CN204586910U - Energy disperser - Google Patents
Energy disperser Download PDFInfo
- Publication number
- CN204586910U CN204586910U CN201520308244.6U CN201520308244U CN204586910U CN 204586910 U CN204586910 U CN 204586910U CN 201520308244 U CN201520308244 U CN 201520308244U CN 204586910 U CN204586910 U CN 204586910U
- Authority
- CN
- China
- Prior art keywords
- casing
- casing section
- energy disperser
- supporting seat
- friction component
- 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
Landscapes
- Springs (AREA)
Abstract
The utility model provides a kind of energy disperser, the friction component comprising casing and be arranged in casing and elastic parts, casing comprises the first casing section and the second casing section that axially connect along it, and friction component is arranged in the first casing section, and elastic parts is arranged in the second casing section; In the junction of the first casing section and the second casing section, the internal diameter of the second casing section is less than the internal diameter of the first casing section to form support rim, and friction component is supported on support rim.Because support rim is formed by the upper surface of the second casing section; like this; when this support rim withstands shocks power; this impulsive force is not concentrated on this support rim; and can be delivered to outside casing along the second casing section; and then protective effect is served to support rim, thus slow down the damage of energy disperser.
Description
Technical field
The utility model relates to engineering truck field, in particular to a kind of energy disperser.
Background technology
At present, the megatrend that heavy loading is world's railway truck transportation development is transported.Along with the development of market economy, total volume of railway freight increases rapidly in recent years, and railway loading of freight waggon every day is about 1/2 of actual demand.Meanwhile, high ferro is completed and is brought passenger trains and freight trains are seperated, and freight-transport capacity and lorry demand will progressively be released, for the development of railway freight traffic provides condition.During 12, China is by according to self economic development and railway development new situations, in conjunction with existing road network condition, on the large product engineering platform base of existing 70t level general purpose freight car, 80t level special purpose freight car and 120km/h speed-up railway freight three, base oneself upon autonomous innovation, make railway truck technology reach world lead level, meet the development need separating lines for passenger and freight transport better.
Energy disperser is the important component part of lorry coupler buffering device, its effect relaxes the longitudinal impulse produced in train travelling process, apparatus with shock absorbing, transmits the longitudinal force between vehicle, improve lorry traveling comfort, avoid vehicle and goods to be damaged.Need for different vehicles, active development and application lorry energy disperser, improve train and longitudinal direction of car dynamic performance, to advancing further, Chinese Railway Freight Transport heavy loading is significant.
But as depicted in figs. 1 and 2, this energy disperser is made up of casing 1, friction system 2 and elastic system 3 existing dry friction type energy disperser keystone configuration.It has following shortcoming:
(1) the carrying convex shoulder 4 of the casing of energy disperser adopts cantilever beam structure, and root easily causes stress to concentrate, and then causes this casing to damage;
(2) internal face of the casing of energy disperser and supporting seat appearance profile fit dimension unreasonable, energy disperser has the possibility that clamping stagnation occurs;
(3) energy disperser quality is large, and cost is high.
Utility model content
Main purpose of the present utility model is to provide a kind of energy disperser, holds damageable problem with the casing solving energy disperser of the prior art.
To achieve these goals, the utility model provides a kind of energy disperser, the friction component comprising casing and be arranged in casing and elastic parts, casing comprises the first casing section and the second casing section that axially connect along it, friction component is arranged in the first casing section, and elastic parts is arranged in the second casing section; In the junction of the first casing section and the second casing section, the internal diameter of the second casing section is less than the internal diameter of the first casing section to form support rim, and friction component is supported on support rim.
Further, the second casing section upper end towards casing inner side tilt to form support rim.
Further, elastic parts comprises supporting seat and elastic component, and supporting seat is arranged between elastic component and friction component movably, and elastic component is connected between the diapire of casing and supporting seat.
Further, elastic component is made up of interior coil spring and cylindrical spring, and outer coil spring is arranged on the outside of interior coil spring.
Further, the inwall of the second casing section is provided with position-limited trough, and supporting seat is provided with the spacing preiection matched with position-limited trough, and spacing preiection is positioned at position-limited trough.
Further, two relative sidewalls of the second casing section are provided with position-limited trough, and supporting seat are provided with and each position-limited trough spacing preiection one to one.
Further, elastic component be positioned at position-limited trough at least partially.
Further, friction component comprises center wedge and is arranged on the side voussoir outside center wedge, and impulsive force is delivered to casing by side voussoir by center wedge.
Further, friction component also comprises dynamic plate, and dynamic plate is arranged on the outside of side voussoir, and one end of dynamic plate is connected the transmission realizing impulsive force between friction component and elastic parts with elastic parts.
Further, friction component also comprises swash plate and outer stationary plates, and swash plate is arranged between dynamic plate and side voussoir, and outer stationary plates is arranged between the inwall of dynamic plate and the first casing section.
Further, outer stationary plates is provided with guide groove, that moves plate is positioned at guide groove at least partially.
Energy disperser in the utility model comprises casing and the friction component be arranged in casing and elastic component, casing comprises the first casing section and the second casing section, and in both junctions, the internal diameter of the second casing section is less than the internal diameter of the first casing section to form the support rim supporting this friction component.Because support rim is formed by the upper surface of the second casing section; like this; when this support rim withstands shocks power; this impulsive force is not concentrated on this support rim; and can be delivered to outside casing along the second casing section; and then protective effect is served to support rim, thus slow down the damage of energy disperser.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 shows the structural representation of energy disperser of the prior art;
Fig. 2 shows the structural representation of the casing of energy disperser of the prior art;
Fig. 3 shows the front view of the energy disperser in the utility model;
Fig. 4 shows the lateral plan of the energy disperser in the utility model;
Fig. 5 shows the lateral plan of the casing of the energy disperser in the utility model;
Fig. 6 shows the front view of the casing of the energy disperser in the utility model;
Fig. 7 shows the cutaway view of the casing of the energy disperser in the utility model;
Fig. 8 shows the birds-eye view of the casing of the energy disperser in the utility model;
Fig. 9 shows the structural representation of the supporting seat in the utility model;
What Figure 10 showed supporting seat in the utility model and casing coordinates schematic diagram;
Figure 11 shows the front view of the outer stationary plates in the utility model; And
Figure 12 shows the birds-eye view of the outer stationary plates in this practical habit.
Wherein, above-mentioned accompanying drawing comprises the following drawings mark:
10, casing; 11, the first casing section; 12, the second casing section; 13, support rim; 14, position-limited trough; 20, supporting seat; 21, spacing preiection; 30, elastic component; 31, interior coil spring; 32, outer coil spring; 40, center wedge; 50, side voussoir; 60, dynamic plate; 70, swash plate; 80, outer stationary plates; 81, guide groove; 91, locating dowel pin; 92, chafing strip; 93, retracing spring.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
The utility model provides a kind of energy disperser, please refer to Fig. 3 to Figure 12, energy disperser comprises casing 10 and the friction component be arranged in casing 10 and elastic parts, casing 10 comprises the first casing section 11 and the second casing section 12 axially connected along it, friction component is arranged in the first casing section 11, and elastic parts is arranged in the second casing section 12; In the junction of the first casing section 11 and the second casing section 12, the internal diameter of the second casing section 12 is less than the internal diameter of the first casing section 11 to form support rim 13, and friction component is supported on support rim 13.
Energy disperser in the utility model comprises casing 10 and the friction component be arranged in casing 10 and elastic component, casing 10 comprises the first casing section 11 and the second casing section 12, and in both junctions, the internal diameter of the second casing section 12 is less than the internal diameter of the first casing section 11 to form the support rim 13 supporting this friction component.Because support rim 13 is formed by the upper surface of the second casing section 12; like this; when this support rim 13 withstands shocks power; this impulsive force is not concentrated on this support rim 13; and can be delivered to outside casing along the second casing section 12; and then protective effect is served to support rim 13, thus slow down the damage of energy disperser.
Preferably, the second casing section 12 upper end towards casing 10 inner side tilt to form support rim 13.Like this, when this support rim 13 is subject to impulsive force, this impulsive force can be delivered on coupled parts along this casing 10.
Preferably, elastic parts comprises supporting seat 20 and elastic component 30, and supporting seat 20 is arranged between elastic component 30 and friction component movably, and elastic component 30 is connected between the diapire of casing 10 and supporting seat 20.This elastic component 30 plays the effect cushioned impulsive force.
Preferably, elastic component 30 is made up of interior coil spring 31 and outer coil spring 32, and outer coil spring 32 is arranged on the outside of interior coil spring 31.Energy disperser in the application, compared with existing dry friction type energy disperser, eliminates 4 angle springs, has redesigned the mechanics parameters of interior coil spring, outer coil spring.
Preferably, the inwall of the second casing section 12 is provided with position-limited trough 14, and supporting seat 20 is provided with the spacing preiection 21 matched with position-limited trough 14, and spacing preiection 21 is positioned at position-limited trough 14.The application, by arranging position-limited trough 14 and spacing preiection 21, can carry out spacing to supporting seat 20, and then ensures to prevent supporting seat 20 from deflecting under the drive of elastic component 30.
Preferably, two relative sidewalls of the second casing section 12 are provided with position-limited trough 14, and supporting seat 20 are provided with and each position-limited trough 14 spacing preiection 21 one to one.Preferably, two relative sidewalls of the second casing section 12 are provided with a position-limited trough 14, and the position-limited trough 14 on these two sidewalls is just to setting.Like this, the limit effect to supporting seat 20 can be improved.
Preferably, elastic component 30 be positioned at position-limited trough 14 at least partially.Like this, position-limiting action can be played to elastic component 30.
Preferably, the side voussoir 50 that friction component comprises center wedge 40 and is arranged on outside center wedge 40, impulsive force is delivered to casing 10 by side voussoir 50 by center wedge 40.Like this, when center wedge 40 receives impulsive force, this impulsive force can be delivered to casing 10 through side voussoir 50.
Preferably, friction component also comprises dynamic plate 60, and dynamic plate 60 is arranged on the outside of side voussoir 50, and one end of dynamic plate 60 is connected the transmission realizing impulsive force between friction component and elastic parts with elastic parts.By arranging dynamic plate 60, the transmission of the impulsive force between friction component and elastic parts can be realized more easily.
Preferably, friction component also comprises swash plate 70 and outer stationary plates 80, and swash plate 70 is arranged between dynamic plate 60 and side voussoir 50, and outer stationary plates 80 is arranged between dynamic plate 60 and the inwall of the first casing section 11.By arranging swash plate 70, the transmission of the impulsive force between dynamic plate 60 and side voussoir 50 can being realized more easily, by arranging swash plate 70, the transmission of the impulsive force between dynamic plate 60 and the first casing section 11 can be realized more easily.
Preferably, outer stationary plates 80 is provided with guide groove 81, that moves plate 60 is positioned at guide groove 81 at least partially.Like this, both can reduce the friction between outer stationary plates 80 and dynamic plate 60, directional tagging can also be played to dynamic plate 60.
The utility model is ensureing that bumper property parameter meets 60t, 70t, 80t level railway truck heavy haul transport and uses and require, under prerequisite that energy disperser and lorry fitted position are consistent, designed by the Rational Parametersization of friction system, elastic system, the structure optimization of casing, supporting seat and outer stationary plates, reduce energy disperser weight, improve body structure intensity, improve anufacturability.
The Technique performance parameter of the utility model energy disperser is: rated travel 83mm, rated impedance power 2270kN, and capacity 50kJ, absorptivity is not less than 80%.
The scheme of the application comprises three parts: (one) keystone configuration and principle of work; (2) friction system, the design of elastic system Rational Parametersization; (3) structure optimization of casing, supporting seat and outer stationary plates.
(1) keystone configuration and principle of work
Energy disperser in the application is dry friction and steel spring pattern, and energy disperser is made up of casing, friction system and elastic system.Friction system is made up of outer stationary plates, center wedge, swash plate, side voussoir, supporting seat, dynamic plate; Elastic system is made up of interior coil spring, outer coil spring, retracing spring; Miscellaneous part limited location pin 91 and chafing strip 92.Preferably, this chafing strip 92 is copper bar.
The principle of work of the application's energy disperser is as follows: external impact force can be transmitted by two kinds of modes, and one is by from plate → center wedge 40 → side voussoir 50 → swash plate 70 (power is worn to casing by the support rim of both sides by swash plate 70) and supporting seat 20 → interior coil spring 31 and outer coil spring 32; Another kind of by dynamic plate 60 → swash plate 70 and outer stationary plates 80 → casing 10.External impact force is reached vehicle rear draft lug by casing 10.
In external impact force transmittance process, friction force does work on center wedge 40 and side voussoir 50, side voussoir 50 and swash plate 70, dynamic plate 60 and swash plate 70, dynamic contact surface between plate 60 and outer stationary plates 80, consume the energy that external impact force produces, thus play the effect relaxing impact kinetic energy.
After preventing the effect of greater impact load, cause energy disperser in Recovery Process stuck because mutual crimp produces larger adhesive ability between friction element, add retracing spring 93.
The application arranges copper bar (chafing strip 92) between swash plate 70 and side voussoir 50, prevents contact surface under the effect of super large load, producing improper abrasion.
Locating dowel pin 91, when energy disperser dispatches from the factory assembling, is installed on casing 10, and the stroke of restriction center wedge 40, is convenient to entrucking.
(2) friction system, the design of elastic system Rational Parametersization
(1) parameter designing of friction system
The friction system of the application's scheme, compared with existing dry friction type energy disperser, has redesigned the parameter of friction system, has improve the ability of friction working in friction system.
Angle between the contact surface of center wedge 40 and side voussoir 50 and vertical plane should control at 35 ° ~ 50 °, angle between the contact surface of side voussoir 50 and swash plate 70 and vertical plane should control at 3 ° ~ 6 °, and the angle between the contact surface of side voussoir 50 and supporting seat 20 and horizontal surface should control at 20 ° ~ 30 °.The friction elements such as center wedge 40, side voussoir 50, swash plate 70, dynamic plate 60, outer stationary plates 80 and supporting seat 20 need adopt precision forging technology manufacture, and need carry out bulk heat treatment, superficial hardness should reach more than 45HRC.
(2) parameter designing of elastic system
The utility model scheme, by redesigning the parameter of friction system, elastic system, is meeting rated travel 83mm, rated impedance power 2270kN, capacity 50kJ, under absorptivity is not less than the condition of the Technique performance parameter of 80%, is reducing the weight of whole energy disperser.
(3) structure optimization of casing, supporting seat and outer stationary plates
(1) casing
The draft gear housing of the application, is shown in Fig. 3, and top is box-shaped, and bottom is dolioform, adopts airflow design from bottom box type construction to whole bottom half, good looking appearance, generous.
Compared with existing dry friction type draft gear housing, the buffer tank intracoelomic cavity of the application eliminates 4 carrying muscle, and see Fig. 3, adopt the carrying of casing integral structure, improve longitudinal force and transmit situation, wall is smooth-going, is beneficial to process forming.
Existing dry friction type draft gear housing carrying convex shoulder is cantilever beam structure, and see Fig. 1 and Fig. 2, root easily causes stress to concentrate.The draft gear housing carrying convex shoulder of the application is the part of casing wall, sees Fig. 3, and this design goal is to utilize casing integral structure to transmit external impact force, can better by external impact force by buffer transfer to vehicle rear draft lug; Meanwhile, this design improves structural strength and the reliability of casing.
The bottom of the body side of the application's energy disperser is provided with 2 auxiliary holes, is convenient to manufacture.For some outdoor storing places, auxiliary hole plays a role in the drainage.
(2) supporting seat
The energy disperser supporting seat of the application, compared with existing dry friction type energy disperser supporting seat, carry out the optimal design of appearance profile, in conjunction with the structural development of cabinets cavity, make the fit dimension of draft gear housing internal face and supporting seat appearance profile more reasonable, greatly reduce the possibility occurring clamping stagnation in energy disperser utilization process.
(3) outer stationary plates
The outer stationary plates of the application's energy disperser, compared with existing dry friction type energy disperser, devises guide groove structure, sees Fig. 6.Guide groove ensure that the area of contact between dynamic plate and outer stationary plates, ensure that friction face degree of utilization, avoids dynamic plate to offset, and produces unnecessary abrasion between casing.
The beneficial effect that technical scheme is brought:
(1) energy disperser quality of the present utility model is light, is beneficial to and reduces lorry deadweight, improve load-carrying, improve cargo conveyance capacity, for railway transportation brings larger economic benefit;
(2) energy disperser of the present utility model has good margin of strength and buffer capacity, can meet railway heavy haul transport requirement.
(3) the utility model good looking appearance, generous.During the forge piece designs such as casing, supporting seat, outer stationary plates, take into full account process characteristic, made the utility model have good anufacturability, be convenient to batch manufacturing that there is good commercial value.
(4) energy disperser fitted position of the present utility model is consistent with the energy disperser fitted position of railway truck, and interchangeability is good.
Technique performance parameter for the utility model realizes: rated travel 83mm, rated impedance power 2270kN, capacity 50kJ, absorptivity is not less than 80%.
Key problem in technology point of the present utility model and wish protection point:
(1) integral structure of energy disperser, is embodied in the mechanism that of being made up of all parts can realize cushioning, absorbing longitudinal impact force;
(2) setting parameter of elastic system, is mainly reflected in the mechanics parameters of interior coil spring, outer coil spring and restoring spring;
(3) outer stationary plates, is embodied in the guide groove structure of outer stationary plates;
(4) setting parameter of friction system, is mainly reflected in the geometric parameter of each parts of friction system;
(5) casing, being embodied in top is box-shaped, and bottom is swelling-waist shape, and auxiliary hole is arranged at bottom, and carrying convex shoulder is a part for casing wall, and cabinets cavity wall is without carrying muscle.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (11)
1. an energy disperser, comprise casing (10) and the friction component be arranged in described casing (10) and elastic parts, described casing (10) comprises the first casing section (11) and the second casing section (12) that axially connect along it, described friction component is arranged in described first casing section (11), and described elastic parts is arranged in described second casing section (12); It is characterized in that, in the junction of described first casing section (11) and described second casing section (12), the internal diameter of described second casing section (12) is less than the internal diameter of described first casing section (11) to form support rim (13), and described friction component is supported on described support rim (13).
2. energy disperser according to claim 1, is characterized in that, the upper end of described second casing section (12) tilts towards the inner side of described casing (10) to form described support rim (13).
3. energy disperser according to claim 1, it is characterized in that, described elastic parts comprises supporting seat (20) and elastic component (30), described supporting seat (20) is arranged between described elastic component (30) and described friction component movably, and described elastic component (30) is connected between the diapire of described casing (10) and described supporting seat (20).
4. energy disperser according to claim 3, it is characterized in that, described elastic component (30) is made up of interior coil spring (31) and outer coil spring (32), and described outer coil spring (32) is arranged on the outside of described interior coil spring (31).
5. energy disperser according to claim 3, it is characterized in that, the inwall of described second casing section (12) is provided with position-limited trough (14), and described supporting seat (20) being provided with the spacing preiection (21) matched with described position-limited trough (14), described spacing preiection (21) is positioned at described position-limited trough (14).
6. energy disperser according to claim 5, it is characterized in that, two relative sidewalls of described second casing section (12) are provided with described position-limited trough (14), and described supporting seat (20) are provided with and position-limited trough described in each (14) spacing preiection (21) one to one.
7. energy disperser according to claim 5, is characterized in that, described elastic component (30) be positioned at described position-limited trough (14) at least partially.
8. energy disperser according to claim 1, it is characterized in that, described friction component comprises center wedge (40) and is arranged on the side voussoir (50) in described center wedge (40) outside, and impulsive force is delivered to described casing (10) by described side voussoir (50) by described center wedge (40).
9. energy disperser according to claim 8, it is characterized in that, described friction component also comprises dynamic plate (60), described dynamic plate (60) is arranged on the outside of described side voussoir (50), and one end of described dynamic plate (60) is connected with described elastic parts the transmission realizing impulsive force between described friction component and described elastic parts.
10. energy disperser according to claim 9, it is characterized in that, described friction component also comprises swash plate (70) and outer stationary plates (80), described swash plate (70) is arranged between described dynamic plate (60) and described side voussoir (50), and described outer stationary plates (80) is arranged between the inwall of described dynamic plate (60) and described first casing section (11).
11. energy dispersers according to claim 10, is characterized in that, described outer stationary plates (80) are provided with guide groove (81), described dynamic plate (60) be positioned at described guide groove (81) at least partially.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520308244.6U CN204586910U (en) | 2015-05-13 | 2015-05-13 | Energy disperser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520308244.6U CN204586910U (en) | 2015-05-13 | 2015-05-13 | Energy disperser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204586910U true CN204586910U (en) | 2015-08-26 |
Family
ID=53923092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520308244.6U Active CN204586910U (en) | 2015-05-13 | 2015-05-13 | Energy disperser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204586910U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110654415A (en) * | 2018-06-29 | 2020-01-07 | 比亚迪股份有限公司 | Coupler buffer and vehicle with same |
-
2015
- 2015-05-13 CN CN201520308244.6U patent/CN204586910U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110654415A (en) * | 2018-06-29 | 2020-01-07 | 比亚迪股份有限公司 | Coupler buffer and vehicle with same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101715402B (en) | Draft gear assembly comprising a yoke, an elastomeric spring and a friction mechanism | |
| US10011287B2 (en) | Bogie for high-speed railway vehicle | |
| CN105015570A (en) | Straddle type monorail train and end chassis thereof | |
| CN2910706Y (en) | Buffer unit of tight lock couplers | |
| CN204399181U (en) | Rail vehicle unit | |
| CN201165233Y (en) | Lorry bogie axle box shock-absorbing device, bogie and lorry thereof | |
| CN204586910U (en) | Energy disperser | |
| CN203766807U (en) | Aluminum alloy casting sleeper beam of motor train unit | |
| CN201863858U (en) | Modular sleeper beam structure of passenger train | |
| CN105015571A (en) | Chassis of low-floor trailer body | |
| CN203888816U (en) | 30-ton axle load electric locomotive two-axle steering frame | |
| CN204801805U (en) | Single track train of a formula of striding and tip chassis thereof | |
| CN85107178B (en) | Railway conpler carrier retention system | |
| CN204567536U (en) | Front anticollision beam of automobile | |
| CN210082850U (en) | Shock-proof steering wheel structure of heavy-load AGV trolley | |
| CN109278784B (en) | Bogie for semitrailer highway-railway combined transport dual-purpose truck | |
| CN203485931U (en) | Coupler | |
| CN109334699B (en) | Traction plate structure of traction coupling device of highway and railway dual-purpose truck | |
| CN102717811A (en) | Locomotive three-axle bogie with balancing beams | |
| CN102050126B (en) | Modular sleeper beam structure for railway train | |
| CN113306608A (en) | Three-dimensional damping transfer box and transfer trolley using same | |
| CN201347084Y (en) | Bogie diamond resistant structure for railway freight car | |
| CN207433453U (en) | A kind of bumper | |
| CN201343036Y (en) | Novel shock-absorbing and labor-saving tram mine car | |
| CN204020888U (en) | For the gib head car of inclined plane transport |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 161002 Qigihar City, Heilongjiang province Tiefeng District Plant Road No. 36 Patentee after: CRRC QIQIHAR VEHICLE CO., LTD. Address before: 161002 Qigihar City, Heilongjiang province Tiefeng District Plant Road No. 36 Patentee before: Qiqihar Railway Rolling Stock Co., Ltd. |