CN203702477U - Air booster pump of engineering mechanical braking system - Google Patents
Air booster pump of engineering mechanical braking system Download PDFInfo
- Publication number
- CN203702477U CN203702477U CN201320874888.2U CN201320874888U CN203702477U CN 203702477 U CN203702477 U CN 203702477U CN 201320874888 U CN201320874888 U CN 201320874888U CN 203702477 U CN203702477 U CN 203702477U
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- CN
- China
- Prior art keywords
- cylinder
- push rod
- assembly
- connecting cover
- braking system
- 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.)
- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 239000000428 dust Substances 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 3
- 239000010985 leather Substances 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
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- Actuator (AREA)
Abstract
The utility model discloses an air booster pump of an engineering mechanical braking system. The air booster pump of the engineering mechanical braking system comprises a cylinder shell, a cylinder piston, a push rod, a connecting cover, a valve assembly, a hydraulic piston assembly and a hydraulic cylinder, wherein the cylinder shell and the connecting cover form a cylinder assembly; the hydraulic piston assembly is arranged in the hydraulic cylinder; the cylinder piston is arranged in an inner cavity of the cylinder assembly; one end of the push rod end is connected to the cylinder piston in a fastening way, and the other end of the push rod penetrates through a central hole of the connecting cover and is connected to the hydraulic piston assembly; a Y-shaped seal ring and a dustproof ring are adopted to seal the connecting cover and the push rod. By adopting the technical scheme, the seal way between the connecting cover and the push rod is changed, the Y-shaped ring, a guide sleeve and the dustproof ring are used for sealing, the guide sleeve is added to support the push rod, wear of a gas piston leather collar and the Y-shaped ring is reduced, and thus the product reliability is enhanced; the connection between the hydraulic piston and the push rod is changed into the cylindrical pin connection, the connection reliability is improved, and thus the service life of the product is prolonged.
Description
Technical field
The utility model belongs to the technical field of braking system of engineering machinery.Specifically, the utility model relates to a kind of air boost pump of engineering mechanical braking system.
Background technique
As shown in Figure 1, in the prior art, the sealing between air boosting pump connecting cover and push rod that braking system of engineering machinery is used, employing be the combination of central seal circle and O-ring seals, the sealing tooth of central seal circle is easily worn, and causes product leakage of oil; Push rod is connected with back-up ring by hole with hydraulic piston, and back-up ring easily comes off, and causes product failure; The sealing of ram seat assembly forward, when product return, instantaneous pressure oil impact rubber causes it aging, damaged, causes brake failure.
Model utility content
The utility model provides a kind of air boost pump of engineering mechanical braking system, its objective is the reliability that improves product.
To achieve these goals, the technological scheme that the utility model is taked is:
Air boost pump of engineering mechanical braking system of the present utility model, comprises cylinder shell, cylinder piston, push rod, connecting cover, valve assembly, hydraulic piston assembly, hydraulic cylinder; Described cylinder shell and connecting cover form cylinder assembly; Described hydraulic piston assembly is located in hydraulic cylinder; Described cylinder piston is located in the inner chamber of cylinder assembly; Described push rod one end and cylinder piston are fastenedly connected, and the other end, through the center hole of described connecting cover, is connected with described hydraulic piston assembly; Between described connecting cover and push rod, adopt y-shaped ring and dust ring sealing.
Between described y-shaped ring and dust ring, be provided with guide sleeve, described guide sleeve is enclosed within on described push rod.
Described hydraulic piston assembly is connected with push rod by straight pin.
It is to be connected by thread belt glue that described push rod is fastenedly connected with cylinder piston.
Between described connecting cover and hydraulic cylinder, adopt O-ring seals sealing.
Described valve assembly is fixed on the bottom surface of hydraulic piston assembly by Steel Cable Baffle Ring.
Between described cylinder piston and connecting cover, establish return spring; Under the effect of described return spring, described push rod is thrown off ram seat and valve assembly sealing surface, makes in hydraulic piston assembly aperture unimpeded, and brake fluid enters oil hydraulic cylinder inner chamber by aperture.
The utility model adopts technique scheme, changes the sealing means between connecting cover and push rod, seals with Y shape circle, guide sleeve, dust ring, increases guide sleeve push rod is supported, and reduces the eccentric wear of gas piston apron and Y shape circle, improves product reliability; Connect changing liquid piston and being connected of push rod straight pin into, connect the high reliability connecting, thus the working life of improving product.
Brief description of the drawings
Below the mark in the each width accompanying drawing of this specification expressed content and figure is briefly described:
Fig. 1 is the structural representation of prior art;
Fig. 2 is structural representation of the present utility model.
In figure, be labeled as:
1, cylinder shell, 2, gas piston apron, 3, cylinder piston, 4, return spring, 5, push rod, 6, dust ring, 7, guide sleeve, 8, connecting cover, 9, y-shaped ring, 10, spring, 11, straight pin, 12, valve assembly, 13, hydraulic piston assembly, 14, hydraulic cylinder, 15, Steel Cable Baffle Ring, 16, ram seat, 17, O-ring seals, 18, aperture.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, embodiment of the present utility model is described in further detail, to help those skilled in the art to have more complete, accurate and deep understanding to inventive concept of the present utility model, technological scheme.
Structure of the present utility model as expressed in Fig. 2, is a kind of air boost pump of engineering mechanical braking system, comprises cylinder shell 1, cylinder piston 3, push rod 5, connecting cover 8, valve assembly 12, hydraulic piston assembly 13, hydraulic cylinder 14; Described cylinder shell 1 forms cylinder assembly with connecting cover 8; Described hydraulic piston assembly 13 is located in hydraulic cylinder 14; Described cylinder piston 3 is located in the inner chamber of cylinder assembly; Described push rod 5 one end and cylinder piston 3 are fastenedly connected, and the other end, through the center hole of described connecting cover 8, is connected with described hydraulic piston assembly 13.
Annexation: air boosting pump suction port is connected with air brake valve (original a kind of valve in system) air outlet, and oil outlet is connected with break filler opening.
In order to solve the problem of prior art existence and to overcome its defect, realize the goal of the invention of the reliability that improves product, the technological scheme that the utility model is taked is:
As shown in Figure 2, air boost pump of engineering mechanical braking system of the present utility model, adopts y-shaped ring 9 and dust ring 6 to seal between described connecting cover 8 and push rod 5.
Between described y-shaped ring 9 and dust ring 6, be provided with guide sleeve 7, described guide sleeve 7 is enclosed within on described push rod 5.
In order to improve the reliability of product, the structure of the product of the utility model to prior art is carried out Transform Type design and update, between connecting cover 8 and push rod 5, adopt y-shaped ring 9, guide sleeve 7, dust ring 6 to seal, increasing guide sleeve 7 supports push rod 5, reduce the eccentric wear of gas piston apron 2 and y-shaped ring 9, improve product reliability.
Guide sleeve 7 in the middle of connecting cover 8 ensures that push rod 5 moves between two parties, not eccentric wear of gas piston apron 2.Change the direction of rubber seal face, avoid the frontal impact of high pressure oil to caulking gum, thereby improve the working life of product.
Described hydraulic piston assembly 13 is connected with push rod 5 by straight pin 11.Change hydraulic piston and being connected of push rod 5 into straight pin 11 and connect, connect the high reliability connecting.
Block by annular spring 10 at straight pin two ends, and it can not come off from hydraulic piston assembly 13.
It is to be connected by thread belt glue that described push rod 5 is fastenedly connected with cylinder piston 3.Improve the join strength of push rod 5 and cylinder piston 3.
Between described connecting cover 8 and hydraulic cylinder 14, adopt O-ring seals 17 to seal.
Between push rod 5 and connecting cover 8, ensure sealing by dust ring 6 and y-shaped ring 9.
Described valve assembly 12 is fixed on the bottom surface of hydraulic piston assembly 13 by Steel Cable Baffle Ring 15.
Between described cylinder piston 3 and connecting cover 8, establish return spring 4; Under the effect of described return spring 4, described push rod 5 is thrown off ram seat 16 and valve assembly 12 sealing surfaces, makes in hydraulic piston assembly 13 aperture 18 unimpeded, and brake fluid enters oil hydraulic cylinder inner chamber by aperture 18.
Under the effect of return spring 4, push rod 5 is thrown off ram seat 16 and valve assembly 12 sealing surfaces, ensures that diameter in hydraulic piston assembly 13 is that the aperture 18 of Φ 3 is unimpeded, and brake fluid enters oil hydraulic cylinder inner chamber by Φ 3 apertures 18.
Working principle of the present utility model and dynamic position relation:
When braking, to suction port air inlet, air pressure from air brake valve air outlet enters into cylinder assembly inner chamber by suction port, promotion push rod, piston assembly move forward, push rod 5 heads on ram seat 16 and seals valve assembly sealing surface and hydraulic piston Φ 3 apertures, oil inlet valve seals the repairing hole in hydraulic piston assembly, forms high pressure oil at hydraulic cylinder inner chamber, produces pressure.
When brake off, air pressure discharges, and under the effect of return spring 14, the aperture 18 of Φ 3 repairings opens wide, and brake fluid returns to lubricating cup by Φ 3 apertures.
By reference to the accompanying drawings the utility model is exemplarily described above; obviously the utility model specific implementation is not subject to the restrictions described above; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technological scheme carry out; or without improving, design of the present utility model and technological scheme are directly applied to other occasion, all within protection domain of the present utility model.
Claims (7)
1. an air boost pump of engineering mechanical braking system, comprises cylinder shell (1), cylinder piston (3), push rod (5), connecting cover (8), valve assembly (12), hydraulic piston assembly (13), hydraulic cylinder (14); Described cylinder shell (1) forms cylinder assembly with connecting cover (8); Described hydraulic piston assembly (13) is located in hydraulic cylinder (14); Described cylinder piston (3) is located in the inner chamber of cylinder assembly; Described push rod (5) one end and cylinder piston (3) are fastenedly connected, and the other end, through the center hole of described connecting cover (8), is connected with described hydraulic piston assembly (13); It is characterized in that: between described connecting cover (8) and push rod (5), adopt y-shaped ring (9) and dust ring (6) sealing.
2. according to air boost pump of engineering mechanical braking system claimed in claim 1, it is characterized in that: between described y-shaped ring (9) and dust ring (6), be provided with guide sleeve (7), described guide sleeve (7) is enclosed within on described push rod (5).
3. according to air boost pump of engineering mechanical braking system claimed in claim 1, it is characterized in that: described hydraulic piston assembly (13) is connected with push rod (5) by straight pin (11).
4. according to air boost pump of engineering mechanical braking system claimed in claim 1, it is characterized in that: it is to be connected by thread belt glue that described push rod (5) is fastenedly connected with cylinder piston (3).
5. according to air boost pump of engineering mechanical braking system claimed in claim 1, it is characterized in that: between described connecting cover (8) and hydraulic cylinder (14), adopt O-ring seals (17) sealing.
6. according to air boost pump of engineering mechanical braking system claimed in claim 1, it is characterized in that: described valve assembly (12) is fixed on the bottom surface of hydraulic piston assembly (13) by Steel Cable Baffle Ring (15).
7. according to air boost pump of engineering mechanical braking system claimed in claim 1, it is characterized in that: between described cylinder piston (3) and connecting cover (8), establish return spring (4); Under the effect of described return spring (4), described push rod (5) is thrown off ram seat (16) and valve assembly (12) sealing surface, make the middle aperture (18) of hydraulic piston assembly (13) unimpeded, brake fluid enters oil hydraulic cylinder inner chamber by aperture (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320874888.2U CN203702477U (en) | 2013-12-27 | 2013-12-27 | Air booster pump of engineering mechanical braking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320874888.2U CN203702477U (en) | 2013-12-27 | 2013-12-27 | Air booster pump of engineering mechanical braking system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203702477U true CN203702477U (en) | 2014-07-09 |
Family
ID=51052928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320874888.2U Expired - Lifetime CN203702477U (en) | 2013-12-27 | 2013-12-27 | Air booster pump of engineering mechanical braking system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203702477U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758723A (en) * | 2013-12-27 | 2014-04-30 | 芜湖盛力科技股份有限公司 | Air pump of engineering machinery braking system |
| CN113187771A (en) * | 2021-05-06 | 2021-07-30 | 鞍山彩盛机械制造有限公司 | Gas-liquid isolated automatic oil-supplementing pressure cylinder |
-
2013
- 2013-12-27 CN CN201320874888.2U patent/CN203702477U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758723A (en) * | 2013-12-27 | 2014-04-30 | 芜湖盛力科技股份有限公司 | Air pump of engineering machinery braking system |
| CN113187771A (en) * | 2021-05-06 | 2021-07-30 | 鞍山彩盛机械制造有限公司 | Gas-liquid isolated automatic oil-supplementing pressure cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140709 |