CN204690514U - A kind of heavy haul railway resilient sleeper-bearing - Google Patents
A kind of heavy haul railway resilient sleeper-bearing Download PDFInfo
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- CN204690514U CN204690514U CN201520160729.5U CN201520160729U CN204690514U CN 204690514 U CN204690514 U CN 204690514U CN 201520160729 U CN201520160729 U CN 201520160729U CN 204690514 U CN204690514 U CN 204690514U
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Abstract
The utility model relates to a kind of heavy haul railway resilient sleeper-bearing, it comprises backing plate body, the positive and negative of described backing plate body is provided with some frustums of a cone for load-bearing energy-absorbing or hexagonal pyramid platform, wherein, the frustum of a cone in backing plate body front or the frustum of a cone of hexagonal pyramid platform and reverse side or hexagonal pyramid platform alternately shift to install; The frustum of a cone on the front of described backing plate body and/or reverse side is by stepped gradually high frustoconical zone, mediad both sides successively height of formation, and described frustoconical zone is symmetrical set.The utility model has ladder rigidity, pressure-bearing contact surface used by pressure difference is also different, achieve the automatic adjustment of Static stiffness, and backing plate elasticity can be increased like this and then increase the elasticity of track, slow down train by time to the high shear force of track moment and strong pressure.
Description
Technical field
The utility model relates to resilient sleeper-bearing and production technology thereof under a kind of heavy haul railway iron chair, is specially resilient sleeper-bearing under the heavy heavy haul railway iron chairs of 30 tons of axles.
Background technology
China railways develops heavy haul transport from the 80's of 20th century, starts late, but development rapidly.Since 2006, along with Datong-Qinhuangdao Railway 20,000 tons of unit car start in a large number and the heavy general purpose freight car of 23 t axles is promoted the use of in system-wide.The rail channel project implementation of the middle and south, Shanxi to China energy development strategy, build Large-scale Coal production base, ensure coastal and East China coal demand, ensure Chinese energy safety, strengthening coal transport facility ability and coal fortune system transfer safety and implement Central China's emerging strategy, promote regional economic development along the line, build a Harmonious Society, to vitalize national stock assets significant.
Track under heavy haul transport condition, compared with general track, bears that train axle is heavy is increased to 25t by original more than 10 ton, so that maximumly reaches 35t; Train traction gross weight, is increased to maximum tens thousand of ton from original more than 1000 ton, and the subgrade bed heavily cutting out railway subjects larger load.Heavily cut out the effect of condition Train to bedding and have more complicated dynamic effect.Therefore aggravate the accumulation of the damage of track component, railway roadbed permanent set, have a strong impact on traffic safety.
Utility model content
Technical problem to be solved in the utility model is to provide a kind ofly has resilient sleeper-bearing under the heavy haul railway iron chair of ladder rigidity.
The utility model adopts following technical scheme:
A kind of heavy haul railway resilient sleeper-bearing, it comprises backing plate body, the positive and negative of described backing plate body is provided with some frustums of a cone or hexagonal pyramid platform, wherein, the frustum of a cone in backing plate body front or the frustum of a cone of hexagonal pyramid platform and reverse side or hexagonal pyramid platform alternately shift to install;
Its key technology is: the frustum of a cone on the front of described backing plate body and/or reverse side or hexagonal pyramid platform are by stepped gradually high frustoconical zone, mediad both sides successively height of formation, and described frustoconical zone is symmetrical set.
As further improvement of the utility model, described frustum of a cone bottom surface radius of a circle is equal, and described hexagonal pyramid platform bottom surface is regular hexagon, and the base of each hexagonal pyramid platform is equal.
As further improvement of the utility model, adjacent frustum of a cone bottom surface circle is tangent or crossing, and two adjacent hexagonal pyramid platforms share a base.
As further improvement of the utility model, the surrounding of described backing plate body is semicircular platforms or half hexagonal pyramid platform, and the frustum of a cone or the hexagonal pyramid platform height of described semicircular platforms or half hexagonal pyramid platform and its frustoconical zone, place are equal.
As further improvement of the utility model, described resilient sleeper-bearing adopts quality and the homogeneous TPEE thermoplastic polyester elastomeric material of hardness to make.
As further improvement of the utility model, described frustoconical zone comprises the first frustoconical zone being positioned at described backing plate body center and the second frustoconical zone being symmetricly set in described first left and right sides, frustoconical zone, and the first frustum height being arranged in described first frustoconical zone is less than the second frustum being arranged in described second frustoconical zone.
As further improvement of the utility model, described frustoconical zone comprises the first frustoconical zone being positioned at described backing plate body center and the second frustoconical zone being symmetricly set in described first left and right sides, frustoconical zone and the 3rd frustoconical zone, and the first frustum height being arranged in described first frustoconical zone is less than the second frustum being arranged in described second frustoconical zone; The the second frustum height being arranged in described second frustoconical zone is less than the 3rd frustum being arranged in described 3rd frustoconical zone.
As further improvement of the utility model, the frustum of a cone described in three or four surrounds a depressed part, and the opposing face correspondence of described depressed part is provided with the frustum of a cone.
The utility model also provides a kind of production technology of above-mentioned heavy haul railway resilient sleeper-bearing on the other hand.
It comprises the steps:
(1) raw material drying process: adopt drying plant to dry, bake out temperature is 80 DEG C-100 DEG C, ensures that raw material meet injection mo(u)lding requirement, i.e. water content≤0.2%;
(2) injection mo(u)lding: adopt injection machine to carry out injection mo(u)lding, heat in barrel raw material after drying process being joined injection machine, is divided into eight sections from the reinforced temperature to nozzle place in barrel, heating-up temperature respectively: one section 215 ± 10 DEG C, two sections 230 ± 10 DEG C, three sections 235 ± 10 DEG C, four sections 230 ± 10 DEG C, five sections 225 ± 10 DEG C, six sections 220 ± 10 DEG C, seven sections 215 ± 10 DEG C, eight sections 210 ± 10 DEG C;
Then carry out locked mode, injection moulding, pressurize, cooling, Qi Mo complete injection mo(u)lding;
(3) water dividing gap: taken out from die cavity by the product after injection mo(u)lding, uses water gap cutter to remove burr, reaches the requirement meeting and produce drawing and product technology;
(4) verification test: by qualified product warehousing.
Further, in step (2):
Pressure >=the 100T of described locked mode;
Wherein, injection moulding adopts three grades of Shooting Techniques, and its concrete technology parameter is:
The concrete technology parameter of described pressurize technique is:
The cool time of described cooling procedure is >=40S.
Good effect of the present utility model is as follows:
The frustum of a cone that the utility model is alternately shifted to install by positive and negative or hexagonal pyramid platform form pressure-bearing contact surface, the frustum of a cone or hexagonal pyramid platform are by stepped gradually high frustoconical zone, mediad both sides successively height of formation, the frustoconical zone of differing heights forms different pressure-bearing contact surfaces, the frustoconical zone of differing heights has different Static stiffness, therefore resilient sleeper-bearing is made to have ladder rigidity, pressure-bearing contact surface used by pressure difference is also different, achieve the automatic adjustment of Static stiffness, and backing plate elasticity can be increased like this, and then increase the elasticity of track, slow down train by time to track moment high shear force and strong pressure.
The resilient sleeper-bearing adopting quality and the homogeneous thermoplastic polyester elastomeric material of hardness to make can adjust in the difference in height by the adjustment frustum of a cone or hexagonal pyramid platform resilient sleeper-bearing in use pressure-bearing contact area then adjust the Static stiffness of backing plate, and ensure that the mechanical strength of resilient sleeper-bearing simultaneously.
Accompanying drawing explanation
Accompanying drawing 1 is the sectional structure schematic diagram of the utility model embodiment 1.
Accompanying drawing 2 is the plan structure schematic diagram of the utility model embodiment 1.
What accompanying drawing 3 was the utility model embodiment 1 looks up structural representation.
Accompanying drawing 4 is the sectional structure schematic diagram of the utility model embodiment 2.
Accompanying drawing 5 is the sectional structure schematic diagram of the utility model embodiment 3.
Accompanying drawing 6 is the plan structure schematic diagram of the utility model embodiment 3.
In the accompanying drawings: 1 backing plate body, 10 first frustoconical zones, 20 second frustoconical zones, 30 the 3rd frustoconical zones, 100 semicircular platforms, 200 depressed parts, 101 first frustums, 201 second frustums, 301 the 3rd frustums of a cone.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Resilient sleeper-bearing under a kind of heavy haul railway iron chair as shown in accompanying drawing 1-4, it comprises backing plate body 1, the positive and negative of described backing plate body 1 is provided with some frustums of a cone, wherein, the frustum of a cone in backing plate body 1 front and the frustum of a cone of reverse side alternately shift to install, namely the frustum of a cone described in three or four surrounds a depressed part 200, and the opposing face correspondence of described depressed part 200 is provided with the frustum of a cone; In the present embodiment, the frustum of a cone described in four surrounds a depressed part 200, and the end face of the described frustum of a cone forms the pressure-bearing contact surface of resilient sleeper-bearing and iron chair and ground.The frustum of a cone on the front of described backing plate body 1 and/or reverse side is by stepped gradually high frustoconical zone, mediad both sides successively height of formation, and described frustoconical zone is symmetrical set.Namely the frustum height being arranged in the frustoconical zone of central authorities is minimum, the frustum altitude module being positioned at the frustoconical zone of both sides increases, but all frustum of a cone height being arranged in same frustoconical zone are equal, and described stepped frustoconical zone is symmetrical arranged relative to the center line of resilient sleeper-bearing.
The frustoconical zone of differing heights forms different pressure-bearing contact surfaces, the frustoconical zone of differing heights has different Static stiffness, therefore resilient sleeper-bearing is made to have ladder rigidity, pressure-bearing contact surface used by pressure difference is also different, achieve the automatic adjustment of Static stiffness, and backing plate elasticity can be increased like this and then increase the elasticity of track, slow down train by time to the high shear force of track moment and strong pressure.
When being namely subject to less pressure, be positioned at the two frustoconical zone bearing strains that backing plate both sides height is the highest, now highly lower frustoconical zone does not stress.
Described frustum of a cone bottom surface radius of a circle is equal, and adjacent frustum of a cone bottom surface circle is tangent or crossing.The surrounding of described backing plate body 1 is semicircular platforms 100, and described semicircular platforms 100 is equal with the frustum of a cone height of its frustoconical zone, place.Described resilient sleeper-bearing adopts quality and the homogeneous thermoplastic polyester elastomeric material of hardness to make.The resilient sleeper-bearing adopting quality and the homogeneous thermoplastic polyester elastomeric material of hardness to make at the Static stiffness being adjusted resilient sleeper-bearing by adjustment frustum of a cone difference in height, and can ensure that the mechanical strength of resilient sleeper-bearing simultaneously.
Described TPEE(thermoplastic polyester elastomer) be specially block copolymer containing the hard section of polyester and polyester soft segment.Wherein polyester soft segment and uncrystallized polyester form the hard section partially crystallizable of amorphous phase polyester and form crystalline domains, play physical crosslinking point.TPEE has the elasticity of rubber and the intensity of engineering plastics; Give its elasticity, make it resemble rubber for soft section; Hard section gives its processing characteristics, makes it resemble plastics; With rubber phase ratio, it has better processing characteristics and longer application life; Compared with engineering material, there is feature that intensity is high equally, and pliability and dynamic mechanical better.
Resilient sleeper-bearing plate body of the present utility model all devises the frustum of a cone of two kinds of height due to upper and lower surface, after load is added to first setting value, it is only frustum of a cone contact high outside backing plate both sides, bear loading force, the corresponding steel plate that loads can have a displacement downwards, now corresponding rigidity value is the first rigidity value, when load continues to increase, slowly become short after the high frustum of a cone on backing plate is stressed, when the height of the high frustum of a cone and the short frustum of a cone contour time, all frustums of a cone on resilient sleeper-bearing are all stressed, contact area increases, the displacement that now corresponding loading steel plate is downward is the second rigidity value.By designing the ladder rigidity of backing plate, ensure the elasticity adding backing plate while backing plate has certain rigidity.
Embodiment 1
Shown in accompanying drawing 1-3, for a kind of resilient sleeper-bearing with two joint ladder rigidity, it comprises backing plate body 1, the positive and negative of described backing plate body 1 is provided with some frustums of a cone for load-bearing energy-absorbing, wherein, the frustum of a cone in backing plate body 1 front and the frustum of a cone of reverse side alternately shift to install, and the frustum of a cone namely described in four surrounds a depressed part 200, and the opposing face correspondence of described depressed part 200 is provided with the frustum of a cone; The end face of the described frustum of a cone forms the pressure-bearing contact surface of resilient sleeper-bearing and iron chair and ground.The frustum of a cone on the obverse and reverse of described backing plate body 1 is by stepped gradually high frustoconical zone, mediad both sides successively height of formation, and described frustoconical zone is symmetrical set.
Described frustoconical zone comprises the first frustoconical zone 10 being positioned at described backing plate body 1 central authorities and the second frustoconical zone 20 being symmetricly set in described first left and right sides, frustoconical zone 10, and the first frustum 101 being arranged in described first frustoconical zone 10 is highly less than the second frustum 201 being arranged in described second frustoconical zone 20.
Wherein, the thickness between the positive and negative two pressure-bearing contact surfaces of the first described frustoconical zone 10 is 9mm, and the thickness between the positive and negative two pressure-bearing contact surfaces of the second described frustoconical zone 20 is 11.5-12.5mm; The height of the second frustum 201 in the second described frustoconical zone 20 is 4.5mm, and bottom surface diameter of a circle is 19mm, and end face diameter of a circle is 8.5mm.
Embodiment 2
Shown in accompanying drawing 4, for a kind of resilient sleeper-bearing with three joint ladder rigidity, namely described frustoconical zone comprises the first frustoconical zone 10 being positioned at described backing plate body 1 central authorities and the second frustoconical zone 20 being symmetricly set in described first left and right sides, frustoconical zone 10 and the 3rd frustoconical zone 30, and the first frustum 101 being arranged in described first frustoconical zone 10 is highly less than the second frustum 201 being arranged in described second frustoconical zone 20; The second frustum 201 being arranged in described second frustoconical zone 20 is highly less than the 3rd frustum 301 being arranged in described 3rd frustoconical zone 30.
Wherein, the thickness between the positive and negative two pressure-bearing contact surfaces of the first frustoconical zone 10 is 8.6mm, and the thickness between the positive and negative two pressure-bearing contact surfaces of the second described frustoconical zone 20 is 10.3mm; Thickness between the positive and negative two pressure-bearing contact surfaces of the 3rd described frustoconical zone 30 is 11.5-12.5mm; The height of the 3rd frustum of a cone 301 in the 3rd described frustoconical zone 30 is 4.5mm, and bottom surface diameter of a circle is 22.5mm, and end face diameter of a circle is 11.5mm.
The production technology of described heavy haul railway resilient sleeper-bearing comprises the steps:
(1) raw material drying process: drying plant: europeanized removal moisture drying combination, model is SDD-1200U/700H-GB(drying capacity 192kg/hr); Detecting instrument is moisture fast detector, and model is XM-60;
Bake out temperature is 80 DEG C-100 DEG C, ensures that raw material meet injection mo(u)lding requirement.Produce every 4 hours inspection moisture in batches once, guarantee raw material water satisfied production requirement (water content≤0.2%);
(2) injection mo(u)lding: adopt injection machine to carry out injection mo(u)lding, heat in barrel raw material after drying process being joined injection machine, is divided into eight sections from the reinforced temperature to nozzle place in barrel, heating-up temperature respectively: one section 215 ± 10 DEG C, two sections 230 ± 10 DEG C, three sections 235 ± 10 DEG C, four sections 230 ± 10 DEG C, five sections 225 ± 10 DEG C, six sections 220 ± 10 DEG C, seven sections 215 ± 10 DEG C, eight sections 210 ± 10 DEG C;
Then carry out locked mode, injection moulding, pressurize, cooling, Qi Mo complete injection mo(u)lding; Wherein, injection moulding, pressurize, cooling, storing, die opening and closing are a cycle period, described cycle period: >=90S;
Wherein, mold closing pressure >=100T;
Injection moulding adopts three grades of Shooting Techniques, and its concrete technology parameter is:
The concrete technology parameter of described pressurize technique is:
The cool time of described cooling procedure is >=40S;
(3) water dividing gap: taken out from die cavity by the product after injection mo(u)lding, uses water gap cutter to remove burr, reaches the requirement meeting and produce drawing and product technology;
(4) verification test: by qualified product warehousing.
The physical property of heavy haul railway resilient sleeper-bearing described in the utility model is in table 1:
Table 1
Static stiffness; Under iron chair, the Static stiffness of resilient sleeper-bearing is 50kN/mm ± 10kN/mm.
Springrate ratio: under iron chair, the springrate ratio of resilient sleeper-bearing is not more than 2.0.
Fatigue behaviour: under iron chair, resilient sleeper-bearing is after 3,000,000 fatigue tests, Static stiffness rate of change is not more than 30%.
Under the iron chair that the Ministry of Railways issues, the Static stiffness index of resilient sleeper-bearing is 40-60 kN/mm, and the computational methods of described Static stiffness are:
，
Wherein:
---the minimum load that resilient sleeper-bearing applies under tested iron chair, 20 kN;
---the maximum load that resilient sleeper-bearing applies under tested iron chair, 90 kN;
---tested elastic plate is being loaded on
time displacement, mm;
---tested elastic plate is being loaded on
time displacement, mm;
---Static stiffness, kN/mm.
Under iron chair, the thickness of resilient sleeper-bearing also has strict requirement, and when thickness is less, need the TPEE adopting hardness higher, the hardness of the material adopted is higher,
with
then less, wherein
with
on the one hand relevant with the hardness of material itself, another aspect is relevant with the contact area of resilient sleeper-bearing, therefore needs resilient sleeper-bearing to be arranged to stepped, by changing its contact area difference at various pressures, arrives the requirement of Static stiffness.
The utility model, by arranging the gradually low stepped frustoconical zone of two side direction central authorities, can be arranged the ladder rigidity that two joints are above, can be controlled the Static stiffness of resilient sleeper-bearing by the frustoconical zone controlling each height.Because domestic TPEE stiffness is poor, the structure of resilient sleeper-bearing described in the utility model can adapt to the TPEE material of different hardness, namely firmness change wider range of adaptation material can ensure the stability of product and qualification rate high, and can constantly adjust the contact area that mould changes the frustoconical zone of differing heights in process of the test, until reach the contact area matched with material hardness.For the resilient sleeper-bearing of two joint rigidity shown in accompanying drawing 1, when offering mould, make the contact area of frustoconical zone, both sides second 20 less, the contact area of the first frustoconical zone 10 of middle section is larger, such W2 then can be larger, in process of the test, according to hardness and the experimental data of material, can constantly process mould milling machine, the groove of the first frustoconical zone 10 is deepened, become the second frustum 201 of the second frustoconical zone 20, so just change the ratio of the contact area of the first frustoconical zone 10 and the second frustoconical zone 20, thus change the Static stiffness of resilient sleeper-bearing, the hardness of better adaptation material.
According to the TPEE of different hardness, different moulds can be designed, make the cotton knot of the first frustoconical zone 10 and the second frustoconical zone different, easy to use, strong adaptability.
Embodiment 3
Resilient sleeper-bearing under a kind of heavy haul railway iron chair as shown in accompanying drawing 5 and accompanying drawing 6, its difference in embodiment 1 is, replace the frustum of a cone with hexagonal pyramid platform, two, hexagonal pyramid platform base connects, and forms cellular structure.Its manufacture craft, action principle and technique effect are identical with embodiment 1.
Last it is noted that above embodiment is only in order to illustrate the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in previous embodiment, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of the utility model embodiment technical scheme.
Claims (8)
1. a heavy haul railway resilient sleeper-bearing, it comprises backing plate body (1), the positive and negative of described backing plate body (1) is provided with some frustums of a cone or hexagonal pyramid platform, and wherein, the frustum of a cone in backing plate body (1) front or the frustum of a cone of hexagonal pyramid platform and reverse side or hexagonal pyramid platform alternately shift to install;
It is characterized in that: the frustum of a cone on the front of described backing plate body (1) and/or reverse side or hexagonal pyramid platform are by stepped gradually high frustoconical zone, mediad both sides successively height of formation, and described frustoconical zone is symmetrical set.
2. a kind of heavy haul railway resilient sleeper-bearing according to claim 1, is characterized in that: described frustum of a cone bottom surface radius of a circle is equal, and described hexagonal pyramid platform bottom surface is regular hexagon, and the base of each hexagonal pyramid platform is equal.
3. a kind of heavy haul railway resilient sleeper-bearing according to claim 1 and 2, is characterized in that: adjacent frustum of a cone bottom surface circle is tangent or crossing, and two adjacent hexagonal pyramid platforms share a base.
4. a kind of heavy haul railway resilient sleeper-bearing according to claim 3, it is characterized in that: the surrounding of described backing plate body (1) is semicircular platforms (100) or half hexagonal pyramid platform, the frustum of a cone or the hexagonal pyramid platform height of described semicircular platforms (100) or half hexagonal pyramid platform and its frustoconical zone, place are equal.
5. a kind of heavy haul railway resilient sleeper-bearing according to claim 1, is characterized in that: described resilient sleeper-bearing adopts quality and the homogeneous thermoplastic polyester elastomeric material of hardness to make.
6. a kind of heavy haul railway resilient sleeper-bearing according to claim 1, it is characterized in that: described frustoconical zone comprises the first frustoconical zone (10) being positioned at described backing plate body (1) central authorities and the second frustoconical zone (20) being symmetricly set in described first frustoconical zone (10) left and right sides, and the first frustum (101) being arranged in described first frustoconical zone (10) is highly less than the second frustum (201) being arranged in described second frustoconical zone (20).
7. a kind of heavy haul railway resilient sleeper-bearing according to claim 1, it is characterized in that: described frustoconical zone comprises the first frustoconical zone (10) being positioned at described backing plate body (1) central authorities and the second frustoconical zone (20) and the 3rd frustoconical zone (30) that are symmetricly set in described first frustoconical zone (10) left and right sides, and the first frustum (101) being arranged in described first frustoconical zone (10) is highly less than the second frustum (201) being arranged in described second frustoconical zone (20); The second frustum (201) being arranged in described second frustoconical zone (20) is highly less than the 3rd frustum (301) being arranged in described 3rd frustoconical zone (30).
8. a kind of heavy haul railway resilient sleeper-bearing according to claim 1, is characterized in that: the frustum of a cone described in three or four surrounds a depressed part (200), and the opposing face correspondence of described depressed part (200) is provided with the frustum of a cone.
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| CN201520160729.5U CN204690514U (en) | 2015-03-20 | 2015-03-20 | A kind of heavy haul railway resilient sleeper-bearing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104775337A (en) * | 2015-03-20 | 2015-07-15 | 河北铁科翼辰橡胶制品有限公司 | Resilient tie plate for heavy haul railway and production process of resilient tie plate |
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2015
- 2015-03-20 CN CN201520160729.5U patent/CN204690514U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104775337A (en) * | 2015-03-20 | 2015-07-15 | 河北铁科翼辰橡胶制品有限公司 | Resilient tie plate for heavy haul railway and production process of resilient tie plate |
| CN104775337B (en) * | 2015-03-20 | 2017-06-23 | 河北铁科翼辰新材科技有限公司 | A kind of heavy haul railway resilient sleeper-bearing and its production technology |
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