CN210258030U - Low-noise pantograph head of high-speed train - Google Patents
Low-noise pantograph head of high-speed train Download PDFInfo
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- CN210258030U CN210258030U CN201921082103.1U CN201921082103U CN210258030U CN 210258030 U CN210258030 U CN 210258030U CN 201921082103 U CN201921082103 U CN 201921082103U CN 210258030 U CN210258030 U CN 210258030U
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Abstract
The utility model relates to a high-speed train pantograph bow of low noise, including carbon slide, support, upper arm pole, the carbon slide including can dismantle carbon slide shell and the carbon strip of connection, the intermediate position department of carbon slide shell be equipped with the embedded groove that is used for embedding the carbon strip, fill up between carbon strip and the embedded groove and have the metal backing plate, the shape of metal backing plate, size and the planar shape of embedded groove, size are the same, the bottom surface both ends symmetry of carbon strip be equipped with fastening bolt, the both ends of metal backing plate be equipped with the first screw of fastening bolt assorted, the bottom of embedded groove be equipped with the second screw corresponding with the fastening bolt position, the carbon strip passes through fastening bolt behind first screw, the second screw and screws up the nut and carbon slide shell fixedly. Compared with the prior art, the utility model has the advantages of it makes an uproar, practices thrift replacement cost to fall.
Description
Technical Field
The utility model belongs to the technical field of high speed train pantograph bow technical field and specifically relates to a low noise high speed train pantograph bow is related to.
Background
With the rapid development of high-speed trains in China, the high-speed trains gradually occupy the leading position in the field of medium and long-distance passenger transportation, and the advantages of large transportation volume, high speed, good comfort and the like of the high-speed trains determine that the high-speed trains become vehicles preferentially developed in various countries in the future. However, with the increase of the speed of the high-speed train for one time, the pneumatic noise generated by the train is larger and larger, and the influence on waiting in the station, station workers and residents along the line is also larger and larger. According to the existing experimental analysis, the increase speed of the wheel-rail noise along with the vehicle speed is lower than that of the aerodynamic noise, and when the running speed of the train exceeds 250km/h, the aerodynamic noise gradually exceeds the wheel-rail noise to occupy the dominant position.
The pneumatic noise of the high-speed train mainly comes from a train head, a bogie, an air-conditioning air guide sleeve and a pantograph. Other parts are in streamline design or are relatively attached to the train body, and only the pantograph is completely exposed when the train runs and is in a non-streamline shape as a whole. It is therefore most beneficial to reduce noise in the pantograph. The pantograph bow is composed of a plurality of different rods and a framework, and when air flow bypasses the rods, a trailing vortex shedding phenomenon is generated, so that strong aerodynamic noise is generated, and therefore, the most basic countermeasure is to reduce the vortex shedding phenomenon.
Many researches and researches have been carried out to high speed train pantograph pneumatic noise reduction at home and abroad, for example, in the utility model patent of CN208277865U, the method of using jet flow is proposed to reduce the noise of a pantograph chassis cavity, the feasibility and the innovation are both strong, but the noise reduction of a pantograph head part is not involved, and the contribution of the pantograph head to the pantograph noise also accounts for a great proportion. Some researchers have proposed some noise reduction schemes for the bow, for example, in the patent of invention of CN102166940A, a bionic drag reduction and noise reduction type high-speed pantograph is proposed, mainly a zigzag stripe unit body is arranged on the surface of the bracket for noise reduction, although there is a certain effect, the carbon slide plate as the main noise source is not improved; the invention patent with publication number CN108859771A provides a drag-reducing noise-reducing pantograph based on multi-coupling bionics, in which a lower arm rod, an upper arm rod, and a pantograph head are improved, and a carbon sliding plate uses structures such as a circular through hole and an annular sawtooth, so that a certain noise-reducing effect is achieved.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a pantograph head of a low-noise high-speed train for overcoming the defects of the prior art.
The purpose of the utility model can be realized through the following technical scheme:
a pantograph head of a low-noise high-speed train comprises a carbon sliding plate, a bracket and an upper arm rod, wherein the upper arm rod is arranged on a lower arm rod of the pantograph, the end part of the upper arm rod far away from the lower arm rod is provided with a bracket, the carbon sliding plate is arranged on the bracket, the carbon slide plate comprises a carbon slide plate shell and a carbon strip which are detachably connected, an embedded groove for embedding the carbon strip is arranged in the middle of the carbon slide plate shell, a metal base plate is padded between the carbon strip and the embedded groove, the shape and the size of the metal base plate are the same as the plane shape and the size of the embedded groove, fastening bolts are symmetrically arranged at two ends of the bottom surface of the carbon strip, first screw holes matched with the fastening bolts are arranged at two ends of the metal backing plate, the bottom of embedded groove be equipped with fastening bolt position corresponding second screw, the carbon strip passes through behind first screw, the second screw tightening nut and carbon slide shell is fixed through fastening bolt.
Preferably, ellipsoidal convex structures are symmetrically distributed on two sides of the carbon sliding plate shell.
Preferably, the lower surface of the carbon sliding plate shell is distributed with a ridged stripe structure, the direction of the stripe lines of the ridged stripe structure is parallel to the flow direction of the air flow, the distance between the stripes of the ridged stripe structure is consistent with the distance between the convex structures of the ellipsoidal convex structure, and the lower surface of the ridged stripe structure is uniformly distributed with the protrusions of the pinnate structure.
Preferably, the support be the I shape structure, including the bracing piece with be fixed in the bearing part of bracing piece front end and rear end, two carbon slide plate symmetries set up the both sides at the bracing piece to erect on bearing part.
Preferably, the cross section of the support rod of the bracket is of a flat elliptic structure, and the bearing parts fixed at the front end and the rear end of the support rod are of an elliptic streamline structure.
Preferably, the upper arm rod is connected with the bracket through a rotating shaft rod, and the outer surface of the rotating shaft rod is distributed with a flat streamline structure.
Preferably, the height of the protrusions of the ellipsoidal convex structures is 35mm, and the distance between adjacent convex structures is 40 mm.
Preferably, the distance between each stripe of the ridge stripe structure is 40mm, and the height of the ridge stripe structure is 3 mm.
Preferably, the support rod with the flat elliptic cross section has a major axis of 420mm and a minor axis of 25mm, and the center of the support rod is concentric with the rotating shaft.
Preferably, the bearing part of the ellipsoidal streamline structure has an equatorial radius a of 36mm, an equatorial radius b of 22.5mm and a polar radius c of 8 mm.
Compared with the prior art, the utility model has the advantages of it is following:
1. the carbon slide plate is designed into a form that the carbon slide plate shell is separated from the carbon strips, and the carbon strips are embedded into the embedded grooves of the carbon slide plate shell through the fastening bolts, so that the additional cost caused by frequent replacement of the carbon slide plate is reduced, and the carbon slide plate is convenient to disassemble and maintain;
2. the utility model discloses a novel low noise high speed train pantograph based on bionical principle has carried out bionical improved design to the bow, and the whole appearance adopts streamlined design, and the protruding combined action of ellipsoid form bulge structure, ridge stripe structure and pinnate structure is broken up into many tiny airflows in future flow to make bow afterbody form many tiny eddies, show to reduce the big whirlpool of bow afterbody and the emergence of whirlpool obscission, thereby reached the purpose of making an uproar falls;
3. the utility model fully considers the pantograph-catenary contact relation of the pantograph, the upper surface of the carbon strip in contact with the contact net is the same as the upper surface of the common carbon sliding plate, the current collection state of the pantograph is not influenced, and the feasibility is strong;
4. the carbon slide plate adopts a symmetrical design mode, so that the pneumatic characteristics of pantograph heads are basically the same when the carbon slide plate runs in the forward and reverse directions, the bidirectional running characteristic of a high-speed train cannot be influenced, and the carbon slide plate can be well suitable for the bidirectional running condition of the high-speed train.
Drawings
Fig. 1 is a partially enlarged view of a pantograph head of the pantograph according to the present invention;
FIG. 2 is a schematic top view of the middle carbon slide plate according to the present invention;
FIG. 3 is a schematic side view of the middle carbon slide housing according to the present invention;
FIG. 4 is a schematic view of the plane G-G of section I in FIG. 3;
FIG. 5 is a schematic view of section I of FIG. 3 taken along plane F-F;
FIG. 6 is a schematic view of the installation of the carbon strips of the present invention;
FIG. 7 is a schematic cross-sectional view of the installation of the carbon strip of the present invention;
fig. 8 is a schematic structural view of the upper boom of the present invention;
fig. 9 is a schematic structural view of the bracket of the present invention;
the reference numbers in the figures indicate:
1. support, 2, carbon slide, 3, go up armed lever, 4, fastening bolt, 5, first screw, 6, pivot pole, 7, nut, 11, bracing piece, 12, bearing part, 21, carbon slide shell, 22, carbon strip, 23, metal backing plate, 24, embedded groove, 211, ellipsoid form protruding structure, 212, ridge stripe structure, 213, feather form structure are protruding, 31, flat streamline structure.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.
As shown in fig. 1, the utility model relates to a pantograph head of a low-noise high-speed train, which is arranged at the top of a pantograph and mainly comprises a carbon sliding plate 2, a bracket 1 and an upper arm rod 3. The upper arm rod 3 is arranged on a lower arm rod of the pantograph, the end part, far away from the lower arm rod, of the upper arm rod 3 is provided with the support 1, the support 1 is of an I-shaped structure, the support 1 is provided with the two carbon sliding plates 2, and the two carbon sliding plates 2 are symmetrically arranged on two sides of the support 1 of the I-shaped structure.
As shown in fig. 2, the carbon skid 2 is composed of a carbon skid housing 21 and a carbon rod 22, which are separate structural forms. An embedding groove 24 for embedding the carbon strip 22 is arranged at the middle position of the carbon slide plate shell 21. The carbon slide shell 21 is in both sides symmetry distribution ellipsoid shape protruding structure 211, and the protruding height of ellipsoid shape protruding structure 211 is about 35mm, and adjacent protruding structure interval is 40 mm. The ellipsoidal convex structure 211 can generate a small-scale vortex, induce the generation of a flow-direction vortex, improve the momentum and energy exchange in the boundary layer of the carbon sliding plate 2, inhibit the separation of the boundary layer, and improve the aerodynamic stability of the carbon sliding plate.
As shown in fig. 3, the ridge stripe structure 212 is distributed on the whole lower surface of the carbon slide plate shell 21, the direction of stripe lines is parallel to the flow direction of the air flow, the distance between each stripe of the ridge stripe structure 212 is 40mm, the height of the ridge stripe structure 212 is 3mm, and the ridge stripe structure 212 can play a role of rectification and restrain the large-scale transverse fluctuation of the air flow.
As shown in fig. 4 and 5, the lower surface of the ridge stripe structure 212 is uniformly distributed with the feather-like structure protrusions 213, and the single feather-like structure protrusion 213 is very fine, and this fine feather-like structure protrusion 213 can absorb high-frequency noise, and chops the air flow of the lower surface of the carbon slide plate housing 21, so that many fine horseshoe-shaped vortices are formed at the tail of the carbon slide plate housing 21, promoting the mixing of the wake, suppressing the generation of large vortices, and thereby achieving noise reduction.
As shown in fig. 6, a metal shim plate 23 is padded between the carbon rod 22 and the insertion groove 24 of the carbon slide plate housing 21, and the protruding height of the carbon rod 22 is controlled by replacing the metal shim plate 23 with different thickness. Four fastening bolts 4 are symmetrically arranged at two ends of the bottom surface of the carbon strip 22, and the protruding height of the carbon strip 22 in the embedded groove 24 is freely adjusted by adding metal backing plates 23 with different thicknesses according to the abrasion loss. The shape and size of the metal shim plate 23 are the same as the planar shape and size of the insertion groove 24, and first screw holes 5 are provided at positions corresponding to the fastening bolts 4 of the carbon rod 22 at both ends of the metal shim plate 23. The bottom of embedded groove 24 is equipped with the second screw, and it is fixed with carbon slide shell 21 to screw up the nut behind the first screw 5, the second screw that carbon strip 22 passes through fastening bolt 4 to wearing and tearing can continue to use through adjustment protrusion height under the condition of certain thickness at carbon strip 22, change again when carbon strip 22 appears big carbon caking, crack or surplus carbon strip height and only remain 5 mm.
As shown in FIG. 8, the upper arm rod 3 is connected with the bracket 1 through the rotating shaft rod 6, and the outer surface of the rotating shaft rod 6 is distributed with a flat streamline structure 31, so that the air flow disturbance to the middle transition section of the front carbon sliding plate 2 and the rear carbon sliding plate 2 is reduced.
As shown in fig. 9, the support 1 is an i-shaped structure, and includes a support rod 11 and a bearing portion 12 fixed at the front end and the rear end of the support rod 11, and two carbon sliding plates 2 are symmetrically disposed at two sides of the support rod 11 and are erected on the bearing portion 12. The section of the support bar 11 is a flat elliptic structure, and the bearing parts 12 fixed at the front end and the rear end of the support bar 11 are elliptic streamline structures. The integrated streamline structure reduces the generation of cylindrical streaming and other turbulent phenomena, and further reduces the influence on the airflow around the carbon sliding plate.
The utility model discloses based on bionical principle, carried out bionical improvement design to the bow of high-speed train pantograph, the air current flows through the ellipsoidal form protruding structure of carbon slide shell front end, it is protruding with the feather form structure rather than the surface through the ridge stripe structure of lower surface again, be minced into many tiny air currents, the ellipsoidal form protruding structure of afterbody flows through at last, thereby the production of big whirlpool and the emergence of whirlpool obscission phenomenon have been suppressed, wherein the flat ellipsoidal form structure and the ellipsoidal form streamline structure of the flat streamline structure of upper arm pole and support have all played the effect of the smooth-going air current of transition. The carbon slide plate is designed into a form that the carbon slide plate shell is added with the carbon strips, so that the additional cost caused by frequent replacement of the carbon slide plate is reduced, and the carbon slide plate adopts a symmetrical design mode, so that the carbon slide plate can be well adapted to the condition of bidirectional running of a high-speed train.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a low noise high speed train pantograph bow, includes carbon slide (2), support (1), goes up armed lever (3), last armed lever (3) set up on the lower armed lever of pantograph, last armed lever (3) keep away from tip installing support (1) of lower armed lever, carbon slide (2) locate on support (1), its characterized in that, carbon slide (2) including can dismantle carbon slide shell (21) and carbon strip (22) of connection, the intermediate position department of carbon slide shell (21) be equipped with embedded groove (24) that are used for embedding carbon strip (22), it has metal backing plate (23) to fill up between carbon strip (22) and embedded groove (24), shape, the size of metal backing plate (23) are the same with the plane shape of embedded groove (24), size are the same, the bottom surface both ends symmetry of carbon strip (22) be equipped with fastening bolt (4), the both ends of metal backing plate (23) be equipped with fastening bolt (4) assorted first screw (5), the bottom of embedded groove (24) be equipped with fastening bolt (4) position corresponding second screw, screw up nut (7) behind first screw (5), the second screw through fastening bolt (4) and be fixed with carbon slide shell (21).
2. A pantograph head for a low-noise high-speed train, according to claim 1, wherein said carbon slide shell (21) has a symmetrical distribution of ellipsoidal convex structures (211) on both sides.
3. A pantograph head of a low-noise high-speed train as claimed in claim 2, wherein the lower surface of said carbon slider shell (21) is distributed with ridge stripe structure (212), the direction of stripe pattern of the ridge stripe structure (212) is parallel to the direction of air flow, the distance between each stripe of the ridge stripe structure (212) is the same as the distance between the convex structures of the ellipsoidal convex structure (211), and the lower surface of said ridge stripe structure (212) is distributed with the pinnate structure protrusions (213) uniformly.
4. The pantograph head of a low-noise high-speed train as claimed in claim 1, wherein said bracket (1) is of an i-shaped structure, and comprises a support rod (11) and a bearing part (12) fixed to the front end and the rear end of the support rod (11), and two carbon sliding plates (2) are symmetrically arranged on both sides of the support rod (11) and erected on the bearing part (12).
5. A low noise high speed train pantograph head according to claim 4, wherein said support rod (11) of said frame (1) has a cross section of flat oval configuration, and said carrying parts (12) fixed to the front and rear ends of said support rod (11) have an oval streamline configuration.
6. A low noise high speed train pantograph head according to claim 5, wherein said upper arm (3) is connected to said support (1) by means of a pivot rod (6), said pivot rod (6) having a flat streamline configuration (31) distributed on its outer surface.
7. A low noise high speed train pantograph bow according to claim 3, wherein said ellipsoidal convex structures (211) have a convex height of 35mm and a pitch between adjacent convex structures of 40 mm.
8. A low noise high speed train pantograph head according to claim 3, wherein the distance between the striations of said ridge striation structure (212) is 40mm and the height of the ridge striation structure (212) is 3 mm.
9. A low noise high speed train pantograph head according to claim 6, wherein the support rod (11) having a cross section of a flat elliptic structure has a major axis of 420mm and a minor axis of 25mm, and its center is concentric with the rotating shaft (6).
10. A low noise high speed train pantograph bow according to claim 5, wherein the bearing part (12) of the ellipsoidal streamline configuration has an equatorial radius a of 36mm, an equatorial radius b of 22.5mm and a polar radius c of 8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921082103.1U CN210258030U (en) | 2019-07-11 | 2019-07-11 | Low-noise pantograph head of high-speed train |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921082103.1U CN210258030U (en) | 2019-07-11 | 2019-07-11 | Low-noise pantograph head of high-speed train |
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| CN210258030U true CN210258030U (en) | 2020-04-07 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112060916A (en) * | 2020-09-11 | 2020-12-11 | 南京理工大学 | Low-noise high-speed train pantograph based on bionic structure |
| CN112793426A (en) * | 2021-02-24 | 2021-05-14 | 华东交通大学 | Antifriction and wear-resistant pantograph suitable for bidirectional running |
| CN114274781A (en) * | 2021-12-15 | 2022-04-05 | 中南大学 | Pantograph rod piece resistance reducing and noise reducing device based on porous medium material |
| CN115648950A (en) * | 2022-11-02 | 2023-01-31 | 中南大学 | Bionic device, bionic sliding plate and pantograph |
-
2019
- 2019-07-11 CN CN201921082103.1U patent/CN210258030U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112060916A (en) * | 2020-09-11 | 2020-12-11 | 南京理工大学 | Low-noise high-speed train pantograph based on bionic structure |
| CN112793426A (en) * | 2021-02-24 | 2021-05-14 | 华东交通大学 | Antifriction and wear-resistant pantograph suitable for bidirectional running |
| CN112793426B (en) * | 2021-02-24 | 2022-09-02 | 华东交通大学 | Antifriction and wear-resistant pantograph suitable for bidirectional running |
| CN114274781A (en) * | 2021-12-15 | 2022-04-05 | 中南大学 | Pantograph rod piece resistance reducing and noise reducing device based on porous medium material |
| CN115648950A (en) * | 2022-11-02 | 2023-01-31 | 中南大学 | Bionic device, bionic sliding plate and pantograph |
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Effective date of registration: 20211213 Address after: 518106 Room 301, building 8, phase II, heshuikou community, Matian street, Guangming District, Shenzhen, Guangdong Patentee after: SHENZHEN FULINTECH SCIENCE & TECHNOLOGY Co.,Ltd. Address before: 201620 No. 333, Longteng Road, Shanghai, Songjiang District Patentee before: SHANGHAI University OF ENGINEERING SCIENCE |