CN201071362Y - Binary solid lubrication stick for locomotive wheel rim - Google Patents

Binary solid lubrication stick for locomotive wheel rim Download PDF

Info

Publication number
CN201071362Y
CN201071362Y CNU2007200909043U CN200720090904U CN201071362Y CN 201071362 Y CN201071362 Y CN 201071362Y CN U2007200909043 U CNU2007200909043 U CN U2007200909043U CN 200720090904 U CN200720090904 U CN 200720090904U CN 201071362 Y CN201071362 Y CN 201071362Y
Authority
CN
China
Prior art keywords
typing
shell
wheel rim
excellent core
joint
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.)
Expired - Lifetime
Application number
CNU2007200909043U
Other languages
Chinese (zh)
Inventor
郭豫新
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Yuxin Dacheng Railway Traffic Equipment Co., Ltd.
Original Assignee
ZHENGZHOU YUXIN RAILWAY METAL MATERIALS PROTECTION CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ZHENGZHOU YUXIN RAILWAY METAL MATERIALS PROTECTION CO Ltd filed Critical ZHENGZHOU YUXIN RAILWAY METAL MATERIALS PROTECTION CO Ltd
Priority to CNU2007200909043U priority Critical patent/CN201071362Y/en
Application granted granted Critical
Publication of CN201071362Y publication Critical patent/CN201071362Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Landscapes

  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

The utility model discloses a dualistic solid lubricant stick used for a locomotive rim, which is composed of a stick core and a case-hardened casing; wherein, the stick core is arranged into the case-hardened casing, the stick core and the case-hardened casing are made from different lubricating materials, and the melting point of the stick core is lower than that of the case-hardened casing. In addition, a protruding platform is provided at one end of the case-hardened casing and the stick core, and a groove is provided at the other end. The protruding platform is matched with the groove in order to be in butt joint between various binary solid lubricant sticks conveniently. The utility model adopts the dualistic structure, the stick core and the case-hardened casing are made from different lubricating materials; the case-hardened casing is characterized in high intensity and fine the case-hardened effect, thereby avoiding the sintering process of the stick core, and holding the intrinsic lubricating property of the lubricating materials; the lubricant stick simple structure, fine lubricating effect, accurate coating position, strong adhesive ability, easy promotion and good social and economic benefits.

Description

Wheel rim of locomotive binary solid lubricating rod
One, technical field:
The utility model relates to a kind of wheel rim of locomotive lubricant, particularly relates to a kind of wheel rim of locomotive binary solid lubricating rod.
Two, background technology:
Under the strategic thought of railway great-leap-forward development instructed, the China Railway cause had obtained fast development in recent years.Facility modernization of making rapid progress and the Infrastructure maintenance levels that relatively lags behind manifest inharmonious gradually.Distinct issues are exactly the binding site of the two---wheel rail relation.Along with the speed of a motor vehicle improves, freight volume strengthens, show as that the curved steel rail abrasion are serious, the wheel hurt is outstanding.And the wearing and tearing of wheel rim of locomotive mainly to be curve section overcome bogie twisting resistance and centrifugal force and occur in frictional wear between wheel rim and the rail, and the lateral impact masterpiece that produces of the swing of crawling of linear section is used in the frictional wear between wheel rim and the rail.Wheel wear is right to a certain degree needing to change wheel, perhaps need wheel to cause great waste to carrying out the Xuan wheel, so people adopts multiple measure that wheel rim is lubricated, to reduce the wearing and tearing of wheel rim.
Along with the raising of railway operation speed, original liquid of wheel rim or quasi-hydrodynamic lubrication mode demonstrate limitation gradually.Outstanding problem is under the effect of train air-flow, and pollution locomotive car body, wheel track tread reduce lubricant effect thereby the grease of spraying disperses, and increase management difficulty; In addition, in friction process, the metallic surface of wheel track has produced fine crack, and this tiny crack develops into crow's feet and the fish scale spot finally peels off piece along with wheel periodically acts under the oil wedge action of liquid lubricating oil, influence the work-ing life of wheel track.Really can this defective, external last century end has begun applying solid wheel flange lubricating technology, and the research work of domestic units concerned has also entered the application test stage.The cleaning of solid lubrication mode, environmental protection, characteristics such as the coating position is accurate, it is to apply that there is subject matter at present existing wheel rim solid lubrication rod, adhere to, on three links of film forming, coating requires lubricating rod to be coated in easily on the wheel rim, adhere to be difficult for getting rid of after the requirement lubricant is coated and spatter, can on wheel rim, treat, film forming requires the extruding by wheel rim and rail, can form the fine lubricant film, the defective of existing solid lubrication rod is in particular in: (1) uses the solid bar of plastics as carrier, though do not resemble easy embrittlement the resin material, at wheel rim surface sticking power extreme difference.There are a large amount of " turning shape " plastic filaments near the lubricated caput that the operation back contacts with wheel rim.Run up after the heating, these " turning shape " plastic filaments melt again and become bulk.Therefore limited lubricant film is only taken turns provide protection is arranged the place, takes turns there not being secondary lubricated to other.(2) with graphite broken, the fracture that is that the lubricating rod of main body very easily takes place, be difficult to equally, can't realize that secondary is lubricated attached to the metallic surface.(3) existing solid bar needs sintering to form, and has so both destroyed the performance of lubricant own, causes lubricant effect poor, increases the difficulty that solid bar and wheel rim are smeared again, causes to smear inhomogeneously, and can not form the pressure lubrication film.
Three, utility model content:
Technical problem to be solved in the utility model is: overcome the deficiencies in the prior art, a kind of simple in structure, high lubricating effect, the coating position is accurate, adhesive ability is strong wheel rim of locomotive binary solid lubricating rod are provided.
The technical solution of the utility model is: a kind of wheel rim of locomotive binary solid lubricating rod, form by excellent core and typing shell, wherein, described excellent core is arranged in the described typing shell, described excellent core is made by different lubricants with the typing shell, and the fusing point of described typing shell and intensity are higher than the fusing point and the intensity of described excellent core.
One end of described typing shell and excellent core is provided with convex, and the other end is provided with groove, and described convex and groove are complementary, two binary solid lubricating rod butt joints in the process easy to use.
One end socket of one end of described typing shell and a hollow typing joint, wherein, the shape of described typing shell both ends internal surface and size are complementary with the shape and the size of described hollow typing joint outside surface, and the two by on the described hollow typing joint outside surface or the flange that is provided with on the inner surface of outer cover of described location realize axial location, be provided with excellent core in described typing shell and the described hollow typing joint inner chamber, excellent core in described hollow typing joint and its inner chamber promptly is described convex, have certain distance between the typing shell end face of described excellent core away from an end end face of hollow typing joint and this end, the cavity of this segment distance formation promptly is described groove; The making material of described hollow typing joint and described typing shell is identical.
The outside surface of described hollow typing joint is a cylindricality, or is taper, or is the combination of cylindricality and taper.
The excellent core that is provided with in described hollow typing joint and the described typing shell inner cavity is an integral structure, forms by lubricant is integrated poured; Perhaps, the excellent core that is provided with in described hollow typing joint and the described typing shell inner cavity is formed by the lubricant cast respectively, and the end face of the two contacts.
Perhaps, one end of described typing shell is provided with a undergauge step shell section, the shape of described undergauge step shell section outside surface and size are complementary with the shape and the size of described typing shell the other end internal surface, be provided with excellent core in described undergauge step shell section and the described typing shell inner cavity, excellent core in described undergauge step shell section and its inner chamber promptly is described convex, have certain distance between the typing shell end face of described excellent core away from an end end face of undergauge step shell section and this end, the cavity that this segment distance forms promptly is described groove; The making material of described hollow typing joint and described typing shell is identical.The outside surface of described undergauge step shell section is a cylindricality, or is taper, or is the combination of cylindricality and taper.
The shape of cross section of described typing shell is a rectangle, or is square, or is circular.The wall thickness of described typing shell is 2~4mm.Contain flake graphite, resin, fluidizer and properties-correcting agent in the described typing shell, its fusing point is 110 ℃~150 ℃; Contain Nano metal powder, graphite and couplant in the described excellent core, its fusing point is 60 ℃~100 ℃.
The beneficial effects of the utility model are:
1, it adopts diadactic structure the utility model, the excellent core of cast in the typing shell, the rod core is made by different lubricants with the typing shell, the typing shell has the intensity height, the typing good effectiveness, avoided the sintering program of excellent core like this, the own lubricating property that has kept lubricant, the fusing point height of shell of finalizing the design in addition is higher than the fusing point of excellent core, during use, the typing shell contacts with wheel rim with excellent core simultaneously, fricative heat at first melts excellent core, make excellent core end be in liquation and fritting liquid status, rod core liquation just is coated on the wheel rim, tensio-active agent in the rod core liquation rapidly and melts combine and get rid of other steam, greasy dirts etc. and adhesive ability are strong, and this layer coherent film rolls intensification through between the wheel track, friction chemical reaction takes place, on wheel rim and rail, form the composite lubricated film of one deck chemical bonding respectively and reach the purpose of lubricating anti-attrition, combine by chemical bond between this film and matrix metal, even under very high loading condiction, still guarantee low-friction coefficient, supporting capacity is than plain oil fat and the high several times of oildag, effectively prolong wheel, in the work-ing life of rail, prolong more than 3 times the work-ing life of wheel.Owing to adopt the dualistic formula structure of shell and excellent core, improved the comprehensive technical performance of lubricating rod greatly, original monobasic lubricating rod is difficult for or irrealizable technical indicator becomes a reality.
2, the utility model high lubricating effect, the lubricant film that the rod core forms on wheel rim can not be subjected to rain drop erosion to influence antifriction effect and not stick the dust grit, severe environment as: under dust storm, mine and the moist rainy condition, also has good lubrication, the tiny crack of also effectively having avoided the metal interlevel displacement to be produced in addition, solid matter has immobility (can not transmit pressure) simultaneously, has fundamentally solved the problem that peels off piece that crack propagation causes.
3, an end of the utility model typing shell and excellent core is provided with convex, and the other end is provided with groove, and convex and groove are complementary, be convenient to different binary solid lubricating rod butt joints, lubricating rod is used up fully, save cost, and butt joint is convenient, the used time is short, efficient is high.Convex and groove adopt taper in addition, are convenient to butt joint and accurate positioning.Convex intensity height, frangibility does not reduce use cost.
4, the utility model typing shell can embrittlement, and is easy to use, can adopt direct coating method, realized utilizing car-mounted device to carry out the wheel rim solid lubrication under normal driving condition, and it is accurate to apply the position, and equipment is simple, and is non-maintaining, trouble free.
5, the superpower adhesive ability of the utility model can both guarantee good film forming at wind, frost, rain, snow, greasy weather gas, is not subjected to weather effect.Reduced lubricant in addition and be scattered, reduced pollution level, reduced the vibrations of noise and vehicle, be beneficial to environmental protection circuit and environment.
6, the utility model typing shell and excellent core have excellent conducting performance, do not influence cab signal, improve to form security.
7, the lubricant film of the utility model formation has the lubricated effect of secondary, can reduce the quantity that is provided with of lubricating rod relatively, reduces use cost.
8, the utility model is applied widely, and the selling market is huge, is easy to promote, and has good society and economic benefit.
Four, description of drawings:
Fig. 1 uses one of structural representation of binary solid lubricating rod for wheel rim of locomotive;
Fig. 2 is one of left view of wheel rim of locomotive usefulness binary solid lubricating rod shown in Figure 1;
Fig. 3 is a wheel rim of locomotive shown in Figure 1 with two of the left view of binary solid lubricating rod;
Fig. 4 is a wheel rim of locomotive shown in Figure 1 with three of the left view of binary solid lubricating rod;
Fig. 5 for wheel rim of locomotive with two of the structural representation of binary solid lubricating rod;
Fig. 6 for wheel rim of locomotive with three of the structural representation of binary solid lubricating rod;
Fig. 7 for wheel rim of locomotive with four of the structural representation of binary solid lubricating rod;
Fig. 8 for wheel rim of locomotive with five of the structural representation of binary solid lubricating rod;
Fig. 9 for wheel rim of locomotive with six of the structural representation of binary solid lubricating rod.
Five, embodiment:
Embodiment one: referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, among the figure, wheel rim of locomotive is made up of excellent core 2 and typing shell 1 with the binary solid lubricating rod, contain flake graphite, resin, fluidizer and properties-correcting agent in the typing shell 1, consolidate moulding by mould after the heat fused, contain Nano metal powder, graphite and couplant in the rod core 2, be cast in moulding in the typing shell 1 after the heating and melting, typing shell 1 fusing point is 110 ℃~150 ℃; Rod core 2 fusing points are 60 ℃~100 ℃, and the two differs about 50 ℃.The shape of cross section of typing shell 1 is rectangle (shown in Figure 2), or is square (shown in Figure 3), or is that circular (shown in Figure 4) can also be other shapes, determines as required.The wall thickness of typing shell 1 is 2~4mm, can choose 2,2.5,3,3.5,4 or the like as required.
During use, lubricating rod is contained on the mechanism, the typing shell 1 of one end contacts with wheel rim with excellent core 2 simultaneously, because excellent core 2 is in the center, it is low that fusing point is cut in difficult heat radiation, therefore fricative heat at first melts excellent core 2, make excellent core 2 ends be in liquation state and/or critical half solution state of solid-liquid, because typing shell 1 fusing point height, play the effect of bath wall, therefore excellent core 2 forms a molten bath, rod core 2 liquations just are coated on the wheel rim easily, and the tensio-active agent in the excellent core liquation rapidly and melts combine and get rid of other steam, greasy dirts etc. and adhesive ability are strong, and this layer coherent film rolls intensification through between the wheel track, friction chemical reaction takes place, and forms the composite lubricated film of one deck chemical bonding respectively and reach the purpose of lubricated anti-attrition on wheel rim and rail.The effect of typing shell 1 is the rigidity that keeps whole barred body, is controlled the amount of feed of whole barred body by the abrasion of it and wheel rim.
Embodiment two: referring to Fig. 5, numbering is identical with embodiment one among the figure, the same meaning of representative, something in common does not repeat, difference is: an end socket of an end of typing shell 1 and a hollow typing joint 3, wherein, the shape of typing shell 1 both ends internal surface and size are complementary with the shape and the size of hollow typing joint 3 outside surfaces, and the two realizes axial location by the flange that (also can be on shell 1 internal surface of location) on hollow typing joint 3 outside surfaces be provided with, be provided with excellent core 2 in typing shell 1 and hollow typing joint 3 inner chambers, excellent core 2 in hollow typing joint 3 and its inner chamber forms convex, has certain distance between typing shell 1 end face of rod core 2 away from an end end face of hollow typing joint 3 and this end, this segment distance forms groove, convex and groove are complementary, and are convenient to different binary solid lubricating rod butt joints; Hollow typing joint 3 is identical with the making material of typing shell 1.The outside surface of hollow typing joint 3 is a cylindricality.
When a lubricating rod runs low,, lubricating rod is used up fully, save cost with another lubricating rod and its butt joint, convex intensity height, frangibility not makes that butt joint is convenient, the used time is short, the high reduction of efficient, use cost.
Embodiment three: referring to Fig. 6, present embodiment and embodiment two are basic identical, something in common does not repeat, difference is: the outside surface of hollow typing joint 3 is taper (also can adopt the combination of cylindricality and taper), be convenient to the location butt joint, determine the gradient of taper according to actual needs,, do not outline one by one such as adopting 1: 20 or the like.
Embodiment four: referring to Fig. 7, present embodiment and embodiment three are basic identical, and something in common does not repeat, and difference is: the excellent core 2 that is provided with in hollow typing joint 3 and typing shell 1 inner chamber is formed by the lubricant cast respectively, and the end face of the two contacts.
Embodiment five: referring to Fig. 8, present embodiment and embodiment two are basic identical, something in common does not repeat, difference is: an end of typing shell 1 is provided with a undergauge step shell section 4, and (the two is integral structure, also can adopt the split stationary structure, when dividing body structure, the making material of the two is identical, do not describe in detail), be provided with excellent core 2 in undergauge step shell section 4 and typing shell 1 inner chamber, excellent core 2 in undergauge step shell section 4 and its inner chamber forms convexes, has certain distance, this segment distance formation groove between typing shell 1 end face of excellent core 2 away from an end end face of undergauge step shell section 4 and this end.
Embodiment six: referring to Fig. 9, present embodiment and embodiment six are basic identical, and something in common does not repeat, and difference is: the outside surface of undergauge step shell section 4 is taper.
The shape that changes shape, change convex and the groove of typing shell can be formed a plurality of embodiment, is common variation range of the present utility model, does not describe in detail one by one at this.

Claims (9)

1. wheel rim of locomotive binary solid lubricating rod, it is characterized in that: this binary solid lubricating rod is made up of excellent core and typing shell, wherein, described excellent core is arranged in the described typing shell, described excellent core is made by different lubricants with the typing shell, and the fusing point of described typing shell and intensity are higher than the fusing point and the intensity of described excellent core.
2. wheel rim of locomotive binary solid lubricating rod according to claim 1, it is characterized in that: an end of described typing shell and excellent core is provided with convex, the other end is provided with groove, and described convex and groove are complementary, two binary solid lubricating rod butt joints in the process easy to use.
3. wheel rim of locomotive binary solid lubricating rod according to claim 2, it is characterized in that: an end socket of an end of described typing shell and a hollow typing joint, wherein, the shape of described typing shell both ends internal surface and size are complementary with the shape and the size of described hollow typing joint outside surface, and the two by on the described hollow typing joint outside surface or the flange that is provided with on the inner surface of outer cover of described location realize axial location, be provided with excellent core in described typing shell and the described hollow typing joint inner chamber, excellent core in described hollow typing joint and its inner chamber promptly is described convex, have certain distance between the typing shell end face of described excellent core away from an end end face of hollow typing joint and this end, the cavity of this segment distance formation promptly is described groove; The making material of described hollow typing joint and described typing shell is identical.
4. wheel rim of locomotive binary solid lubricating rod according to claim 3 is characterized in that: the outside surface of described hollow typing joint is a cylindricality, or is taper, or is the combination of cylindricality and taper.
5. wheel rim of locomotive binary solid lubricating rod according to claim 4 is characterized in that: the excellent core that is provided with in described hollow typing joint and the described typing shell inner cavity is an integral structure, forms by lubricant is integrated poured; Perhaps, the excellent core that is provided with in described hollow typing joint and the described typing shell inner cavity is formed by the lubricant cast respectively, and the end face of the two contacts.
6. wheel rim of locomotive binary solid lubricating rod according to claim 2, it is characterized in that: an end of described typing shell is provided with a undergauge step shell section, the shape of described undergauge step shell section outside surface and size are complementary with the shape and the size of described typing shell the other end internal surface, be provided with excellent core in described undergauge step shell section and the described typing shell inner cavity, excellent core in described undergauge step shell section and its inner chamber promptly is described convex, have certain distance between the typing shell end face of described excellent core away from an end end face of undergauge step shell section and this end, the cavity that this segment distance forms promptly is described groove; The making material of described hollow typing joint and described typing shell is identical.
7. wheel rim of locomotive binary solid lubricating rod according to claim 6 is characterized in that: the outside surface of described undergauge step shell section is a cylindricality, or is taper, or is the combination of cylindricality and taper.
8. wheel rim of locomotive binary solid lubricating rod according to claim 1 is characterized in that: the shape of cross section of described typing shell is a rectangle, or is square, or is circular.
9. wheel rim of locomotive binary solid lubricating rod according to claim 1 is characterized in that: the wall thickness of described typing shell is 2~4mm.
CNU2007200909043U 2007-07-02 2007-07-02 Binary solid lubrication stick for locomotive wheel rim Expired - Lifetime CN201071362Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007200909043U CN201071362Y (en) 2007-07-02 2007-07-02 Binary solid lubrication stick for locomotive wheel rim

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007200909043U CN201071362Y (en) 2007-07-02 2007-07-02 Binary solid lubrication stick for locomotive wheel rim

Publications (1)

Publication Number Publication Date
CN201071362Y true CN201071362Y (en) 2008-06-11

Family

ID=39549923

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2007200909043U Expired - Lifetime CN201071362Y (en) 2007-07-02 2007-07-02 Binary solid lubrication stick for locomotive wheel rim

Country Status (1)

Country Link
CN (1) CN201071362Y (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104450103A (en) * 2014-12-29 2015-03-25 成都森发橡塑有限公司 Locomotive rim solid lubricant and preparation method thereof
CN106281619A (en) * 2016-08-16 2017-01-04 浙江宝晟铁路新材料科技有限公司 A kind of gauge face sweat gland type solid lubrication stick, its preparation method and clamping device thereof
CN111607448A (en) * 2020-06-12 2020-09-01 中建材科创新技术研究院(山东)有限公司 Solid lubricating material with lubricating and antifriction functions and application thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104450103A (en) * 2014-12-29 2015-03-25 成都森发橡塑有限公司 Locomotive rim solid lubricant and preparation method thereof
CN104450103B (en) * 2014-12-29 2017-10-13 成都森发橡塑有限公司 A kind of wheel rim of locomotive kollag and preparation method thereof
CN106281619A (en) * 2016-08-16 2017-01-04 浙江宝晟铁路新材料科技有限公司 A kind of gauge face sweat gland type solid lubrication stick, its preparation method and clamping device thereof
CN106281619B (en) * 2016-08-16 2022-08-23 浙江宝晟铁路新材料科技有限公司 Rail distance surface sweat gland type solid lubricating rod, preparation method thereof and clamping device thereof
CN111607448A (en) * 2020-06-12 2020-09-01 中建材科创新技术研究院(山东)有限公司 Solid lubricating material with lubricating and antifriction functions and application thereof
CN111607448B (en) * 2020-06-12 2022-09-13 中建材科创新技术研究院(山东)有限公司 Solid lubricating material with lubricating and antifriction functions and application thereof

Similar Documents

Publication Publication Date Title
US6649573B2 (en) Solid lubricant and composition
US20210207670A1 (en) Brake disc and manufacturing method thereof
Yang et al. Effect of the ratio of graphite/pitch coke on the mechanical and tribological properties of copper–carbon composites
CN102643707B (en) Liquid lubricating antifriction repairing agent for wheel/rail, preparing method and application
CN201071362Y (en) Binary solid lubrication stick for locomotive wheel rim
CN102134397B (en) Synthetic brake shoe for urban railway vehicle and preparation method thereof
CN102796602A (en) Composite solid lubricating bar shell and preparation method thereof
CN106281619B (en) Rail distance surface sweat gland type solid lubricating rod, preparation method thereof and clamping device thereof
CN102329678A (en) Wear-resisting protective factice for rail wheeltrack
CN103087805A (en) Nanometer material repairing agent capable of repairing engine cylinder block
Ma et al. Experimental evaluation of braking pad materials used for high-speed elevator
CN205298337U (en) Synthetic brake shoe in area skew groove
Wang et al. Wheel/rail adhesion and damage under different contact conditions and application parameters of friction modifier
US7683014B2 (en) Process for making a two-part solid lubricant stick
CN104327928B (en) Railway locomotive wheel track kollag and preparation method thereof
CN2784265Y (en) Solid lubricating device for wheels
CN2460547Y (en) Railway rail with laser alloy layer on surface
Arias-Cuevas et al. Field investigations into the performance of magnetic track brakes of an electrical multiple unit against slippery tracks. Part 2: Braking force and side effects
CN100567469C (en) A kind of punch head lubricating solid grain that is used for die casting and preparation method thereof
CN204455732U (en) The groove-shape rail of local strengthening sclerosis
CN102796601B (en) Composite solid lubricating rod inner layer and preparation method thereof
CN208198426U (en) A kind of wear-resisting type rail truck passenger and freight car bogie bushing
CN206520617U (en) A kind of arc dryness wheel-rail lubricating block
CN1077483A (en) Solid lubricant for locomotive wheel rim
He et al. Analysing the rolling contact damage behavior of a high-speed wheel tread—A case study

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20160512

Address after: 101508 Beijing Miyun Gubeikou area outside the ancient imperial Street No. 11 town government office building 212 room -898 (Gubeikou centralized office)

Patentee after: Beijing Yuxin Dacheng Railway Traffic Equipment Co., Ltd.

Address before: 450051 No. 1, North First Street, Zhengzhou west gate, Henan

Patentee before: Zhengzhou Yuxin Railway Metal Materials Protection Co., Ltd.

CX01 Expiry of patent term

Granted publication date: 20080611

CX01 Expiry of patent term