CN104595387A - Integrated hydraulic retarder - Google Patents
Integrated hydraulic retarder Download PDFInfo
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- CN104595387A CN104595387A CN201510054273.9A CN201510054273A CN104595387A CN 104595387 A CN104595387 A CN 104595387A CN 201510054273 A CN201510054273 A CN 201510054273A CN 104595387 A CN104595387 A CN 104595387A
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- Prior art keywords
- retarder
- spool
- oil
- control valve
- valve block
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Abstract
The invention provides an integrated hydraulic retarder and belongs to the technical field of auxiliary brake systems. The device comprises a gear oil pump, a control valve block, an oil storage tank and a retarder, wherein the gear oil pump sucks oil from the oil storage tank; an oil outlet of the gear oil pump is connected with the oil inlet of the control valve block; after applying work, working oil which enters into the retarder is cooled by a cooler, and is then incessantly subjected to working circulation; pressure oil in the control valve block is controlled through the control valve block by virtue of a rotary valve core, and the valve core is provided with a certain amount of holes; by virtue of a pull pin of the rotary valve core, different overlap degrees between the holes of the valve core and holes of the retarder and an oil return tank are used to control the flow and speed of the oil which flows in and out of the retarder, so that accurate control of the retarder is realized, and the response time is improved; the control valve block is further provided with an overflow valve, so that a safety protection effect is achieved. The device is high in integration degree; oil way connections are reduced, and the system efficiency and the system stability are greatly improved.
Description
Technical field
The present invention relates to auxiliary braking system technical field, refer to a kind of integrated form hydrodynamic retarder especially.
Background technique
The braking safety of automobile enjoys people to be concerned about always, especially for large and medium-sized automobile, due to own wt and carrying capacity large, the overload of system can be made during service brake, cause the character of heat-fading phenomenon of brake strip and brake hub, working life is shortened greatly, causes maintenance cost to increase.For avoiding this phenomenon, complemental brake system is adopted to be absolutely necessary.And hydrodynamic retarder because of its weight little, braking moment is large, is applicable to the advantages such as long-time continuous braking and is widely applied.
In the design documents and materials of hydrodynamic retarder oil circuit, the motion mode of existing control valve is generally sliding valve style, existing sliding valve style controls formula retarder ubiquity and that sensitivity is not high, not compact, the bulky shortcoming of structure, uses integrated form design and rotary valve-type control mode to can solve this problem.
Summary of the invention
The technical problem to be solved in the present invention is to provide the hydrodynamic retarder of a kind of integrated form and rotary valve control, realizes the integrated installation of hydrodynamic retarder and each hydraulic module, reduces oil circuit and connects, and improves security and stability and the high efficiency of system works.
This hydrodynamic retarder, comprise retarder, fuel reserve tank, control valve block and gear oil pump, gear oil pump one end is connected with fuel reserve tank, the other end connection control valve block, and centre is connected with the rotor of retarder by flat key, gear oil pump and the synchronized rotation of rotor; Retarder, fuel tank, control valve and gear oil pump are fitted together by the mode opened, and outside is provided with heat exchanger, are connected with retarder with control valve block; Control valve block comprises control valve valve block housing, Spool assembly, relief valve spool, relief valve spring seat, spool pressing plate, technique hydraulic fluid port pressing plate, oil return flange assembly and spool and pulls pin, control valve valve block outside is welded with Spool assembly and oil return flange assembly, control valve valve block enclosure interior is provided with relief valve spool relief valve spring seat, control valve block outer installment spool pressing plate and technique hydraulic fluid port pressing plate, spool pressing plate is equipped with spool and pulls pin.
Wherein, the composition such as relief valve spool and relief valve spring seat relief valve, pressure oil is introduced from relief valve inlet; Relief valve spool, built with two dividing plates, is divided into two chambeies do not communicated, and communicates with the oil inlet and outlet of retarder and the mouth of fuel reserve tank; The motion mode of relief valve spool is rotary motion, is pulled pin by rotary spool, changes the contact ratio to hole, controls the fluid flow entering and flow out retarder; Relief valve spool has oil inlet hole, oil outlet and auxiliary hole.
The beneficial effect of technique scheme of the present invention is as follows:
One is that integration degree is high, decreases oil circuit and connects, greatly can improve efficiency and the stability of system; Two are the motion modes proposing a kind of control valve in hydrodynamic retarder is rotary valve-type, by rotary spool, can control pressure and the speed of the fluid entering hydrodynamic retarder, so efficiently, the accurate working state controlling hydrodynamic retarder.
Accompanying drawing explanation
Fig. 1 is integrated form hydraulic speed buffer structure schematic diagram of the present invention;
Fig. 2 is the hydraulic principle schematic diagram of integrated form hydrodynamic retarder of the present invention;
Fig. 3 is the plan view of control valve block of the present invention;
Fig. 4 is the left view of control valve block of the present invention;
Fig. 5 is gear oil pump structural representation of the present invention;
Fig. 6 is the plan view of fuel reserve tank of the present invention;
Fig. 7 is the left view of fuel reserve tank of the present invention;
Fig. 8 is the plan view of fuel reserve tank of the present invention.
[primary component symbol description]
1-retarder; 2-fuel reserve tank; 3-control valve block; 4-gear oil pump; 5-PTO power take-off; 6-heat exchanger; 7-control valve valve block housing; 8-Spool assembly; 9-relief valve spool; 10-relief valve spring seat; 11-spool pressing plate; 12-technique hydraulic fluid port pressing plate; 13-oil return flange assembly; 14-spool is pulled pin; 15-driving shaft; 16-flat key; 17-pump cover; The 18-pump housing; 19-gear; 20-driven shaft; 21-oil sump welding assembly; 22-tank drainback mouth connector assembly; 23-fuel tank inlet port connector assembly; 24-tank drainback pipe assembly; 25-fuel tank oil suction pipe assembly; 26-locking nut; 27-air filter; 28-oil temperature oil level indicator; 29-retarder pressing plate.
Embodiment
For making the technical problem to be solved in the present invention, technological scheme and advantage clearly, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
The invention provides a kind of integrated form hydrodynamic retarder, as shown in Figure 1, for the structural representation of this hydrodynamic retarder, comprise retarder 1, fuel reserve tank 2, control valve block 3 and gear oil pump 4, retarder housing is arranged on designed fuel reserve tank 2, and upper dozen tapped hole of position suitable on fuel reserve tank 2, with fixing retarder casing, gear oil pump 4 and control valve block 3 are also arranged on the correct position of retarder casing, gear oil pump 4 one end is connected with fuel reserve tank 2, the other end connection control valve block 3, the middle flat key 16 that passes through is connected with the rotor of retarder 1, gear oil pump 4 and the synchronized rotation of rotor, retarder 1, fuel tank 2, control valve 3 and gear oil pump 4 are fitted together by the mode opened.
Be illustrated in figure 2 hydrodynamic retarder principle schematic of the present invention, power is input to retarder 1 input end by PTO power take-off 5, the output terminal of retarder 1 is directly connected with the input end of gear oil pump 4, as the power resources of gear oil pump 4, the inlet port of gear oil pump 4 is connected with fuel reserve tank 2, oil outlet is directly connected with the filler opening of control valve block 3, the pressure oil exported by gear oil pump 4 like this carries out the control of flow and speed by control valve block 3, flow into retarder 1, retarder 1 is done work, play the effect of auxiliary braking, the fluid of high temperature flows into again in retarder 1 after heat exchanger 6 cools, can continual circular work, heat exchanger 6 is for cool cycles fluid, prevent oil liquid temperature too high, oil viscosity is reduced, leak.
As shown in Figure 3, Figure 4, be the schematic diagram of control valve block of the present invention, relief valve spool 9 and relief valve spring seat 10 form relief valve, and pressure oil is introduced from relief valve inlet.Relief valve can prevent retarder 1 inflow pipeline internal pressure excessive, plays safety protection.Relief valve spool 9 is rotatable, be arranged in the round chamber of control valve block 3, the hole corresponding with hole control valve block 3 passing in and out retarder 1 and fuel reserve tank 2 is had at the correct position of relief valve spool 9, the motion mode of relief valve spool 9 is rotary motion, 14 are pulled pin by rotary spool, change the contact ratio to hole, control the fluid flow entering and flow out retarder 1; And relief valve spool 9 is built with two dividing plates, make it to be separated into two independently cavity volumes, one is oil inlet passage, and another is drainback passage.Control valve block 3 offers oil inlet hole, oil outlet and 3 auxiliary holes, the pressure and temperature entering retarder 1 and the fluid from retarder 1 outflow can be detected at any time.Between oil inlet passage and relief valve, offer a through hole, both prevented the generation causing the excessive unsafe problems brought of oil inlet passage pressure when retarder 1 does not work, the pressure uniform that simultaneously seal ring also can be made to be subject to, extend seal ring working life.
Be illustrated in figure 5 gear oil pump structural representation of the present invention, in gear oil pump, driving shaft 15 is connected by gear 19 with driven shaft 20, and outside is surrounded by pump cover 17 and the pump housing 18.
As Fig. 6, Fig. 7, Figure 8 shows that fuel reserve tank structural representation of the present invention, the oil sump welding outside side of assembly 21 is welded with tank drainback mouth connector assembly 22 and fuel tank inlet port connector assembly 23, retarder pressing plate 29 is equipped with on top, air filter 27 and oil temperature oil level indicator 28 are equipped with in oil sump welding assembly 21 side, tank drainback pipe assembly 24 is positioned at fuel reserve tank 2 inner tank return opening connector assembly 22 corresponding part, fix with locking nut 26, fuel tank oil suction pipe assembly 25 is positioned at fuel reserve tank 2 inner tank inlet port connector assembly 23 corresponding part.
In the course of the work, rotary spool pulls pin 14, and change the hole on relief valve spool 9 and different contact ratios control valve block 3 passing in and out the hole of retarder 1 and fuel reserve tank 2, if overlap completely, then now the retardation pressure of retarder 1 is maximum; During if desired little braking force, then rotatable spool pulls pin 14, makes it partially overlap, and the fluid entering retarder 1 like this will reduce, thus the braking force of retarder 1 reduces; When not needing braking, then can directly return fuel reserve tank 2; If when retarder 1 breaks down, then oil liquid pressure can open relief valve, and hydraulic oil directly returns fuel reserve tank 2, plays a protective role.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. an integrated form hydrodynamic retarder, comprise retarder (1), fuel reserve tank (2), control valve block (3) and gear oil pump (4), it is characterized in that: described gear oil pump (4) one end is connected with fuel reserve tank (2), the other end connection control valve block (3), the middle flat key (16) that passes through is connected with the rotor of retarder (1), gear oil pump (4) and the synchronized rotation of rotor, retarder (1), fuel tank (2), control valve (3) and gear oil pump (4) are fitted together by the mode opened, outside is provided with heat exchanger (6), is connected with retarder (1) with control valve block (3), described control valve block (3) comprises control valve valve block housing (7), Spool assembly (8), relief valve spool (9), relief valve spring seat (10), spool pressing plate (11), technique hydraulic fluid port pressing plate (12), oil return flange assembly (13) and spool pull pin (14), control valve valve block housing (7) outside weldings has Spool assembly (8) and oil return flange assembly (13), control valve valve block housing (7) inside is provided with relief valve spool (9) and relief valve spring seat (10), control valve block (3) outer installment spool pressing plate (11) and technique hydraulic fluid port pressing plate (12), spool pressing plate (11) is equipped with spool and pulls pin (14).
2. a kind of integrated form hydrodynamic retarder according to claim 1, is characterized in that: described relief valve spool (9) and relief valve spring seat (10) composition relief valve, pressure oil is introduced from relief valve inlet.
3. a kind of integrated form hydrodynamic retarder according to claim 1, it is characterized in that: described relief valve spool (9) is built with two dividing plates, be divided into two chambeies do not communicated, communicate with the oil inlet and outlet of retarder (1) and the mouth of fuel reserve tank (2).
4. a kind of integrated form hydrodynamic retarder according to claim 1, it is characterized in that: the motion mode of described relief valve spool (9) is rotary motion, (14) are pulled pin by rotary spool, change the contact ratio to hole, control the fluid flow entering and flow out retarder (1).
5. a kind of integrated form hydrodynamic retarder according to claim 1, is characterized in that: (9) have oil inlet hole, oil outlet and auxiliary hole to described relief valve spool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510054273.9A CN104595387B (en) | 2015-02-02 | 2015-02-02 | A kind of integrated form Retarder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510054273.9A CN104595387B (en) | 2015-02-02 | 2015-02-02 | A kind of integrated form Retarder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104595387A true CN104595387A (en) | 2015-05-06 |
| CN104595387B CN104595387B (en) | 2017-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510054273.9A Active CN104595387B (en) | 2015-02-02 | 2015-02-02 | A kind of integrated form Retarder |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114396440A (en) * | 2021-12-23 | 2022-04-26 | 陕西法士特齿轮有限责任公司 | Independent assembly type front retarder system and control method |
| CN115199674A (en) * | 2022-06-02 | 2022-10-18 | 阜新德尔汽车部件股份有限公司 | Hydraulic retarder controlled by oil pump |
| CN115451039A (en) * | 2022-09-14 | 2022-12-09 | 一汽解放汽车有限公司 | Integrated hydraulic retarder system and control method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4881625A (en) * | 1988-06-27 | 1989-11-21 | General Motors Corporation | Control valving for a hydraulic retarder |
| CN101565038A (en) * | 2009-05-11 | 2009-10-28 | 湘潭大学 | Speed retarder of proportional valve control pump type medium and low power vehicle |
| CN202847666U (en) * | 2012-11-06 | 2013-04-03 | 南京工业职业技术学院 | Hydraulic pressure retarder |
-
2015
- 2015-02-02 CN CN201510054273.9A patent/CN104595387B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4881625A (en) * | 1988-06-27 | 1989-11-21 | General Motors Corporation | Control valving for a hydraulic retarder |
| CN101565038A (en) * | 2009-05-11 | 2009-10-28 | 湘潭大学 | Speed retarder of proportional valve control pump type medium and low power vehicle |
| CN202847666U (en) * | 2012-11-06 | 2013-04-03 | 南京工业职业技术学院 | Hydraulic pressure retarder |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114396440A (en) * | 2021-12-23 | 2022-04-26 | 陕西法士特齿轮有限责任公司 | Independent assembly type front retarder system and control method |
| CN115199674A (en) * | 2022-06-02 | 2022-10-18 | 阜新德尔汽车部件股份有限公司 | Hydraulic retarder controlled by oil pump |
| CN115451039A (en) * | 2022-09-14 | 2022-12-09 | 一汽解放汽车有限公司 | Integrated hydraulic retarder system and control method |
| CN115451039B (en) * | 2022-09-14 | 2024-07-09 | 一汽解放汽车有限公司 | Integrated hydraulic retarder system and control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104595387B (en) | 2017-03-01 |
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