388A (en) * | 2021-10-25 | 2021-12-24 | 上海建冶科技股份有限公司 | Gantry type robot anti-chain-dropping system |
-
2014
- 2014-05-15 CN CN201420246222.7U patent/CN203809604U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953687A (en) * | 2014-05-15 | 2014-07-30 | 中国工程物理研究院总体工程研究所 | High gravity field drag-chain supporting device |
| CN103953687B (en) * | 2014-05-15 | 2015-09-16 | 中国工程物理研究院总体工程研究所 | Super gravity field drag chain support device |
| CN111558786A (en) * | 2020-07-15 | 2020-08-21 | 佛山汇百盛激光科技有限公司 | Laser cutting machine |
| CN113829388A (en) * | 2021-10-25 | 2021-12-24 | 上海建冶科技股份有限公司 | Gantry type robot anti-chain-dropping system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203809604U (en) | High-gravity-field drag chain supporting device | |
| CN105065044B (en) | Hydraulic support removing platform | |
| CN103953687B (en) | Super gravity field drag chain support device | |
| CN204159041U (en) | The translation lifting rotation stage property rack device that performing art place uses | |
| CN101007618B (en) | Swing winch rope-discharging method and device | |
| CN105337218A (en) | Power transmission line lifting device | |
| CN103047394B (en) | Rotary drilling rig and guide pulley yoke device thereof | |
| CN203809005U (en) | Compact mine quarrying machine | |
| CN201031793Y (en) | Low type completely balancing long stroke beam-pumping unit | |
| CN102992118A (en) | Cable take-up and pay-off device of press travelling table | |
| CN104234670B (en) | A kind of tower linear oil pumping machine | |
| CN206737820U (en) | A kind of self-propelled large-tonnage horizontal directional drilling machine | |
| CN215341491U (en) | Electric power is electric power training device for power worker | |
| CN102530309B (en) | Turning cup-grabbing system | |
| CN205999960U (en) | A kind of pot hole drilling and digging machine | |
| CN203903936U (en) | Lifting mechanism | |
| CN106120933B (en) | A kind of pot hole drilling and digging machine | |
| CN103264881B (en) | Ribbon conveyer hoisting type automatic deviation rectifying device | |
| CN102350448A (en) | Cantilever pay-off automatic conversion device | |
| CN105538319A (en) | Lion dance robot | |
| CN202266632U (en) | Device for preventing swinging of counter weight for engineering machinery | |
| CN201599009U (en) | Pulley block transmission-type oil pumping unit | |
| CN205778617U (en) | A kind of oil pipe transportation device | |
| CN108277708B (en) | A kind of track geometry measuring device | |
| CN203295607U (en) | Spraying system and a wet etching device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |