CN117515071A - Integrated hub brake drum assembly - Google Patents
Integrated hub brake drum assembly Download PDFInfo
- Publication number
- CN117515071A CN117515071A CN202410023829.7A CN202410023829A CN117515071A CN 117515071 A CN117515071 A CN 117515071A CN 202410023829 A CN202410023829 A CN 202410023829A CN 117515071 A CN117515071 A CN 117515071A
- Authority
- CN
- China
- Prior art keywords
- brake drum
- brake
- hub
- drum body
- sealing ring
- 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.)
- Granted
Links
- 239000000110 cooling liquid Substances 0.000 claims abstract description 33
- 238000007789 sealing Methods 0.000 claims abstract description 24
- 230000017525 heat dissipation Effects 0.000 claims abstract description 22
- 230000003014 reinforcing effect Effects 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 229910001060 Gray iron Inorganic materials 0.000 claims description 4
- 229910001141 Ductile iron Inorganic materials 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 description 5
- 239000000047 product Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000012780 transparent material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009750 centrifugal casting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
The invention discloses an integrated hub brake drum assembly which comprises a hub body and a brake drum body, wherein the hub body and the brake drum body are integrally formed, a plurality of arc brake lining plates arrayed along the circumference of the inner wall of the brake circumference of the brake drum body are detachably fixed on the inner wall of the brake circumference of the brake drum body, a cooling liquid groove is formed in the brake circumference, a sealing ring is mounted at the inner port of the brake drum body, the sealing ring seals the cooling liquid groove, an air valve and an observation window are formed in the sealing ring, and a plurality of heat dissipation fins are arranged on the outer circumferential wall of the hub body. Compared with the traditional split type manufacturing and reassembling of the brake drum and the hub, the integrated hub brake drum assembly reduces the assembly process, reduces the manufacturing time, reduces the process cost, is convenient to maintain, has low maintenance cost, dissipates heat quickly, and reduces the failure rate.
Description
Technical Field
The invention belongs to the technical field of automobile parts, and particularly relates to an integrated hub brake drum assembly.
Background
The conventional commercial vehicle hub and brake drum are cast and machined separately, and the hub and brake drum are typically secured using a bolted connection. As shown in fig. 1, the brake drum 100 includes a connection end 1001 for connection with a hub and a brake circumferential portion 1002 for engagement with a brake shoe (not shown); the hub 200 is provided with a positioning table 2001 and a flange 2002, and the positioning table 2001 is located on one side of the flange 2002. The mounting and positioning of the brake drum 100 is engaged with the positioning stage 2001 of the hub 200 by the inner hole of the connecting end 1001. The structure of the positioning and matching of the hub 200 and the brake drum 100 has the following disadvantages:
1) The hub 200 and the brake drum 100 are connected and installed through bolts, so that the assembly is large in size, heavy in weight and high in cost; if the product space layout is compact, the assembly of the parts is poor, the heat dissipation of the brake drum 100 and the hub 200 is poor, and the service life of the parts is affected.
2) Because the braking function is realized through frictional resistance between the inner surface (also called a brake drum braking surface) at the braking circumference 1002 and the brake pad, the phenomenon of cracking and cracking easily occurs at the brake drum braking surface, braking failure is easy to cause, and when the braking failure occurs, the brake drum needs to be replaced integrally, and the cost is high.
3) The stress concentration of the connection end 1001 is large, so that one side of the connection end 1001 close to the brake circumference portion 1002 (i.e., the inner side of the connection end 1001) receives large tensile stress, and one side of the connection end 1001 far away from the brake circumference portion 1002 (i.e., the outer side of the connection end 1001) receives large compressive stress.
4) In the prior art, some of the brake drums are made of bimetal, most of the bimetal brake drums are manufactured by adopting a mode of steel plate blanking spot welding shells and centrifugal casting, the process is complex, and the whole product needs to be replaced after failure. Also, gray iron brake drums are used, which have insufficient strength and rigidity.
Disclosure of Invention
In order to overcome the defects in the prior art, the technical problem to be solved by the invention is to provide the integrated hub brake drum assembly, which can reduce the assembly process and the manufacturing time, is convenient to maintain and low in maintenance cost, and simultaneously has the advantages of fast heat dissipation and fault rate reduction.
In order to solve the technical problems, the invention adopts the following technical scheme:
integral type wheel hub brake drum assembly, including wheel hub body and brake drum body, its characterized in that:
the hub body and the brake drum body are integrally formed,
a plurality of arc brake lining plates arrayed along the circumferential direction of the inner wall of the brake circumferential part of the brake drum body are detachably fixed on the inner wall of the brake circumferential part of the brake drum body, a cooling liquid groove is arranged on the brake circumferential part of the brake drum body, a sealing ring is arranged at the inner end of the brake drum body, the sealing ring seals the cooling liquid groove, an air valve and an observation window are arranged at the sealing ring,
and a plurality of radiating fins are arranged on the peripheral wall of the hub body.
Preferably, a plurality of cylindrical convex peaks are uniformly distributed on the periphery of the hub body at intervals, an inner valley is formed between two adjacent cylindrical convex peaks, the heat dissipation fins are fixed at the inner valley, and the radial height of the heat dissipation fins is lower than that of the cylindrical convex peaks.
Preferably, the hub body is provided with a plurality of supporting lugs and a plurality of reinforcing ribs, the supporting lugs and the reinforcing ribs are in one-to-one correspondence and are connected with each other, and the reinforcing ribs are located at the inner valleys.
Preferably, the arc brake lining plates are provided with four blocks, and the four blocks of arc brake lining plates are sequentially arranged along the inner wall of the braking circumference part.
Preferably, the joint surface of the arc brake lining plate and the brake drum body is a conical inclined surface.
Preferably, the arc brake lining plate is fixedly connected with the brake circumference of the brake drum body through rivets.
Preferably, the hub body and the brake drum body which are integrally formed are cast by ductile iron, and the arc brake lining plate is manufactured by gray iron.
Preferably, a joint of the brake drum body and the hub body is provided with a common connecting disc, and a plurality of bolt mounting holes are formed in the common connecting disc and are circumferentially arrayed around the central axis of the brake drum body.
After the technical scheme is adopted, the invention has the beneficial effects that:
the integrated hub brake drum assembly comprises a hub body and a brake drum body, wherein the hub body and the brake drum body are integrally formed, so that the assembly process is reduced, the manufacturing time is shortened, and the process cost is reduced.
The inner wall of the braking circumference part of the braking drum body is detachably fixed with a plurality of arc-shaped braking lining plates which are arrayed along the circumference direction of the braking drum body, when certain arc-shaped braking lining plates are worn excessively, the braking drum can be replaced in a targeted mode, and the braking drum can be replaced locally without integrally eliminating the integral hub braking drum assembly, so that the cost is saved.
The brake circumference is provided with a cooling liquid groove, the inner port of the brake drum body is provided with a sealing ring, the sealing ring seals the cooling liquid groove, and the sealing ring is provided with an air valve and an observation window. The cooling liquid tank is filled with cooling liquid, and the cooling liquid absorbs heat, so that the heat dissipation speed of the heat generated during braking of the brake drum is increased. The sealing ring not only can play the effect of preventing the coolant from leaking outwards, but also can timely discharge the air in the coolant tank, so that the sealing ring is prevented from being invalid due to overlarge pressure. On the other hand, the sealing ring can be better connected with the arc brake lining plate and the brake drum body, and dirt is prevented from entering between the joint surfaces of the arc brake lining plate and the brake drum body. The observation window is preferably made of transparent materials, so that the condition of the liquid level of the cooling liquid can be observed, and when the condition that the cooling liquid is too small is observed, the liquid needs to be timely replenished.
A plurality of heat dissipation fins are arranged on the peripheral wall of the hub body. On the one hand, the heat dissipation area is increased, and the heat dissipation speed is accelerated. On the other hand, the plurality of radiating fins can rotate along with the integrated hub brake drum assembly to simulate a rotating fan, so that air flow is accelerated, and the hub body part is enabled to radiate heat rapidly. Therefore, the heat dissipation speed is high, and the occurrence of cracks or deformation of the integrated hub brake drum assembly caused by uneven heat dissipation is avoided.
In summary, compared with the traditional brake drum and hub split type manufacturing and reassembling, the integrated hub brake drum assembly provided by the invention has the advantages that the assembly process is reduced, the manufacturing time is shortened, the process cost is reduced, the maintenance is convenient, the maintenance cost is low, the heat dissipation is fast, and the failure rate is reduced.
Drawings
FIG. 1 is a schematic illustration of an assembled construction of a prior art hub and brake drum;
FIG. 2 is a schematic structural view of the integrated hub brake drum assembly of the present invention;
FIG. 3 is a schematic front view of the integrated hub brake drum assembly of FIG. 2;
FIG. 4 is a schematic cross-sectional view at A-A in FIG. 3;
FIG. 5 is a schematic cross-sectional view at B-B in FIG. 3;
FIG. 6 is a right side schematic view of FIG. 3;
fig. 7 is an exploded view of fig. 2.
In the figure: 100. a brake drum; 1001. a connecting end; 1002. a braking circumferential portion; 200. a hub; 2001. a positioning table; 2002. a flange plate; 1. a hub body; 101. radiating fins; 102. cylindrical peaks; 103. an inner valley; 104. supporting the bump; 105. reinforcing ribs; 2. a brake drum body; 20. sharing a connecting disc; 201. a cooling liquid tank; 202. a connection hole; 203. a bolt mounting hole; 204. a circular arc transition portion; 3. an arc brake lining plate; 4. a seal ring; 401. installing a valve hole; 402. and a viewing window.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples.
On a vehicle we have the direction of the two wheels on one axle towards the outside of the vehicle as the "outer end" and the direction between the two wheels as the "inner end".
An integrated hub brake drum assembly as shown collectively in fig. 2-7, comprising: the hub body 1 and the brake drum body 2, the hub body 1 and the brake drum body 2 are integrally formed, a plurality of arc brake lining plates 3 which are arrayed along the circumference of the inner wall of a brake circumference portion 1002 of the brake drum body 2 are detachably fixed, the brake circumference portion 1002 is provided with a cooling liquid groove 201, and an opening of the cooling liquid groove 201 is formed in the end face of the brake drum body 2. As shown in fig. 4 and 5, the length of the cooling liquid tank 201 in the axial direction in the present invention is related to the effective braking surface, which is the braking surface on the brake drum body 2 that contacts the brake pad. The integrated hub brake drum assembly is provided with the cooling liquid tank 201, cooling liquid is filled in the cooling liquid tank 201, and the cooling liquid absorbs heat, so that the heat dissipation speed of the heat generated during braking of the brake drum is increased.
As shown in fig. 5 and 6, a sealing ring 4 is mounted at the inner end of the brake drum body 2, the sealing ring 4 seals the cooling liquid tank 201, an air valve and an observation window 402 are provided at the sealing ring 4, the air valve only allows gas to pass through and does not allow liquid to pass through, and a mounting valve hole 401 for mounting the air valve is provided on the sealing ring 4. The sealing ring 4 not only can play a role in preventing the leakage of the cooling liquid, but also can timely discharge the air in the cooling liquid tank 201, and prevent the sealing failure caused by overlarge pressure of the sealing ring 4. On the other hand, the sealing ring 4 can be better connected with the arc brake lining plate 3 and the brake drum body 2, so that dirt is prevented from entering between the joint surfaces of the arc brake lining plate and the brake drum body. The observation window 402 is preferably made of transparent material, so that the liquid level of the cooling liquid can be observed, and when the cooling liquid is observed to be too small, the cooling liquid needs to be timely replenished.
The air valve is arranged on the sealing ring 4, so that the pressure in the cooling liquid tank 201 can be regulated, when the brake drum body 2 generates heat in a friction way, the cooling liquid in the cooling liquid tank 201 is heated to generate gas, the pressure is overlarge, the air valve can enable the gas to escape, and the pressure in the cooling liquid tank 201 is regulated. In addition, the observation window 402 can observe the liquid level of the cooling liquid and timely supplement the cooling liquid.
As shown in fig. 2, a plurality of heat dissipation fins 101 are provided on the outer peripheral wall of the hub body 1. On the one hand, the heat dissipation area is increased, and the heat dissipation speed is accelerated. On the other hand, the plurality of heat dissipation fins 101 can rotate along with the integrated hub brake drum assembly to simulate a rotating fan, so that air flow is accelerated, and further, the hub body 1 can dissipate heat rapidly.
In some embodiments, as shown in fig. 7, a plurality of cylindrical peaks 102 are uniformly distributed on the outer circumference of the hub body 1 at intervals, an inner valley 103 is formed between two adjacent cylindrical peaks 102, and the heat dissipation fins 101 are fixed at the inner valley 103, and the height of the heat dissipation fins 101 in the radial direction is lower than that of the cylindrical peaks 102.
The hub body 1 is provided with a plurality of supporting lugs 104 and a plurality of reinforcing ribs 105, the supporting lugs 104 and the reinforcing ribs 105 are in one-to-one correspondence and are connected with each other, and the reinforcing ribs 105 are positioned at the inner valleys 103. The arrangement of the reinforcing ribs 105 not only can improve the structural strength of the inner valley 103, but also can effectively disperse the stress of the bearing chamber, lighten the concentration of the stress, and further improve the bearing capacity of the hub body 1 so as to improve the overall strength of the hub body 1.
As shown in fig. 5, the joint surface of the arc brake lining plate 3 and the brake drum body 2 is a conical inclined surface. So that the connection and the lamination of the arc brake lining plate 3 and the brake drum body 2 are more compact.
As shown in fig. 7, the arc brake lining plates 3 are provided with four pieces, and the four pieces of arc brake lining plates 3 are sequentially arranged along the inner wall of the brake circumference portion 1002.
In some embodiments, the arcuate brake lining 3 is fixedly attached to the brake circumferential portion 1002 of the brake drum body 2 by rivets. As shown in fig. 7, a plurality of connecting holes 202 are correspondingly formed in the arc brake lining plate 3 and the brake drum body 2, and rivets penetrate through the connecting holes 202 to fixedly connect the arc brake lining plate 3 and the brake drum body 2. When certain arc brake lining plate is excessively worn, the arc brake lining plate can be replaced in a targeted mode, namely, the arc brake lining plate can be replaced locally, the integral hub brake drum assembly is not required to be eliminated integrally, and the cost is saved.
The hub body 1 and the brake drum body 2 which are integrally formed are cast by ductile iron, the arc brake lining plate 3 is manufactured by gray iron, the strength and the rigidity of the hub body 1 and the brake drum body 2 are high due to the structure, the wear resistance of the arc brake lining plate 3 is good, the comprehensive performance of a product is improved, the whole service life is prolonged, and the failure probability is reduced.
As shown in fig. 2, a common connection disc 20 is provided at a connection portion between the brake drum body 2 and the hub body 1, and a plurality of bolt mounting holes 203 are provided on the common connection disc 20, and the plurality of bolt mounting holes 203 are circumferentially arrayed around a central axis of the brake drum body 2. Further, the portion of the common land 20 connected to the brake circumferential portion 1002 of the brake drum body 2 is provided as the arcuate transition portion 204, so that stress concentration can be reduced. The structure where the brake drum body 2 and the hub body 1 are connected is higher than the structure strength of the connecting end portion 1001 of the conventional brake drum in fig. 1, and the structure strength of the connecting end portion 1001 is reduced since the connecting end portion 1001 is provided with a center mounting hole adapted to the positioning stage 2001 of the hub 200. The common connecting disc 20 is of an integrated structure, so that the structural strength is high, the force applied to the position of the common connecting disc 20 is uniformly dispersed to the periphery along the radial direction of the common connecting disc, and the stress concentration is avoided by the arc transition part 204, so that the brake drum body 2 and the hub body 1 are connected through the common connecting disc 20, and the occurrence of cracks of the traditional brake drum body 2 from the inner hole of the connecting end 1001 is avoided, and the bottom falling fault is avoided.
According to the invention, the brake drum body and the hub body are cast integrally, so that the assembly process is reduced, the manufacturing time is shortened, the process cost is reduced, the arc brake lining plate is detachably fixed on the brake drum body, the maintenance is convenient, the maintenance cost is low, the heat dissipation is fast, and the failure rate is reduced.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (8)
1. Integral type wheel hub brake drum assembly, including wheel hub body and brake drum body, its characterized in that:
the hub body and the brake drum body are integrally formed,
a plurality of arc brake lining plates arrayed along the circumferential direction of the inner wall of the brake circumferential part of the brake drum body are detachably fixed on the inner wall of the brake circumferential part of the brake drum body, a cooling liquid groove is arranged on the brake circumferential part of the brake drum body, a sealing ring is arranged at the inner end of the brake drum body, the sealing ring seals the cooling liquid groove, an air valve and an observation window are arranged at the sealing ring,
and a plurality of radiating fins are arranged on the peripheral wall of the hub body.
2. The integrated hub brake drum assembly of claim 1, wherein a plurality of cylindrical peaks are uniformly distributed on the periphery of the hub body at intervals, an inner valley is formed between two adjacent cylindrical peaks, the heat dissipation fins are fixed at the inner valley, and the height of the heat dissipation fins in the radial direction is lower than that of the cylindrical peaks.
3. The integrated hub brake drum assembly of claim 2, wherein the hub body is provided with a plurality of support lugs and a plurality of reinforcing ribs, the support lugs and the reinforcing ribs being in one-to-one correspondence and being connected to each other, the reinforcing ribs being located at the inner valleys.
4. The integrated hub brake drum assembly of claim 1, wherein said arcuate brake lining is provided with four said arcuate brake lining plates arranged in sequence along said brake periphery inner wall.
5. The integrated hub brake drum assembly of claim 1, wherein the arcuate brake lining and the brake drum body interface is a tapered bevel.
6. The integrated hub brake drum assembly of claim 1, wherein said arcuate brake lining is fixedly attached to said brake peripheral portion of said brake drum body by rivets.
7. The integrated hub-brake drum assembly of claim 1, wherein the integrally formed hub body and brake drum body are cast from ductile iron and the arcuate brake lining is made from gray iron.
8. The integrated hub brake drum assembly of claim 1, wherein a common connection pad is provided at a junction of the brake drum body and the hub body, the common connection pad having a plurality of bolt mounting holes formed therein, the plurality of bolt mounting holes being circumferentially arrayed about a central axis of the brake drum body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410023829.7A CN117515071B (en) | 2024-01-08 | Integrated hub brake drum assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410023829.7A CN117515071B (en) | 2024-01-08 | Integrated hub brake drum assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117515071A true CN117515071A (en) | 2024-02-06 |
| CN117515071B CN117515071B (en) | 2024-04-19 |
Family
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85109559A (en) * | 1984-10-31 | 1986-06-10 | 罗托克利安工业公司 | Multistage rotary dust collector |
| CN101293516A (en) * | 2008-04-23 | 2008-10-29 | 张春 | Water-cooled vehicle brake |
| US20090087299A1 (en) * | 2007-10-02 | 2009-04-02 | Agrawal Giridhari L | Foil gas bearing supported high temperature centrifugal blower and method for cooling thereof |
| CN202038295U (en) * | 2011-05-12 | 2011-11-16 | 皮俊洲 | Fully automatic cooling water circulation brake cooling device |
| CN102951010A (en) * | 2011-08-12 | 2013-03-06 | 电子牵引欧洲有限公司 | In-wheel motor with brake |
| CN105730139A (en) * | 2014-12-26 | 2016-07-06 | 本田技研工业株式会社 | Wheel and motorcycle |
| CN214578482U (en) * | 2020-12-09 | 2021-11-02 | 华翔集团翼城新材料科技园有限公司 | High-efficient cooling brake drum |
| CN214617603U (en) * | 2021-04-11 | 2021-11-05 | 河北振东制动器有限公司 | Double-connecting-wheel brake drum device |
| CN115055649A (en) * | 2022-06-20 | 2022-09-16 | 山西汤荣机械制造股份有限公司 | Integrated composite brake drum wheel hub casting product and preparation method thereof |
| CN220185667U (en) * | 2023-07-03 | 2023-12-15 | 玉溪云庆行科技有限公司 | Fluid circulation heat dissipation brake drum |
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85109559A (en) * | 1984-10-31 | 1986-06-10 | 罗托克利安工业公司 | Multistage rotary dust collector |
| US20090087299A1 (en) * | 2007-10-02 | 2009-04-02 | Agrawal Giridhari L | Foil gas bearing supported high temperature centrifugal blower and method for cooling thereof |
| CN101293516A (en) * | 2008-04-23 | 2008-10-29 | 张春 | Water-cooled vehicle brake |
| CN202038295U (en) * | 2011-05-12 | 2011-11-16 | 皮俊洲 | Fully automatic cooling water circulation brake cooling device |
| CN102951010A (en) * | 2011-08-12 | 2013-03-06 | 电子牵引欧洲有限公司 | In-wheel motor with brake |
| CN105730139A (en) * | 2014-12-26 | 2016-07-06 | 本田技研工业株式会社 | Wheel and motorcycle |
| CN214578482U (en) * | 2020-12-09 | 2021-11-02 | 华翔集团翼城新材料科技园有限公司 | High-efficient cooling brake drum |
| CN214617603U (en) * | 2021-04-11 | 2021-11-05 | 河北振东制动器有限公司 | Double-connecting-wheel brake drum device |
| CN115055649A (en) * | 2022-06-20 | 2022-09-16 | 山西汤荣机械制造股份有限公司 | Integrated composite brake drum wheel hub casting product and preparation method thereof |
| CN220185667U (en) * | 2023-07-03 | 2023-12-15 | 玉溪云庆行科技有限公司 | Fluid circulation heat dissipation brake drum |
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