CN110171438A - Coupler hook body - Google Patents
Coupler hook body Download PDFInfo
- Publication number
- CN110171438A CN110171438A CN201910505784.6A CN201910505784A CN110171438A CN 110171438 A CN110171438 A CN 110171438A CN 201910505784 A CN201910505784 A CN 201910505784A CN 110171438 A CN110171438 A CN 110171438A
- Authority
- CN
- China
- Prior art keywords
- traction table
- coupler
- hitch
- hook body
- circular arc
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
- B61G3/00—Couplings comprising mating parts of similar shape or form which can be coupled without the use of any additional element or elements
- B61G3/10—Couplings comprising mating parts of similar shape or form which can be coupled without the use of any additional element or elements with coupling heads in the form of hook-like interengaging rigid jaws, e.g. "Willison" type
Abstract
The embodiment of the present invention provides a kind of coupler hook body, belongs to railway transport field.The coupler hook body includes: upper traction table, lower traction table, gusset, coupler body main body, further includes: the first connecting portion with circular arc concave surface connects the upper traction table and the gusset；Second connecting portion with circular arc concave surface connects the upper traction table and the coupler body main body；And the third interconnecting piece with circular arc concave surface, connect the lower traction table and the coupler body main body.The stress that the coupler hook body can reduce hitch is concentrated, and the fatigue strength of hitch is improved.
Description
Technical field
The present invention relates to railway transportations, more particularly to a kind of coupler hook body.
Background technique
Coupler hook body connects and transmits the critical component of longitudinal force as realizing between locomotive and vehicle, vehicle and vehicle,
Load-carrying vehicle transportation safety is focused in its reliable sexual intercourse.There are a large amount of crack problems for maintenance discovery hitch, are split with traction table root
Line is most.Its reason is analyzed, in addition to abrasion reduces surface quality, traction table is primarily due to as supporting region small volume and bears
Biggish longitudinal pulling force and impact, local stress are very big.
Cooperate when the major function of drawbar coupler platform is locked position of coupler with hook bolt traction table, to bear the traction of vehicle
Power is the main portions that coupler buffering device bears tractive force.After hitch entrucking use, by hitch self gravitation effect, coupler head
It is contacted between traction table in hang, therefore under two hitch interconnected, there are gap, train tractions between upper traction table
When, lower traction table elder generation stress, when traction is parallel to each other to two hitches, upper traction table ability stress, and at this time by hitch itself weight
Power, lower traction table stress are greater than upper traction table.Traction table unbalance stress in utilization, causes lower traction table individually to hold above and below hitch
Whole tractive force or most of tractive force are carried on a shoulder pole, then as increasing with train longitudinal force caused by operating condition variation, reduces hitch
Fatigue life.In addition, stress is concentrated, and loaded area is small since traction table is non-rounding off structure；Traction table itself is short,
It is thin, and there are the reasons such as casting flaw to cause traction table Root Stress excessive, there are plastically deforming area, in addition vehicle operation,
In braking, starting process, drawbar coupler platform frequently bears biggish tractive force, impact force, so fatigue crack easy to form.One
Denier hitch cracks, and very big hidden danger can be brought to the operation of train.
Summary of the invention
The purpose of the embodiment of the present invention is that providing a kind of coupler hook body, which can reduce the stress collection of hitch
In, improve the fatigue strength of hitch.
To achieve the goals above, the embodiment of the present invention provides a kind of coupler hook body, which includes: upper traction
Platform, lower traction table, gusset, coupler body main body, further includes: the first connecting portion with circular arc concave surface, connect the upper traction table and
The gusset；Second connecting portion with circular arc concave surface connects the upper traction table and the coupler body main body；And there is circular arc
The third interconnecting piece of concave surface connects the lower traction table and the coupler body main body.
Preferably, the circular arc concave of the first connecting portion is 20mm, length 15mm.
Preferably, the second connecting portion and the circular arc concave of the third interconnecting piece are 30mm.
Preferably, the inner arc radius of the upper traction table is 70mm, length 60mm.
Preferably, the outer arc radius of the upper traction table is 150mm, length 80mm.
Preferably, the height of the upper traction table is 25mm.
Preferably, the inner arc radius of the lower traction table is 70mm, length 65mm.
Preferably, the outer arc radius of the lower traction table is 150mm, length 90mm.
Preferably, the height of the lower traction table is 35mm.
Preferably, the inner arc of the upper traction table and the lower traction table is 33mm at a distance from outer arc.
Through the above technical solutions, using coupler hook body provided by the invention, the coupler hook body include: upper traction table, under
Traction table, gusset, coupler body main body, further includes: the first connecting portion with circular arc concave surface connects the upper traction table and the muscle
Plate；Second connecting portion with circular arc concave surface connects the upper traction table and the coupler body main body；And with circular arc concave surface
Third interconnecting piece connects the lower traction table and the coupler body main body.The stress that the coupler hook body can reduce hitch is concentrated, and is mentioned
The high fatigue strength of hitch.
The other feature and advantage of the embodiment of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Attached drawing is to further understand for providing to the embodiment of the present invention, and constitute part of specification, under
The specific embodiment in face is used to explain the present invention embodiment together, but does not constitute the limitation to the embodiment of the present invention.Attached
In figure:
Fig. 1 is the traction table overall structure diagram that one embodiment of the invention provides；
Fig. 2 is the traction table schematic diagram in A-A direction that one embodiment of the invention provides；
Fig. 3 is the traction table B-B direction schematic diagram that one embodiment of the invention provides.
Description of symbols
The lower traction table of traction table 2 on 1
3 coupler body pin hole, 4 hook lock chamber
5 gussets
The arc radius of the circular arc concave surface of R1 second connecting portion
The arc radius of the circular arc concave surface of R2 third interconnecting piece
The inner arc radius of the upper traction table of R3
The outer arc radius of the upper traction table of R4
The arc radius of the circular arc concave surface of R5 first connecting portion
The inner arc radius of traction table under R6
The outer arc radius of traction table under R7
The arc radius of the interior outside interconnecting piece of traction table under R8
Specific embodiment
It is described in detail below in conjunction with specific embodiment of the attached drawing to the embodiment of the present invention.It should be understood that this
Locate described specific embodiment and be merely to illustrate and explain the present invention embodiment, is not intended to restrict the invention embodiment.
Coupler and draft gear is by hitch (coupler body, hook bolt), couple yoke, buffer, preceding from plate, turning set, coupler yoke key etc. zero
Component composition, is installed in the draw beam at vehicle body bottom frame both ends.When vehicle is towed, the active force of coupler and draft gear is transmitted
Process is (it is assumed that 16 type hitches are preceding): from plate → buffer → 16 type couple yokes → hook tail before front end vehicle draw beam → 16 types
Sell → 16 type coupler bodies → 16H hook bolt (preceding) → 16H hook bolt (rear) → 17 type coupler body → coupler yoke key → 17 type couple yokes → buffer
From plate → rear end vehicle draw beam before → 17 types.
When vehicle braking is slowed down, the active force transmittance process of coupler and draft gear is (it is assumed that 16 type hitches are preceding): after
Hold vehicle body center plate composition → buffer → 17 types from plate → 17 type coupler bodies → 16H hook bolt (rear) → 16H hook bolt (preceding) → 16 type
Coupler body → 16 types are formed from plate → buffer → front end vehicle body center plate.Hitch connection is internal, and there are three gaps, are respectively as follows: coupler body
With traction table gap delta 1 above and below hook bolt, guard pin flange gap δ 2, coupler knuckle pin hole and coupler knuckle pin gap delta 3, the gap between each position exists
Meet under theoretical case: 1 < δ of δ, 2 < δ 3.When hitch tension, the traction table up and down of coupler body and hook bolt is carried, and two faces hook bolt S are held
It carries, increases or when longitudinal pulling force very large traction platform generates plastic deformation as traction table is worn away, guard pin flange and lifting lug may be by
Gradually bear fractional load.When hitch is pressurized, coupler body and the carrying of hook bolt shock testing machine.
In effect, traction table contacts with each other coupler device with traction table in hook bolt on coupler hook body, and contact portion generates
Larger stress especially generates larger stress in the transition position and traction table root of upper hook lock chamber periphery gusset and upper traction table
It concentrates.For this defect, outside arc radius in traction table root, increases the width between two circular arcs in increase, increases gusset
With upper traction table transition arc radius, keep its contact site more smooth, reduces stress and concentrate.Upper traction table height is reduced simultaneously
Traction table gap up and down is controlled, so that power transmission and being more uniformly stressed.
When traction table acts under traction table and hook bolt under hitch, stress is larger at traction table root under hitch, mainly by
The traction table curtailment under hitch, total length be less than hook bolt traction table length, cause hook bolt traction table some not
It completely attaches to, therefore the discontinuity in loading process, traction table root under hitch is caused to generate stress concentration.It is lacked for this
Fall into, the present invention can increase lower traction table length, can completely and hook bolt under traction table come into full contact with, reduce locally
Stress.Increase outside arc radius in lower traction table, and increases the width between two circular arcs.Increase simultaneously lower traction table height with
This can increase the forced area of traction table, so that power transmission and being more uniformly stressed.Hitch longitudinally rushes train at runtime
It hits big.For this defect, the present invention can increase the diameter of coupler yoke key, reduce the fit clearance of coupler yoke key and hole, from
And reduce impact of collision.Described in text specific as follows.
16,17 type hitches, hook bolt material used in heavy-duty freight car are to cast E grades of steel at present, trade mark 25MnCrNiMoA,
16,17 type couple yokes are E grades of steel of forging, and trade mark ZG25MnCrNiMo, mechanical property is as shown in table 1-1 and 1-2.
The mechanical property of E grades of steel of table 1-1
The chemical component of E grades of steel of table 1-2
| C | Si | Mn | S | Cr | Ni | Mo | Cu | P | Fe |
| .26 | 0.36 | 1.4 | 0.022 | 0.5 | 0.45 | 0.25 | 0.20 | 0.03 | Surplus |
Structure improves Primary Reference simulation calculation: being compared by Optimal Structure Theory, method and calculating repeatedly, reduces knot
The stress of structure.Final to determine traction table structural modification situation, specifically: hitch mainly passes through contact block transitive load, so building
Vertical three-dimensional surface-to-surface contact turn to hitch hitch finite element model being established with Hypernesh, using high-order four sides with calculating
Body unit, cell type SOLIDS187, unit size 4mm.First in hitch Surface Creation 4mm size quadrangle and triangle
Mixed cell, then divides tetrahedron element using the method for cutting quadrilateral units, and unit number is 3026981.Hitch connects
Touching has: coupler body traction table-contact of hook bolt traction table, hook bolt S face contact, hook bolt-hook bolt pin contacts, lifting lug-hook bolt pin contacts.Mesh
Mark face unit uses TARGE170, and Contact surface element uses CONTA174 unit, ignores initial breakthrough and retain primary clearance, counts
Calculation process allows to automatically update contact stiffness, to improve computational convergence.With von Mises stress evaluation structural static strength.
Since traction table crackle is mainly caused by tensile load, so boundary condition is set are as follows: hitch one end constraint three
A direction displacement, the other end apply the tensile load of 800kN, and hook bolt and lock iron contact site apply lateral confinement.
When hitch bears 800kN, check that coupler body node is averaged vonMises stress.Most hazardous part appears in coupler body
Upper and lower traction table root.Specific calculated result is as shown in table 2-1.
Table 2-1 hitch model stress result
For the calculated result of master mould, structure is improved, traction table up and down mainly for coupler hook body and
Position is connected thereto to optimize.
As shown in Figure 1-3, first connecting portion, tool is arranged in gusset 5 and upper 1 coupling part of traction table for upper traction table 1
Having radius is the circular arc of 20mm (R5), and arc length 15mm, upper 1 inner arc radius of traction table is 70mm (R3), and length is
60mm；Outer arc radius is 150mm (R4), length 80mm.The distance between two circular arcs (i.e. width) are 33mm.Subtract simultaneously
Its few height, is highly 25mm (H1).For lower traction table 2, inner arc radius 70mm (R6), length 65mm, outside circle
Arc radius 150mm (R7), length 90mm.Interconnecting piece radius between inside and outside circular arc is 15mm (R8).Between two circular arcs away from
It is 33mm from (width).Increase its height simultaneously, is highly 35mm (H2).For upper traction table 1, lower traction table 2 and coupler body master
The connection side of body, while second connecting portion and third interconnecting piece (including circular arc) progress transition, arc radius R1 and R2 are set
For 30mm.
After upper traction table 1 improves, root connecting portion is more smooth, and after increasing height, contact area
It dramatically increases.
After lower traction table 2 improves, root and surrounding contact portion are more smooth, help to reduce stress concentration, increase
After length and height, the contact area with hook bolt can be increased, it is to be more uniformly stressed.
Similarly, the calculation of boundary conditions of hitch and sizing grid are the same with master mould, to improved coupler hook body
Carry out static strength calculating, check that coupler body node is averaged vonMises stress, most hazardous part appear in coupler body upper traction table 1,
Lower 2 root of traction table.Specific calculated result is as shown in table 3-1.
Table 3-1 hitch model stress result
Stress result comparison before and after the model refinement of table 3-2 hitch
Comparison result above (table 3-2) analyze and can be obtained, and is improved to traction table 1,2 structure of lower traction table on hitch
Afterwards, stress condition is improved.As can be seen from the above table, upper traction table 1,2 Root Stress of lower traction table can reduce by hundred
/ more than ten or so, illustrate that new structure can be effectively improved stress concentration, and reduce transition position irregularity stress value, to mentioning
The service life of high hitch has some reference value.
The present invention optimizes traction table structure, increases upper traction table 1,2 root transition arc of lower traction table as far as possible
Radius, optimization section rigidity variation, to solve the big situation of existing coupler body traction table stress.Simultaneously for upper traction table 1, under lead
The phenomenon that drawing 2 unbalance stress of platform should rationally control the gap of traction table 1, lower traction table 2, the appropriate height for reducing upper traction table 1
It spends, increases the height of lower traction table 2, while increasing the length of upper traction table 1, lower traction table 2, increase traction table is reached with this and is connect
The purpose of contacting surface product.
In addition, the embodiment of the present invention can also increase coupler tail pin diameter, 43mm is set by coupler yoke key diameter, to reduce
Coupler yoke key and hole fit clearance hang gap to reduce hitch and longitudinally connect, reduce the impact generated to drawbar coupler platform, and reduction is split
Line generates probability.
Through the above technical solutions, using coupler hook body provided by the invention, the coupler hook body include: upper traction table, under
Traction table, gusset, coupler body main body, further includes: the first connecting portion with circular arc concave surface connects the upper traction table and the muscle
Plate；Second connecting portion with circular arc concave surface connects the upper traction table and the coupler body main body；And with circular arc concave surface
Third interconnecting piece connects the lower traction table and the coupler body main body.The stress that the coupler hook body can reduce hitch is concentrated, and is mentioned
The high fatigue strength of hitch.
The optional embodiment of the embodiment of the present invention is described in detail in conjunction with attached drawing above, still, the embodiment of the present invention is simultaneously
The detail being not limited in above embodiment can be to of the invention real in the range of the technology design of the embodiment of the present invention
The technical solution for applying example carries out a variety of simple variants, these simple variants belong to the protection scope of the embodiment of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the embodiment of the present invention pair
No further explanation will be given for various combinations of possible ways.
It will be appreciated by those skilled in the art that implementing the method for the above embodiments is that can pass through
Program is completed to instruct relevant hardware, which is stored in a storage medium, including some instructions are used so that single
Piece machine, chip or processor (processor) execute all or part of the steps of each embodiment the method for the application.And it is preceding
The storage medium stated includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory
The various media that can store program code such as (RAM, Random Access Memory), magnetic or disk.
In addition, any combination can also be carried out between a variety of different embodiments of the embodiment of the present invention, as long as it is not
The thought of the embodiment of the present invention is violated, equally should be considered as disclosure of that of the embodiment of the present invention.
Claims (10)
1. a kind of coupler hook body, which is characterized in that the coupler hook body includes:
Upper traction table, lower traction table, gusset, coupler body main body, further includes:
First connecting portion with circular arc concave surface connects the upper traction table and the gusset；
Second connecting portion with circular arc concave surface connects the upper traction table and the coupler body main body；And
Third interconnecting piece with circular arc concave surface connects the lower traction table and the coupler body main body.
2. coupler hook body according to claim 1, which is characterized in that the circular arc concave of the first connecting portion is
20mm, length 15mm.
3. coupler hook body according to claim 1, which is characterized in that the second connecting portion and the third interconnecting piece
Circular arc concave is 30mm.
4. coupler hook body according to claim 1, which is characterized in that the inner arc radius of the upper traction table is
70mm, length 60mm.
5. coupler hook body according to claim 1, which is characterized in that the outer arc radius of the upper traction table is
150mm, length 80mm.
6. coupler hook body according to claim 1, which is characterized in that the height of the upper traction table is 25mm.
7. coupler hook body according to claim 1, which is characterized in that the inner arc radius of the lower traction table is
70mm, length 65mm.
8. coupler hook body according to claim 1, which is characterized in that the outer arc radius of the lower traction table is
150mm, length 90mm.
9. coupler hook body according to claim 1, which is characterized in that the height of the lower traction table is 35mm.
10. coupler hook body according to claim 1, which is characterized in that the upper traction table and the lower traction table it is interior
Side circular arc is 33mm at a distance from outer arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910505784.6A CN110171438B (en) | 2019-06-12 | 2019-06-12 | Coupler body of car coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910505784.6A CN110171438B (en) | 2019-06-12 | 2019-06-12 | Coupler body of car coupler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110171438A true CN110171438A (en) | 2019-08-27 |
| CN110171438B CN110171438B (en) | 2020-11-20 |
Family
ID=67698251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910505784.6A Active CN110171438B (en) | 2019-06-12 | 2019-06-12 | Coupler body of car coupler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110171438B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2235669A (en) * | 1989-08-04 | 1991-03-13 | Amsted Ind Inc | Pulling lug for railway vehicle coupler |
| US5145076A (en) * | 1990-11-13 | 1992-09-08 | Zeftek, Inc. | Plastic knuckle pin with annular relief grooves for preventing pin failure due to fatigue |
| CA2027987C (en) * | 1989-11-30 | 1998-12-22 | Russell George Altherr | Knuckle pin retainer for railway vehicle coupler |
| CN203996264U (en) * | 2014-08-22 | 2014-12-10 | 南车戚墅堰机车有限公司 | Coupler body traction table |
| CN108583612A (en) * | 2018-06-29 | 2018-09-28 | 中车齐齐哈尔车辆有限公司 | Hitch and its coupler body |
-
2019
- 2019-06-12 CN CN201910505784.6A patent/CN110171438B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2235669A (en) * | 1989-08-04 | 1991-03-13 | Amsted Ind Inc | Pulling lug for railway vehicle coupler |
| CA2027987C (en) * | 1989-11-30 | 1998-12-22 | Russell George Altherr | Knuckle pin retainer for railway vehicle coupler |
| US5145076A (en) * | 1990-11-13 | 1992-09-08 | Zeftek, Inc. | Plastic knuckle pin with annular relief grooves for preventing pin failure due to fatigue |
| CN203996264U (en) * | 2014-08-22 | 2014-12-10 | 南车戚墅堰机车有限公司 | Coupler body traction table |
| CN108583612A (en) * | 2018-06-29 | 2018-09-28 | 中车齐齐哈尔车辆有限公司 | Hitch and its coupler body |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110171438B (en) | 2020-11-20 |
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