CN102979839A - Brake tap changer for hydraulic retarder - Google Patents
Brake tap changer for hydraulic retarder Download PDFInfo
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- CN102979839A CN102979839A CN2012104780643A CN201210478064A CN102979839A CN 102979839 A CN102979839 A CN 102979839A CN 2012104780643 A CN2012104780643 A CN 2012104780643A CN 201210478064 A CN201210478064 A CN 201210478064A CN 102979839 A CN102979839 A CN 102979839A
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Abstract
The invention discloses a brake tap changer for a hydraulic retarder. The brake tap changer comprises a shell, an oil chamber A, an oil chamber B, and an oil chamber C which are arranged in the shell, wherein an external oil drain hole, an external booster oil inlet and an oil drain hole 7 as well as an oil drain switch, a tap changer A and a tap changer B which penetrate through the shell are arranged on the front surface of the shell, and a work chamber oil drain hole, an oil inlet A, an oil inlet B, a pressure relief hole A and a pressure relief hole B are arranged on the back surface of the shell; the oil drain switch corresponds to the work chamber oil drain hole, and the tap changer A and the tap changer B correspond to the pressure relief hole A and the pressure relief hole B; and a separating switch is arranged in the oil cavity B. The brake tap changer provided by the invention has the advantages of skillful design, compact size and stable work, and oil can be quickly supplied to the hydraulic retarder by using the tap changer, so that the sensitivity and the speed of response are improved, and the braking is smooth; and meanwhile, a return spring has a moderate length, so that the phenomenon that the spring is stuck is avoided, so that the work state is stable, and the failure rate is low.
Description
Technical field
The present invention relates to a kind of hydrodynamic retarder, particularly a kind of for the brake tap changer on the hydrodynamic retarder.
Background technique
The patent of invention that a kind of name is called mechanical supercharging adjustment hydraulic turbine retarder is disclosed at CN201896889U, be respectively arranged with oil-feed tap changer, drain cock and tap changer at this hydrodynamic retarder, although they can play separately oil-feed, active chamber oil extraction and regulate the effect of active chamber internal pressure, still there is following deficiency in such structure:
1, owing to be independently to arrange, cause them to take more shell space, so that the area of housing increases, inconvenience is installed not only, and so that manufacture cost is higher;
2, because these three kinds of switches are and minute are arranged, and it is too far away to be used for the oil duct standoff distance of connection between them, affects fuel feeding usefulness, has certain delay when fuel feeding, causes the hydrodynamic retarder sluggish;
3, because tap changer is comprised of the through hole on the sidewall of switch sleeve, spring, steel ball, bolt and switch sleeve rear end, and structure is too simple, cause when pressure regulation, pressure regulation dynamics inaccuracy is so that brake is not steady;
4, because drain cock is to be positioned at housing, when work, produce high temperature, under hot environment, cause easily the Sealing of piston aging, cause drain cock to produce easily the problem of leakage of oil;
5, because the position design of oil-feed tap changer is unreasonable, housing is when outside oil extraction, be subject to the obstruction of fuel oil feed regulation switch, so that housing produces high temperature, braking effect reduces, and, because the spring of oil-feed tap changer is long, and stuck phenomenon occurs easily, causes spring failure, so that the oil-feed tap changer is in running order for a long time, thereby cause hydrodynamic retarder to be in braking state always.
Summary of the invention
Purpose of the present invention just provide a kind of braking efficiency height, stable working, volume small and exquisite be used for brake tap changer on the hydrodynamic retarder.
The objective of the invention is to realize that by such technological scheme a kind of for the brake tap changer on the hydrodynamic retarder, it comprises housing;
Independently oil pocket A in housing and the oil pocket B that is interconnected and oil pocket C;
Be provided with the external oil drainage hole that is communicated with oil pocket A, oil pocket B and oil pocket C respectively, external afterburning oil inlet hole and oil drainage hole in the front of housing, and all penetrate housing and pass respectively oil pocket A and the drain cock of oil pocket C and tap changer A, tap changer B;
Be provided with the active chamber oil drainage hole that is communicated with oil pocket A, the oil inlet hole A that is communicated with oil pocket B and oil inlet hole B and the relief hole A that is communicated with oil pocket C and relief hole B at the back side of housing,
Wherein, drain cock is corresponding with the active chamber oil drainage hole, and tap changer A is corresponding with relief hole A and relief hole B with tap changer B;
In described oil pocket B, be provided with separating switch.
Wherein, described separating switch comprises oil-feed tap changer cover, oil-feed tap changer piston, oil-feed tap changer valve and the return spring of cross setting, described oil-feed tap changer cover stretches into housing and is connected with housing, described oil-feed tap changer piston is positioned at oil-feed tap changer cover and is connected with an end of oil-feed tap changer valve, the other end of described oil-feed tap changer valve withstands on the end of return spring, and the other end of return spring withstands on the inwall of oil pocket C.
Further, described tap changer A comprises piston valve, spring, piston and tap changer cover, one end of described piston valve withstands on relief hole A place, the other end penetrates in the tap changer cover, described piston is positioned at the tap changer cover, and an end penetrates in the spring, and described spring is positioned at the described drain cock of piston valve and comprises oil extraction piston and drain cock cover, and described oil extraction piston is positioned at the drain cock cover.
Owing to adopted technique scheme, the present invention has that structural design is ingenious, volume is small and exquisite, the advantage of working stability, adopt it to carry out fuel feeding to retarder fast, sensitivity and reaction velocity have been improved, so that brake steadily, simultaneously, because return spring moderate length, prevented the generation of spring stuck phenomenon, so that stable working state, failure rate is low.
Description of drawings
Description of drawings of the present invention is as follows:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the rear view of Fig. 1;
Fig. 3 is the plan view of Fig. 1;
Fig. 4 is the A-A sectional block diagram of Fig. 3;
Fig. 5 is the B-B sectional view of Fig. 1;
Fig. 6 is the C-C sectional view of Fig. 1;
Fig. 7 is the D-D sectional view of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail, but the present invention is not limited to these mode of executions, any on the present embodiment essence spirit improvement or substitute, still belong to claim of the present invention scope required for protection.
Embodiment 1: shown in Fig. 1,2,3,4, a kind of for the brake tap changer on the hydrodynamic retarder, it is characterized in that: it comprises
Housing 1;
Independently oil pocket A2 in housing 1 and the oil pocket B3 that is interconnected and oil pocket C4;
Be provided with the external oil drainage hole 5 that is communicated with oil pocket A2, oil pocket B3 and oil pocket C4 respectively, external afterburning oil inlet hole 6 and oil drainage hole 7 in the front of housing 1, and all penetrate housing 1 and pass respectively oil pocket A2 and the drain cock 8 of oil pocket C4 and tap changer A9, tap changer B10;
Be provided with the active chamber oil drainage hole 11 that is communicated with oil pocket A2, the oil inlet hole A12 that is communicated with oil pocket B3 and oil inlet hole B13 and the relief hole A14 that is communicated with oil pocket C4 and relief hole B15 at the back side of housing 1,
Wherein, drain cock 8 is corresponding with active chamber oil drainage hole 11, and tap changer A9 is corresponding with relief hole A14 and relief hole B15 with tap changer B10;
In described oil pocket B3, be provided with separating switch 16.
As shown in Figure 5, separating switch 16 of the present invention comprises oil-feed tap changer cover 17, oil-feed tap changer piston 18, oil-feed tap changer valve 19 and the return spring 20 of cross setting, described oil-feed tap changer cover 17 stretches into housing 1 and is connected with housing 1, described oil-feed tap changer piston 18 is positioned at oil-feed tap changer cover 17 and is connected with an end of oil-feed tap changer valve 19, the other end of described oil-feed tap changer valve 19 withstands on the end of return spring 20, and the other end of return spring 20 withstands on the inwall of oil pocket C4.
As shown in Figure 6, described tap changer A9 of the present invention comprises piston valve 21, spring 22, piston 23 and tap changer cover 24, one end of described piston valve 21 withstands on relief hole A14 place, the other end penetrates in the tap changer cover 24, described piston 23 is positioned at tap changer cover 24, and an end penetrates in the spring 22, and described spring 22 is positioned at piston valve 21.In the present invention, tune switch A9 is identical with the structure of tap changer B10, does not repeat them here the structure of tap changer B10.
As shown in Figure 7, described drain cock 8 comprises oil extraction piston 25 and drain cock cover 26, and described oil extraction piston 25 is positioned at drain cock cover 26.
The present invention is like this work: oil drainage hole 7, oil inlet hole B13, relief hole A14, relief hole B15, external afterburning oil inlet hole 6 and external oil drainage hole 5 all are communicated with the external heat radiation fuel tank;
Oil inlet hole A12 is communicated with the active chamber oil inlet hole of retarder; Active chamber oil drainage hole 11 is communicated with the oil drainage hole of the active chamber of retarder;
When the present invention did not work, separating switch 16 and drain cock 8 were not worked, and at this moment, tap changer A9, tap changer B10, relief hole A14 and relief hole B15 all close, outwards draining; Oil in the external heat radiation fuel tank enters in the oil pocket B3 through oil inlet hole B13, and oil-feed this moment tap changer piston 18 is opened, so that oil is expelled back into again in the external heat radiation fuel tank from the oil drainage hole 7 of oil pocket C4 by oil pocket B3, circulates with regard to forming like this.
When the present invention works, separating switch 16 and drain cock 8 work; Oil in the external heat radiation fuel tank enters in the oil pocket B3 through oil inlet hole B13, at this moment, separating switch 16 work, so that oil-feed tap changer piston 18 is closed, oil pocket B3 and oil pocket C4 close, working oil can only enter in the active chamber of retarder by oil inlet hole A12, makes retarder play slow effect.
When needs pressurize to retarder, can be by the active chamber pressurization of 6 pairs of retarders of external afterburning oil inlet hole; Working oil enters in the oil pocket B3 by external afterburning oil inlet hole 6, because oil pocket B3 and oil pocket C4 close, at this moment, the oil inlet hole A12 of this working oil by being communicated with oil pocket B3 enters into that the active chamber of retarder is interior to pressurize to retarder.
When pressure excessive, the pressure in its active chamber greater than tap changer A9 or/and during tap changer B10, tap changer A9 or/and tap changer B10 open, working oil by relief hole A9 or/and relief hole B10 be discharged in the external heat radiation fuel tank.
After retarder work is finished, separating switch 16 and drain cock 8 are not worked, oil extraction piston 25 in the drain cock 8 is opened, working oil in the active chamber of retarder enters into oil pocket A2 through active chamber oil drainage hole 11, enters in the external heat radiation fuel tank by the external oil drainage hole 5 that is communicated with oil pocket A2 and dispels the heat; Simultaneously, the oil-feed tap changer piston 18 of separating switch 16 is opened, so that oil pocket B3 and oil pocket C4 are communicated with, working oil in the external heat radiation fuel tank enters in the oil pocket C4 through the oil inlet hole B13 of oil pocket B3, be expelled back into again in the external heat radiation fuel tank from oil drainage hole 7 by oil pocket C4, at this moment, tap changer A9 and tap changer B10 all close, relief hole A14 and the relief hole B15 working oil that can not leak can only be discharged to the external heat radiation fuel tank by oil drainage hole 7 and carry out circulation cooling.
Claims (4)
1. brake tap changer that is used on the hydrodynamic retarder, it is characterized in that: it comprises
Housing (1);
Independently oil pocket A(2 in housing (1)) and the oil pocket B(3 that is interconnected) and oil pocket C(4);
Be provided with in the front of housing (1) respectively and oil pocket A(2), oil pocket B(3) and oil pocket C(4) the external oil drainage hole (5), external afterburning oil inlet hole (6) and the oil drainage hole (7) that are communicated with, and all penetrate housing (1) and pass respectively oil pocket A(2) and oil pocket C(4) drain cock (8) and tap changer A(9), tap changer B(10);
Be provided with and oil pocket A(2 at the back side of housing (1)) the active chamber oil drainage hole (11) that is communicated with, with oil pocket B(3) the oil inlet hole A(12 that is communicated with) and oil inlet hole B(13) and with oil pocket C(4) the relief hole A(14 that is communicated with) and relief hole B(15),
Wherein, drain cock (8) is corresponding with active chamber oil drainage hole (11), tap changer A(9) with tap changer B(10) with relief hole A(14) and relief hole B(15) corresponding;
At described oil pocket B(3) in be provided with separating switch (16).
2. as claimed in claim 1 for the brake tap changer on the hydrodynamic retarder, it is characterized in that: described separating switch (16) comprises the oil-feed tap changer cover (17) of cross setting, oil-feed tap changer piston (18), oil-feed tap changer valve (19) and return spring (20), described oil-feed tap changer cover (17) stretches into housing (1) and is connected with housing (1), described oil-feed tap changer piston (18) is positioned at oil-feed tap changer cover (17) and is connected with an end of oil-feed tap changer valve (19), the other end of described oil-feed tap changer valve (19) withstands on the end of return spring (20), and the other end of return spring (20) withstands on oil pocket C(4) inwall on.
3. as claimed in claim 2 for the brake tap changer on the hydrodynamic retarder, it is characterized in that: described tap changer A(9) comprise piston valve (21), spring (22), piston (23) and tap changer cover (24), one end of described piston valve (21) withstands on relief hole A(14) locate, the other end penetrates in the tap changer cover (24), described piston (23) is positioned at tap changer cover (24), and an end penetrates in the spring (22), and described spring (22) is positioned at piston valve (21).
4. as claimed in claim 3 for the brake tap changer on the hydrodynamic retarder, it is characterized in that: described drain cock (8) comprises oil extraction piston (25) and drain cock cover (26), and described oil extraction piston (25) is positioned at drain cock cover (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210478064.3A CN102979839B (en) | 2012-11-22 | 2012-11-22 | Brake tap changer for hydraulic retarder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210478064.3A CN102979839B (en) | 2012-11-22 | 2012-11-22 | Brake tap changer for hydraulic retarder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102979839A true CN102979839A (en) | 2013-03-20 |
| CN102979839B CN102979839B (en) | 2014-11-26 |
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ID=47854121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210478064.3A Active CN102979839B (en) | 2012-11-22 | 2012-11-22 | Brake tap changer for hydraulic retarder |
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| Country | Link |
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| CN (1) | CN102979839B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2226667Y (en) * | 1994-10-23 | 1996-05-08 | 凤文成 | Main pressure regulating valve for hydraulic transmission power gear shift variable speed case |
| EP1338834A2 (en) * | 2002-02-21 | 2003-08-27 | Laizhou Hardware Machinery Co., Ltd. | A hydraulic control valve used for firewood splitter |
| CN201190706Y (en) * | 2008-04-02 | 2009-02-04 | 刘浩明 | Multiple directional control valve |
| CN201934408U (en) * | 2010-12-23 | 2011-08-17 | 山东临工工程机械有限公司 | Flow conversion controlling valve |
| CN202914592U (en) * | 2012-11-22 | 2013-05-01 | 重庆津德福科技开发有限公司 | Brake pressure regulating switch for hydrodynamic retarder |
-
2012
- 2012-11-22 CN CN201210478064.3A patent/CN102979839B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2226667Y (en) * | 1994-10-23 | 1996-05-08 | 凤文成 | Main pressure regulating valve for hydraulic transmission power gear shift variable speed case |
| EP1338834A2 (en) * | 2002-02-21 | 2003-08-27 | Laizhou Hardware Machinery Co., Ltd. | A hydraulic control valve used for firewood splitter |
| CN201190706Y (en) * | 2008-04-02 | 2009-02-04 | 刘浩明 | Multiple directional control valve |
| CN201934408U (en) * | 2010-12-23 | 2011-08-17 | 山东临工工程机械有限公司 | Flow conversion controlling valve |
| CN202914592U (en) * | 2012-11-22 | 2013-05-01 | 重庆津德福科技开发有限公司 | Brake pressure regulating switch for hydrodynamic retarder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102979839B (en) | 2014-11-26 |
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Effective date of registration: 20190214 Address after: 402247 Shuangfu Industrial Park Demolition and Resettlement Complex Building Area A, Jiangjin District, Chongqing Patentee after: CHONGQING LIGHT TRANSFORM OPTOELECTRONICS CO., LTD. Address before: 402260 Building 13, Phase II, Degan Industrial Park, Jiangjin District, Chongqing Patentee before: Chongqing Jindefu Science & Technology Development Co., Ltd. |