CN102080983A - Weighing, spring regulating and detecting device for bogey of railway locomotive - Google Patents
Weighing, spring regulating and detecting device for bogey of railway locomotive Download PDFInfo
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- CN102080983A CN102080983A CN2009102467012A CN200910246701A CN102080983A CN 102080983 A CN102080983 A CN 102080983A CN 2009102467012 A CN2009102467012 A CN 2009102467012A CN 200910246701 A CN200910246701 A CN 200910246701A CN 102080983 A CN102080983 A CN 102080983A
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Abstract
The invention discloses a weighing, spring regulating and detecting device for a bogey of a railway locomotive. The device comprises a hydraulic system and a detection system, wherein in the hydraulic system, a mechanical component is provided with a guide rail, a weighing rail and a load beam, the load beam is arranged above the weighing rail, the guide rail is installed at the front side of the weighing rail, the weighing rail can move up and down under the action of the hydraulic system, and the load beam can move up and down under the action of the hydraulic system and can pressurize the bogey through a hydraulic cylinder installed on the load beam; and the detection system comprises multiple wheel load measuring units, each wheel load measuring unit respectively corresponds to the wheel of the bogey, each wheel load measuring unit is provided with a pressure sensor, the wheel load measuring units are arranged below the weighing rail, and the wheel load measuring units can horizontally move along the direction parallel to the weighing rail under the action of the hydraulic system. In the invention, the whole load pressure is implemented on the bogey after the bogey is assembled, and then wheel load detection is carried out, so as to inhibit the axle load transfer in the running process of the locomotive to the fullest extent.
Description
Technical field
The invention relates to a kind of accent spring pick-up unit of weighing of railway locomotive bogie.
Background technology
Along with of the continuous development of transportation by railroad cause, especially, more and more high to the requirement of locomotive operation quality for adapting to the speed-raising requirement to high speed, heavily loaded direction.Bogie is as concerning the most important parts of electric power locomotive operation, it not only supports the total weight of locomotive, when operation, bear simultaneously very big static load, tractive force, damping force and produce by curve, track switch, rail joint each to firmly effect of action, therefore as seen, the quality of bogie performance and state is directly connected to the safety of driving.
At present, existing locomotive is weighed and is transferred in the spring testing process, and, only do not detect and measure complete vehicle weight the bogie accent spring of weighing, and according to measurement data and be that spring adds adjusting pad to one rule of thumb, till the wheel solid axle heavily meets the requirements.Adopt traditional detection technique and research technique, and weigh based on the locomotive of artificial experience operation and to transfer the spring detection method, inefficiency not only, and can not accurately weigh to locomotive and transfer spring to detect, make the Locomotive Axle Load maldistribution, the axle that can not effectively suppress in the locomotive operation process heavily shifts, and it is destroyed to cause wheel drive track to stick together condition, limit the performance of tractive force, even threatened traffic safety.
In view of this, I,, develop weighing of railway bogie of the present invention finally and transfer the spring detection technique through arduous research and development for overcoming the above-mentioned defective that exists in the technology according to the experience and knowledge of being engaged in this area work for many years.
Summary of the invention
The objective of the invention is, provide weighing of a kind of railway locomotive bogie to transfer the spring pick-up unit, it to the laggard road wheel re-detection of the whole on-load pressure of bogie, heavily shifts with the axle that suppresses as much as possible in the locomotive operation process after the bogie assembling is finished.
Above-mentioned purpose of the present invention can adopt following technical proposal to realize,
The spring pick-up unit is transferred in weighing of a kind of railway locomotive bogie, and it comprises: hydraulic system; Mechanical part, it has approach rail, weighing-rail and loading beam, described loading beam is arranged on the top of weighing-rail, described approach rail is installed in the front side of weighing-rail, described weighing-rail can move up and down under the effect of described hydraulic system, described loading beam can move up and down under the effect of described hydraulic system, and described bogie is exerted pressure; Detection system, it comprises a plurality of wheel load measuring units, each wheel load measuring unit is corresponding with the wheel of described bogie respectively, each wheel load measuring unit has pressure transducer, described wheel load measuring unit is arranged on the below of weighing-rail, and described wheel load measuring unit can move horizontally along the direction that is parallel to weighing-rail under the effect of described hydraulic system.
In preferred embodiment, described mechanical part also comprises the measuring unit guide rail, and measuring unit guide rail and described weighing-rail are parallel to each other, and described wheel load measuring unit can move horizontally along the direction of measuring unit guide rail under the effect of hydraulic system.
In preferred embodiment, described mechanical part also comprises two groups of columns, and described loading beam is connected between two groups of columns, and can move up and down along column.
In preferred embodiment, described hydraulic system comprises push-and-pull positional cylinder, load cylinder, first hoist cylinder and second hoist cylinder; Described wheel load measuring unit can move horizontally under the effect of push-and-pull positional cylinder, described weighing-rail can move up and down under the effect of described first hoist cylinder, described loading beam can move up and down under the effect of described second hoist cylinder, after loading beam descended, the described load cylinder that is installed on the loading beam was exerted pressure to described bogie.
In preferred embodiment, each described wheel load measuring unit has the drum type piece, and under detected state, the wheel correspondence of described bogie is placed on the described drum type piece.
Described drum type piece has two cylindrical roller near a side of described weighing-rail, has a recess, the wheel tread of described bogie to drop on the recess place of drum type piece between two cylindrical roller and contacts with two cylindrical roller lines.
In preferred embodiment, described detection system also comprises a plurality of inboards apart from detecting unit, and each inboard comprises one group of range sensor apart from detecting unit, its be used to detect described bogie each take turns the distance between the two wheel medial surfaces.
In preferred embodiment, described detection system also comprises a plurality of wheelbase detecting units, and each wheelbase detecting unit comprises one group of grating chi, and it is used to detect the distance between the adjacent diaxon on the described bogie
Characteristics of the present invention and advantage are:
1, this device not only can guarantee each designing requirement of bogie assembling coincidence pattern, and can further improve the bogie performance, and the axle that suppresses to greatest extent in the locomotive operation process heavily shifts, and keeps wheel drive track to stick together condition effectively;
2, it has guaranteed that car body and bogie all possess interchangeability, thereby prolongs the serviceable life that makes bogie assemble each parts;
3, this Device Testing method is easy and simple to handle, both improves the quality of products, guaranteed traffic safety, reduces manufacturing cost again, has improved production efficiency;
4, the technological process of this device is that bogie is reorganized and outfit, location, offered load, detection, cushioning transfer spring, calibrating etc.;
5, it is after the bogie assembling is finished, adjust detecting behind the whole bogie on-load pressure, can detect the performance that turns to after integral body is assembled, and the assembling of traditional bogie is only matched adjustment to spring before assembling, can not effectively embody the performance state under the load condition;
6, it can adopt advanced numerical control experiment of weighing platform, and the location is accurate, and load loads accurately evenly, the accurate bogie characteristic under the reflected load state after the loading, and can calculate the thickness of adjusting pad automatically, easy and simple to handle, reduce the duplication of labour, help large-scale production;
7, it not only can use in the locomotive manufacture process, also can be widely used in effectively analyzing the principal element of wheel rim of locomotive eccentric wear in the locomotive inspection and repair work, and corresponding adjustment parameter is provided;
8, it can overcome the defective that traditional handicraft exists, and realizing that car body and bogie junction load rationally distribute and being undertaken two by simulation loading is the accurate effective way of accent spring automatically;
9, it not only can be applied to two-axle bogie, also can be applicable to three-axle bogie, is that the locomotive of rubber metal pad also has practicality for project organization two.
10, its adoptable numerical control experiment of weighing platform can make the operator have no right to change and detect data by the authority setting to operating system, fundamentally stops the behavior of playing tricks, thereby solves the problem that produces unacceptable product in the bogie assembling.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the perspective view one of pick-up unit of the present invention;
Fig. 2 is the perspective view two of pick-up unit of the present invention;
Fig. 3 is that the master of pick-up unit of the present invention looks synoptic diagram;
Fig. 4 is the schematic top plan view of pick-up unit of the present invention;
Fig. 4 A is the A-A line diagrammatic cross-section along Fig. 4;
Fig. 4 B is the B-B line diagrammatic cross-section along Fig. 4;
Fig. 5 is the schematic side view of pick-up unit of the present invention;
Fig. 5 A is the C portion enlarged diagram of Fig. 5;
Fig. 6 is that the master who shows three-axle bogie looks synoptic diagram;
Fig. 7 is the schematic top plan view that shows three-axle bogie;
Fig. 8 is the schematic side view that shows three-axle bogie;
Fig. 8 A is the D portion enlarged diagram of Fig. 8.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Shown in Fig. 1 to Fig. 8 A, the present invention proposes weighing of a kind of railway locomotive bogie and transfer the spring pick-up unit, it comprises mechanical part, hydraulic system and detection system 4.Mechanical part has approach rail 14, weighing-rail 11 and loading beam 12, and described loading beam 12 is arranged on the top of weighing-rail 11, and the effect of approach rail is to be convenient to bogie is introduced weighing-rail; Described weighing-rail 11 can move up and down under the effect of hydraulic system, and described loading beam 12 can move up and down under the effect of hydraulic system, and described bogie is exerted pressure.Detection system 4 comprises a plurality of wheel load measuring units 41, each wheel load measuring unit is corresponding with the wheel of described bogie respectively, each wheel load measuring unit has pressure transducer, described wheel load measuring unit 41 is arranged on the below of weighing-rail, described wheel load measuring unit can move horizontally along the direction that is parallel to weighing-rail 11 under the effect of described hydraulic system, to adapt to the bogie of different size.
In use, weighing-rail 11 rises earlier, make it highly be higher than the height of wheel load measuring unit, bogie the wheel of bogie (specifically be to) directly can be dropped on the approach rail 14 after lifting devices such as overhead traveling crane are sling bogie, bogie pushes the relevant position of weighing-rail 11 and makes wheel to roughly corresponding wheel load measuring unit 41 respectively from approach rail 14 again; Then, weighing-rail 11 descends, and makes its height that highly is lower than the wheel load measuring unit, thereby the wheel of bogie is dropped on the wheel load measuring unit 21; Then, loading beam 12 moves down, and beam 12 to be loaded drops to correct position, hydraulic system is exerted pressure to bogie, shown in arrow among Fig. 7, the position that loading beam is exerted pressure can be corresponding the position of secondary spring 22 seat surfaces of living in of bogie, promptly locomotive car body is to the position of the bogie application of force; Wherein, secondary spring 22 is removable, and the pressure of loading beam is applied directly on the seat surface of bogie; Required applied pressure generally can be provided with according to the weight of locomotive and the quantity of bogie, and can consider to be connected parts weight with bogie owing to detecting secondary spring and the locomotive car body removed; In other words, because engine truck number difference applies the power difference, the engine truck pressure that two two-axle bogies (perhaps three-axle bogie) are arranged is half of car body weight; The pressure transducer of wheel load measuring unit 41 detects the force value that each wheel bore of bogie, if the pressure value difference that each wheel shows is not in scope of design, promptly do not reach the qualified requirement of wheel load, then can adjust, so that the force value that each pressure transducer shows is in allowing certain error range the working depth of the spring of bogie (generally be spring 23).Wherein, be that the mode that spring is adjusted can be to one, be the pad of respective thickness of packing under the spring one.Whether one is to add pad on the spring, qualified to detect wheel load through repeating loading, treats that bogie adjustment detection finishes, move on the loading beam 12, weighing-rail 11 rises, and the height of weighing-rail 11 should be higher than the height of wheel load measuring unit, and bogie was pushed into approach rail 14 and broke away from pick-up units this moment.
Specifically be, because bogie generally comprises two axle truck and three-axle bogie.It is right that two axle truck has two wheels, i.e. four wheels.It is right that three-axle bogie has three wheels, i.e. six wheels.Therefore, pick-up unit can comprise four wheel load measuring units or six wheel load measuring units, if four wheel load measuring units then make pick-up unit can only detect two axle truck, if six wheel load measuring units then make pick-up unit can detect two axle truck, also can detect three-axle bogie.
Wherein, weighing-rail 11 and approach rail 14 are not on a line, and shown in Fig. 4 A, approach rail 14 can be installed on the mattess G.Cooperate shown in Fig. 8, the 8A, the wheel rim N of the wheel of bogie, it contacts with weighing-rail 11 and rolls; The tread M of the wheel of bogie, it contacts with approach rail 14 and rolls.In addition, after weighing-rail 11 descended, the tread M of wheel dropped on the wheel load measuring unit.And the xsect of approach rail 14 can be the L type, shown in Fig. 5 A.
In an embodiment of the invention, described mechanical part also comprises measuring unit guide rail 15, and measuring unit guide rail 15 is parallel to each other with weighing-rail 11, and wheel load measuring unit 41 can move horizontally along the direction of measuring unit guide rail 15 under the effect of hydraulic system.
Described mechanical part also comprises two groups of columns 13, and described loading beam 12 is connected between two groups of columns 13, and can move up and down along column 13.
In an embodiment of the invention, described hydraulic system comprises push-and-pull positional cylinder 31, load cylinder 32, first hoist cylinder 34 and second hoist cylinder 33.Described wheel load measuring unit can move horizontally along measuring unit guide rail 15 under the effect of push-and-pull positional cylinder, because bogie to be checked might be a two axle truck, it also might be three-axle bogie, therefore, each wheel load measuring unit need move horizontally, with the wheel that adapts to two axle truck or three-axle bogie to the position; Wherein, be not that each wheel load measuring unit all needs corresponding push-and-pull positional cylinder, for example, bogie is if three-axle bogie, and it is right that it has three wheels, then to three groups of wheel load measuring units should be arranged, every group of wheel load measuring unit corresponding respectively each take turns rightly, so wherein one group of wheel load measuring unit can be located, and does not promptly need the push-and-pull positional cylinder, other two groups then connect the push-and-pull positional cylinder respectively, also are like this for two axle truck; Certainly, also can make each wheel load measuring unit all connect a push-and-pull positional cylinder.Described weighing-rail 11 can move up and down under the effect of described first hoist cylinder 34, described loading beam 12 can move up and down under the effect of described second hoist cylinder 33, after loading beam 12 drops to assigned address, described load cylinder 32 drives 12 pairs of described bogies of loading beams and exerts pressure, and specifically is that the piston of load cylinder stretches out downwards and exerts pressure; Wherein, the bottom of loading beam 12 herein can be equipped with two load cylinders that extend downwards, and these two residing positions of load cylinder promptly can be force application location, and these two load cylinders can be distinguished the position of the secondary spring 22 of both sides, corresponding bogie top.
Each described wheel load measuring unit has the drum type piece, and under detected state, the wheel tread correspondence of described bogie drops on described drum type piece top.Wherein, described drum type piece has two cylindrical roller in the side near weighing-rail 11, a recess is arranged between two cylindrical roller, and the wheel tread of bogie drops on the recess place of drum type piece and contacts with two roller lines, and the drum type piece can be automatically at wheel tread location centering.Therefore, when weighing-rail 11 declines, its height should be lower than the height of the cylindrical roller of wheel load measuring unit 41, thereby the wheel of bogie is dropped on the cylindrical roller of wheel load measuring unit 41 21.
In an embodiment of the invention, described detection system 4 comprises that also a plurality of inboards are apart from detecting unit, each inboard comprises one group of range sensor 42 (i.e. two range sensors) apart from detecting unit, its be used to detect described bogie each take turns distance L between the two right wheel medial surfaces.Wherein, described range sensor can be pneumatic detecting instrument or laser side apart from instrument, behind the bogie location, range sensor by with wheel to contacting the detection of finishing distance between backs of wheel flanges automatically.
Described detection system 4 also comprises a plurality of wheelbase detecting units, and each wheelbase detecting unit comprises one group of grating chi 43, also can be other optical grating detecting instrument, can certainly be leveling ruler.Grating chi 43 can be installed on the measuring unit guide rail 15, also can be made of one with it, and grating chi 43 is used to detect the distance H between the adjacent diaxon on the described bogie.Wherein, after the bogie location loads, to both sides,, detect wheelbase automatically, certainly, also can detect the wheel shaft depth of parallelism and the wheel shaft angle of attack simultaneously by grating head moving on the grating chi at steering framing wheel.
Wherein, the bogie of not all locomotive all need carry out the inboard apart from detecting and the wheelbase detection, and it carries out respective detection as required.
In an embodiment of the invention, described pick-up unit also can comprise electric control system 5, described electric control system 5 is used to control the action of described hydraulic system, it specifically is each cylinder action of controlled hydraulic system, electric control system 5 also is used to control each sensor, to realize the automatic detection of detection system 4.Wherein, the result that each sensor detected can be shown in or import computing machine, so that carry out data processing, it is the spacer thickness of spring required increase when adjusting that pick-up unit also can be informed in one according to the result that computer data is handled.
The above only is several embodiments of the present invention, and those skilled in the art can carry out various changes or modification to the embodiment of the invention and do not break away from the spirit and scope of the present invention according to application documents are disclosed.
Claims (8)
1. weighing of a railway locomotive bogie transferred the spring pick-up unit, it is characterized in that described device comprises:
Hydraulic system;
Mechanical part, it has approach rail, weighing-rail and loading beam, described loading beam is arranged on the top of weighing-rail, described approach rail is installed in the front side of weighing-rail, described weighing-rail can move up and down under the effect of described hydraulic system, described loading beam can move up and down under the effect of described hydraulic system, and described bogie is exerted pressure;
Detection system, it comprises a plurality of wheel load measuring units, each wheel load measuring unit is corresponding with the wheel of described bogie respectively, each wheel load measuring unit has pressure transducer, described wheel load measuring unit is arranged on the below of weighing-rail, and described wheel load measuring unit can move horizontally along the direction that is parallel to weighing-rail under the effect of described hydraulic system.
2. the spring pick-up unit is transferred in weighing of railway locomotive bogie according to claim 1, it is characterized in that, described mechanical part also comprises the measuring unit guide rail, measuring unit guide rail and described weighing-rail are parallel to each other, and described wheel load measuring unit can move horizontally along the direction of measuring unit guide rail under the effect of hydraulic system.
3. the spring pick-up unit is transferred in weighing of railway locomotive bogie according to claim 2, it is characterized in that described mechanical part also comprises two groups of columns, and described loading beam is connected between two groups of columns, and can move up and down along column.
4. transfer the spring pick-up unit according to weighing of any described railway locomotive bogie of claim 1-3, it is characterized in that described hydraulic system comprises push-and-pull positional cylinder, load cylinder, first hoist cylinder and second hoist cylinder; Described wheel load measuring unit can move horizontally under the effect of push-and-pull positional cylinder, described weighing-rail can move up and down under the effect of described first hoist cylinder, described loading beam can move up and down under the effect of described second hoist cylinder, after loading beam descended, the described load cylinder that is installed on the loading beam was exerted pressure to described bogie.
5. the spring pick-up unit is transferred in weighing of railway locomotive bogie according to claim 1, it is characterized in that each described wheel load measuring unit has the drum type piece, and under detected state, the wheel correspondence of described bogie is placed on the described drum type piece.
6. the spring pick-up unit is transferred in weighing of railway locomotive bogie according to claim 5, it is characterized in that, described drum type piece has two cylindrical roller in the side near described weighing-rail, a recess is arranged between two cylindrical roller, and the wheel tread of described bogie drops on the recess place of drum type piece and contacts with two cylindrical roller lines.
7. transfer the spring pick-up unit according to weighing of any described railway locomotive bogie of claim 1-3, it is characterized in that, described detection system comprises that also a plurality of inboards are apart from detecting unit, each inboard comprises one group of range sensor apart from detecting unit, its be used to detect described bogie each take turns the distance between the two wheel medial surfaces.
8. transfer the spring pick-up unit according to weighing of any described railway locomotive bogie of claim 1-3, it is characterized in that, described detection system also comprises a plurality of wheelbase detecting units, each wheelbase detecting unit comprises one group of grating chi, and it is used to detect the distance between the adjacent diaxon on the described bogie.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102467012A CN102080983A (en) | 2009-11-26 | 2009-11-26 | Weighing, spring regulating and detecting device for bogey of railway locomotive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102467012A CN102080983A (en) | 2009-11-26 | 2009-11-26 | Weighing, spring regulating and detecting device for bogey of railway locomotive |
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| CN102080983A true CN102080983A (en) | 2011-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102467012A Pending CN102080983A (en) | 2009-11-26 | 2009-11-26 | Weighing, spring regulating and detecting device for bogey of railway locomotive |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102538928A (en) * | 2011-11-24 | 2012-07-04 | 中铁工程设计院有限公司 | Automatic aligning and weighing system for locomotive bogie |
| CN105136488A (en) * | 2015-08-05 | 2015-12-09 | 北京新联铁科技股份有限公司 | Device and method for testing bogie of maglev train |
| CN105371934A (en) * | 2015-09-29 | 2016-03-02 | 南车南京浦镇车辆有限公司 | Low-floor tramcar bogie wheel load reduction test tool |
| CN105823541A (en) * | 2016-03-11 | 2016-08-03 | 西南交通大学 | Flexible weighing method and one-dimensional spacer adding method for railway vehicle body |
| CN106768236A (en) * | 2016-11-30 | 2017-05-31 | 中车青岛四方车辆研究所有限公司 | Rail vehicle is weighed and adjusts spring and rate of wheel load reduction test system |
| CN107036695A (en) * | 2017-04-05 | 2017-08-11 | 中车青岛四方机车车辆股份有限公司 | Train weighing method and device |
| CN111366384A (en) * | 2020-03-28 | 2020-07-03 | 廊坊智通机器人系统有限公司 | Detection and adjustment equipment for bogie of high-speed rail and motor car |
-
2009
- 2009-11-26 CN CN2009102467012A patent/CN102080983A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102538928A (en) * | 2011-11-24 | 2012-07-04 | 中铁工程设计院有限公司 | Automatic aligning and weighing system for locomotive bogie |
| CN105136488A (en) * | 2015-08-05 | 2015-12-09 | 北京新联铁科技股份有限公司 | Device and method for testing bogie of maglev train |
| CN105136488B (en) * | 2015-08-05 | 2018-10-02 | 北京新联铁集团股份有限公司 | A kind of experimental rig and its detection method for maglev train bogie detection |
| CN105371934A (en) * | 2015-09-29 | 2016-03-02 | 南车南京浦镇车辆有限公司 | Low-floor tramcar bogie wheel load reduction test tool |
| CN105371934B (en) * | 2015-09-29 | 2018-03-13 | 中车南京浦镇车辆有限公司 | Low-floor tramcar bogie wheel unloading test tool |
| CN105823541A (en) * | 2016-03-11 | 2016-08-03 | 西南交通大学 | Flexible weighing method and one-dimensional spacer adding method for railway vehicle body |
| CN105823541B (en) * | 2016-03-11 | 2019-02-26 | 西南交通大学 | Vehicle body of railway vehicle flexibility weighing method and one-dimensional cushioning method |
| CN106768236A (en) * | 2016-11-30 | 2017-05-31 | 中车青岛四方车辆研究所有限公司 | Rail vehicle is weighed and adjusts spring and rate of wheel load reduction test system |
| CN106768236B (en) * | 2016-11-30 | 2019-06-18 | 中车青岛四方车辆研究所有限公司 | Spring and rate of wheel load reduction test macro are adjusted in rail vehicle weighing |
| CN107036695A (en) * | 2017-04-05 | 2017-08-11 | 中车青岛四方机车车辆股份有限公司 | Train weighing method and device |
| CN111366384A (en) * | 2020-03-28 | 2020-07-03 | 廊坊智通机器人系统有限公司 | Detection and adjustment equipment for bogie of high-speed rail and motor car |
| CN111366384B (en) * | 2020-03-28 | 2022-02-11 | 廊坊智通机器人系统有限公司 | Detection and adjustment equipment for bogie of high-speed rail and motor car |
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Application publication date: 20110601 |