CN100537323C - Tension rod type hanging and height adjusting mechanism - Google Patents
Tension rod type hanging and height adjusting mechanism Download PDFInfo
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- CN100537323C CN100537323C CNB2006101041381A CN200610104138A CN100537323C CN 100537323 C CN100537323 C CN 100537323C CN B2006101041381 A CNB2006101041381 A CN B2006101041381A CN 200610104138 A CN200610104138 A CN 200610104138A CN 100537323 C CN100537323 C CN 100537323C
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Abstract
The tie rod type hanging and height adjustment mechanism of the invention adopts a special separate type design in the vertical direction of the movement between a linear motor and a truck frame, and the tie rod type hanging and height adjustment mechanism is arranged at the joint between the linear motor and a supporting beam. An elastic connection between the supporting beam and the axle box of front and rear wheel pairs is adopted to provide the hanging elasticity of the linear motor and realize the bending and twisting of the truck within an allowable range. When height adjustment is required, the linear motor can be adjusted through the height adjustment mechanism to enable the clearance between the linear motor and a rail induction board to meet design requirements. That is to say, the linear motor can be adjusted to any required height within the wheel wear range. The invention not only realizes simple and stepless adjustment of the linear motor but also reduces the maintenance time of railway vehicles to the farthest degree. Additionally, the invention also ensures the tractive of the linear motor on the truck and the high-speed running of railway vehicles.
Description
Technical field
The present invention relates to a kind of novel adjusting mechanism that is used for rail vehicle truck, specifically linear electric motors are achieved a fixed connection by tension rod type hanging and height adjustment mechanism.
Background technology
Along with the Chinese society rapid economy development, greatly developing of comprehensive speed-raising of main line railway and urban track traffic is imperative.The high-speed cruising of guideway vehicle has proposed higher designing requirement to the stability of bogie structure and in-use performance.
The bogie truck of guideway vehicle is a fixing right rigid frame of front and back wheel, adopts in the bogie truck of linear electric motors as traction power existing, and linear electric motors are normally to adopt bolt on the framework of the bogie of car.For the linear electric motors bogie truck, requirement can reduce the vertical amount of movement of linear electric motors with respect to the track tablet as best one can, and requiring integral frame to have certain sink-float amount from the design angle that improves the train traveling comfort, this has just caused the conflicting relation between existing linear electric motors fixed form and the bogie truck fixed connection structure.
Owing to there is the design defect of above-mentioned existing linear electric motors and bogie truck integral connecting structure, make and to wear and tear for a long time and when diminishing when wheel, the vertical height of linear electric motors changes and can't regulate its height randomly, cause vertical between linear electric motors and the track tablet apart from the overshoot scope, thus have influence on linear electric motors to the running velocity of the tractive force of bogie truck, guideway vehicle reduce, the part electric energy consumes meaninglessly.
Summing up above-mentioned speed and the stable problem that influences guideway vehicle is that what the linear electric motors of existing bogie truck adopted is integral connecting structure, can't regulate the vertical height of linear electric motors according to the wheel wear pattern arbitrarily.
Summary of the invention
Tension rod type hanging and the height adjustment mechanism that is used for rail vehicle truck of the present invention, its goal of the invention is to address the above problem and is not enough, and special isolated design is adopted in the motion between linear electric motors and the truck frame on vertical direction, the junction of linear electric motors and support beam is provided with tension rod type hanging and height adjustment mechanism.Between the right axle box of support beam and front and back wheel, take elastic connection way, the elasticity that linear electric motors hang to be provided and to realize the crooked and distortion of bogie truck in allowed band.When needs carry out height adjustment, can realize the adjusting of linear electric motors by its height adjustment mechanism, make its with the track tablet between the gap that adheres to specification of maintenance.Promptly in wheel wear range, linear electric motors can be adjusted to the height of any needs.Both realize simple and easy, the stepless adjustment of linear electric motors, and can shorten safeguarding the time spent of guideway vehicle to greatest extent again.
For achieving the above object, the described main following structure of tension rod type hanging and height adjustment mechanism that is used for rail vehicle truck:
On two right axle boxes of front and back wheel, be respectively arranged with a cross-tie beam;
In the two side ends of described support beam and the junction of axle box, be provided with flexible connection mechanism;
Sidepiece at described support beam is provided with several installing mechanisms;
On fore-and-aft direction, sidepiece at support beam is hung by several vertical pull bars respectively in the two ends that are arranged on the linear electric motors of axle box below;
Be provided with height adjustment mechanism in the end of described vertical pull bar.
As above-mentioned tension rod type hanging and height adjustment mechanism, be applied to each bogie truck of guideway vehicle, linear electric motors all are installed.Each linear electric motors hangs connection by two cross-tie beams and several vertical pull bars of being connected the support beam sidepiece, and the two ends of each support beam across, simultaneously flexibly be installed in same the wheel on two right axle boxes, make linear electric motors be installed in the center of axletree, like this can so that linear electric motors hang the influence that highly is not subjected to vehicle single stage suspension system variant, eliminated any offset load that is produced in the single stage suspension system, only guaranteed in vertical support, and normal wheel can not be restricted side travel and curve.
Be installed in same support beam of taking turns between the right axle box, be provided with the installing mechanism that connects vertical pull bar, hang linear electric motors at the support beam sidepiece, make linear electric motors have bigger vertical stiffness by vertical pull bar at its sidepiece.
Be provided with height adjustment mechanism in the end of described vertical pull bar, height adjustment mechanism can directly regulate the height of linear electric motors by vertical pull bar thus, and does not have any annexation between the rubber nodal point of this height adjustment mechanism and truck frame.Can be according to the abrasion situation of wheel, by regulating described height adjustment mechanism, do not influencing under the prerequisite of support beam at vertical top offset, directly will hang at the vertical pull bar of support beam sidepiece and regulate, thereby drive linear electric motors and realize height adjustment, promptly realize the stepless adjustment of linear electric motors.In wheel wear range, linear electric motors can be adjusted to the height of any needs, make linear electric motors and track tablet keep specified vertical distance.
In the end of vertical pull bar height adjustment mechanism is set, for a person skilled in the art, can takes multiple connection and fastening means.
Be provided with mount pad with vertical pull bar equal number as the sidepiece at support beam, the height adjustment mechanism of vertical pull bar upper end held being supported on mount pad inside simultaneously, the lower end of vertical pull bar directly is connected with linear electric motors.Also height adjustment mechanism can be arranged on the lower end of vertical pull bar, and the upper end of vertical pull bar is connected with support beam directly.
At the flexible connection mechanism that the junction of the two side ends of support beam and axle box is provided with, for a person skilled in the art, can take multiple connection and fastening means.
Can one through hole be set respectively in the two side ends of support beam, described bindiny mechanism is installed in through hole, and bindiny mechanism directly penetrates axle box downwards and fixes.
On fore-and-aft direction, linear electric motors are hung sidepiece at the back and front supporting beam by several vertical pull bars respectively, comprise hanging in the inboard of support beam and hanging the outside at support beam.
The inboard of support beam is meant the relative side of two support beams that front and back wheel is right.
The outside of support beam is meant the opposite side of two support beams that front and back wheel is right.
In order to realize the planeness adjustment of linear electric motors self, and guarantee the homogeneity on vertical height, the vertical pull bar quantity of hanging at the sidepiece of support beam has multiple assembled scheme.
As two support beams that are provided with on same bogie truck, a support beam is hung with two vertical pull bars, and another support beam is hung with three vertical pull bars.One end that can guarantee linear electric motors like this is 2 suspending ways, and the other end is the three-point suspension mode.
By adjusting the vertical height of former and later two support beams, just can adjust the diff-H that linear electric motors make progress front and back wheel the other side.And regulate to adopt the support beam of three-point suspension mode, it is poor in the same the other side of wheel transverse height that makes progress to adjust linear electric motors again.
Based on identical principle of design, except that above-mentioned linear electric motors adopt 5 suspending ways, can also adopt following suspending way:
A support beam is hung with a vertical pull bar, and another support beam is hung with two vertical pull bars at least, an end that is linear electric motors is some suspending ways, the other end is 2 or multiple spot suspending way, could both can adjust linear electric motors diff-H in a longitudinal direction like this, it is poor in the transverse height that the same the other side of wheel makes progress to adjust linear electric motors again, and it has adopted 3 principle of designs that form a plane.
Or a support beam is hung with two vertical pull bars, and another support beam also is hung with two vertical pull bars, is 2 suspending ways thereby form the linear electric motors front and back end;
And the vertical pull bar of greater number hang array mode, but should not design too much yet because too much vertical connection can change the force-bearing situation of vertical pull bar, also make height adjustment become complicated.
Swing in a lateral direction in order to limit described linear electric motors, can between linear electric motors and truck frame, be provided with lateral connecting rod is installed.
Linear electric motors can be by two lateral connecting rod direct connections on described truck frame, described lateral connecting rod has the main body that a drag link body forms, the coupling end of itself and linear electric motors is provided with oscillating bearing, can satisfy the rotation needs of several degree of freedom, and can transmit pulling force and thrust.
The coupling end of lateral connecting rod and truck frame, the rod head of employing metal and building rubber compound material, it can provide the rigidity of design requirement.
By above-mentioned optimal design structure, the stiffness characteristics that described lateral connecting rod possessed can provide the suitable horizontal frequency and the frequency of shaking the head for linear electric motors, thereby avoid resonating between linear electric motors and the bogie truck.
Described two lateral connecting rods can be arranged on the same sides of linear electric motors, also can be separately positioned on the both sides of linear electric motors.
Described rod head can adopt straight-through structure and is connected by having strong market potential with described truck frame.
Described rod head also can adopt gudgeon formula structure and is connected with fastener by gudgeon with described truck frame.
Be the tractive force that produces by linear electric motors to the truck frame transmission, between the vertical and truck frame of linear electric motors, a drawing pull bar is set, described drawing pull bar is installed on the axial location of linear electric motors, makes tractive force to be directly delivered on the framework from linear electric motors.
Described drawing pull bar can be longitudinally fixing linear electric motors, transmit longitudinal traction power and braking force simultaneously.
Described drawing pull bar, having a drag link body is main body, its two ends are provided with the tow attachment of metal and building rubber compound material, and the rigidity of design requirement is provided thus.Longitudinal rigidity can be optimized by above-mentioned drawing pull bar, and then the transfer of vibration between linear electric motors and the compartment, top can be reduced.
Content to sum up, tension rod type hanging and the height adjustment mechanism that is used for rail vehicle truck of the present invention has the following advantages and beneficial effect:
1, adopts isolated design plan between vertical linear electric motors and the framework, linear electric motors are arranged on the axle box below by tension rod type hanging and height adjustment mechanism, have at bogie truck under the situation of up and down elasticity, sink-float, can realize that linear electric motors are not subjected to the influence of elasticity sink-float, guarantee that its height is in allowed band.
2, after wheel wearing and tearing diminish, can carry out stepless adjustment to linear electric motors by height adjustment mechanism, make its with the track tablet between the gap that adheres to specification of maintenance.
3, realize that the linear electric motors suspension is more reasonable, can be easily on vertical, horizontal and vertical all directions the choosing of parameter, make dynamic performance more excellent.
4, be applicable to various types of two axle trucks that guideway vehicle is used, can shorten safeguarding the time spent of guideway vehicle to greatest extent, realize the high-speed cruising of guideway vehicle.
Description of drawings
Fig. 1 is the structural representation of described linear electric motors bogie truck.
Fig. 2 is the local connection diagram of described support beam and axle box.
Fig. 3 is the cross-sectional view of described flexible connection mechanism.
Fig. 4 is described support beam and vertical pull bar bonded assembly scheme drawing.
Fig. 5 is the scheme drawing of described longitudinal traction pull bar.
Fig. 6 is the scheme drawing of described lateral connecting rod.
Fig. 7 is the vertical pull bar comparison diagram of 3 of employings and four-point suspension mode.
As above diagram, front and back wheel is to 1, linear electric motors 2, axle box 3, cross-tie beam 4, mount pad 41, attachment face 42, cross-tie beam 5, vertical pull bar 7, lateral connecting rod 8, drawing pull bar 9, bindiny mechanism 10;
Adjust block 15, head protector 16, baffle plate 17, round pin 18;
Rod head 21, drag link body 22, oscillating bearing 23;
The specific embodiment
Embodiment 1, and to shown in Figure 7, tension rod type hanging and the height adjustment mechanism that is used for rail vehicle truck of the present invention is respectively arranged with cross-tie beam 4, cross-tie beam 5 in front and back wheel on to two axle boxes 3 of 1 as Fig. 1.
The end of support beam is supported on the axle box by bindiny mechanism's 10 connections.
In the present embodiment, the bogie truck that each adopts the straight line traction electric machine is equipped with linear electric motors 2.Each linear electric motors 2 are by cross-tie beam 4 and cross-tie beam 5, and 5 vertical pull bars 7 hang connection, make linear electric motors 2 be installed in the center of axletree.
As shown in Figure 1,2 vertical pull bars 7 are hung the inboard of cross-tie beam 4 and the centre in the outside symmetrically.
3 vertical pull bars 7 are the inboard and the outside that cross-tie beam 5 hung in " product " font.
As shown in Figure 4, be provided with mount pad 41, be provided with height adjustment mechanism in the upper end of vertical pull bar 7 at the sidepiece of support beam.
The upper end of vertical pull bar 7 is threaded, and can penetrate to adjust block 15, adjusts block 15 and places in the mount pad 41, puts into back adjustment block 15 and just can not rotate.The bottom of vertical pull bar 7 is connected with linear electric motors by round pin 18, and vertical pull bar 7 can be around round pin 18 rotations.
Distance between adjustment block 15 and the round pin 18 is the real service range of vertical pull bar 7, adjusts this distance and just can adjust the distance of linear electric motors 2 with respect to support beam, promptly adjusts the height of linear electric motors 2.
When needs are adjusted, make vertical pull bar 7 around round pin 18 rotation, to adjust block 15 and together from mount pad 41, withdraw from together with vertical pull bar 7, rotation is adjusted block 15 and is made its distance apart from round pin 18 ends change (adjustment amount that can calculate every circle by pitch).
After adjusting to suitable distance, make vertical pull bar 7, adjust block 15 and together pack in the mount pad 41, so just realized height adjustment together with vertical pull bar 7 around round pin 18 contrarotations.
In order to protect the screw thread of vertical pull bar 7 ends, a head protector 16 can be set in its end.
Also but mount pad (41) arranged outside one baffle plate 17 prevents to adjust block 15 and deviates from mount pad 41, to play protective action.
One of ordinary skill in the art can figure out, and vertical pull bar 7 can be taked various ways with the screw thread fit of adjusting block 15, can adopt STRTHD (closely-pitched, coarse thread), also can adopt square thread, Acme thread and saw thread etc.
As shown in Figures 2 and 3, the two side ends at cross-tie beam 4, cross-tie beam 5 is respectively arranged with a through hole, installs in through hole and is provided with bindiny mechanism 10, and 10 of bindiny mechanisms directly penetrate the inside of axle box 3 and carry out captive joint.
In bindiny mechanism 10, also fastening in the tapped bore at short thread end 111 screw-in axle boxes 3 tops of double end stud 11, as fixed pedestal.
Support rubber is formed 13 compressions, centre hole is diminished, compress the mobile sleeve pipe 12 of the centre hole of packing into, and stop back-up ring 14 by in the groove of mobile sleeve pipe 12 outer wall ends, placing, make it be in impaction state always, thereby support rubber 13 and mobile sleeve pipe 12 are become one, can not relatively move.
One of ordinary skill in the art can understand, and bindiny mechanism 10 can adopt multiple version, and described support rubber forms 13 also can adopt various ways.In the present embodiment, be mainly the fabricate block of metal and rubber, with the rigidity of meet requirements.
Support rubber forms 13 can have various ways with cooperating also of mobile sleeve pipe 12, inner ring that can support rubber 13 is provided with groove, the outer wall of mobile sleeve pipe 12 is provided with annular protrusion simultaneously, makes both become one, prevent the purpose of rotating mutually to reach by concavo-convex cooperation.
As Fig. 1 and shown in Figure 6, between linear electric motors 2 and truck frame, be provided with 2 lateral connecting rods 8 are installed, described 2 lateral connecting rods 8 are arranged on the same side of linear electric motors, with the teeter of straight limit motor.
Lateral connecting rod 8 has a drag link body 22, in the end setting with linear electric motors 2 one oscillating bearing 23 is installed, and the rod head 21 of an employing metal and building rubber compound material is installed in the end setting with framework.
Rod head 21 can be a through type, is connected by having strong market potential with truck frame; Also can be the gudgeon formula, be connected with framework with fastener by gudgeon.
As Fig. 1 and shown in Figure 5, for transmitting tractive power along linear electric motors 2 vertically and between the truck frame drawing pull bar 9 is being set, this drawing pull bar 9 can be vertically fixing linear electric motors 2, transmit longitudinal traction power and braking force.
The main body of drawing pull bar 9 is a drag link body 20, and the tow attachment 19 of metal and building rubber compound material is all adopted at two ends.
Suspending way as shown in Figure 7, for realizing the planeness adjustment of linear electric motors self, guarantee higher homogeneity, be hung with 1 vertical pull bar 26 in the outside of support beam 24, be hung with 2 vertical pull bars 26 in the outside of support beam 25, thereby form the connection mode of three-point suspension.
Also can take to be hung with 2 vertical pull bars 26, be hung with 2 vertical pull bars 26 in the inboard of support beam 25, thereby form the connection mode of four-point suspension in the inboard of support beam 24.
The inboard or the outside at two support beams are hung with several vertical pull bars, and viewable design need be determined.By adjusting the vertical height of former and later two support beams, just can adjust the diff-H that linear electric motors 2 make progress front and back wheel the other side.And regulate to adopt the support beam of three-point suspension mode, it is poor in the same the other side of wheel transverse height that makes progress to adjust linear electric motors 2 again.
As mentioned above, the organization plan in conjunction with the accompanying drawings, present embodiment only is described with regard to the preferred embodiment of linear electric motors bogie truck of the present invention.For one of ordinary skill in the art, can take a hint in view of the above, and direct derivation goes out to meet other alternative structure of design concept of the present invention.Other architectural features that obtain thus also should belong to scheme scope of the present invention.
Claims (13)
1, a kind of tension rod type hanging and height adjustment mechanism that is used for rail vehicle truck is respectively arranged with a horizontal support beam on two right axle boxes of front and back wheel;
In the two side ends of described support beam and the junction of axle box, be provided with flexible connection mechanism;
On fore-and-aft direction, sidepiece at support beam is hung by several vertical pull bars respectively in the two ends that are arranged on the linear electric motors of axle box below, is provided with height adjustment mechanism in the upper end of vertical pull bar;
Be provided with mount pad with vertical pull bar equal number at the sidepiece of support beam, the height adjustment mechanism of vertical pull bar upper end held being supported on mount pad inside simultaneously, the lower end of vertical pull bar directly is connected with linear electric motors, it is characterized in that:
Sidepiece at support beam is provided with mount pad (41), is threaded in the upper end of vertical pull bar (7), can penetrate to adjust block (15), adjusts block (15) and places in the mount pad (41);
The bottom of vertical pull bar (7) is connected with linear electric motors (2) by round pin (18).
2, tension rod type hanging and the height adjustment mechanism that is used for rail vehicle truck according to claim 1 is characterized in that: at mount pad (41) arranged outside one baffle plate (17).
3, tension rod type hanging and the height adjustment mechanism that is used for rail vehicle truck according to claim 1 and 2, it is characterized in that: the end at vertical pull bar (7) screw thread is provided with a head protector (16).
4, tension rod type hanging and the height adjustment mechanism that is used for rail vehicle truck according to claim 1, it is characterized in that: the two side ends at support beam is respectively arranged with a through hole, install in through hole and be provided with bindiny mechanism (10), bindiny mechanism (10) directly penetrates the inside of axle box (3) and carries out captive joint.
5, tension rod type hanging and the height adjustment mechanism that is used for rail vehicle truck according to claim 4, it is characterized in that: in bindiny mechanism (10), also fastening in the tapped bore at the short thread end (111) of double end stud (11) screw-in axle box (3) top;
Mobile sleeve pipe (12) support rubber of packing into is formed in the hole of (13);
Support rubber is formed (13) and is had the part that two pairings are used, and two parts place the above and below of support beam attachment face (42) respectively during use;
The stop back-up ring of in the groove of mobile sleeve pipe (12) outer wall end, placing (14);
A hex-head nut (112) is set on the double end stud (11), and with the engagement of the outside thread of double end stud (11).
6, tension rod type hanging and the height adjustment mechanism that is used for rail vehicle truck according to claim 5 is characterized in that: the outer wall that the inner ring of support rubber composition (13) is provided with groove, mobile sleeve pipe (12) is provided with annular protrusion.
7, tension rod type hanging and the height adjustment mechanism that is used for rail vehicle truck according to claim 1, it is characterized in that: two support beams that on same bogie truck, are provided with, a support beam is hung with two vertical pull bars, and another support beam is hung with three vertical pull bars.
8, tension rod type hanging and the height adjustment mechanism that is used for rail vehicle truck according to claim 1, it is characterized in that: be arranged on two support beams on the same bogie truck, a support beam is hung with a vertical pull bar, and another support beam is hung with two vertical pull bars at least.
9, tension rod type hanging and the height adjustment mechanism that is used for rail vehicle truck according to claim 1, it is characterized in that: be arranged on two support beams on the same bogie truck, a support beam is hung with two vertical pull bars, and another support beam also is hung with two vertical pull bars.
10, tension rod type hanging and the height adjustment mechanism that is used for rail vehicle truck according to claim 1 is characterized in that: be provided with between linear electric motors and truck frame lateral connecting rod is installed;
Described lateral connecting rod has the main body that a drag link body forms, and the coupling end of lateral connecting rod and linear electric motors is provided with oscillating bearing;
The coupling end of lateral connecting rod and truck frame, the rod head of employing metal and building rubber compound material.
11, tension rod type hanging and the height adjustment mechanism that is used for rail vehicle truck according to claim 10, it is characterized in that: described lateral connecting rod is provided with two, is arranged on the same side of linear electric motors, or is separately positioned on the both sides of linear electric motors.
12, tension rod type hanging and the height adjustment mechanism that is used for rail vehicle truck according to claim 11 is characterized in that: described rod head, adopt straight-through structure and be connected by having strong market potential with described truck frame; Or adopt gudgeon formula structure and be connected with fastener by gudgeon with described truck frame.
13, according to claim 1 or 10 described tension rod type hanging and the height adjustment mechanisms that are used for rail vehicle truck, it is characterized in that: along linear electric motors a drawing pull bar vertically is set between linear electric motors and truck frame, described drawing pull bar is installed on the axial location of linear electric motors;
Described drawing pull bar, having a drag link body is main body, the drawing pull bar two ends are provided with the tow attachment of metal and building rubber compound material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101041381A CN100537323C (en) | 2006-07-31 | 2006-07-31 | Tension rod type hanging and height adjusting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101041381A CN100537323C (en) | 2006-07-31 | 2006-07-31 | Tension rod type hanging and height adjusting mechanism |
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| CN101117124A CN101117124A (en) | 2008-02-06 |
| CN100537323C true CN100537323C (en) | 2009-09-09 |
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| CNB2006101041381A Active CN100537323C (en) | 2006-07-31 | 2006-07-31 | Tension rod type hanging and height adjusting mechanism |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101581562B (en) * | 2009-05-27 | 2012-07-04 | 北京南口轨道交通机械有限责任公司 | Measuring method and instrument used for assembling and installing locomotive gear cases |
| CN102190002B (en) * | 2010-12-27 | 2013-07-31 | 南车青岛四方机车车辆股份有限公司 | Steering frame of linear motor |
| CN102774395B (en) * | 2011-05-11 | 2015-07-22 | 中国铁路总公司 | Height regulating method for driving device |
| CN104973077B (en) * | 2015-06-30 | 2017-10-31 | 中车青岛四方机车车辆股份有限公司 | Linear electric motors anti-drop device, height adjusting method, Linear motor bogie |
| CN108705047B (en) * | 2018-05-03 | 2024-06-14 | 安徽新宁装备股份有限公司 | Slide frame mechanism of molding machine |
| CN111907552B (en) * | 2019-07-17 | 2021-08-13 | 中车大同电力机车有限公司 | Locomotive traction device and adjusting method thereof |
| CN110441064B (en) * | 2019-08-13 | 2021-06-22 | 中国航发贵阳发动机设计研究所 | Auxiliary hanging pull rod assembling method for optimizing vibration of aircraft engine |
| CN113002582B (en) * | 2021-02-25 | 2022-08-12 | 中车株洲电力机车有限公司 | Bogie equipment hanging device and vibration adjusting method thereof |
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| CN101117124A (en) | 2008-02-06 |
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Address after: Chengyang District of Shandong city of Qingdao province Jinhong road 266111 No. 88 Patentee after: CRRC QINGDAO SIFANG CO., LTD. Address before: 266111 Qingdao, Chengyang District, Shandong Province town of Hong Hu spines Patentee before: CSR Qingdao Sifang Locomotive and Rolling Stock Co., Ltd. |