阅读说明：本技术 高铁用弹簧卡扣及其生产工艺 (Spring buckle for high-speed rail and production process thereof ) 是由 卜常军 于 2020-04-21 设计创作，主要内容包括：本发明公开了高铁用弹簧卡扣,包括底座和条形弹簧,所述底座的上端中部焊接有滑座,所述滑座的内部滑嵌有限位杆,所述限位杆的上端焊接有安装座,所述底座的上端右部焊接有扣座,所述扣座的上部转动连接有扣件。本发明中,首先,将条形弹簧的尾部穿过限位杆,放置在扣座的上端,转动扣件,将扣件的头部与扣座的右端相贴合,通过螺套与螺栓,将扣件与扣座锁合,此时条形弹簧位于安装座底部开设的凹槽中,通过螺套和螺栓将条形弹簧和安装座紧密扣合,实现了该弹簧卡扣在对弹簧扣合时,能够阻止条形弹簧相对于挡板横向移动,并且条形弹簧的中部和尾部均被扣合,进一步提升了卡扣对条形弹簧扣合时的稳定性。(The invention discloses a spring buckle for a high-speed rail, which comprises a base and a strip-shaped spring, wherein a sliding seat is welded in the middle of the upper end of the base, a limiting rod is embedded in the sliding seat in a sliding manner, an installation seat is welded at the upper end of the limiting rod, a buckle seat is welded at the right part of the upper end of the base, and a buckle is rotatably connected to the upper part of the buckle seat. According to the invention, firstly, the tail part of the strip spring penetrates through the limiting rod and is placed at the upper end of the buckle seat, the buckle is rotated, the head part of the buckle is attached to the right end of the buckle seat, the buckle and the buckle seat are locked through the threaded sleeve and the bolt, the strip spring is positioned in the groove formed in the bottom of the installation seat at the moment, and the strip spring and the installation seat are tightly buckled through the threaded sleeve and the bolt, so that when the spring is buckled, the strip spring can be prevented from moving transversely relative to the baffle, the middle part and the tail part of the strip spring are buckled, and the stability of buckling of the buckle on the strip spring is further improved.)

1. Spring buckle for high-speed railway, including base (1) and bar spring (2), its characterized in that, the upper end middle part welding of base (1) has slide (3), the inside slip of slide (3) has gag lever post (4), the upper end welding of gag lever post (4) has mount pad (5), the upper end right part welding of base (1) has detains seat (9), the upper portion of detaining seat (9) is rotated and is connected with fastener (10).

2. The spring buckle for high-speed rail according to claim 1, wherein the head of the buckle (10) is in an L-shaped structure.

3. The spring buckle for the high-speed rail according to claim 1, wherein a sliding sleeve (6) is welded to the left part of the upper end of the base (1).

4. The spring buckle for high-speed rail according to claim 3, wherein a sliding rod (7) is slidably inserted into the sliding sleeve (6).

5. The spring buckle for high-speed rail according to claim 4, wherein the upper end of the sliding rod (7) is welded with a baffle (8).

6. The spring buckle for the high-speed rail according to claim 1, wherein a strip spring (2) is arranged above the base (1), and the head and the tail of the strip spring (2) are respectively placed at the upper ends of the baffle (8) and the buckle seat (9).

7. The production process of the spring buckle for the high-speed rail is characterized by comprising the spring buckle for the high-speed rail as claimed in any one of claims 1 to 6, and comprises the following steps: 100 tons of converters, 100 tons of LF refining furnaces, 150mm multiplied by 150mm small square billets, billet inspection, heating of a walking beam type heating furnace, single-line continuous high-speed non-torsion rolling, stelmor cooling, coil collection, PF line conveying, inspection, trimming, bundling, weighing, tag hanging and warehousing;

adopting a 100-ton converter to smelt and blow molten steel, adding 5150kg of lime, 2361kg of dolomite and 4380kg of sludge balls into the converter, adopting a reasonable oxygen supply amount of 4925m3, and simultaneously controlling the position of an oxygen lance to be 160cm, so as to ensure that the content of C in the discharged steel is 0.46 percent and the content of P in the discharged steel is 0.010 percent;

introducing molten steel obtained by blowing in a 100-ton converter into an LF refining furnace for refining, adding 2300kg of low-aluminum silicon-iron alloy into the LF refining furnace for molten steel alloying, adding 150kg of calcium carbide for deoxidation, adding 500kg of lime and 300kg of fluorite for slagging, controlling the content of Al2O3 in slag to be 7%, controlling the refining time to be 70 minutes, controlling the soft stirring time to be 20 minutes, and keeping the white slag for 25 minutes;

transferring the refined molten steel into a tundish with the caliber of a nozzle phi 32, and electromagnetically stirring by adopting a crystallizer with the frequency of 5Hz and the current of 246A at the superheat degree of 25 ℃, the pulling speed of 2.0m/min and the specific water amount of 0.75L/kg; casting to obtain 150mm × 150mm small square billets, wherein the center segregation, the center shrinkage cavity and the center porosity are all 1 grade;

placing a 150mm multiplied by 150mm small square billet in a walking beam type heating furnace, and heating in a reducing atmosphere;

the heating section of the heating furnace is controlled at 1030 ℃, the soaking section is controlled at 1080 ℃, and the furnace temperature detection adopts an independent PLC automatic control system to ensure that the temperature difference of the section of the billet is less than 30 ℃;

descaling the heated 150mm multiplied by 150mm square billet by high-pressure water, then sending the billet into a rolling procedure, carrying out 6-pass rough rolling, 8-pass intermediate rolling, 2-pass pre-finish rolling, 2-pass finish rolling and 4-pass reducing sizing mill set, and then scattering wire rods with the specification of phi 13mm on a Stelmo cooling roller bed by a wire laying head;

setting the initial rolling temperature, the finish rolling inlet temperature, the reduction diameter inlet temperature and the spinning temperature to 985 ℃, 920 ℃, 900 ℃ and 850 ℃ respectively, and setting the rolling speed of a rolling mill to be 38 m/s;

the rolling temperature is controlled by 5 groups of water tanks on the production line, and the water flow of the 5 groups of water tanks is 3000L/min, 1000L/min, 700L/min and 600L/min respectively;

the rolled steel wire adopts a delayed cooling process, the speed of a roller way at the inlet section of a stelmor conveyor is set to be 16m/min, and a 2-6 heat-preservation cover is closed;

and (3) collecting and coiling the cooled steel wires, conveying PF (fiber reinforced plastics) wires, inspecting, trimming, bundling, weighing, listing and warehousing to obtain the special 60Si2Mn spring steel hot-rolled wire rod for the railway fastener.

Technical Field

The invention relates to the technical field of steel rail fasteners, in particular to a spring fastener for a high-speed rail and a production process thereof.

Background

Rail fasteners are parts of a track that are used to connect rails to sleepers (or other types of undersized foundations), also known as intermediate connecting parts. Its function is to fix the rail to the sleeper, maintain the gauge and prevent the rail from moving longitudinally and transversely relative to the sleeper.

The back is opened to the railway, because high-speed railway driving speed is high, density is big, it has sufficient intensity and durability to need each part of fastener, however current spring buckle for the high-speed railway, mostly all carry out local lock to bar spring through bolt and swivel nut, the lock scope to bar spring is less, thereby stability when buckling to the spring has certain influence, and current spring buckle often directly carries out the lock through bar spring to the rail, area of contact between the two is less, consequently, still have certain unstable factor when buckling to the rail.

Disclosure of Invention

The invention aims to: the spring buckle for the high-speed rail is provided for solving the problem that a certain unstable factor is still generated when a strip spring and a steel rail are buckled in the conventional spring buckle for the high-speed rail.

In order to achieve the purpose, the invention adopts the following technical scheme: spring buckle for high-speed railway, including base and bar spring, the upper end middle part welding of base has the slide, the inside sliding of slide has the gag lever post, the upper end welding of gag lever post has the mount pad, the upper end right part welding of base has detains the seat, the upper portion rotation of detaining the seat is connected with the fastener.

As a further description of the above technical solution:

the head of the fastener is of an L-shaped structure.

As a further description of the above technical solution:

the upper end left part welding of base has the sliding sleeve.

As a further description of the above technical solution:

a sliding rod is embedded in the sliding sleeve in a sliding manner.

As a further description of the above technical solution:

the upper end of the sliding rod is welded with a baffle.

As a further description of the above technical solution:

a strip spring is arranged above the base, and the head and the tail of the strip spring are respectively placed at the upper ends of the baffle and the buckling seat.

The invention also aims to provide a production process of the spring buckle for the high-speed rail, which comprises the following steps of: 100 tons of converters, 100 tons of LF refining furnaces, 150mm multiplied by 150mm small square billets, billet inspection, heating of a walking beam type heating furnace, single-line continuous high-speed non-torsion rolling, stelmor cooling, coil collection, PF line conveying, inspection, trimming, bundling, weighing, tag hanging and warehousing;

adopting a 100-ton converter to smelt and blow molten steel, adding 5150kg of lime, 2361kg of dolomite and 4380kg of sludge balls into the converter, adopting a reasonable oxygen supply amount of 4925m3, and simultaneously controlling the position of an oxygen lance to be 160cm, so as to ensure that the content of C in the discharged steel is 0.46 percent and the content of P in the discharged steel is 0.010 percent;

introducing molten steel obtained by blowing in a 100-ton converter into an LF refining furnace for refining, adding 2300kg of low-aluminum silicon-iron alloy into the LF refining furnace for molten steel alloying, adding 150kg of calcium carbide for deoxidation, adding 500kg of lime and 300kg of fluorite for slagging, controlling the content of Al2O3 in slag to be 7%, controlling the refining time to be 70 minutes, controlling the soft stirring time to be 20 minutes, and keeping the white slag for 25 minutes;

transferring the refined molten steel into a tundish with the caliber of a nozzle phi 32, and electromagnetically stirring by adopting a crystallizer with the frequency of 5Hz and the current of 246A at the superheat degree of 25 ℃, the pulling speed of 2.0m/min and the specific water amount of 0.75L/kg; casting to obtain 150mm × 150mm small square billets, wherein the center segregation, the center shrinkage cavity and the center porosity are all 1 grade;

placing a 150mm multiplied by 150mm small square billet in a walking beam type heating furnace, and heating in a reducing atmosphere;

the heating section of the heating furnace is controlled at 1030 ℃, the soaking section is controlled at 1080 ℃, and the furnace temperature detection adopts an independent PLC automatic control system to ensure that the temperature difference of the section of the billet is less than 30 ℃;

descaling the heated 150mm multiplied by 150mm square billet by high-pressure water, then sending the billet into a rolling procedure, carrying out 6-pass rough rolling, 8-pass intermediate rolling, 2-pass pre-finish rolling, 2-pass finish rolling and 4-pass reducing sizing mill set, and then scattering wire rods with the specification of phi 13mm on a Stelmo cooling roller bed by a wire laying head;

setting the initial rolling temperature, the finish rolling inlet temperature, the reduction diameter inlet temperature and the spinning temperature to 985 ℃, 920 ℃, 900 ℃ and 850 ℃ respectively, and setting the rolling speed of a rolling mill to be 38 m/s;

the rolling temperature is controlled by 5 groups of water tanks on the production line, and the water flow of the 5 groups of water tanks is 3000L/min, 1000L/min, 700L/min and 600L/min respectively;

the rolled steel wire adopts a delayed cooling process, the speed of a roller way at the inlet section of a stelmor conveyor is set to be 16m/min, and a 2-6 heat-preservation cover is closed;

and (3) collecting and coiling the cooled steel wires, conveying PF (fiber reinforced plastics) wires, inspecting, trimming, bundling, weighing, listing and warehousing to obtain the special 60Si2Mn spring steel hot-rolled wire rod for the railway fastener.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. according to the invention, the sliding sleeve is arranged on the base, the sliding rod is arranged in the sliding sleeve, the baffle is arranged on the sliding rod, the baffle is pulled upwards, the sliding rod at the lower end of the baffle slides upwards along the sliding sleeve, when the distance between the baffle and the base is in accordance with the thickness of the side wing of the steel rail, the steel rail can be clamped between the base and the baffle, at the moment, the steel rail can be tightly clamped on the base through the baffle by the strip spring, the contact area of the steel rail and the buckle can be increased by the spring buckle, under the condition that the pressure of the strip spring on the steel rail is not changed, the friction force between the steel rail and the buckle is improved, and the stability of the device on the steel rail is improved.

2. According to the invention, the base is provided with the sliding seat and the buckling seat, the limiting rod is arranged in the sliding seat, the mounting seat is arranged on the limiting rod, the buckling seat is provided with the fastener, the limiting rod is pulled upwards, the tail part of the strip-shaped spring in the M-shaped structure penetrates through the limiting rod and is placed at the upper end of the buckling seat, the fastener is rotated, the head part of the fastener in the L-shaped structure is attached to the right end of the buckling seat, the fastener is locked with the buckling seat through the threaded sleeve and the bolt, the strip-shaped spring is positioned in the groove formed in the bottom of the mounting seat at the moment, the strip-shaped spring is tightly buckled with the mounting seat through the threaded sleeve and the bolt, the transverse movement of the strip-shaped spring relative to the baffle plate can be prevented when the strip-shaped spring is buckled, the middle part and the tail part of the strip-shaped spring are buckled, and the stability of the buckle in buckling of the strip-shaped spring is further improved.

3. According to the spring buckle for the high-speed rail, the production process solves the problems that the requirement on the purity of the wire rod spring steel is high, the surface of the wire rod is easy to decarbonize, the strength of the spring steel is high, and the spring steel is difficult to stably straighten, and the like, and realizes a new breakthrough of producing the railway fastener by adopting the wire rod spring steel; the wire rod spring steel is used for preparing the fastener, and the straight spring steel is used for producing the fastener relatively, so that the processing cost of the fastener is obviously reduced, the utilization rate of the spring steel is improved, and the enterprise benefit is improved.

Drawings

FIG. 1 illustrates a side view provided in accordance with an embodiment of the present invention;

FIG. 2 illustrates a front view provided in accordance with an embodiment of the present invention;

fig. 3 shows a partial enlarged view at a provided according to an embodiment of the present invention.

Illustration of the drawings:

1. a base; 2. a bar spring; 3. a slide base; 4. a limiting rod; 5. a mounting seat; 6. a sliding sleeve; 7. a slide bar; 8. a baffle plate; 9. a buckle seat; 10. a fastener.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1-3, the present invention provides a technical solution: spring buckle for high-speed railway, including base 1 and bar spring 2, the upper end middle part welding of base 1 has slide 3, the inside slip of slide 3 has gag lever post 4, the upper end welding of gag lever post 4 has mount pad 5, the upper end right part welding of base 1 has detain seat 9, the upper portion of detaining seat 9 is rotated and is connected with fastener 10, bar spring 2 is M type structure, gag lever post 4's diameter is less than the middle part interval that is M type bar spring 2, the bottom of mount pad 5 is seted up flutedly, and the rubber pad is installed to the bottom of recess, when laminating with bar spring 2, reduce the wearing and tearing to bar spring 2.

Specifically, as shown in fig. 1 and 3, the head of the fastener 10 is in an L-shaped structure, and the head of the fastener 10 in the L-shaped structure can be attached to the right end of the fastener seat 9.

Specifically, as shown in fig. 1 and 2, a sliding sleeve 6 is welded at the left part of the upper end of a base 1, a sliding rod 7 is embedded in the sliding sleeve 6 in a sliding manner, a baffle 8 is welded at the upper end of the sliding rod 7, a bar-shaped spring 2 is arranged above the base 1, the head and the tail of the bar-shaped spring 2 are respectively placed at the upper ends of the baffle 8 and a buckling seat 9, and wavy lines are installed at the bottom end of the baffle 8, so that friction between the steel rail and the sliding sleeve is increased.

The working principle is as follows: when in use, firstly, a user needs to pull the baffle 8 upwards to enable the slide rod 7 at the lower end of the baffle 8 to slide upwards along the sliding sleeve 6, when the distance between the baffle 8 and the base 1 is in due time with the thickness of the side wing of the steel rail, the steel rail can be clamped between the base 1 and the baffle 8, at the moment, the bar spring 2 can tightly lock the steel rail on the base 1 through the baffle 8, the contact area of the spring buckle when the steel rail is locked with the buckle can be increased, under the condition that the pressure of the bar spring 2 to the steel rail is unchanged, the friction force between the steel rail and the buckle is improved, the baffle 8 is prevented from moving transversely relative to the steel rail, thereby improving the stability of the device when the steel rail is locked, secondly, the limiting rod 4 is pulled upwards, the tail part of the bar spring 2 in an M-shaped structure passes through the limiting rod 4 and is placed at the upper end of the buckle seat 9, the fastener 10 is rotated, the head part of the fastener 10 in an L-shaped structure is attached to the right end of the buckle seat 9, through swivel nut and bolt, with fastener 10 and the closure of detaining seat 9, bar spring 2 is arranged in the recess that 5 bottoms of mount pad were seted up this moment, through swivel nut and bolt with bar spring 2 and the inseparable lock of mount pad 5, realized that this spring buckle is when 2 buckles to bar spring, can restrict bar spring 2 and move on the horizontal direction along base 1 to bar spring 2's middle part and afterbody are all buckled, have further promoted the buckle to 2 stability when buckles of bar spring.

Example 2

A production process of a spring buckle for a high-speed rail comprises the following steps:

100-ton converter-100-ton LF refining furnace-150 mm multiplied by 150mm small square billet continuous casting-billet inspection-walking beam type heating furnace heating-single-line continuous high-speed non-twist rolling-stelmor cooling-coil collection-PF line conveying-inspection, trimming-bundling-weighing, tag hanging-warehousing.

Smelting and blowing molten steel by adopting a 100-ton converter, adding 4000Kg of lime, 2000Kg of dolomite and 3000Kg of sludge balls into the converter, adopting a reasonable oxygen supply amount of 4800M 3, simultaneously controlling the position of an oxygen lance to be 150cm, ensuring that the content of C in the steel tapping is 0.45 percent and the content of P in the steel tapping is 0.008 percent, and discharging the molten steel after single slag making.

Introducing molten steel obtained by blowing in a 100-ton converter into an LF refining furnace for refining, adding 2000Kg of low-aluminum silicon-iron alloy into the LF refining furnace for molten steel alloying, adding 100Kg of calcium carbide for deoxidation, adding 400Kg of lime and 200Kg of fluorite for slagging, controlling the content of Al2O3 in slag to be 5%, controlling the refining time to be 60 minutes, controlling the soft stirring time to be 15 minutes, and keeping the white slag for 20 minutes.

Transferring the refined molten steel into a tundish with a nozzle caliber of phi 28, and electromagnetically stirring by adopting a crystallizer with the frequency of 5Hz and the current of 246A at the superheat degree of 20 ℃, the pulling speed of 1.90m/min and the specific water amount of 0.60L/kg; casting to obtain 150mm × 150mm small square billet with center segregation, center shrinkage cavity and center porosity all in 1 grade.

A150 mm by 150mm billet was placed in a walking beam type heating furnace and heated in a reducing atmosphere. The heating section of the heating furnace is controlled at 1000 ℃, the soaking section is controlled at 1050 ℃, and the furnace temperature detection adopts an independent PLC automatic control system to ensure that the temperature difference of the section of the billet is less than 30 ℃.

The heated 150mm x 150mm square billet is descaled by high-pressure water and then sent to a rolling procedure, and is subjected to 6-pass rough rolling, 8-pass intermediate rolling, 2-pass pre-finish rolling, 2-pass finish rolling and 4-pass reducing sizing mill set, and then wire rods with the specification of phi 13mm are scattered on a Stelmor cooling roller bed by a wire laying head. The initial rolling temperature, the finish rolling inlet temperature, the reduction diameter inlet temperature and the spinning temperature were set to 970 ℃, 900 ℃, 880 ℃ and 840 ℃, respectively, and the rolling speed of the rolling mill was 35 m/s.

The rolling temperature is controlled by 5 groups of water tanks on the production line, and the water flow of the 5 groups of water tanks is respectively 3000L/min, 1000L/min, 700L/min and 600L/min.

The rolled steel wire adopts a delayed cooling process, the speed of a roller way at the inlet section of the stelmor conveyor is set to be 16m/min, and a 2-6 heat-insulating cover is closed.

And (3) collecting and coiling the cooled steel wires, conveying PF (fiber reinforced plastics) wires, inspecting, trimming, bundling, weighing, listing and warehousing to obtain the special 60Si2Mn spring steel hot-rolled wire rod for the railway fastener.

The strength of the wire rod manufactured by the method is 950MPa, and stable straightening can be realized; the depth of the decarburization layer of the wire rod is less than or equal to 50 mu m, the depth of the decarburization layer of the straight strip can reach 150 mu m, and the depth of the decarburization layer is obviously superior to that of the straight strip; the surface size and out-of-roundness of the wire rod can be controlled to C level, and the straight rod can be controlled to B level.

The Rockwell hardness of the railway fastener product produced by the wire rod is 59-60HRC after quenching, the Rockwell hardness of the fastener produced by the straight strip is 58-62 HRC, the Rockwell hardness of the fastener produced by the HRC after tempering is 42-44HRC, the fastener produced by the straight strip is 41-46 HRC, and the product is relatively stable and uniform in hardness.

The head and the tail are cut once only in the process of producing the railway fastener by the wire rod, and the loss of the cut head and the cut tail is less. Compared with the 12m straight strips, each straight strip needs to be cut once, and the loss of the head and the tail is large. Compared with a straight wire, the wire rod can save 200 yuan/ton steel only in the aspect of head and tail cutting loss, and has a very wide popularization prospect.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.