CN103758807A - Automobile differential constant-current steering booster pump or threaded differential relief cartridge valve - Google Patents
Automobile differential constant-current steering booster pump or threaded differential relief cartridge valve Download PDFInfo
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- CN103758807A CN103758807A CN201410010932.4A CN201410010932A CN103758807A CN 103758807 A CN103758807 A CN 103758807A CN 201410010932 A CN201410010932 A CN 201410010932A CN 103758807 A CN103758807 A CN 103758807A
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Abstract
Disclosed is an automobile differential constant-current steering booster pump or a threaded differential relief cartridge valve. A core structure of the automobile differential constant-current steering booster pump is mounted on a pump body, a limit screw plug and a differential spool are mounted in the pump body, a pressure adjusting spring is mounted in the differential spool, a pressure adjusting gasket is mounted at the end of the pressure adjusting spring, and an O-shaped ring is mounted on the limit screw plug; beside, the pump body is provided with an oil inlet cavity, an oil inlet, a working port, a spring cavity, an unloading cavity, a return cavity and a return port inside; the differential spool is provided with an oil via. The automobile differential constant-current steering booster pump has the advantages that according to the unique innovative positive-displacement pressure action area differential constant-current hydraulic principle, structure is simplified, number of parts is reduced, manufacturing cost is reduced, damping holes are omitted, pressure loss due to hydraulic control is reduced, pollution resistance capacity is high, and working reliability and mechanical efficiency of a hydraulic system are improved. The principle is adaptable to steering pumps such as gear pumps, blade pumps, plunger pumps and screw pumps widely. The innovation is brought to the automobile steering booster hydraulic control technology, and both economic and social benefits are great.
Description
Technical field
The invention belongs to the differential constant current power assistance pump for steering of a kind of automobile or differential thread plug-in mounting relief valve.
Background technique
Hydraulic steering pump is the core hydraulic element in various automobiles and engineering vehicle fluid-link steering, is used for handling and controls power steering motion, realizes hydraulic booster and controls.At present, hydraulic steering pump all adopts guide's pressure reduction distributary mechanism.By damping back pressure guiding valve two ends pressure reduction, realize constant voltage and control and off-load hydraulic principle, complete the pressure requirement of different vehicle to steering pump.
The problem that hydraulic steering pump hydraulic system exists:
1. pilot valve is to maintain main slide valve overflow work by damping, due to the principle that adopts damping pressure reduction to control, and liquid overdamping hole build-up of pressure loss heating, and contamination resistance is poor, damping hole is easily gambled plug and is caused and turn to malfunctioningly, and traffic accidents occurs; Oil hydraulic pump is pressed the improper damage that causes steering pump moving parts because damping is tired simultaneously.
2. fundamental composition is pilot valve and main slide valve two-part, complex structure, and cost is high.Not only cause the significant wastage of the energy, also can make the oil temperature of hydraulic system sharply raise, cause system heating; And motor is worked under high speed, because pocketed oil, tired pressure have caused the boost pump life-span to be reduced.
Summary of the invention
The object of the invention is to, solve above-mentioned existing existing problem, provide the automobile that a kind of energy loss is little, contamination resistance is strong, reliability is high, power utilization is high differential constant current power assistance pump for steering
ordifferential thread plug-in mounting relief valve.
The present invention is achieved in that its core texture can be installed on the pump housing or valve body;
When its core texture is installed on the pump housing, its structure is: mounting limit screw plug, differential spool in the pump housing, and differential valve in-core is installed pressure adjusting spring, and pressure regulation pad, mounting O-shaped rings on spacing screw plug are installed in pressure adjusting spring end; In the pump housing, be provided with oil suction chamber, filler opening, working hole, spring chamber, unloading cavity, oil back chamber, return opening; Differential spool is provided with oil through.
When its core texture is installed on valve body, its structure is: differential spool is installed in valve pocket, and differential valve in-core is installed pressure adjusting spring, and pressure regulation pad is installed in pressure adjusting spring end, and valve pocket is installed pressure regulating screw, nut; Pressure regulation gasket-end is installed O type circle, high pressure back-up ring; In the pump housing, be provided with oil suction chamber, filler opening, working hole, spring chamber, unloading cavity, oil back chamber, return opening; Differential spool is provided with oil through.
The invention has the advantages that:
1, adopt the unique differential constant current hydraulic pressure of positive displacement pressure-acting area innovative principle (see figure 2), innovation structure (see figure 1).Simple in structure, reduced number of spare parts, reduced manufacture cost.
2, because this invention is without damping hole, reduced the pressure loss of hydraulic control, superior contamination resistance, functional reliability and the mechanical efficiency of raising hydraulic system.
3, principle of the present invention and structure and existing structure have reduced number of spare parts, are widely used in the hydraulic steering pumps such as gear pump, vane pump, plunger pump, screw pump.Be the revolution of motor turning power-assisted hydraulic control technology, be applicable to automotive industry and the running mechanism field of production capacity maximum, there is huge economic benefit and social benefit.
4, differential plug-in mounting screw thread relief valve of the present invention (is shown in Fig. 3; 4) be applicable to pressure restriction and the safety protection of various hydraulic systems; Reduce cost, reduced throttling noise, obviously improved the reliability of hydraulic system.
Accompanying drawing explanation
Fig. 1 is differential constant current power assistance pump for steering structural representation of the present invention;
Fig. 2 is differential constant current power assistance pump for steering hydraulic schematic diagram of the present invention;
Fig. 3 is differential thread plug-in mounting structure of relief valve schematic diagram of the present invention;
Fig. 4 is the hydraulic schematic diagram of differential thread plug-in mounting relief valve of the present invention.
Embodiment
One. differential constant current power assistance pump for steering embodiment:
The interior mounting limit screw plug 5 of the pump housing 1, differential spool 2, the interior installation pressure adjusting spring 3 of differential spool 2, pressure regulation pad 4, mounting O-shaped rings 6 on spacing screw plug 5 are installed in pressure adjusting spring 3 ends; In the pump housing 1, be provided with oil suction chamber a, oil inlet P, working hole F, spring chamber c, unloading cavity d, oil back chamber e, oil return inlet T; Differential spool 2 is provided with oil through b.
The job control process of the present embodiment is as follows:
1, permanent flow control function
When hydraulic oil P enters a, supply with working hole F, by a, by b hole, enter spring chamber c, oil return inlet T and e chamber simultaneously; D chamber communicates.When working pressure is during higher than setting pressure, different from the constant current spool active area in c chamber due to a chamber, under same equal pressure, produce the differential displacement of constant current spool Compress Spring, make P and T shunting off-load, off-load flow depends on the speed of motor, thereby keeps the constant flow rate to commutator.
2, safety protection control function
When auto steerer is during at meta (not turning to work).The off-load of steering pump full flow, safety valve effect.
Two, differential thread plug-in mounting relief valve embodiment:
The differential spool 2 of the interior installation of valve pocket 1, the interior installation pressure adjusting spring 3 of differential spool 2, pressure regulation pad 4 is installed in pressure adjusting spring 3 ends, and valve pocket 1 is installed pressure regulating screw 5, nut 6; Pressure regulation pad 4 ends are installed O type circle 7, high pressure back-up ring 8; In the pump housing 1, be provided with oil suction chamber a, oil inlet P, working hole F, spring chamber c, unloading cavity d, oil back chamber e, oil return inlet T; Differential spool 8 is provided with oil through b.
The job control process of the present embodiment is as follows:
Flow control function overflows: when hydraulic oil P enters by oil through b, enter spring chamber c, oil return inlet T communicates with oil back chamber e, unloading cavity d.When working pressure is during higher than setting pressure, because oil through b is different from the differential spool active area of spring chamber c, under same equal pressure, produce the differential displacement of constant current spool Compress Spring, make P and T overflow; When pressure is during lower than setting pressure, at the effect allowance below nominal size movable valve plug of pressure adjusting spring power, reset, P and T close, to hydraulic system safety protection effect.
Claims (2)
1. the differential constant current power assistance pump for steering of automobile, is characterized in that, mounting limit screw plug, differential spool in the pump housing, and differential valve in-core is installed pressure adjusting spring, and pressure regulation pad, mounting O-shaped rings on spacing screw plug are installed in pressure adjusting spring end; In the pump housing, be provided with oil suction chamber, filler opening, working hole, spring chamber, unloading cavity, oil back chamber, return opening; Differential spool is provided with oil through.
2. a differential thread plug-in mounting relief valve; It is characterized in that, differential spool is installed in valve pocket, and differential valve in-core is installed pressure adjusting spring, and pressure regulation pad is installed in pressure adjusting spring end, and valve pocket is installed pressure regulating screw, nut; Pressure regulation gasket-end is installed O type circle, high pressure back-up ring; In the pump housing, be provided with oil suction chamber, filler opening, working hole, spring chamber, unloading cavity, oil back chamber, return opening; Differential spool is provided with oil through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410010932.4A CN103758807A (en) | 2014-01-10 | 2014-01-10 | Automobile differential constant-current steering booster pump or threaded differential relief cartridge valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410010932.4A CN103758807A (en) | 2014-01-10 | 2014-01-10 | Automobile differential constant-current steering booster pump or threaded differential relief cartridge valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103758807A true CN103758807A (en) | 2014-04-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410010932.4A Pending CN103758807A (en) | 2014-01-10 | 2014-01-10 | Automobile differential constant-current steering booster pump or threaded differential relief cartridge valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103758807A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114576402A (en) * | 2022-03-18 | 2022-06-03 | 衢州学院 | Rotary valve type overflow valve with wide pressure regulating range and strong pollution resistance |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3881842B2 (en) * | 2000-12-05 | 2007-02-14 | 株式会社ジェイテクト | Variable displacement pump |
| CN201133503Y (en) * | 2007-12-22 | 2008-10-15 | 陈涵霖 | Automobile hydraulic power-assisted steering pump plug type overflow pressure-stabilizing valve |
| CN102678645A (en) * | 2012-05-31 | 2012-09-19 | 常德中联重科液压有限公司 | Direct-acting overflow valve, direct-acting overflow valve group and hydraulic overflow loop |
| CN202597313U (en) * | 2012-05-14 | 2012-12-12 | 宁波海宏液压有限公司 | Thread plug-in differential relief valve |
| CN103122882A (en) * | 2011-11-18 | 2013-05-29 | 广西柳工机械股份有限公司 | Adjustable pilot overflow valve |
| CN103122880A (en) * | 2011-11-18 | 2013-05-29 | 广西柳工机械股份有限公司 | Adjustable pilot reducing valve |
| WO2013090458A1 (en) * | 2011-12-12 | 2013-06-20 | Parker-Hannifin Corporation | Pressure reducing valve with pressure relief |
-
2014
- 2014-01-10 CN CN201410010932.4A patent/CN103758807A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3881842B2 (en) * | 2000-12-05 | 2007-02-14 | 株式会社ジェイテクト | Variable displacement pump |
| CN201133503Y (en) * | 2007-12-22 | 2008-10-15 | 陈涵霖 | Automobile hydraulic power-assisted steering pump plug type overflow pressure-stabilizing valve |
| CN103122882A (en) * | 2011-11-18 | 2013-05-29 | 广西柳工机械股份有限公司 | Adjustable pilot overflow valve |
| CN103122880A (en) * | 2011-11-18 | 2013-05-29 | 广西柳工机械股份有限公司 | Adjustable pilot reducing valve |
| WO2013090458A1 (en) * | 2011-12-12 | 2013-06-20 | Parker-Hannifin Corporation | Pressure reducing valve with pressure relief |
| CN202597313U (en) * | 2012-05-14 | 2012-12-12 | 宁波海宏液压有限公司 | Thread plug-in differential relief valve |
| CN102678645A (en) * | 2012-05-31 | 2012-09-19 | 常德中联重科液压有限公司 | Direct-acting overflow valve, direct-acting overflow valve group and hydraulic overflow loop |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114576402A (en) * | 2022-03-18 | 2022-06-03 | 衢州学院 | Rotary valve type overflow valve with wide pressure regulating range and strong pollution resistance |
| CN114576402B (en) * | 2022-03-18 | 2023-04-28 | 衢州学院 | Jiang Zhuaifa overflow valve with wide pressure regulating range and pollution resistance |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140430 |