CN205036761U - Metallurgical brake shoe structure of powder - Google Patents
Metallurgical brake shoe structure of powder Download PDFInfo
- Publication number
- CN205036761U CN205036761U CN201520459049.3U CN201520459049U CN205036761U CN 205036761 U CN205036761 U CN 205036761U CN 201520459049 U CN201520459049 U CN 201520459049U CN 205036761 U CN205036761 U CN 205036761U
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- brake shoe
- watt
- nose
- curved surface
- steel backing
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- 239000000843 powder Substances 0.000 title abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 35
- 239000010959 steel Substances 0.000 claims abstract description 35
- 238000004663 powder metallurgy Methods 0.000 claims description 19
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims 1
- 238000003466 welding Methods 0.000 abstract description 29
- 238000000034 method Methods 0.000 abstract description 17
- 208000037656 Respiratory Sounds Diseases 0.000 abstract description 12
- 230000003137 locomotive effect Effects 0.000 abstract description 4
- 239000004927 clay Substances 0.000 abstract 4
- 238000010586 diagram Methods 0.000 description 10
- 238000005476 soldering Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 238000004080 punching Methods 0.000 description 3
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 2
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
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Abstract
The utility model discloses a metallurgical brake shoe structure of powder, the brake shoe structure includes backplate, steel backing, friction piece and back made of baked clay piece, the backplate is fixed on the inboard circular arc of back made of baked clay piece, the steel backing is located the backplate circular arc, the friction piece is fixed on the steel backing, tile back piece comprises the tile back of the body body and the circular arc dog, boss locating pin and the curved surface brake shoe nose that set up respectively on the tile back of the body body, and circular arc dog, boss locating pin and curved surface brake shoe nose are personally experienced sth. Part of the body with the tile back of the body and be a whole. The utility model discloses an on the brake shoe on welding seam and the brake shoe of intermediate position brake block steel backing and back welding made of baked clay the welding seam of both sides brake block steel backing and back welding made of baked clay couple to become integrative, in brake shoe life, the in -process is frequently brakied to the brake shoe that can avoid using at present on the locomotive, the crackle condition of droing even appears in the brake shoe nose welding welding seam that welded part's welding seam appears on the crackle, especially brake shoe, has eliminated driving safety hidden danger.
Description
Technical field
The utility model belongs to railway locomotive, vehicle brake technology field, specifically relates to a kind of powder metallurgy brake shoe structure.
Background technique
Brake shoe be railway locomotive and car brakeing time, brake thrust under brake shoe rubbing surface compress lean against vitals wheel tread producing braking moment.As shown in Figure 1 and Figure 2, existing powder metallurgy brake block is adding man-hour, normally first process block 1, locating stud 2, watt back of the body 3, backboard 4, brake shoe nose 5 and friction piece 7, then respectively block 1 and brake shoe nose 5 are welded in watt back of the body 3 external arc, again locating stud 2 and backboard 4 are welded in watt back of the body 3 Inner arc, finally friction piece 7 are welded on backboard 4 inner arc surface.This brake shoe structure is owing to watt back of the body 3 outer arced surface there being the groove of welding brake shoe nose 5, and on watt back of the body 3 length of groove and wide size by the restriction of sheet metal thickness, if directly increase watt back of the body 3 sheet metal thicknesses, be unfavorable for the groove impact briquetting of watt back of the body 3 welding brake shoe nose, adopting machining process again by increasing a watt cost of production for the back of the body 3, reducing the integral production efficiency of brake shoe.Again owing to needing connection to be welded on watt back of the body 3 after block on brake shoe 1, locating stud 2, watt back of the body 3 and the processing of brake shoe nose 5 part, thus considerably increase welding job amount and brake shoe processing cost.
Existing powder metallurgy brake block is in frequent braking process, block 1 and brake shoe nose 5 with watt carry on the back 3 welding part weld seams and occur crackle and come off, there is crackle and loosening failure mode in locating stud 2 welding part weld seam, its reason is block 1, locating stud 2 and brake shoe nose 5 with watt to carry on the back 3 welded seam sometimes there is rosin joint or welding penetration thickness little situation time, cause block 1, locating stud 2 and brake shoe nose 5 with watt to carry on the back to connect welded seam intensity low.In frequent braking process, after particularly removing brake thrust, a watt pricker heads on brake shoe nose 5 and drives brake shoe return, brake shoe nose 5 tension force deformation is large, and weld joint intensity can not be resisted brake shoe return pulling force and occur crackle, along with braking increased frequency weld joint crackle expands and causes brake shoe nose 5 to come off.This failure mode brings very large potential safety hazard to driving, also will affect the traffic safety of vehicle.
Model utility content
The purpose of this utility model is to adopt the deficiency existing for welding for many places in existing brake shoe structure, and the utility model provides a kind of powder metallurgy brake shoe structure.Thus on solution brake shoe block, locating stud and brake shoe nose with watt carry on the back welding part weld seam and occurs the problem that crackle even comes off, the reliability of raising brake shoe back structure.
The utility model is achieved by following technical solution.
A kind of powder metallurgy brake shoe structure, comprise backboard, steel backing, friction piece and watt back member, described backboard is fixed in watt back member inner arc, described steel backing is positioned in backboard Inner arc, described friction piece is fixed on steel backing, described watt of back member is made up of watt back of the body body and circular arc block, boss locating stud and the curved surface brake shoe nose be separately positioned on watt back of the body body, and circular arc block, boss locating stud and curved surface brake shoe nose are with watt to carry on the back body as a whole.
Described curved surface brake shoe nose both sides also arrange brake shoe nose through hole.
Described curved surface brake shoe nose is positioned in the middle part of watt back of the body body, and circular arc block is arranged at a watt back of the body body two ends respectively, and symmetrical about the center line of curved surface brake shoe nose.
Between described boss locating stud difference circle of position arc block and curved surface brake shoe nose, and symmetrical about the center line of curved surface brake shoe nose.
Described watt of back of the body body and backboard adopt and are welded and fixed, and watt to carry on the back body top-surface camber brake shoe nose position everywhere connecting arc do not weld.
Described watt of back of the body body selects low-carbon steel plate to make.
A processing method for powder metallurgy brake shoe, its concrete grammar step is as follows:
(1) watt back member is processed:
The first, on punch press, go out watt length of back of the body body and a wide profile with the first blanking of press tool according to design size;
Second step, watt back of the body body goes out brake shoe nose through hole and positioning hole;
3rd step, stretched locating stud on watt back of the body body:
4th step, stretched block on watt back of the body body:
5th step, watt back of the body body bends out brake shoe nose and watt back of the body arc surface;
(2) brake block is processed:
Powder metallurgy powder to be poured in pressing mould die cavity into pressurization and the demoulding, obtains making friction piece, friction piece is bundled on steel backing and after being sintered by high temperature pressing, realizes friction piece and connect with the sintering of steel backing, formation brake block;
(3) backboard is processed:
(4) watt back member will be processed weld with back of the body steel:
With welding fixture first fixing watt back member in backboard external arc, adopt automatic soldering method to enclose once complete welding of watt back member and backboard along the either direction backboard one that detours, form and watt carry on the back an assembly;
(5) on watt back of the body assembly backboard, brake block is welded:
Backboard Inner arc on watt back of the body assembly is first fixed the brake block in neutral position with welding fixture, then fix left and right sides brake block, on the two sides, steel backing left and right of neutral position brake block and both sides location brake block, steel backing contacts with each other gapless; Adopt automatic soldering method to enclose along either direction along the brake block one that detours once to complete welding of steel backing and backboard on brake block;
(6) brake shoe rubbing surface inner arc surface is processed:
Vertical lathe disk fixes brake shoe with lathe fixture, by size requirement processing brake shoe friction inner arc surface.
The beneficial effects of the utility model are:
There is not crackle in the weld seam that brake shoe structure described in the utility model connects welding part within working life, soldering part does not come off.In the middle of on brake shoe location brake block steel backing left and right sides contact with both sides brake block steel backing on brake shoe and between gapless, the weld seam that the weld seam that in the middle of on brake shoe, location brake block steel backing and watt backing run connect and both sides brake block steel backing on brake shoe and watt backing run connect is connected into integrally, thus any one thickness of slab is identical and without most weak part, watt back of the body stress deformation is even on guarantee brake shoe.Within brake shoe working life, can avoid the brake shoe that uses at present on locomotive in frequent braking process, there is crackle in the weld seam of soldering part, crackle even dropping situations appears in the brake shoe nose welded seam particularly on brake shoe, eliminates traffic safety hidden danger.
Compared with prior art, the utility model has following remarkable advantage:
(1) brake shoe structure described in the utility model during fabrication, can adopt moulding process that block, locating stud and brake shoe nose are incorporated into a watt back, not only can realize the function of former brake shoe part block, locating stud and brake shoe nose, and make brake shoe manufacture process simple, reduce manufacture cost;
(2) because brake shoe nose is incorporated into a watt back, brake shoe nose and a watt back of the body are integrated, thus solve brake shoe nose with watt carrying on the back and connect welding part weld seam and occur the problem that crackle even comes off improve the traffic safety of vehicle;
(3) owing to not needing at watt back to weld block, locating stud and brake shoe nose part, thus reduce or eliminate watt back of the body causes arc surface distortion because welding high temperature, improve a watt dimensional accuracy for back of the body outer arc radius;
(4) in former brake shoe structure, weld block, locating stud and brake shoe nose part owing to reducing, thus reduce the workload of welding brake shoe, shorten the brake shoe process-cycle, improve business efficiency, reduce brake shoe manufacture cost.
Accompanying drawing explanation
Fig. 1 is existing powder metallurgy brake block structural representation intention;
Fig. 2 is block in existing powder metallurgy brake block structure, locating stud, brake shoe nose and watt welded structure schematic diagram carried on the back;
Fig. 3 is structural representation of the present utility model;
Fig. 4 is the structural representation of watt back member in the utility model;
Fig. 5 is the sectional view of watt back member in the utility model;
Fig. 6 is that in the utility model, on watt back of the body body, brake shoe nose R part does not weld schematic diagram;
Fig. 7 is the form structure schematic diagram of watt back of the body body in the utility model;
Fig. 8 is the structural representation process brake shoe nose through hole and positioning hole on watt back of the body body after;
Fig. 9 is a watt back of the body body convex platform locating stud drawing and forming schematic diagram;
Figure 10 is the A-A direction view of Fig. 9;
Figure 11 is circular arc block impact briquetting schematic diagram on watt back of the body body;
Figure 12 is the B-B direction view of Figure 11;
Figure 13 is the shaping outline drawing of watt back member;
Figure 14 is the form structure schematic diagram of friction piece in the utility model;
Figure 15 is the form structure schematic diagram carrying on the back steel in the utility model;
Figure 16 is fixing watt back member schematic diagram on backboard;
Figure 17 welds watt back member schematic diagram on backboard;
Figure 18 is the schematic diagram that contacts with each other before welding brake block between steel backing;
Figure 19 is the structural representation weld brake block on watt back of the body assembly after;
Figure 20 is that brake shoe rubbing surface inner arc surface adds an outline drawing.
In figure: 1-block, 2-locating stud, the 3-watt of back of the body, 4-backboard, 5-brake shoe nose, 6-steel backing, 7-friction piece, 8-watt of back member, 81-watt of back of the body body, 82-circular arc block, 83-boss locating stud, 84-curved surface brake shoe nose, 85-brake shoe nose through hole, 811-positioning hole.
Embodiment
The technical solution of the utility model is further described below in conjunction with accompanying drawing, but described in claimed scope is not limited to.
As shown in Figures 3 to 6, a kind of powder metallurgy brake shoe structure, comprise backboard 4, steel backing 6, friction piece 7 and watt back member 8, described backboard 4 is fixed in watt back member 8 inner arc, described steel backing 6 is positioned in backboard 4 Inner arc, described friction piece 7 is fixed on steel backing 6, described watt of back member 8 is made up of watt back of the body body 81 and circular arc block 82, boss locating stud 83 and the curved surface brake shoe nose 84 be separately positioned on watt back of the body body 81, and circular arc block 82, boss locating stud 83 and curved surface brake shoe nose 84 is with watt to carry on the back body 81 as a whole.Namely moulding process is adopted, on watt back of the body body 81 part basis by punching, stretching, the operation such as bending circular arc block 82, boss locating stud 83 and curved surface brake shoe nose 84 with watt carry on the back body 81 and be made of one, thus to solve in prior art block 1, locating stud 2 on brake shoe, particularly brake shoe nose 5 with watt to carry on the back 3 weld weld seams and occur that the crackle even problem that comes off of soldering part appears in rosin joint or the little weld seam that causes of welding penetration thickness, eliminate traffic safety hidden danger.
Described curved surface brake shoe nose 84 both sides also arrange brake shoe nose through hole 85.
Described curved surface brake shoe nose 84 is positioned in the middle part of watt back of the body body 81, and circular arc block 82 is arranged at watt back of the body body 81 two ends respectively, and symmetrical about the center line of curved surface brake shoe nose 84.
Between described boss locating stud 83 difference circle of position arc block 82 and curved surface brake shoe nose 84, and symmetrical about the center line of curved surface brake shoe nose 84.
Described watt of back of the body body 81 adopts with backboard 4 and is welded and fixed, and watt to carry on the back body 81 top-surface camber brake shoe nose 84 position everywhere connecting arc do not weld.As shown in Figure 6, its width B 5 is suitably greater than 2 length of switching R and backboard point of contact, is convenient to remove watt pricker after thrust that brakes and heads on stress deformation when brake shoe ose band moves brake shoe return.
For realizing the shaping of watt a punching for back of the body part, particularly stretching and bending operation, described watt of back of the body body 81 selects low-carbon steel plate to make.Circular arc block 82, boss locating stud 83 and curved surface brake shoe nose 84 all by watt back of the body body 81 punching, stretch and be bent to form an entirety.
The process steps further illustrating powder metallurgy brake shoe below in conjunction with accompanying drawing is as follows:
(1) watt back member is processed:
The first, as shown in Figure 7, on punch press, go out watt length of back of the body body 81 and a wide profile with the first blanking of press tool according to design size;
Second step, watt back of the body body goes out brake shoe nose through hole and positioning hole;
Punch press goes out brake shoe nose through hole 85 and positioning hole 811 before bending brake shoe nose with mould simultaneously, brake shoe nose and positioning hole consistent size in brake shoe nose entire widths and height dimension and positioning hole diameter dimension and former brake shoe structure, for postorder bending operation is got ready, process watt back of the body part after brake shoe nose through hole 85 and positioning hole 811 as shown in Figure 8;
3rd step, stretched locating stud on watt back of the body body:
On punch press with stretching die by watt back of the body body 81 stretched cylindrical and a height boss consistent with life size, this boss is boss locating stud 83, watt carries on the back part as shown in Figure 9, Figure 10 after stretched boss locating stud 83;
4th step, stretched block on watt back of the body body:
On punch press with mould by watt circular arc block 82 that back of the body body 81 stretched width, radius of arc and height dimension are suitable; Process watt back of the body body 81 after boss locating stud 83 as shown in Figure 11, Figure 12;
5th step, watt back of the body body bends out brake shoe nose and watt back of the body arc surface
As shown in figure 13, the shape of the curved surface brake shoe nose 84 that punch press first bends with mould, then bend out the radius of arc size arc surface consistent with life size (carrying on the back size for existing watt).
(2) brake block is processed:
As shown in figure 14, on steel backing 6, width B 1 size is less than backboard 4 width dimensions B2, and three steel backing 6 length dimension overall lengths are less than carapace length size L2.Powder metallurgy powder to be poured in pressing mould die cavity into pressurization and the demoulding, obtains making friction piece 7, friction piece 7 is bundled on steel backing 6 and after being sintered by high temperature pressing, realizes friction piece 7 and connect with the sintering of steel backing 6, formation brake block;
(4) backboard is processed:
As shown in figure 15, on backboard part outer arc radius R1, length L2 and width B 2 size with former watt to carry on the back accessory size identical;
(4) watt back member will be processed weld with back of the body steel:
As shown in Figure 16, Figure 17, with welding fixture first fixing watt back member 8 in backboard 4 external arc, adopt automatic soldering method once to complete welding of watt back member 8 and backboard 4 along either direction backboard 4 one circle that detours, form and watt carry on the back an assembly;
(5) on watt back of the body assembly backboard, brake block is welded:
As shown in Figure 18, Figure 19, backboard Inner arc on watt back of the body assembly is first fixed the brake block in neutral position with welding fixture, fix left and right sides brake block again, on the two sides, steel backing left and right of neutral position brake block and both sides location brake block, steel backing contacts with each other gapless; Automatic soldering method is adopted to enclose along the brake block one that detours the welding once completing steel backing 6 backboard 4 on brake block along either direction.
(6) brake shoe rubbing surface inner arc surface is processed:
As shown in figure 20, vertical lathe disk fixes brake shoe with lathe fixture, by size requirement processing brake shoe rubbing surface radius of arc R3.
Claims (6)
1. a powder metallurgy brake shoe structure, comprise backboard (4), steel backing (6), friction piece (7) and watt back member (8), described backboard (4) is fixed in a watt back member (8) inner arc, described steel backing (6) is positioned in backboard (4) Inner arc, described friction piece (7) is fixed on steel backing (6), it is characterized in that: described watt of back member (8) is by watt back of the body body (81) and the circular arc block (82) that is separately positioned on watt back of the body body (81), boss locating stud (83) and curved surface brake shoe nose (84) composition, and circular arc block (82), boss locating stud (83) and curved surface brake shoe nose (84) are with watt to carry on the back body (81) as a whole.
2. a kind of powder metallurgy brake shoe structure according to claim 1, is characterized in that: described curved surface brake shoe nose (84) both sides also arrange brake shoe nose through hole (85).
3. a kind of powder metallurgy brake shoe structure according to claim 1, it is characterized in that: described curved surface brake shoe nose (84) is positioned at watt back of the body body (81) middle part, circular arc block (82) is arranged at watt back of the body body (81) two ends respectively, and symmetrical about the center line of curved surface brake shoe nose (84).
4. a kind of powder metallurgy brake shoe structure according to claim 1, it is characterized in that: between described boss locating stud (83) difference circle of position arc block (82) and curved surface brake shoe nose (84), and symmetrical about the center line of curved surface brake shoe nose (84).
5. a kind of powder metallurgy brake shoe structure according to claim 1, it is characterized in that: described watt of back of the body body (81) adopts be welded and fixed with backboard (4), and watt to carry on the back body (81) top-surface camber brake shoe nose (84) position everywhere connecting arc do not weld.
6. a kind of powder metallurgy brake shoe structure according to claim 1, is characterized in that: described watt of back of the body body (81) selects low-carbon steel plate to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520459049.3U CN205036761U (en) | 2015-06-30 | 2015-06-30 | Metallurgical brake shoe structure of powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520459049.3U CN205036761U (en) | 2015-06-30 | 2015-06-30 | Metallurgical brake shoe structure of powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205036761U true CN205036761U (en) | 2016-02-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520459049.3U Expired - Fee Related CN205036761U (en) | 2015-06-30 | 2015-06-30 | Metallurgical brake shoe structure of powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205036761U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963971A (en) * | 2015-06-30 | 2015-10-07 | 贵州新安航空机械有限责任公司 | Powder metallurgy brake shoe structure and machining method thereof |
| CN112705619A (en) * | 2021-01-21 | 2021-04-27 | 重庆市宇红轨道车辆配件有限公司 | Tile back automatic production line |
-
2015
- 2015-06-30 CN CN201520459049.3U patent/CN205036761U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963971A (en) * | 2015-06-30 | 2015-10-07 | 贵州新安航空机械有限责任公司 | Powder metallurgy brake shoe structure and machining method thereof |
| CN104963971B (en) * | 2015-06-30 | 2018-09-14 | 贵州新安航空机械有限责任公司 | A kind of powder metallurgy brake block structure and its processing method |
| CN112705619A (en) * | 2021-01-21 | 2021-04-27 | 重庆市宇红轨道车辆配件有限公司 | Tile back automatic production line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160217 |