CN105151076B - The method that railway station track car team brake apparatus brakes car team - Google Patents
The method that railway station track car team brake apparatus brakes car team Download PDFInfo
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- CN105151076B CN105151076B CN201510590188.4A CN201510590188A CN105151076B CN 105151076 B CN105151076 B CN 105151076B CN 201510590188 A CN201510590188 A CN 201510590188A CN 105151076 B CN105151076 B CN 105151076B
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Abstract
The method that railway station track car team brake apparatus brakes car team, the car team that needs are braked, brake force is applied with rear to axis wheel vertical line, the effective range for either entering brake apparatus in wheel starts to apply small brake force, brake force increases after wheel integrally enters the effective range of brake apparatus, and brake force increases after axis wheel leaves the effective range of brake apparatus with front.When brake apparatus applies brake force to axis wheel vertical line with rear, brake force can be formed along wheel by brake force point tangential direction：Downward power and resistance backward, the downward power of tangential direction translates into the power that wheel compresses downwards stock rail, the power for lifting wheel generated by brake force is not only eliminated compared with putting mode of braking before existing brake apparatus is to wheel in this way, and increase the lower pressure that wheel pushes stock rail, the corresponding frictional resistance for just increasing wheel and stock rail, improves the stopping power in braking equipment unit length.
Description
Technical field
The present invention relates to railway station tracks to the Speed Braking technical field of car team, is braked more particularly to railway station track car team
The method that device brakes car team.
Background technology
The anti-slip equipment of the speed governing of China railways Station line management mainly has at present：Retarder, deceleration top, boundary member, these set
The standby execution equipment as hump rolling speed automatic control system, the control instruction by receiving control system complete braking
Alleviation acts, and cooperation control system completes the automation control to hump rolling speed.Therefore the anti-slip device intelligence of these speed governing
Change degree is low, no monitoring running state function, and equipment can only rely on the control instruction of control system to act, and nothing automatically controls work(
Energy.
Clamp gravity type retarder operation principle：The weight for being braked vehicle is converted into pairs of wheel by lever mechanism
Lateral pressure, generate moment of friction vehicle is braked.
Disadvantage：Complicated, the professional railway roadbed of needs；Since its maximum braking force is set by lever ratio, Bu Neng
Adjust automatically when operation, thus when lever ratio is big light car wheel is easily squeezed out, off-line problem occurs, is easily pressed from both sides again after alleviation
Stop；Lever ratio hour is low to loaded vehicle brake force, is difficult to control, and easily causes overspeed of vehicle outlet and collides.So lever ratio
It is difficult to take into account weight vehicle；When repeating to brake, stock rail can be lifted loaded vehicle, is lost gravity type effect, is reduced simultaneously
To the brake force of vehicle；Brake-caliper opening value cannot adjust at any time, so small to thin wheel vehicle brake force.
Single-rail inner bearing type boundary member and single-rail hydraulic pressure inner bearing type classified brake speed reducer operation principle：Two-system when braking
The action of dynamic rail braking surface compresses brake plate using vehicle energy, generates pressure and react to vehicle to being more than on the inside of wheel away from position
Facade achievees the purpose that braking deceleration in wheel.
Disadvantage：Brake force is small in unit length, and maximum braking force is preset by spring force or Hydraulic Relief Valve,
To take into account weight vehicle, general maximum braking force with will not light car jump the dynamics of wheel and set, although single-rail hydraulic pressure inner bearing type is classified
Brake retarder is singly at most accomplished under the conditions of limited cost and structure space by multistage overflow valve adjusting device brake force
3-4 grades adjustable.
Deceleration top operation principle：It is filled with a certain number of fluid and inert gas inside housings（Nitrogen）, by internal speed
Bottom valve setting speed, brakes over-speed vehicles, otherwise not to carrying out vehicle applied force.
Disadvantage：Brake force is low, per station track need ten so that it is hundreds of use together, high failure rate, maintenance capacity is very big, usability
Valence is than low.
In summary their common disadvantages of several Speed Braking equipment are that brake force is small in unit length, and it is main former to study carefully it
Cause is to use wheel once the brake force pre-set into brake to wheel application, and in the brake force operational process
It is unable to adjust automatically, forms the braking method of point stress before wheel.Retarder and boundary member to car team braking process and wheel by
Power is analyzed as shown in Figure 1, for wheel not in contact with to braking rail, the main stress of wheel is inertia thrust F, gravity G, base in position a
This rail only consumes the kinetic energy of vehicle to the frictional force f of wheel by the frictional resistance of wheel tread and rail；The vehicle when positions b in Fig. 1
Wheel first half enters braking rail, and braking rail is applied to the normal pressure F of wheel facadeJustWill produce using wheel center is that axis edge rubs
The upward power F of tangential direction of point1 justWith frictional force F2 just；In Fig. 1 when the positions c wheel completely into brake plate, FJustIn axletree
Heart vertical line generates power F upward in the tangential direction of friction point with front1 justAnd frictional force F2 justAnd axis wheel vertical line with
Rear power F downward in the tangential direction of friction point4 justAnd frictional force F3 just；Work as F for the positions b in Fig. 1JustWhen increase, vehicle
Wheel is by upward frictional force F1 justIncrease simultaneously, when it increases to certain value, upward component will be greater than vehicle body gravity,
Vehicle body will leave basic rail level, be commonly called as jumping wheel；In Fig. 1 when the positions c, it is considered that resistance of the wheel suffered by forward and backward half portion
Reach balance, does not jump wheel in principle, but actually due to friction chatter, the braking rail of the movement of the snake-like swing of car team and braking rail
In the deformation of bell mouth shape, braking surface after axis can be generated leave wheel and be equivalent to only wheel first half stress or axletree
Braking surface slightly leaves wheel afterwards, makes the power F that wheel first half is upward1 justDownward power F latter half of more than wheel4 just, it is equivalent to axis
Braking surface leaves wheel and causes to jump wheel phenomenon afterwards.So boundary member equipment is to avoid jumping taking turns, maximum braking force is with empty wagons axis weight
Be limited setting, its stock rail to float of gravity clamp reducer increases the adaptation energy to weight vehicle, but because its brake force is leaned on
Lever ratio is set, smaller to take into account its general lever ratio of weight vehicle.Therefore the method for promoting braking effect only adds
More brakes of long equipment or installation.Put braking method before this passive type simultaneously, the trend with lifting wheel when braking subtracts
Light wheel pushes the pressure of stock rail, also just reduces the frictional resistance of wheel and stock rail, makes kinetic energy of the equipment to car team
Consumption mainly from the frictional force of brake plate and wheel, just reduces the stopping power in braking equipment unit length.In addition this
It is the wheel friction with steel material to same steel material when a little equipment brakings, so brake oil is big, friction coefficient is low,
Brake force is small.
Invention content
For the above situation, to overcome the defect of the prior art, the present invention provides a kind of brakings of railway station track car team to fill
Set the method braked to car team, it is therefore intended that solve brake force in existing railway station track car team brake apparatus unit length it is small,
Light car is jumped the problem of wheel when brake force is big, while proposing new design direction for brake apparatus miniaturization, intelligent development.
Its method is：The method that railway station track car team brake apparatus brakes car team, brake apparatus is to moving and having movement
The wheel of trend applies brake force, which is characterized in that brake apparatus applies wheel movement trend direction axle center vertical line with rear
Braking forces thereto, or synthetical restraint power, the system for making wheel movement trend direction axle center vertical line be subject to rear are applied to wheel
Power is more than the brake force that axis wheel vertical line is subject to front.
The braking method, installation position detection unit, control unit, actuating mechanism, power supply unit and communication bus；
The detection unit connects control unit for detecting wheel position and speed；
The control unit is for obtaining wheel position and velocity information, and connecting moves mechanism, according to wheel position
Judge with velocity information and exports control instruction to actuating mechanism；
The actuating mechanism includes power source and brake plate, and actuating mechanism carries out action pair according to obtained control instruction
Wheel applies corresponding brake force；
The power supply unit is powered detection unit, control unit, actuating mechanism, and the power supply unit is equipped with
Redundancy stand-by power supply unit；
The communication bus is for the communication between more table brakes and control system.
The brake plate length is to intersect the half of wheel diameter length with wheel facade no more than limit for height value inside brake plate,
When the outlet of the vertical line of axis wheel alignment brake plate, which is that wheel is latter half of, brakes range in brake plate, control unit control is dynamic
Make mechanism and brake force F is applied to wheelSystem。
The brake force F systems are to be controlled automatically by brake apparatus according to need to brake after car team kinetic energy and braking target value calculate
System, the upper limit be subject to will not wheel lock up and be more than brake apparatus maximum brake energy height, when unknown car team kinetic energy with not
It causes subject to light car wheel lock up.
The brake plate length is to intersect wheel diameter length with wheel facade no more than limit for height value inside brake plate, works as wheel
Start to apply brake force F when into brake plate arrival end1, apply brake force F when wheel fully enters when brake plate brakes range2,
The braking forces thereto F when the alignment brake plate outlet of the vertical line of axis wheel3。
The brake force F1、F2、F3Be by brake apparatus according to need to brake after car team kinetic energy and braking target value calculate from
Dynamic control, brake force F1The upper limit be subject to will not wheel takeoff, be subject to when unknown car team kinetic energy will not light car takeoff；System
Power F2The upper limit be subject to will not loaded vehicle wheel takeoff；Brake force F3The upper limit with will not wheel lock up and brake apparatus maximum can be high
Subject to.
The brake plate length is no more than two axletrees on roller bearing adapter stabilizer bar away from the size for subtracting a wheel diameter,
The actuating mechanism at both ends is individually controllable, starts to apply brake force F when wheel enters brake plate arrival end4, when axis wheel hangs down
When line is directed at brake plate entrance, brake plate and the stock rail of control unit control action mechanism form slight inverted tubaeform and incline
Angle so that the latter half of brake force between brake plate of wheel is more than the brake force between wheel first half and brake plate.
The brake apparatus, separate unit brake apparatus is simultaneously only to a pair of wheel to applying brake force.
The brake plate is made of the friction material with ceramic structure.
Compared with prior art, when above-mentioned braking method is braked, wheel is made to compress stock rail, increases wheel and basic
The frictional resistance of rail is finally to the brake force of wheel：To wheel apply brake force generate frictional resistance and make car team
Kinetic energy be converted into analysis of wheel vertical in stock rail lower pressure both the frictional resistance of increased wheel and stock rail resultant force.
Thus this method can inhibit to jump and take turns, and in the case that will not light car jump wheel and improve the maximum that applies to wheel of brake apparatus
Brake force, while the brake force applied to wheel is automatically controlled by brake apparatus according to car team kinetic energy and speed governing desired value,
So that brake force size is not influenced by car weight, to improve the stopping power in brake apparatus unit length so that braking
Device miniaturization, intelligence.
Description of the drawings
Wheel loading process analysis chart when Fig. 1 is existing retarder, boundary member braking.
Fig. 2 is wheel force analysis figure when applying brake force to axis wheel vertical line with rear.
Fig. 3 is that short brake plate only applies brake force braking process figure to axis wheel with rear.
Fig. 4 is that moderate-length brake plate applies synthetical restraint dynamic braking procedure chart to wheel.
Fig. 5 is that long brake plate applies synthetical restraint dynamic braking procedure chart to wheel.
Specific implementation mode
The braking method of the present invention is described in further detail below in conjunction with attached drawing.
The method that railway station track car team brake apparatus brakes car team, brake apparatus to the car team braked of needs wheel into
Brake force is applied with rear to axis wheel vertical line after entering the effective range of brake apparatus, or enters braking dress in wheel
The effective range set starts to apply small brake force, the power using ensure will not wheel takeoff be detached from stock rail as the upper limit, work as wheel
Brake force increases after the whole effective range for entering brake apparatus, when axis wheel leaves with front effective model of brake apparatus
Enclose rear brake force increase to will not wheel lock up dynamics, formation be equivalent to only to axis wheel vertical line with rear apply brake
Power.To the right such as Fig. 2 wheels traffic direction, wheel rolling direction is clockwise, when brake apparatus is to axletree as shown in phantom in the drawing
According to active force and reaction force when heart vertical line applies brake force with rear, brake force, which can be formed, is cut along wheel by brake force point
Downward power and resistance backward on line direction, since wheel has the tendency that rolling travels forward, so tangential direction is downward
Power translates into the power that wheel compresses downwards stock rail, compared with putting mode of braking before existing brake apparatus is to wheel so not
It only eliminates and lifts the power of wheel by what brake force generated, and increase the lower pressure that wheel pushes stock rail, it is corresponding just to increase
The big frictional resistance of wheel and stock rail, thus this method can effectively inhibit to jump and take turns and improve brake force.Using the party
It is related to the brake force and car team kinetic energy size of consumption to the application of car team kinetic energy when legal system is moved, the bigger generation of brake force to
Resistance afterwards is with regard to big, and the pressure that the bigger corresponding wheel of car team kinetic energy pushes stock rail is bigger, finally to the comprehensive of the kinetic energy of car team
It is just big to close consumption, but when brake force is excessive will be such that wheel lock up slides, and not only damage rail and wheel tread in this way, subtract simultaneously
Small wheel pushes the pressure of stock rail, thus maximum braking force with will not wheel lock up be limited.
This method, which is not only applicable to contact friction to wheel, generates the braking equipment of brake force, while being also applied for and vehicle
Take turns the braking equipment of cordless braking.Below in conjunction with using Inner support flat push type brake plate mode embodiment to the present invention into
One step illustrates.It should be appreciated that specific embodiment described herein is used only for explaining the present invention, it is not used to limit this hair
It is bright.
The method that railway station track car team brake apparatus brakes car team, brake apparatus is to moving or having the wheel of movement tendency
Apply brake force, brake apparatus applies brake force, installation position detection to wheel movement trend direction axle center vertical line with rear
Unit, control unit, actuating mechanism, power supply unit and communication bus；The detection unit is for detecting wheel position and speed
Information is spent, and connects control unit；The control unit is for obtaining wheel position and velocity information, and connecting moves machine
Structure, judges the kinetic energy of the car team according to wheel position and velocity information, and the output phase answers the control instruction of brake force to action
Mechanism；The actuating mechanism include for wheel facade interact generate brake force brake plate, actuating mechanism according to
Obtained control instruction is acted applies brake force to wheel facade；The power supply unit to detection unit, control unit,
Actuating mechanism is powered, and the power supply unit is equipped with redundancy stand-by power supply unit；The communication bus is used for different systems
The communication of dynamic device；After this equipment takes turns to braking a pair of, this is calculated according to the speed of the brake force of application and wheel
The kinetic energy of car team calculates the brake force that should apply based on this kinetic energy parameters, and when next wheel is to entering, control is with this
Dynamics is braked, and the car team kinetic energy information is sent to the subsequent braking equipment in the station track by communication bus, is rear edge equipment
Brake force reference is provided.
Brake plate can be the point of a very little when being braked theoretically to being put after wheel, as long as brake force is enough
Realize expected braking effect.When consuming car team kinetic energy using friction working, friction generate resistance acting it is considered that W=
F*S,（W：The work of resistance, f：Frictional force, S：Move distance on the directions power f）；And f=FJust*μ(f：Frictional force, FJust：Normal pressure, μ：
Friction coefficient)；For W=f*S, reduce equipment size to a certain extent, be equal to shorten S, want to maintain W constant or improves W
If, only it is improved frictional force f, that is to say, that improve FJustOr μ or F is improved simultaneouslyJustAnd μ.Using the braking method
One of purpose is to reduce equipment volume, reaches maximum braking effect.Therefore brake plate and the conjunction of great friction coefficient are selected
Brake plate length and brake force the application process of reason are particularly important to the design of braking equipment, have ceramic structure below to select
Brake pad as brake plate, further illustrated in conjunction with different brake plate length and force process.
Embodiment one：The brake plate length is long to intersect wheel diameter with wheel facade no more than limit for height value inside brake plate
The half of degree, brake force apply process such as Fig. 3, and wheel brake plate at the position a, b, c does not apply brake force to wheel, works as vehicle
Axle center vertical line is directed at brake plate exit point when wheel reaches the positions d, i.e., the wheel latter half of braking range in brake plate when, control is single
First control action mechanism applies brake force F to wheelSystem, brake plate is left completely until wheel reaches the positions e, that is, wheel, it is described
Brake force FSystemBy brake apparatus according to being automatically controlled after need to braking car team kinetic energy and the calculating of braking target value, the upper limit is not with
Cause wheel lock up and more than subject to brake apparatus maximum brake energy height, when unknown car team kinetic energy with will not light car wheel lock up be
Standard, separate unit brake apparatus is simultaneously only to a pair of wheel to applying brake force, and after this is to taking turns to leaving brake plate, brake apparatus is alleviated,
It waits for lower a pair of of wheel to entrance, then is braked as stated above.This braking method control process is relatively easy, but its equipment
In the case that applying, same brake force is relatively a little bit smaller to the consumption of car team kinetic energy, the operation because wheel and brake plate mutually rub
Apart from relatively short.
Embodiment two：The brake plate length is long to intersect wheel diameter with wheel facade no more than limit for height value inside brake plate
Degree, brake force apply process such as Fig. 4, and wheel brake plate in a points does not apply brake force to wheel, enters system in b point wheels
Start to apply brake force F when movable plate arrival end1, fully entered when brake plate brakes range in c point wheels and apply brake force F2, in d
Braking forces thereto F when the vertical line alignment brake plate outlet of point axis wheel3Until e points, the brake force F1、F2、F3It is by braking
Device automatically controls after car team kinetic energy and braking target value calculate according to need to brake, brake force F1The upper limit with will not wheel takeoff
Subject to, be subject to when unknown car team kinetic energy will not light car takeoff；Brake force F2The upper limit be subject to will not loaded vehicle wheel takeoff；System
Power F3The upper limit is subject to will not wheel lock up and brake apparatus maximum energy height；The separate unit brake apparatus when implementing the braking method
Simultaneously only to a pair of wheel to applying brake force, after this is to taking turns to leaving brake plate, brake apparatus is alleviated, wait for lower a pair of of wheel into
Enter, then is braked as stated above.This method can make full use of the length of brake plate, increase the friction of brake plate and wheel
Distance improves brake force.
Embodiment three：The brake plate length is no more than two axletrees on roller bearing adapter stabilizer bar away from subtracting a wheel diameter
Size, the actuating mechanism at both ends is individually controllable, brake force apply process such as Fig. 5, wheel in a points brake plate not to vehicle
Wheel applies brake force, starts to apply brake force F when b point wheels enter brake plate arrival end4, in c point axis wheel vertical lines pair
When quasi- brake plate entrance, brake plate and the stock rail of control unit control action mechanism form slight inverted tubaeform inclination angle, right
Wheel applies brake force F5Until e points so that the latter half of brake force between brake plate of wheel facade is more than wheel facade first half
Brake force between portion and brake plate.The brake force F4、F5It is by brake apparatus according to car team kinetic energy and braking target need to be braked
What value automatically controlled after calculating, brake force F4The upper limit be subject to will not wheel takeoff, when unknown car team kinetic energy with will not light car
Subject to takeofing；Brake force F5The upper limit is subject to will not wheel lock up and brake apparatus maximum energy height；The braking method is in reality
Separate unit brake apparatus is only simultaneously rubbing with ceramic structure to applying brake force, the brake plate to a pair of wheel during applying
Material is wiped to be made.
The brake device structure built using inner support flat push type brake plate mode is relatively easy, while wheel thickness is to braking
Effect does not influence, and using the great friction coefficient brake pad of ceramic structure as brake plate, can effectively improve brake force, simultaneously
It is smaller to vehicle brakings influential effects such as oil tanker, salt wheel, wet wheels.
Claims (9)
1. the method that railway station track car team brake apparatus brakes car team, brake apparatus is to moving and having the wheel of movement tendency to apply
Braking forces thereto, which is characterized in that brake apparatus applies brake force to wheel movement trend direction axle center vertical line with rear, or
Synthetical restraint power is applied to wheel, wheel movement trend direction axle center vertical line is made to be more than axletree with the brake force that rear is subject to
The brake force that heart vertical line is subject to front.
2. the method that railway station track car team brake apparatus according to claim 1 brakes car team, which is characterized in that setting
Position detection unit, control unit, actuating mechanism, power supply unit and communication bus；
The detection unit connects control unit for detecting wheel position and speed；
The control unit is for obtaining wheel position and velocity information, and connecting moves mechanism, according to wheel position and speed
Degree information judges and exports control instruction to actuating mechanism；
The actuating mechanism includes power source and brake plate, and actuating mechanism is acted according to obtained control instruction to wheel
Apply corresponding brake force；
The power supply unit is powered detection unit, control unit, actuating mechanism, and the power supply unit is equipped with redundancy
Stand-by power supply unit；
The communication bus is for the communication between more table brakes and control system.
3. the method that railway station track car team brake apparatus according to claim 2 brakes car team, which is characterized in that described
Brake plate length is to intersect the half of wheel diameter length with wheel facade no more than limit for height value inside brake plate, when axis wheel
Vertical line be aligned brake plate outlet be wheel it is latter half of in brake plate braking range when, control unit control action mechanism is to wheel
Apply brake force FSystem。
4. the method that railway station track car team brake apparatus according to claim 3 brakes car team, which is characterized in that described
Brake force FSystemAutomatically controlled by brake apparatus according to need to brake after car team kinetic energy and braking target value calculate, the upper limit with
Will not wheel lock up and more than subject to brake apparatus maximum brake energy height, when unknown car team kinetic energy with will not light car wheel lock up
Subject to.
5. the method that railway station track car team brake apparatus according to claim 2 brakes car team, which is characterized in that described
Brake plate length is to intersect wheel diameter length with wheel facade no more than limit for height value inside brake plate, is entered when wheel enters brake plate
Start to apply brake force F when mouth end1, apply brake force F when wheel fully enters when brake plate brakes range2, when axis wheel
Braking forces thereto F when vertical line is directed at brake plate outlet3。
6. the method that railway station track car team brake apparatus according to claim 5 brakes car team, which is characterized in that described
Brake force F1、F2、F3By brake apparatus according to being automatically controlled after need to braking car team kinetic energy and the calculating of braking target value, make
Power F1The upper limit be subject to will not wheel takeoff, be subject to when unknown car team kinetic energy will not light car takeoff；Brake force F2The upper limit with
It will not be subject to loaded vehicle wheel takeoffs；Brake force F3The upper limit is subject to will not wheel lock up and brake apparatus maximum energy height.
7. the method that railway station track car team brake apparatus according to claim 2 brakes car team, which is characterized in that described
Brake plate length is no more than two axletrees on roller bearing adapter stabilizer bar away from the size for subtracting a wheel diameter, the action machine at both ends
Structure is individually controllable, starts to apply brake force F when wheel enters brake plate arrival end4, when axis wheel vertical line is directed at brake plate
When entrance, brake plate and the stock rail of control unit control action mechanism form slight inverted tubaeform inclination angle so that wheel is vertical
The latter half of brake force between brake plate in face is more than the brake force between wheel facade first half and brake plate.
8. according to the method that any railway station track car team brake apparatus of claim 2 to 7 brakes car team, feature exists
In separate unit brake apparatus is simultaneously only to a pair of wheel to applying brake force.
9. according to the method that any railway station track car team brake apparatus of claim 2 to 7 brakes car team, feature exists
In the brake plate is made of the friction material with ceramic structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510590188.4A CN105151076B (en) | 2015-09-17 | 2015-09-17 | The method that railway station track car team brake apparatus brakes car team |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510590188.4A CN105151076B (en) | 2015-09-17 | 2015-09-17 | The method that railway station track car team brake apparatus brakes car team |
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| CN105151076A CN105151076A (en) | 2015-12-16 |
| CN105151076B true CN105151076B (en) | 2018-08-10 |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB229402A (en) * | 1923-11-22 | 1925-02-23 | Giuseppe Marchesini | Improvements in apparatus for stopping and controlling the motion of railway vehicles, trains and like vehicles |
| US1845274A (en) * | 1928-07-10 | 1932-02-16 | Union Switch & Signal Co | Railway car retarder |
| US4198909A (en) * | 1976-12-16 | 1980-04-22 | Faiveley S.A. | Track brake for railways |
| TW200918380A (en) * | 2007-04-03 | 2009-05-01 | Bombardier Transp Gmbh | Track brake controller |
| CN101913365B (en) * | 2009-12-30 | 2012-06-06 | 张力 | Anti-skid stopping device for railway freight line/special line |
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2015
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Effective date of registration: 20180622 Address after: 473200 Guanyin hall 28, Yang Zhuang village, Qing River Township, Fangcheng County, Nanyang, Henan Applicant after: Deng Zhongzheng Address before: 450000 Chongyang street, Zhengzhou City, Henan Province, No. 71 Applicant before: ZHENGZHOU CHANGXIN HIGH-TECH INDUSTRY CO., LTD. |
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