CN107724191B - Manufacturing method of elastic clamp for turnout of passenger special line and elastic clamp manufactured by same - Google Patents
Manufacturing method of elastic clamp for turnout of passenger special line and elastic clamp manufactured by same Download PDFInfo
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- CN107724191B CN107724191B CN201610671507.9A CN201610671507A CN107724191B CN 107724191 B CN107724191 B CN 107724191B CN 201610671507 A CN201610671507 A CN 201610671507A CN 107724191 B CN107724191 B CN 107724191B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 238000005452 bending Methods 0.000 claims abstract description 38
- 238000000034 method Methods 0.000 claims abstract description 27
- 238000010438 heat treatment Methods 0.000 claims description 32
- 210000001624 hip Anatomy 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 7
- 238000013459 approach Methods 0.000 claims description 5
- 238000005536 corrosion prevention Methods 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000005496 tempering Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 abstract description 7
- 239000000835 fiber Substances 0.000 abstract description 6
- 239000002184 metal Substances 0.000 abstract description 6
- 238000000465 moulding Methods 0.000 abstract description 4
- 238000003825 pressing Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 6
- 230000007423 decrease Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000009966 trimming Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000035929 gnawing Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B7/00—Switches; Crossings
- E01B7/22—Special sleepers for switches or crossings; Fastening means therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D7/00—Bending rods, profiles, or tubes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Railway Tracks (AREA)
Abstract
The invention discloses a manufacturing method of an elastic clamp for a turnout of a passenger special line and the elastic clamp manufactured by the manufacturing method, which comprises the following steps: performing one-time bending on the cylindrical blanking piece to obtain a to-be-pressed piece which is approximately V-shaped; stamping the to-be-pressed piece along the direction perpendicular to the plane where the to-be-pressed piece is located so as to obtain a stamping piece; and (3) performing secondary bending on the stamping part at the outer side of the stamping part adjacent to the two free ends of the stamping part to obtain the elastic clamp, wherein the distance between the two ends of the elastic clamp is firstly reduced and then increased along the extending direction of the elastic clamp. According to the manufacturing method of the elastic clamp for the railway switch of the passenger special line, disclosed by the invention, the size of the elastic clamp can be more accurate and the continuity of metal fibers of the elastic clamp can be maintained by adopting a bending molding process, so that the buckling pressure of the elastic clamp is durable, safe and reliable, and the use requirement of the railway switch of the passenger special line is met.
Description
Technical Field
The invention relates to the technical field of railway switches for passenger transport lines, in particular to a manufacturing method of an elastic clamp for railway switches for passenger transport lines and the elastic clamp manufactured by the same.
Background
In the related art, the railway speed-up passenger special line turnout adopts a plurality of buckling modes of the inner side of a stock rail, mainly including a mode of a spring plate and a pin, and a wedge-shaped adjusting spring plate is adopted for buckling. However, when the spring plate pin is adopted for buckling, the rear end of the spring plate is limited by the height difference of the stock rail and the AT rail, and the spring plate is easy to deform too much to cause insufficient strength of the spring plate and the pin, and even damage and breakage occur. The wedge-shaped adjusting type elastic sheet buckling is adopted, the elastic sheet and pin breakage problem caused by the elastic sheet pin buckling mode can be avoided, the buckling is durable, safety and reliability are realized, the added wedge-shaped block and the locking structure thereof enable installation and maintenance to be complicated, and the installation mode that the large hammer beats the wedge-shaped block to raise the elastic sheet can cause certain damage to the wedge-shaped block. Because of the operation characteristics of high smoothness, high safety and low maintenance workload of the turnout of the passenger special line, the spring plate-pin type wedge-shaped adjusting spring plate is difficult to meet the use requirement.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present invention is to provide a method for manufacturing an elastic clip for a switch of a passenger dedicated line, which has a simple process, is convenient to operate, and can ensure that the manufactured elastic clip has a precise size and a stable and reliable buckling force.
Another object of the present invention is to propose a spring clip made according to the above manufacturing method.
A method of manufacturing a spring clip for a passenger dedicated line switch according to the first aspect of the present invention includes the steps of: performing one-time bending on the cylindrical blanking piece to obtain a to-be-pressed piece which is approximately V-shaped; stamping the to-be-pressed piece along the direction perpendicular to the plane where the to-be-pressed piece is located so as to obtain a stamping piece; and (3) performing secondary bending on the stamping part at the outer side of the stamping part adjacent to the two free ends of the stamping part to obtain the elastic clamp, wherein the distance between the two ends of the elastic clamp is firstly reduced and then increased along the extending direction of the elastic clamp.
According to the manufacturing method of the elastic clamp for the railway switch of the passenger special line, disclosed by the invention, the size of the elastic clamp can be more accurate and the continuity of metal fibers of the elastic clamp can be maintained by adopting a bending molding process, so that the buckling pressure of the elastic clamp is durable, safe and reliable, and the use requirement of the railway switch of the passenger special line is met.
In addition, the method for manufacturing the elastic clip for the turnout of the passenger special line according to the invention can further comprise the following steps:
according to some embodiments of the invention, before the blanking member is subjected to one-time bending, the method further comprises: and heating the middle part of the blanking piece, wherein the bending part of the to-be-pressed piece is positioned at the middle part of the blanking piece.
Specifically, the heating length of the middle part of the blanking member is L, and L satisfies: l is more than or equal to 150mm and less than or equal to 200mm, the heating temperature is T, and the T satisfies the following conditions: t is more than or equal to 800 ℃ and less than or equal to 850 ℃.
Further, the heat treatment method for the workpiece after the secondary bending is carried out, and comprises the following steps: at a first temperature T 1 Preheating the workpiece; the preheated workpiece is heated at a second temperature T 2 Heating down; oil cooling is carried out on the heated workpiece; the workpiece after oil cooling is at a third temperature T 3 And (5) lower tempering.
According to some embodiments of the invention, after the heat treatment, further comprising: and carrying out surface corrosion prevention treatment on the heat-treated workpiece to obtain the elastic clamp.
Specifically, the first temperature T 1 The method meets the following conditions: t at 600℃ or less 1 The temperature is less than or equal to 650 ℃, and the second temperature T 2 The method meets the following conditions: t at 860 DEG C 2 Not more than 880 ℃, the third temperature T 3 The method meets the following conditions: t at 490 DEG C 3 ≤500℃。
According to some embodiments of the invention, before the secondary bending of the stamping part, the method further comprises: and cutting off the flash of the stamping part.
The spring clip manufactured by the manufacturing method of the spring clip for the turnout of the passenger special line according to the second aspect of the invention comprises the following steps: a generally U-shaped head; the two waists are respectively connected with the two free ends of the head, and gradually approach to the direction away from the head; and the two tail parts are respectively connected with the free ends of the two waists, and the two tail parts are gradually far away from the head part towards the direction far away from the head part.
Specifically, the included angle between the two tail parts is alpha, and the alpha satisfies the following conditions: alpha is more than or equal to 29 degrees and less than or equal to 32 degrees.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a blanking piece of a method of manufacturing a spring clip for a passenger dedicated line switch in accordance with an embodiment of the present invention;
FIG. 2 is a blank member obtained by performing a single press bending of the blanking member shown in FIG. 1;
FIG. 3 is a stamping of the blank shown in FIG. 2;
FIG. 4 is a cut-away flash stamping resulting from the cutting away of flash from the stamping shown in FIG. 3;
FIG. 5 is a schematic illustration of a secondary bending of the flash-removed stamping shown in FIG. 4;
FIG. 6 is a top view of a spring clip made by the method of making a spring clip for a passenger dedicated line switch in accordance with an embodiment of the present invention;
fig. 7 is a front view of the spring clip for the passenger dedicated line switch shown in fig. 6.
Reference numerals:
the resilient clip 100 is provided with a resilient clip,
a head part 1, a waist part 2, a tail part 3, a bending die 4,
blanking part 10, pressing part 20, pressing part 30 and pressing part 40 after trimming.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "inner," "outer," and the like indicate an orientation or a positional relationship based on that shown in the drawings, merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is less level than the second feature.
A method of manufacturing a spring clip 100 for a passenger dedicated line switch according to an embodiment of the present invention is described below with reference to fig. 1-7. The spring clip 100 may be used on a passenger train crossing, but is not limited thereto.
Referring to fig. 1-5, a method of manufacturing a spring clip 100 for a passenger dedicated line switch according to a first aspect of the present invention includes the steps of:
the cylindrical blanking member 10 is subjected to one-time bending to obtain a to-be-pressed member 20 (shown in fig. 2) having a substantially V-shape, wherein the blanking member 10 may be round steel such as hot rolled spring steel, etc., but is not limited thereto;
stamping the to-be-stamped piece 20 in a direction perpendicular to a plane in which the to-be-stamped piece 20 is located to obtain a stamped piece 30 (as shown in fig. 3), for example, the to-be-stamped piece 20 may be subjected to one-time stamping forming in cooperation with a stamping die;
the stamping 30 is double-bent on the outside of the stamping 30 adjacent to its two free ends (e.g., right end in fig. 5) to obtain the spring clip 100, wherein the distance between the two ends (e.g., upper and lower ends in fig. 5) of the spring clip 100 decreases and increases in the direction in which it extends. For example, referring to fig. 5 in combination with fig. 6, the bending die 4 may be placed at the right end of the stamping part 30 adjacent to the stamping part 30, and the bending die 4 includes two bending portions respectively located at one sides (i.e., outer sides) of the two free ends of the stamping part 30, which are far away from the centers of the two free ends, and the two bending portions gradually approach to each other to bend the stamping part 30, where the distance between the upper and lower ends of the elastic clip 100 is decreased and increased in the left-to-right direction. Thus, the clip 100 can be made to have a large holding pressure, be safe and reliable, and be easily installed.
For example, referring to fig. 1 and fig. 2, in the manufacturing process, the blanking member 10 such as round steel may be first subjected to a first bending operation to obtain a to-be-pressed member 20 having a substantially V shape, then the to-be-pressed member 20 is pressed by using a pressing die in a direction perpendicular to a plane in which the to-be-pressed member 20 is located, so as to obtain a pressing member 30, and then the pressing member 30 is subjected to a second bending operation on an outer side of the pressing member 30 adjacent to a right end thereof, so as to obtain the elastic clip 100. Therefore, the dimensional accuracy of the elastic clamp 100 can be ensured by adopting the bending forming process, the condition that the thickness of the decarburized layer on the surface of the elastic clamp 100 exceeds the requirement of the related standard due to excessive heating times is avoided, and meanwhile, the continuity of the metal fiber tissue of the elastic clamp 100 can be maintained, so that the stable and reliable buckling pressure provided by the elastic clamp 100 can be ensured.
According to the manufacturing method of the elastic clamp 100 for the passenger special line turnout, disclosed by the embodiment of the invention, the size of the elastic clamp 100 can be more accurate and the continuity of metal fibers of the elastic clamp 100 can be maintained by adopting a bending molding process, so that the buckling force of the elastic clamp 100 is durable, safe and reliable, and the use requirement of the passenger special line turnout is met.
According to some embodiments of the present invention, before the blanking member 10 is subjected to one bending, the method further comprises: the middle part of the blanking member 10 is heated, wherein the bent part of the to-be-pressed member 20 is located in the middle part of the blanking member 10. For example, referring to fig. 1 in combination with fig. 2, after the middle portion of the blanking member 10 is heated, the blanking member 10 is subjected to a single press bending. Specifically, the heating length of the middle part of the blanking member 10 is L, which satisfies: l is more than or equal to 150mm and less than or equal to 200mm, the heating temperature is T, and T meets the following conditions: t is more than or equal to 800 ℃ and less than or equal to 850 ℃. The specific values of the heating length L and the heating temperature T can be adjusted according to actual requirements. For example, the heating length L may further satisfy: l=180 mm, the heating temperature T may further satisfy: t=820℃. Therefore, the blanking member 10 is convenient to be bent, the blanking member 10 can be fully utilized, and the material cost is saved.
Further, the method of manufacturing the spring clip 100 for a passenger dedicated line switch further includes the steps of: and performing heat treatment on the workpiece subjected to the secondary bending. Wherein, the heat treatment method comprises the following steps: at a first temperature T 1 Preheating a workpiece; the preheated workpiece is at a second temperature T 2 Heating down; oil cooling is carried out on the heated workpiece; the workpiece after oil cooling is at a third temperature T 3 And (5) lower tempering.
Specifically, a first temperature T 1 The method meets the following conditions: t at 600℃ or less 1 The temperature is less than or equal to 650 ℃ and the second temperature T 2 The method meets the following conditions: t at 860 DEG C 2 The temperature is less than or equal to 880 ℃, the third temperature T 3 The method meets the following conditions: t at 490 DEG C 3 The temperature is less than or equal to 500 ℃. For example, a first temperature T 1 It is further possible to satisfy: t (T) 1 =650 ℃, second temperature T 2 It is further possible to satisfy: t (T) 3 =870 ℃, third temperature T 3 It is further possible to satisfy: t (T) 3 =500℃. Thereby making it possible toThe preheating time is prolonged, the stay time of the workpiece in a high-temperature area is shortened, the structural strength of the elastic clamp 100 is improved, and the surface decarburized layer of the elastic clamp 100 is controlled below 0.04mm, so that the elastic clamp 100 can meet the service performance requirements of special passenger lines such as high-speed special passenger line turnouts.
According to some embodiments of the invention, after the heat treatment, further comprising: the heat-treated workpiece is subjected to surface corrosion prevention treatment to obtain the elastic clamp 100. Thus, the corrosion resistance of the spring clip 100 can be improved, so that the service life of the spring clip 100 can be prolonged, and the safety of the railway switch of the passenger dedicated line can be improved.
According to some embodiments of the present invention, prior to the secondary bending of the stamping 30, the method further comprises: the flash of stamping 30 is cut away. For example, the flash of stamping 30 can be removed using a press, wherein the flash removed stamping 40 is shown in FIG. 4. Therefore, the edge of the stamping part 30 is smoother, the whole line is smoother, and the stamping part 30 is convenient to be subjected to secondary bending treatment.
A specific embodiment of a method of manufacturing a spring clip 100 for a passenger dedicated line switch in accordance with an embodiment of the present invention is described below with reference to fig. 1-5.
A method for manufacturing a spring clip 100 for a passenger dedicated line switch according to an embodiment of the present invention includes the steps of:
to the middle part heating of cylindrical blanking member 10, heating length L satisfies: l=180 mm, heating temperature T satisfies: t=8200 ℃;
the heated cylindrical blanking member 10 is matched with a die to be subjected to one-time bending to obtain a to-be-pressed member 20 which is approximately V-shaped;
carrying out one-time stamping forming on the to-be-pressed piece 20 by matching with a stamping die along the direction perpendicular to the plane of the to-be-pressed piece 20 so as to obtain a stamping part 30;
cutting off the flash of the stamping part 30 by a press;
performing secondary bending forming on the stamping part 40 subjected to trimming under the action of the die;
carrying out heat treatment on the workpiece after the secondary bending forming, wherein the heat treatment method comprises the following steps of: preheating at 650 ℃; heating the preheated workpiece at 870 ℃; oil cooling is carried out on the heated workpiece; tempering the oil-cooled workpiece at 500 ℃;
the heat-treated workpiece is subjected to surface corrosion prevention treatment to obtain the elastic clamp 100 for the turnout of the passenger special line according to the embodiment of the invention. Thus, the blanking member 10 is subjected to forging forming, waste heat edge gnawing, heat treatment and surface corrosion prevention treatment, and then the elastic clamp 100 can be manufactured.
According to the manufacturing method of the elastic clip 100 for the turnout of the passenger dedicated line, the molding process of the elastic clip 100 mainly comprises three stages: the first stage is to heat the blanking member 10, such as a round steel workpiece, and then to perform U-shaped bending; the second stage is to match the stamping die for one-step stamping forming, and carry out waste heat trimming by utilizing a press; the third stage is the secondary bending forming. Therefore, by adopting the process of three times of heating forming, the dimensional accuracy of the elastic clamp 100 can be ensured, the condition that the thickness of the decarburized layer on the surface of the elastic clamp 100 exceeds the requirement of the related standard due to excessive heating times is avoided, and meanwhile, the continuity of the metal fiber tissue of the elastic clamp 100 can be maintained, so that the stable and reliable buckling pressure of the inner side of the stock rail provided by the elastic clamp 100 can be ensured.
A spring clip 100 manufactured by a method of manufacturing a spring clip 100 for a passenger dedicated line switch according to a second aspect of the present invention includes: a generally U-shaped head portion 1, two waist portions 2 and two tail portions 3.
Specifically, as shown in fig. 6, the two waists 2 are respectively connected to two free ends (e.g., right ends in fig. 6) of the head 1, and the two waists 2 gradually approach in a direction away from the head 1. The two tail portions 3 are respectively connected to the free ends (e.g., right ends in fig. 6) of the two waist portions 2, and the two tail portions 3 are gradually distant in a direction away from the head portion 1.
For example, in the example of fig. 6, the elastic clip 100 is substantially in the shape of an "oc" as a whole, the head portion 1 of the elastic clip 100 is substantially in the shape of a U, the left ends of the two waist portions 2 are connected to the two open ends of the head portion 1, respectively, and the two waist portions 2 gradually approach in the left-to-right direction. The left ends of the two tail portions 3 are respectively connected with the right ends of the corresponding waist portions 2, and the two tail portions 3 are gradually far away in the left-to-right direction. Wherein the two tail portions 3 of the elastic clip 100 may be formed in an arc shape or the like, but is not limited thereto.
During installation, the head 1 of the clip 100 can be clamped to the bottom corner of a rail, such as a stock rail (not shown), the two tail 3 of the clip 100 can be pried off by a prying tool and lifted to fall into an installation device, such as a pretensioning device (not shown), at which time the pretensioning device applies a pre-compression force parallel to the clamping force of the head 1 of the clip 100 to the tail 3 of the clip 100 (i.e., the two tail 3), and the pre-compression force takes the position where the pre-tension device supports the waist 2 of the clip 100 as a fulcrum, and a pressing force is formed on the head 1 of the clip 100 based on the lever principle, so as to clamp the stock rail. Simple structure, simple to operate and withhold the pressure big, safe and reliable.
According to some embodiments of the invention, referring to fig. 6, the angle α between the two tails 3 is α, which satisfies: alpha is more than or equal to 29 degrees and less than or equal to 32 degrees. For example, referring to fig. 6, the angle α is the angle between the extension lines of the outer edges of the free ends (i.e., the right ends in fig. 6) of the two tail portions 3. The specific numerical values can be adaptively adjusted according to actual requirements, for example, alpha can further satisfy the following conditions: α=31.5°, etc. Thus, the mounting is facilitated and the elastic clip 100 is not easily dropped to the support of the mounting device in the operating state to fail.
According to some embodiments of the invention, referring to fig. 7, the spring clip 100 has a length a, which satisfies: a is more than or equal to 302mm and less than or equal to 305mm. For example, a may further satisfy: a=303 mm, etc. Thus, the spring clip 100 can be adapted to mate with the stock rail, so that the position of the spring clip 100 can be stabilized, and the overall performance of the spring clip 100 can be improved.
Specifically, both free ends (e.g., left ends in fig. 7) of the head 1 of the clip 100 have a slope B, which satisfies: 1: b is more than or equal to 20 and less than or equal to 1:17.6. for example, slope B may further satisfy: b=1: 17.6. each tail 3 has a slope C, which satisfies: 1: c is more than or equal to 22 and less than or equal to 1:18. for example, the slope C may further satisfy c=1: 18.
for example, referring to fig. 7, the thickness of the head portion 1 of the clip 100 gradually decreases in a direction away from the two waist portions 2 (e.g., a direction from right to left in fig. 7), and the thickness of the tail portion 3 of the clip 100 gradually decreases in a direction away from the waist portions 2 (e.g., a direction from left to right in fig. 7). Wherein the thickness D of one end of the head 1 remote from the two free ends of the head 1 (e.g., the left end in fig. 7) is such that the thickness D satisfies: d is more than or equal to 8.5mm and less than or equal to 9.5mm, wherein the thickness D preferably further satisfies: d=9 mm. The thickness of the waist portion 2 of the spring clip 100 is E, wherein the thickness E satisfies: e is more than or equal to 13.5mm and less than or equal to 15.5mm. Alternatively, the thickness E may further satisfy: 14 mm.ltoreq.E.ltoreq.15 mm, e.g.E=14.7 mm, E=14.5 m etc. Therefore, the thicknesses of different positions of the elastic clamp 100 are set according to different stress conditions of each part of the elastic clamp 100, and the positions of stress supporting points of the elastic clamp 100 are adjusted, so that the buckling pressure of the elastic clamp 100 can be increased, the stress is reduced, the stress state of the elastic clamp 100 is good, the work is stable, and the use requirement of a passenger special line turnout is met.
It is understood that the thickness of the waist portion 2 of the elastic clip 100 and the length of the elastic clip 100 can be adjusted and designed according to the specific specification and model of the elastic clip 100, which is not particularly limited in the present invention.
According to some embodiments of the invention, referring to fig. 6, the spacing between the outer edges of the free ends of the two tails 3 is H, which satisfies: h is more than or equal to 71mm and less than or equal to 73mm. Wherein, H preferably further satisfies: h=73 mm, thereby facilitating installation and making the clip 100 less prone to fall off the support table of the installation device in an operating state to fail.
Alternatively, the thickness of each tail portion 3 gradually decreases from the inner edge of the tail portion 3 toward the outer edge of the tail portion 3. Thereby, the mounting tool is facilitated to clamp the outer edge of the tail portion 3, thereby further reducing the difficulty of mounting the spring clip 100.
Specifically, referring to fig. 6 and 7, the overall structure of the elastic clip 100 is generally in the shape of "oc", the middle is thick, the head portion 1 and the tail portion 3 are gradually thinned toward the direction away from the waist portion 2, the two tail portions 3 are opened at a constant included angle, and the edges of the two tail portions 3 are thinned to a minimum thickness in an arc shape from the inside to the outside.
According to the elastic clamp 100 manufactured by the manufacturing method of the elastic clamp 100 for the turnout of the passenger dedicated line, the key positions such as the head part 1 and the tail part 3 are accurate in size, the continuity of metal fibers of the elastic clamp 100 can be maintained, and the thickness of a decarburized layer on the surface of the elastic clamp 100 is reduced, so that the buckling pressure of the elastic clamp 100 is durable, safe and reliable, and the use requirement of the turnout of the passenger dedicated line is met.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (5)
1. A method of manufacturing a spring clip for a passenger dedicated line switch, comprising the steps of:
performing one-time bending on the cylindrical blanking piece to obtain a to-be-pressed piece which is approximately V-shaped;
stamping the to-be-pressed piece along the direction perpendicular to the plane where the to-be-pressed piece is located so as to obtain a stamping piece;
performing secondary bending on the stamping part at the outer side of the stamping part adjacent to the two free ends of the stamping part to obtain the elastic clamp, wherein the distance between the two ends of the elastic clamp is firstly reduced and then increased along the extending direction of the elastic clamp;
before carrying out one time bending machine to the unloading piece, still include: heating the middle part of the blanking piece, wherein the bending part of the to-be-pressed piece is positioned at the middle part of the blanking piece;
the heating length of the middle part of the blanking piece is L, and L satisfies: l is more than or equal to 150mm and less than or equal to 200mm, the heating temperature is T, and the T satisfies the following conditions: t is more than or equal to 800 ℃ and less than or equal to 850 ℃;
carrying out heat treatment on the workpiece after the secondary bending, wherein the heat treatment method comprises the following steps of: at a first temperature T 1 Preheating the workpiece; the preheated workpiece is heated at a second temperature T 2 Heating down; oil cooling is carried out on the heated workpiece; the workpiece after oil cooling is at a third temperature T 3 Lower tempering;
the first temperature T 1 The method meets the following conditions: t at 600℃ or less 1 The temperature is less than or equal to 650 ℃, and the second temperature T 2 The method meets the following conditions: t at 860 DEG C 2 Not more than 880 ℃, the third temperature T 3 The method meets the following conditions: t at 490 DEG C 3 ≤500℃。
2. The method of manufacturing a spring clip for a passenger dedicated line switch as set forth in claim 1, further comprising, after said heat treating:
and carrying out surface corrosion prevention treatment on the heat-treated workpiece to obtain the elastic clamp.
3. The method of manufacturing a spring clip for a passenger dedicated line switch of claim 1, further comprising, prior to the secondary bending of the stamping:
and cutting off the flash of the stamping part.
4. A clip made by the method of making a clip for a passenger line switch as claimed in any one of claims 1-3, comprising:
a generally U-shaped head;
the two waists are respectively connected with the two free ends of the head, and gradually approach to the direction away from the head; and
the two tail parts are respectively connected with the free ends of the two waist parts, and the two tail parts are gradually far away from the head part in the direction away from the head part.
5. The spring clip of claim 4 wherein the angle between the two tails is α, the α satisfying: alpha is more than or equal to 29 degrees and less than or equal to 32 degrees.
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| CN112808864B (en) * | 2020-12-21 | 2023-04-07 | 中铁隆昌铁路器材有限公司 | Forming tool die of elastic clamp for track turnout |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1847524A (en) * | 2006-03-10 | 2006-10-18 | 中铁宝桥股份有限公司 | Adjustable wedged spring leaf type buckle and its fastening method |
| RU2007136637A (en) * | 2007-03-11 | 2009-04-10 | Владимир Владимирович Кобелев (RU) | SYSTEM FOR FASTENING RAILS TO A RIGID BASE USING AN ELASTIC ELEMENT MADE FROM A STEEL PLATE OR A STRIP MATERIAL |
| CN101811154A (en) * | 2009-02-19 | 2010-08-25 | 中国石油天然气管道局 | Method for producing hot-bending elbow |
| CN101970758A (en) * | 2007-11-15 | 2011-02-09 | 托米斯拉夫·德贝利亚克 | Fastening of rails on sleepers by resilient clips |
| CN202202213U (en) * | 2011-08-25 | 2012-04-25 | 中国铁道科学研究院铁道建筑研究所 | Elastic clip for heavy-duty track switch |
| CN104138942A (en) * | 2014-07-29 | 2014-11-12 | 中国化学工程第三建设有限公司 | Method for manufacturing large bent steel members on basis of fire bending |
| CN204325817U (en) * | 2014-12-12 | 2015-05-13 | 中原利达铁路轨道技术发展有限公司 | A kind of Fast Installation rail fastener system |
| CN105755239A (en) * | 2014-12-17 | 2016-07-13 | 中国石油天然气集团公司 | Method for improving low-temperature impact toughness of large-diameter large-wall-thickness high-strength hot-bent pipe |
-
2016
- 2016-08-12 CN CN201610671507.9A patent/CN107724191B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1847524A (en) * | 2006-03-10 | 2006-10-18 | 中铁宝桥股份有限公司 | Adjustable wedged spring leaf type buckle and its fastening method |
| RU2007136637A (en) * | 2007-03-11 | 2009-04-10 | Владимир Владимирович Кобелев (RU) | SYSTEM FOR FASTENING RAILS TO A RIGID BASE USING AN ELASTIC ELEMENT MADE FROM A STEEL PLATE OR A STRIP MATERIAL |
| CN101970758A (en) * | 2007-11-15 | 2011-02-09 | 托米斯拉夫·德贝利亚克 | Fastening of rails on sleepers by resilient clips |
| CN101811154A (en) * | 2009-02-19 | 2010-08-25 | 中国石油天然气管道局 | Method for producing hot-bending elbow |
| CN202202213U (en) * | 2011-08-25 | 2012-04-25 | 中国铁道科学研究院铁道建筑研究所 | Elastic clip for heavy-duty track switch |
| CN104138942A (en) * | 2014-07-29 | 2014-11-12 | 中国化学工程第三建设有限公司 | Method for manufacturing large bent steel members on basis of fire bending |
| CN204325817U (en) * | 2014-12-12 | 2015-05-13 | 中原利达铁路轨道技术发展有限公司 | A kind of Fast Installation rail fastener system |
| CN105755239A (en) * | 2014-12-17 | 2016-07-13 | 中国石油天然气集团公司 | Method for improving low-temperature impact toughness of large-diameter large-wall-thickness high-strength hot-bent pipe |
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