CN203796811U - Brake pad with forked tail plate - Google Patents
Brake pad with forked tail plate Download PDFInfo
- Publication number
- CN203796811U CN203796811U CN201420107955.2U CN201420107955U CN203796811U CN 203796811 U CN203796811 U CN 203796811U CN 201420107955 U CN201420107955 U CN 201420107955U CN 203796811 U CN203796811 U CN 203796811U
- Authority
- CN
- China
- Prior art keywords
- brake pad
- backboard
- friction piece
- brake
- coattail board
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 210000005056 cell body Anatomy 0.000 claims description 4
- 238000000034 method Methods 0.000 description 9
- 238000009434 installation Methods 0.000 description 5
- 208000037656 Respiratory Sounds Diseases 0.000 description 3
- 230000002411 adverse Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 101100346171 Arabidopsis thaliana MORC3 gene Proteins 0.000 description 2
- 101100168604 Candida albicans (strain SC5314 / ATCC MYA-2876) CRH12 gene Proteins 0.000 description 2
- 101100168607 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) UTR2 gene Proteins 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 210000004027 cell Anatomy 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000013138 pruning Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Landscapes
- Braking Arrangements (AREA)
Abstract
The utility model provides a brake pad with a forked tail plate. The brake pad comprises a brake pad back plate (1), a plurality of friction bodies (2) riveted to the brake pad back plate (1), and the forked tail plate (6) fixedly connected with the brake pad back plate (1). Gaps are arranged between the adjacent friction bodies (2). The friction bodies (2) comprise friction blocks (3), friction body back plates (4) and rivets (5), wherein the friction blocks (3) and brake discs are cooperated to produce braking force, the friction body back plates (4) are sintered to the friction blocks (3), and the friction bodies (2) are connected to the brake pad back plate (1) through the rivets (5). Grooves (63) are formed in the left side and the right side of the forked tail plate (6) in the length direction, and the forked tail plate (6) is divided into wide portions (61) located at the two ends of the forked tail plate (6), and a narrow portion (62) connected between the wide portions (61). The brake pad with the forked tail plate structurally has the good radiating performance, and facilitates discharge of grinding objects, thereby meeting and improving the braking performance of a train.
Description
Technical field
The utility model relates to a kind of brake pad with coattail board, belongs to high-speed train braking technical field.
Background technique
Braking device is the important device that train safe slows down or stops, and for ensureing the safety of train, must can ensure under various conditions the braking ability of train.Along with improving constantly of train running speed, higher to the braking ability requirement of braking device, traditional Block brake does not adapt to the development of bullet train yet, and the passenger train of China has substantially all adopted disc braking at present.
Disc braking claims again friction type Disk brake device, to load onto brake disc on axletree or in wheel web side, be generally cast iron disk, make two brake linings that composite is made press brake disc side with brake clamp, produce braking force by friction, train momentum is transformed into heat energy, when high-speed train braking, its kinetic energy overwhelming majority is transformed into heat energy, make the temperature of brake pad and brake disc friction surface up to more than 500 DEG C, local lightning temperature can reach 1000 DEG C, therefore, requires also more and more higher to the brake pad of bullet train train.
In prior art, as shown in Figure 1, brake lining has several brake pads to form by rivet and backboard riveted joint to the brake lining structure that CRH2 rail motor set use.This structure mainly produces 2 problems in actual use:
(1) brake disc mating with brake lining is forged steel dish, and forged steel dish is integral type structure, and centre does not have air channel.And gap is very little between the brake pad of existing brake lining, thereby cause the heat producing in braking process to be difficult for distributing, long-term work is easily that brake disc produces the adverse consequencess such as hot spot, crackle, distortion;
(2) the grinding thing that brake lining produces in braking process is difficult for discharging, and these grinding things are deposited between brake lining and brake disc, and cutting brake disc makes brake disc produce cut, the abrasion of ditch shape etc. extremely; Meanwhile, the wire that cutting brake disc produces can further produce and destroy brake disc, and this phenomenon is more obvious at low temperature, sleety weather.
Model utility content
For this reason, technical problem to be solved in the utility model is, a kind of discharge that is beneficial to brake lining grinding thing in braking process is provided, and has the brake lining of better heat dispersion, thereby meets and improve the braking ability of train.
For solving the problems of the technologies described above, a kind of brake pad with coattail board of the present utility model, comprise, brake lining backboard, be riveted on several friction pieces on described brake lining backboard, and the coattail board being fixedly connected with described brake lining backboard, described friction piece encircles to outer shroud and is placed with multilayer along described brake lining backboard interior, between adjacent described friction piece, is provided with gap; Described friction piece comprises that described brake pad forms rivet mounting groove for coordinate the brake pad that produces braking force with brake disc; Be sintered in the friction piece backboard on described brake pad; And for described friction piece being connected in to the rivet on described brake lining backboard, described rivet head is arranged in described rivet mounting groove, the other end is riveted on described brake lining backboard through after described friction piece backboard; Described coattail board is gone up along its length the left and right sides and is offered groove, and described coattail board is divided in the wide portion at described coattail board two ends and is connected to the narrow portion between described wide portion, and described wide portion outer end is respectively arranged with the mounting groove that is connected in brake clamp.
Described brake pad is identical with the outer profile size of described friction piece backboard, and described brake pad is provided with several positioning bodies towards the one side of described friction piece backboard, and described friction piece backboard is provided with the positioning hole matching with described positioning body.
Described brake lining backboard is provided with mounting groove, and described friction piece is embedded in described mounting groove, and the size of described mounting groove and described friction piece backboard match.
Described friction piece is cylinder chamfered edge cylinder, and described mounting groove is cylindrical cell body.
Described rivet mounting groove is arranged at the central position of described brake pad, and described positioning body is four cylindrical protrusions, and it is located at respectively the diagonal position of described brake pad and about described rivet mounting groove symmetry; Described positioning hole is four circular ports, and it is arranged at respectively the diagonal position of described friction piece backboard and about described friction piece backboard Central Symmetry, the aperture of described positioning hole and the diameter of described positioning body match.
Described coattail board is riveted on described brake lining backboard.
Described coattail board is provided with riveted holes, and described riveted holes is double layout on the length direction of described wide portion, is single layout on the length direction of described narrow portion.
Described friction piece arranges 14, and wherein two lay respectively at the two ends of described brake lining backboard, and all the other 12 are two row and are arranged on described brake lining backboard by interior ring to outer shroud, and the seamed edge direction of described friction piece is consistent, thereby adjacent described gap direction is consistent.
Technique scheme of the present utility model has the following advantages compared to existing technology:
(1) brake pad with coattail board of the present utility model, comprise, brake lining backboard, be riveted on several friction pieces on described brake lining backboard, and the coattail board being fixedly connected with described brake lining backboard, be different between the brake lining brake pad of prior art gap very little, cause the heat of braking process to be not easy to distribute, the described friction piece of the brake pad with coattail board of the present utility model encircles to outer shroud and is placed with multilayer along described brake lining backboard interior, between adjacent described friction piece, be provided with gap, be conducive to the raising of brake lining radiating effect, avoid producing hot spot because heat accumulation causes brake disc, crackle, the adverse consequencess such as distortion, simultaneously, the brake pad of multi-level multiple bodies be arranged to brake time the grinding thing that produces can discharge along gap between described brake pad, can effectively prevent that the grinding thing of piling up is between brake lining and brake disc, cutting brake disc, reduce cut and the abnormal wear of brake disc, moreover, described coattail board is gone up along its length the left and right sides and is offered groove, described coattail board is divided in the wide portion at described coattail board two ends and is connected to the narrow portion between described wide portion, described wide portion outer end is respectively arranged with the mounting groove that is connected in brake clamp, described narrow portion be arranged so that described coattail board is inserting when brake clamp, friction area reduces, thereby effectively reduce the resistance of brake pad in installation process, easier for installation and cost-saving
(2) brake pad with coattail board of the present utility model, described friction piece comprises that described brake pad forms rivet mounting groove for coordinate the brake pad that produces braking force with brake disc, be sintered in the friction piece backboard on described brake pad, and for described friction piece being connected in to the rivet on described brake lining backboard, described rivet head is arranged in described rivet mounting groove, the other end is riveted on described brake lining backboard through after described friction piece backboard, by being contained in described brake pad the inside by one of described rivet, can make it bear a part of shearing force, increase the intensity of described brake pad, the cell bottom structure of described rivet mounting groove and the arc shaped surface of described rivet head mate completely simultaneously, can increase the area of contact of friction piece and backboard, make bonding force stronger, and prevent that described brake pad and described friction piece backboard from coming off.
(3) brake pad with coattail board of the present utility model, described brake pad is identical with the outer profile size of described friction piece backboard, described brake pad is provided with several positioning bodies towards the one side of described friction piece backboard, described friction piece backboard is provided with the positioning hole matching with described positioning body, on described brake pad, add locating point, can prevent that described brake pad from misplacing with described friction piece backboard in sintering process, and it is more firm that described positioning body can make after sintering that described brake pad is combined with described friction piece backboard, there is the effect of strengthening combination force, prevent coming off of brake pad and friction piece backboard.
(4) brake pad with coattail board of the present utility model, described brake lining backboard is provided with mounting groove, described friction piece is embedded in described mounting groove, the size of described mounting groove and described friction piece backboard match, thereby make the installation of described friction piece more firm, avoided it in friction process, to misplace, the stability of structure is stronger.
(5) brake pad with coattail board of the present utility model, described friction piece is cylinder chamfered edge cylinder, the part of pruning respectively along the both sides of its short transverse at cylindrical body, form two relative planes, and described plane is parallel with cylindrical center line, simultaneously, described mounting groove is cylindrical cell body, so just ensure can leave certain gap between adjacent described brake pad, be convenient to grinding thing and discharge along described gap, and heat can be distributed faster.
(6) brake pad with coattail board of the present utility model, described rivet mounting groove is arranged at the central position of described brake pad, described positioning body is four cylindrical protrusions, and it is located at respectively the diagonal position of described brake pad and about described rivet mounting groove symmetry; Described positioning hole is four circular ports, it is arranged at respectively the diagonal position of described friction piece backboard and about described friction piece backboard Central Symmetry, described positioning body can be fastened on described positioning hole along different direction, be convenient to the assembling of described positioning body and described positioning hole, simple in structure, simple operation.
(7) brake pad with coattail board of the present utility model, described friction piece arranges 14, wherein two lay respectively at the two ends of described brake lining backboard, all the other 12 are two row and are arranged on described brake lining backboard by interior ring to outer shroud, and in ensureing larger friction area, make the seamed edge direction of described friction piece consistent, so just, the gap that makes adjacent brake pad form is larger, and adjacent described gap direction is consistent, further improve the heat dispersion of flashboard, be convenient to the discharge of grinding thing.
(8) brake pad with coattail board of the present utility model, described coattail board is provided with riveted holes, described riveted holes is double layout on the length direction of described wide portion, on the length direction of described narrow portion, be single layout, thereby make the fixing more firm of described brake lining backboard and described coattail board, brake lining is stressed more even, avoids brake lining unbalance stress to produce the generation of the bad phenomenon such as piece, spot corrosion.
Brief description of the drawings
For content of the present utility model is more likely to be clearly understood, according to specific embodiment of the utility model also by reference to the accompanying drawings, the utility model is described in further detail, wherein below
Fig. 1 is the brake lining structural representation that prior art CRH2 rail motor set use;
Fig. 2 is the plan view of the brake pad with coattail board of the present utility model;
Fig. 3 is the plan view of the brake pad with coattail board of the present utility model;
Fig. 4 is the sectional view of the A-A direction of Fig. 2;
Fig. 5 is the sectional view of the B-B direction of Fig. 2;
Fig. 6 is friction piece structural perspective of the present utility model;
Fig. 7 is friction piece side view of the present utility model;
Fig. 8 is coattail board scheme of installation of the present utility model;
In figure, reference character is expressed as: 1-brake lining backboard, 2-friction piece, 21-seamed edge, 3-brake pad, 31-positioning body, 32-rivet mounting groove, 4-friction piece backboard, 41-positioning hole, 5-rivet, 6-coattail board, the wide portion of 61-, 62-narrow portion, 63-groove, 64-mounting groove, 65-rivet hole.
Embodiment
Below in conjunction with specific embodiment, the brake pad with coattail board of the present utility model is described further:
As shown in Fig. 2-3 and Fig. 8, a kind of brake pad with coattail board of the present embodiment, comprise: brake lining backboard 1, be riveted on several friction pieces 2 on described brake lining backboard 1, and the coattail board 6 being fixedly connected with described brake lining backboard 1, described friction piece 2 encircles to outer shroud and is placed with multilayer along described brake lining backboard 1 interior, between adjacent described friction piece 2, is provided with gap; As shown in Fig. 4-7, described friction piece 2 comprises the brake pad 3 that produces braking force for coordinating with brake disc, and described brake pad 3 forms rivet mounting groove 32; Be sintered in the friction piece backboard 4 on described brake pad 3; And for described friction piece 2 is connected in to the rivet 5 on described brake lining backboard 1, described rivet 5 heads are arranged in described rivet mounting groove 32, the other end is riveted on described brake lining backboard 1 through after described friction piece backboard 4, described coattail board 6 is gone up along its length the left and right sides and is offered groove 63, described coattail board 6 is divided in the wide portion 61 at described coattail board 6 two ends and is connected to the narrow portion 62 between described wide portion 61, and described wide portion 61 outer ends are respectively arranged with the mounting groove 64 that is connected in brake clamp.
Very little than gap between the brake lining friction piece 2 of prior art, the problem that causes the heat of braking process to be not easy to distribute, the described friction piece 2 of the brake pad with coattail board of the present utility model is arranged in multilayer and between adjacent friction piece 2, leaves gap and makes brake lining radiating effect better, avoid producing hot spot because heat accumulation causes brake disc, crackle, the adverse consequencess such as distortion, simultaneously, the described friction piece 2 of multi-level multiple bodies be arranged to brake time the grinding thing that produces can discharge along the gap of described brake pad, can effectively prevent that the grinding thing of piling up is between brake lining and brake disc, cutting brake disc, reduce cut and the abnormal wear of brake disc.
Simultaneously, by being contained in described friction piece the inside by one of described rivet 5, can make it bear a part of shearing force, increase the intensity of described brake pad 2, described rivet mounting groove 32 cell bottom structures mate completely with the arc shaped surface of described rivet 5 heads simultaneously, can increase the area of contact of described friction piece 2 and described brake lining backboard 1, make bonding force stronger, and prevent that described brake pad 3 from coming off with described friction piece backboard 4, and, the described narrow portion 62 of described swallow backboard 6 be arranged so that described coattail board 6 is inserting when brake clamp, the friction area of both sides significantly reduces, thereby effectively reduce the resistance of brake pad in installation process, easier for installation and cost-saving.
As shown in Figure 6, described brake pad 3 is identical with the outer profile size of described friction piece backboard 4, described brake pad 3 is provided with several positioning bodies 31 towards the one side of described friction piece backboard 4, described friction piece backboard 4 is provided with the positioning hole 41 matching with described positioning body 31, in the present embodiment, described rivet mounting groove 32 is arranged at the central position of described brake pad 3, described positioning body 31 is four cylindrical protrusions, and it is located at respectively the diagonal position of described brake pad 3 and about described rivet mounting groove 32 symmetries; Described positioning hole 41 is four circular ports, and it is arranged at respectively the diagonal position of described friction piece backboard 4 and about described friction piece backboard 4 Central Symmetries, the diameter of the aperture of described positioning hole 41 and described positioning body 31 matches.By symmetrical set-up mode, described positioning body 31 can be fastened on described positioning hole 41 along different direction, be convenient to the assembling of described positioning body 31 and described positioning hole 41, simple in structure, simple operation, simultaneously, shape and the quantity of the described positioning body 31 of described brake pad 3 of the present utility model are not limited to this, as long as can, by fixing to described brake pad 3 and described friction piece backboard 4, meet requirement of the present utility model just make it that relative movement can not occur.
As shown in Figure 4, described brake lining backboard 1 is provided with mounting groove 11, the described friction piece backboard 4 of described friction piece 2 is embedded in described mounting groove 11, the size of described mounting groove 11 and described friction piece backboard 4 match, the installation of described friction piece 2 is convenient in the setting of described mounting groove 11, can not there is not relative movement with described brake lining backboard 1 because of frictional force in described friction piece 2, structure is more stable.And described friction piece 2 is cylinder chamfered edge cylinder, be that cylindrical body has been clipped respectively a part along the relative both sides of its short transverse, and the cylinder with two relative planes is constructed, described plane is parallel with described cylindrical center line, described friction piece 2 is a symplex structure on the whole, and in the present embodiment, seamed edge 21 directions of the described plane of adjacent two described friction pieces 2 are consistent, thereby the described plane of adjacent friction piece 2 be arranged in parallel, and be all arranged at the position of closing on adjacent friction piece 2, and described mounting groove 11 is cylindrical cell body, this has just ensured can leave a larger gap between two adjacent described friction pieces 2, be convenient to discharging along described gap of grinding thing.
In the present embodiment, described friction piece 2 arranges 14, wherein two lay respectively at the two ends of described brake lining backboard 1, all the other 12 are two row and are arranged on described brake lining backboard 1 by interior ring to outer shroud, as shown in Figure 8, the other end riveted joint of the relatively described friction piece 2 of described brake lining backboard 1 has coattail board 6, described coattail board 6 is provided with riveted holes 65, described riveted holes 65 is double layout on the length direction of described wide portion 61, on the length direction of described narrow portion 62, be single layout, thereby make described brake lining backboard 1 more firm with fixing of described coattail board 6, brake lining is stressed more even, avoid brake lining unbalance stress to produce piece, the generation of the bad phenomenon such as spot corrosion.
By described coattail board 6, brake pad is fixed on brake clamp, promote brake clamp by master cylinder, thereby retardation pressure is applied on described brake lining backboard 1, and be delivered on described brake pad 3 by described friction piece backboard 4, some described brake pads 3 are fitted in stably brake disc and implement braking.
Obviously, above-described embodiment is only for example is clearly described, and the not restriction to mode of execution.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also giving exhaustive to all mode of executions.And among the protection domain that the apparent variation of being extended out thus or variation are still created in the utility model.
Claims (8)
1. a brake pad with coattail board, comprises, brake lining backboard (1) is riveted on several friction pieces (2) on described brake lining backboard (1), and the coattail board (6) being fixedly connected with described brake lining backboard (1), it is characterized in that:
Described friction piece (2) encircles to outer shroud and is placed with multilayer along described brake lining backboard (1) interior, between adjacent described friction piece (2), is provided with gap;
Described friction piece (2) comprises the brake pad (3) that produces braking force for coordinating with brake disc, and described brake pad (3) forms rivet mounting groove (32); Be sintered in the friction piece backboard (4) on described brake pad (3); And for described friction piece (2) being connected in to the rivet (5) on described brake lining backboard (1), described rivet (5) head is arranged in described rivet mounting groove (32), and the other end is riveted on described brake lining backboard (1) through after described friction piece backboard (4);
Described coattail board (6) is gone up along its length the left and right sides and is offered groove (63), described coattail board (6) is divided into and is positioned at the wide portion (61) at described coattail board (6) two ends and is connected to the narrow portion (62) between described wide portion (61), and described wide portion (61) outer end is respectively arranged with the mounting groove (64) that is connected in brake clamp.
2. the brake pad with coattail board according to claim 1, it is characterized in that: described brake pad (3) is identical with the outer profile size of described friction piece backboard (4), described brake pad (3) is provided with several positioning bodies (31) towards the one side of described friction piece backboard (4), and described friction piece backboard (4) is provided with the positioning hole (41) matching with described positioning body (31).
3. the brake pad with coattail board according to claim 2, it is characterized in that: described brake lining backboard (1) is provided with mounting groove (11), described friction piece (2) is embedded in described mounting groove (11), and the size of described mounting groove (11) and described friction piece backboard (4) match.
4. the brake pad with coattail board according to claim 3, is characterized in that: described friction piece (2) is cylinder chamfered edge cylinder, and described mounting groove (11) is cylindrical cell body.
5. the brake pad with coattail board according to claim 4, it is characterized in that: described rivet mounting groove (32) is arranged at the central position of described brake pad (3), described positioning body (31) is four cylindrical protrusions, and it is located at respectively the diagonal position of described brake pad (3) and about described rivet mounting groove (32) symmetry; Described positioning hole (41) is four circular ports, and it is arranged at respectively the diagonal position of described friction piece backboard (4) and about described friction piece backboard (4) Central Symmetry, the diameter of the aperture of described positioning hole (41) and described positioning body (31) matches.
6. according to the arbitrary described brake pad with coattail board of claim 1-5, it is characterized in that: described coattail board (6) is riveted on described brake lining backboard (1).
7. the brake pad with coattail board according to claim 6, it is characterized in that: described coattail board (6) is provided with riveted holes (65), described riveted holes (65) is double layout on the length direction of described wide portion (61), is single layout on the length direction of described narrow portion (62).
8. the brake pad with coattail board according to claim 4, it is characterized in that: described friction piece (2) arranges 14, wherein two lay respectively at the two ends of described brake lining backboard (1), all the other 12 are two row and are arranged on described brake lining backboard (1) by interior ring to outer shroud, seamed edge (21) direction of described friction piece (2) is consistent, thereby adjacent described gap direction is consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420107955.2U CN203796811U (en) | 2014-03-11 | 2014-03-11 | Brake pad with forked tail plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420107955.2U CN203796811U (en) | 2014-03-11 | 2014-03-11 | Brake pad with forked tail plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203796811U true CN203796811U (en) | 2014-08-27 |
Family
ID=51379023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420107955.2U Expired - Lifetime CN203796811U (en) | 2014-03-11 | 2014-03-11 | Brake pad with forked tail plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203796811U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508555A (en) * | 2022-03-01 | 2022-05-17 | 山东倍瑞恳新材料有限公司 | Long-life wear-resistant large truck wheel disc type brake device, formula and manufacturing process thereof |
| CN114810871A (en) * | 2022-04-18 | 2022-07-29 | 湖南博科瑞新材料有限责任公司 | Swallow-tail type integrated brake pad for motor train unit |
-
2014
- 2014-03-11 CN CN201420107955.2U patent/CN203796811U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508555A (en) * | 2022-03-01 | 2022-05-17 | 山东倍瑞恳新材料有限公司 | Long-life wear-resistant large truck wheel disc type brake device, formula and manufacturing process thereof |
| CN114508555B (en) * | 2022-03-01 | 2023-11-24 | 山东倍瑞恳新材料有限公司 | Long-service-life wear-resistant large truck wheel disc type brake device and manufacturing process thereof |
| CN114810871A (en) * | 2022-04-18 | 2022-07-29 | 湖南博科瑞新材料有限责任公司 | Swallow-tail type integrated brake pad for motor train unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 100094 Beijing city Haidian District Town West Xin Li Tun Cun Nan Railway North 500 meters Patentee after: BEIJING TIANYISHANGJIA NEW MATERIAL Corp.,Ltd. Address before: 102206 Beijing city Haidian District town Yongtai Village No. 198 Patentee before: BEIJING TIANYISHANGJIA NEW MATERIALS Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 102206 Haidian District, Beijing, Shanghai town, xinxinli village, South Railway 500 meters north. Patentee after: BEIJING TIANYISHANGJIA NEW MATERIAL Corp.,Ltd. Address before: 100094 Haidian District, Beijing, Shanghai town, xinxinli village, South Railway 500 meters north. Patentee before: BEIJING TIANYISHANGJIA NEW MATERIAL Corp.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140827 |