CN104963971B - A kind of powder metallurgy brake block structure and its processing method - Google Patents
A kind of powder metallurgy brake block structure and its processing method Download PDFInfo
- Publication number
- CN104963971B CN104963971B CN201510373466.0A CN201510373466A CN104963971B CN 104963971 B CN104963971 B CN 104963971B CN 201510373466 A CN201510373466 A CN 201510373466A CN 104963971 B CN104963971 B CN 104963971B
- Authority
- CN
- China
- Prior art keywords
- watt
- brake shoe
- brake
- backboard
- steel
- 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.)
- Active
Links
Landscapes
- Braking Arrangements (AREA)
Abstract
The invention discloses a kind of powder metallurgy brake block structure and its processing methods, the brake shoe structure includes backboard, steel back, friction piece and watt back member, the backboard is fixed in watt back member inner arc, the steel back is located in backboard Inner arc, the friction piece is fixed in steel back, described watt of back member is made of watt back of the body body and the circular arc block, boss positioning pin and the curved surface brake shoe nose that are separately positioned on watt back of the body body, and circular arc block, boss positioning pin and curved surface brake shoe nose and a watt back of the body body are an entirety.The present invention is coupled integrally with the weld seam that watt backing run connects with brake shoes steel back in both sides on brake shoe with the weld seam that watt backing run connects by brake shoes steel back in centre position on brake shoe, in brake shoe service life, brake shoe used at present can be avoided on locomotive in frequent braking process, the weld seam of soldering part is cracked, brake shoe nose welded seam especially on brake shoe is cracked or even dropping situations, eliminates traffic safety hidden danger.
Description
Technical field
The invention belongs to railway locomotive, vehicle brake technology field, be specifically related to a kind of powder metallurgy brake block structure and
Its processing method.
Background technology
When brake shoe is railway locomotive and vehicle braking, brake shoe rubbing surface compression leans against wheel tread under thrust of braking
The upper important component for generating braking moment.As shown in Figure 1 and Figure 2, existing powder metallurgy brake block typically first adds in processing
Then work block 1, positioning pin 2, watt back of the body 3, backboard 4, brake shoe nose 5 and friction piece 7 are welded on block 1 and brake shoe nose 5 watt respectively
It carries on the back in 3 external arcs, then positioning pin 2 and backboard 4 is welded in watt 3 Inner arcs of the back of the body, finally friction piece 7 is welded in backboard 4
On arc surface.The brake shoe structure due to there is the straight slot of welding brake shoe nose 5 on watt 3 extrados of the back of the body, and on watt back of the body 3 straight slot length and width
Size is limited by plate thickness, if directly increasing watt 3 plate thicknesss of the back of the body, is unfavorable for welding the straight slot of brake shoe nose on watt back of the body 3
Punch forming will increase a watt production cost for the back of the body 3 using machining process, reduces the whole production efficiency of brake shoe again.And by
Connection is needed to be welded on watt back of the body 3 after brake shoe upper stopper 1, positioning pin 2, watt back of the body 3 and the processing of 5 part of brake shoe nose, to increase
Welding job amount and brake shoe processing cost are added.
In frequent braking process, block 1 and brake shoe nose 5 go out existing powder metallurgy brake block with a watt 3 welding position weld seams of the back of the body
It existing crackle and falls off, 2 welding position weld seam of positioning pin is cracked and the failure mode that loosens, the reason is that block 1, positioning pin
2 and brake shoe nose 5 when occurring rosin joint or the small situation of welding penetration thickness sometimes with watt 3 welded seams of the back of the body, cause block 1, positioning
Pin 2 and brake shoe nose 5 and watt back of the body to couple welded seam intensity low.In frequent braking process, after especially releasing brake thrust
Watt pricker heads on brake shoe nose 5 and drives brake shoe return, and brake shoe nose 5 is deformed big by pulling force, and commissure intensity cannot resist the drawing of brake shoe return
Power and it is cracked, expand as braking number increases commissure crackle and brake shoe nose 5 caused to fall off.This failure mode is to row
Vehicle brings prodigious security risk, will also influence the traffic safety of vehicle.
Invention content
It is an object of the invention to for many places in existing brake shoe structure, using the existing deficiency of welding, the present invention provides
A kind of powder metallurgy brake block structure and its processing method.To solve brake shoe upper stopper, positioning pin and brake shoe nose and watt backing run
The problem of socket part position weld seam is cracked or even falls off improves the reliability of brake shoe back structure.
The present invention is achieved by following technical solution.
A kind of powder metallurgy brake block structure, including backboard, steel back, friction piece and watt back member, the backboard are fixed on watt
In back member inner arc, the steel back is located in backboard Inner arc, and the friction piece is fixed in steel back, described watt of back member
It is made of watt back of the body body and the circular arc block, boss positioning pin and the curved surface brake shoe nose that are separately positioned on watt back of the body body, and circular arc block,
Boss positioning pin and curved surface brake shoe nose and a watt back of the body body are an entirety.
The curved surface brake shoe nose both sides also set up brake shoe nose through-hole.
The curved surface brake shoe nose is located in the middle part of watt back of the body body, and circular arc block is respectively arranged at a watt back of the body body both ends, and about curved surface
The center line of brake shoe nose is symmetrical.
Between the boss positioning pin difference circle of position arc block and curved surface brake shoe nose, and about the center line of curved surface brake shoe nose
Symmetrically.
Described watt of back of the body body is used with backboard to be welded and fixed, and connecting arc does not weld everywhere for a watt back of the body body top-surface camber brake shoe nose position
It connects.
Described watt of back of the body body selects low-carbon steel plate to be made.
A kind of powder metallurgy brake block plus a method, steps are as follows for specific method：
(1) watt back member is processed：
First, watt length of back of the body body and wide shape are gone out with diel elder generation blanking on punching machine according to design size；
Second step goes out brake shoe nose through-hole and location hole on watt back of the body body；
Third walks, the stretched positioning pin on watt back of the body body：
4th step, the stretched block on watt back of the body body：
5th step is bent out brake shoe nose and watt back of the body arc surface on watt back of the body body；
(2) brake shoes is processed：
Powder metallurgy powder is poured into compacting model cavity and pressurizes and demoulds, obtains that friction piece is made, friction piece is bundled
After being sintered in steel back and by high-temperature pressurizing, realizes that friction piece couples with the sintering of steel back, constitute brake shoes；
(3) backboard is processed：
It (4) will processing watt back member and back of the body steel welding：
Watt back member is first fixed with welding fixture in backboard external arc, is detoured in either direction using automatic soldering method
Backboard one encloses the primary welding for completing watt back member and backboard, constitutes a watt back of the body component；
(5) brake shoes is welded on watt back of the body component backboard：
First fix the brake shoes in centre position in backboard Inner arc on watt back of the body component with welding fixture, then fixed left,
Right hand side brake block, steel back contacts with each other gapless on steel back of centre position brake shoes or so two sides and both sides location brake block；
The primary welding for completing steel back and backboard on brake shoes is enclosed along detour brake shoes one using automatic soldering method in either direction；
(6) brake shoe rubbing surface inner arc surface is processed：
Brake shoe is fixed with turning attachment on vertical lathe disk, by size requirement processing brake shoe friction inner arc surface.
The beneficial effects of the invention are as follows：
Weld seam that brake shoe structure of the present invention couples welding position in service life is cracked, soldering part
It does not fall off.On brake shoe centre position brake shoes steel back left and right sides contacted with both sides brake shoes steel back on brake shoe and between continuously
Gap, both sides brake shoes steel back connects with watt backing run on the weld seam and brake shoe that centre position brake shoes steel back connects with watt backing run on brake shoe
Weld seam connection is integral, to ensure that any one plate thickness is identical on brake shoe and nothing most weak part, watt back of the body stress deformation are uniform.
In brake shoe service life, brake shoe used at present can be avoided on locomotive in frequent braking process, the weld seam of soldering part
Cracked, the brake shoe nose welded seam especially on brake shoe is cracked or even dropping situations, eliminates traffic safety hidden danger.
Compared with prior art, the present invention has following remarkable advantage：
(1) during fabrication, moulding process can be used block, positioning pin and brake shoe nose is whole in brake shoe structure of the present invention
It closes in a watt back, can not only realize the function of former brake shoe part block, positioning pin and brake shoe nose, and make brake shoe manufacturing process
Simply, manufacturing cost is reduced；
(2) since brake shoe nose is incorporated into a watt back so that brake shoe nose is integrated with a watt back of the body, to solve brake shoe nose with
Watt back of the body connection welding position weld seam is cracked or even the problem of fall off, and improves the traffic safety of vehicle；
(3) due to being not required to welding block, positioning pin and brake shoe nose part in a watt back, to which watt back of the body be reduced or eliminated because of weldering
The deformation that high temperature causes arc surface is connect, a watt dimensional accuracy for back of the body outer arc radius is improved；
(4) block, positioning pin and brake shoe nose part are welded in former brake shoe structure due to reducing, to reduce welding brake shoe
Workload, shorten the brake shoe process-cycle, improve business efficiency, reduce brake shoe manufacturing cost.
Description of the drawings
Fig. 1 is intended to for existing powder metallurgy brake block structural schematic diagram；
Fig. 2 is block in existing powder metallurgy brake block structure, positioning pin, brake shoe nose and a watt welding structure schematic diagram for the back of the body；
Fig. 3 is the structural schematic diagram of the present invention；
Fig. 4 is the structural schematic diagram of watt back member in the present invention；
Fig. 5 is the sectional view of watt back member in the present invention；
Fig. 6 is that brake shoe nose R part does not weld schematic diagram on watt back of the body body in the present invention；
Fig. 7 is the outline structural diagram of watt back of the body body in the present invention；
Fig. 8 is the structural schematic diagram after processing brake shoe nose through-hole and location hole on watt back of the body body；
Fig. 9 is a watt back of the body body convex platform positioning pin drawing and forming schematic diagram；
Figure 10 is the A-A direction views of Fig. 9；
Figure 11 is circular arc block punch forming schematic diagram on watt back of the body body；
Figure 12 is the B-B direction view of Figure 11；
Figure 13 is that watt back member is molded outline drawing；
Figure 14 is the outline structural diagram of friction piece in the present invention；
Figure 15 is the outline structural diagram that steel is carried on the back in the present invention；
Figure 16 is the fixed watt back member schematic diagram on backboard；
Figure 17 is that watt back member schematic diagram is welded on backboard；
Figure 18 is the schematic diagram that contacts with each other between steel back before welding brake shoes；
Figure 19 is the structural schematic diagram after welding brake shoes on watt back of the body component；
Figure 20 is that brake shoe rubbing surface inner arc surface adds an outline drawing.
In figure：1- blocks, 2- positioning pins, the 3- watts of back of the body, 4- backboards, 5- brake shoe noses, 6- steel backs, 7- friction pieces, 8- watts of back
Part, 81- watts of back of the body body, 82- circular arc blocks, 83- boss positioning pins, 84- curved surface brake shoe noses, 85- brake shoe nose through-holes, 811- positioning
Hole.
Specific implementation mode
Technical scheme of the present invention is further described below in conjunction with the accompanying drawings, but claimed range is not limited to institute
It states.
As shown in Figures 3 to 6, a kind of powder metallurgy brake block structure, including backboard 4, steel back 6, friction piece 7 and watt back member
8, the backboard 4 is fixed in 8 inner arc of watt back member, and the steel back 6 is located in 4 Inner arc of backboard, and the friction piece 7 is solid
It is scheduled in steel back 6, described watt of back member 8 is fixed by watt back of the body body 81 and the circular arc block 82 being separately positioned on watt back of the body body 81, boss
Position pin 83 and curved surface brake shoe nose 84 form, and circular arc block 81, boss positioning pin 83 and curved surface brake shoe nose 84 are with a watt back of the body body 81
One entirety.Moulding process is used, by processes such as punching, stretching, bendings circular arc is kept off on the basis of watt back of the body 81 part of body
Block 82, boss positioning pin 83 and curved surface brake shoe nose 84 are made of one with a watt back of the body body 81, to solve on brake shoe in the prior art
Block 1, positioning pin 2, especially brake shoe nose 5 rosin joint occur with a watt 3 weld weld seams of the back of the body or welding penetration thickness is small causes weld seam
The problem of cracked or even soldering part falls off eliminates traffic safety hidden danger.
84 both sides of curved surface brake shoe nose also set up brake shoe nose through-hole 85.
The curved surface brake shoe nose 84 is located at watt 81 middle part of back of the body body, and circular arc block 81 is respectively arranged at watt 81 both ends of back of the body body, and
Center line about curved surface brake shoe nose 84 is symmetrical.
The boss positioning pin 83 is distinguished between circle of position arc block 82 and curved surface brake shoe nose 84, and about curved surface brake shoe nose 84
Center line it is symmetrical.
Described watt of back of the body body 81 and backboard 4 watt carries on the back 3 top-surface camber brake shoe nose of body, 84 position and transfers everywhere circle using being welded and fixed
Arc does not weld.As shown in fig. 6, its width B5 is suitably larger than 2 length of switching R and backboard contact point, pushed away convenient for releasing brake
A watt pricker heads on stress deformation when brake shoe ose band moves brake shoe return after power.
To realize watt punching of back of the body part, particularly stretching the molding with bending operation, described watt of back of the body body 3 selects mild steel
Plank is made.Circular arc block 82, boss positioning pin 83 and curved surface brake shoe nose 84 pass through watt 81 punching of back of the body body, stretching and a Curved
At an entirety.
Further illustrate powder metallurgy brake block below in conjunction with the accompanying drawings adds a method and step as follows：
(1) watt back member is processed：
First, as shown in fig. 7, going out a watt length and width for back of the body body 81 with diel elder generation blanking on punching machine according to design size
Shape；
Second step goes out brake shoe nose through-hole and location hole on watt back of the body body；
On punching machine with mold simultaneously go out bending brake shoe nose before brake shoe nose through-hole 85 and location hole 811, brake shoe nose through-hole
Width and height dimension and location hole diameter dimension are consistent with brake shoe nose and positioning pore size in former brake shoe structure, are bent for postorder
Process is got ready, and watt back of the body part after processing brake shoe nose through-hole 85 and location hole 811 is as shown in Figure 8；
Third walks, the stretched positioning pin on watt back of the body body：
With stretching die by watt back of the body 81 stretched outer circle of body and the height boss consistent with full size on punching machine, which is
For boss positioning pin 83, watt back of the body part after stretched boss positioning pin 83 is as shown in Figure 9, Figure 10；
4th step, the stretched block on watt back of the body body：
It will watt 81 stretched width of back of the body body, arc radius and the suitable circular arc block of height dimension with mold on punching machine
82；Watt back of the body body 3 after boss positioning pin 83 is processed as shown in Figure 11, Figure 12；
5th step is bent out brake shoe nose and watt back of the body arc surface on watt back of the body body
As shown in figure 13, the shape for the curved surface brake shoe nose 84 being first bent with mold on punching machine, then it is bent out arc radius
The size arc surface consistent with full size (existing watt of back of the body size).
(2) brake shoes is processed：
As shown in figure 14, width B1 sizes are less than 4 width dimensions B2 of backboard, three 6 length dimension overall lengths of steel back in steel back 6
Less than carapace length size L2.Powder metallurgy powder is poured into compacting model cavity and pressurizes and demoulds, obtains that friction piece 7 is made,
After friction piece 7 is bundled in steel back 6 and is sintered by high-temperature pressurizing, realizes that friction piece 7 couples with the sintering of steel back 6, constitute
Brake shoes；
(4) backboard is processed：
As shown in figure 15, the size of outer arc radius R1, length L2 and width B2 and former watt of back of the body part ruler on backboard part
It is very little identical；
It (4) will processing watt back member and back of the body steel welding：
As shown in Figure 16, Figure 17, watt back member 8 is first fixed with welding fixture in 4 external arc of backboard, using automatic welding
The method primary welding for completing watt back member 8 and backboard 4 of the circle of detour backboard 4 one in either direction, constitutes a watt back of the body component；
(5) brake shoes is welded on watt back of the body component backboard：
As shown in Figure 18, Figure 19, centre position is first fixed with welding fixture in the backboard Inner arc on watt back of the body component
Brake shoes, then fixed left and right side brake shoes, steel back of centre position brake shoes or so two sides and steel back on the location brake block of both sides
Contact with each other gapless；Steel back on primary completion brake shoes is enclosed along detour brake shoes one using automatic soldering method in either direction
The welding of 6 backboards 4.
(6) brake shoe rubbing surface inner arc surface is processed：
As shown in figure 20, brake shoe is fixed with turning attachment on vertical lathe disk, brake shoe friction is processed by size requirement
Face arc radius R3.
Claims (4)
1. a kind of powder metallurgy brake block structure, including backboard（4）, steel back（6）, friction piece（7）And watt back member（8）, the back of the body
Plate（4）It is fixed on a watt back member（8）In inner arc, the steel back（6）Positioned at backboard（4）In Inner arc, the friction piece（7）
It is fixed on steel back（6）On, it is characterised in that：Described watt of back member（8）By a watt back of the body body（81）And it is separately positioned on a watt back of the body body（81）
On circular arc block（82）, boss positioning pin（83）And curved surface brake shoe nose（84）Composition, circular arc block（82）, boss positioning pin
（83）And curved surface brake shoe nose（84）Pass through a watt back of the body body（81）Punching stretches and is formed by bending an entirety；Described watt of back of the body body
（81）With backboard（4）Using being welded and fixed, and watt back of the body body（3）Top-surface camber brake shoe nose（84）Connecting arc does not weld everywhere at position；
Described watt of back of the body body（3）Low-carbon steel plate is selected to be made;The curved surface brake shoe nose（84）Positioned at a watt back of the body body（81）Middle part, circular arc gear
Block（82）It is respectively arranged at a watt back of the body body（81）Both ends, and about curved surface brake shoe nose（84）Center line it is symmetrical.
2. a kind of powder metallurgy brake block structure according to claim 1, it is characterised in that：The curved surface brake shoe nose（84）Two
Side also sets up brake shoe nose through-hole（85）.
3. a kind of powder metallurgy brake block structure according to claim 1, it is characterised in that：The boss positioning pin（83）Point
Other circle of position arc block（82）With curved surface brake shoe nose（84）Between, and about curved surface brake shoe nose（84）Center line it is symmetrical.
4. a kind of processing method of powder metallurgy brake block, steps are as follows for specific method：
（1）Process watt back member：
First, watt length of back of the body body and wide shape are gone out with diel elder generation blanking on punching machine according to design size；
Second step goes out brake shoe nose through-hole and location hole on watt back of the body body；
Third walks, the stretched positioning pin on watt back of the body body；
4th step, the stretched block on watt back of the body body；
5th step is bent out brake shoe nose and watt back of the body arc surface on watt back of the body body；
（2）Process brake shoes：
Powder metallurgy powder is poured into compacting model cavity and pressurizes and demoulds, obtains that friction piece is made（7）, friction piece（7）Bundle
It ties up in steel back（6）After being sintered above and by high-temperature pressurizing, friction piece is realized（7）With steel back（6）Sintering connection, constitute brake
Block；
Process backboard：
（4）It will processing watt back member and back of the body steel welding：
In backboard（4）In external arc watt back member is first fixed with welding fixture（8）, using automatic soldering method in either direction around
Row backboard（4）One circle is primary to complete watt back member（8）With backboard（4）Welding, constitute watt the back of the body component；
（5）Brake shoes is welded on watt back of the body component backboard：
The brake shoes in centre position, then fixed left and right side are first fixed in backboard Inner arc on watt back of the body component with welding fixture
Brake shoes, the steel back of centre position brake shoes（6）Left and right two sides and steel back on the location brake block of both sides（6）It contacts with each other continuously
Gap；Steel back on primary completion brake shoes is enclosed along detour brake shoes one using automatic soldering method in either direction（6）Backboard（4）'s
Welding；
（6）Process brake shoe rubbing surface inner arc surface：
Brake shoe is fixed with turning attachment on vertical lathe disk, brake shoe rubbing surface circular arc is processed by size requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510373466.0A CN104963971B (en) | 2015-06-30 | 2015-06-30 | A kind of powder metallurgy brake block structure and its processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510373466.0A CN104963971B (en) | 2015-06-30 | 2015-06-30 | A kind of powder metallurgy brake block structure and its processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104963971A CN104963971A (en) | 2015-10-07 |
| CN104963971B true CN104963971B (en) | 2018-09-14 |
Family
ID=54218025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510373466.0A Active CN104963971B (en) | 2015-06-30 | 2015-06-30 | A kind of powder metallurgy brake block structure and its processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104963971B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106111790B (en) * | 2016-07-15 | 2018-06-29 | 晋江凯燕新材料科技有限公司 | Brake piece preparation method |
| CN107576613B (en) * | 2017-09-30 | 2023-11-14 | 贵州新安航空机械有限责任公司 | Powder metallurgy brake shoe's tile back and friction body longitudinal adhesion test fixture |
| CN107477121A (en) * | 2017-10-23 | 2017-12-15 | 重庆奔隆机械有限公司 | Light rail brake system alignment pin anti-drop device |
| CN111545669A (en) * | 2020-04-30 | 2020-08-18 | 郑州三环模具有限公司 | High brake shoe tile back of body automatic production line that rubs of freight train |
| CN114593165B (en) * | 2022-02-10 | 2023-07-14 | 眉山中车制动科技股份有限公司 | Prevent virtual brake shoe structure of wearing |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2535605Y (en) * | 2001-09-20 | 2003-02-12 | 乐清市粉末冶金厂 | Subway brake shoe |
| CN1559845A (en) * | 2003-12-22 | 2005-01-05 | 重庆南机务段职工技协技术服务部 | Powder metallurgy brake shoe for locomotive engine |
| CN101162033A (en) * | 2006-10-13 | 2008-04-16 | 贵州新安航空机械有限责任公司 | Freight car compartment powder metallurgy brake block |
| CN201166075Y (en) * | 2008-03-21 | 2008-12-17 | 北京华夏友联电气化新技术发展有限公司 | Powder metallurgical brake shoe |
| CN201621210U (en) * | 2009-12-24 | 2010-11-03 | 贵州新安航空机械有限责任公司 | Novel brake shoe |
| CN201627849U (en) * | 2009-12-24 | 2010-11-10 | 贵州新安航空机械有限责任公司 | Anti-breaking brake shoe |
| CN203239803U (en) * | 2013-05-15 | 2013-10-16 | 黄建东 | Improved structure of brake shoe back iron |
| CN203362913U (en) * | 2013-06-06 | 2013-12-25 | 贵州新安航空机械有限责任公司 | Anti-fracture composition brake shoe for metro vehicle |
| CN104061260A (en) * | 2014-05-04 | 2014-09-24 | 贵州新安航空机械有限责任公司 | Powder metallurgy brake shoe with bent welded structure |
| CN204061662U (en) * | 2014-05-04 | 2014-12-31 | 贵州新安航空机械有限责任公司 | A kind of powder metallurgy brake block of improvement |
| CN205036761U (en) * | 2015-06-30 | 2016-02-17 | 贵州新安航空机械有限责任公司 | Metallurgical brake shoe structure of powder |
-
2015
- 2015-06-30 CN CN201510373466.0A patent/CN104963971B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2535605Y (en) * | 2001-09-20 | 2003-02-12 | 乐清市粉末冶金厂 | Subway brake shoe |
| CN1559845A (en) * | 2003-12-22 | 2005-01-05 | 重庆南机务段职工技协技术服务部 | Powder metallurgy brake shoe for locomotive engine |
| CN101162033A (en) * | 2006-10-13 | 2008-04-16 | 贵州新安航空机械有限责任公司 | Freight car compartment powder metallurgy brake block |
| CN201166075Y (en) * | 2008-03-21 | 2008-12-17 | 北京华夏友联电气化新技术发展有限公司 | Powder metallurgical brake shoe |
| CN201621210U (en) * | 2009-12-24 | 2010-11-03 | 贵州新安航空机械有限责任公司 | Novel brake shoe |
| CN201627849U (en) * | 2009-12-24 | 2010-11-10 | 贵州新安航空机械有限责任公司 | Anti-breaking brake shoe |
| CN203239803U (en) * | 2013-05-15 | 2013-10-16 | 黄建东 | Improved structure of brake shoe back iron |
| CN203362913U (en) * | 2013-06-06 | 2013-12-25 | 贵州新安航空机械有限责任公司 | Anti-fracture composition brake shoe for metro vehicle |
| CN104061260A (en) * | 2014-05-04 | 2014-09-24 | 贵州新安航空机械有限责任公司 | Powder metallurgy brake shoe with bent welded structure |
| CN204061662U (en) * | 2014-05-04 | 2014-12-31 | 贵州新安航空机械有限责任公司 | A kind of powder metallurgy brake block of improvement |
| CN205036761U (en) * | 2015-06-30 | 2016-02-17 | 贵州新安航空机械有限责任公司 | Metallurgical brake shoe structure of powder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104963971A (en) | 2015-10-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104963971B (en) | A kind of powder metallurgy brake block structure and its processing method | |
| CN104061260A (en) | Powder metallurgy brake shoe with bent welded structure | |
| CN207790397U (en) | Steel-aluminum conductor rail | |
| CN101406985B (en) | Porous cold-welding mold | |
| CN111112606B (en) | Powder metallurgy brake pad friction block pressing die and method | |
| CN205036761U (en) | Metallurgical brake shoe structure of powder | |
| CN109440033B (en) | Process method for eliminating residual stress of arc-shaped forge piece | |
| CN204122595U (en) | Engine breathing mount pad is bent into pattern | |
| CN202316620U (en) | Cold extrusion molding wedge-shaped die for lute hole of whole axle housing of automobile | |
| CN211758452U (en) | Powder metallurgy brake lining friction block pressing die | |
| CN211737840U (en) | Improved brake pad for high-speed train | |
| CN213831699U (en) | High-performance brake caliper | |
| CN103737191A (en) | Sheet metal part projection welding structure and projection welding process thereof | |
| CN204061662U (en) | A kind of powder metallurgy brake block of improvement | |
| CN104930083B (en) | A kind of brake tile structure and its manufacturing process | |
| CN204828381U (en) | Two tile back of body brake shoe structures | |
| CN203992053U (en) | Steel pipe fitting and connector cold weld device | |
| CN108425975B (en) | Powder metallurgy brake pad for medium-low speed motor train unit and installation method thereof | |
| CN203002938U (en) | Anti-rebound bending die | |
| CN105041919B (en) | A kind of double watt back structure brake shoe and its manufacturing process | |
| CN101937766B (en) | Central pressing draw bar of reactor | |
| CN204828382U (en) | Brake block structure | |
| CN106141562B (en) | The restorative procedure and its prosthetic device in the cellular embedded block inner mold face of engine inner wall | |
| CN102974701B (en) | Forming die for machining method for high-strength transverse 8-shaped parts | |
| CN210153118U (en) | Steel backing for high-speed rail brake pad |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |