CN205298345U - Truck braking system spring brake air chamber parking chamber piston - Google Patents

Truck braking system spring brake air chamber parking chamber piston Download PDF

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Publication number
CN205298345U
CN205298345U CN201521064325.2U CN201521064325U CN205298345U CN 205298345 U CN205298345 U CN 205298345U CN 201521064325 U CN201521064325 U CN 201521064325U CN 205298345 U CN205298345 U CN 205298345U
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China
Prior art keywords
piston
chamber
piston rod
spring brake
brake
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
Application number
CN201521064325.2U
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Chinese (zh)
Inventor
王�华
任王玮
杨卫华
王安芝
林苏
林苏一
高秀兵
张兆铭
赵聪
佘昌旺
欧腊英
王桂英
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WUHU SHENGLI TECHNOLOGY SHARES Co Ltd
Original Assignee
WUHU SHENGLI TECHNOLOGY SHARES Co Ltd
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Priority to CN201521064325.2U priority Critical patent/CN205298345U/en
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Publication of CN205298345U publication Critical patent/CN205298345U/en
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Abstract

The utility model discloses a truck braking system spring brake air chamber parking chamber piston, including piston body (1), piston rod (3), piston body (1) be the steel sheet through metal forming, piston body (1) and piston rod (3) adopt the interference fit fastening connection. Adopt above -mentioned technical scheme, adopt the piston of the piston replacement pack alloy of the fashioned method of spinning processing steel sheet, reduce the consumption of the material and the energy, reduce product cost, increased the intensity of product, make current product update, simultaneously, the reliability problem that the aluminum casting blowholes were brought has been eliminated effectively to the fashioned piston of steel sheet spinning.

Description

A kind of truck brake system spring brake chamber parking chamber piston
Technical field
This utility model belongs to the technical field of truck brake system actuator device. More specifically, this utility model relates to a kind of truck brake system spring brake chamber parking chamber piston.
Background technology
As depicted in figs. 1 and 2: existing diaphragm spring brake air chamber parking chamber piston body 1 is generally adopted aluminium diecasting, and shapes through machining, is then linked and packed with piston rod 3, relatively costly. And, because of sand holes inevitable in aluminium casting, air chamber gas leak phenomenon, the reliability of impact braking can be caused.
Utility model content
This utility model provides a kind of truck brake system spring brake chamber parking chamber piston, its objective is to reduce the material cost of product.
To achieve these goals, the technical scheme that this utility model is taked is:
Truck brake system spring brake chamber parking chamber of the present utility model piston, including piston body, piston rod, described piston body is the stamped shaping of sheet metal; Described piston body and piston rod adopt interference fit to be fastenedly connected.
The end cylindrical that described piston rod is connected with piston body arranges external thread structure, and by spinning mode, in the cavity of the piston body that press-in is described.
The cavity of described piston body is provided with the female thread structure matched with described piston rod external thread structure.
The part that described piston rod is connected with piston body adopts interference fit, and piston rod riveting enters and is pressed on seal washer in piston body groove and ensures sealing.
The section profile of tooth of described external thread structure and female thread structure is zigzag, forms the back-off preventing from getting loose mutually.
Between end face and the cavity of described piston body that described piston rod is connected with piston body, it is provided with seal washer.
Between described piston body and the interconnective surface of piston rod, it is provided with function of glue coating.
This utility model adopts technique scheme, adopts the piston of the method processing steel plate of rotary press modelling to replace the piston of pack alloy, reduces the consumption of material and the energy, reduce product cost, add the intensity of product, make existing model change;Meanwhile, the piston of steel plate rotary press modelling effectively eliminates the integrity problem that aluminium casting sand holes are brought.
Accompanying drawing explanation
Content shown in accompanying drawing and the labelling brief description in figure are as follows:
Fig. 1 is the diaphragm spring brake air chamber structural representation of prior art;
Fig. 2 is the attachment structure schematic diagram of piston only and piston rod in Fig. 1;
Fig. 3 is structural representation of the present utility model.
Figure is labeled as:
1, piston body, 2, seal washer, 3, piston rod.
Detailed description of the invention
Below against accompanying drawing, by the description to embodiment, detailed description of the invention of the present utility model is described in further detail, to help those skilled in the art that inventive concept of the present utility model, technical scheme are had more complete, accurate and deep understanding.
Structure of the present utility model as shown in Figure 3, for a kind of truck brake system spring brake chamber parking chamber piston, including piston body 1, piston rod 3. This truck brake system spring brake chamber is diaphragm spring brake air chamber.
Annexation: diaphragm spring brake air chamber is bolted in vehicle bridge air chamber mounting bracket by installation, push rod fork and adjustment arm connection realize to brake power output to be braked.
In order to solve prior art Problems existing and overcome its defect, it is achieved reducing the goal of the invention of the material cost of product, the technical scheme that this utility model is taked is:
As it is shown on figure 3, truck brake system spring brake chamber parking chamber of the present utility model piston, described piston body 1 is the stamped shaping of sheet metal; Described piston body 1 adopts interference fit to be fastenedly connected with piston rod 3.
This product adopts the piston body of the method processing steel plate of rotary press modelling to replace the piston body of pack alloy, reduces consumptive material and the cost of product, adds the intensity of product simultaneously. By energy storage piston only by being machined out molding after aluminium casting die casting again, after being improved to employing sheet metal punching press intermediate groove, rotary pressure technology is adopted to screw water jacket again. Spinning steel plate piston main body structure after improvement is identical with aluminium alloy, but cost is substantially reduced. Effectively eliminate the air chamber gas leak phenomenon because aluminium casting sand holes cause because employing steel plate is processed into piston simultaneously, improve the reliability of product.
The end cylindrical that described piston rod 3 is connected with piston body 1 arranges external thread structure, and by spinning mode, in the cavity of the piston body 1 that press-in is described.
Reduce the use of material to reduce product cost, up-to-date rotary pressure technology is applied in the manufacture of air chamber piston by this utility model, makes existing model change, reduces cost, energy efficient.
The cavity of described piston body 1 is provided with the female thread structure matched with described piston rod 3 external thread structure. Owing to adopting the structure of threaded engagement, what make that both are engaged is tighter, and then makes product more tight what axially connect, the problem that will not produce to get loose.
The part that described piston rod 3 is connected with piston body 1 adopts interference fit, and piston rod 3 riveted enters and is pressed on seal washer 2 in piston body 1 groove and ensures sealing.
The section profile of tooth of described external thread structure and female thread structure is zigzag, forms the back-off preventing from getting loose mutually. Zigzag cooperation makes both prevent the better effects if got loose.
Between end face and the cavity of described piston body 1 that described piston rod 3 is connected with piston body 1, it is provided with seal washer 2. Seal washer 2 makes two chambeies in brake chamber parking chamber completely cut off completely, will not produce leakage, affect product quality.
Between described piston body 1 and the interconnective surface of piston rod 3, it is provided with function of glue coating.The purpose increasing function of glue coating is to improve bonding strength further.
Described piston body 1 cylindrical assembling guide collar and y-shaped ring groove are sheet metal rotary press modelling, it is ensured that piston only edge thickness is constant, has only enough grooves for fixed guide circle and y-shaped ring simultaneously. Sheet metal spinning structure is adopted can effectively to save material.
Reduce the use of material to reduce product cost, up-to-date rotary pressure technology is applied in the manufacture of air chamber piston by this utility model, makes existing model change, reduces cost, energy efficient.
Static position relation of the present utility model:
Guide collar and sealing ring play guiding and sealing function between cylinder body and piston only. Guide collar and sealing ring carry out leading and sealing between piston rod connects and covers. Energy storage piston is spun together by piston only and piston rod thread, and seal washer is compressed by piston rod, rises and seals and booster action.
Dynamic position relation of the present utility model:
When vehicle is when stopping, put down hands valve, the air pressure aerofluxus of parking chamber. Energy storage piston travels forward under the effect of energy-stored spring and promotes push rod output brake weight. Piston assembly is sealed and leads by sealing ring and guide collar.
When the vehicle is running, pull-up hands valve parking chamber inflation. Energy storage piston overcomes spring force rearward movement under the influence of air pressure, releases brake force. Piston assembly is led and ensures that parking chamber seals by guide collar and sealing ring.
When vehicle steps on service brake, the inflation of driving chamber in the process of moving, sealing ring ensures that driving seals.
Operation principle of the present utility model:
Hands valve controls diaphragm spring brake air chamber parking chamber air intake-exhaust, and energy storage piston in parking chamber seesaws, and push rod exports and releases brake force. Foot valve controls diaphragm spring brake air chamber driving chamber air intake-exhaust, and driving chamber diaphragm promotes push rod output and releases brake force.
Above in conjunction with accompanying drawing, this utility model is exemplarily described; obvious this utility model implements and is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present utility model design carries out with technical scheme; or not improved design of the present utility model and technical scheme are directly applied to other occasion, all within protection domain of the present utility model.

Claims (6)

1. a truck brake system spring brake chamber parking chamber piston, including piston body (1), piston rod (3), it is characterised in that: described piston body (1) is the stamped shaping of sheet metal; Described piston body (1) and piston rod (3) adopt interference fit to be fastenedly connected.
2. the truck brake system spring brake chamber parking chamber piston described in claim 1, it is characterized in that: the end cylindrical that described piston rod (3) is connected with piston body (1) arranges external thread structure, and by spinning mode, in the cavity of the piston body (1) that press-in is described.
3. the truck brake system spring brake chamber parking chamber piston described in claim 2, it is characterised in that: the cavity of described piston body (1) is provided with the female thread structure matched with described piston rod (3) external thread structure.
4. the truck brake system spring brake chamber parking chamber piston described in claim 3, it is characterized in that: the part that described piston rod (3) is connected with piston body (1) adopts interference fit, piston rod (3) riveted enters and is pressed on seal washer (2) in piston body (1) groove and ensures sealing.
5. the truck brake system spring brake chamber parking chamber piston described in claim 1, it is characterized in that: between end face and the cavity of described piston body (1) that described piston rod (3) is connected with piston body (1), be provided with seal washer (2).
6. the truck brake system spring brake chamber parking chamber piston described in claim 1, it is characterised in that: between described piston body (1) and piston rod (3) interconnective surface, it is provided with function of glue coating.
CN201521064325.2U 2015-12-17 2015-12-17 Truck braking system spring brake air chamber parking chamber piston Active CN205298345U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201521064325.2U CN205298345U (en) 2015-12-17 2015-12-17 Truck braking system spring brake air chamber parking chamber piston

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201521064325.2U CN205298345U (en) 2015-12-17 2015-12-17 Truck braking system spring brake air chamber parking chamber piston

Publications (1)

Publication Number Publication Date
CN205298345U true CN205298345U (en) 2016-06-08

Family

ID=56470764

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201521064325.2U Active CN205298345U (en) 2015-12-17 2015-12-17 Truck braking system spring brake air chamber parking chamber piston

Country Status (1)

Country Link
CN (1) CN205298345U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105387102A (en) * 2015-12-17 2016-03-09 芜湖盛力科技股份有限公司 Piston of spring brake air chamber parking cavity of truck braking system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105387102A (en) * 2015-12-17 2016-03-09 芜湖盛力科技股份有限公司 Piston of spring brake air chamber parking cavity of truck braking system

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