CN220134484U - Piston for lightweight wedge-type air chamber - Google Patents
Piston for lightweight wedge-type air chamber Download PDFInfo
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- CN220134484U CN220134484U CN202223505572.4U CN202223505572U CN220134484U CN 220134484 U CN220134484 U CN 220134484U CN 202223505572 U CN202223505572 U CN 202223505572U CN 220134484 U CN220134484 U CN 220134484U
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- air chamber
- piston
- clamping
- lightweight
- chamber piston
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- 238000001746 injection moulding Methods 0.000 claims abstract description 18
- 239000002131 composite material Substances 0.000 claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 11
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 7
- 229910000838 Al alloy Inorganic materials 0.000 claims description 19
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- 238000005728 strengthening Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 19
- 230000008569 process Effects 0.000 abstract description 15
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 230000032683 aging Effects 0.000 abstract description 4
- 238000003754 machining Methods 0.000 description 13
- 238000004381 surface treatment Methods 0.000 description 7
- 230000003014 reinforcing effect Effects 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 3
- 238000009713 electroplating Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009740 moulding (composite fabrication) Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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Abstract
The utility model relates to the field of wedge brakes for trucks, and provides a piston for a lightweight wedge air chamber, which comprises a first body and a second body, wherein the first body is connected with the second body, and the first body and the second body are sleeved in a shell of the brake air chamber; the second body is made of a composite material containing a reinforcing agent and an anti-aging agent; the utility model solves the problem of heavy piston weight of the existing wedge brake chamber by changing the second body into a composite material containing the reinforcing agent and the anti-aging agent; the second body and the first body are molded into a whole through an injection molding process, so that the problems of high process difficulty of the existing wedge brake chamber piston and low production efficiency of the existing wedge brake chamber piston are solved; the second body is made of the composite material containing the reinforcing agent and the ageing resistant agent, and is formed by using an injection molding process, so that the cost of the composite material and the process is low, and the problem of high cost of the conventional wedge brake air chamber piston is solved.
Description
Technical Field
The utility model relates to the field of wedge brakes for trucks, in particular to a piston for a lightweight wedge air chamber.
Background
The wedge air chamber piston of the existing wedge brake is of an aluminum alloy or steel plate stamping structure, and is heavy and high in cost;
the difficulty of the production process of the aluminum alloy or the steel plate is great, such as the aluminum alloy: the required machining workload is large after the aluminum alloy piston is die-cast, the piston cylinder is required to be independently pressed after the machining is finished, and the cost of the aluminum alloy material is high; the steel plate stamping piston needs welding, machining, surface treatment and other working procedures after being stamped and stretched, the steel plate stamping piston needs multiple stamping and stretching, and the steel plate stamping piston has high specific gravity and heavy weight;
the raw material cost of the aluminum alloy piston is high, the process is complex, and the production efficiency is low; the steel plate stamping piston needs to be stamped, stretched, welded and machined and needs surface treatment, so that the processing cost is high and the environmental protection performance is poor.
Disclosure of Invention
The utility model provides a piston for a lightweight wedge-type air chamber, which solves the problem of heavy weight of the piston of the existing wedge-type brake air chamber by changing a second body into a composite material containing a reinforcing agent and an anti-aging agent; the second body and the first body are molded into a whole through an injection molding process, so that the process is simple, and the problem of high process difficulty of the existing wedge brake air chamber piston is solved; the method has the advantages that through injection molding, the process is simple, the molding speed is high, and the problem of low production efficiency of the existing wedge brake chamber piston is solved; the second body is made of the composite material containing the reinforcing agent and the ageing resistant agent, and the first body and the second body are integrally injection molded through injection molding, so that the cost of the composite material and the process flow is low, and the problem of high cost of the existing wedge brake air chamber piston is solved.
The technical scheme of the utility model is realized as follows:
a lightweight wedge air chamber piston comprising: the first body and the second body are connected with each other, and are sleeved in the shell of the brake air chamber;
the second body is made of a composite material containing a reinforcing agent and an anti-aging agent.
Further, the bottom of first body is provided with first connecting portion, be provided with the second connecting portion on the second body, first body with the second body is through first connecting portion with the cooperation interconnect of second connecting portion.
Further, the first connecting portion is a first clamping groove, the second connecting portion is a first clamping ring, and the first clamping ring is matched with the first clamping groove.
Further, one or more first clamping grooves are formed, and a second clamping ring is formed between every two of the first clamping grooves;
the first clamping rings are provided with one or more, a plurality of second clamping grooves are formed between every two of the first clamping rings, and the second clamping rings are matched with the second clamping grooves.
Further, the second body is buckled downwards, and a connecting body which is sunken downwards is arranged on the central shaft of the second body;
the inside of the connector is provided with a stepped hole with a large upper part and a small lower part;
the second connecting part is arranged in the large end of the stepped hole;
the small end of the stepped hole is a third connecting part, and the third connecting part is connected with the shell of the brake air chamber.
Further, a return spring is sleeved outside the connector.
The second body inner bottom is provided with a first limiting rib, and the first limiting rib stops rotating the return spring;
the second body inner bottom is provided with a positioning rib, and the positioning rib radially positions the return spring.
Further, a bolt pull rod is installed in the connector.
Further, the first body is made of aluminum alloy or steel, and the second body and the first body are connected into a whole through injection molding.
Further, the first body is connected with the housing of the brake chamber through a valve body sleeve.
Further, a plurality of second reinforcing ribs are arranged at the bottom of the inner side of the second body.
The utility model solves the problem of heavy piston weight of the existing wedge brake chamber by changing the second body into a composite material containing the reinforcing agent and the anti-aging agent; the second body and the first body are molded into a whole through an injection molding process, so that the process is simple, and the problem of high process difficulty of the existing wedge brake air chamber piston is solved; the method has the advantages that through injection molding, the process is simple, the molding speed is high, and the problem of low production efficiency of the existing wedge brake chamber piston is solved; the second body is made of the composite material containing the reinforcing agent and the ageing resistant agent, and the first body and the second body are integrally injection molded through injection molding, so that the cost of the composite material and the process flow is low, and the problem of high cost of the existing wedge brake air chamber piston is solved.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic perspective view of a piston for a lightweight wedge air chamber according to an embodiment of the present utility model;
FIG. 2 is a schematic view of another angular perspective of the piston for a lightweight wedge air chamber shown in FIG. 1;
FIG. 3 is a cross-sectional view of a lightweight wedge air chamber piston of the type shown in FIG. 1;
FIG. 4 is a cross-sectional view of a first body of the piston for a lightweight wedge air chamber shown in FIG. 3;
FIG. 5 is a cross-sectional view of a second body of the piston for a lightweight wedge air chamber shown in FIG. 3;
FIG. 6 is a half cross-sectional view of a use state of the piston for a lightweight wedge-type air chamber shown in FIG. 1;
reference numerals illustrate: a first body 1; a first body 11; a second snap ring 12; a second body 2; the second body 21; a second clamping groove 22; a connecting body 23; a stepped hole 231; a return spring 24; a first limit rib 25; positioning ribs 26.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In an embodiment of the present utility model, see fig. 1-6, a lightweight piston for a wedge-type air chamber, comprising: the brake device comprises a first body 1 and a second body 2, wherein the first body 1 is connected with the second body 2, and the first body 1 and the second body 2 are sleeved in a shell A of a brake chamber;
the second body 2 is made of a composite material containing a reinforcing agent and an anti-aging agent, and takes 45% reinforced nylon 66 as an example, the material performance indexes are as follows: tensile strength (MPa), density 1.53 (what unit is), heat distortion temperature 220 ℃, high rigidity; the aluminum alloy ADC12 has the following raw material properties: the tensile strength is 230MPa, the density is 2.7 (units), and the specific gravity is small;
the weight of the aluminum alloy or steel plate piston in the prior art is too large, the excessive weight can affect the weight reduction of the air chamber and even the whole vehicle, and the problem of large weight of the piston of the existing wedge brake air chamber is solved by carrying out material improvement on the second body;
meanwhile, the aluminum alloy piston has high raw material cost and high cost, and the production cost is effectively reduced by using the second body made of the composite material containing the reinforcing agent and the aging resistant agent.
In the embodiment of the present utility model, as shown in fig. 1 to 6, the bottom end of the first body 1 is provided with a first connecting portion 11, the second body 2 is provided with a second connecting portion 21, and the first body 11 and the second body 21 are connected with each other through cooperation of the first connecting portion 11 and the second connecting portion 21.
In an embodiment of the present utility model, as shown in fig. 1 to 6, the first connection portion 11 is a first clamping groove, and the second connection portion 21 is a first clamping ring, and the first clamping ring is matched with the first clamping groove.
In the embodiment of the present utility model, as shown in fig. 1 to 6, one or more first clamping grooves are provided, and a second clamping ring 12 is formed between every two of the plurality of first clamping grooves 11;
the first clamping rings are provided with one or more, a plurality of second clamping grooves 22 are formed between every two of the first clamping rings 21, and the second clamping rings are matched with the second clamping grooves.
In the embodiment of the present utility model, as shown in fig. 1 to 6, the second body 2 is snapped downward, and a connecting body 23 recessed downward is disposed on a central axis of the second body 2;
the inside of the connecting body 23 is provided with a stepped hole 231 with a large upper part and a small lower part;
the second connecting portion 21 is disposed in the large end of the stepped hole 231;
the small end of the stepped hole 231 is a third connection part, and the third connection part is connected with the housing of the brake chamber.
In the embodiment of the present utility model, referring to fig. 1-6, the outer portion of the connecting body 23 is sleeved with a return spring 24.
The inner bottom of the second body 2 is provided with a first limiting rib 25, and the first limiting rib 25 stops rotating the return spring 24;
the second body 2 is provided with a positioning rib 26 at the inner bottom, and the positioning rib 26 radially positions the return spring 24.
In the embodiment of the present utility model, referring to fig. 1 to 6, the bolt pull rod 3 is installed inside the connection body 23.
In the embodiment of the present utility model, as shown in fig. 1 to 6, the first body 1 is a first body made of aluminum alloy or steel, and the second body 2 and the first body 1 are integrally connected by injection molding;
the injection molding production process flow of the utility model is as follows: first, processing a first body, wherein the production flow of the first body is as follows: stretching, cutting, machining and forming and surface treatment of a steel pipe or an aluminum alloy pipe; then the second body and the first body are formed by injection molding;
the production process flow of the prior art is as follows: steel plate stamping piston: punching blanking, primary stretching, secondary stretching, mechanical processing, welding and electroplating; aluminum alloy piston: die casting, burr grinding, machining, press mounting of a piston cylinder and cleaning;
the aluminum alloy piston is manufactured through processes such as blank casting, machining, surface treatment, press fitting and the like, the process is complex, time and labor are wasted, the piston cylinder is required to be press fitted, the production efficiency is low, the machining efficiency is effectively improved through injection molding, and the problem of low production efficiency of the existing wedge brake air chamber piston is solved;
the steel plate stamping piston needs multiple stamping and stretching, the welding and machining processes are complex, surface treatment is needed, and the treatment cost is high;
meanwhile, the machining workload is large because of the machining needed after the aluminum alloy piston is die-cast, the piston cylinder needs to be singly pressed after the machining is finished, and the working procedures such as welding, machining, surface treatment and the like are needed after the steel plate stamping piston is stamped and stretched;
meanwhile, the existing steel plate stamping piston of the wedge brake chamber is manufactured by adopting processes such as stamping, machining, welding and the like, so that the steel plate stamping piston is heavy in weight, high in process cost, low in environmental protection performance, free of surface electroplating after injection molding, and more friendly to the environment.
In the specific embodiment of the present utility model, see fig. 1-6, the first body 1 is connected to the housing a of the brake chamber through a valve body sleeve 4.
In the embodiment of the present utility model, referring to fig. 1 to 6, the inner bottom of the second body 2 is provided with a plurality of second reinforcing ribs 27.
In the embodiment of the present utility model, referring to fig. 1 to 6, compared with the prior art in which the first body and the second body are both aluminum alloy pistons, the piston of the present utility model has the following advantages:
1. the piston is formed by adopting a high-strength and light-specific-gravity composite material; compared with the existing wedge-type air chamber front cover which is all made of aluminum alloy, the weight is reduced by about 40 percent; compared with a piston made of a steel plate by stamping, the weight is reduced by about 70 percent; the problem of heavy weight is effectively solved;
2. after injection molding, mechanical processing and surface treatment are not needed, and the manufacturability is good;
3. the injection molding technology is adopted, so that the production efficiency is improved by more than 5 times;
4. the guide ring is saved, and the structure is simple;
5. the cost is reduced by 50%;
6. the consistency of products is high through injection molding;
7. the consistency of the indexes such as size, strength and the like is high, and the yield is high.
In the specific embodiment of the utility model, as shown in fig. 1-6, the high-strength composite material has mechanical properties equivalent to those of aluminum alloy, and has better toughness and shock resistance; through CAE analysis, the wall thickness is reasonably increased, structures such as reinforcing ribs are added at key positions, for example, the first reinforcing ribs and the second reinforcing ribs, and the strength of the product is ensured to meet the practical requirements.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (8)
1. A lightweight wedge air chamber piston, characterized in that: the brake device comprises a first body and a second body, wherein the first body is connected with the second body, and the first body and the second body are sleeved in a shell of a brake air chamber;
the second body is made of a composite material containing a reinforcing agent and an anti-aging agent;
the bottom end of the first body is provided with a first connecting part, the second body is provided with a second connecting part, and the first body and the second body are mutually connected through the matching of the first connecting part and the second connecting part;
the first connecting portion is a first clamping groove, the second connecting portion is a first clamping ring, and the first clamping ring is matched with the first clamping groove.
2. A lightweight wedge air chamber piston as claimed in claim 1, wherein: one or more first clamping grooves are formed, and a second clamping ring is formed between every two of the first clamping grooves;
the first clamping rings are provided with one or more, a plurality of second clamping grooves are formed between every two of the first clamping rings, and the second clamping rings are matched with the second clamping grooves.
3. A lightweight wedge air chamber piston as claimed in claim 1, wherein: the second body is buckled downwards, and a connecting body which is sunken downwards is arranged on the central shaft of the second body;
the inside of the connector is provided with a stepped hole with a large upper part and a small lower part;
the second connecting part is arranged in the large end of the stepped hole;
the small end of the stepped hole is a third connecting part, and the third connecting part is connected with the shell of the brake air chamber.
4. A lightweight wedge air chamber piston as claimed in claim 3, wherein: a return spring is sleeved outside the connecting body;
the second body inner bottom is provided with a first limiting rib, and the first limiting rib stops rotating the return spring;
the second body inner bottom is provided with a positioning rib, and the positioning rib radially positions the return spring.
5. A lightweight wedge air chamber piston as claimed in claim 3, wherein: the bolt pull rod is arranged in the connector.
6. A lightweight wedge air chamber piston as claimed in claim 1, wherein: the first body is made of aluminum alloy or steel, and the second body and the first body are connected into a whole through injection molding.
7. A lightweight wedge air chamber piston as claimed in claim 3, wherein: the first body is connected with the shell of the brake chamber through a valve body sleeve group.
8. A lightweight wedge air chamber piston as claimed in claim 1, wherein: the inner side bottom of second body is provided with a plurality of second strengthening ribs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223505572.4U CN220134484U (en) | 2022-12-27 | 2022-12-27 | Piston for lightweight wedge-type air chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223505572.4U CN220134484U (en) | 2022-12-27 | 2022-12-27 | Piston for lightweight wedge-type air chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220134484U true CN220134484U (en) | 2023-12-05 |
Family
ID=88961925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223505572.4U Active CN220134484U (en) | 2022-12-27 | 2022-12-27 | Piston for lightweight wedge-type air chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220134484U (en) |
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2022
- 2022-12-27 CN CN202223505572.4U patent/CN220134484U/en active Active
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