CN104179672A - Horizontal test equipment for oil pump - Google Patents
Horizontal test equipment for oil pump Download PDFInfo
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- CN104179672A CN104179672A CN201410351798.4A CN201410351798A CN104179672A CN 104179672 A CN104179672 A CN 104179672A CN 201410351798 A CN201410351798 A CN 201410351798A CN 104179672 A CN104179672 A CN 104179672A
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Abstract
The invention relates to horizontal test equipment for an oil pump. The horizontal test equipment comprises a rack, a clamp system, a power system, a pipeline system and a detection system, wherein the power system is connected with the clamp system and transmits torque to the clamp system; the oil pump is mounted on the clamp system, and the pipeline system is connected onto the oil pump; a detection system is mounted on the pipeline system and used for detection; the clamp system comprises an adjusting bracket, a drive shaft and a test board, the drive shaft penetrates through the adjusting bracket, one end of the drive shaft is connected to the power system, the other end penetrates through the test board, and a main gear is mounted at the end part, and the drive shaft is made by carbon tempered steel; the oil pump is mounted on the test board, provided with an auxiliary gear meshed with the main gear and tightly attached and sealed on the test board; oil inlet holes and oil outlet holes communicated with the oil pump are formed in the test board; and the pipeline system is connected to entrances of the oil inlet holes and the oil outlet holes respectively. The test equipment is simple in structure, convenient to test, accurate in detection performance and long in service life.
Description
Technical field
The invention belongs to test mechanical technical field, relate to a kind of testing apparatus, particularly the horizontal testing apparatus of a kind of oil pump.
Background technique
Oil pump refers in lubrication system, can force machine oil from oil sump, to deliver to the device of engine movement part, when engine operation, actuation gear on camshaft drives the driving gear of oil pump, make to be fixed on the driving gear rotation on driving gear shaft, thereby drive the reciprocal rotation of driven tooth crop rotation, by machine oil from oil suction chamber along backlash and pump wall deliver to out oil pocket.Like this, oil suction chamber place just forms low pressure and produces suction, the machine oil inspiration oil pocket in oil sump.Because driving and driven gear constantly rotates, machine oil is just constantly pressed to the position needing.
Chinese patent CN201281013Y discloses a kind of lubricating oil pump performance test desk, comprise stand, operating table, operation display panel, electric control box, electric transmission machanism, pressure transmitter, electronic sensor, fixture, described electric transmission machanism includes Timing Belt, variable-frequency motor, coupling, it is characterized in that: be provided with filter, reduction valve, the pneumatic triple piece that oil sprayer forms, also be provided with clamping cylinder and pressurized container, between pneumatic triple piece and clamping cylinder for gas circuit is connected, clamping cylinder, pressurized container, pressure transmitter is followed successively by gas circuit and connects, pressure transmitter and described pneumatic triple piece with described PLC programming controller for being electrically connected to.
Adopt above-mentioned test system and test oil pump, employing air is medium, can not effectively reflect that oil pump is in the working condition of actual motion state, and test performance is not accurate enough; Oil pump assembly department to be measured is enough convenient.
Summary of the invention
The object of the invention is to have the problems referred to above for existing technology, proposed a kind of horizontal testing apparatus of oil pump accurate, good stability of testing.
Object of the present invention can realize by following technical proposal: the horizontal testing apparatus of a kind of oil pump, comprise frame, rack-mounted chucking appliance system, power system, pipe-line system and detection system, power system connection transmitting torque are to chucking appliance system, oil pump is arranged on chucking appliance system and pipe-line system is connected in oil pump, detection system is arranged in pipe-line system and detects, it is characterized in that, described chucking appliance system comprises adjusting support, transmission shaft and test board, described transmission shaft runs through adjusting support, and one end of transmission shaft is connected to power system, the other end of transmission shaft is through test board and in the end of transmission shaft, master gear is installed, described transmission shaft is made by carbon Hardened And Tempered Steel, described oil pump is arranged on pinion is installed on test board and in oil pump, described master gear and pinion engagement, described oil pump is adjacent to and is sealed on test board, on described test board, offer the oil inlet hole and the oil outlet that are communicated to oil pump, described pipe-line system is connected on the entrance of oil inlet hole and oil outlet, wherein, the carbon Hardened And Tempered Steel of described transmission shaft is grouped into by the one-tenth of following weight percentage: C:0.37-0.40%, Si:0.20-0.30%, Mn:1.0-1.5%, Ni:0-0.1%, Cu:0-0.3%, Cr:0.85-1.0%, Mo:0.20-0.25%, V:0.05-0.12%, Al:0-0.12%, W:0.8-1.2%, surplus is Fe and inevitable impurity element.
Transmission shaft in the horizontal testing apparatus of oil pump of the present invention adopts carbon Hardened And Tempered Steel to make, described carbon Hardened And Tempered Steel has added Mo, V, Al, W element on the basis of 45 steel, and improved the content of Mn, Cr, reduce C content, further define the content of other elements, so that transmission shaft of the present invention carbon Hardened And Tempered Steel compatibility used is more reasonable, the transmission shaft making has the combination properties such as fabulous intensity, hardness, wear resistance, hardenability, reach and improve testing apparatus working life, and save production cost, energy saving.
Wherein, in transmission shaft carbon Hardened And Tempered Steel, Kohlenstoffgehalt should be at least 0.35%, and preferably 0.37%, so that described carbon Hardened And Tempered Steel obtains satisfied hardness and intensity.Kohlenstoffgehalt should not surpass 0.45%, preferably must not surpass 0.40%.When Kohlenstoffgehalt increases, the modified Yield Of Steel of carbon and tensile strength raise, but plasticity and impact reduction, when Kohlenstoffgehalt is too high, the corrosion resistance variation of carbon Hardened And Tempered Steel.
Transmission shaft carbon Hardened And Tempered Steel has added the element Cr, Mn, Ni, Si etc. that improve hardenability, and these alloying elements, except improving hardenability, can also form alloy ferrite, improve the intensity of carbon Hardened And Tempered Steel.
Add 0.85-1.0%Cr can significantly improve intensity, the hardness of transmission shaft carbon Hardened And Tempered Steel, can guarantee again plasticity and the toughness of this alloyed steel, and improve wear resistance, oxidative stability and the corrosion resistance of carbon Hardened And Tempered Steel, also can improve the temper resistance of carbon Hardened And Tempered Steel.
Put forward in right amount the processibility that high Mn content can improve carbon Hardened And Tempered Steel, make it have enough toughness, and can improve tensile strength, hardness and the quenching property of carbon Hardened And Tempered Steel.Excessive manganese can weaken the anti-corrosion capacity of carbon Hardened And Tempered Steel on the contrary, and in addition, Cr compares with other elements with Mn, and price is relatively low, and the content that suitably improves Cr and Mn can reduce production costs when not affecting other performances.Therefore described alloyed steel is controlled at 1.0-1.50% by Mn content, and the transmission shaft that carbon Hardened And Tempered Steel is made has good tensile strength, hardness and corrosion resistance.
Nickel is more rare resource, and price is higher, can produce collaborative element according to other elements, suitably adds the nickel of 0-0.1%.Add a small amount of nickel to produce synergy with other elements, improve intensity, the decay resistance of carbon Hardened And Tempered Steel, can keep again good plasticity and toughness, and reduce production costs.
Silicon in carbon Hardened And Tempered Steel is in solid solution condition, with silicon-calcium oxide form, exist, can significantly improve limit of elasticity, yield point and the tensile strength of carbon Hardened And Tempered Steel, known by test of many times, the silicon that adds 0.20-0.30% in carbon Hardened And Tempered Steel of the present invention, with combinations such as molybdenum, chromium, be improved hardness, corrosion resistance and the oxidation resistant effect of transmission shaft carbon Hardened And Tempered Steel, and improve the heat resistance of transmission shaft carbon Hardened And Tempered Steel.
Copper can improve intensity and the toughness of carbon Hardened And Tempered Steel, hot-short but excessive copper can make carbon Hardened And Tempered Steel easily produce, and therefore can produce collaborative element according to other elements, suitably selects to add 0-0.30%Cu.
In transmission shaft carbon Hardened And Tempered Steel, add 0-0.12%Al, share with chromium, silicon, not only can crystal grain thinning, improve the impact toughness of carbon Hardened And Tempered Steel, can also improve the high-temperature corrosion resistance performance of carbon Hardened And Tempered Steel.
And V can form carbide with carbon, can not only crystal grain thinning, improve intensity and the toughness of transmission shaft, can also under High Temperature High Pressure, improve its decay resistance.
Because the carbon Hardened And Tempered Steel containing Ni, Cr, Mn easily produces temper brittleness when high-temperature tempering slow cooling, therefore need in carbon Hardened And Tempered Steel, add Mo, W to prevent the generation of temper brittleness.
Transmission shaft carbon Hardened And Tempered Steel adds the molybdenum of 0.20-0.25%, can make the grain refinement of alloyed steel, thereby improves mechanical property, especially hardenability, fragility, intensity and the creep resisting ability of transmission shaft.
W is than great, and the Tungsten carbite forming with carbon has very high hardness and wear resistance, can significantly improve hardness and the heat resistance of transmission shaft carbon Hardened And Tempered Steel.
Because the Kohlenstoffgehalt of transmission shaft carbon Hardened And Tempered Steel is lower, manganese content is higher, so need the strict content of controlling impurity, especially S, P.Described inevitable impurity is the S that is not more than 0.025% P and is not more than 0.02%.
As preferably, described transmission shaft is grouped into by the one-tenth of following weight percentage: C:0.38%, Si:0.25%, Mn:1.20%, Ni:0.08%, Cu:0.20%, Cr:0.90%, Mo:0.22%, V:0.08%, W:1.00%, surplus is Fe and inevitable impurity element.
As preferably, described transmission shaft is grouped into by the one-tenth of following weight percentage: C:0.37%, Si:0.30%, Mn:1.50%, Ni:0.02%, Cu:0.05%, Cr:0.90%, Mo:0.22%, V:0.05%, Al:0.05%, W:1.20%, surplus is Fe and inevitable impurity element.
As preferably, described transmission shaft is grouped into by the one-tenth of following weight percentage: C:0.40%, Si:0.20%, Mn:1.00%, Cu:0.30%, Cr:1.00%, Mo:0.20%, V:0.12%, Al:0.10%, W:0.80%, surplus is Fe and inevitable impurity element.
As preferably, described transmission shaft is grouped into by the one-tenth of following weight percentage: C:0.39%, Si:0.27%, Mn:1.3%, Ni:0.07%, Cr:0.95%, Mo:0.25%, V:0.07%, Al:0.07%, W:1.0%, surplus is Fe and inevitable impurity element.
In the horizontal testing apparatus of above-mentioned oil pump, the preparation method of described transmission shaft comprises the steps:
S1, according to the constituent of above-mentioned transmission shaft and weight percent thereof, match well and get raw material, raw material fragmentation is refined into metallic dust, and under hydrogen or vacuum condition, by short grained powder make large particle or granule;
S2, the large particle making in step S1 or a granule powder are pressed into transmission shaft blank under the pressure of 450MPa-500MPa, and at 1050 ℃-1100 ℃ sintering 2-4 hour;
S3, the transmission shaft blank after sintering in step S2 is carried out respectively to rough turn, half finish turning, then heat-treat, heat treatment is: at 680-720 ℃ of high-temperature tempering 2-3 hour, normalizing 4-5 hour at 860-880 ℃, come out of the stove air cooling to the 830-850 ℃ of 2-3 hour that quenches, first in water, be cooled to 580-620 ℃ again oil cooling to room temperature; Tempering 2-4 hour at 580-630 ℃, air cooling obtains the transmission shaft in the horizontal testing apparatus of oil pump.
Heat treated metallographic structure is tempered sorbite, and this tissue has the good fit of intensity, plasticity and toughness, therefore can improve mechanical properties of materials, eliminates residual stress and the processibility of improving metal.Wherein high-temperature tempering can be eliminated the internal stress existing because of forging rolling, reduces hardness, facilitates cutting.
And the reason that affects transmission shaft hardening crack has the imperfection of transmission shaft heat treatment process, heating-up temperature, holding time, cooling medium etc., topmost reason is the impact that the metallographic structure of quenching temperature alloy, hardness and distortion, cracking cause.Prior heat treatment process is generally about 850 ℃ quenchings, temperature drift, and heating time is slightly long, and it is slightly overheated easily to cause, and when austenitizing, easily makes austenite crystal thick; During quenching, the rate of cooling of carbon Hardened And Tempered Steel itself is slow.In prior heat treatment, quenching temperature is 800-820 ℃, and cooling medium is water or salt solution, and water temperature is room temperature, through constantly test discovery, easily there is quenching crack in various degree in such temper, easily cause many waste products, serious waste material in actual production.And carbon Hardened And Tempered Steel is not incubated quenching immediately after reaching quenching temperature in heat treatment of the present invention, and adopt the transmission shaft that profit double quenching is about to heat first in water, to stop certain hour, be cooled to 580-620 ℃, then oil cooling is to room temperature, in water, cooling object is not make undercooled austenite generation perlitic transformation, reduce structural stress, thereby make not hardening crack of transmission shaft.
In the horizontal testing apparatus of above-mentioned oil pump, described test board comprises fixed plate and perpendicular to the mounting plate of fixed plate, described fixed plate is connected in frame, oil inlet hole and oil outlet are opened in respectively on the bi-side of mounting plate, connecting rod is also installed on described oil outlet, and described connecting rod is connected to pipe-line system.
In the horizontal testing apparatus of above-mentioned oil pump, the cross section of described connecting rod is hexagon and offers along the center line of connecting rod the through hole running through, and offers the mounting hole that is communicated to through hole on the side of connecting rod, on described mounting hole, detecting sensor is installed.
In the horizontal testing apparatus of above-mentioned oil pump, described adjusting support comprises that fitting seat is with vertical and be fixed on the dunnage of fitting seat, on described fitting seat, guide pad is installed, in described frame, guide plate is installed, on described guide plate, offer guiding groove, described fitting seat is arranged on guide plate and guide pad is limited in guiding groove, and described transmission shaft is arranged in dunnage and the axis of transmission shaft is parallel to guiding groove.
In the horizontal testing apparatus of above-mentioned oil pump, described transmission shaft comprises coupling shaft, connecting sleeve and output shaft, described coupling shaft is arranged in dunnage, the two ends of connecting sleeve are set in respectively on coupling shaft and output shaft, and coupling shaft can be arranged on the length in connecting sleeve along the axial adjustment of connecting sleeve.
In the horizontal testing apparatus of above-mentioned oil pump, on described mounting plate, offer rotary shaft hole and with the bearing hole of rotary shaft hole coaxial line, the opening of described bearing hole is towards the attachment face of oil pump, bearing and bearing are installed on described output shaft to be fixed in bearing hole, the degree of depth of described bearing hole is greater than the thickness of bearing, the master gear that described output the tip of the axis is installed and pinion engagement.
In the horizontal testing apparatus of above-mentioned oil pump, described pipe-line system comprises fuel tank, the first conduit group, the second conduit group, filter, flowmeter and safety return-flow valve, on described oil inlet hole, fuel sucking pipe is installed, the end of fuel sucking pipe is communicated to fuel tank, described connecting rod is communicated with filter and safety return-flow valve by the first conduit group, and be back in fuel tank through the second conduit group, in described the first conduit group and the second conduit group, be communicated with the 3rd conduit group, described safety return-flow valve is arranged in the 3rd conduit group.
In the horizontal testing apparatus of above-mentioned oil pump, described the first conduit group comprises No. two conduits of conduit of " L " shape and " U " font of horizontal, a described conduit is connected with the tee union that passes through of No. two conduits, the end of a described conduit is connected to connecting rod, described No. two conduits are connected to filter, described filter is communicated to flowmeter, described the second conduit group comprises No. three conduits of " U " font of horizontal and No. four conduits of " U " font of back-off, described No. three conduits are connected by No. two tee unions with No. four conduits, the end of No. three conduits is connected to flowmeter, the end of No. four conduits is connected to fuel tank, described safety return-flow valve is arranged between a tee union and No. two tee unions, the axis of the axis of No. two conduits and No. three conduits and safety return-flow valve are in the same plane.
In the horizontal testing apparatus of above-mentioned oil pump, described fuel tank comprises casing, is arranged on temperature controlling device and temperature transducer on casing, and the equal Electricity Federation of described temperature controlling device and temperature transducer is to detection system.
In the horizontal testing apparatus of above-mentioned oil pump, in described frame, be provided with control panel, described detection system is arranged on control panel, described detection system comprises temp controlled meter, tachometer, timer and flow instrument, described temp controlled meter connects temperature controlling device and shows and control oil liquid temperature, tachometer shows the rotating speed of exporting in power system, and described flow instrument shows the data on flows in pipeline, and described timer record oil pump is moved the test time in each stage.
Compared with prior art, the present invention has following advantage:
1, adopt the master gear on transmission shaft to drive the pinion in oil pump, the running of pinion energy driven gear pump makes fluid from oil hydraulic pump and then the testing hydraulic pump performance of flowing through, convenient test.
2, be provided with test board, oil pump is directly adjacent on test board, and fluid can enter oil inlet hole and oil outlet directly enters in oil pump, simple in structure, convenient test.
3, connecting rod is installed on oil outlet, easy to connect with pipeline, be also convenient to installation and measuring sensor.
4, coupling shaft can be arranged on the length in connecting sleeve along the axial adjustment of connecting sleeve, and guide pad is limited to guiding groove, makes coupling shaft regulate length and location along axial direction, adapts to the oil pump of different model.
5, the length that bearing hole can regulation output shaft extension goes out test board is set, regulates simple.
6, the temperature that temperature controlling device and temperature transducer can detect fuel tank inner fluid is set, controls the stickiness of fluid well, keep mobility, make the detection performance of oil pump accurate.
7, transmission shaft adopts the rational carbon Hardened And Tempered Steel of compatibility, Mo, V, Al, W element on the basis of 45 steel, have been added, and improved the content of Mn, Cr, reduce C content, further define the content of other elements, and make the transmission shaft making there is the combination properties such as fabulous intensity, hardness, wear resistance, hardenability by specific preparation method, thereby reach, improve testing apparatus working life, and save production cost, energy saving.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is internal structure schematic diagram of the present invention.
Fig. 3 is the structural representation of chucking appliance system and pipe-line system in the present invention.
Fig. 4 is the sectional structure schematic diagram of chucking appliance system and power system in the present invention.
Fig. 5 is the structural representation of test board in the present invention.
In figure, 10, frame; 20, power system; 21, motor; 22, large synchronous pulley; 23, small synchronous pulley; 24, synchronous belt; 25, coupling; 26, guide plate; 261, guiding groove; 27, line shaft; 30, chucking appliance system; 31, test board; 311, mounting plate; 312, fixed plate; 313, bearing hole; 314, connecting rod; 315, mounting hole; 316, oil outlet; 317, oil inlet hole; 318, front surface; 319, side; 32, transmission shaft; 321, connecting sleeve; 322, coupling shaft; 323, output shaft; 33, regulate support; 331, fitting seat; 332, dunnage; 34, master gear; 40, oil pump; 41, pinion; 50, detection system; 51, tachometer; 52, timer; 53, temp controlled meter; 54, flow instrument; 60, pipe-line system; 61, the first conduit group; 611, a tee union; 612, No. two conduits; 613, a conduit; 62, the second conduit group; 621, No. three conduits; 622, No. four conduits; 63, the 3rd conduit group; 631, No. two tee unions; 64, fuel sucking pipe; 65, safety return-flow valve; 66, filter; 67, flowmeter; 68, fuel tank; 681, temperature transducer; 682, temperature controlling device; 683, casing.
Embodiment
Be below specific embodiments of the invention by reference to the accompanying drawings, technological scheme of the present invention is further described, but the present invention be not limited to these embodiments.
As depicted in figs. 1 and 2, the horizontal testing apparatus of this oil pump, comprise frame 10, be arranged on chucking appliance system 30, power system 20, pipe-line system 60 and detection system 50 in frame 10, power system 20 is connected on chucking appliance system 30, oil pump 40 is arranged on chucking appliance system 30 and pipe-line system 60 is connected in oil pump 40, and detection system 50 is arranged on and in pipe-line system 60, detects and show by the instrument being arranged in frame 10.
Chucking appliance system 30 comprises adjusting support 33, transmission shaft 32 and test board 31, regulate support 33 to comprise that fitting seat 331 is with vertical and be fixed on the dunnage 332 of fitting seat 331, on the bottom surface of fitting seat 331, guide pad is installed, guide plate 26 is installed in frame 10, on guide plate 26, offer guiding groove 261, fitting seat 331 is arranged on guide plate 26 and guide pad is limited in guiding groove 261, regulate support 33 to move along guiding groove 261, transmission shaft 32 is arranged in dunnage 332 and the axis of transmission shaft 32 is parallel to guiding groove 261.Regulate support 33 to move along guiding groove 261, can regulate the front and back position of test board 31, adjust the mounting point of test board 31 and pipe-line system 60.
Test board 31 comprises fixed plate 312 and perpendicular to the mounting plate 311 of fixed plate 312, fixed plate 312 is connected in frame 10, oil inlet hole 317 and oil outlet 316 are opened in respectively on the bi-side 319 of mounting plate 311, the outlet of oil inlet hole 317 and oil outlet 316 is arranged on the front surface 318 of mounting plate 311, front surface 318 connects and perpendicular to bi-side 319, on mounting plate 311, offer rotary shaft hole and with the bearing hole 313 of rotary shaft hole coaxial line, bearing hole 313 is offered perpendicular to the front surface 318 of mounting plate 311, oil pump 40 be located on front surface 318 and the attachment face of oil pump 40 and front surface 318 mutually push against and seal, connecting rod 314 is also installed on oil outlet 316, the cross section of connecting rod 314 is hexagon and offers along the center line of connecting rod 314 through hole running through, on the side 319 of connecting rod 314, offer the mounting hole 315 that is communicated to through hole, on mounting hole 315, detecting sensor is installed, connecting rod 314 is connected to pipe-line system 60.Oil pump 40 is adjacent to and is sealed on mounting plate 311, easy for installation, and the oil suction chamber of the outlet alignment machine oil pump 40 of oil inlet hole 317 and oil outlet 316 and go out oil pocket is simple in structure.
Transmission shaft 32 comprises coupling shaft 322, connecting sleeve 321 and output shaft 323, coupling shaft 322 is arranged in dunnage 332, one end of coupling shaft 322 is connected to power system 20, the other end of coupling shaft 322 is arranged on one end of connecting sleeve 321, one end of output shaft 323 is arranged on the other end of connecting sleeve 321, and coupling shaft 322 can be arranged on the length in connecting sleeve 321 along the axial adjustment of connecting sleeve 321, bearing and bearing are installed on the other end of output shaft 323 to be fixed in bearing hole 313, the degree of depth of bearing hole 313 is greater than the thickness of bearing, output shaft 323 is through mounting plate 311 and in the end of transmission shaft 32, master gear 34 is installed.
Oil pump 40 is arranged on mounting plate 311 and in the rotating shaft of the main impeller of oil pump 40, pinion 41 is installed, thereby master gear 34 is with pinion 41 engagements and can the impeller of oil pump 40 can be rotated driving torque, oil pump 40 is adjacent to and is sealed on mounting plate 311, the oil suction chamber of oil pump 40 with go out oil pocket and be communicated to respectively oil inlet hole 317 and the oil outlet 316 on front surface 318, pipe-line system 60 is connected on the oil inlet hole 317 of mounting plate 311 both sides and the entrance of oil outlet 316.Connecting sleeve 321 is set, effectively adjusts the distance of test board 31, bearing hole 313 is set and can adjusts the outreach of master gear 34 on transmission shaft 32 and make master gear 34 and pinion 41 engagements.
Pipe-line system 60 comprises fuel tank 68, the first conduit group 61, the second conduit group 62, the 3rd conduit group 63, filter 66, flowmeter 67 and safety return-flow valve 65, fuel sucking pipe 64 is installed on oil inlet hole 317, the end of fuel sucking pipe 64 is communicated to fuel tank 68, connecting rod 314 is communicated with filter 66 and safety return-flow valve 65 by the first conduit group 61, and be back in fuel tank 68 through the second conduit group 62, in the first conduit group 61 and the second conduit group 62, be communicated with the 3rd conduit group 63, safety return-flow valve 65 is arranged in the 3rd conduit group 63.
The first conduit group 61 comprises No. two conduits 612 of conduit 613 of " L " shape and " U " font of horizontal, No. one conduit 613 is connected with the tee union 611 that passes through of No. two conduits 612, the end of a conduit 613 is connected to connecting rod 314, No. two conduit 612 is connected to filter 66, filter 66 is communicated to flowmeter 67, the second conduit group 62 comprises No. three conduits 621 of " U " font of horizontal and No. four conduits 622 of " U " font of back-off, No. three conduit 621 is connected by No. two tee unions 631 with No. four conduits 622, the end of No. three conduits 621 is connected to flowmeter 67, the end of No. four conduits 622 is connected to fuel tank 68, safety return-flow valve 65 is arranged between a tee union 611 and No. two tee unions 631, the axis of the axis of No. two conduits 612 and No. three conduits 621 and safety return-flow valve 65 are in the same plane.Oil pump 40 is arranged in pipe-line system 60 and for pipe-line system 60 provides power, and pipe-line system 60 is by the performance of the detection oil pump 40 of liquid.
Fuel tank 68 comprises casing 683, is arranged on temperature controlling device 682 and temperature transducer 681 on casing 683, and temperature controlling device 682 and the equal Electricity Federation of temperature transducer 681 are to detection system 50.
In frame 10, be provided with control panel, detection system 50 is arranged on control panel, detection system 50 comprises temp controlled meter 53, tachometer 51, timer 52 and flow instrument 54, temp controlled meter 53 connects temperature controlling devices 682 and shows and control oil liquid temperature, tachometer 51 shows the rotating speed of output in power system 20, data on flows in flow instrument 54 display system pipelines 60, the test time in 52 40 each stages of operation of logging machine oil pump of timer.
Power system 20 comprises motor 21, is arranged on the large synchronous pulley 22 on motor 21 output shafts 323 and is arranged on the line shaft 27 in frame 10, one end of line shaft 27 is provided with small synchronous pulley 23, between large synchronous pulley 22 and small synchronous pulley 23, synchronous belt 24 is installed, the other end of line shaft 27 is provided with coupling 25 and is connected to transmission shaft 32.Synchronous belt 24 can effectively be controlled the rotating speed of line shaft 27, and rotating speed is accurate.
Wherein, in the horizontal testing apparatus of above-mentioned oil pump, transmission shaft 32 is made by carbon Hardened And Tempered Steel, its one-tenth by following weight percentage is grouped into: C:0.37-0.40%, Si:0.20-0.30%, Mn:1.0-1.5%, Ni:0-0.1%, Cu:0-0.3%, Cr:0.85-1.0%, Mo:0.20-0.25%, V:0.05-0.12%, Al:0-0.12%, W:0.8-1.2%, surplus is Fe and inevitable impurity element.
Table 1: embodiment 1-4 is for the preparation of constituent and the mass percent of transmission shaft
Embodiment 1
According to the constituent of transmission shaft carbon Hardened And Tempered Steel described in table 1 embodiment 1 and mass percent thereof, join and get raw material, raw material fragmentation is refined into metallic dust, and under hydrogen or vacuum condition, short grained powder is made to large particle or granule;
The above-mentioned large particle making or a granule powder are pressed into transmission shaft blank under the pressure of 450MPa, and at 1050 ℃ sintering 2 hours;
Transmission shaft blank after above-mentioned sintering is carried out respectively to rough turn, half finish turning, then heat-treat, 680 ℃ of high-temperature temperings 2 hours, then normalizing 4 hours at 860 ℃, the air cooling to 830 ℃ of coming out of the stove quenches 2 hours, then first in water, be cooled to 580 ℃ again oil cooling to room temperature; At 580 ℃, tempering is 2 hours, and air cooling obtains the transmission shaft in the horizontal testing apparatus of oil pump.
Embodiment 2
According to the constituent of transmission shaft carbon Hardened And Tempered Steel described in table 1 embodiment 2 and mass percent thereof, join and get raw material, raw material fragmentation is refined into metallic dust, and under hydrogen or vacuum condition, short grained powder is made to large particle or granule;
The above-mentioned large particle making or a granule powder are pressed into transmission shaft blank under the pressure of 470MPa, and at 1060 ℃ sintering 2 hours;
Transmission shaft blank after above-mentioned sintering is carried out respectively to rough turn, half finish turning, then heat-treat, 690 ℃ of high-temperature temperings 2 hours, then normalizing 4 hours at 860 ℃, the air cooling to 830 ℃ of coming out of the stove quenches 2 hours, then first in water, be cooled to 590 ℃ again oil cooling to room temperature; At 590 ℃, tempering is 2 hours, and air cooling obtains the transmission shaft in the horizontal testing apparatus of oil pump.
Embodiment 3
According to the constituent of transmission shaft carbon Hardened And Tempered Steel described in table 1 embodiment 3 and mass percent thereof, join and get raw material, raw material fragmentation is refined into metallic dust, and under hydrogen or vacuum condition, short grained powder is made to large particle or granule;
The above-mentioned large particle making or a granule powder are pressed into transmission shaft blank under the pressure of 490MPa, and at 1080 ℃ sintering 3 hours;
Transmission shaft blank after above-mentioned sintering is carried out respectively to rough turn, half finish turning, then heat-treat, 710 ℃ of high-temperature temperings 3 hours, then normalizing 5 hours at 870 ℃, the air cooling to 850 ℃ of coming out of the stove quenches 3 hours, then first in water, be cooled to 610 ℃ again oil cooling to room temperature; At 620 ℃, tempering is 4 hours, and air cooling obtains the transmission shaft in the horizontal testing apparatus of oil pump.
Embodiment 4
According to the constituent of transmission shaft carbon Hardened And Tempered Steel described in table 1 embodiment 4 and mass percent thereof, join and get raw material, raw material fragmentation is refined into metallic dust, and under hydrogen or vacuum condition, short grained powder is made to large particle or granule;
The above-mentioned large particle making or a granule powder are pressed into transmission shaft blank under the pressure of 500MPa, and at 1100 ℃ sintering 4 hours;
Transmission shaft blank after above-mentioned sintering is carried out respectively to rough turn, half finish turning, then heat-treat, 720 ℃ of high-temperature temperings 3 hours, then normalizing 5 hours at 880 ℃, the air cooling to 850 ℃ of coming out of the stove quenches 3 hours, then first in water, be cooled to 620 ℃ again oil cooling to room temperature; At 630 ℃, tempering is 4 hours, and air cooling obtains the transmission shaft in the horizontal testing apparatus of oil pump.
Comparative example
The transmission shaft making by conventional processing method with 45 steel, wherein the constituent of 45 steel and mass percent are: C:0.42-0.50%, Si:0.17-0.37%, Mn:0.50-0.80%, Cr≤0.25%, Ni≤0.25%, Cu≤0.25%, P≤0.04%, S≤0.04%, surplus is Fe and inevitable impurity element.
The transmission shaft making in embodiment 1-4 is carried out to testing property, and test result is as shown in table 2.
The performance test results of the transmission shaft that table 2: embodiment of the present invention 1-4 makes
In sum, transmission shaft in the horizontal testing apparatus of oil pump of the present invention adopts the rational carbon Hardened And Tempered Steel of compatibility, Mo, V, Al, W element on the basis of 45 steel, have been added, reduce C content and improved the content of Mn, Cr, improved the combination property such as intensity, hardness, wear resistance of transmission shaft, be applied to testing apparatus, extended the working life of testing apparatus.
The horizontal testing apparatus of oil pump of the present invention is carried out to following test event:
1 fuel-displaced time test
After product clamping completes, press " fuel-displaced time test " button, pump main shaft rotates with 250rpm, on system main line, pick out oily time test bypass, be used for testing the fuel-displaced time, fuel-displaced time test bypass is controlled it by manually-operated gate and is opened and closed, simultaneously, with timer 52, coordinate, the time while having oil to occur is the fuel-displaced time of pump.
2 fuel delivery tests
After product clamping completes, revolution speed is adjusted to the rotating speed of setting, the aperture of simultaneously manually adjusting modulating valve makes outlet pressure to specified value, and now the numerical value of flowmeter 67 is the fuel delivery of pump.
3 pressure-limit valve performance characteristic
3.1 pressure limiting valve opening pressure
Setting under test oil temperature and regulation rotating speed, slowly regulate manual tune valve opening, to increase oil outlet pressure, that time when pressure-limit valve oil outlet has oil to flow out, see oil outlet pressure, this pressure is pressure limiting valve opening pressure.
3.2 pressure-limit valve cutoff pressures;
Under the test oil temperature and regulation rotating speed of regulation, load slowly gradually, until the fuel delivery in oil pump 40 outlet ports is while being zero, pump discharge pressure value is now pressure-limit valve cutoff pressure.
3.3 pressure-limit valve performance characteristic
Under the test oil temperature and regulation rotating speed of regulation, pressure-limit valve is started to this section pressure of oil spilling when playing oil pump oil outlet flow and being zero and divide 7 different oil pressure, fuel delivery, the oil temperature while measuring each operating mode after the 30S that turns round respectively, pump pressure and other parameters.
4 rotary speed property tests
The test oil temperature of regulation and regulation pump pressure time, to comprising 7 different rotating speeds of rated engine speed and 110% rated engine speed, fuel delivery, oil temperature, the rotating speed while measuring each operating mode after the 30s that turns round respectively and pump the relevant parameters such as pressure.
5 Pressure characteristics tests
When the test oil temperature of regulation and the rotating speed of regulation, to comprising, demarcate 6 above different oil pressure that pump pressure, fuel delivery, oil temperature, the rotating speed while measuring each operating mode after the 30s that turns round respectively and pump the relevant parameters such as pressure.
The present invention is under original state, according to the model of oil pump 40, adjust the position of the spacing adjustment test board 31 between coupling shaft 322 and connecting sleeve 321, adjust again on transmission shaft 32 engaging position and the velocity ratio between pinion 41 on master gear 34 and oil pump 40, regulate temperature controlling device 682, oil liquid temperature is adjusted suitable, start power supply, motor 21 drives line shaft 27 to rotate by synchronous belt 24, line shaft 27 drives coupling shaft 322 to rotate by coupling 25, coupling shaft 322 drives transmission shaft 32 to rotate by connecting sleeve 321, make master gear 34 drive pinion 41 to rotate, pinion 41 rotates the wheel rotation driving in oil pump 40, fluid enters oil inlet hole 317 through fuel sucking pipe 64, and after tested on plate 31 outlet of oil inlet hole 317 enter into the oil suction chamber of oil pump 40, fluid enters oil outlet 316 from going out oil pocket outflow, the connecting rod 314 of going forward side by side enters pipe-line system 60, record pressure and the flow velocity of fluid, fluid is through the first conduit group 61 flow through filter 66 and flowmeter 67, from flowmeter 67, flow out and enter the second conduit group 62, No. four conduits 622 of going forward side by side are back in fuel tank 68, when pressure in pipeline is excessive, part fluid enters into safety return-flow valve 65 and is back to fuel tank 68 by No. four conduits 622 through the 3rd conduit group 61, the variation that detects fluid in the process of fluid circulation detects the properties of oil pump 40.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various modifications or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (10)
1. the horizontal testing apparatus of oil pump, comprise frame, rack-mounted chucking appliance system, power system, pipe-line system and detection system, power system connection transmitting torque are to chucking appliance system, oil pump is arranged on chucking appliance system and pipe-line system is connected in oil pump, detection system is arranged in pipe-line system and detects, it is characterized in that, described chucking appliance system comprises adjusting support, transmission shaft and test board, described transmission shaft runs through adjusting support, and one end of transmission shaft is connected to power system, the other end of transmission shaft is through test board and in the end of transmission shaft, master gear is installed, described transmission shaft is made by carbon Hardened And Tempered Steel, described oil pump is arranged on pinion is installed on test board and in oil pump, described master gear and pinion engagement, described oil pump is adjacent to and is sealed on test board, on described test board, offer the oil inlet hole and the oil outlet that are communicated to oil pump, described pipe-line system is connected on the entrance of oil inlet hole and oil outlet, wherein, the carbon Hardened And Tempered Steel of described transmission shaft is grouped into by the one-tenth of following weight percentage: C:0.37-0.40%, Si:0.20-0.30%, Mn:1.0-1.5%, Ni:0-0.1%, Cu:0-0.3%, Cr:0.85-1.0%, Mo:0.20-0.25%, V:0.05-0.12%, Al:0-0.12%, W:0.8-1.2%, surplus is Fe and inevitable impurity element.
2. the horizontal testing apparatus of oil pump according to claim 1, is characterized in that, the preparation method of described transmission shaft comprises the steps:
S1, according to the constituent of above-mentioned transmission shaft and weight percent thereof, match well and get raw material, raw material fragmentation is refined into metallic dust, and under hydrogen or vacuum condition, by short grained powder make large particle or granule;
S2, the large particle making in step S1 or a granule powder are pressed into transmission shaft blank under the pressure of 450MPa-500MPa, and at 1050 ℃-1100 ℃ sintering 2-4 hour;
S3, the transmission shaft blank after sintering in step S2 is carried out respectively to rough turn, half finish turning, then heat-treat, heat treatment is: at 680-720 ℃ of high-temperature tempering 2-3 hour, normalizing 4-5 hour at 860-880 ℃, come out of the stove air cooling to the 830-850 ℃ of 2-3 hour that quenches, first in water, be cooled to 580-620 ℃ again oil cooling to room temperature; Tempering 2-4 hour at 580-630 ℃, air cooling obtains the transmission shaft in the horizontal testing apparatus of oil pump.
3. the horizontal testing apparatus of oil pump according to claim 1, it is characterized in that, described test board comprises fixed plate and perpendicular to the mounting plate of fixed plate, described fixed plate is connected in frame, oil inlet hole and oil outlet are opened in respectively on the bi-side of mounting plate, connecting rod is also installed on described oil outlet, and described connecting rod is connected to pipe-line system.
4. the horizontal testing apparatus of oil pump according to claim 3, it is characterized in that, the cross section of described connecting rod is hexagon and offers along the center line of connecting rod the through hole running through, and offers the mounting hole that is communicated to through hole on the side of connecting rod, on described mounting hole, detecting sensor is installed.
5. according to the horizontal testing apparatus of oil pump described in claim 1,3 or 4, it is characterized in that, described adjusting support comprises that fitting seat is with vertical and be fixed on the dunnage of fitting seat, on described fitting seat, guide pad is installed, in described frame, guide plate is installed, on described guide plate, offer guiding groove, described fitting seat is arranged on guide plate and guide pad is limited in guiding groove, and described transmission shaft is arranged in dunnage and the axis of transmission shaft is parallel to guiding groove.
6. the horizontal testing apparatus of oil pump according to claim 5, it is characterized in that, described transmission shaft comprises coupling shaft, connecting sleeve and output shaft, described coupling shaft is arranged in dunnage, the two ends of connecting sleeve are set in respectively on coupling shaft and output shaft, and coupling shaft can be arranged on the length in connecting sleeve along the axial adjustment of connecting sleeve.
7. according to the horizontal testing apparatus of oil pump described in claim 3 or 4, it is characterized in that, on described mounting plate, offer rotary shaft hole and with the bearing hole of rotary shaft hole coaxial line, the opening of described bearing hole is towards the attachment face of oil pump, bearing and bearing are installed on described output shaft to be fixed in bearing hole, the degree of depth of described bearing hole is greater than the thickness of bearing, the master gear that described output the tip of the axis is installed and pinion engagement.
8. according to the horizontal testing apparatus of oil pump described in claim 3 or 4, it is characterized in that, described pipe-line system comprises fuel tank, the first conduit group, the second conduit group, filter, flowmeter and safety return-flow valve, on described oil inlet hole, fuel sucking pipe is installed, the end of fuel sucking pipe is communicated to fuel tank, described connecting rod is communicated with filter and safety return-flow valve by the first conduit group, and be back in fuel tank through the second conduit group, in described the first conduit group and the second conduit group, be communicated with the 3rd conduit group, described safety return-flow valve is arranged in the 3rd conduit group.
9. the horizontal testing apparatus of oil pump according to claim 8, it is characterized in that, described the first conduit group comprises No. two conduits of conduit of " L " shape and " U " font of horizontal, a described conduit is connected with the tee union that passes through of No. two conduits, the end of a described conduit is connected to connecting rod, described No. two conduits are connected to filter, described filter is communicated to flowmeter, described the second conduit group comprises No. three conduits of " U " font of horizontal and No. four conduits of " U " font of back-off, described No. three conduits are connected by No. two tee unions with No. four conduits, the end of No. three conduits is connected to flowmeter, the end of No. four conduits is connected to fuel tank, described safety return-flow valve is arranged between a tee union and No. two tee unions, the axis of the axis of No. two conduits and No. three conduits and safety return-flow valve are in the same plane.
10. the horizontal testing apparatus of oil pump according to claim 8, it is characterized in that, described fuel tank comprises casing, be arranged on temperature controlling device and temperature transducer on casing, the equal Electricity Federation of described temperature controlling device and temperature transducer is to detection system, in described frame, be provided with control panel, described detection system is arranged on control panel, described detection system comprises temp controlled meter, tachometer, timer and flow instrument, described temp controlled meter connects temperature controlling device and shows and control oil liquid temperature, tachometer shows the rotating speed of exporting in power system, described flow instrument shows the data on flows in pipeline, described timer record oil pump is moved the test time in each stage.
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| CN201410351798.4A CN104179672B (en) | 2014-07-22 | 2014-07-22 | Horizontal test equipment for oil pump |
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| CN201410351798.4A CN104179672B (en) | 2014-07-22 | 2014-07-22 | Horizontal test equipment for oil pump |
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| CN111850413A (en) * | 2020-08-06 | 2020-10-30 | 中南大学 | High-toughness alloy steel easy to weld and resistant to fatigue and preparation method thereof |
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