CN2835678Y - Steering pump flow control device - Google Patents
Steering pump flow control device Download PDFInfo
- Publication number
- CN2835678Y CN2835678Y CN 200520116048 CN200520116048U CN2835678Y CN 2835678 Y CN2835678 Y CN 2835678Y CN 200520116048 CN200520116048 CN 200520116048 CN 200520116048 U CN200520116048 U CN 200520116048U CN 2835678 Y CN2835678 Y CN 2835678Y
- Authority
- CN
- China
- Prior art keywords
- discharge port
- fuel discharge
- steering pump
- joints
- oil outlet
- 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 - Fee Related
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- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The utility model discloses a steering pump flow controlling device having the advantages of stable flow quantity output, safety, easy production and low cost, which comprises a pump body, joints of an oil outlet, which are connected with the pump body, sliding valves inside the cavity of the pump body and springs of the sliding valves on the back parts of the sliding valves, wherein the pump body is provided with overflow openings which are communicated with the inner cavities and oil channels which are communicated with front and back inner cavities; the joints of an oil outlet are provided with oblique holes which are communicated with the oil channels; the inner cavities of the joints of an oil outlet are provided with a fixing throttle valve which is communicated with the oil channels; the end surface of the fixing throttle valve is provided with a plurality of throttle openings; the inner cavities of the joints of an oil outlet are also provided with sliding cores; the space between the sliding cores and the fixing throttle valve is provided with small springs; the space between the outer circumference of the front section of the joints of an oil outlet and the walls of the inner cavities of the pump body is provided with a left and a right annular channels; the flowing areas on the back end of the right channel are smaller than that of the front end of the left channel; the space between the front section of the joints of an oil outlet and the middle section is provided with a plurality of the oblique holes which are communicated with the inner cavities of the joints of an oil outlet. The utility model is suitable for controlling the flow quantity output to the steering pump of a car.
Description
Technical field
The utility model relates to a kind of sedan steering pump, relates in particular to a kind of output flow control gear that is used for the sedan steering pump.
Background technique
The sedan steering pump is the equipment that hydraulic power supply is provided for the sedan steering system, can make sedan steering light, reduces driver's labor intensity, with further raising driving safety.Along with the car industrial expansion,, hydraulic steering system is had higher requirement for satisfying the high speed performance requirement of car.When running at high speed, the steering pump output flow is excessive as car, turns to sympathetic not obviously, and promptly direction has unstable sensation, easily causes driver fatigue, produces potential safety hazard; And car is when turning under low speed driving or engine idle state, and the steering pump output flow is too small, turns to feel heavy, influences cornering ability.So, for the steering pump in the sedan steering system, can be under the situation of vehicle motor rotation speed change, guarantee the stable of output flow, be the basis of realizing steering system works fine condition, particularly under steering pump high velocity, low pressure state or high speed and high pressure state, the output flow of steering pump all should remain in the predetermined range, the unlikely steering wheel driving torque that causes of ability is too small, and road feel disappears.And that the quality of the output flow control gear performance that matches with steering pump will directly have influence on the steering pump output flow will be stable.Present domestic steering pump can only satisfy the output flow decline requirement under the high velocity, low pressure state, but all can not reach output flow decline requirement under the high speed and high pressure state, main cause is that the output flow control gear performance that matches with it is difficult to reach requirement, as the Chinese patent publication number is CN 2475860Y, open day is on February 6th, 2002, name is called the model utility of " steering pump hides the formula flow control valve ", this application case discloses and has comprised and be arranged at the damping hole that is connected with commutator on the control valve body wall, guiding valve and slide valve spring in the valve body, be arranged at the annular boss in guiding valve inner end portion and stage casing, be arranged at the structures such as safety valve in the guiding valve cavity, though it can make the steering pump rotating speed when medium-to-high speed changes, flow descends, but it is level and smooth inadequately that its deficiency is the bulk flow recession curve, and can't realize that steering pump output quantity under the high speed and high pressure state drops to the specified value requirement.Though and the external steering pump of producing can satisfy the requirement that output quantity descends under the high speed and high pressure state, complex structure adopts Dou face controlling method as Japanese UJ company and KYB company, and its part is had relatively high expectations, so that causes the raising of manufacture cost.
Summary of the invention
The utility model is can not be implemented in the deficiency that output quantity under the high speed and high pressure state drops to the specified value requirement in order to overcome existing steering pump, provide a kind of output flow stable, safe and reliable, be easy to process, the output flow control gear of low cost of manufacture.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:
The utility model comprise end sealing the pump housing, the fuel discharge port that connects with the pump housing the other end, be arranged at the slide valve spring of endoceliac guiding valve of pump and guiding valve rear end, the described pump housing be provided with the flow-off of intracavity inter-connection and with the oil duct of front and back intracavity inter-connection, described fuel discharge port is provided with the Dou hole that communicates with oil duct, described fuel discharge port inner chamber is provided with the fixed restrictive valve that its inner chamber communicates with oil duct, and described fixed restrictive valve end face is provided with several restrictions.
Optimize the port connection inner chamber and also be provided with slide core, be provided with little spring between described slide core and the described fixed restrictive valve, be provided with annular pass, the left and right sides between described fuel discharge port leading portion excircle and the pump housing internal chamber wall, the circulation area of described right passage rear end is less than the circulation area of left passage front end, is provided with the Dou hole that communicates with its inner chamber between described fuel discharge port leading portion and the intermediate section.
The Dou hole number that is preferably disposed between fuel discharge port leading portion and the intermediate section is 2 or 4.
The restriction quantity that is preferably disposed on fixed restrictive valve one end is 2 or 4.
Compared with prior art, the utlity model has following obvious advantage and beneficial effect:
1. output flow is stable.Because the utility model moves the openings of sizes of controlling flow-off by oil pressure official post guiding valve, reach the stable of flow; Simultaneously at steering pump when the oil outlet output flow reaches certain value, contact with the fixed restrictive valve end face by the slide core end face again, it is poor that the circulation area of change restriction increases the oil pressure that acts on the guiding valve rear portion, reach the purpose of throttling for the second time, make steering pump under high velocity, low pressure and high speed and high pressure, output flow all remains on predetermined range.
2. safe and reliable.Because the utility model can be realized second throttle, makes car under different rotating speeds, the steering pump output flow all remains on predetermined range, and road feel is obvious when running at high speed, and steering wheel manoeuvrable when low speed turns to satisfies the safe driving requirement.
3. be easy to processing, low cost of manufacture.Because the utility model adopts the orifice restriction technology, processing technology is processed as the master with inside and outside circle and hole, and difficulty of processing is low, low cost of manufacture.
Description of drawings
Fig. 1 is an a kind of embodiment's of the present utility model structural representation;
Fig. 2 is rating curve figure in the preferred embodiment.
Embodiment
Below in conjunction with the drawings and the specific embodiments the utility model is described in further detail:
As shown in Figure 1, preferred embodiment comprises the pump housing 1 of end sealing, the pump housing 1 the other end is connected with the fuel discharge port 2 that inner chamber is connected with commutator, the pump housing 1 inner chamber is provided with the slide valve spring 4 at guiding valve 3 and guiding valve 3 rear portions, also be provided with on the pump housing 1 with the flow-off 5 of its intracavity inter-connection and with the oil duct 6 of front and back intracavity inter-connection, flow-off 5 is connected with the oil pump low-pressure cavity, fuel discharge port 2 is provided with the Dou hole 7 that communicates with oil duct 6, fuel discharge port 2 inner chambers are provided with fixed restrictive valve 8, fixed restrictive valve 8 inwalls are provided with the radial hole 9 that communicates with Dou hole 7 and oil duct 6, fixed restrictive valve 8 end faces are provided with restriction 10, the quantity of restriction 10 is 2 or 4, fuel discharge port 2 inner chambers also are provided with slide core 11, slide core 11 inner chambers are connected with oil outlet 12, be provided with little spring 13 between slide core 11 and the fixed restrictive valve 8, be provided with annular pass, the left and right sides between fuel discharge port 2 leading portion excircles and the pump housing 1 internal chamber wall, the circulation area of described right passage 15 rear ends is less than the circulation area of left passage 14 front ends, be provided with the Dou hole 16 that communicates with its inner chamber between fuel discharge port 2 leading portions and the intermediate section, the quantity in Dou hole 16 is 2 or 4.
The working procedure of present embodiment is:
When steering pump is worked, fluid enters slide core 11 inner chambers from oil outlet 12, when passing through the restriction 10 of fixed restrictive valve 8 end faces, restriction 10 two ends will produce pressure difference, and pressure oil reaches guiding valve 3 rear portions by oil duct 6 makes guiding valve 3 front end and back end produce identical pressure difference, when pressure difference reaches when being enough to overcome slide valve spring 4 power, guiding valve 3 moves backward, flow-off 5 just is opened, and a part of fluid is just got back to the oil pump low-pressure cavity by flow-off 5, makes the flow that exports commutator to controlled.
When steering pump when the flow of oil outlet output reaches certain value, because the throttling action of left passage 14, make its pressure greater than slide core 11 chamber pressures, when pressure oil when being arranged at the Dou hole 16 between fuel discharge port 2 leading portions and the intermediate section, because left passage 14 internal pressures are greater than slide core 11 chamber pressures, when its pressure difference is enough to overcome the spring force of little spring 13, slide core 11 moves to fixed restrictive valve 8 places, make fixed restrictive valve 8 end faces be covered a part by slide core 11 end faces, so the circulation area of restriction 10 reduces, the pressure difference at restriction 10 two ends increases, cause the opening of flow-off 5 to increase, flow to oil pump low-pressure cavity fluid by flow-off 5 also increases thereupon, thereby more effectively control flow rate descends, and makes the steering pump output flow be reduced to specified value.
As shown in Figure 2, steering pump is under high pressure low speed and high-voltage high-speed state, and output flow all remains on predetermined range.
Claims (4)
1. steering pump flow control device, comprise end sealing the pump housing, the fuel discharge port that connects with the pump housing the other end, be arranged at the slide valve spring at endoceliac guiding valve of pump and guiding valve rear portion, the described pump housing be provided with the flow-off of intracavity inter-connection and with the oil duct of front and back intracavity inter-connection, described fuel discharge port is provided with the Dou hole that communicates with oil duct, it is characterized in that described fuel discharge port inner chamber is provided with the fixed restrictive valve that its inner chamber communicates with oil duct, described fixed restrictive valve end face is provided with several restrictions.
2. steering pump flow control device according to claim 1, it is characterized in that described fuel discharge port inner chamber also is provided with slide core, be provided with little spring between described slide core and the described fixed restrictive valve, be provided with annular pass, the left and right sides between described fuel discharge port leading portion excircle and the pump housing internal chamber wall, the circulation area of described right passage rear end is less than the circulation area of left passage front end, is provided with several Dou holes that communicate with its inner chamber between described fuel discharge port leading portion and the intermediate section.
3. steering pump flow control device according to claim 2 is characterized in that the described Dou hole number that is arranged between fuel discharge port leading portion and the intermediate section is 2 or 4.
4. according to each described steering pump flow control device of claim 1 to 3, it is characterized in that the described restriction quantity that is arranged at the fixed restrictive valve end face is 2 or 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520116048 CN2835678Y (en) | 2005-10-15 | 2005-10-15 | Steering pump flow control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520116048 CN2835678Y (en) | 2005-10-15 | 2005-10-15 | Steering pump flow control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2835678Y true CN2835678Y (en) | 2006-11-08 |
Family
ID=37300332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520116048 Expired - Fee Related CN2835678Y (en) | 2005-10-15 | 2005-10-15 | Steering pump flow control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2835678Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573618A (en) * | 2013-10-26 | 2014-02-12 | 奇瑞汽车股份有限公司 | Variable-displacement power steering pump for cars |
| CN103921839A (en) * | 2014-04-30 | 2014-07-16 | 长城汽车股份有限公司 | Throttling valve, hydraulic power steering system and vehicle |
| CN104443018A (en) * | 2014-12-18 | 2015-03-25 | 临海市嘉美机械制造有限公司 | Unloading valve of hydraulic steering gear |
| CN108953708A (en) * | 2018-09-21 | 2018-12-07 | 徐州工程学院 | A kind of simple thread cartridge second level precursor overflow valve |
| CN111425386A (en) * | 2020-05-09 | 2020-07-17 | 沙斌 | Variable flow steering pump for commercial vehicle and engineering machinery |
-
2005
- 2005-10-15 CN CN 200520116048 patent/CN2835678Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573618A (en) * | 2013-10-26 | 2014-02-12 | 奇瑞汽车股份有限公司 | Variable-displacement power steering pump for cars |
| CN103921839A (en) * | 2014-04-30 | 2014-07-16 | 长城汽车股份有限公司 | Throttling valve, hydraulic power steering system and vehicle |
| CN104443018A (en) * | 2014-12-18 | 2015-03-25 | 临海市嘉美机械制造有限公司 | Unloading valve of hydraulic steering gear |
| CN108953708A (en) * | 2018-09-21 | 2018-12-07 | 徐州工程学院 | A kind of simple thread cartridge second level precursor overflow valve |
| CN111425386A (en) * | 2020-05-09 | 2020-07-17 | 沙斌 | Variable flow steering pump for commercial vehicle and engineering machinery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061108 Termination date: 20121015 |