CN218543018U - I-B type forked tail steel backing brake block - Google Patents
I-B type forked tail steel backing brake block Download PDFInfo
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- CN218543018U CN218543018U CN202221673359.1U CN202221673359U CN218543018U CN 218543018 U CN218543018 U CN 218543018U CN 202221673359 U CN202221673359 U CN 202221673359U CN 218543018 U CN218543018 U CN 218543018U
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Abstract
An I-B type dovetail steel backing brake pad is characterized in that seventeen cuboid prismatic friction block units are symmetrically arranged along the symmetry line of a dovetail steel backing, and a plurality of anti-rotation platforms are arranged between the friction block units; eleven friction block units are arranged in a sector arc area between the long arc edge and the short arc edge in three rows along a circular arc concentric with the long arc edge and the short arc edge to form a first friction group, and three friction block units are symmetrically arranged on two sides of the sector arc area respectivelyA second friction pack as a pack; the side prism of clutch blocks unit sets up R15 mm's round chamfer, and the friction surface length of clutch blocks unit is 55mm, and wide 40mm has seted up the louvre that the diameter is 14mm on the clutch blocks unit. Compare traditional I-B type forked tail steel backing brake block, the utility model discloses an effective friction area has reached 315mm 2 And the larger effective friction area can effectively reduce eccentric wear and prolong the service life.
Description
Technical Field
The utility model relates to a powder metallurgy brake lining technical field of high-speed EMUs especially relates to an I-B type forked tail steel backing brake lining.
Background
The powder metallurgy brake pad for the high-speed motor train unit is a key part in a train braking system, and has certain economical efficiency besides safe, reliable and stable braking performance. The increase of the friction area is an effective way for prolonging the service life of the powder metallurgy brake pad for the high-speed motor train unit. The brake force distribution of each friction body on the brake pad is balanced, so that the brake pad is prevented from generating large eccentric wear in the braking process, the braking performance of the brake pad can be effectively improved, and the service life of the brake pad can be effectively prolonged. The brake pads designed aiming at the dovetail I-B type steel back specified in the standard TJ/CL307-2019 are generally arranged in an octagonal friction body arrangement, a regular hexagon and an inclined hexagon friction body arrangement. After the structure is applied by engineering, the following problems exist:
1. the utilization rate of the steel backing is low, for example, the friction area of the I-B type dovetail steel backing brake pad provided by the utility model with the patent number of CN202120902841.7 is only 290mm 2 The effective friction area is small, and the service life is short;
2. the friction body is stressed unevenly in the braking process, so that greater eccentric wear is caused, and the service life and the braking stability of the brake pad are influenced;
3. the arrangement mode of the friction bodies is unreasonable, the friction bodies are attached tightly, and the brake pad braking performance and the service life of the brake disc are influenced by the friction performance decline and the adhesion among the friction bodies caused by high local temperature in the braking process.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a I-B type forked tail steel backing brake lining, the utility model discloses a realize like this:
an I-B type dovetail steel backing brake pad comprises an I-B type dovetail steel backing, wherein the edge profile of the dovetail steel backing is a polygon with axial symmetry, the edge profile comprises a long arc edge, two ends of the long arc edge extend downwards and are adducted to form side wing parts, one ends of the side wing parts, which are far away from the long arc edge, are folded towards each other to form bottom corner parts, the two bottom corner parts are connected through a short arc edge, the dovetail steel backing extends from the long arc edge towards the direction close to the short arc edge along the symmetry line of the edge profile, then extends towards the left side to be folded and finally is connected to the fractal line of the short arc edge, and the first steel backing base body and the second steel backing base body which can be spliced with each other are separated,
seventeen cuboid prismatic friction block units are symmetrically arranged on the dovetail steel back along the symmetry line, and a plurality of anti-rotation tables are arranged among the friction block units;
eleven friction block units are arranged in a sector arc area between the long arc edge and the short arc edge in three rows along an arc shape concentric with the long arc edge and the short arc edge to form a first friction group, and two sides of the sector arc area are respectively and symmetrically provided with a second friction group formed by three friction block units in one group;
the side edge column of the friction block unit is provided with a R15mm round chamfer, the friction surface of the friction block unit is 55mm long and 40mm wide, and the friction block unit is provided with a heat dissipation hole with the diameter of 14 mm.
Preferably, the number ratio of the friction block units of the first friction group to each row from the long arc side to the direction close to the short arc side is 4:4:3, the number ratio of the friction block units of the first friction group on the first steel backing base body to the second steel backing base body is 5:6.
as a further improvement, the friction block unit of the second friction group includes a first friction block close to the first friction group and close to the bottom corner, the long side of the first friction block is parallel to the bottom corner, a second friction block is arranged on the side of the first friction block far away from the first friction group, the long side of the second friction block is perpendicular to the long side of the first friction block, a third friction block is arranged on the side of the first friction block far away from the bottom corner, and the long side of the third friction block is perpendicular to the long side of the first friction block.
As a further improvement, the rotation prevention table includes:
the first anti-rotation group is arranged on one side, close to the long arc edge, of the first friction group and comprises six anti-rotation tables in total, the anti-rotation tables of the first anti-rotation group are mutually attached to the short edges of the friction block units in the first friction group, and one side, close to the long arc edge, of the anti-rotation tables of the first anti-rotation group is attached to the edge contour of the long arc edge;
the second anti-rotation group is arranged on one side, close to the wing part, of the second friction group and comprises two anti-rotation platforms in total, the anti-rotation platforms of the second anti-rotation group are respectively attached to the short side of the second friction block and the long side of the third friction block, and one side, close to the wing part, of the anti-rotation platforms of the second anti-rotation group is attached to the edge contour of the wing part;
the third rotation prevention set is arranged between the first friction set and the first friction block and comprises two rotation prevention tables in total, the rotation prevention tables of the third rotation prevention set are respectively attached to the long edge of the first friction block and the short edge of the friction block unit, close to the short arc edge and the second friction set, in the first friction set, and one side, close to the bottom corner, of the rotation prevention tables of the third rotation prevention set is attached to the edge contour of the bottom corner;
and the fourth anti-rotation group is arranged inside the first friction group and positioned on the second steel backing base body and only comprises an anti-rotation table, and the anti-rotation table of the fourth anti-rotation group is attached to the long edge of the friction block unit which is close to one side of the short arc edge and positioned in the middle of the first friction group.
As a further improvement, the friction block units in the middle row in the first friction group and the friction block units close to one side of the long arc edge are respectively attached to one long edge.
As a further improvement, the long sides of the friction block units in the first friction group, which are close to the short arc sides, are tangent to the short arc sides respectively.
The beneficial effects of the utility model reside in that:
1. seventeen cuboid prismatic friction block units are symmetrically arranged on the dovetail steel back along the symmetry line of the dovetail steel back and are rubbedThe side prism of the block unit is provided with a R15mm fillet, the length of the friction surface is 55mm, the width of the friction surface is 40mm, and a heat dissipation hole with the diameter of D =14mm is formed, so that the whole effective friction area of the brake pad is 310-315 mm 2 Compared with the traditional I-B type dovetail steel backing brake pad, the effective friction area is greatly increased.
2. Through in the sector arc region that encloses to establish at long arc limit and short arc limit, be the triplex row along the circular arc line with long arc limit and short arc limit concentric and set up first friction group, set up three clutch blocks unit in the bilateral symmetry of first friction group and be a set of second friction group, realized when to the braking, the frictional force that produces along the wheel tangential can with each clutch blocks unit between more agree with, reduce the emergence of eccentric wear, prolong the life of brake lining.
Drawings
Fig. 1 is a schematic view of the dovetail steel back front view structure of the present invention.
Fig. 2 is a schematic view of the overall explosion structure of the present invention.
Fig. 3 is a schematic diagram of the friction pack differentiation under the overall front view condition of the present invention.
Fig. 4 is a schematic view of the present invention showing the entire front view of the anti-rotation platform.
Detailed Description
To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
An I-B type dovetail steel backing brake pad comprises an I-B type dovetail steel backing 1, wherein the edge profile of the dovetail steel backing 1 is an axisymmetric polygon, the edge profile comprises a long arc edge 21, two ends of the long arc edge 21 extend downwards and are adducted to form side wing parts 22, one ends, far away from the long arc edge 21, of the side wing parts 22 are folded towards each other to form bottom corner parts 23, the two bottom corner parts 23 are connected through a short arc edge 24, the dovetail steel backing 1 extends from the long arc edge 21 towards the direction close to the short arc edge 24 along the symmetry line of the edge profile, then extends towards the left side and is finally connected to a fractal line 25 of the short arc edge 24, and the first steel backing base 21 and the second steel backing base 12 are separated into a first steel backing base body 21 and a second steel backing base body 12 which can be spliced with each other,
the dovetail steel back 1 is provided with seventeen cuboid prismatic friction block units 3 along the symmetrical line symmetrical arrangement, still be provided with a plurality of revolving stages of preventing between the friction block unit 3.
The side edge columns of the friction block units 3 are provided with R15mm round chamfers, the friction surfaces of the friction block units 3 are 55mm long and 40mm wide, and heat dissipation holes with the diameters of 14mm are formed in the friction block units 3. Each friction block unit 3 comprises a cuboid prismatic friction body 31, a steel back ball socket is formed in the dovetail steel back 1, and the friction body 31 is fixedly arranged on the dovetail steel back 1 through a disc spring 32 matched with the steel back ball socket and a clamp spring 33.
Eleven friction block units 3 are arranged in a sector arc area between the long arc edge 21 and the short arc edge 24 in three rows along an arc shape concentric with the long arc edge 21 and the short arc edge 24 to form a first friction group 41, and two sides of the sector arc area are respectively and symmetrically provided with a second friction group 42 formed by combining three friction block units 3;
preferably, the number ratio of the friction block units 3 of the first friction group 41 in each row from the long arc edge 21 to the direction close to the short arc edge 24 is 4:4:3, the number ratio of the friction block units 3 of the first friction group 41 on the first steel backing base body 21 to the second steel backing base body 12 is 5:6.
as a further improvement, the friction block unit 3 of the second friction group 42 includes a first friction block 311 close to the first friction group 41 and close to the bottom corner 23, a long side of the first friction block 311 is parallel to the bottom corner 23, a second friction block 312 is disposed on a side of the first friction block 311 away from the first friction group 41, a long side of the second friction block 312 is perpendicular to the long side of the first friction block 311, a third friction block 313 is disposed on a side of the first friction block 311 away from the bottom corner 23, and a long side of the third friction block 313 is perpendicular to the long side of the first friction block 311.
For those skilled in the art, the dovetail steel backing 1 can be sequentially and equidistantly divided into three regions of an outer ring, a middle ring and an inner ring from the long arc edge 21 to the direction close to the short arc edge 24 by a wheel disc or an axle disc, the three regions are different in friction temperature and abrasion loss of the friction block units 3 in actual use due to the reasons of contact area with the external space, different positive pressure ratios of the inner ring, the middle ring and the outer ring, different linear speeds in braking and the like, and eccentric wear is more easily generated if the number ratio of the friction block units 3 is unreasonable designed, so that the service life of the brake pad is shortened. Under foretell arrangement, the utility model provides an effective friction area's ratio of circle in outer lane, the centre circle of I-B type forked tail steel backing brake block and the interior circle of circle friction block unit 3 is about 2:3: and 4, when the material is applied to the I-B type dovetail steel backing 1, the eccentric wear condition caused by the difference of positive pressure ratio can be effectively balanced, friction chips can be more reasonably discharged, and heat can be dissipated timely.
As a further improvement, the rotation prevention table includes:
the first anti-rotation group 51 is arranged on one side, close to the long arc edge 21, of the first friction group 41 and comprises six anti-rotation tables, the anti-rotation tables of the first anti-rotation group 51 are attached to the short sides of the friction block units 3 in the first friction group 41, and one side, close to the long arc edge 21, of the anti-rotation tables of the first anti-rotation group 51 is attached to the edge profile of the long arc edge 21;
the second anti-rotation set 52 is arranged on one side of the second friction set 42 close to the flank portion 22 and comprises two anti-rotation tables, the anti-rotation tables of the second anti-rotation set 52 are respectively attached to the short side of the second friction block 312 and the long side of the third friction block 313, and one side of the anti-rotation tables of the second anti-rotation set 52 close to the flank portion 22 is attached to the edge contour of the flank portion 22;
the third rotation prevention set 53 is arranged between the first friction set 41 and the first friction block 311, and comprises two rotation prevention tables in total, the rotation prevention tables of the third rotation prevention set 53 are respectively attached to the long side of the first friction block 311 and the short side of the friction block unit 3, close to the short arc side 24 and the second friction set 42, in the first friction set 41, and one side, close to the bottom corner 23, of the rotation prevention tables of the third rotation prevention set 53 is attached to the edge contour of the bottom corner 23;
and the fourth anti-rotation group 54 is arranged inside the first friction group 41 and on the second steel backing base body 12, and only comprises one anti-rotation table, and the anti-rotation table of the fourth anti-rotation group 54 is attached to the long side of the friction block unit 3 which is close to one side of the short arc edge 24 and is positioned in the middle of the first friction group 41.
As a further improvement, the friction block units 3 in the middle row in the first friction group 41 and the friction block units 3 near the long arc edge 21 are respectively attached to each other one by one.
As a further improvement, the long sides of the friction block units 3 on the side close to the short arc side 24 in the first friction group 41 are respectively tangent to the short arc side 24.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. An I-B type dovetail steel backing brake pad comprises an I-B type dovetail steel backing, wherein the edge profile of the dovetail steel backing is in a polygon with axial symmetry, the edge profile comprises a long arc edge, two ends of the long arc edge extend downwards and are adducted to form side wing parts, one ends of the side wing parts, which are far away from the long arc edge, are folded towards each other to form bottom corner parts, the two bottom corner parts are connected through a short arc edge, the dovetail steel backing extends from the long arc edge towards the direction close to the short arc edge along the symmetry line of the edge profile, then extends towards the left side and is finally connected to the fractal line of the short arc edge, and the first steel backing base body and the second steel backing base body which can be spliced with each other are separated,
seventeen cuboid prismatic friction block units are symmetrically arranged on the dovetail steel back along the symmetry line, and a plurality of anti-rotation tables are arranged among the friction block units;
eleven friction block units are arranged in a sector arc area between the long arc edge and the short arc edge in three rows along an arc shape concentric with the long arc edge and the short arc edge to form a first friction group, and two sides of the sector arc area are respectively and symmetrically provided with a second friction group formed by three friction block units in one group;
the side prism of clutch block unit sets up R15 mm's round chamfer, the friction surface length 55mm of clutch block unit, wide 40mm, the louvre that the diameter is 14mm has been seted up in the clutch block unit.
2. The I-B type dovetail steel backing brake pad of claim 1,
the number ratio of the friction block units of the first friction group to each row from the long arc edge to the direction close to the short arc edge is 4:4:3, the number ratio of the friction block units of the first friction group on the first steel backing base body to the second steel backing base body is 5:6.
3. the I-B type dovetail steel backing brake pad of claim 2,
the clutch blocks unit of second friction group is including being close to first friction group just is close to the first clutch blocks of base angle portion, the long limit of first clutch blocks is on a parallel with base angle portion, first clutch blocks is kept away from one side of first friction group is provided with the second clutch blocks, the long limit of second clutch blocks with the long limit mutually perpendicular of first clutch blocks, first clutch blocks is kept away from one side of base angle portion is provided with the third clutch blocks, the long limit of third clutch blocks with the long limit mutually perpendicular of first clutch blocks.
4. The I-B type dovetail steel backing brake pad of claim 3, wherein said anti-rotation platform comprises:
the first anti-rotation group is arranged on one side, close to the long arc edge, of the first friction group and comprises six anti-rotation tables in total, the anti-rotation tables of the first anti-rotation group are mutually attached to the short edges of the friction block units in the first friction group, and one side, close to the long arc edge, of the anti-rotation tables of the first anti-rotation group is attached to the edge contour of the long arc edge;
the second anti-rotation group is arranged on one side, close to the wing part, of the second friction group and comprises two anti-rotation platforms in total, the anti-rotation platforms of the second anti-rotation group are respectively attached to the short side of the second friction block and the long side of the third friction block, and one side, close to the wing part, of the anti-rotation platforms of the second anti-rotation group is attached to the edge contour of the wing part;
the third rotation prevention set is arranged between the first friction set and the first friction block and comprises two rotation prevention tables in total, the rotation prevention tables of the third rotation prevention set are respectively attached to the long edge of the first friction block and the short edge of the friction block unit, close to the short arc edge and the second friction set, in the first friction set, and one side, close to the bottom corner, of the rotation prevention tables of the third rotation prevention set is attached to the edge contour of the bottom corner;
and the fourth anti-rotation group is arranged inside the first friction group and positioned on the second steel backing base body and only comprises an anti-rotation table, and the anti-rotation table of the fourth anti-rotation group is attached to the long edge of the friction block unit which is close to one side of the short arc edge and positioned in the middle of the first friction group.
5. The I-B type dovetail steel backing brake pad of claim 4,
and the friction block units in the middle line in the first friction group and the friction block units close to one side of the long arc edge are respectively attached to one long edge.
6. The I-B type dovetail steel backing brake pad of claim 4,
and the long edges of the friction block units close to one side of the short arc edge in the first friction group are respectively tangent to the short arc edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221673359.1U CN218543018U (en) | 2022-06-30 | 2022-06-30 | I-B type forked tail steel backing brake block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221673359.1U CN218543018U (en) | 2022-06-30 | 2022-06-30 | I-B type forked tail steel backing brake block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218543018U true CN218543018U (en) | 2023-02-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221673359.1U Active CN218543018U (en) | 2022-06-30 | 2022-06-30 | I-B type forked tail steel backing brake block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218543018U (en) |
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2022
- 2022-06-30 CN CN202221673359.1U patent/CN218543018U/en active Active
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