CN103912488B - One is heavily blocked dump truck steering pump - Google Patents
One is heavily blocked dump truck steering pump Download PDFInfo
- Publication number
- CN103912488B CN103912488B CN201410158861.2A CN201410158861A CN103912488B CN 103912488 B CN103912488 B CN 103912488B CN 201410158861 A CN201410158861 A CN 201410158861A CN 103912488 B CN103912488 B CN 103912488B
- Authority
- CN
- China
- Prior art keywords
- oil
- pump housing
- pump
- inner chamber
- communicated
- 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.)
- Active
Links
Landscapes
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
Abstract
The invention discloses one and heavily block dump truck steering pump, pump housing inner chamber is the ante-chamber high voltage structures of the high back cavity low oil pressure of ante-chamber oil pressure, pump housing rear portion is provided with oil-in and is communicated with pump housing inner chamber rear portion, pump housing front portion is provided with oil-out and is communicated with pump housing inner chamber is anterior, the pump housing is provided with in the pump housing inner chamber outer circumferential sides valve opening that extend front and back, valve opening front end is communicated with pump housing inner chamber is anterior, one pilot-type relief valve is installed in valve opening, in the pump housing, be provided with oil return outer circulation runner, the pump housing is provided with oil return opening and is communicated with oil return outer circulation runner, the overfall of pilot-type relief valve is communicated with oil return outer circulation runner. the present invention adopts three hydraulic fluid ports and strengthens hydraulic fluid port screw thread latus rectum mode, the overflow of oil pump is changed into outer circulation circuit simultaneously, increase the radiating rate on oil pump surface, adopt large discharge capacity and large Output pressure, solved and heavily blocked self-unloading vehicle and cause greatly oil pump life short and turn to weight problem because of front axle load.
Description
Technical field
The present invention relates to heavily block dump truck steering pump.
Background technology
At present, along with scientific and technical development, on engine supporting steering pump supporting mining fromThe faults such as hysteresis, hard steering in the process of unloading, are there is turning to. Because domestic processing and manufacturing precision is on the low side,In the situation that steering requires super-pressure, steering pump there will be the even hidden danger of explosion of leakage of oil. Therefore folk prescriptionFace provide the mode of large oil mass by high pressure, be not suitable with Chinese present situation.
There is following shortcoming in traditional automobile hydraulic power steering blade pump at present:
(1) on the pump housing, only have two hydraulic fluid ports, an oil-in, an oil-out, fluid overfall is in inside,Fluid forms inner loop;
(2) cavity volume of the pump housing is less, and long-pending also corresponding the diminishing of logical pasta of inner flow passage, owing to following in fluidRing mode, fluid is in the time circulating at a high speed, and the pressure loss is larger, causes oil pump inner heat too fast;
(3), the pump housing is because wall ratio is thicker, the heat that fluid produces in cyclic process is difficult for distributing, and leadsCause the temperature rise of oil pump entirety too fast, radiating rate is far smaller than electrothermal calefactive rate, causes system temperature and oil pump selfTemperature is more and more higher, and fluid goes bad because excess Temperature produces carbonization, and kinematic viscosity is more and more lower, causes and turnsWear and tear too early to pump internal core part;
(4) smaller (the oil-in screw thread of oil-in screw thread, oil-out screw thread and oil return opening screw thread specificationM27*1.5, oil-out screw thread M18*1.5, oil return opening screw thread M18*1.5), endoporus latus rectum just less than normal,Fluid is very fast at the flow velocity of hydraulic fluid port, causes that back pressure is excessive;
(5), because high pressure chest is in rear end, under hyperpressure Practical Condition, easily produces and reveal or explodeShell phenomenon, causes oil pump moment to lose efficacy, and has potential safety hazard.
Summary of the invention
Technical problem to be solved by this invention is just to provide one and heavily blocks dump truck steering pump, and solution turnsTurn to the problem of hysteresis, hard steering to oil pump.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: one is heavily blocked dump truck and turned toOil pump, comprises the pump housing that rear is uncovered, and front oil distribution casing, stator rotor blade assembly and rear oil distribution casing are by pump shaftAfter being concatenated into successively one after forward direction, be installed in pump housing inner chamber, wherein, rear oil distribution casing and pump housing rear are spaciousSealing between mouthful, pump shaft front end passes the pump housing, between pump shaft front portion and the pump housing, is provided with bearing, and pump shaft is at bearingBetween rear side and the pump housing, be provided with outside framework oil seal, described pump housing inner chamber is the ante-chamber of the high back cavity low oil pressure of ante-chamber oil pressureHigh voltage structures, described pump housing rear portion is provided with oil-in and is communicated with pump housing inner chamber rear portion, and described pump housing front portion is provided withOil-out and pump housing inner chamber are anterior to be communicated with, and the described pump housing is provided with a front and back extension in pump housing inner chamber outer circumferential sidesValve opening, described valve opening front end is communicated with pump housing inner chamber is anterior, and a pilot-type relief valve is installed in described valve opening,In the described pump housing, be provided with oil return outer circulation runner, the described pump housing is provided with oil return opening and oil return outer circulation runner connectsLogical, the overfall of described pilot-type relief valve is communicated with oil return outer circulation runner.
Preferably, the screw thread of described oil-in is M33*2mm, and latus rectum is ￠ 31mm, the spiral shell of described oil-outLine is M20*1.5mm, and latus rectum is ￠ 18.5mm, and the screw thread of described oil return opening is M27*1.5mm, latus rectumFor ￠ 25.5mm.
Preferably, described oil-in and oil return opening are positioned on same radial section, described oil return outer circulation streamBefore and after road, extend, described oil-out is positioned at oil-in rear side.
Preferably, described oil-in and oil return opening center line are parallel to each other, described oil-out on circumferentially nearOil return opening and oil-out center line and oil return opening center line are acute angle angle.
Preferably, be provided with oil sealing neonychium between described outside framework oil seal and bearing, described outside framework oil seal is lipsTwo-man act skeleton-type oil seal, the material of described outside framework oil seal is fluorubber. Adopt double-lip seal form, preventInside and outside two-layer leakage, has improved the reliability of shaft end seal, and high-temperature resistant can reach 240 degrees Celsius.
Preferably, described stator adopts Cr12MoV mould steel. Stator adopts Cr12MoV die steel material,Solve powdered metallurgical material stator curved surface and pulled phenomenon, effectively improved wearability and the product of stator curved surfaceUseful life longevity.
Preferably, described rotor adopts 20CrNiMo. Improve mechanical strength and the impact resistance of material, carryThe high useful life longevity of product.
Preferably, the valve body surface Nickel Plating Treatment of described pilot-type relief valve. Valve body surface and valve opening are increasedWearability, reduce because of the valve body leakage causing of wear and tear the reliability of raising product.
Preferably, in described pilot-type relief valve, valve seat assembly is band double-layer leaching net structure. Can filter oil productIn impurity, the card valve of avoiding product impurity to cause, the very fast phenomenon of wearing and tearing, improves life-span of product;
The present invention adopts three hydraulic fluid ports and strengthens hydraulic fluid port screw thread latus rectum mode, outside the overflow of oil pump being changed into simultaneouslyCirculation circuit, has increased the radiating rate on oil pump surface, adopts large discharge capacity and large Output pressure, solvesHeavily block self-unloading vehicle because front axle load causes greatly oil pump life short and turn to heavy problem, efficiently solve heavilyThe high problem of card dumper oil pump fault rate, in the service life of greatly having improved oil pump, has saved disappearing to resourceConsumption.
In addition, the present invention changes to pump housing front end high pressure chest, and rear end is low-pressure structure, has solved under super-pressureThe fried shell and the leakage problem that when use, produce have been cancelled bonnet, rear oil distribution casing and bonnet simultaneously on original structureChange same entirety into, improved assembling, and saved cost.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the invention will be further described:
Fig. 1 is steering pump cutaway view of the present invention;
Three hydraulic fluid port positions of Fig. 2 pump housing, oil-in, oil-out and oil return opening cutaway view;
Fig. 3 oil return outer circulation flow passage structure cutaway view;
Fig. 4 stator, rotor structure figure.
Detailed description of the invention
Below in conjunction with Fig. 1 to Fig. 4, heavy card dump truck steering pump of the present invention is made and being illustrated.
This heavy card dump truck steering pump comprises the pump housing 1, and the pump housing 1 rear is uncovered, front oil distribution casing 10, fixedSub-rotor blade assembly and rear oil distribution casing 3 are installed to the pump housing by pump shaft 14 after being concatenated into successively one after forward directionIn inner chamber, stator rotor blade assembly is made up of stator 7, rotor 9, blade 8, wherein, rear oil distribution casing withBetween pump housing rear is uncovered, by one 4 sealings of O RunddichtringO, the pump housing is provided with steel wire gear at rear oil distribution casing rear sideCircle 2, is provided with O RunddichtringO 2 11 between front oil distribution casing and the pump housing. Between pump shaft front portion and the pump housing, be provided with axleHold 17, pump shaft is provided with outside framework oil seal 15 between bearing rear side and the pump housing, between described outside framework oil seal and bearingBe provided with oil sealing neonychium 20, described outside framework oil seal is lips two-man act skeleton-type oil seal, the material of described outside framework oil sealMaterial is fluorubber. Bearing 17 front sides are provided with circlip for hole 18, and bearing rear side is provided with circlip for shaft19, pump housing front side is provided with O RunddichtringO 4 16, between front oil distribution casing and the pump housing 1 inner chamber antetheca, is provided with compression bulletSpring 12, and between pump shaft and the pump housing, be provided with O RunddichtringO 3 13, pump shaft rear end is supported in rear oil distribution casing 3,Between pump shaft rear end and rear oil distribution casing 3, be provided with composite bush 6. It is fixed between front oil distribution casing and rear oil distribution casing, to be connected withPosition pin 1 and alignment pin 2 25.
The described pump housing 1 inner chamber is the ante-chamber high voltage structures of the high back cavity low oil pressure of ante-chamber oil pressure, after the described pump housing 1Portion is provided with oil-in A and is communicated with pump housing inner chamber rear portion, and described pump housing front portion is provided with oil-out B and pump housing inner chamberAnterior connection, the described pump housing is provided with in the pump housing inner chamber outer circumferential sides valve opening that extend front and back, before described valve openingEnd is communicated with pump housing inner chamber is anterior, and a pilot-type relief valve 21, this pilot-type relief valve are installed in described valve opening21 are controlled by control spring 22. In the described pump housing, be provided with oil return outer circulation runner D, the described pump housing is provided with backHydraulic fluid port C is communicated with oil return outer circulation runner, the overfall of described pilot-type relief valve and oil return outer circulation runnerBe communicated with, described valve opening is sealed by valve opening screw 24, between described valve opening screw and valve opening, is provided with O RunddichtringO five23。
Type pilot type overflow valve 21 is assemblied in valve opening, plays flow and the safety valve effect controlled. Described guideThe valve body surface Nickel Plating Treatment of type overflow valve. In described pilot-type relief valve, valve seat assembly is band double-layer leaching net knotStructure.
As shown in Figure 3, the present invention, by strengthening oil-in, oil-out, oil return opening, is not increasing steering oilIn the situation of pump work pressure, the fuel delivery in the increase unit interval and too high in steering pump operating pressureTime emptying effectively protect steering pump.
Heavy motor truck oil pump adopts the large pressure output of large discharge capacity, has solved oil pump flow deficiency and has pressedPower problem less than normal, by adopting Cr12MoV stator material and 20CrNiMo rotor material, has solved increasingStress problems, has solved large discharge capacity problem by strengthening stator long and short diameter ratio, by improving rotor strength,Can strengthen the ratio of R/r, the larger discharge capacity of ratio is also just larger.
The present invention has improved steering hysteresis, heavy problem. In process test of many times and theoretical accordinglyAfter calculating, former steering pump is carried out to architecture advances. Oil pump after improvement adapts to making of mining area discharging vehicle moreWith requiring, effectively promote fuel delivery and the off-load amount of steering pump. To the steering of quarry tipperIn use procedure from now on, play good effect.
Above-described embodiment is to explanation of the present invention, is not limitation of the invention, any to letter of the present inventionScheme after monotropic changing all belongs to protection scope of the present invention.
Claims (6)
1. heavily block a dump truck steering pump, comprise the uncovered pump housing in rear (1), front oil distribution casing (10),Stator rotor blade assembly and rear oil distribution casing (3) are pacified after being concatenated into successively one after forward direction by pump shaft (14)Install in pump housing inner chamber, wherein, sealing between rear oil distribution casing (3) and the pump housing (1) rear are uncovered, pump shaft(14) front end passes the pump housing (1), is provided with bearing (17) between pump shaft front portion and the pump housing, and pump shaft is after bearingBetween side and the pump housing, be provided with outside framework oil seal (15), it is characterized in that: after described pump housing inner chamber is ante-chamber oil pressure heightThe ante-chamber high voltage structures of chamber low oil pressure, described pump housing rear portion is provided with oil-in (A) and is communicated with pump housing inner chamber rear portion,Described pump housing front portion is provided with oil-out (B) and is communicated with pump housing inner chamber is anterior, and the described pump housing is at pump housing inner chamber cylindricalWeek, side was provided with the valve opening that extend front and back, and described valve opening front end is communicated with pump housing inner chamber is anterior, in described valve openingOne pilot-type relief valve (21) is installed, in the described pump housing, is provided with oil return outer circulation runner (D), on the described pump housingBe provided with oil return opening (C) and be communicated with oil return outer circulation runner, outside the overfall and oil return of described pilot-type relief valveCirculatory flow is communicated with, and the screw thread of described oil-in is M33*2mm, and latus rectum is ￠ 31mm, described oil-outScrew thread is M20*1.5mm, and latus rectum is ￠ 18.5mm, and described oil return opening screw thread is M27*1.5mm, latus rectumFor ￠ 25.5mm, described oil-in and oil return opening are positioned on same radial section, described oil return outer circulation streamBefore and after road, extend, described oil-out is positioned at oil-in rear side, and described oil-in and oil return opening center line are mutually flatOK, described oil-out is acute angle near oil return opening and oil-out center line with oil return opening center line and presss from both sides on circumferentiallyAngle.
2. one according to claim 1 is heavily blocked dump truck steering pump, it is characterized in that: described skeletonBetween oil sealing and bearing, be provided with oil sealing neonychium (20), described outside framework oil seal (15) is that lips two-man act is skeletonOil sealing, the material of described outside framework oil seal is fluorubber.
3. one according to claim 2 is heavily blocked dump truck steering pump, it is characterized in that: described statorAdopt Cr12MoV mould steel.
4. one according to claim 3 is heavily blocked dump truck steering pump, it is characterized in that: described rotorAdopt 20CrNiMo.
5. one according to claim 1 is heavily blocked dump truck steering pump, it is characterized in that: described guideThe valve body surface Nickel Plating Treatment of type overflow valve (21).
6. one according to claim 5 is heavily blocked dump truck steering pump, it is characterized in that: described guideIn type overflow valve (21), valve seat assembly is band double-layer leaching net structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410158861.2A CN103912488B (en) | 2014-04-21 | 2014-04-21 | One is heavily blocked dump truck steering pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410158861.2A CN103912488B (en) | 2014-04-21 | 2014-04-21 | One is heavily blocked dump truck steering pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103912488A CN103912488A (en) | 2014-07-09 |
| CN103912488B true CN103912488B (en) | 2016-05-18 |
Family
ID=51038419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410158861.2A Active CN103912488B (en) | 2014-04-21 | 2014-04-21 | One is heavily blocked dump truck steering pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103912488B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104129427A (en) * | 2014-07-29 | 2014-11-05 | 芜湖佳景科技有限公司 | Hydraulic power steering pump and steering system thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2685610Y (en) * | 2003-09-26 | 2005-03-16 | 浙江亚伯兰电器有限公司 | Internal spill type vehicle dynamic steering pump |
| JP5216470B2 (en) * | 2008-08-08 | 2013-06-19 | カヤバ工業株式会社 | Variable displacement vane pump |
| CN101988495A (en) * | 2009-08-05 | 2011-03-23 | 广西玉柴机器股份有限公司 | Steering pump of automobile power steering system |
| CN201574928U (en) * | 2009-08-14 | 2010-09-08 | 大连液压件有限公司 | Three-oil-mouth steering vane pump for lowering oil temperature |
| CN202417937U (en) * | 2011-12-29 | 2012-09-05 | 全兴精工集团有限公司 | Power steering pump |
| CN102979728A (en) * | 2012-12-11 | 2013-03-20 | 全兴精工集团有限公司 | Automotive steering oil pump |
| CN203770129U (en) * | 2014-04-21 | 2014-08-13 | 全兴精工集团有限公司 | Novel steering oil pump for heavy dump truck |
-
2014
- 2014-04-21 CN CN201410158861.2A patent/CN103912488B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103912488A (en) | 2014-07-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104405469A (en) | Engine oil pump and engine lubrication system thereof | |
| CN102536802A (en) | Power steering pump | |
| CN103912488B (en) | One is heavily blocked dump truck steering pump | |
| US2865302A (en) | Pressure-loaded gear pump | |
| CN102782326A (en) | Axial sealing element for an internal gear pump | |
| CN203770129U (en) | Novel steering oil pump for heavy dump truck | |
| CN102878077A (en) | Oil distribution disk and cycloid pump using same | |
| CN102095069B (en) | Oil pump with safety regulation integrated valve | |
| CN202417937U (en) | Power steering pump | |
| CN202108942U (en) | Subsection lubrication structure of coal mining machine rocker arm gear cavity | |
| CN102648350B (en) | External gear pump | |
| CN205578387U (en) | Unloading valve is carried to positive and negative turning over | |
| CN100383392C (en) | Axial housing type gear pump mounted with rolling bearing and gear motor | |
| CN102536800B (en) | Steering gear pump | |
| CN207470425U (en) | A kind of fork truck duplex gear pump | |
| CN110397485A (en) | Engine oil pump | |
| CN103994121B (en) | The unnecessary automatic draining structure of hydraulic oil in hydraulic actuator driving chamber | |
| CN108825571A (en) | A kind of load-sensitive gear pump with variable capacity system | |
| CN102102667A (en) | Direct-connected integrated gear pump | |
| CN103629110A (en) | Dual-gear oil pump compensating axial clearance by side plates | |
| CN102996437B (en) | Heavy truck motor truck turning oil pump | |
| CN203549340U (en) | Variable-displacement pump | |
| CN202468300U (en) | Steering gear pump | |
| CN207364244U (en) | A kind of power takeoff being lubricated using helicoidal pump, gearbox or Retarder | |
| CN101608618A (en) | A kind of novel gear pump of composite gear type |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |