CN104291230B - Novel mechanical speed governing mine hoist control device mechanical, electrical, liquid integrated - Google Patents
Novel mechanical speed governing mine hoist control device mechanical, electrical, liquid integrated Download PDFInfo
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- CN104291230B CN104291230B CN201410452256.6A CN201410452256A CN104291230B CN 104291230 B CN104291230 B CN 104291230B CN 201410452256 A CN201410452256 A CN 201410452256A CN 104291230 B CN104291230 B CN 104291230B
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- speed governing
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- dish type
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- 239000007788 liquid Substances 0.000 title claims abstract description 21
- 230000004224 protection Effects 0.000 claims description 43
- 238000005299 abrasion Methods 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 230000037452 priming Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 26
- 238000010586 diagram Methods 0.000 description 5
- 239000010720 hydraulic oil Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 206010027476 Metastases Diseases 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009401 metastasis Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
- B66D1/40—Control devices
Abstract
The present invention relates to mine hoist technical field, disclose a kind of novel mechanical speed governing mine hoist control device mechanical, electrical, liquid integrated, the mine winch with dish type speed governing lock and disc braking lock is controlled, including the flame-proof type Hydraulic Station using two independent oil circuits to provide pressure oil respectively to dish type speed governing lock and disc braking lock, and control the flame-proof type master console of described flame-proof type Hydraulic Station work.The present invention controls device the mine car speed of service can be made when realizing the priming speed required for winch slow, again can be the optimum state of heavy lift, and safety arrestment is reliable when stopping.
Description
Technical field
The present invention relates to mine hoist technical field, more specifically, particularly to a kind of Novel machine
Tool speed governing mine hoist control device mechanical, electrical, liquid integrated.
Background technology
Monoblock type JTKB-1.2 mine hoist is block formula speed governing and braking at present, uses mechanical block formula system
Moving and realize the starting of winch, run, stop, winch itself is only with overtravel protection, other protection
Back-up protection instrument is then relied on to realize.Its shortcoming is:
1, safety arrestment uses block brake, and the size of brake force relies on the weight of balancing weight；
2, speed governing lock and work lock manually manipulation operations handle complete, and operating physical force is big, and long-term work allows
People is tired, and the proficient of its operating characteristics and people has much relations；
3, winch itself can only realize overtravel protection, and various protections rely on back-up protection instrument to realize, so
Country's peace mark is done and is terminated the peace mark of JTKB-1.2 block brake hoisting gear in June, 10；
4, in speed regulation process, the brake block quick abrasion on brake shoe, it is difficult to during speed governing find clutch point, because of
And required speed can not be realized at all and to make the winch speed of service slow, again can be heavy lift
Optimum state.
Summary of the invention
It is an object of the invention to provide that a kind of novel mechanical speed governing mine hoist is mechanical, electrical, liquid one
Changing and control device, this control device can make mine car run speed when realizing the priming speed required for winch
Degree is slow, again can be the optimum state of heavy lift, and safety arrestment is reliable when stopping.
In order to solve posed problems above, the technical solution used in the present invention is: a kind of novel mechanical is adjusted
Speed mine hoist control device mechanical, electrical, liquid integrated, to having dish type speed governing lock and disc braking
The mine winch of lock is controlled, including using two independent oil circuits respectively to dish type speed governing lock and dish type
Damper brake provides the flame-proof type Hydraulic Station of pressure oil, and controls the flame proof of described flame-proof type Hydraulic Station work
Type master console；
Described flame-proof type master console includes valve group, disc braking lock control proportional pressure control valve, the first liquid
Dynamic reversal valve, accumulator, the second hydraulicchange-over valve, dish type speed governing lock control proportional pressure control valve and electromagnetism
Valve, described disc braking lock control proportional pressure control valve and dish type speed governing lock control proportional pressure control valve are the most logical
Cross valve group, electromagnetic valve to disc braking lock and the offer pressure oil of dish type speed governing lock independence, described first liquid
Dynamic reversal valve and the second hydraulicchange-over valve respectively with disc braking lock control proportional pressure control valve and dish type speed governing
Lock control proportional pressure control valve connects, and described accumulator provides power for this flame-proof type master console；
Described flame-proof type master console is provided with PLC logic control element, with PLC logic control element even
Dish type speed governing lock control unit, disc braking lock control unit, Hydraulic Station keying control unit and the connection connect
Lock protection control unit；Described dish type speed governing lock control unit and disc braking lock control unit are passed through respectively
With dish type speed governing after dish type speed governing lock control proportional pressure control valve and disc braking lock control proportional pressure control valve
Lock and disc braking lock connect, and described Hydraulic Station opens and closes control unit and is connected with flame-proof type master console.
According to a preferred embodiment of the invention: described dish type speed governing lock control unit includes speed governing lock handle
With speed governing lock proportional amplifier, described speed governing lock handle by after PLC logic control element with speed governing lock ratio
Example amplifier connects, described speed governing lock proportional amplifier by dish type speed governing lock controls proportional pressure control valve and
Dish type speed governing lock connects.
According to a preferred embodiment of the invention: described disc braking lock control unit includes damper brake handle
With damper brake proportional amplifier, described damper brake handle by after PLC logic control element with damper brake ratio
Example amplifier connects, described damper brake proportional amplifier by disc braking lock controls proportional pressure control valve and
Disc braking lock connects.
According to a preferred embodiment of the invention: described flame-proof type Hydraulic Station uses the two independent oil circuits of set to divide
Do not provide pressure oil to dish type speed governing lock and disc braking lock.
According to a preferred embodiment of the invention: described interlock protection control unit include metering protection device,
Misorientation running protection device, the degree of depth instruction abating protection device, deceleration limiting operation protection device, deceleration
Section overspeed protective device, overspeed protective device, Oil pressure oil temperature protection device, greasy dirt dye protection dress
Put, overwinding safety gears, brake clearance protection device, brake block abrasion protection device, disc spring fail safe dress
Put.
Compared with prior art, the beneficial effects of the present invention is:
1, dish brake used by safety arrestment is opened and brakes employing oil pressure and automatically controlled control by the present invention.
2, dish brake speed regulator is utilized hydraulic oil to control to be applied to the size of speed disk brake force by the present invention,
The size of adoption rate overflow valve Linear Control oil pressure can control the size of Speed Braking braking moment, because of a little
Good speed adjustment features, can reach speed required for operating mode, and thoroughly solving can only the shortcoming of speed governing in short-term.
3, the present invention uses flame proof Hydraulic Station to provide pressure oil for dish dish type speed governing lock and disc braking lock, makes
Damper brake can linearly open or close, it is achieved that remotely controls.
4, the present invention uses flame-proof type control station to realize the electric control to oil hydraulic system, and is provided with operation handle
Complete.
5, present invention achieves the various defencive functions needed for hoisting gear, it is ensured that winch shear runs.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to reality
Execute the required accompanying drawing used in example or description of the prior art to be briefly described, it should be apparent that below,
Accompanying drawing in description is only some embodiments of the present invention, for those of ordinary skill in the art,
On the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1. for the novel mechanical speed governing mine hoist control device mechanical, electrical, liquid integrated of the present invention
Frame diagram.
Fig. 2. for the novel mechanical speed governing mine hoist control device mechanical, electrical, liquid integrated of the present invention
Structural representation.
Fig. 3. for the novel mechanical speed governing mine hoist control device mechanical, electrical, liquid integrated of the present invention
The circuit diagram of middle dish type speed governing lock control unit.
Fig. 4. for the novel mechanical speed governing mine hoist control device mechanical, electrical, liquid integrated of the present invention
The circuit diagram of middle dish type damper brake control unit.
Fig. 5. for the novel mechanical speed governing mine hoist control device mechanical, electrical, liquid integrated of the present invention
The circuit diagram of middle PLC logic control element.
Fig. 6. for the novel mechanical speed governing mine hoist control device mechanical, electrical, liquid integrated of the present invention
Middle Hydraulic Station opens and closes the circuit diagram of control unit.
Detailed description of the invention
Below in conjunction with the accompanying drawings the preferred embodiments of the present invention are described in detail, so that advantages of the present invention
Can be easier to be readily appreciated by one skilled in the art with feature, thus protection scope of the present invention is made more
Explicit defines.
Refering to shown in Fig. 1, Fig. 2 and Fig. 5, a kind of novel mechanical speed governing mine lift that the present invention provides twists
Car control device mechanical, electrical, liquid integrated, to having the mining of dish type speed governing lock 7 and disc braking lock 3
Winch is controlled, including using two independent oil circuits respectively to dish type speed governing lock 7 and disc braking lock 3
The flame-proof type Hydraulic Station F of pressure oil is provided, and controls the flame-proof type master of described flame-proof type Hydraulic Station F work
Control station H；Described flame-proof type master console include valve group 1, disc braking lock control proportional pressure control valve 2,
First hydraulicchange-over valve 4, accumulator the 5, second hydraulicchange-over valve 6, dish type speed governing lock control ratio are overflow
Stream valve 8 and electromagnetic valve 9, described disc braking lock control proportional pressure control valve 2 and dish type speed governing lock control to use
Proportional pressure control valve 8 is all independent to disc braking lock 3 and dish type speed governing lock 7 by valve group 1, electromagnetic valve 9
There is provided pressure oil, described first hydraulicchange-over valve 4 and the second hydraulicchange-over valve 6 respectively with disc braking lock
Control proportional pressure control valve 2 connects with dish type speed governing lock control proportional pressure control valve 8, described accumulator 5
Power is provided for this flame-proof type master console；Described flame-proof type master console is provided with PLC logic control list
Unit A, dish type speed governing lock control unit B being connected with PLC logic control element A, disc braking lock control
Unit C, Hydraulic Station open and close control unit D and interlock protection control unit E；Described dish type speed governing lock controls
Unit B and disc braking lock control unit C are controlled with proportional pressure control valve 8 He by dish type speed governing lock respectively
It is connected with dish type speed governing lock 7 and disc braking lock 3 after disc braking lock control proportional pressure control valve 2, institute
State Hydraulic Station keying control unit D to be connected with flame-proof type master console H.
Refering to shown in Fig. 3, dish type speed governing lock control unit B in the present invention includes speed governing lock handle and tune
Speed lock proportional amplifier 26, described speed governing lock handle by after PLC logic control element with speed governing lock ratio
Amplifier 26 connects, and described speed governing lock proportional amplifier 26 is by dish type speed governing lock control proportional overflow
Valve 8 is connected with dish type speed governing lock 7.Operationally, by adjusting the signal that speed governing lock handle provides, warp
The current signal of speed governing lock proportional amplifier 26 amplifies and controls dish type speed governing lock control proportional pressure control valve 8,
When current signal is given to maximum (about 800mA), the brake force of Hydraulic Adjustable Speed oil cylinder is minimum, dish type
Speed governing lock 7 is opened, and does not the most just have brake force, and during work, operator pulls the displacement of speed governing lock handle,
Its current signal is followed speed governing lock handle metastasis and is changed (i.e. 800mA → 100mA), thus controls
The brake pressure size of dish type speed governing lock (that is to say stepless planetary speed governing lock), it is achieved speed regulates.
Refering to shown in Fig. 4, disc braking lock control unit C in the present invention includes damper brake handle and system
Dynamic lock proportional amplifier 25, described damper brake handle by after PLC logic control element with damper brake ratio
Amplifier 25 connects, and described damper brake proportional amplifier 25 is by disc braking lock control proportional overflow
Valve 2 is connected with disc braking lock 3.Operationally, by adjusting the signal that damper brake handle provides, warp
Damper brake proportional amplifier 25 amplifies current signal, controls disc braking lock control proportional pressure control valve 2,
When current signal is given to minimum (below 100mA), the braking moment that disc braking lock 3 produces is maximum,
Disc braking lock 3 is braked, and hoisting gear is in safety arrestment state (i.e. parking)；And operationally, outward
The electric-control system in portion by PLC logic control element drive solenoid relay valve (1DTJ in Fig. 6,2DTJ,
3DTJ), control electromagnetic valve of explosion isolation (G8, G9, G20 in Fig. 6), open oil circuit, then pull damper brake hands
Handle, the scaling electric current of regulation damper brake proportional amplifier 25, control disc braking lock control ratio
Overflow valve 2, its current signal changes from small to big (i.e. 100mA → 800mA), the braking of disc braking lock 3
Power size will follow current size and linear change, braking moment from large to small, 3 dozens, disc braking lock
Open, release braking, coordinate dish type speed governing lock, winch thus full speed running can be realized.
As preferably, heretofore described flame-proof type Hydraulic Station F use the independent oil circuit of two sets respectively to
Dish type speed governing lock 7 and disc braking lock 3 provide pressure oil；When breaking down if any set of system, can be certainly
Dynamic switching uses another set of system, it is achieved be easy to maintenance in the case of not stopping production.
Described interlock protection control unit E includes metering protection device, misorientation running protection device, the degree of depth
Instruction abating protection device, deceleration limiting operation protection device, braking section overspeed protective device, hypervelocity are protected
Protection unit, Oil pressure oil temperature protection device, greasy dirt contaminate between protection device, overwinding safety gears, lock
Gap protection device, brake block abrasion protection device, disc spring abating protection device.
Concrete, x0.0, x0.1 of being gathered signal entrance PLC by metering protection device carry out logic fortune
Calculate, record actual motion distance.Misorientation runs: by the actual range of metering record, when promoting operation,
Occur that reversely, winch shear is braked.Degree of depth instruction was lost efficacy: lost function when depth indicator loses efficacy
Time, winch is out of service, safety arrestment, and signal inputs from x0.3.Braking section limiting operation, braking section
Overrun, overrun: by x0.2 input detection rate signal, coordinate upper and lower reduce-speed sign x0.11 x0.10,
Aboveground lower 2 meters of restricting signal x1.8 x1.7, when there is overspeed condition, winch is out of service, safety arrestment.
Oil pressure oil temperature greasy dirt: when the too high x1.6 of hydraulic fluid pressure, analysis of hydraulic oil overheat occurs in Hydraulic Station
When x1.5, cleanliness of hydraulic oil spend end x1.4, winch is out of service, safety arrestment.Pulleying: work as winch
When range ability exceedes parking spot 0.5 meter, winch is out of service, safety arrestment, and signal is by x0.12
X0.13 enters PLC logic control., brake clearance: when brake clearance exceedes setting, winch stop fortune
OK, safety arrestment, signal is entered PLC logic control by x1.1.Brake block abrasion: when brake block abrasion exceedes
During setting, winch is out of service, safety arrestment, and signal is entered PLC logic control by x1.2.Disc spring
Lost efficacy: when disk spring is tired, and when losing brake force, winch is out of service, safety arrestment, signal by
X1.3 enters PLC logic control).The start-stop of hydraulic system: under protection system health, input oil pump
1 (x0.19), oil pump 2 (x0.18) signal, through PLC logical process, drive relay K 5, K6 (y0.6,
Y0.7), primer fluid pressure oil pump motor, input oil pump stops signal (x0.12), and hydraulic oil pump motor stops,
Winch is out of service, safety arrestment.The starting and stopping of mair motor: under hydraulic system starts, input promotes fortune
Go (x0.6) or transfer operation (x0.5) signal, through PLC logical process, driving relay K 3 (y0.2)
Or K4 (y0.4), starting mair motor, input mair motor stops signal (x0.7), and mair motor stops, strand
Car is out of service, safety arrestment.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention are not by above-mentioned
The restriction of embodiment, the change made under other any spirit without departing from the present invention and principle,
Modify, substitute, combine, simplify, all should be the substitute mode of equivalence, be included in the protection of the present invention
Within the scope of.
Claims (5)
1. novel mechanical speed governing mine hoist control device mechanical, electrical, liquid integrated, to having dish
The mine winch of shape speed governing lock (7) and disc braking lock (3) is controlled, it is characterised in that:
Including using two independent oil circuits respectively to dish type speed governing lock (7) and disc braking lock (3)
The flame-proof type Hydraulic Station (F) of pressure oil is provided, and controls what described flame-proof type Hydraulic Station (F) worked
Flame-proof type master console (H)；
Described flame-proof type master console include valve group (1), disc braking lock control proportional pressure control valve (2),
First hydraulicchange-over valve (4), accumulator (5), the second hydraulicchange-over valve (6), dish type speed governing lock control
System uses proportional pressure control valve (8) and electromagnetic valve (9), described disc braking lock control proportional pressure control valve (2)
With dish type speed governing lock control with proportional pressure control valve (8) all by valve group (1), electromagnetic valve (9) to dish
Shape damper brake (3) and the independent offer pressure oil of dish type speed governing lock (7), described first surges commutation
Valve (4) and the second hydraulicchange-over valve (6) respectively with disc braking lock control with proportional pressure control valve (2)
Connecting with dish type speed governing lock control proportional pressure control valve (8), described accumulator (5) is this flame-proof type
Master console provides power；
Described flame-proof type master console is provided with PLC logic control element (A), with PLC logic control
Dish type speed governing lock control unit (B) that unit (A) connects, disc braking lock control unit (C), liquid
Pressure station opens and closes control unit (D) and interlock protection control unit (E)；Described dish type speed governing lock controls single
Unit (B) and disc braking lock control unit (C) are respectively by dish type speed governing lock control proportional overflow
Valve (8) and disc braking lock control with proportional pressure control valve (2) afterwards with dish type speed governing lock (7) and dish type
Damper brake (3) connects, and described Hydraulic Station opens and closes control unit (D) and flame-proof type master console (H)
Connect.
Novel mechanical speed governing mine hoist the most according to claim 1 is mechanical, electrical, liquid one
Change and control device, it is characterised in that:
Described dish type speed governing lock control unit (B) includes speed governing lock handle and speed governing lock proportional amplifier
(26) with speed governing lock proportional amplifier (26) after, described speed governing lock handle passes through PLC logic control element
Connecting, described speed governing lock proportional amplifier (26) passes through dish type speed governing lock control proportional pressure control valve (8)
It is connected with dish type speed governing lock (7).
Novel mechanical speed governing mine hoist the most according to claim 1 is mechanical, electrical, liquid one
Change and control device, it is characterised in that:
Described disc braking lock control unit (C) includes damper brake handle and damper brake proportional amplifier
(25) with damper brake proportional amplifier (25) after, described damper brake handle passes through PLC logic control element
Connect, described damper brake proportional amplifier (25) by disc braking lock controls proportional pressure control valve (2) and
Disc braking lock (3) connects.
4. according to the novel mechanical speed governing mine hoist machine described in claims 1 to 3 any one,
Control device electric, liquid integrated, it is characterised in that: described flame-proof type Hydraulic Station (F) uses two sets independent
Oil circuit provide pressure oil to dish type speed governing lock (7) and disc braking lock (3) respectively.
5. according to the novel mechanical speed governing mine hoist machine described in claims 1 to 3 any one,
Control device electric, liquid integrated, it is characterised in that: described interlock protection control unit (E) includes metering
Protection device, misorientation running protection device, degree of depth instruction abating protection device, deceleration limiting operation are protected
Protection unit, braking section overspeed protective device, overspeed protective device, Oil pressure oil temperature protection device,
Greasy dirt dye protection device, overwinding safety gears, brake clearance protection device, brake block abrasion protection device,
Disc spring abating protection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410452256.6A CN104291230B (en) | 2014-09-06 | 2014-09-06 | Novel mechanical speed governing mine hoist control device mechanical, electrical, liquid integrated |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410452256.6A CN104291230B (en) | 2014-09-06 | 2014-09-06 | Novel mechanical speed governing mine hoist control device mechanical, electrical, liquid integrated |
Publications (2)
| Publication Number | Publication Date |
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| CN104291230A CN104291230A (en) | 2015-01-21 |
| CN104291230B true CN104291230B (en) | 2016-08-24 |
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| CN201410452256.6A Active CN104291230B (en) | 2014-09-06 | 2014-09-06 | Novel mechanical speed governing mine hoist control device mechanical, electrical, liquid integrated |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106744146B (en) * | 2016-12-29 | 2018-10-16 | 中国矿业大学 | A kind of elevator transmission device with anti-falling function |
| CN110759272B (en) * | 2019-10-15 | 2021-04-16 | 徐州立方机电设备制造有限公司 | Hydraulic locking control method for vertical shaft hybrid lifting system |
| CN111170190B (en) * | 2020-04-11 | 2020-09-01 | 山东科瑞机械制造有限公司 | Drilling rig winch disc brake integrated control method and device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5935833B2 (en) * | 1976-06-02 | 1984-08-30 | 川崎重工業株式会社 | Follow-up control device for two hydraulic winches |
| CN2918367Y (en) * | 2006-03-31 | 2007-07-04 | 陈晓豹 | Signal and lifting direction locking device of explosion-proof hydraulic winch |
| CN201419954Y (en) * | 2009-04-04 | 2010-03-10 | 山东世纪矿山机电有限公司 | Host machine of mine endless rope winch integrated protection device |
| CN202661835U (en) * | 2012-07-19 | 2013-01-09 | 湖南正忠信息技术有限公司 | Explosive-proof intrinsic-safety type programmable logic controller (PLC) control box for mines |
| CN103112792B (en) * | 2013-03-01 | 2015-03-25 | 中国海洋石油总公司 | Integrated control valve of logging winch and logging winch system |
| CN103771279B (en) * | 2014-01-22 | 2015-12-30 | 安徽理工大学 | Hydraulic power unit and SQ-1200 endless rope series tractor collection control integration unit control method |
| CN204125098U (en) * | 2014-09-06 | 2015-01-28 | 湖南创安防爆电器有限公司 | Mechanical, electrical, the liquid integrated control setup of novel mechanical speed governing mine hoist |
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Denomination of invention: A new type of mechanical speed regulating mine hoist, electric and hydraulic integrated control device Effective date of registration: 20210104 Granted publication date: 20160824 Pledgee: China Construction Bank Co.,Ltd. Lianyuan sub branch Pledgor: HUNAN CHUANGAN FLAMEPROOF ELECTRICAPPLIANCES Co.,Ltd. Registration number: Y2020430000059 |
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Date of cancellation: 20211202 Granted publication date: 20160824 Pledgee: China Construction Bank Co.,Ltd. Lianyuan sub branch Pledgor: HUNAN CHUANGAN FLAMEPROOF ELECTRICAPPLIANCES Co.,Ltd. Registration number: Y2020430000059 |
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Denomination of invention: New type of mechanical speed regulation mining hoist, electric and hydraulic integrated control device Effective date of registration: 20231212 Granted publication date: 20160824 Pledgee: China Construction Bank Co.,Ltd. Lianyuan sub branch Pledgor: HUNAN CHUANGAN FLAMEPROOF ELECTRICAPPLIANCES Co.,Ltd. Registration number: Y2023980071030 |