CN108919062A - Test device for coalcutter control cable - Google Patents
Test device for coalcutter control cable Download PDFInfo
- Publication number
- CN108919062A CN108919062A CN201811110415.9A CN201811110415A CN108919062A CN 108919062 A CN108919062 A CN 108919062A CN 201811110415 A CN201811110415 A CN 201811110415A CN 108919062 A CN108919062 A CN 108919062A
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- control cable
- socket
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- light emitting
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- 238000012360 testing method Methods 0.000 title claims abstract description 44
- 238000001514 detection method Methods 0.000 claims abstract description 42
- 230000005611 electricity Effects 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 9
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 230000003760 hair shine Effects 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The present invention provides a kind of test device for coalcutter control cable, belongs to control cable detection field, solves the problems, such as to test when coalcutter controls cable that there are test speeds at present slowly, low efficiency, test process are cumbersome and easy error.Cable detection circuit, 7 cores control cable detection circuit, 12 cores are controlled by setting power circuit, charging circuit, 3 cores and control cable detection circuit, 19 cores control cable detection circuit and power indicator circuit, and a kind of device that can be tested 3 cores control cable, 7 cores control cable, 12 cores simultaneously and control cable and 19 cores control cable is provided.Control cable to be measured need to be only inserted into corresponding socket when testing through the invention, it is simple to operate, test speed and efficiency can not only be improved, and test process is not easy to make mistakes.With at low cost, easy to use, can validity test each control cable and its core wire on-off, can improve the test speed and efficiency for controlling cable, the advantages that test process is not easy to make mistakes.
Description
Technical field
The present invention relates to coalcutter control cable detection technical fields more particularly to a kind of for coalcutter control cable
Test device.
Background technique
Outside control cable is the important component of Electric Control System of Coal Cutter, they are mainly responsible for coalcutter mainframe electricity
The connection of the equipment such as case and external sensor, solenoid valve, instruction device, diagnostor is controlled, every coalcutter has control outside many items
Cable, as Ai Kefu SL750 coalcutter has 50 or so control cables.Coalcutter control cable length from 1.2m to 7.2m not
Deng being divided into 3 core wires, 7 core wires, 12 core wires and 19 core wires etc..Since control cable is exposed to outside coalcutter, easily pounded by coal cinder
Disconnected or external force is broken, to cause coalcutter electric fault, therefore controlling cable is highest electrical group of coalcutter failure rate
At component.Therefore, in the use process of coalcutter, it is often necessary to test control cable, so that it is determined which is controlled
Cable breaks down.
It is each core wire using multimeter to control cable at present when the control cable to coalcutter is tested
It carries out compared with line.The shortcomings that this detection mode is that test speed is slow, and testing efficiency is extremely low；If the core wire for controlling cable is more
(such as 19 core wires), or when high-volume checks and accepts control cable, checkout procedure is extremely cumbersome and easy error.
Summary of the invention
Present invention aim to address the mode of current test coalcutter control cable there are test speeds slow, testing efficiencies
The technical issues of low, test process is cumbersome and easy error, provides a kind of test device for coalcutter control cable.
In order to solve the above technical problems, the technical solution adopted by the present invention is that：
A kind of test device for coalcutter control cable comprising power circuit, charging circuit, 3 cores control cable
Detection circuit, 7 cores control cable detection circuit, 12 cores control cable detection circuit, 19 cores control cable detection circuit and power supply
Indicator light circuit；The power circuit includes battery U and power switch SW；Charging circuit includes 2 core charging socket X9, resistance
R42 and light emitting diode L42；3 cores control cable detection circuit and include 3 core socket X1,3 core socket X2, resistance R1-R3, shine
Diode L1-L3；It includes 7 core socket X3,7 core socket X4, resistance R4-R10 and light emitting diode that 7 cores, which control cable detection circuit,
L4-L10；It includes 12 core socket X5,12 core socket X6, resistance R11-R22 and light emitting diode that 12 cores, which control cable detection circuit,
L11-L22；It includes 19 core socket X7,19 core socket X8, resistance R23-R41 and light emitting diode that 19 cores, which control cable detection circuit,
L23-L41；Power indicator circuit includes resistance R43 and light emitting diode L43；Wherein：
Two sockets of the 2 core charging socket X9 are connect with the anode and cathode of battery U respectively, and the one of resistance R42
It holds and is connect with the anode of battery U, the other end of resistance R42 is connect with the anode of light emitting diode L42, light emitting diode L42
Cathode connect with the cathode of battery U, one end of power switch SW is connect with the anode of battery U, power switch SW's
The other end is connect with one end of resistance R43, and the other end of resistance R43 is connect with the anode of light emitting diode L43, light emitting diode
The cathode of L43 is connect with the cathode of battery U；One end of resistance R1-R3 is connect with the other end of power switch SW, resistance
The other end of R1-R3 is connect with a socket of 3 core socket X1 respectively；Light emitting diode L1-L3 anode respectively with 3 core sockets
A socket of X2 connects, and the cathode of light emitting diode L1-L3 is connect with the cathode of battery U；One end of resistance R4-R10
It is connect with the other end of power switch SW, the other end of resistance R4-R10 is connect with a socket of 7 core socket X3 respectively；Hair
Optical diode L4-L10 anode connect respectively with a socket of 7 core socket X4, the cathode of light emitting diode L4-L10 with
The cathode of battery U connects；One end of resistance R11-R22 is connect with the other end of power switch SW, and resistance R11-R22's is another
One end is connect with a socket of 12 core socket X5 respectively；The anode of light emitting diode L11-L22 is respectively with 12 core socket X6's
One socket connection, the cathode of light emitting diode L11-L22 are connect with the cathode of battery U；One end of resistance R23-R41 is equal
It is connect with the other end of power switch SW, the other end of resistance R23-R41 is connect with a socket of 19 core socket X7 respectively；Hair
The anode of optical diode L23-L41 is connect with a socket of 19 core socket X8 respectively, and the cathode of light emitting diode L23-L41 is equal
It is connect with the cathode of battery U.
Optionally, the battery U is 3.3V chargeable storage, and the battery capacity 3000mAh of the battery U.
The beneficial effects of the invention are as follows：
Cable detection circuit is controlled by setting power circuit, charging circuit, 3 cores, 7 cores control cable detection circuit, 12
Core controls cable detection circuit, 19 cores control cable detection circuit and power indicator circuit, and providing one kind can be simultaneously to 3 core
The device that control cable, 7 cores control cable, 12 cores control cable and 19 cores control cable are tested, is being surveyed through the invention
Control cable to be measured need to be only inserted into corresponding socket when examination, it is simple to operate, can not only improve test speed and
Efficiency, and test process do not allow it is error-prone.Therefore, compared with the background art, the present invention has at low cost, easy to use, can
Validity test each controls the break-make situation of cable and its core wire, can be improved the test speed and efficiency of control cable, surveys
Examination process does not allow the advantages that error-prone.
Detailed description of the invention
Fig. 1 is circuit composition schematic diagram of the invention.
Fig. 2 is operation panel schematic diagram of the invention.
Fig. 3 is the main view of Fig. 2.
Specific embodiment
Below in conjunction with drawings and examples, the present invention is described in further detail.
As shown in Figure 1 to Figure 3, the test device for coalcutter control cable in the present embodiment comprising power supply electricity
Road, charging circuit, 3 cores control cable detection circuit, 7 cores control cable detection circuit, 12 cores control cable detection circuit, 19 cores
Control cable detection circuit and power indicator circuit；The power circuit includes battery U and power switch SW；Charging circuit
Including 2 core charging socket X9, resistance R42 and light emitting diode L42；It includes 3 core socket X1,3 cores that 3 cores, which control cable detection circuit,
Socket X2, resistance R1-R3, light emitting diode L1-L3；7 cores control cable detection circuit include 7 core socket X3,7 core socket X4,
Resistance R4-R10 and light emitting diode L4-L10；It includes 12 core socket X5,12 core socket X6, electricity that 12 cores, which control cable detection circuit,
Hinder R11-R22 and light emitting diode L11-L22；It includes 19 core socket X7,19 core socket X8, electricity that 19 cores, which control cable detection circuit,
Hinder R23-R41 and light emitting diode L23-L41；Power indicator circuit includes resistance R43 and light emitting diode L43；Wherein：Institute
Two sockets for stating 2 core charging socket X9 are connect with the anode and cathode of battery U respectively, one end of resistance R42 and battery U
Anode connection, the other end of resistance R42 connect with the positive of light emitting diode L42, the cathode of light emitting diode L42 and electric power storage
The cathode of pond U connects, and one end of power switch SW is connect with the anode of battery U, the other end and resistance of power switch SW
One end of R43 connects, and the other end of resistance R43 is connect with the anode of light emitting diode L43, the cathode of light emitting diode L43 and
The cathode of battery U connects；One end of resistance R1-R3 is connect with the other end of power switch SW, the other end of resistance R1-R3
It is connect respectively with a socket of 3 core socket X1；A positive socket with 3 core socket X2 respectively of light emitting diode L1-L3
Connection, the cathode of light emitting diode L1-L3 are connect with the cathode of battery U；One end of resistance R4-R10 is and power switch
The other end of SW connects, and the other end of resistance R4-R10 is connect with a socket of 7 core socket X3 respectively；Light emitting diode L4-
The anode of L10 is connect with a socket of 7 core socket X4 respectively, and the cathode of light emitting diode L4-L10 is negative with battery U
Pole connection；One end of resistance R11-R22 is connect with the other end of power switch SW, the other end of resistance R11-R22 respectively with
A socket of 12 core socket X5 connects；The anode of light emitting diode L11-L22 connects with a socket of 12 core socket X6 respectively
It connects, the cathode of light emitting diode L11-L22 is connect with the cathode of battery U；One end of resistance R23-R41 is and power switch
The other end of SW connects, and the other end of resistance R23-R41 is connect with a socket of 19 core socket X7 respectively；Light emitting diode
The anode of L23-L41 is connect with a socket of 19 core socket X8 respectively, and the cathode of light emitting diode L23-L41 is and battery
The cathode of U connects.
In this embodiment, the battery U is 3.3V chargeable storage, and the battery capacity of the battery U
3000mAh。
In this embodiment, charging circuit is used to charge for battery U, and 2 core charging socket X9 are used for suitable with external power supply
It charges after orchestration connection for battery U, resistance R42 is used to limit the electric current in the circuit light emitting diode L42；Light emitting diode
L42 is charging indicator light, whether is in charged state for display circuit.Resistance R43 is for limiting the place light emitting diode L43
The electric current of circuit；Light emitting diode L43 is power supply indicator, for showing whether power switch SW is closed.Resistance R1-R3 is limited
Leakage resistance, for reduce light emitting diode L1-L3 electric current in circuit；Light emitting diode L1-L3 is for showing the control of 3 cores
The break-make situation of each core wire in cable.3 core socket X1 and 3 core socket X2 are used to connect the two of 3 cores control cable in test
Each core wire hair of 3 cores control cable ends when testing 3 cores control cable, is not entered and left 3 core socket X1 and 3 core sockets by end
X2.Resistance R4-R10 is current-limiting resistance, for reduce light emitting diode L4-L10 electric current in circuit；Light emitting diode
L4-L10 is used to show the break-make situation of each core wire in 7 cores control cable.7 core socket X3 and 7 core socket X4 are for testing
When connect 7 cores control cable both ends, that is, test 7 cores control cable when, by 7 cores control cable ends each core wire hair do not go out
Enter 7 core socket X3 and 7 core socket X4.Resistance R11-R22 is current-limiting resistance, for electricity where reducing light emitting diode L11-L22
Electric current in road；Light emitting diode L11-L22 is used to show the break-make situation of each core wire in 12 cores control cable.12 core sockets
X5 and 12 core socket X6 is used to connect the both ends of 12 cores control cable in test, that is, when testing 12 cores control cable, by 12 cores
Each core wire hair of control cable ends does not enter and leave 12 core socket X5 and 12 core socket X6.Resistance R23-R41 is current-limiting resistance, is used
In reduce light emitting diode L23-L41 electric current in circuit；Light emitting diode L23-L41 is for showing that 19 cores control cable
In each core wire break-make situation.19 core socket X7 and 19 core socket X8 are used to connect the two of 19 cores control cable in test
Each core wire hair of 19 cores control cable ends when testing 19 cores control cable, is not entered and left 19 core socket X7 and 19 cores by end
Socket X8.
In the use of the present invention, SW is first turned on the power switch when needing to detect the control cable of coalcutter, if test
Be 3 cores control cable, then respectively by 3 cores control cable both ends be respectively inserted on 3 core socket X1 and 3 core socket X2.When 3 cores
When the both ends of control cable are respectively inserted on 3 core socket X1 and 3 core socket X2, battery U passes through resistance R1-R3, control cable
1-3 core wire, light emitting diode L1-L3 forming circuit, judge each core by observing the luminous situation of light emitting diode L1-L3
The break-make situation of line.Specifically, if light emitting diode L1-L3 shines, illustrate that 3 core control cable is normal；If hair
Any of optical diode L1-L3 does not shine, then can determine the socket insertion that non-luminous light emitting diode is connected
Core wire breaks down.For example, if light emitting diode L2 does not shine, and the core for the socket insertion being connect with light emitting diode L2
Line is core wire 2, then can determine that the core wire 2 of 3 core control cable breaks down.
If test is 7 cores control cable, the both ends of 7 cores control cable are respectively inserted in 7 core socket X3 and 7 respectively
On core socket X4.When the both ends of 7 cores control cable are respectively inserted on 7 core socket X3 and 7 core socket X4, battery U passes through electricity
R4-R10, control cable 1-7 core wire, light emitting diode L4-L10 forming circuit are hindered, by observing light emitting diode L4-L10
Luminous situation judge the break-make situation of each core wire.Specifically, if light emitting diode L4-L10 shine, illustrate this 7
It is normal that core controls cable；If any of light emitting diode L4-L10 does not shine, non-luminous luminous two can be determined
The core wire for the socket insertion that pole pipe is connected breaks down.
If test is 12 cores control cable, the both ends of 12 cores control cable are respectively inserted in 12 core socket X5 respectively
On 12 core socket X6.When the both ends of 12 cores control cable are respectively inserted on 12 core socket X5 and 12 core socket X6, battery U
By resistance R11-R22, control cable 1-12 core wire, light emitting diode L11-L22 forming circuit, by observing light-emitting diodes
The luminous situation of pipe L11-L22 judges the break-make situation of each core wire.Specifically, if light emitting diode L11-L22 shines,
Then illustrate that 12 core control cable is normal；If any of light emitting diode L11-L22 does not shine, it can determine and not send out
The core wire for the socket insertion that the light emitting diode of light is connected breaks down.
If test is 19 cores control cable, the both ends of 19 cores control cable are respectively inserted in 19 core socket X7 respectively
On 19 core socket X8.When the both ends of 19 cores control cable are respectively inserted on 19 core socket X7 and 19 core socket X8, battery U
By resistance R22-R41, control cable 1-19 core wire, light emitting diode L22-L41 forming circuit, by observing light-emitting diodes
The luminous situation of pipe L22-L41 judges the break-make situation of each core wire.Specifically, if light emitting diode L22-L41 shines,
Then illustrate that 19 core control cable is normal；If any of light emitting diode L22-L41 does not shine, it can determine and not send out
The core wire for the socket insertion that the light emitting diode of light is connected breaks down.
It should be noted that the embodiment only includes with the test device provided by the present invention for coalcutter control cable
3 cores control cable detection circuit, 7 cores control cable detection circuit, 12 cores control cable detection circuit and the control cable inspection of 19 cores
It is illustrated for slowdown monitoring circuit.However, including other several core wires when needing control cable to be tested in the specific implementation
When, composition and 3 cores control cable detection circuit, 7 cores control cable detection circuit, 12 cores of test philosophy and test circuit control
Cable detection circuit and 19 cores control cable detection circuit are identical, this is no longer described in detail in the present embodiment.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, however the present invention is not limited thereto.For those skilled in the art, essence of the invention is not being departed from
In the case where mind and essence, various changes and modifications can be made therein, these variations and modifications are also considered as protection scope of the present invention.
Claims (2)
1. a kind of test device for coalcutter control cable, which is characterized in that including power circuit, charging circuit, 3 core controls
Cable detection circuit processed, 7 cores control cable detection circuit, 12 cores control cable detection circuit, 19 cores control cable detection circuit
And power indicator circuit；The power circuit includes battery U and power switch SW；Charging circuit includes 2 core charging sockets
X9, resistance R42 and light emitting diode L42；It includes 3 core socket X1,3 core socket X2, resistance R1- that 3 cores, which control cable detection circuit,
R3, light emitting diode L1-L3；It includes 7 core socket X3,7 core socket X4, resistance R4-R10 and hair that 7 cores, which control cable detection circuit,
Optical diode L4-L10；It includes 12 core socket X5,12 core socket X6, resistance R11-R22 and hair that 12 cores, which control cable detection circuit,
Optical diode L11-L22；It includes 19 core socket X7,19 core socket X8, resistance R23-R41 and hair that 19 cores, which control cable detection circuit,
Optical diode L23-L41；Power indicator circuit includes resistance R43 and light emitting diode L43；Wherein：
Two sockets of the 2 core charging socket X9 respectively with battery U anode and cathode connect, one end of resistance R42 and
The anode connection of battery U, the other end of resistance R42 are connect with the anode of light emitting diode L42, and light emitting diode L42's is negative
Pole is connect with the cathode of battery U, and one end of power switch SW is connect with the anode of battery U, and power switch SW's is another
End is connect with one end of resistance R43, and the other end of resistance R43 is connect with the anode of light emitting diode L43, light emitting diode L43
Cathode connect with the cathode of battery U；One end of resistance R1-R3 is connect with the other end of power switch SW, resistance R1-R3
The other end connect respectively with a socket of 3 core socket X1；The anode of light emitting diode L1-L3 is respectively with 3 core socket X2's
One socket connection, the cathode of light emitting diode L1-L3 are connect with the cathode of battery U；One end of resistance R4-R10 with
The other end of power switch SW connects, and the other end of resistance R4-R10 is connect with a socket of 7 core socket X3 respectively；Luminous two
The anode of pole pipe L4-L10 is connect with a socket of 7 core socket X4 respectively, and the cathode of light emitting diode L4-L10 is and electric power storage
The cathode of pond U connects；One end of resistance R11-R22 is connect with the other end of power switch SW, the other end of resistance R11-R22
It is connect respectively with a socket of 12 core socket X5；Positive one with 12 core socket X6 respectively of light emitting diode L11-L22
Socket connection, the cathode of light emitting diode L11-L22 are connect with the cathode of battery U；One end of resistance R23-R41 with electricity
The other end of source switch SW connects, and the other end of resistance R23-R41 is connect with a socket of 19 core socket X7 respectively；Luminous two
Pole pipe L23-L41 anode connect respectively with a socket of 19 core socket X8, the cathode of light emitting diode L23-L41 with storage
The cathode of battery U connects.
2. the test device according to claim 1 for coalcutter control cable, which is characterized in that the battery U
For 3.3V chargeable storage, and the battery capacity 3000mAh of the battery U.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811110415.9A CN108919062A (en) | 2018-09-21 | 2018-09-21 | Test device for coalcutter control cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811110415.9A CN108919062A (en) | 2018-09-21 | 2018-09-21 | Test device for coalcutter control cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108919062A true CN108919062A (en) | 2018-11-30 |
Family
ID=64409490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811110415.9A Pending CN108919062A (en) | 2018-09-21 | 2018-09-21 | Test device for coalcutter control cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108919062A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112485722A (en) * | 2020-11-24 | 2021-03-12 | 济南吉美乐电源技术有限公司 | Communication cable on-off detection device based on STM32 singlechip |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB707741A (en) * | 1951-01-12 | 1954-04-21 | Alfred Howard Slaney | Improvements relating to the testing of electrical apparatus |
| CN2035097U (en) * | 1988-05-23 | 1989-03-29 | 哈尔滨工业大学 | Cable short-circuit position tester |
| CN202033443U (en) * | 2011-04-15 | 2011-11-09 | 宁夏巨能机器人系统有限公司 | Multi-core finished product cable correcting device |
| CN203858316U (en) * | 2014-04-29 | 2014-10-01 | 北京强度环境研究所 | Portable instrument for checking completed circuit, open circuit and short circuit condition of 5-core cable |
| CN108107323A (en) * | 2017-12-20 | 2018-06-01 | 中车石家庄车辆有限公司 | Threephase cable axis open circuit fault detector |
-
2018
- 2018-09-21 CN CN201811110415.9A patent/CN108919062A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB707741A (en) * | 1951-01-12 | 1954-04-21 | Alfred Howard Slaney | Improvements relating to the testing of electrical apparatus |
| CN2035097U (en) * | 1988-05-23 | 1989-03-29 | 哈尔滨工业大学 | Cable short-circuit position tester |
| CN202033443U (en) * | 2011-04-15 | 2011-11-09 | 宁夏巨能机器人系统有限公司 | Multi-core finished product cable correcting device |
| CN203858316U (en) * | 2014-04-29 | 2014-10-01 | 北京强度环境研究所 | Portable instrument for checking completed circuit, open circuit and short circuit condition of 5-core cable |
| CN108107323A (en) * | 2017-12-20 | 2018-06-01 | 中车石家庄车辆有限公司 | Threephase cable axis open circuit fault detector |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112485722A (en) * | 2020-11-24 | 2021-03-12 | 济南吉美乐电源技术有限公司 | Communication cable on-off detection device based on STM32 singlechip |
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Effective date of registration: 20210224 Address after: 036000 Pingshuo administrative and living area, Shuocheng District, Shuozhou City, Shanxi Province Applicant after: China Coal Pingshuo Development Group Co.,Ltd. Address before: 036000 Pingshuo living area, Shuocheng District, Shuozhou City, Shanxi Province Applicant before: PINGSHUO INDUSTRIAL GROUP Co.,Ltd. |
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