CN209671398U - Magnetic-levitation train and its forging pull rod - Google Patents

Abstract

The utility model provides a kind of magnetic-levitation train and its forging pull rod, solid forging form, more stable reliable each to all having higher bending stiffness.The forging pull rod includes shaft and the end in the shaft both ends, and the end and the shaft solid forging form, and the cross section of the shaft is in H-type, and the end is equipped with mounting hole, and axis direction locating for the transverse part of H-type of the mounting hole extends.With in the prior art by shaft compared with the form that end is welded as a whole, solid forging, can be to avoid the problem because of fatigue reliability difference caused by weld seam there is no weld seam；The cross section of shaft is in H-type, improves bending stiffness of the shaft on vertical, can also achieve the purpose that improve the bending stiffness of shaft horizontally, to forge pull rod with stronger stability by increasing the height of two vertical parts of H-type on vertical；It can be applied to the use environment for being transversely mounted limited space, preferably meet the use demand of magnetic-levitation train.

Description

Magnetic-levitation train and its forging pull rod

Technical field

The utility model relates to magnetic-levitation train technical fields, more particularly to magnetic-levitation train and its forging pull rod.

Background technique

Tiebar structure itself bears to stretch and two kinds of load of compression, stretching carries as two power bar so-called in the mechanics of materials Major concern fatigue strength problem under lotus, and major concern strut stability problem under compressive loading.For from structure, draw Bar is made of shaft and end, and end portion is machined with circular hole, to install rubber nodal point or oscillating bearing.

The Tiebar structure used on high-speed maglev train includes drawing pull bar and brake bar, and drawing pull bar is connected to car body Between EEF bogie, brake bar is set in Breake Electromagnet.Currently, both pull rods are welding structure, i.e. shaft and end Head is all made of open die forging processing, is then linked together shaft and end by the way of welding.What this mode produced Complex process, and there are weld seams in structure, cause fatigue reliability poor.

Therefore, a kind of magnetic-levitation train and its forging pull rod how are designed, to improve the bending stiffness of pull rod, improving fatigue can It is a urgent problem by property.

Utility model content

The purpose of the utility model is to provide a kind of magnetic-levitation train and its forging pull rods, and solid forging forms, each to equal Bending stiffness with higher, it is more stable reliable.

To achieve the above object, the utility model provides a kind of forging pull rod of magnetic-levitation train, including shaft and is in The end at the shaft both ends, the end and the shaft solid forging form, and the cross section of the shaft is in H-type, described End is equipped with mounting hole, and axis direction locating for the transverse part of H-type of the mounting hole extends.

The forging pull rod of this programme, including shaft and end, shaft and end solid forging form, with general in the prior art For shaft compared with the form that end is welded as a whole, solid forging, can be to avoid because of fatigue caused by weld seam there is no weld seam The problem of poor reliability；More importantly it is rigid to improve bending resistance of the shaft on vertical since the cross section of shaft is in H-type Degree, moreover, the less-restrictive that the vertical installation space of magnetic-levitation train is subject to, it can be by increasing by two vertical parts of H-type vertical On height, achieve the purpose that improve shaft bending stiffness horizontally, so as to improve shaft it is each to bending stiffness, with Just forging pull rod has stronger stability；In addition, the forging pull rod of this programme can be applied to be transversely mounted limited space Use environment preferably meets the use demand of magnetic-levitation train.

Optionally, the mounting hole is for installing oscillating bearing or rubber nodal point.

Optionally, the shaft is vertical and horizontal than being less than or equal to 2/3.

Optionally, the transverse part of the shaft and the thickness of vertical part are respectively less than predetermined value.

Optionally, cold treatment is carried out after the shaft and the end solid forging.

Optionally, the junction of the transverse part of the shaft and vertical part is connected using chamfering.

Optionally, the top of the shaft is from top to bottom tapered U-shaped of bore, and lower part is that from top to bottom bore is cumulative Inverted U.

Optionally, the end is cylindrical, and forms the mounting hole with its barrel chamber, and the end is in the shaft Longitudinal projection be it is rectangular, the upper end of the shaft is upwards without departing from the rectangular top, and lower end is downwards without departing from the side Shape it is following.

The utility model additionally provides a kind of magnetic-levitation train, including the drawing pull bar that is installed between car body and EEF bogie with And the brake bar in Breake Electromagnet, the drawing pull bar and the brake bar are all made of above-mentioned forging pull rod.

Detailed description of the invention

Fig. 1 provides the Facad structure of the forging pull rod of magnetic-levitation train in a specific embodiment by the utility model Schematic diagram；

Fig. 2 is the top view of forging pull rod shown in Fig. 1；

Fig. 3 is the schematic diagram of the section structure in the direction A-A in Fig. 1；

Fig. 4 is the schematic diagram of the section structure in the direction B-B in Fig. 1.

In Fig. 1-Fig. 4:

Shaft -1, end -2, mounting hole -3.

Specific embodiment

Below in conjunction with attached drawing, the utility model is specifically introduced, so as to this reality of those skilled in the art's accurate understanding With novel technical solution.

It is as described herein lateral, longitudinal to forge pull rod as reference, it is vertical to forge the extending direction of shaft 1 of pull rod To with the direction that is transversely to the machine direction in horizontal plane for laterally, to be vertical perpendicular to the direction of horizontal plane.

Really as stated in the background art, pull rod in the prior art is welding structure, i.e., shaft 1 and end 2 are all made of certainly It is individually forged, is then linked together shaft 1 and end 2 by the way of welding, the complex process of this mode by forging, and There are weld seams in structure, cause fatigue reliability poor.

For this technical problem, as Figure 1-Figure 4, present solution provides a kind of forging pull rod of magnetic-levitation train (under Also abbreviation pull rod in text), the end 2 including shaft 1 and in 1 both ends of shaft, wherein end 2 and 1 solid forging of shaft and At the cross section of shaft 1 is in H-type, and end 2 is equipped with mounting hole 3, and axis direction locating for the transverse part of H-type of mounting hole 3 is prolonged It stretches.

Firstly, shaft 1 and end 2 are formed using solid forging, with shaft in the prior art in the forging pull rod of this programme 1 compares with the form welded again behind end 2 individually forging, simplifies technique, it is particularly possible to avoid generating weld seam, and then can protect Demonstrate,prove junction structural strength, prevent because weld seam there is a problem of causing fatigue reliability difference.Also, when using solid forging When, compared with first individually forging is welded again, technique is more simple, more efficient.

Second, in the prior art, the cross section of shaft 1 is mostly in " I " fonts, the axis direction of end 2 is in I-shaped Up and down two it is horizontal where direction, if using the I-shaped two horizontal cover board as shaft 1 up and down, with the axis side of end 2 To Y-direction is defined as, with the Z-direction in an I-shaped perpendicular locating direction, then since the material being distributed on cover board is more, therefore shaft 1 Y-direction bending stiffness it is larger, and the bending stiffness in Z-direction is smaller；For the stability for improving pull rod, it is necessary to improve shaft 1 In the bending stiffness of Z-direction, just need to increase the horizontal length in Y-direction of I-shaped two at this time；However, pull rod is in Y-direction in practice Size suffers from the limitation of installation space, i.e. the installation space of Y-direction is limited, can not be changed by increasing pull rod in the size of Y-direction The bending stiffness of kind Z-direction.

Third, even if there is the Tiebar structure formed using solid forging on wheel track vehicle at present, but these pull rods 1 section of shaft is " I " fonts, cover board indicated by two cross up and down of " work " word in the X perpendicular to Y-direction to extension, the X to The as forging direction of pull rod；From section, the material of this pull rod is mainly distributed on I-shaped one and erects, i.e., in sturdy " short and stout " type structure, this distribution mode are unfavorable for improving the bending stiffness of Z-direction, stability of the pull rod in the case where bearing compressive load It is poor.

The technical issues of mentioning for above-mentioned second point and thirdly, this programme are changed to H-type for 90 degree of H-shaped rotating Cross section, at this point, the cover board of shaft 1 extends in Z-direction, perpendicular to Y-direction, to obtain bigger Z-direction rigidity；Also, due to drawing The Z-direction size of bar is not limited substantially by installation space, i.e. the installation space of Z-direction is larger, will not generally be caused to the size of pull rod Limitation, therefore the bending stiffness of Y-direction can be improved by way of Z-direction size increasing pull rod, thus take into account to pull rod in Y-direction and The bending stiffness demand of Z-direction, and then improve the stability of entire pull rod.

As depicted in figs. 1 and 2, the mounting hole 3 set on end 2 can be used for installing oscillating bearing or rubber nodal point, specifically Accordingly it is arranged according to the needs of magnetic-levitation train.

As shown in figure 3, being so that shaft 1 can increase shaft 1 in Z-direction with better Z-direction bending stiffness as much as possible Size, such as increase H-type shaft 1 two vertical parts Z-direction height so that shaft 1 it is vertical and horizontal than be less than or equal to 2/3, i.e., cross The ratio of portion and vertical part is less than or equal to 2/3, forms the shaft 1 of " tall and thin " type.

Meanwhile the transverse part of shaft 1 and the thickness of vertical part are respectively less than predetermined value, which can be 3mm, to form thin-walled Structure reduces the weight and thickness of pull rod, realizes light-weight design.At this point, can be very good simultaneous due to using H-type cross section Bending stiffness is cared for, will not influence the stability of pull rod while loss of weight.

To guarantee to process intensity, after 2 solid forging of shaft 1 and end, also progress cold treatment is improved rigid with eliminating stress Degree.

As shown in figure 3, the transverse part of shaft 1 and the junction of vertical part can be connected using chamfering, chamfering interconnecting piece is formed, with The overall stiffness for improving shaft 1 is avoided generating stress concentration in the junction of transverse part and vertical part, and then is prevented in transverse part and vertical part Junction be broken.

Further, the top of shaft 1 can be tapered U-shaped of bore from top to bottom, and lower part can be mouth from top to bottom The cumulative inverted U of diameter；The inverted U of the U-shaped and lower part on top can be about the transverse part setting symmetrical above and below of H-type.Described herein Bore refers to, the size of the inner wall of the opposite vertical part of lateral dimension, in particular to two between two opposite vertical parts in Y-direction.

Also, the gradual change of this bore can be the gradual change being of a straight line type, and be also possible to the gradual change of shaped form, such as with sine Or the curves such as cosine function carry out gradual change, those skilled in the art can accordingly be set according to the specific needs to shaft 1 It sets.

In conjunction with Fig. 1 and Fig. 4, the end 2 for forging pull rod can be cylindrical, and the part which is in Y-direction both ends is formed Open-ended, the barrel chamber along Y-direction perforation forms above-mentioned mounting hole 3, for installing oscillating bearing or rubber nodal point.Such as Fig. 4 institute Show, the end 2 in longitudinal projection of shaft 1 be it is rectangular, this is rectangular accordingly to have a top and one is following, shaft 1 Upper end upwards without departing from rectangular top, lower end is following without departing from rectangular downwards.Since end 2 is cylindrical, therefore end 2 Longitudinal projection be it is substantially square, this it is rectangular include rectangle and square；The outer diameter of the cylinder locating for the end 2 is in Y-direction When being varied, the longitudinal projection of end 2 presented it is rectangular be not just regular rectangular, the rectangular bottom and upper segment It is possible to not instead of straight line, curve, such as camber line；But regardless of there are which kind of variation, shafts for rectangular bottom and upper segment The range that 1 top and bottom are extended without departing from end 2 in above-below direction.

In addition, the utility model additionally provides a kind of magnetic-levitation train, including the traction being installed between car body and EEF bogie Pull rod, and the brake bar in Breake Electromagnet, the drawing pull bar and brake bar can use above-mentioned forging Pull rod is preferably applied for magnetic-levitation train to obtain higher stability.

Since the component that magnetic-levitation train includes is more, the structure of each component is more numerous and jumbled, and drawing pull bar and brake bar Application it is wider, herein no longer to magnetic-levitation train carry out in detail, also not in conjunction with the use environment of drawing pull bar and brake bar It is specifically described, has only carried out example introduction with regard to forging the structure of pull rod, other unknown places please refer to the prior art.

Magnetic-levitation train provided to the utility model and its forging pull rod are described in detail above.It is used herein Specific case is expounded the principles of the present invention and embodiment, and the explanation of above example is only intended to help to manage Solve the core concept of the utility model.It should be pointed out that for those skilled in the art, not departing from this reality Under the premise of with new principle, several improvements and modifications can be made to this utility model, these improvement and modification are also fallen into In the protection scope of the utility model claims.

Claims (9)

1. the forging pull rod of magnetic-levitation train, which is characterized in that including shaft (1) and in the end at the shaft (1) both ends (2), the end (2) and the shaft (1) solid forging form, and the cross section of the shaft (1) is in H-type, the end (2) Equipped with mounting hole (3), axis direction locating for the transverse part of H-type of the mounting hole (3) extends.

2. forging pull rod as described in claim 1, which is characterized in that the mounting hole (3) is for installing oscillating bearing or rubber Glue node.

3. forging pull rod as described in claim 1, which is characterized in that the vertical and horizontal ratio of the shaft (1) is less than or equal to 2/3.

4. forging pull rod as described in claim 1, which is characterized in that the transverse part of the shaft (1) and the thickness of vertical part are small In predetermined value.

5. forging pull rod as described in claim 1, which is characterized in that after the shaft (1) and the end (2) solid forging Carry out cold treatment.

6. forging pull rod as described in any one in claim 1-5, which is characterized in that the transverse part of the shaft (1) and vertical part Junction is connected using chamfering.

7. forging pull rod as claimed in claim 6, which is characterized in that the top of the shaft (1) is that from top to bottom bore is gradually That contracts is U-shaped, and lower part is the inverted U that from top to bottom bore is cumulative.

8. forging pull rod as described in any one in claim 1-5, which is characterized in that the end (2) is cylindrical, and with it Barrel chamber is formed the mounting hole (3), and the end (2) is rectangular, the shaft (1) in longitudinal projection of the shaft (1) Upper end upwards without departing from the rectangular top, lower end is rectangular following without departing from described downwards.

9. magnetic-levitation train, the braking including the drawing pull bar being installed between car body and EEF bogie and in Breake Electromagnet Pull rod, which is characterized in that the drawing pull bar and the brake bar are all made of the described in any item forgings of the claims 1-8 Make pull rod.