CN113004582B - Rubber base plate for rail transit, preparation method and rail transit road section - Google Patents

Rubber base plate for rail transit, preparation method and rail transit road section Download PDF

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Publication number
CN113004582B
CN113004582B CN202110185366.0A CN202110185366A CN113004582B CN 113004582 B CN113004582 B CN 113004582B CN 202110185366 A CN202110185366 A CN 202110185366A CN 113004582 B CN113004582 B CN 113004582B
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shaped
strip
row
rail transit
truncated cone
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CN113004582A (en
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王博
厉敏辉
王新
林坚勋
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Zhejiang Tiantie Industry Co Ltd
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Zhejiang Tiantie Industry Co Ltd
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Priority to CN202110185366.0A priority Critical patent/CN113004582B/en
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Priority to PCT/CN2021/118802 priority patent/WO2022170763A1/en
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L7/00—Compositions of natural rubber
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B9/00—Fastening rails on sleepers, or the like
    • E01B9/68—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B9/00—Fastening rails on sleepers, or the like
    • E01B9/68—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair
    • E01B9/681—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair characterised by the material
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B9/00—Fastening rails on sleepers, or the like
    • E01B9/68—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair
    • E01B9/685—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair characterised by their shape
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2296—Oxides; Hydroxides of metals of zinc
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Railway Tracks (AREA)

Abstract

The invention provides a rubber base plate for rail transit, a preparation method and a rail transit road section. The rail transit road section comprises a plurality of sleepers, a rail bottom support, a rubber base plate for rail transit and two steel rails, wherein the rubber base plate for rail transit comprises a plate body and a protrusion part arranged on one surface of the plate body, the protrusion part comprises a plurality of groups of protrusion parts, the plurality of groups of protrusion parts are distributed from one edge of the plate body to the other edge opposite to the one edge, and meanwhile, the rubber base plate for rail transit comprises the following components in parts by weight: the rubber base plate for the rail transit can absorb the pressure of vehicles on a rail transit road section according to actual road conditions, so that the deformation of the whole base plate is similar, and the stability of vehicles running on the rail transit road section is kept.

Description

Rubber base plate for rail transit, preparation method and rail transit road section
Technical Field
The invention relates to a rubber base plate, in particular to a rubber base plate for rail transit, a preparation method and a rail transit road section.
Background
With the rapid development of rail transit, a large number of rail transit vibration-damping and noise-reducing schemes are applied to urban rail transit, wherein the most widely applied technical scheme is to arrange a rubber base plate between a steel rail and a concrete sleeper for buffering high-speed vibration and impact generated when a vehicle passes through the rail, so that a roadbed and the sleeper are protected.
In practical applications, due to environmental restrictions, the track traffic sections are not all straight roads, nor are the installation pavements of the track traffic sections or the rail foot surfaces for installing the rails flat. However, when the vehicle passes through a curve or an uneven area of a track traffic section, uneven pressure is generated on the rail and the rubber pad arranged below the rail, which may cause uneven deformation and even damage failure of the rubber pad in the prior art, and further cause displacement of the track, thereby affecting the normal operation of the track.
Disclosure of Invention
The present invention has been made to solve the above problems, and an object of the present invention is to provide a rubber pad for rail transit, which has a simple structure and can be more widely applied to various types of rail transit sections.
The invention provides a rubber base plate for rail transit, which is characterized by comprising the following components in parts by weight: a plate body; and the protruding part is arranged on one surface of the plate body, wherein the protruding part comprises a plurality of groups of protruding parts, the plurality of groups of protruding parts are distributed from one edge of the plate body to the other edge opposite to the one edge, and the rubber base plate for rail transit comprises the following components in parts by weight: 100 parts of matrix rubber, 20-100 parts of filler, 0-5 parts of silane coupling agent, 5-35 parts of activator, 0-15 parts of plasticizer, 3-10 parts of pigment, 1-3 parts of anti-aging agent, 3-15 parts of functional auxiliary agent, 0.3-2.5 parts of vulcanizing agent and 2-8 parts of vulcanization accelerator.
In the rubber tie plate for rail transit provided by the invention, the rubber tie plate can also have the following characteristics: wherein the cross-sectional areas of the sets of raised elements decrease progressively from one edge of the plate body to the other.
In the rubber tie plate for rail transit provided by the invention, the rubber tie plate can also have the following characteristics: wherein, the protruding portion includes: a bar distribution protrusion provided on one surface of the plate body; and a point distribution protrusion portion provided on the same surface as the bar distribution protrusion portion, the bar distribution protrusion portion being formed adjacent to the point distribution protrusion portion, the plate body being integrally formed with the bar distribution protrusion portion and the point distribution protrusion portion.
In the rubber tie plate for rail transit provided by the invention, the rubber tie plate can also have the following characteristics: the strip distribution protrusion part comprises at least one strip protrusion, the strip protrusion extends along one edge of the plate body to form the strip protrusion, the point distribution protrusion part comprises a plurality of table-shaped protrusions, and the plurality of table-shaped protrusions are arranged on one side of the long side of the strip protrusion and distributed to the other edge opposite to the one edge.
In the rubber tie plate for rail transit provided by the invention, the rubber tie plate can also have the following characteristics: the strip-shaped protrusions are multiple, strip-shaped grooves are formed between every two adjacent strip-shaped protrusions, multiple rows of the platform-shaped protrusions are formed in the length direction of the strip-shaped protrusions, and the platform-shaped protrusions in every two adjacent rows are arranged in a staggered mode.
The rubber base plate for rail transit provided by the invention can also have the following characteristics: the strip-shaped protrusions are more than three, the strip-shaped grooves are at least two, the width of each strip-shaped groove is gradually reduced from one edge to the other edge, the plurality of the truncated cone-shaped protrusions are provided with cross sections, the cross sections of the truncated cone-shaped protrusions in each row are the same in area, the cross sections of the truncated cone-shaped protrusions in each row are gradually reduced from one edge to the other edge, and the upper surfaces of the strip-shaped protrusions are flush with the upper surfaces of the truncated cone-shaped protrusions.
In the rubber tie plate for rail transit provided by the invention, the rubber tie plate can also have the following characteristics: wherein, the number of the strip-shaped bulges is three, and the strip-shaped bulges are respectively a first strip-shaped bulge, a second strip-shaped bulge and a third strip-shaped bulge along one edge,
a first groove is arranged between the first strip-shaped protrusion and the second strip-shaped protrusion, a second groove is arranged between the second strip-shaped protrusion and the third protrusion,
the width of the first strip-shaped protrusion is 10mm-15mm, the width of the second strip-shaped protrusion is 19mm-20mm, the width of the third strip-shaped protrusion is 21mm-22mm,
the point distribution protrusion part comprises a plurality of truncated cone-shaped protrusions which are arranged on one side of the long side of the strip-shaped protrusion and distributed to the other edge opposite to one edge,
six rows of the truncated cone-shaped bulges are formed in the length direction of the strip-shaped bulges, one side of the long side edge of each strip-shaped bulge is provided with a first row of truncated cone-shaped bulges, a second row of truncated cone-shaped bulges, a third row of truncated cone-shaped bulges, a fourth row of truncated cone-shaped bulges, a fifth row of truncated cone-shaped bulges and a sixth row of truncated cone-shaped bulges, the distance between every two adjacent rows of truncated cone-shaped bulges is 15-20 mm, and the area of the cross section of each first row of truncated cone-shaped bulges is 100mm 2 -120mm 2 The cross-sectional area of the second row of mesa-shaped projections was 100mm 2 -120mm 2 And the area of the cross section of the third row of the truncated cone-shaped protrusions is 70mm 2 -90mm 2 The cross-sectional area of the fourth row of mesa-shaped projections was 70mm 2 -90mm 2 The area of the cross section of the fifth row of the truncated cone-shaped projections is 40mm 2 -60mm 2 And the area of the cross section of the sixth row of the truncated cone-shaped protrusions is 40mm 2 -60mm 2 。
In the rubber tie plate for rail transit provided by the invention, the rubber tie plate can also have the following characteristics: the protruding portion is a strip distribution protruding portion which comprises a plurality of strip-shaped protrusions, the strip-shaped protrusions extend along one edge of the plate body, the plurality of strip-shaped protrusions are distributed from one edge of the plate body to the other edge opposite to the one edge, the width of each strip-shaped protrusion is gradually reduced from the one edge to the other edge, and a strip-shaped groove is formed between every two adjacent strip-shaped protrusions.
In the rubber tie plate for rail transit provided by the invention, the rubber tie plate can also have the following characteristics: wherein the width of all the strip-shaped grooves is equal.
In the rubber tie plate for rail transit provided by the invention, the rubber tie plate can also have the following characteristics: the width of the first strip-shaped protrusion is 19mm-21mm, the width of the second strip-shaped protrusion is 17mm-19mm, the width of the third strip-shaped protrusion is 10mm-12mm, the width of the fourth strip-shaped protrusion is 9mm-10mm, the width of the fifth strip-shaped protrusion is 8mm-9mm, the width of the sixth strip-shaped protrusion is 7mm-8mm, the width of the seventh strip-shaped protrusion is 6mm-7mm, the width of the eighth strip-shaped protrusion is 5mm-6mm, the width of the ninth strip-shaped protrusion is 4mm-5mm, the width of the tenth strip-shaped protrusion is 4mm-5mm, and the width of the eleventh strip-shaped protrusion is 2mm-3mm.
In the rubber tie plate for rail transit provided by the invention, the rubber tie plate can also have the following characteristics: the plurality of the truncated cone-shaped protrusions are distributed from one edge of the plate body to the other edge opposite to the one edge, the plurality of the truncated cone-shaped protrusions are provided with cross sections, the cross sections of the truncated cone-shaped protrusions in each row are the same in area, and the cross sections of the truncated cone-shaped protrusions in each row are gradually reduced from one edge to the other edge.
In the rubber tie plate for rail transit provided by the invention, the rubber tie plate can also have the following characteristics: wherein, the adjacent two rows of the platform-shaped bulges are arranged in a staggered way.
In the rubber tie plate for rail transit provided by the invention, the rubber tie plate can also have the following characteristics: wherein, the intervals of the two adjacent rows of the mesa-shaped protrusions are equal.
The rubber base plate for rail transit provided by the invention can also have the following characteristics: wherein, the platform-shaped bulges are formed with 10 rows along the length direction of the plate body, and respectively comprise a first row of platform-shaped bulges, a second row of platform-shaped bulges, a third row of platform-shaped bulges, a fourth row of platform-shaped bulges, a fifth row of platform-shaped bulges, a sixth row of platform-shaped bulges, a seventh row of platform-shaped bulges, an eighth row of platform-shaped bulges, a ninth row of platform-shaped bulges and a tenth row of platform-shaped bulges along one edge, each row of platform-shaped bulges comprises 8 platform-shaped bulges in the first row of platform-shaped bulges, the third row of platform-shaped bulges, the fifth row of platform-shaped bulges, the seventh row of platform-shaped bulges and the ninth row of platform-shaped bulges, and each row of platform-shaped bulges comprises 8 platform-shaped bulges in the second row of platform-shaped bulges, the fourth row of platform-shaped bulges, the sixth row of platform-shaped bulges, the eighth row of platform-shaped bulges and the tenth row of platform-shaped bulgesEach row of the truncated cone-shaped protrusions comprises 9 truncated cone-shaped protrusions, and the area of the cross section of the truncated cone-shaped protrusion in the first row of the truncated cone-shaped protrusions is 130mm 2 -160mm 2 And the cross-sectional area of the mesa-shaped projections in the second row of mesa-shaped projections is 130mm 2 -160mm 2 And the cross-sectional area of the mesa-shaped projections in the third row of mesa-shaped projections is 90mm 2 -120mm 2 The cross-sectional area of the mesa-shaped projections in the fourth row of mesa-shaped projections was 90mm 2 -120mm 2 And the cross section area of the truncated cone-shaped protrusion in the fifth row of truncated cone-shaped protrusions is 60mm 2 -80mm 2 In the sixth row of the mesa-shaped projections, the area of the cross section of the mesa-shaped projections is 60mm 2 -80mm 2 And the cross section area of the mesa-shaped protrusion in the seventh row of mesa-shaped protrusions is 40mm 2 -50mm 2 The cross-sectional area of the mesa-shaped projections in the eighth row of mesa-shaped projections was 40mm 2 -50mm 2 In the ninth row of the truncated projections, the area of the cross section of the truncated projections is 20mm 2 -30mm 2 The cross-sectional area of the mesa-shaped projections in the tenth row of mesa-shaped projections was 20mm 2 -30mm 2 。
The rubber base plate for rail transit provided by the invention can also have the following characteristics: wherein the upper surfaces of the protruding parts are flush.
The rubber tie plate for rail transit provided by the invention can also have the following characteristics: and a plurality of grooves formed on the other surface of the plate body.
The rubber base plate for rail transit provided by the invention can also have the following characteristics: the plurality of grooves are parallel to each other, and the extending direction of the plurality of grooves is consistent with the length direction of the strip-shaped protrusions.
In the rubber tie plate for rail transit provided by the invention, the rubber tie plate can also have the following characteristics: wherein the width of the multi-channel groove is gradually changed from one edge to the other edge.
In the rubber tie plate for rail transit provided by the invention, the rubber tie plate can also have the following characteristics: wherein, multichannel slot is multichannel curvilinear figure slot.
In the rubber tie plate for rail transit provided by the invention, the rubber tie plate can also have the following characteristics: the plurality of grooves are a plurality of strip-shaped grooves which are parallel to each other and are uniformly distributed, and the extending direction of the plurality of grooves is vertical to the length direction of the strip-shaped protrusions.
In the rubber tie plate for rail transit provided by the invention, the rubber tie plate can also have the following characteristics: wherein, the track still has the rail collet, and this rail collet is installed in the below of rail, and the rubber tie plate for the track traffic is installed between rail and rail collet, and the track has two parallel arrangement's rail, and the installation slope of rail collet is 1: (30-50).
The invention also provides a preparation method of the rubber tie plate for rail transit, which is used for preparing any one of the rubber tie plates for rail transit and has the characteristics that the preparation method comprises the following steps: step 1, adding matrix rubber into an internal mixer, refining for 5-8 min, adding an active agent, an anti-aging agent, a functional assistant, a silane coupling agent and a pigment, carrying out internal mixing for 1-2 min, adding a filler accounting for 30-40% of the total weight of the filler, mixing for 3-8 min, finally adding the rest filler and a plasticizer, mixing for 3-5 min, controlling the internal temperature of the internal mixer to be 95-125 ℃, introducing and lifting a bolt to discharge rubber, cooling, and standing for 8-24 h to obtain a rubber in section A; step 2, adding the material of the section A into an open mill for hot milling, controlling the temperature of a roller of the open mill to be 40-55 ℃, adding a vulcanizing agent and a vulcanization accelerator, turning over, packaging, performing thin pass at a small roller spacing, discharging, cooling and standing to obtain rubber of the section B; step 3, cutting the section B of glue according to the requirement to obtain a glue blank; and 4, putting the rubber blank into a corresponding mold, and vulcanizing to obtain the rubber base plate for subway rail transit.
The invention also provides a rail transit section, which is characterized by comprising the following components: a steel rail; and the rubber base plate is matched with the steel rail of the track for use, wherein the rubber base plate is the rubber base plate for track traffic.
The rail transit section provided by the invention can also have the following characteristics: and the rail bottom support is arranged below the rubber base plate, wherein the rubber base plate is the rubber base plate for rail transit.
Action and Effect of the invention
According to the rubber pad for rail transit and the rail transit section, the rubber pad for rail transit comprises the plate body and the protruding parts arranged on the same surface of the plate body, wherein the protruding parts comprise a plurality of groups of protruding parts, and the plurality of groups of protruding parts are distributed from one edge of the plate body to the other edge opposite to the one edge, so that even and consistent deformation can be kept even under the condition of bearing uneven pressure, and vehicles can be kept stable when passing through the rail transit section.
According to the rubber tie plate for rail transit, the raw materials comprise 100 parts of matrix rubber, 20-100 parts of filler, 0-5 parts of silane coupling agent, 5-35 parts of activator, 0-15 parts of plasticizer, 3-10 parts of pigment, 1-3 parts of anti-aging agent, 3-15 parts of functional auxiliary agent, 0.3-2.5 parts of vulcanizing agent and 2-8 parts of vulcanization accelerator, so that the rubber tie plate for rail transit, provided by the invention, has different rigidities and is suitable for different rail transit road sections.
Drawings
FIG. 1 is a schematic structural diagram of a track traffic section according to a first embodiment;
FIG. 2 isbase:Sub>A cross-sectional view of the rail traffic segment of FIG. 1 taken along section A-A;
FIG. 3 is a schematic structural diagram of a rubber mat for rail transit in the first embodiment;
FIG. 4 is a top view of a rubber mat for rail transit in the first embodiment;
FIG. 5 is a side view of a rubber mat for rail transit in the first embodiment;
FIG. 6 is a bottom view of a rubber tie plate for rail transit in the first embodiment;
FIG. 7 is a schematic view of the installation of rubber tie plates for rail transit in a section of rail transit in the first embodiment;
FIG. 8 is an enlarged view of a portion of the area B in FIG. 7;
FIG. 9 is a schematic structural view of a rubber mat for rail transit in the fifth embodiment;
FIG. 10 is a top view of a rubber mat for rail transit in example five;
FIG. 11 is a side view of a rubber mat for rail transit in example five;
FIG. 12 is a bottom view of the rubber pad for rail transit in the fifth embodiment;
FIG. 13 is a schematic structural view of a rubber mat for rail transit in the sixth embodiment;
FIG. 14 is a top view of a rubber mat for rail transit in the sixth embodiment;
FIG. 15 is a side view of a rubber mat for rail transit in the sixth embodiment; and
fig. 16 is a bottom view of the rubber pad for rail transit in the sixth embodiment.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is specifically described below by combining the embodiment and the attached drawings.
The various sources of feedstock used in the following examples are as follows:
natural rubber, NR-1# produced by Hainan natural rubber industry group GmbH.
Ethylene propylene diene monomer, model 4045M, manufactured by Shanghai petrochemical triple well elastomers, inc.
Ethylene propylene diene monomer, model 3092PM, produced by the petrochemical triple well elastomer limited in shanghai.
White carbon black, VN3GR type, produced by Jianchuang Jialian white carbon black (Nanping) Co., ltd.
Calcium carbonate, light weight, produced by Hengda calcium industry Co., ltd.
Paraffin oil, H & R China (Ningbo) co, model 1968A by Ltd.
Silane coupling agent, si69 manufactured by the austrian chemical ltd of south kyo.
Petroleum resins, model TL100, manufactured by the company RUTGERS Germany GmbH.
Microcrystalline wax, H & R China (Fushun) co., 9332F by Ltd.
Dispersant WB215, produced by Schill + Seilacher 'struktol' GmbH.
Zinc oxide, TY-100 type, manufactured by blue sky chemical technology, inc. of Luoyang.
Stearic acid, type SA1840, manufactured by Hangzhou grease chemical Co.
Polyethylene wax, model WB42, produced by the Struktol Company of America.
Polyethylene glycol, polyethylene glycol 4000, PEG4000, manufactured by far east junctional petrochemicals (yangzhou) limited.
Titanium dioxide, R960, produced by The Chemous Company, LLC.
Chromium oxide green, SGC type, produced by yixing comforter, a product of coloration science and technology limited.
Chrome yellow, model 603H, produced by Yixing Huayi, a product of coloration science and technology Limited.
Red iron oxide, type S103, produced by yixing comforter, a product of coloration science and technology limited.
Carbon black, type N330, manufactured by jingbolan carbon materials limited.
Ultramarine, U08, yixing Huayi, a product of coloration science and technology, inc.
Anti-aging agent SPC, taizhou yellow rock east China sea chemical industry Co.
Anti-aging agent 2246, produced by yellow rock east China sea chemical Co., ltd
Antioxidant MB, produced by BONDTEK CHEMICALS L.L.C.
Sulfur, powder sulfur produced by Xinquan vulcanizing agent factory, anqing.
Dibenzothiazyl disulfide, a vulcanization accelerator DM, SOVMER CHEMICAL co.
N-cyclohexyl-2-benzothiazole sulfenamide, namely vulcanization accelerator CZ, is produced by the scientific and technological share of the new Ulin material.
Tetramethylthiuram disulfide, i.e., vulcanization accelerator TT, produced by Zhenjiang Shabang chemical Co., ltd.
Zinc dibutyldithiocarbamate, i.e. vulcanization accelerator ZDBC-75, produced by caming north high molecular additives limited.
4,4' -dimorpholine disulfide, namely a vulcanization accelerator DTDM-80, produced by Jiaxing North chemical polymer additives Limited.
< example one >
Fig. 1 isbase:Sub>A schematic structural diagram ofbase:Sub>A rail transit section according to an embodiment, and fig. 2 isbase:Sub>A cross-sectional view of the rail transit section alongbase:Sub>A linebase:Sub>A-base:Sub>A in fig. 1.
As shown in fig. 1-2, the present embodiment provides a rail transit section 10, where the rail transit section 10 is a curve, and includes: a plurality of sleepers 11, a rail base 12, a rubber pad 13 for rail transit, and two rails 14.
A plurality of sleepers 11 are laid along the extension of the track section 10, with both ends of each sleeper 11 higher than the middle.
The rail bottom supports 12 are respectively arranged at two ends of the sleeper 11, each rail bottom support 12 is provided with a rail bottom support groove, and the size of each rail bottom support groove is matched with that of the rubber base plate 13 for rail transit. When mounting rail shoe 12, the side of rail shoe 12 near the end of tie 11 is slightly higher than the side near the middle of tie 11. In this embodiment, the mounting slope of the rail shoe 12 is 1:40.
and a rubber base plate 13 for rail transit is arranged in the rail bottom support groove. The specific structure of the rubber pad 13 for rail transit used in the present embodiment will be described in detail later.
Two rails 14 are respectively arranged on rubber tie plates 13 for rail transit at two ends of the sleeper 11, and the two rails 14 are arranged in parallel.
Fig. 3 is a schematic structural view of a rubber pad for rail transit in the first embodiment, fig. 4 is a top view of the rubber pad for rail transit in the first embodiment, fig. 5 is a side view of the rubber pad for rail transit in the first embodiment, and fig. 6 is a bottom view of the rubber pad for rail transit in the first embodiment.
As shown in fig. 3 to 6, the rubber pad 13 for rail transit has: plate 16, bar distribution protrusions 17, point distribution protrusions 18, and grooves 19.
The plate 16 is a rectangular parallelepiped having a first edge 20 and a second edge 21 disposed opposite to each other. In the present embodiment, the plate body 16 has a length of 185mm, a width of 150mm and a height of 7mm.
The strip distribution protrusion 17 is provided on one surface of the plate body 16, and includes a strip protrusion 22 and a strip groove 23.
A bar-shaped protrusion 22 is formed extending along the first edge 20 of the plate body 11 and is integrally formed with the plate body 16.
In the present embodiment, the number of the strip-shaped protrusions 22 is three, and the three strip-shaped protrusions 22 are distributed along the first edge 20 of one plate 16 to the second edge 21, and are a first strip-shaped protrusion 22a, a second strip-shaped protrusion 22b and a third strip-shaped protrusion 22c from the first edge 20. Wherein, the width of the first bar-shaped protrusion 22a is 13mm, the length is 185mm, and the height is 3mm; the second bar-shaped protrusion 22b has a width of 20mm, a length of 185mm, and a height of 3mm; the first bar-shaped protrusion 22c has a width of 21mm, a length of 185mm and a height of 3mm.
The strip-shaped groove 23 is formed between adjacent two strip-shaped protrusions 22. In the present embodiment, the number of the bar-shaped grooves 23 is two, and the first bar-shaped groove 23a formed between the first bar-shaped protrusion 22a and the second bar-shaped protrusion 22b and the second bar-shaped groove 23b formed between the second bar-shaped protrusion 22b and the third bar-shaped protrusion 22c are provided, wherein the width of the first bar-shaped groove 23a is 4mm and the width of the second bar-shaped groove 23b is 4mm, respectively.
The point distribution protrusions 18 are provided on the same surface of the plate body 16 as the bar distribution protrusions 17 and are distributed from one side of the long side of the third bar-shaped protrusion 22c to the second edge 21 of the plate body 16. The dot-dispensing protrusions 18 are also formed integrally with the plate body 16. The point distribution protrusion 18 includes a plurality of rows of truncated cone-shaped protrusion sets 24, a plurality of rows of truncated cone-shaped protrusion sets 24 are formed along the width direction of the bar-shaped protrusion 22, each row of the truncated cone-shaped protrusion sets 24 includes a plurality of truncated cone-shaped protrusions 25, the cross-sectional areas of the truncated cone-shaped protrusions 25 in the same row are the same, the cross-sectional areas of the truncated cone-shaped protrusion sets 24 in each row are gradually reduced from the first edge 20 toward the second edge 21 of the plate body 16, and the truncated cone-shaped protrusions 25 in two adjacent rows are arranged in a staggered manner.
In the present embodiment, the dot distribution protrusion 23 includes six rows of the mesa-shaped protrusion sets 24, and all of the mesa-shaped protrusions 25 are cylindrical. The six rows of the truncated cone-shaped projection groups 24 are, from one side of the long side of the bar-shaped projection 22, a first row of the truncated cone-shaped projection groups 24a, a second row of the truncated cone-shaped projection groups 24b, a third row of the truncated cone-shaped projection groups 24c, a fourth row of the truncated cone-shaped projection groups 24d, a fifth row of the truncated cone-shaped projection groups 24e, and a sixth row of the truncated cone-shaped projection groups 24f, respectively. The distance between two adjacent rows of the truncated cone-shaped protrusion groups 24 is 17mm. The upper surfaces of all the mesa-shaped projections 25 are flush with the upper surfaces of the bar-shaped projections 22.
The first row of the mesa-shaped projection groups 24a comprises 8 identical mesa-shaped projections 25, the distance between two adjacent mesa-shaped projections 25 in the first row of the mesa-shaped projection groups 24a is 8.5mm, each mesa-shaped projection 25 has a circular cross section with a diameter of 12mm and an area of 6 pi mm 2 Approximately 113.4mm 2 。
The second row of the mesa-shaped projection groups 24b comprises 9 identical mesa-shaped projections 25, the distance between two adjacent mesa-shaped projections 25 in the first row of the mesa-shaped projection groups 24b is 8.5mm, each mesa-shaped projection 25 has a cross section of a circular shape with a diameter of 12mm and an area of 36 π mm 2 Approximately 113.4mm 2 。
The third row of the truncated cone-shaped protrusion groups 24c comprises 8 identical truncated cone-shaped protrusions 25, the distance between two adjacent truncated cone-shaped protrusions 25 in the first row of the truncated cone-shaped protrusion groups 24c is 10.5mm, the cross section of each truncated cone-shaped protrusion 25 is a circle with the diameter of 10mm, and the area of each truncated cone-shaped protrusion 25 is 25 pi mm 2 About 78.5mm 2 。
The fourth row of the mesa-shaped projection groups 24d includes 9 identical mesa-shaped projections 25, the distance between two adjacent mesa-shaped projections 25 in the first row of the mesa-shaped projection groups 24d is 10.5mm, each mesa-shaped projection 25 has a cross section of a circular shape with a diameter of 10mm and an area of 25 π mm 2 About 78.5mm 2 。
The fifth row of the truncated cone-shaped protrusion groups 24e comprises 8 identical truncated cone-shaped protrusions 25, the distance between two adjacent truncated cone-shaped protrusions 25 in the first row of the truncated cone-shaped protrusion groups 24e is 12.3mm, the cross section of each truncated cone-shaped protrusion 25 is a circle with the diameter of 8mm, and the area of each truncated cone-shaped protrusion 25 is 16 pi mm 2 Approximately 50.2mm 2 。
The sixth row of the truncated cone-shaped protrusion groups 24f comprises 9 identical truncated cone-shaped protrusions 25, the distance between two adjacent truncated cone-shaped protrusions 20 in the first row of the truncated cone-shaped protrusion groups 24f is 12.3mm, the cross section of each truncated cone-shaped protrusion 25 is a circle with the diameter of 8mm, and the area of each truncated cone-shaped protrusion is 16 pi mm 2 About 50.2mm 2 。
A plurality of grooves 19 are formed on the other surface of the plate body 16. In the present embodiment, the grooves 19 are five straight grooves, and the five grooves 19 are uniformly distributed on the surface of the plate body 16. The five grooves 19 are arranged in parallel and the extending direction of the grooves is consistent with the length direction of the strip-shaped protrusions 22. The widths of the five grooves 19 are the same and are all 4mm, and the distance between two adjacent grooves 19 is 21mm.
FIG. 7 is a schematic view of the installation of rubber tie plates for rail transit in a rail transit section according to the first embodiment. Fig. 8 is a partially enlarged view of the area B in fig. 7.
In order to better show the installation state of the rubber pad 13 for rail transit in the rail transit section 10, the rail 14 partially disposed right above the rubber pad 13 for rail transit is omitted in fig. 7.
As shown in fig. 7-8, in the present embodiment, since the installation gradient of the rail shoe 12 is 1:40, and meets the installation standard of the rail foot 12 on the rail transit section 10, so as to provide better damping effect, the rubber pad 13 for rail transit is installed, and the point distribution protrusion 18 thereof is located at a side close to the middle line of the two rails 14, and the rubber pad 13 for rail transit has the bar distribution protrusion 17, and the side of the point distribution protrusion 18 faces the bottom of the rail 14, but in other embodiments, the rubber pad 13 for rail transit has the bar distribution protrusion 17, and the side of the point distribution protrusion 18 may also be located toward the upper surface of the rail foot 12.
The rubber base plate for rail transit in the embodiment is prepared from the following raw materials in parts by weight:
100 parts of NR-1# natural rubber, 60 parts of white carbon black, 5 parts of calcium carbonate, 30 parts of zinc oxide, 1.5 parts of stearic acid, 1.5 parts of an anti-aging agent SPC, 1 part of an anti-aging agent 2246, 2 parts of microcrystalline wax, 1 part of WB215, 5 parts of PEG4000, 5 parts of titanium dioxide, 2 parts of chromium oxide green, 0.8 part of sulfur, 1.3 parts of dibenzothiazyl disulfide, 2.5 parts of N-cyclohexyl-2-benzothiazole sulfonamide and 1.3 parts of tetramethyl thiuram disulfide.
The preparation method of the rubber base plate composition for subway rail transit in the embodiment is as follows:
step 1, mixing 100 parts of NR-1# natural rubber, 60 parts of white carbon black, 5 parts of calcium carbonate, 30 parts of zinc oxide, 1.5 parts of stearic acid, 1.5 parts of anti-aging agent SPC, 1 part of anti-aging agent 2246, 2 parts of microcrystalline wax, 1 part of WB215, 5 parts of PEG4000, 5 parts of titanium dioxide and 2 parts of chromium oxide green for 2min, adding 40 parts of white carbon black and 3.3 parts of calcium carbonate, mixing for 5min, finally adding 20 parts of white carbon black and 1.7 parts of calcium carbonate, mixing for 4min, controlling the internal temperature of the mixer to be 100 ℃, introducing lifting plugs, discharging rubber, cooling and standing for 10h to obtain A-section rubber;
step 2, adding the material of the section A into an open mill for hot refining, controlling the temperature of a roller of the open mill at 50 ℃, adding 0.8 part of sulfur, 1.3 parts of dibenzothiazyl disulfide, 2.5 parts of N-cyclohexyl-2-benzothiazole sulfenamide and 1.3 parts of tetramethyl thiuram disulfide, turning over for 4 times, packing for 4 times, thinly passing through for 5 times at a small roller distance, taking out the rubber, cooling and standing to obtain rubber of the section B;
step 3, cutting the section B of glue according to the requirement to obtain a glue blank;
and 4, putting the rubber blank into a corresponding mold, and vulcanizing to obtain the rubber base plate for the subway rail transit.
The rubber base plate for rail transit prepared in the embodiment is subjected to performance test, wherein the test method of Shore hardness is GB/T531.1-2008, the test method of tensile strength is GB/T528-2009, the test method of elongation at break is GB/T528-2009, the test method of stress at definite elongation is GB/T528-2009, and the test method of static stiffness is performed according to TB/T3395.1-2015 appendix A.
The test results are shown in table 1.
Table 1 test results of the rubber packing in example one
Content of test Test results
Shore hardness 81shore A
Tensile strength 19.3MPa
Elongation at Break 315％
Stress at definite elongation of 200% 11.5MPa
Minimum static stiffness * 30kN/mm
Maximum static stiffness ** 180kN/mm
* Note: the minimum static stiffness refers to the static stiffness of the side of the rubber pad plate with the minimum stiffness, as follows.
** Note: the maximum static stiffness refers to the static stiffness of the side with the maximum stiffness of the rubber base plate, and the action and the effect of the first embodiment are the same as the action and the effect of the second embodiment
According to the rubber tie plate for rail transit and the rail transit related to the embodiment, because the rubber tie plate for rail transit comprises a plate body and the strip distribution protruding part and the point distribution protruding part which are arranged on the same surface of the plate body, one side of the rubber tie plate for rail transit, which is provided with the strip distribution protruding part, has higher rigidity than one side of the rubber tie plate for rail transit, when the rubber tie plate for rail transit is installed on a rail transit section at a curve, the centrifugal force generated when a vehicle runs at the curve can be balanced, the deformation amount is automatically compensated, the deformation amount of each position of the whole rubber tie plate for rail transit is approximate, and therefore the rubber tie plate for rail transit is beneficial to keeping the stability of the vehicle running at the curve of the rail transit section, and reducing vibration and noise.
Meanwhile, the rubber backing plate for rail transit provided by the embodiment adopts NR-1# natural rubber, white carbon black, a silane coupling agent, zinc oxide, stearic acid, an anti-aging agent SPC, an anti-aging agent 2246, microcrystalline wax, WB215, PEG4000, titanium dioxide, chromium oxide green, sulfur, dibenzothiazyl disulfide, N-cyclohexyl-2-benzothiazole sulfenamide and tetramethyl thiuram disulfide as raw materials, so that the minimum static stiffness of the rubber backing plate is 30kN/mm, the maximum static stiffness is 180kN/mm, the static stiffness is matched with the static stiffness required by a curve radius of a subway track of a subway with an operation axle weight of 16t being less than or equal to 400m, and the rubber backing plate is suitable for being installed at a curve of a subway track of a subway with an operation axle weight of 16t being less than or equal to 400 m.
Further, as five grooves which are parallel to each other and are uniformly distributed are formed on the other surface of the rubber tie plate for rail transit, on one hand, under the condition that the rubber tie plate for rail transit is provided with the strip distribution protrusions and the point distribution protrusions, the surfaces of the strip distribution protrusions and the point distribution protrusions are subjected to severe surface deformation, a part of force can be absorbed, and therefore the rubber tie plate for rail transit is prevented from being excessively distorted and deformed; on the other hand, accumulated water can be guided to be discharged quickly in rainy days, and smoothness of the rail transit road section is guaranteed.
Further, because the cooling and parking operation is performed for 10h in the first step of the preparation step of the rubber base plate for rail transit in the embodiment, the shrinkage stabilizer of the section a rubber can be ensured in the subsequent steps, and various additives and the base rubber support can be fully infiltrated and fused, so that the mechanical strength of the rubber base plate for rail transit can be improved.
Further, in the second step of the step of preparing the rubber base plate for rail transit in this embodiment, the operations of passing through the roller for 5 times at a small roll distance, discharging, cooling and parking are performed, so that not only can the powder be sufficiently dispersed and fused in the rubber of the section a, but also scorching caused by an excessively high processing temperature can be avoided.
< example II >
This embodiment provides a rubber tie plate for rail transit, and its structure is completely the same as the rubber tie plate for rail transit in embodiment one.
The rubber base plate for rail transit provided by the embodiment is prepared from the following raw materials in parts by weight:
100 parts of NR-1# natural rubber, 50 parts of white carbon black, 25 parts of calcium carbonate, 2 parts of silane coupling agent, 2 parts of paraffin oil, 5 parts of zinc oxide, 1.5 parts of stearic acid, 1 part of anti-aging agent SPC, 1 part of anti-aging agent 2246, 3.5 parts of microcrystalline wax, 1 part of WB215, 3.5 parts of PEG4000, 5 parts of titanium dioxide, 2 parts of chromium oxide green, 2.3 parts of sulfur, 1.5 parts of dibenzothiazyl disulfide, 1 part of N-cyclohexyl-2-benzothiazole sulfonamide and 0.3 part of tetramethyl thiuram disulfide.
The preparation method of the rubber base plate for subway rail transit in the embodiment is as follows:
step 1, adding 100 parts of NR-1# natural rubber into an internal mixer, refining for 7min, adding 2 parts of silane coupling agent, 2 parts of paraffin oil, 5 parts of zinc oxide, 1.5 parts of stearic acid, 1 part of anti-aging agent SPC, 1 part of anti-aging agent 2246, 3.5 parts of microcrystalline wax, 1 part of WB215, 3.5 parts of PEG4000, 5 parts of titanium dioxide and 2 parts of chromium oxide green, carrying out internal mixing for 2min, adding 33.3 parts of white carbon black and 16.7 parts of calcium carbonate, mixing for 5min, finally adding 16.7 parts of white carbon black and 8.3 parts of calcium carbonate, mixing for 4min, controlling the internal temperature of the internal mixer to be 100 ℃, introducing and lifting plugs to discharge rubber, cooling, standing for 10h, and obtaining A-stage rubber;
step 2, adding the section A material into an open mill for hot milling, controlling the temperature of a roller of the open mill at 50 ℃, adding 2.3 parts of sulfur, 1.5 parts of dibenzothiazyl disulfide, 1 part of N-cyclohexyl-2-benzothiazole sulfonamide and 0.3 part of tetramethyl thiuram disulfide, turning over for 4 times, packaging for 4 times, thinly passing through for 5 times with a small roller distance, taking out a slice, cooling and standing to obtain a section B glue;
step 3, cutting the section B of glue according to the requirement to obtain a glue blank;
and 4, putting the rubber blank into a corresponding mold, and vulcanizing to obtain the rubber base plate for the subway rail transit.
The performance test of the rubber base plate composition for subway rail transit prepared in the embodiment is carried out, and the test method is the same as that in the first embodiment.
The test results are shown in table 2.
Table 2 test results of rubber pads in example two
Content of test Test results
Shore hardness 69shore A
Tensile strength 20.9MPa
Elongation at Break 480％
Stress at definite elongation of 200% 6.0MPa
Minimum static stiffness 25kN/mm
Maximum static stiffness 160kN/mm
Effects and effects of example two
According to the rubber tie plate for rail transit related to the embodiment, because the minimum static stiffness of the rubber tie plate for rail transit is 25kN/mm, and the maximum static stiffness of the rubber tie plate for rail transit is 160kN/mm, the rubber tie plate is matched with the static stiffness of the rubber tie plate for rail transit required at the inner strand of the curve of the subway track of the subway with the operation axle weight of 14t, wherein the curve radius of the subway track of the subway is less than or equal to 400m, and the rubber tie plate is particularly suitable for being installed at the inner strand of the curve of the subway track of the subway with the operation axle weight of 14t, wherein the curve radius of the subway track of the subway is less than or equal to 400 m.
< example three >
This embodiment provides a rubber tie plate for rail transit, and its structure is completely the same as the rubber tie plate for rail transit in embodiment one.
The rubber base plate for rail transit in the embodiment is prepared from the following raw materials in parts by weight:
30 parts of 4045M ethylene propylene diene monomer rubber, 70 parts of 3092PM ethylene propylene diene monomer rubber, 40 parts of white carbon black, 22 parts of calcium carbonate, 2 parts of silane coupling agent, 12 parts of paraffin oil, 5 parts of zinc oxide, 1.5 parts of stearic acid, 1 part of antioxidant MB, 0.6 part of antioxidant 2246, 2 parts of microcrystalline wax, 2 parts of polyethylene wax WB42, 3 parts of PEG4000, 3 parts of petroleum resin TL-100, 3 parts of titanium dioxide, 1.5 parts of chromium oxide green, 0.5 part of sulfur, 2 parts of dibenzothiazyl disulfide, 1.3 parts of zinc dibutyldithiocarbamate, 1.3 parts of 4,4' -dimorpholine disulfide and 0.5 part of tetramethyl thiuram disulfide.
The preparation method of the rubber base plate composition for subway rail transit in the embodiment is as follows:
step 1, adding 30 parts of 4045M ethylene propylene diene monomer and 70 parts of 3092PM ethylene propylene diene monomer into an internal mixer, refining for 7min, adding 2 parts of silane coupling agent, 12 parts of paraffin oil, 5 parts of zinc oxide, 1.5 parts of stearic acid, 1 part of antioxidant MB, 0.6 part of antioxidant 2246, 2 parts of microcrystalline wax, 2 parts of polyethylene wax WB42, 3 parts of PEG4000, 3 parts of petroleum resin TL-100, 3 parts of titanium dioxide and 1.5 parts of chromium oxide green, carrying out internal mixing for 2min, adding 26.7 parts of white carbon black and 14.7 parts of calcium carbonate, carrying out mixing for 5min, finally adding 13.3 parts of white carbon black, 7.3 parts of calcium carbonate and 12 parts of paraffin oil, carrying out mixing for 4min, controlling the internal temperature of the internal mixer to be 100 ℃, lifting the plug to remove rubber, cooling, and standing for 10h to obtain A-section rubber;
step 2, adding the section A material into an open mill for hot refining, controlling the temperature of a roller of the open mill at 50 ℃, adding 0.5 part of sulfur, 2 parts of dibenzothiazyl disulfide, 1.3 parts of zinc dibutyl dithiocarbamate, 1.3 parts of 4,4' -dimorpholine disulfide and 0.5 part of tetramethyl thiuram disulfide, turning over for 4 times, packaging for 4 times, thinly passing through a small roller distance for 5 times, taking out a piece, cooling and placing to obtain a section B adhesive;
step 3, cutting the section B of glue according to the requirement to obtain a glue blank;
and 4, putting the rubber blank into a corresponding mold, and vulcanizing to obtain the rubber base plate for subway rail transit.
The performance test of the rubber base plate composition for subway rail transit prepared in the embodiment was performed, and the test method was the same as in the first embodiment.
The test results are shown in table 3.
Table 3 test results of rubber pads in example three
Content of test Test results
Shore hardness 70shore A
Tensile strength 15.5MPa
Elongation at break 475％
Stress at definite elongation of 200% 4.6MPa
Minimum static stiffness 25kN/mm
Maximum static stiffness 160kN/mm
Effects and effects of example III
The minimum static rigidity of the rubber base plate for the rail transit according to the embodiment is 25kN/mm, and the maximum static rigidity is 160kN/mm, so that the rubber base plate is matched with the static rigidity of the rubber base plate for the rail transit required by the curve inner stand of the subway rail with the operation axle load of 14t, wherein the curve radius of the subway rail is less than or equal to 400m, and the rubber base plate is particularly suitable for being installed at the curve inner stand of the subway rail, wherein the curve radius of the subway rail is less than or equal to 400 m.
Further, the rubber backing plate composition for rail transit used in the rubber backing plate for rail transit adopted in the embodiment is composed of ethylene propylene diene monomer, so that the rubber backing plate for rail transit provided in the embodiment has better weather resistance, can bear larger temperature difference change, and is more suitable for elevated road sections or road foundation sections.
< example four >
The present embodiment provides a rubber tie plate for rail transit, which has a structure identical to that of the rubber tie plate for rail transit in the first embodiment.
The rubber base plate for rail transit in the embodiment is prepared from the following raw materials in parts by weight:
30 parts of 4045M ethylene propylene diene monomer, 70 parts of 3092PM ethylene propylene diene monomer, 45 parts of white carbon black, 25 parts of calcium carbonate, 2 parts of silane coupling agent, 8 parts of paraffin oil, 5 parts of zinc oxide, 1.5 parts of stearic acid, 1 part of antioxidant MB, 0.6 part of antioxidant 2246, 2 parts of microcrystalline wax, 2 parts of polyethylene wax WB42, 3 parts of PEG4000, 3 parts of petroleum resin TL-100, 3 parts of titanium dioxide, 1.5 parts of chrome yellow, 0.5 part of sulfur, 2 parts of dibenzothiazyl disulfide, 1.3 parts of zinc dibutyl dithiocarbamate, 0.5 part of tetramethyl thiuram disulfide and 1.3 parts of 4,4' -dimorpholine disulfide.
The preparation method of the rubber base plate for subway rail transit in the embodiment is as follows:
step 1, adding 30 parts of 4045M ethylene propylene diene monomer and 70 parts of 3092PM ethylene propylene diene monomer into an internal mixer, refining for 7min, adding 2 parts of silane coupling agent, 8 parts of paraffin oil, 5 parts of zinc oxide, 1.5 parts of stearic acid, 1 part of antioxidant MB, 0.6 part of antioxidant 2246, 2 parts of microcrystalline wax, 2 parts of polyethylene wax WB42, 3 parts of PEG4000, 3 parts of petroleum resin TL-100, 3 parts of titanium dioxide and 1.5 parts of chrome yellow, carrying out internal mixing for 2min, adding 30 parts of white carbon black and 16.7 parts of calcium carbonate, carrying out mixing for 5min, finally adding 15 parts of white carbon black, 8.3 parts of calcium carbonate and 8 parts of paraffin oil, carrying out mixing for 4min, controlling the internal temperature of the internal mixer to be 100 ℃, lifting the mixture to remove the glue, cooling, and standing for 10h to obtain A-section glue;
step 2, adding the section A material into an open mill for hot refining, controlling the temperature of a roller of the open mill at 50 ℃, adding 0.5 part of sulfur, 2 parts of dibenzothiazyl disulfide, 1.3 parts of zinc dibutyldithiocarbamate, 0.5 part of tetramethylthiuram disulfide and 1.3 parts of 4,4' -dimorpholinodisulfide, turning over for 4 times, packaging for 4 times, thinly passing for 5 times at a small roller distance, taking out a piece, cooling and standing to obtain a section B adhesive;
step 3, cutting the section B of glue as required to obtain a glue blank;
and 4, putting the rubber blank into a corresponding mold, and vulcanizing to obtain the rubber base plate for subway rail transit.
The performance test of the rubber base plate composition for subway rail transit prepared in the embodiment was performed, and the test method was the same as in the first embodiment.
The test results are shown in table 4.
Table 4 test results of the rubber packing in example four
Figure BDA0002942856860000241
Figure BDA0002942856860000251
Effects and effects of example four
According to the rubber tie plate for rail transit related to the embodiment, besides the same technical effects as those of the embodiment eight, the rubber tie plate for rail transit is made of the rubber tie plate composition for rail transit in the embodiment six, the most static rigidity is 25kN/mm, and the most static rigidity is 150kN/mm, so that the rubber tie plate for rail transit is matched with the static rigidity of the rubber tie plate for rail transit required at the outer strand of a curve (the curve radius is less than or equal to 400 m) of a subway rail with the running axle weight of 16t, and is particularly suitable for being installed at the outer strand of the curve with the curve radius of the subway rail being less than or equal to 400 m.
Further, the rubber backing plate composition for rail transit used in the rubber backing plate for rail transit adopted in the embodiment is made of ethylene propylene diene monomer, so that the rubber backing plate for rail transit provided in the embodiment has better weather resistance, can bear larger temperature difference change, and is more suitable for elevated road sections or road bed sections.
< example five >
Fig. 9 is a schematic structural view of a rubber tie plate for rail transit in the fifth embodiment, fig. 10 is a top view of the rubber tie plate for rail transit in the fifth embodiment, fig. 11 is a side view of the rubber tie plate for rail transit in the fifth embodiment, and fig. 12 is a bottom view of the rubber tie plate for rail transit in the fifth embodiment.
As shown in fig. 9 to 12, the present embodiment provides a rubber pad 113 for rail transit, which has: plate body 116, bar distribution protrusions 117, legs 118, and grooves 119.
The plate 116 is a rectangular parallelepiped having a first edge 120 and a second edge 121 disposed opposite to each other. In the present embodiment, the plate body 116 has a length of 185mm, a width of 150mm and a height of 10mm.
The bar distribution protrusion 117 is disposed on one surface of the plate body 116, and includes a bar protrusion 122 and a bar groove 123.
A rib 122 is formed extending along the first edge 120 of the plate body 111 and is integrally formed with the plate body 116, and the upper surfaces of all the rib 122 are flush.
In the present embodiment, the bar distribution protrusion 117 includes 11 bar protrusions 122, 11 bar protrusions are distributed from the first edge 120 of the plate body 111 to the second edge 121 opposite to the first edge 120, and are a first bar protrusion 122a, a second bar protrusion 122b, a third bar protrusion 122c, a fourth bar protrusion 122d, a fifth bar protrusion 122e, a sixth bar protrusion 122f, a seventh bar protrusion 122g, an eighth bar protrusion 122h, a ninth bar protrusion 122i, a tenth bar protrusion 122j, and an eleventh bar protrusion 122k, respectively, from the first edge 120 along the first edge 120.
The width of the 11 bar-shaped protrusions 122 is gradually decreased from the first edge 120 toward the second edge 121. In the present embodiment, the width of the first bar-shaped protrusion 122a is 20mm, the width of the second bar-shaped protrusion 122b is 18.2mm, the width of the third bar-shaped protrusion 122c is 11mm, the width of the fourth bar-shaped protrusion 122d is 9.3mm, the width of the fifth bar-shaped protrusion 122e is 8.4mm, the width of the sixth bar-shaped protrusion 122f is 7.8mm, the width of the seventh bar-shaped protrusion 122f is 6.5mm, the width of the eighth bar-shaped protrusion 122g is 5.6mm, the width of the ninth bar-shaped protrusion 122h is 4.3mm, the width of the tenth bar-shaped protrusion 122i is 4.3mm, and the width of the eleventh bar-shaped protrusion 122j is 2.7mm.
The strip-shaped grooves 123 are disposed between two adjacent strip-shaped protrusions 122, and in the present embodiment, there are 10 strip-shaped grooves 123, and all the strip-shaped grooves 123 have equal spacing and are 4mm.
Legs 118 are formed on the other surface of the plate 116 for cooperating with the rail shoe grooves to more securely nest the plate 116 within the rail shoe. In the present embodiment, the number of the legs 118 is 4, and four corners of the other surface of the plate body 116 are formed, respectively.
A plurality of grooves 119 are formed on the other surface of the plate body 116. In the present embodiment, the grooves 119 are five straight grooves, and the five grooves 119 are uniformly distributed on the surface of the plate body 116. The five grooves 119 are arranged in parallel and extend in the same direction as the length direction of the bar-shaped protrusion 122. The widths of the five grooves 119 are the same and are all 4mm, and the distance between two adjacent grooves 119 is 21mm.
In this embodiment, since the installation gradient of the rail shoe 112 is 1:40, which meets the installation standard of the rail foot rest on the rail transit section, so in order to provide better damping effect, the rubber pad 113 for rail transit is installed such that the width of the rib 122 of the second edge 121 on the side close to the middle line of the two rails, i.e., the side close to the middle line of the two rails 14, is greater than the width of the rib 122 on the side away from the middle line of the two rails 114. Meanwhile, the rubber pad 113 for rail transit has a strip distribution protrusion 117 facing the bottom of the rail.
The rubber base plate for rail transit in the embodiment is prepared from the following raw materials in parts by weight:
100 parts of NR-1# natural rubber, 60 parts of white carbon black, 5 parts of calcium carbonate, 30 parts of zinc oxide, 1.5 parts of stearic acid, 1.5 parts of an anti-aging agent SPC, 1 part of an anti-aging agent 2246, 2 parts of microcrystalline wax, 1 part of WB215, 5 parts of PEG4000, 5 parts of titanium dioxide, 2 parts of ultramarine, 0.8 part of sulfur, 1.3 parts of dibenzothiazyl disulfide, 2.5 parts of N-cyclohexyl-2-benzothiazole sulfenamide and 1.3 parts of tetramethylthiuram disulfide.
The preparation method of the rubber base plate for subway rail transit in the embodiment is as follows:
step 1, mixing 100 parts of NR-1# natural rubber, 60 parts of white carbon black, 5 parts of calcium carbonate, 30 parts of zinc oxide, 1.5 parts of stearic acid, 1.5 parts of anti-aging agent SPC, 1 part of anti-aging agent 2246, 2 parts of microcrystalline wax, 1 part of WB215, 5 parts of PEG4000, 5 parts of titanium dioxide and 2 parts of ultramarine for 2min, adding 40 parts of white carbon black and 3.3 parts of calcium carbonate, mixing for 5min, finally adding 20 parts of white carbon black and 1.7 parts of calcium carbonate, mixing for 4min, controlling the internal temperature of the mixer to be 100 ℃, introducing lifting plugs, discharging rubber, cooling and standing for 10h to obtain A-section rubber;
step 2, adding the material of the section A into an open mill for hot refining, controlling the temperature of a roller of the open mill at 50 ℃, adding 0.8 part of sulfur, 1.3 parts of dibenzothiazyl disulfide, 2.5 parts of N-cyclohexyl-2-benzothiazole sulfenamide and 1.3 parts of tetramethyl thiuram disulfide, turning over for 4 times, packing for 4 times, thinly passing through for 5 times at a small roller distance, taking out the rubber, cooling and standing to obtain rubber of the section B;
step 3, cutting the section B of glue as required to obtain a glue blank;
and 4, putting the rubber blank into a corresponding mold, and vulcanizing to obtain the rubber base plate for the subway rail transit.
The performance test of the rubber base plate for subway rail transit prepared in the embodiment is carried out, and the test method is the same as that in the first embodiment.
The test results are shown in table 5.
Table 5 test results of rubber pads in example five
Content of test Test results
Shore hardness 80shore A
Tensile strength 18.9MPa
Elongation at break 302％
Stress at definite elongation of 200% 11.9MPa
Minimum static stiffness 50kN/mm
Maximum static stiffness 300kN/mm
Effects and effects of example five
According to the rubber tie plate for rail transit and the rail transit section related to the embodiment, the rubber tie plate for rail transit comprises the plate body and the protruding part, the protruding part is a strip-shaped protruding part comprising a plurality of strip-shaped protrusions, the width of the strip-shaped protrusions is gradually reduced from the first edge of the plate body to the second edge of the plate body, therefore, when a vehicle passes through a curve of the rail transit section, due to the action of centrifugal force, the pressure generated by the vehicle to the outer side of a steel rail is larger than the pressure generated by the inner side of the steel rail, correspondingly, the pressure generated by the steel rail to one side, located on the outer side of the steel rail, of the rubber tie plate for rail transit is larger than the pressure generated by one side, located on the inner side of the steel rail, due to the fact that the rubber tie plate for rail transit provided by the embodiment, the second edge of the plate body is close to one side of the center lines of the two steel rails during installation, deformation amount of each position of the whole rubber tie plate for rail transit is close, and therefore, stability of the vehicle running on the curve of the rail transit section is favorably maintained, vibration and noise reduction are facilitated.
Meanwhile, the rubber tie plate for rail transit is made of NR-1# natural rubber, white carbon black, calcium carbonate, zinc oxide, stearic acid, an anti-aging agent SPC, an anti-aging agent 2246, microcrystalline wax, WB215, PEG4000, titanium dioxide, ultramarine, sulfur, dibenzothiazyl disulfide, N-cyclohexyl-2-benzothiazole sulfenamide and tetramethylthiuram disulfide, so that the minimum static stiffness of the rubber tie plate for rail transit is 50kN/mm, the maximum static stiffness of the rubber tie plate for rail transit is 300kN/mm, and the static stiffness of the rubber tie plate for rail transit required by a straight track of a heavy haul railway is matched with that of the rubber tie plate for rail transit, and therefore, the rubber tie plate for rail transit provided by the embodiment is particularly suitable for the straight track of the heavy haul railway.
Furthermore, five grooves which are parallel to each other and are uniformly distributed are formed on the other surface of the rubber base plate for rail transit, so that on one hand, a part of force can be absorbed under the condition that the base plate is deformed due to stress, and the base plate is prevented from being excessively distorted and deformed; on the other hand, accumulated water can be guided to be discharged quickly in rainy days, and smoothness of the rail transit road section is guaranteed.
Further, because the area of contact of the strip distribution protruding part in the rubber tie plate for rail transit near first edge one side and the bottom of steel rail is greater than the area of contact of the strip distribution protruding part near second edge one side and the bottom of steel rail for there is bigger lateral friction between strip distribution protruding part and the steel rail, thereby make the installation between steel rail and the rubber tie plate for rail transit more reliable, difficult emergence displacement.
< example six >
Fig. 13 is a schematic structural view of a rubber pad for rail transit in the sixth embodiment, fig. 14 is a plan view of the rubber pad for rail transit in the sixth embodiment, fig. 15 is a side view of the rubber pad for rail transit in the sixth embodiment, and fig. 16 is a bottom view of the rubber pad for rail transit in the sixth embodiment.
As shown in fig. 13 to 16, the present embodiment provides a rubber pad 131 for rail transit, which has: plate 132, point distribution protrusions 133, legs 134, and grooves 135.
The plate 132 is a rectangular parallelepiped having a first edge 136 and a second edge 137 disposed opposite to each other. In the present embodiment, the plate body 132 has a length of 185mm, a width of 150mm, and a height of 10mm.
The point distribution protrusion 133 includes a plurality of mesa-shaped protrusions 138 having upper surfaces flush with each other, and the plurality of mesa-shaped protrusions 138 are distributed from the first edge 135 and the second edge 136 of the plate body 132. The plurality of truncated cone-shaped protrusions 138 are formed with a plurality of rows of truncated cone-shaped protrusion sets in the longitudinal direction of the plate 132, and two adjacent rows of the truncated cone-shaped protrusion sets are arranged in a staggered manner.
The plurality of mesa-shaped projections 138 each have a cross-section, the area of the cross-section of the mesa-shaped projections 138 in each row is the same, and the area of the cross-section of the mesa-shaped projections 138 in each group of the row of mesa-shaped projections gradually decreases from the first edge 136 to the second edge 137.
Specifically, in the present embodiment, the number of the mesa-shaped projections 138 is 95. The 95 truncated projections 138 are each cylindrical and have a circular cross section. In other embodiments, the mesa-shaped protrusion may have another shape, such as a circular truncated cone shape, a rectangular parallelepiped shape, a tetrahedral shape, or an elliptical cylindrical shape.
The 95 truncated cone-shaped projections 138 are formed in 10 rows in the longitudinal direction of the plate 132, and are, starting from the first edge 136, a first row of truncated cone-shaped projection group 139a, a second row of truncated cone-shaped projection group 139b, a third row of truncated cone-shaped projection group 139c, a fourth row of truncated cone-shaped projection group 139d, a fifth row of truncated cone-shaped projection group 139e, a sixth row of truncated cone-shaped projection group 139f, a seventh row of truncated cone-shaped projection group 139g, an eighth row of truncated cone-shaped projection group 139h, a ninth row of truncated cone-shaped projection group 139i, and a tenth row of truncated cone-shaped projection group 139j, respectively.
In the first row of the truncated cone-shaped projection group 139a, the third row of the truncated cone-shaped projection group 139c, the fifth row of the truncated cone-shaped projection group 139e, the seventh row of the truncated cone-shaped projection group 139g, and the ninth row of the truncated cone-shaped projection group 139i, each row of the truncated cone-shaped projection group 139 has 8 truncated cone-shaped projections 138; in the second row of the set of mesa-shaped projections 139b, the fourth row of the set of mesa-shaped projections 139d, the sixth row of the set of mesa-shaped projections 139f, the eighth row of the set of mesa-shaped projections 139h, and the tenth row of the set of mesa-shaped projections 139j, each row of the set of mesa-shaped projections 139 includes 9 mesa-shaped projections 138.
The diameter of the mesa-shaped projections 138 in the first row of the mesa-shaped projection group 139a was 44.04mm, and the area of the cross section was 154.30mm 2 The diameter of the mesa-shaped projections 138 in the second row of the mesa-shaped projection group 139b was 44.04mm, and the area of the cross section was 154.30mm 2 In the third row 139c of the truncated cone-shaped projection groups, the diameter of the truncated cone-shaped projection 138 is 36.7mm, and the cross-sectional area is 107.16mm 2 In the fourth row 139d of the truncated cone-shaped projection groups, the diameter of the truncated cone-shaped projection 138 is 36.7mm, and the cross-sectional area is 107.16mm 2 In the fifth row 139e, the diameter of the mesa-shaped projection 138 is 30.58mm and the cross-sectional area is 74.41mm 2 In the sixth row 139f of the truncated cone-shaped projection groups, the diameter of the truncated cone-shaped projections 138 is 30.58mm, and the cross-sectional area is 74.41mm 2 In the seventh row 139g of the truncated cone-shaped projection group, the diameter of the truncated cone-shaped projection 138 is 24.47mm, and the cross-sectional area is 47.64mm 2 In the eighth row 139h of the truncated cone-shaped projection group, the diameter of the truncated cone-shaped projection 138 is 24.47mm, and the cross-sectional area is 47.64mm 2 In the ninth row 139i of the truncated cone-shaped projection group, the diameter of the truncated cone-shaped projection 138 is 18.32mm, and the cross-sectional area is 26.70mm 2 In the tenth row 139j of the truncated cone-shaped projection group, the diameter of the truncated cone-shaped projection 138 is 18.32mm, and the cross-sectional area is 26.70mm 2 。
Legs 134 are formed on the other surface of the plate 132 for cooperating with the rail foot grooves to more securely embed the plate 132 into the rail foot 112. In the present embodiment, the number of the legs 134 is 4, and four corners of the other surface of the plate body 132 are formed, respectively.
A plurality of grooves 135 are formed in the other surface of the plate body 132. In the present embodiment, the grooves 135 are five straight grooves, and the five grooves 135 are uniformly distributed on the surface of the plate 132. The five grooves 135 are arranged in parallel and the arrangement direction of the mesa-shaped projections in each row in the extending direction is kept consistent. The width of each five grooves 135 is the same and is 4mm, and the distance between two adjacent grooves 135 is 21mm.
In this embodiment, since the installation gradient of the rail shoe is 1: and 40, the installation standard of the rail bottom support on the rail traffic road section is met. In order to provide a better damping effect, the rubber pad 131 for rail transit is installed such that the second edge 136 is located on the side close to the middle line of the two rails, i.e., the cross-sectional area of the mesa-shaped protrusion 138 on the side close to the middle line of the two rails is larger than the cross-sectional area of the mesa-shaped protrusion 138 on the side away from the middle line of the two rails. Meanwhile, in this embodiment, the rubber pad 131 for rail transportation has a surface facing the bottom of the rail with the point-distributed protrusions 133.
The rubber base plate for rail transit in the embodiment is prepared from the following raw materials in parts by weight:
100 parts of NR-1# natural rubber, 25 parts of white carbon black, 1 part of silane coupling agent, 30 parts of zinc oxide, 1.5 parts of stearic acid, 1.5 parts of anti-aging agent SPC, 1 part of anti-aging agent 2246, 2 parts of microcrystalline wax, 1 part of WB215, 1.5 parts of PEG4000, 5 parts of titanium dioxide, 0.3 part of carbon black, 0.8 part of sulfur, 1 part of dibenzothiazyl disulfide, 2 parts of N-cyclohexyl-2-benzothiazole sulfonamide and 2 parts of tetramethyl thiuram disulfide.
The preparation method of the rubber base plate for subway rail transit provided by the embodiment comprises the following steps:
step 1, adding 100 parts of NR-1# natural rubber into an internal mixer, refining for 7min, adding 1 part of silane coupling agent, 30 parts of zinc oxide, 1.5 parts of stearic acid, 1.5 parts of antioxidant SPC, 1 part of antioxidant 2246, 2 parts of microcrystalline wax, 1 part of WB215, 1.5 parts of PEG4000, 5 parts of titanium dioxide and 0.3 part of carbon black, carrying out internal mixing for 2min, adding 16.7 parts of white carbon black, mixing for 5min, finally adding 8.3 parts of white carbon black, mixing for 4min, controlling the internal temperature of the internal mixer to be 100 ℃, introducing and lifting plugs, discharging rubber, cooling, standing for 10h, and obtaining A-section rubber;
step 2, adding the section A material into an open mill for hot milling, controlling the temperature of a roller of the open mill at 50 ℃, adjusting the roller spacing to be 1.0mm, adding 0.8 part of sulfur, 1 part of dibenzothiazyl disulfide, 2 parts of N-cyclohexyl-2-benzothiazole sulfonamide and 2 parts of tetramethyl thiuram disulfide, turning over for 4 times, packaging for 4 times, thinly passing through for 5 times at a small roller spacing, taking out a piece, cooling and standing to obtain a section B adhesive;
step 3, cutting the section B of glue as required to obtain a glue blank;
and 4, putting the rubber blank into a corresponding mold, and vulcanizing to obtain the rubber base plate composition for subway rail transit.
The performance test of the rubber base plate for subway rail transit prepared in the embodiment is performed, and the test method is the same as that in the first embodiment.
The test results are shown in table 6.
Table 6 test results of rubber packing in example six
Figure BDA0002942856860000341
Figure BDA0002942856860000351
Effects and effects of example six
According to the rubber tie plate for rail transit and the rail transit road section of the present embodiment, the rubber tie plate for rail transit includes the plate body and the protrusion, the protrusion is a point distribution protrusion including a plurality of mesa protrusions, the plurality of mesa protrusions are arranged in ten rows of mesa protrusion groups, and the area of the cross section of the upper surface of the mesa protrusion in the ten rows of mesa protrusion groups gradually decreases from the first edge of the plate body toward the second edge of the plate body, and therefore, the rigidity of the rubber tie plate for rail transit gradually decreases from the first edge of the plate body toward the second edge of the plate body. When the vehicle passes through the curve of the track traffic road section, due to the effect of centrifugal force, the pressure generated by the vehicle on the outer side of the steel rail is larger than the pressure generated on the inner side of the steel rail, correspondingly, the pressure generated by the steel rail on one side of the rubber base plate for track traffic, which is positioned on the outer side of the steel rail, is larger than the pressure generated on one side of the inner side of the steel rail, and because the side, which is provided with the table-shaped protrusion with the larger cross section area, of the rubber base plate for track traffic provided by the embodiment has larger rigidity than the side, which is smaller than the side, which is protruded with the smaller cross section area, of the rubber base plate for track traffic, smaller deformation can be generated under the condition of bearing larger acting force, so that the vehicle running on the curve of the track traffic road section can be kept stable, and vibration and noise are reduced.
Meanwhile, NR-1# natural rubber, white carbon black, a silane coupling agent, zinc oxide, stearic acid, an anti-aging agent SPC, an anti-aging agent 2246, microcrystalline wax, WB215, PEG4000, titanium dioxide, carbon black, sulfur, dibenzothiazyl disulfide, N-cyclohexyl-2-benzothiazole sulfenamide and tetramethyl thiuram disulfide are used as raw materials, so that the minimum static stiffness of the rubber backing plate for rail transit in the embodiment is 15kN/mm, the maximum static stiffness of the rubber backing plate for rail transit is 140kN/mm, and the rubber backing plate for rail transit is matched with the static stiffness of the rubber backing plate for rail transit required at a curve of a subway track with the operation axle weight of 14t and the radius of a curve of a subway track of more than 400m, and is particularly suitable for being installed at a curve of a subway track with the radius of more than 400 m.
Further, because the contact area between one side of the point distribution protruding part close to the first edge and the bottom of the steel rail in the rubber base plate for rail transit is larger than the contact area between one side of the point distribution protruding part close to the second edge and the bottom of the steel rail, larger transverse friction force is generated between the point distribution protruding part and the steel rail, and therefore the rubber base plate for rail transit is more reliably mounted and is not easy to displace.
< example seven >
This embodiment provides a rubber tie plate for rail transit, which has a structure identical to that of the rubber tie plate for rail transit in the sixth embodiment.
The rubber base plate for rail transit in the embodiment is prepared from the following raw materials in parts by weight:
30 parts of 4045M ethylene propylene diene monomer rubber, 70 parts of 3092PM ethylene propylene diene monomer rubber, 55 parts of white carbon black, 20 parts of calcium carbonate, 2 parts of silane coupling agent, 9 parts of paraffin oil, 5 parts of zinc oxide, 1.5 parts of stearic acid, 1 part of antioxidant MB, 0.6 part of antioxidant 2246, 2 parts of microcrystalline wax, 2 parts of polyethylene wax WB42, 3 parts of PEG4000, 3 parts of petroleum resin TL-100, 3 parts of titanium dioxide, 1.5 parts of iron oxide red, 0.5 part of sulfur, 2 parts of dibenzothiazyl disulfide, 1.3 parts of zinc dibutyldithiocarbamate, 0.5 part of tetramethylthiuram disulfide and 1.3 parts of 4,4' -dimorpholine disulfide.
The preparation method of the rubber base plate composition for subway rail transit in the embodiment comprises the following steps:
step 1, adding 30 parts of 4045M ethylene propylene diene monomer and 70 parts of 3092PM ethylene propylene diene monomer into an internal mixer, refining for 7min, adding 2 parts of silane coupling agent, 9 parts of paraffin oil, 5 parts of zinc oxide, 1.5 parts of stearic acid, 1 part of antioxidant MB, 0.6 part of antioxidant 2246, 2 parts of microcrystalline wax, 2 parts of polyethylene wax WB42, 3 parts of PEG4000, 3 parts of petroleum resin TL-100, 3 parts of titanium dioxide and 1.5 parts of iron oxide red, carrying out internal mixing for 2min, adding 36.7 parts of white carbon black and 13.3 parts of calcium carbonate, carrying out mixing for 5min, finally adding 18.3 parts of white carbon black, 6.7 parts of calcium carbonate and 9 parts of paraffin oil, carrying out mixing for 4min, controlling the internal temperature of the internal mixer to be 100 ℃, lifting the bolt to discharge rubber, cooling, and standing for 10h to obtain A-section rubber;
step 2, adding the section A material into an open mill for hot milling, controlling the temperature of a roller of the open mill at 50 ℃, adding 0.5 part of sulfur, 2 parts of dibenzothiazyl disulfide, 1.3 parts of zinc dibutyl dithiocarbamate, 0.5 part of tetramethyl thiuram disulfide and 1.3 parts of 4,4' -dimorpholine disulfide, turning over for 4 times, packaging for 4 times, thinly passing through a small roller distance for 5 times, taking out pieces, cooling and placing to obtain a section B adhesive;
step 3, cutting the section B of glue as required to obtain a glue blank;
and 4, putting the rubber blank into a corresponding mold, and vulcanizing to obtain the rubber base plate for the subway rail transit.
The performance test of the rubber base plate for subway rail transit prepared in the embodiment is carried out, and the test method is the same as that in the first embodiment.
The test results are shown in table 7.
TABLE 7 test results of the rubber packing in example seven
Figure BDA0002942856860000371
Figure BDA0002942856860000381
Effects and effects of EXAMPLE VII
According to the rubber tie plate for rail transit related to the embodiment, the minimum static rigidity of the rubber tie plate for rail transit is 20kN/mm, and the maximum static rigidity of the rubber tie plate for rail transit is 160kN/mm, so that the rubber tie plate is matched with the static rigidity of the rubber tie plate for rail transit required by the curve of a subway track (the curve radius is greater than 400 meters) for running a subway with the axle weight of 16t, and is particularly suitable for being installed at the curve of the subway track with the curve radius greater than 400 meters.
Further, the rubber backing plate composition for rail transit used in the rubber backing plate for rail transit adopted in the embodiment is composed of ethylene propylene diene monomer, so that the rubber backing plate for rail transit provided in the embodiment has better weather resistance, can bear larger temperature difference change, and is more suitable for elevated road sections or road foundation sections.
The above embodiments are preferred examples of the present invention, and are not intended to limit the scope of the present invention.
In other embodiments, more or fewer grooves may be provided according to actual needs.
In other embodiments, the plurality of grooves may be configured as a plurality of curved grooves.
In other embodiments, the extending direction of the groove is not limited to be consistent with the length direction of the strip-shaped protrusion, and may be perpendicular to the length direction of the strip-shaped protrusion or at any angle.
In other embodiments, the plurality of grooves may have different widths and may be arranged to gradually change from one edge of the plate body to another edge of the plate body.
In some cases, if the installation of the rail bottom support does not meet the installation standard of the rail traffic road section, in order to ensure that the rubber pad for rail transit can provide enough damping effect, the rubber pad for rail transit is installed, the point distribution protrusion is positioned on one side away from the middle line of the two rails, but the orientation of the surface of the rubber pad for rail transit provided with the strip distribution protrusion and the point distribution protrusion is not limited, and the rubber pad for rail transit can be arranged towards the bottom of the rails or the upper surface of the rail bottom support.

Claims (23)

1. A rubber tie plate for rail transit, which is used by matching with a rail of a rail, is characterized by comprising:
a plate body; and
a protrusion part provided on one surface of the plate body,
wherein the protrusion comprises a plurality of groups of protrusion parts,
the sets of protruding members are distributed from one edge of the plate body to the other edge opposite to the one edge,
the rubber base plate for rail transit comprises the following raw materials in parts by weight:
100 parts of matrix rubber, 20-100 parts of filler, 0-5 parts of silane coupling agent, 5-35 parts of active agent, 0-15 parts of plasticizer, 3-10 parts of pigment, 1-3 parts of anti-aging agent, 3-15 parts of functional auxiliary agent, 0.3-2.5 parts of vulcanizing agent and 2-8 parts of vulcanization accelerator,
the protrusion part is a strip distribution protrusion part which comprises a plurality of strip protrusions, and the width of each strip protrusion is gradually reduced; or
The protrusions are a combination of bar-distributed protrusions and point-distributed protrusions or point-distributed protrusions, wherein the point-distributed protrusions include a plurality of rows of mesa-shaped protrusions formed thereon, and the area of the cross section of each row of the mesa-shaped protrusions is gradually reduced.
2. The rubber tie plate for rail transit according to claim 1, characterized in that:
wherein the protrusions are a combination of strip-distributed protrusions and point-distributed protrusions,
the bar distribution protrusion is formed adjacent to the point distribution protrusion,
the plate body is integrally formed with the bar distribution protrusion and the point distribution protrusion.
3. The rubber pad for rail transit according to claim 2, wherein:
wherein the strip-shaped protrusion is formed by extending along one edge of the plate body,
the truncated projections are disposed at one side of the long side of the bar-shaped projection and distributed to the other edge opposite to the one edge.
4. The rubber pad for rail transit according to claim 3, wherein:
wherein a strip-shaped groove is arranged between two adjacent strip-shaped bulges,
the plurality of the truncated cone-shaped protrusions are formed with a plurality of rows in the length direction of the bar-shaped protrusions,
the table-shaped protrusions in two adjacent rows are arranged in a staggered mode.
5. The rubber tie plate for rail transit according to claim 4, wherein:
wherein the number of the strip-shaped protrusions is three or more, the number of the strip-shaped grooves is at least two, the width of the strip-shaped groove is gradually reduced from the one edge to the other edge,
the plurality of mesa-shaped projections have a cross section, the area of the cross section of each of the mesa-shaped projections in each row is the same, the area of the cross section of each row of the mesa-shaped projections is gradually decreased from the one edge toward the other edge,
the upper surface of the strip-shaped protrusion is flush with the upper surface of the table-shaped protrusion.
6. The rubber pad for rail transit according to claim 5, wherein:
wherein, the number of the strip-shaped bulges is three, and the strip-shaped bulges are respectively a first strip-shaped bulge, a second strip-shaped bulge and a third strip-shaped bulge from the beginning along the edge,
a first groove is arranged between the first strip-shaped protrusion and the second strip-shaped protrusion, a second groove is arranged between the second strip-shaped protrusion and the third protrusion,
the width of the first strip-shaped protrusion is 10mm-15mm, the width of the second strip-shaped protrusion is 19mm-20mm, the width of the third strip-shaped protrusion is 21mm-22mm,
the point distribution protrusion part includes a plurality of mesa-shaped protrusions which are disposed at one side of the long side of the bar-shaped protrusion and distributed to the other edge opposite to the one edge,
six rows of the truncated cone-shaped bulges are formed in the length direction of the strip-shaped bulges, one side of the long side edge of each strip-shaped bulge is provided with a first row of truncated cone-shaped bulges, a second row of truncated cone-shaped bulges, a third row of truncated cone-shaped bulges, a fourth row of truncated cone-shaped bulges, a fifth row of truncated cone-shaped bulges and a sixth row of truncated cone-shaped bulges,
the distance between the truncated cone-shaped bulges of two adjacent rows is 15mm-20mm,
the area of the cross section of the first frustum-shaped protrusion is 100mm 2 -120mm 2 The cross section area of the second row of the truncated cone-shaped protrusions is 100mm 2 -120mm 2 ，
The area of the cross section of the third row of the truncated cone-shaped protrusions is 70mm 2 -90mm 2 ，
The cross section area of the fourth row of the truncated cone-shaped protrusions is 70mm 2 -90mm 2 ，
The area of the cross section of the fifth row of the truncated cone-shaped protrusions is 40mm 2 -60mm 2 ，
The area of the cross section of the sixth row of the truncated cone-shaped protrusions is 40mm 2 -60mm 2 。
7. The rubber tie plate for rail transit according to claim 1, characterized in that:
wherein the protruding parts are strip-distributed protruding parts,
the strip-shaped protrusions extend along one edge of the plate body, the plurality of strip-shaped protrusions are distributed from one edge of the plate body to the other edge opposite to the one edge,
the width of the strip-shaped protrusions is gradually reduced from the one edge to the other edge, and a strip-shaped groove is formed between every two adjacent strip-shaped protrusions.
8. Rubber pad for rail transit according to claim 7,
wherein the widths of all the strip-shaped grooves are equal.
9. Rubber pad for rail transit according to claim 7,
wherein, the number of the strip-shaped protrusions is 11, and the first strip-shaped protrusion, the second strip-shaped protrusion, the third strip-shaped protrusion, the fourth strip-shaped protrusion, the fifth strip-shaped protrusion, the sixth strip-shaped protrusion, the seventh strip-shaped protrusion, the eighth strip-shaped protrusion, the ninth strip-shaped protrusion, the tenth strip-shaped protrusion and the eleventh strip-shaped protrusion are respectively arranged along the edge,
the width of the first bar-shaped protrusion is 19mm-21mm,
the width of the second strip-shaped protrusion is 17mm-19mm,
the width of the third strip-shaped protrusion is 10mm-12mm,
the width of the fourth strip-shaped protrusion is 9mm-10mm,
the width of the fifth strip-shaped protrusion is 8mm-9mm,
the width of the sixth strip-shaped protrusion is 7mm-8mm,
the width of the seventh strip-shaped protrusion is 6mm-7mm,
the width of the eighth strip-shaped protrusion is 5mm-6mm,
the width of the ninth strip-shaped protrusion is 4mm-5mm,
the width of the tenth strip-shaped protrusion is 4mm-5mm,
the width of the eleventh strip-shaped protrusion is 2mm-3mm.
10. The rubber pad for rail transit according to claim 1, wherein:
wherein the protruding parts are point distribution protruding parts,
the plurality of truncated projections are distributed from one edge of the plate body to the other edge opposite to the one edge,
the area of the cross section of each row of the mesa-shaped projections gradually decreases from the one edge toward the other edge.
11. Rubber pad for rail transit according to claim 10,
wherein, two adjacent rows of the table-shaped protrusions are arranged in a staggered manner.
12. The rubber pad for rail transit according to claim 10,
wherein, the intervals of the two adjacent rows of the truncated cone-shaped protrusions are equal.
13. Rubber pad for rail transit according to claim 10,
wherein, 10 rows of the platform-shaped bulges are formed in the length direction of the plate body, and a first row of the platform-shaped bulges, a second row of the platform-shaped bulges, a third row of the platform-shaped bulges, a fourth row of the platform-shaped bulges, a fifth row of the platform-shaped bulges, a sixth row of the platform-shaped bulges, a seventh row of the platform-shaped bulges, an eighth row of the platform-shaped bulges, a ninth row of the platform-shaped bulges and a tenth row of the platform-shaped bulges are arranged along the edge,
in the first row of the truncated cone-shaped projections, the third row of the truncated cone-shaped projections, the fifth row of the truncated cone-shaped projections, the seventh row of the truncated cone-shaped projections, and the ninth row of the truncated cone-shaped projections, each row of the truncated cone-shaped projections includes 8 of the truncated cone-shaped projections,
among the second row of mesa-shaped projections, the fourth row of mesa-shaped projections, the sixth row of mesa-shaped projections, the eighth row of mesa-shaped projections, and the tenth row of mesa-shaped projections, each row of mesa-shaped projections includes 9 of the mesa-shaped projections,
the area of the cross section of the truncated cone-shaped protrusion in the first row of truncated cone-shaped protrusions is 130mm 2 -160mm 2 ，
The cross-sectional area of the truncated cone-shaped protrusions in the second row of truncated cone-shaped protrusions is 130mm 2 -160mm 2 ，
The cross-sectional area of the truncated cone-shaped protrusions in the third row of truncated cone-shaped protrusions is 90mm 2 -120mm 2 ，
The cross section area of the truncated cone-shaped protrusions in the fourth row of truncated cone-shaped protrusions is 90mm 2 -120mm 2 ，
The cross section area of the frustum-shaped protrusion in the fifth row of frustum-shaped protrusions is 60mm 2 -80mm 2 ，
The cross section area of the truncated cone-shaped protrusions in the sixth row of truncated cone-shaped protrusions is 60mm 2 -80mm 2 ，
The cross section area of the truncated cone-shaped protrusions in the seventh row of truncated cone-shaped protrusions is 40mm 2 -50mm 2 ，
The cross section area of the truncated cone-shaped protrusions in the eighth row of truncated cone-shaped protrusions is 40mm 2 -50mm 2 ，
The area of the cross section of the truncated cone-shaped protrusion in the ninth row of truncated cone-shaped protrusions is 20mm 2 -30mm 2 ，
The cross section area of the truncated cone-shaped protrusion in the tenth row of the truncated cone-shaped protrusions is 20mm 2 -30mm 2 。
14. The rubber pad for rail transit according to claim 1, wherein:
wherein the upper surfaces of the protrusions are flush.
15. The rubber pad for rail transit according to any one of claims 1 to 14, further comprising:
and a plurality of grooves formed on the other surface of the plate body.
16. The rubber tie plate for rail transit according to claim 15, wherein:
wherein, multichannel slot is the multichannel bar slot that is parallel to each other, its extending direction with protruding the length direction of bar is unanimous.
17. The rubber tie plate for rail transit of claim 16, wherein:
wherein a width of the plurality of grooves is gradually changed from the one edge toward the other edge.
18. The rubber pad for rail transit according to claim 15, wherein:
wherein, multichannel slot is multichannel curvilinear motion slot.
19. The rubber pad for rail transit according to claim 15, wherein:
wherein, multichannel slot is parallel to each other and evenly distributed's multichannel bar slot, its extending direction with the bar is protruding length direction looks vertical.
20. Rubber pad for rail transit according to claim 1,
wherein the track is also provided with a track bottom support which is arranged below the steel rail,
the rubber base plate for rail transit is arranged between the steel rail and the rail bottom support,
the track has two parallel arrangement's the rail, the installation slope of rail collet is 1: (30-50).
21. A method for preparing a rubber tie plate for subway rail transit, which is used for preparing the rubber tie plate for subway rail transit as claimed in any one of claims 1-20, and is characterized by comprising the following steps:
step 1, adding matrix rubber into an internal mixer, refining for 5-8 min, adding an active agent, an anti-aging agent, a functional assistant, a silane coupling agent and a pigment, carrying out internal mixing for 1-2 min, adding a filler accounting for 30-40% of the total weight of the filler, mixing for 3-8 min, finally adding the rest filler and a plasticizer, mixing for 3-5 min, controlling the internal temperature of the internal mixer to be 95-125 ℃, introducing and lifting a bolt to discharge rubber, cooling, and standing for 8-24 h to obtain a rubber in section A;
step 2, adding the A-section rubber into an open mill for hot milling, controlling the temperature of a roller of the open mill to be 40-55 ℃, adding a vulcanizing agent and a vulcanization accelerator, turning over, packing, and after small roll spacing and thin passing, discharging, cooling and standing to obtain B-section rubber;
step 3, cutting the section B of glue as required to obtain a glue blank;
and 4, putting the rubber blank into a corresponding mold, and vulcanizing to obtain the rubber base plate for subway rail transit.
22. A rail transit section of road, having:
a steel rail; and
a rubber backing plate matched with the steel rail of the track for use,
wherein the rubber pad is the rubber pad for rail transit in any one of claims 1 to 19.
23. The rail traffic segment of claim 22, further comprising:
a rail bottom support arranged below the rubber base plate
The rubber pad for rail transit according to claim 20.
CN202110185366.0A 2021-02-10 2021-02-10 Rubber base plate for rail transit, preparation method and rail transit road section Active CN113004582B (en)

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