CN209444737U - A kind of automatic locking apparatus anti-fall for road and bridge machinery - Google Patents
A kind of automatic locking apparatus anti-fall for road and bridge machinery Download PDFInfo
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- CN209444737U CN209444737U CN201821959647.7U CN201821959647U CN209444737U CN 209444737 U CN209444737 U CN 209444737U CN 201821959647 U CN201821959647 U CN 201821959647U CN 209444737 U CN209444737 U CN 209444737U
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Abstract
The utility model provides a kind of automatic locking apparatus anti-fall for road and bridge machinery, the mobile or fixed automatic locking apparatus on the slideway on the top of road and bridge machinery of the counter-pressure roller as the lower part for making to be set to road and bridge machinery；Device provided by the utility model belongs to normally closed type mechanism, fail safe, high reliablity；PLC and hydraulic system automatically control simultaneously, do not depend on the experience of people, practical；It is controlled by pressure, neither influences to use, and can ensure that under any circumstance equipment does not glide；Device overall structure is small, light-weight, can more be independently arranged, and use scope is wide, is transformed versatile.
Description
Technical field
It is the utility model relates to technical field of bridge construction, in particular to a kind of for road and bridge mechanical anti-fall automatic lock
Determine device.
Background technique
At present road and bridge it is mechanical in use, since there are head falls to mention to reduce the complete machine height of equipment for bridge
High stability, when the gradient is larger, often band slope carries out mobile and crosses across therefore producing additional suitable hill wash row equipment
Power.
It mostly uses slide plate and idler wheel to contact between the upper and lower part of road and bridge machinery, also often smears lubrication in contact surface
Rouge leads to anti-fall effective skin friction very little, and uncontrollable and accurate calculating.Since equipment exists centainly when moving
Movement impact, it is exactly that machine is ruined that the influence of wind-force and along slope skidding forces in addition, which causes the risk to glide larger, and once glides
The accident that people dies.
Based on this, in view of the deficiencies of the prior art, needs one kind that can prevent equipment from gliding, ensures the automatic lock of construction safety
Determine mechanism to be devised.
Utility model content
The utility model provides a kind of automatic locking mechanism that can be prevented equipment downslide, ensure construction safety.
The utility model in order to solve the above problem the technical solution adopted is that:
A kind of back-pressure for road and bridge mechanical anti-fall automatic locking apparatus, as the lower part for making to be set to road and bridge machinery
Idler wheel mobile or fixed automatic locking apparatus on the slideway on the top of road and bridge machinery, comprising:
Pressure engaging portion, including cam, slideway and counter-pressure roller, the counter-pressure roller include rolling to be arranged in slideway one end
The first idler wheel and roll the second idler wheel of the slideway other end be set, be provided with cam below first idler wheel；
Mounting portion, including the first mounting plate, mounting base and the second mounting plate set gradually, first mounting plate upper end
Rotatably be provided with the first idler wheel, second mounting plate upper end is rotatably provided with the second idler wheel, first mounting plate and
Connecting rod is provided between mounting base, one end of the connecting rod is rotatably connected on the first mounting plate, the other end of the connecting rod
It is rotatably connected in mounting base；
Driving portion, including self-locking oil cylinder and pipe bending cylinder, the self-locking oil cylinder are fixed on the lower part of the first mounting plate, and certainly
The end for locking the movable end of oil cylinder is rotatably connected and has cam, is rotatably connected in mounting base in the middle part of the pipe bending cylinder,
The movable end of the pipe bending cylinder is rotatably connected in the lower part of the second mounting plate；
Hydraulic control system, including PLC controller and hydraulic station, the PLC controller are electrically connected hydraulic station, the liquid
Self-locking oil cylinder and pipe bending cylinder are connected separately on pressure station, the PLC controller is acted and connect by hydraulic station control driving portion
It is driven portion's feedback signal.
Further, high pressure spring is provided in the rodless cavity of the self-locking oil cylinder.
Further, there are two the cam is symmetrical arranged centered on self-locking oil cylinder.
Further, several teeth are provided on the contact surface of the cam and the first idler wheel.
Further, the hydraulic station includes:
Fuel tank；
Pipeline road；And
Control valve group has oil inlet, oil return opening and the first actuator port set gradually, the second actuator port, the
Three actuator ports, the 4th actuator port, the oil inlet and oil return opening are connected to fuel tank, first work by pipeline road
Hydraulic fluid port is connected with the rodless cavity of pipe bending cylinder, and second actuator port is connected with the rod chamber of pipe bending cylinder, the third work
Make hydraulic fluid port to be connected with the rodless cavity of self-locking oil cylinder, the 4th actuator port is connected with the rod chamber of self-locking oil cylinder；
Wherein, the PLC controller passes through the first actuator port and the second actuator port for controlling the control valve group
So that pipe bending cylinder is stretched out or is bounced back, so that self-locking oil cylinder is stretched out or is bounced back by third actuator port and the 4th actuator port, it is described
Pipeline road and control valve group are set as integrated oil path block structure or Hydraulic Elements dispersed placement structure.
Further, the fuel tank side is provided with liquidometer, and air filter is provided in fuel tank.
Further, return filter, the oil inlet are provided on the pipeline road between the oil return opening and fuel tank
Check valve, motor pump group and oil sucting valve are disposed on pipeline road between mouth and fuel tank.
Further, the first solenoid directional control valve, the second solenoid directional control valve and third electromagnetic switch are provided in control block
Valve, first solenoid directional control valve are two position two-way valve, and second solenoid directional control valve and third solenoid directional control valve are three
Four-way valve, first solenoid directional control valve, the second solenoid directional control valve and third solenoid directional control valve respectively with oil inlet, oil return opening
Circuit is formed, the first safety valve has also been arranged in parallel on first solenoid directional control valve, has been arranged on second solenoid directional control valve
There are the first actuator port and the second actuator port, third actuator port and the 4th work are provided on the third solenoid directional control valve
Hydraulic fluid port.
Further, it is respectively provided on the pipeline road between the rodless cavity and rod chamber and control block of the pipe bending cylinder
There is balanced valve, is additionally provided with pressure sensing on the pipeline road between the rodless cavity of the pipe bending cylinder and the first actuator port
Device.
Further, it is set gradually on the output pipe between the rodless cavity of the self-locking oil cylinder and third actuator port
There are pressure sensor, the second safety valve and counterbalance valve, second safety valve is additionally coupled to oil return opening, and the self-locking oil cylinder has
Solenoid ball valve is provided on output pipe between rod cavity and the 4th actuator port, the rod chamber of the self-locking oil cylinder, which is also connected with, to be set
It is equipped with close to switch.
Compared with the prior art, the advantages of the utility model are:
Device provided by the utility model belongs to normally closed type mechanism, fail safe, high reliablity；PLC and hydraulic pressure system simultaneously
System automatically controls, and does not depend on the experience of people, practical；It is controlled by pressure, neither influences to use, and can be under any circumstance
Ensure that equipment does not glide；Device overall structure is small, light-weight, can more be independently arranged, and use scope is wide, is transformed versatile.
Detailed description of the invention
Fig. 1 is the structural schematic diagram in the utility model one embodiment；
Fig. 2 is the structural schematic diagram of hydraulic control system in the utility model one embodiment；
Fig. 3 is the workflow schematic diagram in the utility model one embodiment；
Fig. 4 is the structural schematic diagram of cam in the utility model one embodiment.
Description of symbols:
01, counter-pressure roller, 01a, the first idler wheel, 01b, the second idler wheel, 02, cam, 03, self-locking oil cylinder, 04, slideway, 05,
Pipe bending cylinder, 06, PLC controller, 07, hydraulic station, the 08, first mounting plate, 09, mounting base, the 010, second mounting plate, 011, company
Bar, 1, fuel tank, 2, liquidometer, 3, motor pump group, 4, draining valve, 5, oil sucting valve, 6, check valve, 7, return filter, 8, air filter
Device, 9, integrated oil path block structure, the 10, first safety valve, the 11, first solenoid directional control valve, the 12, second solenoid directional control valve, 12a,
One actuator port, 12b, the second actuator port, 13, third solenoid directional control valve, 13a, third actuator port, 13b, the 4th work
Hydraulic fluid port, 14, counterbalance valve, the 15, second safety valve, 16, Solenoid ball valve, 17, pressure sensor, 18, high pressure spring, 19, close to opening
It closes, 20, balanced valve.
Specific embodiment
With reference to the accompanying drawing, a specific embodiment of the utility model is described in detail, it is to be understood that this
The protection scope of utility model is not limited by the specific implementation.
As depicted in figs. 1 and 2, provided by the embodiment of the utility model a kind of for road and bridge mechanical anti-fall automatic locking
Device, as moving the counter-pressure roller 01 for the lower part for being set to road and bridge machinery on the slideway 04 on the top of road and bridge machinery or solid
Fixed automatic locking apparatus, comprising:
Pressure engaging portion, including cam 02, slideway 04 and counter-pressure roller 01, the counter-pressure roller 01 include rolling setting
In the first idler wheel 01a of 04 one end of slideway and rolling, the second idler wheel 01b of 04 other end of slideway, first idler wheel are set
Cam 02 is provided with below 01a；
Mounting portion, including the first mounting plate 08, mounting base 09 and the second mounting plate 010 set gradually, first peace
08 upper end of loading board is rotatably provided with the first idler wheel 01a, and 010 upper end of the second mounting plate is rotatably provided with the second idler wheel
01b, is provided with connecting rod 011 between first mounting plate 08 and mounting base 09, one end of the connecting rod 011 is rotatably connected
On first mounting plate 08, the other end of the connecting rod 011 is rotatably connected in mounting base 09；
Driving portion, including self-locking oil cylinder 03 and pipe bending cylinder 05, the self-locking oil cylinder 03 are fixed on the first mounting plate 08
Lower part, and the end of the movable end of self-locking oil cylinder 03 is rotatably connected cam 02, the middle part of the pipe bending cylinder 05 can be rotated
It is connected in mounting base 09, the movable end of the pipe bending cylinder 05 is rotatably connected in the lower part of the second mounting plate 010；
Hydraulic control system, including PLC controller 06 and hydraulic station 07, the PLC controller 06 are electrically connected hydraulic station
07, self-locking oil cylinder 03 and pipe bending cylinder 05 are connected separately on the hydraulic station 07, and the PLC controller 06 passes through hydraulic station
07 control driving portion acts and receives driving portion feedback signal.
When it is implemented, being provided with high pressure spring 18 in the rodless cavity of the self-locking oil cylinder 03.
When it is implemented, as shown in figure 4, there are two the cam 02 is arranged symmetrically centered on self-locking oil cylinder 03.
When it is implemented, being provided with several teeth on the contact surface of the cam 02 and the first idler wheel 01a, increase locking
Power.
When it is implemented, the hydraulic station 07 includes:
Fuel tank 1；
Pipeline road；And
Control valve group has oil inlet, oil return opening and the first actuator port 12a, the second actuator port set gradually
12b, third actuator port 13a, the 4th actuator port 13b, the oil inlet and oil return opening are connected to fuel tank by pipeline road
1, the first actuator port 12a is connected with the rodless cavity of pipe bending cylinder 05, the second actuator port 12b and pipe bending cylinder 05
Rod chamber be connected, the third actuator port 13a is connected with the rodless cavity of self-locking oil cylinder 03, the 4th actuator port 13b
It is connected with the rod chamber of self-locking oil cylinder 03；
Wherein, PLC controller 06 passes through the first actuator port 12a and the second working oil for controlling the control valve group
Mouth 12b makes pipe bending cylinder 05 stretch out or bounce back, and makes self-locking oil cylinder 03 by third actuator port 13a and the 4th actuator port 13b
It stretches out or bounces back, the pipeline road and control valve group are set as integrated oil path block structure 9 or Hydraulic Elements dispersed placement knot
Structure.
When it is implemented, 1 side of fuel tank is provided with liquidometer 2, and air filter 8 is provided in fuel tank 1.
When it is implemented, be provided with return filter 7 on pipeline road between the oil return opening and fuel tank 1, it is described into
Check valve 6, motor pump group 3 and oil sucting valve 5 are disposed on pipeline road between hydraulic fluid port and fuel tank 1.
When it is implemented, being provided with the first solenoid directional control valve 11, the second solenoid directional control valve 12 and third in the control block
Solenoid directional control valve 13, first solenoid directional control valve 11 are two position two-way valve, second solenoid directional control valve 12 and third electromagnetism
Reversal valve 13 is three-position four-way valve, first solenoid directional control valve 11, the second solenoid directional control valve 12 and third solenoid directional control valve
13 form circuit with oil inlet, oil return opening respectively, have also been arranged in parallel the first safety valve on first solenoid directional control valve 11
10, the first actuator port 12a and the second actuator port 12b, the third electromagnetism are provided on second solenoid directional control valve 12
Third actuator port 13a and the 4th actuator port 13b are provided on reversal valve 13.
When it is implemented, being all provided on pipeline road between the rodless cavity and rod chamber and control block of the pipe bending cylinder 05
It is equipped with balanced valve 20, is additionally provided on the pipeline road between the rodless cavity of the pipe bending cylinder 05 and the first actuator port 12a
Pressure sensor 17.
When it is implemented, on output pipe between the rodless cavity and third actuator port 13a of the self-locking oil cylinder 03 according to
Secondary to be provided with pressure sensor 17, the second safety valve 15 and counterbalance valve 14, second safety valve 15 is additionally coupled to oil return opening, institute
State and be provided with Solenoid ball valve 16 on the output pipe between the rod chamber of self-locking oil cylinder 03 and the 4th actuator port 13b, it is described from
The rod chamber of lock oil cylinder 03, which is also connected with, to be provided with close to switch 19.
On the basis of above scheme, the utility model is not under the premise of influencing equipment use, by increasing a set of volume
Outer automatic locking mechanism, to prevent equipment from gliding, ensure it is mobile and cross across safety, and the movement for locking and unlocking be by
Hydraulic control system automatically controls.
The technical solution of the utility model is realized by three aspects:
(1) automatic locking: using the bounce of high pressure spring 18, amplified by cam 02, made in the form of double-sided clamp
It uses on equipment slideway 04, latching force is exponentially increased trend with the stroke of clamping, and is locked as closed type structure, failure lock
It is fixed；
(2) it unlocks: being compressed high pressure spring 18 by self-locking oil cylinder 03, so that cam 02 and slideway 04 unclamp, reach
To the purpose of unlocking, equipment can be carried out mobile or be crossed across operation at this time；
(3) hydraulic control system needs 120bar or more ability pushing equipment in use, calculating pipe bending cylinder 05, will
System design temperature is set as 315bar, and the unlocking pressure of self-locking mechanism is arranged in 100bar, when 05 pressure reduction of pipe bending cylinder
When to 100bar or less, self-locking mechanism automatically lock.
I.e. in hydraulic control system provided by the utility model, set the rated pressure of the first safety valve 10 to
315bar, the rodless cavity side rated pressure that balanced valve 20 connects pipe bending cylinder 05 are set as 230bar, and balanced valve 20 connects pushing tow
The rod chamber side rated pressure of oil cylinder 05 is set as 150bar, and the operating pressure of the second safety valve 15 is set as 100bar, pressure
The rated pressure of sensor 17 is set as 100bar, can detect pressure state constantly, and the rod chamber of self-locking oil cylinder 03 is equipped with
Close to switch 19, to reflect the unlocking of lock-bit/shut state constantly, pressure value and lock-bit state feed back to PLC controller 06 into
Row monitoring.
As shown in figure 3, the working process of the utility model is as follows:
Under normality, self-locking mechanism opens PLC controller 06 and liquid when equipment needs mobile all in the state of locking
The switch at pressure station 07, operation pipe bending cylinder 05 act, and pressure is stepped up, and when pressure is more than 100bar, self-locking mechanism is unlocked,
When pressure continues to rise to 120bar, equipment starts in movement.When equipment is moved to designated position or a shift motion
After the completion, pipe bending cylinder 05 starts to retract, and hydraulic system moment unloading, self-locking mechanism also is completed to lock in moment.When equipment exists
When having the tendency that downslide during pushing tow, the pressure of pipe bending cylinder 05 can also reduce at once, as the near 100bar or less of pressure
When, self-locking mechanism also can instantaneous-locking equipment, prevent from gliding.
All has locomotive function more than 95% road and bridge machinery, the bridge head fall more than 50% is more than 2%, and this is practical
Novel to apply in all walking pushing tow mobile devices, application is extensive, and demand is huge, high reliablity.
Disclosed above is only several specific embodiments of the utility model, and still, the utility model embodiment is not office
It is limited to this, the changes that any person skilled in the art can think of should all fall into the protection scope of the utility model.
Claims (10)
1. a kind of for road and bridge mechanical anti-fall automatic locking apparatus, the back-pressure as the lower part for making to be set to road and bridge machinery is rolled
Take turns (01) mobile or fixed automatic locking apparatus on the slideway (04) on the top of road and bridge machinery characterized by comprising
Pressure engaging portion, including cam (02), slideway (04) and counter-pressure roller (01), the counter-pressure roller (01) include rolling to set
It sets and the second idler wheel (01b) in slideway (04) other end is set in first idler wheel (01a) of slideway (04) one end and rolling, it is described
Cam (02) is provided with below first idler wheel (01a)；
Mounting portion, including the first mounting plate (08), mounting base (09) and the second mounting plate (010) set gradually, described first
Mounting plate (08) upper end is rotatably provided with the first idler wheel (01a), and the second mounting plate (010) upper end is rotatably provided with
Second wheel (01b) is provided with connecting rod (011) between first mounting plate (08) and mounting base (09), the connecting rod (011)
One end is rotatably connected on the first mounting plate (08), and the other end of the connecting rod (011) is rotatably connected in mounting base (09)
On；
Driving portion, including self-locking oil cylinder (03) and pipe bending cylinder (05), the self-locking oil cylinder (03) are fixed on the first mounting plate
(08) lower part, and the end of the movable end of self-locking oil cylinder (03) is rotatably connected and has cam (02), the pipe bending cylinder (05)
Middle part be rotatably connected on mounting base (09), the movable end of the pipe bending cylinder (05) is rotatably connected in the second mounting plate
(010) lower part；
Hydraulic control system, including PLC controller (06) and hydraulic station (07), the PLC controller (06) are electrically connected hydraulic
It stands (07), self-locking oil cylinder (03) and pipe bending cylinder (05), the PLC controller (06) is connected separately on the hydraulic station (07)
It is acted by hydraulic station (07) control driving portion and receives driving portion feedback signal.
2. according to claim 1 a kind of for road and bridge mechanical anti-fall automatic locking apparatus, it is characterised in that: described
High pressure spring (18) are provided in the rodless cavity of self-locking oil cylinder (03).
3. according to claim 1 a kind of for road and bridge mechanical anti-fall automatic locking apparatus, it is characterised in that: described
There are two cam (02) is symmetrical arranged centered on self-locking oil cylinder (03).
4. according to claim 1 a kind of for road and bridge mechanical anti-fall automatic locking apparatus, it is characterised in that: described
Several teeth are provided on the contact surface of cam (02) and the first idler wheel (01a).
5. according to claim 1 a kind of for road and bridge mechanical anti-fall automatic locking apparatus, which is characterized in that described
Hydraulic station (07) includes:
Fuel tank (1)；
Pipeline road；And
Control valve group has oil inlet, oil return opening and the first actuator port (12a), the second actuator port set gradually
(12b), third actuator port (13a), the 4th actuator port (13b), the oil inlet are connected with oil return opening by pipeline road
To fuel tank (1), first actuator port (12a) is connected with the rodless cavity of pipe bending cylinder (05), second actuator port
(12b) is connected with the rod chamber of pipe bending cylinder (05), the rodless cavity phase of the third actuator port (13a) and self-locking oil cylinder (03)
Even, the 4th actuator port (13b) is connected with the rod chamber of self-locking oil cylinder (03)；
Wherein, the PLC controller (06) passes through the first actuator port (12a) and the second work for controlling the control valve group
Making hydraulic fluid port (12b) makes pipe bending cylinder (05) to stretch out or bounce back, and passes through third actuator port (13a) and the 4th actuator port (13b)
Self-locking oil cylinder (03) is set to stretch out or bounce back, the pipeline road and control valve group are set as integrated oil path block structure (9) or liquid
Press element dispersed placement structure.
6. according to claim 5 a kind of for road and bridge mechanical anti-fall automatic locking apparatus, it is characterised in that: described
Fuel tank (1) side is provided with liquidometer (2), and is provided with air filter (8) in fuel tank (1).
7. according to claim 5 a kind of for road and bridge mechanical anti-fall automatic locking apparatus, it is characterised in that: described
It is provided on pipeline road between oil return opening and fuel tank (1) return filter (7), between the oil inlet and fuel tank (1)
Check valve (6), motor pump group (3) and oil sucting valve (5) are disposed on pipeline road.
8. according to claim 5 a kind of for road and bridge mechanical anti-fall automatic locking apparatus, it is characterised in that: control
It is provided with the first solenoid directional control valve (11), the second solenoid directional control valve (12) and third solenoid directional control valve (13) in block, described first
Solenoid directional control valve (11) is two position two-way valve, and second solenoid directional control valve (12) and third solenoid directional control valve (13) are three
Four-way valve, first solenoid directional control valve (11), the second solenoid directional control valve (12) and third solenoid directional control valve (13) respectively and
Oil inlet, oil return opening form circuit, have also been arranged in parallel the first safety valve (10) on first solenoid directional control valve (11), described
The first actuator port (12a) and the second actuator port (12b) are provided on second solenoid directional control valve (12), the third electromagnetism changes
Third actuator port (13a) and the 4th actuator port (13b) are provided on valve (13).
9. according to claim 5 a kind of for road and bridge mechanical anti-fall automatic locking apparatus, it is characterised in that: described
Balanced valve (20), the top are provided on pipeline road between the rodless cavity and rod chamber and control block of pipe bending cylinder (05)
Pressure sensor (17) are additionally provided on pipeline road between the rodless cavity and the first actuator port (12a) of push oil cylinder (05).
10. according to claim 5 a kind of for road and bridge mechanical anti-fall automatic locking apparatus, it is characterised in that: institute
It states and is disposed with pressure sensor on the output pipe between the rodless cavity of self-locking oil cylinder (03) and third actuator port (13a)
(17), the second safety valve (15) and counterbalance valve (14), second safety valve (15) are additionally coupled to oil return opening, the self-locking oil cylinder
(03) it is provided with Solenoid ball valve (16) on the output pipe between rod chamber and the 4th actuator port (13b), the self-locking oil
The rod chamber of cylinder (03), which is also connected with, to be provided with close to switch (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821959647.7U CN209444737U (en) | 2018-11-26 | 2018-11-26 | A kind of automatic locking apparatus anti-fall for road and bridge machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821959647.7U CN209444737U (en) | 2018-11-26 | 2018-11-26 | A kind of automatic locking apparatus anti-fall for road and bridge machinery |
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| Publication Number | Publication Date |
|---|---|
| CN209444737U true CN209444737U (en) | 2019-09-27 |
Family
ID=68011980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821959647.7U Active CN209444737U (en) | 2018-11-26 | 2018-11-26 | A kind of automatic locking apparatus anti-fall for road and bridge machinery |
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| Country | Link |
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| CN (1) | CN209444737U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404440A (en) * | 2018-11-26 | 2019-03-01 | 合建卡特（芜湖）重工科技有限公司 | A kind of automatic locking apparatus anti-fall for road and bridge machinery |
-
2018
- 2018-11-26 CN CN201821959647.7U patent/CN209444737U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404440A (en) * | 2018-11-26 | 2019-03-01 | 合建卡特（芜湖）重工科技有限公司 | A kind of automatic locking apparatus anti-fall for road and bridge machinery |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210407 Address after: 436000 Wuhan fanken intelligent equipment plant 1, Wuhan Port Industrial Park, Ezhou Economic Development Zone, Hubei Province Patentee after: Joint Construction Carter (Wuhan) Heavy Engineering Technology Co.,Ltd. Address before: 241000, No. 469, Xici 6th Road, East District, Wuhu Machinery Industrial Park, Wuhu City, Anhui Province Patentee before: HEJIAN KATE (WUHU) HEAVY INDUSTRY TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right |