CN104890682B - Locomotive sand scattering device capable of clearing fine sand grains automatically - Google Patents
Locomotive sand scattering device capable of clearing fine sand grains automatically Download PDFInfo
- Publication number
- CN104890682B CN104890682B CN201510341549.1A CN201510341549A CN104890682B CN 104890682 B CN104890682 B CN 104890682B CN 201510341549 A CN201510341549 A CN 201510341549A CN 104890682 B CN104890682 B CN 104890682B
- Authority
- CN
- China
- Prior art keywords
- sand
- air
- stucco
- tuyere
- inner chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C15/00—Maintaining or augmenting the starting or braking power by auxiliary devices and measures; Preventing wheel slippage; Controlling distribution of tractive effort between driving wheels
- B61C15/08—Preventing wheel slippage
- B61C15/10—Preventing wheel slippage by depositing sand or like friction increasing materials
- B61C15/102—Preventing wheel slippage by depositing sand or like friction increasing materials with sanding equipment of mechanical or fluid type, e.g. by means of steam
Abstract
The invention provides a locomotive sand scattering device capable of clearing fine sand grains automatically. An elastic air storage bag and self-clearing sand scattering and sand stirring air nozzles are added on the basis of an original sand scattering machine. When an air inlet of the sand scattering device is closed, the elastic air storage bag is used for balancing air pressure in an air inlet pipe and a cavity of the sand scattering device, and air in a sand scattering device body is prevented from backward flowing into a high-pressure air inlet pipe to a larger extent; the structure of the sand scattering air nozzle is special, an air return groove is designed in an outlet end of the sand scattering air nozzle; when air and dust in the cavity of the sand scattering device flow back into the high-pressure air inlet pipe, a part of dust can be retained in the air return groove due to the expansion effect of the air return groove, and accordingly, the amount of dust entering the high-pressure air inlet pipe is reduced. Besides, the inside of the sand scattering air nozzle is conical, so that the fine sand grains backwards sucked into the air inlet pipe can be accumulated at an air nozzle outlet along with air current when the sand scattering device is started again and can be discharged out of the high-pressure air inlet pipe smoothly as the air pressure is increased, and the sand scattering device has an automatic clearing function on the fine sand grains.
Description
Technical field
The present invention relates to a kind of locomotive sand sprayer, particularly there is automatic cleaning fine sand grain and nonclogging locomotive sand-spraying
Device.
Background technology
Sand sprayer is a vitals on locomotive, to increase wheel track by way of the stucco between take turns to rail
Friction, in locomotive climbing, accelerates, brakes etc. to play very important effect in operation, preventing wheel drive track adhesion from reducing and lead
Cause train wheel that idle running occurs it is ensured that locomotive normally runs and do not occur way to stop.
The situation of the stifled sand of domestic sand sprayer occurs now and then at present, greatly threatens the operation safety of locomotive, in order to ensure
The stable operation of locomotive, needs the fine sand grain in periodic cleaning sand sprayer intake stack, to prevent sand sprayer from blocking, causes to run
Fault.The scale removal process of sand sprayer is comparatively laborious, wastes time and energy, and significantly increases the workload of personnel after sale.Therefore solve
The stifled sand situation of sand sprayer, or increase cleaning cycle length, then can save substantial amounts of after-sale service work.
The moment that present sand sprayer terminates in stucco, in intake stack, lose the supplement of gas, but intake stack
In gases at high pressure may proceed to quickly flow forward, thus causing intake stack near the reduced pressure of porch, in addition occur
Negative pressuren zone, and the air pressure in sand sprayer cavity can ratio larger, thus easily cause air-flow being flowed back into stirring sand tuyere by stucco
In intake stack, the dust being mingled with air-flow or fine sand grain then can enter in intake stack, with the increase of circulation, sand sprayer wind
Mouth just has the danger of blocking.
Content of the invention
It is an object of the invention to overcoming above-mentioned deficiency, one kind is provided to have automatic cleaning fine sand grain and nonclogging locomotive
Sand sprayer.
The technical scheme is that a kind of locomotive sand sprayer of self-cleaning fine sand grain, including stucco body, middle interval
Plate, baffle plate, high pressure blast pipe, stucco tuyere, stir sand tuyere, sand inlet, sand export, wherein, high pressure blast pipe passes through stucco wind
Mouth and stir sand tuyere and communicate with stucco device cavity；It is characterized in that:
High pressure blast pipe in described stucco body is provided with three way cock and elastic air storage bag, i.e. three way cock's setting
On high pressure blast pipe, elastic air storage bag is arranged on three way cock；It is divided into as in stucco by central dividing plate in sand sprayer body
Chamber and stir sand inner chamber, two inner chamber tops of stucco body communicate；
Described stucco tuyere is identical with stirring sand air nozzle structure, and two tuyeres are arranged at stucco body, i.e. stucco tuyere
Communicate with high pressure blast pipe respectively with stirring sand tuyere upper end, lower end respectively with stucco inner chamber and stir sand inner chamber and communicate, two tuyeres
Endoporus be taper pore structure；I.e. the air inlet of two tuyeres is big, and gas outlet is gradually reduced, and two wind nozzle outlet ends are equipped with
The anti-return air groove inhaling dust；This locomotive sand sprayer is installed on below sandbox.
Described stirs sand tuyere for digging in entrance stucco inner chamber by the grains of sand stirring in sand inner chamber, in the height of stucco tuyere
Blow out at sand export under fast airflow function.
It is provided with elastic air storage bag in the present invention, in this elastic air storage bag, gases at high pressure can be stored.When sand sprayer is opened,
Now, the intracapsular gas pressure of elastic gas storage is low, and the gas in high pressure blast pipe in sand sprayer can supplement the elastic air storage bag of entrance
Interior, promote elastic air storage bag to expand storage gas, when the high pressure blast pipe on sand sprayer is closed, stucco stops, high pressure air intake
Gas pressure in pipe can decline, and the gas in elastic air storage bag will flow into entrance stucco body in high pressure blast pipe and tuyere
Interior it is ensured that in high pressure blast pipe gas pressure be gradually lowered, it is to avoid backflow.
Two air nozzle structures in the present invention are improved, by stucco tuyere be changed to taper pore structure tuyere so as to
With to stir sand tuyere air inlet big, gas outlet is gradually reduced for stucco, so that tuyere gas outlet speed gets a promotion, when having in tuyere
The tiny grains of sand enter fashionable, and when being again turned on sand sprayer, the tiny grains of sand in tuyere can be blown tuyere, make sand sprayer to dust and
Fine sand grain is provided with self-cleaning function.Meanwhile, setting anti-suction dust structure at two wind nozzle outlets, that is, in two wind nozzle outlets
End is provided with the anti-return air groove inhaling dust, when gas because when flowing back into stucco tuyere, the dust or tiny of doping in gas
The grains of sand, now, cause dust or the tiny grains of sand to rest in the groove at stucco wind nozzle outlet due to air-flow broadening herein, when
After flow slowing down, dust or the tiny grains of sand can drop again under gravity, decrease the dust that suck-back enters in tuyere with thin
Sha Liang.
In sum, the high pressure blast pipe in the present invention provides high pressure draught for two tuyeres, and high pressure draught passes through tuyere,
Kick up stirring the sand in sand inner chamber on the right side of stucco body, enter in stucco inner chamber on the left of stucco body, subsequently in stucco tuyere
The blowing of gases at high pressure under, sand scatters between wheel track from sand export, to increase wheel-rail friction it is ensured that locomotive is normally transported
OK；Two wind nozzle outlet ends in the present invention are return air groove structure, can reduce entrance high pressure blast pipe to a certain extent
Dust and fine sand grain amount in road, stucco tuyere interior tapered hole is easy to dust and fine sand grain in high pressure intake stack and is blown out；Elasticity
Air storage bag stores gas when sand sprayer gases at high pressure are opened, and when gases at high pressure are closed, the gas in elastic air storage bag is toward height
It is pressed into aerofluxuss in wind pipeline, gradually blood pressure lowering is to balance high pressure intake stack and the endoceliac air pressure of sand sprayer, it is to avoid sand sprayer
The backflow of gas during closing, solves the difficult problem that sand sprayer blocks up sand..
Brief description
Fig. 1 is the structural representation of sand sprayer system；
Fig. 2 is stucco tuyere upper end surface structure schematic diagram；
Fig. 3 is stucco tuyere c-c cross section structure diagram；
In figure: 1- stucco body, 2- central dividing plate, 3- baffle plate, 4- three way cock, 5- high pressure blast pipe, 6- elasticity gas storage
Capsule, 7- stucco tuyere, 8- stirs sand tuyere, 9- sand inlet, 10- sand export, 11- stucco inner chamber, and it is recessed that 12- stirs sand inner chamber, 13- return air
Groove, 14- tuyere air inlet, 15- tuyere gas outlet.
Specific embodiment
Refer to the attached drawing, a kind of locomotive sand sprayer of self-cleaning fine sand grain, including stucco body 1, central dividing plate 2, baffle plate 3,
High pressure blast pipe 4, stucco tuyere 7, stir sand tuyere 8, sand inlet 9, sand export 10, wherein, high pressure blast pipe 4 passes through stucco tuyere
7 and stir sand tuyere 8 and communicate with stucco body 1 inner chamber；It is characterized in that:
High pressure blast pipe 4 in described stucco body 1 is provided with three way cock 5 and elastic air storage bag (6), three connects
5 are arranged on high pressure blast pipe 4, and elastic air storage bag 6 is arranged on three way cock 5；Pass through central dividing plate 2 in stucco body 1
It is divided into as stucco inner chamber 11 and stirs sand inner chamber 12, two inner chamber tops of stucco body 1 communicate；
Described stucco tuyere 7 is identical with stirring sand tuyere 8 structure, and two tuyeres are arranged at stucco body 1, i.e. stucco wind
Mouth 7 and stir sand tuyere 8 upper end and communicate with high pressure blast pipe 4 respectively, lower end respectively with stucco inner chamber 11 and stir sand inner chamber 12 and communicate,
The endoporus of two tuyeres is taper pore structure；I.e. the air inlet 14 of two tuyeres is big, and gas outlet 15 is gradually reduced, two tuyeres
The port of export is equipped with the anti-return air groove 13 inhaling dust；This locomotive sand sprayer is installed on below sandbox.
Described stirs sand tuyere 8 for digging in entrance stucco inner chamber 11 by the grains of sand stirring in sand inner chamber 12, in stucco wind
Blow out at sand export 10 under the action of high-speed airflow of mouth 7.
It is provided with elastic air storage bag 6 in the present invention, gases at high pressure can be stored in this elastic air storage bag 6, when sand sprayer is opened
When, now, in elastic air storage bag 6, gas pressure is low, and the gas in high pressure blast pipe 4 in sand sprayer can supplement entrance elasticity storage
In air bag 6, elastic air storage bag 6 is promoted to expand storage gas, when the high pressure blast pipe 4 on sand sprayer is closed, stucco stops, high
The gas pressure being pressed in airduct 4 can decline, and the gas in elastic air storage bag 6 will flow into high pressure blast pipe 4 and two tuyeres
Enter in stucco body 1 it is ensured that gas pressure is gradually lowered in high pressure blast pipe 4 in 7,8, it is to avoid backflow.
Two tuyeres 7,8 in the present invention improve in structure, by two tuyeres be changed to taper pore structure tuyere so as to
Air inlet 14 is big, and gas outlet 15 is gradually reduced, so that two tuyere gas outlet speed get a promotion, when there being tiny sand in two tuyeres
Grain enters fashionable, and when being again turned on sand sprayer, the tiny grains of sand in tuyere can be blown tuyere, makes sand sprayer to dust and fine sand grain
It is provided with self-cleaning function.Meanwhile, setting anti-suction dust structure at two wind nozzle outlets 15, that is, in two tuyeres 7,8 port of export
It is provided with the anti-return air groove 13 inhaling dust.When gas because when flowing back into tuyere, the dust of doping or the tiny grains of sand in gas,
Now, due to air-flow broadening herein, dust or the tiny grains of sand rest in the groove at wind nozzle outlet, after flow slowing down, powder
Dirt or the tiny grains of sand can drop again under gravity, decrease the dust entering in tuyere and fine sand amount.
High pressure blast pipe 4 in the present invention provides high pressure draught for stucco tuyere 7 with stirring sand tuyere 8, and high pressure draught passes through
Stir sand tuyere 8 and kick up stirring the sand in sand inner chamber 12, enter in left side stucco inner chamber 11 in stucco body 1, subsequently in stucco
Under the blowing of gases at high pressure of tuyere 7, sand scatters between wheel track from sand export 10, to increase wheel-rail friction it is ensured that locomotive
Normal operation；Two wind nozzle outlet ends in the present invention are groove structure, reduce to a certain extent and enter powder in high pressure blast pipe 4
Dirt and fine sand grain amount, two tuyere interior tapered holes are easy to dust and fine sand grain in high pressure blast pipe 4 and are blown out；Elastic air storage bag 6 exists
Gas is stored, when gases at high pressure are closed, the gas in elastic air storage bag 6 is toward high pressure blast pipe when sand sprayer gases at high pressure are opened
Aerofluxuss in 4, gradually blood pressure lowering, to balance high pressure blast pipe 4 and stucco body stucco inner chamber 11 and to stir air pressure in sand inner chamber 12, keeps away
Exempt from the backflow of gas when sand sprayer cuts out, decrease the possibility that sand sprayer blocks up sand.Two tuyere one side are conducive to air-flow to add
Speed flows in sand sprayer cavity, on the other hand, when having dust or fine sand grain in high pressure blast pipe 4, opens again with sand sprayer
Open, high pressure draught is easily blown out dust and fine sand grain so that sand sprayer is provided with certain self-cleaning function by tuyere.
Secondly, two wind nozzle outlet end designs are fluted, and when backflow in sand sprayer, the dust in air-flow can be because groove with fine sand grain
The extension effect of stream field and major part are stayed in a groove, can fall under gravity into sand sprayer chamber when air-flow stops backflow again
In body 1, greatly reducing suck-back and enter dust and the amount of fine sand grain in blast pipe 4, solve the difficult problem that sand sprayer blocks up sand.
When preparation stucco opened by sand sprayer, it is full of gases at high pressure in high pressure blast pipe 4, due to the effect of pressure reduction, gas
Can enter in elastic air storage bag 6, make elastic air storage bag 6 expand storage gas, gradually elastic air storage bag 6 pressure can be pressed into height
Pressure balance in airduct 4, so then completes elastic air storage bag 6 and inflates；When sand sprayer cuts out, air pressure meeting in high pressure blast pipe 4
Reduce, in elastic air storage bag 6, pressure is higher than intake stack pressure, then can carry out equilibrium air pressure toward aerofluxuss in blast pipe 4, i.e. blast pipe
Air pressure in 4 is a process being gradually lowered, and this just becomes largely to decrease gas and from stucco inner chamber 11 and stirs in sand
The possibility of blast pipe is flowed back in chamber 12.
Claims (1)
1. a kind of locomotive sand sprayer of self-cleaning fine sand grain, is pressed into including stucco body (1), central dividing plate (2), baffle plate (3), height
Airduct (4), stucco tuyere (7), stir sand tuyere (8), sand inlet (9), sand export (10), wherein, high pressure blast pipe (4) passes through to spread
Sand tuyere (7) and stir sand tuyere (8) and communicate with stucco body (1) inner chamber；It is characterized in that:
High pressure blast pipe (4) in a, described stucco body (1) is provided with three way cock (5) and elastic air storage bag (6), and that is, three
Pass joint (5) is arranged on high pressure blast pipe (4), and elastic air storage bag (6) is arranged on three way cock (5)；In stucco body (1)
It is divided into as stucco inner chamber (11) by central dividing plate (2) and stir sand inner chamber (12), two inner chamber top phases of stucco body (1)
Logical；
B, described stucco tuyere (7) are identical with stirring sand tuyere (8) structure, and two tuyeres are arranged at stucco body (1), that is, spread
Sand tuyere (7) and stir sand tuyere (8) upper end and communicate with high pressure blast pipe (4) respectively, lower end respectively with stucco inner chamber (11) and stirring
Sand inner chamber (12) communicates, and the endoporus of two tuyeres is taper pore structure；I.e. the air inlet (14) of two tuyeres is big, gas outlet
(15) it is gradually reduced, two wind nozzle outlet ends are equipped with the anti-return air groove (13) inhaling dust；
C, the described sand tuyere (8) that stirs enter in stucco inner chamber (11) for digging the grains of sand stirring in sand inner chamber (12), are spreading
Blow out from sand export (10) under the action of high-speed airflow of sand tuyere (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510341549.1A CN104890682B (en) | 2015-06-19 | 2015-06-19 | Locomotive sand scattering device capable of clearing fine sand grains automatically |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510341549.1A CN104890682B (en) | 2015-06-19 | 2015-06-19 | Locomotive sand scattering device capable of clearing fine sand grains automatically |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104890682A CN104890682A (en) | 2015-09-09 |
| CN104890682B true CN104890682B (en) | 2017-02-01 |
Family
ID=54023777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510341549.1A Active CN104890682B (en) | 2015-06-19 | 2015-06-19 | Locomotive sand scattering device capable of clearing fine sand grains automatically |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104890682B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107472263A (en) * | 2017-06-30 | 2017-12-15 | 中车大连机车车辆有限公司 | A kind of stucco unit for preventing stucco blockage |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101733338B1 (en) | 2016-01-13 | 2017-05-08 | 세종대학교산학협력단 | Rice washing device |
| CN108545089B (en) * | 2018-04-27 | 2023-12-12 | 唐山森普矿山装备有限公司 | Sand spraying device for mining electric locomotive |
| CN112233527A (en) * | 2020-10-19 | 2021-01-15 | 张广君 | Three-dimensional electronic sand table cleaning method for urban planning and design |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0656292A1 (en) * | 1993-12-01 | 1995-06-07 | Forges De Belles-Ondes | Sanding device with a recipient containing granular matter, particularly sand, for a wheel of a rail coach |
| CN202115519U (en) * | 2011-06-24 | 2012-01-18 | 李长俊 | Unblocking sanding device capable of sanding easily |
| CN102923134A (en) * | 2012-11-06 | 2013-02-13 | 株洲市锦丰机车配件厂 | Sand spreading method and device of locomotive sand spreader |
| CN202966305U (en) * | 2012-11-06 | 2013-06-05 | 株洲市锦丰机车配件厂 | Sand spreader tuyere for locomotive |
| DE202014104156U1 (en) * | 2014-02-04 | 2014-09-15 | Ibeg Systems Gmbh | Device for monitoring the flow of liquid or solid media conveyed by compressed air, in particular sand, sanding device for vehicles and vehicle with such a sanding device |
| CN204750162U (en) * | 2015-06-19 | 2015-11-11 | 株洲联诚集团有限责任公司 | Locomotive stucco ware of self -cleaning fine sand grain |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5227111A (en) * | 1975-08-23 | 1977-03-01 | Japanese National Railways<Jnr> | Scavenge device for sander of locomotive |
-
2015
- 2015-06-19 CN CN201510341549.1A patent/CN104890682B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0656292A1 (en) * | 1993-12-01 | 1995-06-07 | Forges De Belles-Ondes | Sanding device with a recipient containing granular matter, particularly sand, for a wheel of a rail coach |
| CN202115519U (en) * | 2011-06-24 | 2012-01-18 | 李长俊 | Unblocking sanding device capable of sanding easily |
| CN102923134A (en) * | 2012-11-06 | 2013-02-13 | 株洲市锦丰机车配件厂 | Sand spreading method and device of locomotive sand spreader |
| CN202966305U (en) * | 2012-11-06 | 2013-06-05 | 株洲市锦丰机车配件厂 | Sand spreader tuyere for locomotive |
| DE202014104156U1 (en) * | 2014-02-04 | 2014-09-15 | Ibeg Systems Gmbh | Device for monitoring the flow of liquid or solid media conveyed by compressed air, in particular sand, sanding device for vehicles and vehicle with such a sanding device |
| CN204750162U (en) * | 2015-06-19 | 2015-11-11 | 株洲联诚集团有限责任公司 | Locomotive stucco ware of self -cleaning fine sand grain |
Non-Patent Citations (1)
| Title |
|---|
| 八轴交流电力机车撒砂阀风咀堵塞及撒砂不畅分析;邹超峰;《技术与市场》;20150531;第22卷(第5期);全文 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107472263A (en) * | 2017-06-30 | 2017-12-15 | 中车大连机车车辆有限公司 | A kind of stucco unit for preventing stucco blockage |
| CN107472263B (en) * | 2017-06-30 | 2019-03-19 | 中车大连机车车辆有限公司 | A kind of stucco unit preventing stucco blockage |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104890682A (en) | 2015-09-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104890682B (en) | Locomotive sand scattering device capable of clearing fine sand grains automatically | |
| CN102277846A (en) | Suction-sweeping type sweeping machine and suction tube dust falling device thereof | |
| CN104534530B (en) | No-clean range hood | |
| CN204750162U (en) | Locomotive stucco ware of self -cleaning fine sand grain | |
| CN104741354A (en) | Discharging garbage pond with no odor emission | |
| CN104997469A (en) | Cleaning device generating two suction flows | |
| CN208845216U (en) | It is a kind of can spray drying mist and wet fog dedusting fan | |
| CN101598134A (en) | A kind of whirlwind moisture film wet dust removal axial-flow blower | |
| CN105569721B (en) | A kind of annular jet dust pelletizing system of mining aerosol linkage | |
| CN204544938U (en) | A kind of odorless distributes discharging garbage pool | |
| CN205164414U (en) | Wet -type whirlwind water curtain dust collector | |
| CN110195610A (en) | A kind of critical dry and wet dust-extraction unit of mining two-stage ultrafiltration | |
| CN102805983A (en) | Gas purifier and venturi flume thereof | |
| CN108568166A (en) | A kind of dust remover side air-intake device and bag filter | |
| CN107472263B (en) | A kind of stucco unit preventing stucco blockage | |
| CN201416552Y (en) | Spray centrifugal dedusting fan | |
| CN107281854A (en) | A kind of wet dust separater for timber dust | |
| CN105177630B (en) | A kind of Smoke Gas Purity by Electrolysis is unpowered injection charging process and device | |
| CN204060580U (en) | A kind of efficient drilling gas and coal dust Integrated Processing Unit | |
| CN207137682U (en) | Recirculating fluidized bed desulphurization system | |
| CN204280611U (en) | A kind of backflow self-declining type micro-power dust remover | |
| CN205277732U (en) | High -strength sand -discharging pump | |
| CN102359390A (en) | Combined-type fence-wet fiber grid dust remover | |
| CN206762545U (en) | A kind of Multifucntional deduster | |
| CN205858401U (en) | A kind of deep drop shaft wet type and dry type double atomization dust separation system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230608 Address after: 412000 Hunan Province, Zhuzhou Shifeng District Tian Xin North Gate Patentee after: HUNAN LINCE ROLLING STOCK EQUIPMENT Co.,Ltd. Address before: 412000 technical management department, Lianxin group, Tianxin north gate, Shifeng District, Zhuzhou, Hunan Patentee before: ZHUZHOU LINCE GROUP Co.,Ltd. |