CN105840585A - Oil supply hydraulic adjusting device for piston cooling nozzle performance experiment bench - Google Patents
Oil supply hydraulic adjusting device for piston cooling nozzle performance experiment bench Download PDFInfo
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- CN105840585A CN105840585A CN201610349404.0A CN201610349404A CN105840585A CN 105840585 A CN105840585 A CN 105840585A CN 201610349404 A CN201610349404 A CN 201610349404A CN 105840585 A CN105840585 A CN 105840585A
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- Prior art keywords
- oil
- hole
- fuel feeding
- cooling nozzle
- piston cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/005—Fault detection or monitoring
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- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Testing Of Engines (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses an oil supply hydraulic adjusting device for a piston cooling nozzle performance experiment bench. The oil supply hydraulic adjusting device comprises a stepping motor, a lead screw, a top plate, a supporting cylinder, a moving plate, a follow-up cylinder, a moving shaft, an oil blocking cylinder, an oil returning pipe, a linear bearing, a bearing pedestal and an auxiliary oil tank; the auxiliary oil tank is connected with an oil supply source and a piston cooling nozzle, and the bearing pedestal is mounted on the auxiliary oil tank and provided with an oil drainage groove and an oil drainage hole; the moving shaft can vertically move to change the oil drainage amount in the oil drainage groove; the moving shaft is sequentially driven by the follow-up cylinder and the moving plate, and the moving plate is connected with and driven by a rotating shaft of the stepping motor through the lead screw; the stepping motor is adopted to drive the lead screw to rotate, and then drives the moving shaft to vertically move, the oil drainage groove and the oil drainage hole formed in the bearing pedestal are blocked through the moving shaft, the magnitude of the oil drainage output of the oil drainage groove and the oil drainage hole is changed, bypass throttling pressure adjustment can be formed, and therefore the aim of adjusting output pressure is achieved; and running of the device cannot cause temperature rise of detection medium engine oil, and use is easy and convenient.
Description
Technical field
The present invention relates to the adnexa of a kind of piston cooling nozzle performance test stand, particularly relate to a kind of for living
The fuel feeding hydraulic regulating device of plug cooling nozzle performance experimental stand.
Background technology
Piston cooling nozzle (i.e. PCN) is as the important component part of automobile engine, the quality of its performance
Lubrication, the cooling effect of engine movements piston had extremely important effect；Piston cooling nozzle performance
The test curve of experiment is as shown in Figure 1.
Piston cooling nozzle is made up of nozzle body and check valve, based on automobile engine specification, model various
Property, the specification of piston cooling nozzle, model are also a lot, but its version is substantially similar.
The switching characteristic of piston cooling nozzle, discharge characteristic test be exfactory inspection project, it is desirable to all go out
Factory's product carries out 100% one hundred percent inspection test.
The technical specification parameter needing detection includes: open pressure, closing presure, leakage flow, draining stream
Amount and target practice position.
The specification of piston cooling nozzle, model are different, the technical requirement of its parameter difference.It is each
Parameter detecting condition, index request and variable-definition are as shown in table 1:
Table 1 each parameter detecting condition, index request and variable-definition
| Parameter | Testing conditions | Index request |
| Open pressure | Q2 | P∈[P2±ΔP] |
| Close pressure | Q2 | P ＞ P1 |
| Leakage stream | P0 | Q ＜ Q3 |
| Draining stream | P3 | Q ∈ [Q5, Q14] |
| Target practice position | P3 | F≥Fm |
Each technical specification parameter is defined as follows:
Open pressure: flow rises to charge oil pressure value P during regulation flow value Q2 from low to high.
P∈[P2± Δ P] qualified for opening stress test, it is otherwise defective.
Closing presure: flow is dropped to regulation flow value Q on earth by height2Time charge oil pressure value P.P ＞ P1
For closing presure test passes, it is otherwise defective.
Leakage flow: nominative testing pressure value P0Time flow value Q.Q ＜ Q3For leakage flow test passes,
It is otherwise defective.
Draining flow: flow rises to authorized pressure value P from low to high3Time flow value Q.Q∈[Q5, Q14]
Qualified for draining flow rate test, it is otherwise defective.
Target practice position: pressure reaches draining flow rate test pressure value P3Time oil bundle spray into appointment region inside and outside
Flow proportional.The test target practice position measurement device of target practice position is tested, it is thus achieved that oil bundle injection is practiced shooting
Target practice power F, judge that it is the most qualified by the threshold value setting of target practice power.F≥FmIt is qualified for target practice position measurement,
It is otherwise defective.
When carrying out piston cooling nozzle performance test, boost by 1. aerofluxus, 2. low speed blood pressure lowering, 3. low speed,
4. the order of rapid pressure, 5. reduction of blood pressure in high-speed carries out segmentation pressure regulation fuel feeding, surveys in real time during whole
Examination charge oil pressure, flow and target practice power, it is thus achieved that test curve as shown in Figure 1.Each ginseng is extracted from curve
Number testing result corresponding to testing conditions, and judge that it is the most qualified by its technical requirement.
When carrying out piston cooling nozzle performance test, adjustable pressure fueller is necessary.Meanwhile, in order to
Reduce the equipment operating cost of piston cooling nozzle performance test stand, it is desirable to be detection with room temperature automobile engine oil
Medium, machine oil produces temperature rise i.e. to require the running of piston cooling nozzle performance test stand to be not result in.
Traditional adjustable pressure fueller can be summarized as following 4 kinds of structures: uses meter in pressure regulation test
Oil circuit；Use by-pass throttle pressure regulation test oil circuit；Use meter in pressure regulation test oil circuit；Use variable-frequency electric
Machine drives the regulation realizing charge oil pressure.
Above-mentioned Conventional tunable forced feed device all has a disadvantage in that due to motor, oil pump, electromagnetic valve
Deng heating, detection medium machine oil can produce bigger temperature rise.
In order to solve the problems referred to above, present applicant has proposed a kind of machine oil without temperature rise and noise low for piston
Cooling down the air pressure-loading fueller of nozzle performance experimental stand and applied for patent, this apparatus structure is such as
Shown in Fig. 2, including air tank 13, oil-supply valve, oil return valve, oil return fuel tank 11, air intake valve,
Drain tap, barostat 16 and high-pressure air source 15, described air intake valve includes the first air inlet electromagnetic valve
22, first flow inlet angle seat valve the 18, second air inlet electromagnetic valve the 20, second flow inlet angle seat valve 21, described air bleeding valve
Door includes first exhaust electromagnetic valve 31, first exhaust angle pedestal valve 17, second exhaust electromagnetic valve 33, second exhaust
Angle pedestal valve 19, described oil-supply valve includes for solenoid 34 and delivery angle seat valve 23, described oil return valve
Including oil return solenoid valve 32 and oil return angle pedestal valve 12, the space above machine oil in air tank 13 accounts for inflation
/ to three/4th of whole space in fuel tank 13, general volume is 10 liters, air tank 13
Middle and lower part and the oil-in of piston cooling nozzle 5 between fuel feed pump 28 on be provided with delivery angle seat valve 23,
Flow transducer 3 and pressure transducer 4, oil return fuel tank 11 is installed on the jet of piston cooling nozzle 5
Lower section is also positioned at the top of air tank 13, and oil return angle pedestal valve 12 is installed on oil return fuel tank 11 and air tank
On oil return pipe 29 between 13, above the upper position of air tank 13 machine oil in air tank 13
The first flow inlet angle being connected in parallel is installed on the trachea 30 between the gas outlet of position and barostat 16
Seat valve 18 and the second flow inlet angle seat valve 21, the first flow inlet angle seat valve 18 and the second flow inlet angle seat valve 21 and inflation
Interlink on trachea between fuel tank 13 and be connected to two exhaustors (unmarked in figure), first exhaust angle pedestal valve
17 and second exhaust angle pedestal valve 19 be respectively arranged on two exhaustors, the air inlet of barostat 16 with
High-pressure air source 15 connects, and the signal output part of flow transducer 3 and the signal output part of pressure transducer 4 divide
It is not connected with the signal input part of controller (not shown), the control input of the first air inlet electromagnetic valve 22,
Control input, the control input of first exhaust electromagnetic valve 31, the second row of the second air inlet electromagnetic valve 20
The control input of pneumoelectric magnet valve 33, the control input supplying solenoid 34 and the control of oil return solenoid valve 32
Input processed is connected with the control output end of controller respectively, the air inlet of the first air inlet electromagnetic valve 22, second
The air inlet of air inlet electromagnetic valve 20, the air inlet of first exhaust electromagnetic valve 31, second exhaust electromagnetic valve 33
Air inlet, for the air inlet of solenoid 34 and oil return solenoid valve 32 air inlet respectively with barostat
The gas outlet of 16 connects, 22 gas outlets of the first air inlet electromagnetic valve and the control end of the first flow inlet angle seat valve 18
Connecting, the gas outlet of the second air inlet electromagnetic valve 20 is connected with the control end of the second flow inlet angle seat valve 21, and first
The gas outlet of exhaust solenoid valve 31 is connected with the control end of first exhaust angle pedestal valve 17, second exhaust electromagnetic valve
The gas outlet of 33 is connected with the control end of second exhaust angle pedestal valve 19, for gas outlet and the confession of solenoid 34
The control end of oil angle pedestal valve 23 connects, the gas outlet of oil return solenoid valve 32 and the control end of oil return angle pedestal valve 12
Connect, on the trachea at first flow inlet angle seat valve the 18, second flow inlet angle seat valve 21 place and first exhaust angled seat
Valve 17, second exhaust angle pedestal valve 19 place exhaustor on be connected in series with choke valve 8, the first air inlet respectively
The steam vent of electromagnetic valve 22, the steam vent of the second air inlet electromagnetic valve 20, the aerofluxus of first exhaust electromagnetic valve 31
Hole, the steam vent of second exhaust electromagnetic valve 33, for the steam vent of solenoid 34, oil return solenoid valve 32
The air vent of steam vent, the air vent of first exhaust angle pedestal valve 17 and second exhaust angle pedestal valve 19 is respectively mounted
There is the deafener 14 for eliminating exhaust sound.
Though the above-mentioned air pressure-loading fueller for piston cooling nozzle performance test stand is not result in machine oil
Produce temperature rise and achieve the regulation of charge oil pressure, but owing to it utilizes compressibility and air inlet, the row of air
The flow velocity of gas controls to export the loading of charge oil pressure, rate of debarkation, and the piston for different model cools down spray
Mouth, loading, rate of debarkation required for experiment test require difference, it is therefore desirable to carry out correspondence air inlet,
The flow velocity debugging of aerofluxus, owing to the piston cooling nozzle product type needing experiment test is many, needs the most more
Change the product type of piston cooling nozzle, thus need often to carry out the flow velocity debugging of air inlet, aerofluxus, its
During operating cost, make troubles to user.
Summary of the invention
The purpose of the present invention is that provides one to be not result in detecting medium machine oil to solve the problems referred to above
Produce temperature rise and the fuel feeding hydraulic regulating device for piston cooling nozzle performance test stand easy to use.
The present invention is achieved through the following technical solutions above-mentioned purpose:
A kind of fuel feeding hydraulic regulating device for piston cooling nozzle performance test stand, including motor,
Leading screw, top board, support tube, movable plate, follower sleeve, shifting axle, oil blocking barrel, oil return pipe, linear bearing,
Bearing block and auxiliary fuel tank, the oil-in on described auxiliary fuel tank top is connected with the oil-out of fuel feeding oil sources, described pair
The oil-out of fuel tank bottom is connected with the oil-in of piston cooling nozzle, and the base plate of described bearing block is installed on institute
Stating above auxiliary fuel tank, the top of described bearing block is provided with bearing cavity, and described linear bearing is installed on described
In bearing bore body, the center of the base plate of described bearing block is provided with vertical with what described bearing cavity communicated
Bearing block through hole, is provided with the drain pan communicated with described bearing block through hole, described drain pan in described bearing block
Cell wall be provided with simultaneously with the horizontal oil leak hole communicated outside described drain pan and described bearing block, described
The bottom of shifting axle is installed in described linear bearing and can move up and down and the lower end of described shifting axle can
Moving up and down in described drain pan, the upper end of described shifting axle is connected with the lower end of described follower sleeve, described
The upper end of follower sleeve is connected with described movable plate, and the center of described movable plate is provided with vertical screw, institute
The bottom stating leading screw is connected with described screw by self external screw thread, the upper end of described leading screw and described stepping electricity
The rotating shaft of machine connects, and described shelves oil cylinder is installed on described auxiliary fuel tank, and described support tube is installed on described shelves oil
On cylinder, described mounting of roof plate is on described support tube, and described motor is installed on described top board, described
The rotating shaft of motor is through the central through hole of described top board, described leading screw, described movable plate, described servo-actuated
Cylinder, described shifting axle, described linear bearing and described bearing block are placed in described support tube and described oil blocking barrel
In the inner space constituted, the bottom of described shelves oil cylinder is provided with oil drain out, the oil-in of described oil return pipe and institute
The oil drain out stating shelves oil cylinder connects, and the oil-out of described oil return pipe is connected with the oil-in of described fuel feeding oil sources.
In said structure, auxiliary fuel tank, as the intermediate member between oil pump and piston cooling nozzle, is also simultaneously
The necessary parts of fuel feeding hydraulic regulating device of the present invention, the input pressure at auxiliary fuel tank keeps constant feelings
Under condition, changed the oil pressure of its underpart oil-out by the oil pump capacity changing auxiliary fuel tank top, it is achieved pressure regulation mesh
's；Motor is used for driving leading screw to rotate；Leading screw is mobile for being converted to by the rotary power of motor
The vertical lines power of plate, drives movable plate to move up and down；Top board is for support tube top seal and as step
Enter the installation foundation of guide post in motor and following preferred structure；Support tube is used for sealing other corresponding component
And as the installation foundation of other corresponding component；The rotation of motor is moved by movable plate for coordinating with leading screw
Power is converted to straight line power, and drives follower sleeve and shifting axle to move up and down, simultaneously as following preferred structure
In the installation foundation of spacing push rod；Follower sleeve realizes movable plate and shifting for being connected with movable plate and shifting axle
Steady transmission between moving axis；Shifting axle moves up and down for being driven by follower sleeve and passes through its lower end at bearing
Movement in the drain pan of seat changes the oil pump capacity in drain pan, thus realizes changing going out of auxiliary fuel tank top
The purpose of oil mass；Oil blocking barrel is for blocking the fuel-displaced of auxiliary fuel tank top and be expelled to oil pump by oil return pipe
Oil-feed tank；Linear bearing is for realizing freely moving up and down of shifting axle；Bearing block is for sealing pair fuel tank
Top the design basis simultaneously as auxiliary fuel tank top oil outlet mechanism, and utilize the bearing cavity on its top in fact
The removable installation of existing shifting axle.
In order to prevent movable plate displacement during moving up and down from causing the most greatly parts damages, described fuel feeding
Hydraulic regulating device also includes limit switch mounting blocks, upper limit position switch, spacing push rod and lower position switch,
Described limit switch mounting blocks is installed on the outer wall of described support tube, described upper limit position switch and described lower limit
Bit switch is respectively arranged in the upper and lower of described limit switch mounting blocks, the inner peace of described spacing push rod
Being loaded on described movable plate, the outer end of described spacing push rod passes position after the through hole on the barrel of described support tube
Between described upper limit position switch and described lower position switch and described upper limit position switch and described can be made respectively
Lower position switch output signal, the signal output part of described upper limit position switch and the signal of described lower position switch
Outfan is connected with the control input of described motor respectively.
Specifically, described upper limit position switch and described lower position switch are equipped with the connection and often of contacting with each other
State is that spring leaf and the contact of off-state, described spring leaf and described contact are connected conduct with holding wire respectively
Corresponding signal output part.
Preferably, described drain pan is the annular drain pan being centered around outside described bearing block through hole, described draining
The central axis of groove and the central axes of described bearing block through hole, described oil leak hole is three and uniformly divides
It is distributed on the cell wall circumference of described drain pan, equivalent cross-sectional area the entering more than described auxiliary fuel tank that 3 oil leak hole are total
1.8 times of hydraulic fluid port equivalent cross-sectional area, described drain pan flushes with described oil leak hole top.This structure can subtract
Little auxiliary fuel tank low-pressure end pressure variable gradient also improves its high-pressure side pressure variable gradient, makes auxiliary fuel tank simultaneously
Oil-out output pressure is minimum can be close to zero.
In order to make the smooth displacement of movable plate and will not rotate in movement, described fuel feeding hydraulic regulating device
Also including guide post and copper sliding sleeve, the position that described movable plate is positioned at around described screw is uniformly provided with multiple
Guide through hole, multiple described copper sliding sleeve correspondences respectively are installed in multiple described guide through hole, multiple described in lead
Being installed on the bottom of described top board to the upper end of bar and be positioned at described support tube, multiple described guide posts are respectively
Corresponding through multiple described copper sliding sleeves.
For the ease of installing leading screw, described fuel feeding hydraulic regulating device also includes round end flat key, thrust plate and deep
Ditch ball bearing, is connected by described round end flat key between the upper end of described leading screw with the rotating shaft of described motor,
The two ends of the described thrust plate of strip are installed on the barrel of described support tube, and the barrel of described follower sleeve sets
Having cross through hole, described thrust plate passes described cross through hole, and described deep groove ball bearing is installed on described thrust
The middle part of plate, the lower end of described leading screw is installed on described deep groove ball bearing and can rotate freely.
The beneficial effects of the present invention is:
The present invention uses step motor drive leading screw to rotate, and then drives shifting axle to move up and down, by movement
Axle, to the drain pan of setting in bearing block and blocking of oil leak hole, changes the size of its draining output, is formed other
Road throttling pressure regulation, thus reach the purpose of output pressure regulation；Motor can be controlled by conventional program
Automatically run, easy to use；Motor is away from machine oil, and it runs and is not result in that detecting medium machine oil produces
Temperature rise；The structure of annular drain pan and multiple oil leak hole can reduce auxiliary fuel tank low-pressure end pressure variable gradient also
Improve its high-pressure side pressure variable gradient, be that a kind of piston cooling nozzle that meets is tested pressure change needs
Optimizing general layout, can save the experiment test time, make that the oil-out output pressure of auxiliary fuel tank is minimum can be close simultaneously
0kPa；The minimum change gradient of output pressure is less than 1kPa.
Accompanying drawing explanation
Fig. 1 is the test curve schematic diagram of piston cooling nozzle performance test；
Fig. 2 is that the air pressure for piston cooling nozzle performance test stand that the applicant has applied for a patent adds
Carry the oil supply structure schematic diagram of fueller；
Fig. 3 is the fuel feeding hydraulic regulating device for piston cooling nozzle performance test stand of the present invention
Main regarding partial cutaway view；
Fig. 4 is the fuel feeding hydraulic regulating device for piston cooling nozzle performance test stand of the present invention
Left view partial cutaway view；
Fig. 5 is the front sectional view of bearing block of the present invention；
Fig. 6 is the top view of bearing block of the present invention；
Fig. 7 is the left view sectional view of oil blocking barrel of the present invention and oil return pipe；
Fig. 8 is the front sectional view of shifting axle of the present invention；
Fig. 9 is the left view sectional view of follower sleeve of the present invention；
Figure 10 is the front view of follower sleeve of the present invention；
Figure 11 is the left view sectional view of thrust plate of the present invention；
Figure 12 is the top view with Figure 11 as front view of thrust plate of the present invention；
Figure 13 is the top view of movable plate of the present invention；
Figure 14 is the top view of copper sliding sleeve of the present invention；
Figure 15 is the top view of the copper sliding sleeve being provided with spacing push rod in copper sliding sleeve of the present invention；
Figure 16 is the top view of spacing push rod of the present invention；
Figure 17 is the front sectional view of support tube of the present invention；
Figure 18 is the left view sectional view of support tube of the present invention；
Figure 19 is the main TV structure schematic diagram of upper limit position switch of the present invention and lower position switch；
Figure 20 is the left side after support tube of the present invention installs limit switch, lower position switch and spacing push rod
View；
Figure 21 is the piston cooling nozzle performance test stand after installing fuel feeding hydraulic regulating device of the present invention
Main TV structure schematic diagram；
Figure 22 is the piston cooling nozzle performance test stand after installing fuel feeding hydraulic regulating device of the present invention
Left view structural representation；
Figure 23 is the piston cooling nozzle performance test stand after installing fuel feeding hydraulic regulating device of the present invention
Oil supply structure schematic diagram.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings:
As shown in Fig. 3-Figure 20, the fuel feeding hydraulic pressure for piston cooling nozzle performance test stand of the present invention
Adjusting means, including motor 40, round end flat key 41, leading screw 42, thrust plate 64, deep groove ball bearing
63, guide post 44, top board 43, support tube 45, movable plate 56, copper sliding sleeve 46, follower sleeve 47, movement
Axle 48, oil blocking barrel 55, oil return pipe 66, linear bearing 49, bearing block 50 and auxiliary fuel tank 52, auxiliary fuel tank
The oil-in 54 on 52 tops is connected with the oil-out of fuel feeding oil sources (not shown), auxiliary fuel tank 52 bottom
The oil-in of oil-out 53 and piston cooling nozzle (see the piston cooling nozzle 114 of Figure 22, Figure 23)
Connecting, the base plate of bearing block 50 is installed on above auxiliary fuel tank 52, and the top of bearing block 50 is provided with bearing bore
Body 70, linear bearing 49 is installed in bearing cavity 70, the center of the base plate of bearing block 50 be provided with
The vertical bearing block through hole 73 that bearing cavity 70 communicates, is provided with in bearing block 50 and bearing block through hole 73 phase
Annular drain pan 71 that is logical and that be centered around outside bearing block through hole 73, the central axis of drain pan 71 and bearing
The central axes of block hole 73, with drain pan 71 and bearing block while that the cell wall of drain pan 71 being provided with
Three horizontal oil leak hole 72 that the outside of 50 communicates, three oil leak hole 72 are uniformly distributed in drain pan 71
On cell wall circumference, the total equivalent cross-sectional area of 3 oil leak hole 72 is more than the equivalence of the oil-in 54 of auxiliary fuel tank 52
1.8 times of sectional area, drain pan 71 flushes with oil leak hole 72 top；The bottom of shifting axle 48 is installed on directly
Bobbin holds in 49 and can move up and down and the lower end of shifting axle 48 can be at drain pan 71 and bearing block through hole
Moving up and down in 73, the upper end of shifting axle 48 is connected with the lower end of follower sleeve 47, the upper end of follower sleeve 47 with
Movable plate 56 connects, and the center of movable plate 56 is provided with vertical screw 85, and movable plate 56 is positioned at spiral shell
Position around hole 85 is uniformly provided with four guide through hole 84, and four copper sliding sleeve 46 correspondences respectively are installed on four
In individual guide through hole 84, the upper end of four guide posts 44 is installed on the bottom of top board 43 and is positioned at support tube 45
In, multiple guide posts 44 correspondence respectively passes through self outer spiral shell through multiple copper sliding sleeves 46, the bottom of leading screw 42
Stricture of vagina is connected with screw 85, and the rotating shaft of the upper end of leading screw 42 and motor 40 is by described round end flat key 41
Connecting, the two ends of the thrust plate 64 of strip are installed on the barrel of support tube 45, on the barrel of follower sleeve 47
Being provided with cross through hole 80, thrust plate 64 is through cross through hole 80, and deep groove ball bearing 63 is installed on thrust plate 64
Middle part, the lower end of leading screw 42 is installed on deep groove ball bearing 63 and can rotate freely；Shelves oil cylinder 55 is pacified
Being loaded on auxiliary fuel tank 52, support tube 45 is installed on shelves oil cylinder 55, and top board 43 is installed on support tube 45,
Motor 40 is installed on top board 43, and the rotating shaft of motor 40 passes the central through hole of top board 43,
Leading screw 42, movable plate 56, follower sleeve 47, shifting axle 48, linear bearing 49 and bearing block 50 are placed in
In the inner space that support tube 45 and oil blocking barrel 55 are constituted, the bottom of shelves oil cylinder 55 is provided with oil drain out, oil return
The oil-in of pipe 66 is connected with the oil drain out of shelves oil cylinder 55, the oil-out of oil return pipe 66 and described fuel feeding oil sources
Oil-in connect.
As shown in Fig. 3, Fig. 4 and Figure 16-Figure 20, in order to prevent movable plate 56 from moving during moving up and down
Dynamic distance causes the most greatly parts damages, fuel feeding hydraulic regulating device of the present invention also to include that limit switch is installed
Block 61, upper limit position switch 60, spacing push rod 57 and lower position switch 62, limit switch mounting blocks 61 is installed
In deep gouge 93 on the outer wall of support tube 45, upper limit position switch 60 and lower position switch 62 are respectively mounted
In the upper and lower of limit switch mounting blocks 61, the inner of spacing push rod 57 is installed on close copper sliding sleeve
On 46, copper sliding sleeve 46 is installed on movable plate 56, and the outer end of spacing push rod 57 is through the cylinder of support tube 45
After through hole 94 on wall between upper limit position switch 60 and lower position switch 62 and upper limit can be made respectively
Switch 60 and lower position switch 62 output signal, through hole 94 is positioned at deep gouge 93 region；Spacing open
Close 95 and be provided with can contact with each other connection and spring leaf 97 that normality is off-state and contact 96, spring leaf 97
Connect as corresponding signal output part with holding wire 98 respectively with contact 96, this signal output part and stepping
The control input of motor 40 connects, and limit switch 95 here refers to upper limit position switch 60 or lower limit
Switch 62.
Fig. 3 also show installation screw 51, Fig. 8 also show the big end flanges on shifting axle 48 top
75, the arc corners 77, Fig. 9 of the small end cylinder of the shifting axle connecting hole 76 of big end flanges edge, bottom
In also show the follower sleeve connecting hole 81 at the flange periphery of two ends up and down of follower sleeve 47, Figure 11 also illustrates that
In the middle part of thrust plate 64 for installing the installation deep gouge 83 of deep groove ball bearing 63 and being positioned at thrust plate 64
The thrust plate connecting hole 82 of edge, Figure 14 and Figure 15 also show on copper sliding sleeve 46 for guide post
The centre bore 86 that 44 pass, Figure 15 also show the limit on the copper sliding sleeve 46 for installing spacing push rod 57
Position push rod installs deep gouge 87, and Figure 16 also show the inner installing hole 88 of spacing push rod 57, and Figure 17 is also
Show and be symmetrical arranged on the barrel of support tube 45 and turn through hole 91 and position for installing the peace of thrust plate 64
Support tube connecting hole 92 at the flange periphery of two ends up and down of support tube 45.
As shown in Fig. 3-Figure 20, the fuel feeding hydraulic pressure for piston cooling nozzle performance test stand of the present invention
The basic functional principle of adjusting means is: motor 40 drives leading screw 42 to rotate, and then drives movable plate
56, follower sleeve 47 moves up and down together with shifting axle 48, is arranged in bearing block 50 by shifting axle 48
Drain pan 71 and the blocking of oil leak hole 72, change the size of its draining output, form by-pass throttle pressure regulation,
Thus the oil pressure that goes out reaching to regulate the oil-out 53 of auxiliary fuel tank 52 i.e. regulates this fuel feeding hydraulic regulating device
The purpose of output pressure.
When shifting axle 48 goes upward to upper limit extreme position, the output pressure of this fuel feeding hydraulic regulating device is
Reaching close to 0kPa, as up in tried to continue to, output pressure the most no longer changes, and spacing push rod 57 contacts the upper limit
It is out of service that bit switch 60 makes its output signal control motor 40, can limit meaningless movement travel,
Saving the operation time, improve operational efficiency, protection associated components is not damaged by.
When shifting axle 48 comes downwards to lower limit extreme position, as descending in tried to continue to, spacing push rod 57 connects
Touching down limit switch 62 makes its output signal control motor 40 out of service, can protect associated components
It is not damaged by.
During detection application, it is also possible to according to the technical requirement of detected product, adjust upper and lower spacing position
Put, by upper limit position adjustment to the minimum output pressure position required, by lower limit position adjustment to requiring
High output pressure position, with the further saving operation time, improve operational efficiency.
In order to the fuel feeding hydraulic regulating device for piston cooling nozzle performance test stand of the present invention
Application illustrates so that understanding, below to the piston cooling nozzle being provided with this fuel feeding hydraulic regulating device
Structure and the fuel feeding principle thereof of performance test stand are specifically described:
As shown in figure 21 and figure, the piston cooling nozzle of this fuel feeding hydraulic regulating device 117 is installed
Energy experimental stand is mainly by air tank 1, air tank 2 112, delivery angle seat valve 1, fuel feeding
Angle pedestal valve 2 110, oil return angle pedestal valve 1, oil return angle pedestal valve 2 108, oil return fuel tank 107, pressure pass
Sensor 106, flow inlet angle seat valve 1, flow inlet angle seat valve 2 102, aerofluxus angle pedestal valve 1, aerofluxus angle
Seat valve 2 103, valve (group) 104, air pressure adjustment unit 105, flow transducer 115, fixture 116, basis
Fuel feeding hydraulic regulating device 117, target practice position measurement device 118 and pipeline etc. form.This experimental stand is by gas
Pressure loads the machine oil replaced in promotion air tank 1, air tank 2 112 and fills to this fuel feeding hydraulic regulation
Put 117, the operation of programme-control this fuel feeding hydraulic regulating device 117, it is achieved by 1. aerofluxus, 2. low speed blood pressure lowering,
3. low speed boosting, the 4. order of rapid pressure, 5. reduction of blood pressure in high-speed carry out segmentation pressure and regulate the cooling of backward piston
Nozzle 114 fuel feeding.
The oil channel structures of above-mentioned piston cooling nozzle performance test stand as shown in figure 23, mainly includes outer supply
Source 120, air pressure adjustment unit 121, supply air line 123, air inlet electromagnetic valve 1, flow inlet angle seat valve one
100, air inlet pipeline 1, exhaust solenoid valve 1, aerofluxus angle pedestal valve 1, gas exhaust piping 1,
Air inlet electromagnetic valve 2 134, flow inlet angle seat valve 2 102, air inlet pipeline 2 135, exhaust solenoid valve 2 137,
Aerofluxus angle pedestal valve 2 103, gas exhaust piping 2 138, for solenoid 1, delivery angle seat valve 1,
Oil feed line 1, for solenoid 2 136, delivery angle seat valve 2 110, oil feed line 2 133, return
Solenoid 1, oil return angle pedestal valve 1, return line 1, oil return solenoid valve 2 132, return
Oil angle pedestal valve 2 108, return line 2 131, exhaust silencer 122, air tank 1, inflation oil
Case 2 112, this fuel feeding hydraulic regulating device 117, flow transducer 115, pressure transducer 106, oil return oil
Case 107.
Above-mentioned oil circuit is provided the source of the gas of 6.5bar by outer air supply source 120, air pressure adjustment unit 121 be adjusted to
The supply gas pressure set, by supply air line 123, air inlet pipeline 1, air inlet pipeline 2 135 to inflation
Fuel tank 1, air tank 2 112 supply.
Supply air line 123, air inlet electromagnetic valve 1, flow inlet angle seat valve 1, air inlet pipeline 1 structure
Become the intake channel to air tank 1 supply.The switching of this intake channel is by programme-control air inlet electricity
Magnet valve 1, and then drive the mode of flow inlet angle seat valve 1 to realize, by air inlet pipeline 1 to filling
Gas and oil case 1 is implemented air inlet and is loaded.
Supply air line 123, air inlet electromagnetic valve 2 134, flow inlet angle seat valve 2 102, air inlet pipeline 2 135 structure
Become the intake channel to air tank 2 112 supply.The switching of this intake channel is by programme-control air inlet electricity
Magnet valve 2 134, and then drive the mode of flow inlet angle seat valve 2 102 to realize, by air inlet pipeline 2 135 to filling
Gas and oil case 2 112 is implemented air inlet and is loaded.
Exhaust solenoid valve 1, aerofluxus angle pedestal valve 1, gas exhaust piping 1 are constituted from air tank one
The exhaust channel of 113 aerofluxuss.The switching of this exhaust channel by programme-control exhaust solenoid valve 1, and then
The mode driving aerofluxus angle pedestal valve 1 realizes, real by one 129 pairs of air tanks 1 of gas exhaust piping
Execute aerofluxus unloading.
Exhaust solenoid valve 2 137, aerofluxus angle pedestal valve 2 103, gas exhaust piping 2 138 are constituted from air tank two
The exhaust channel of 112 aerofluxuss.The switching of this exhaust channel by programme-control exhaust solenoid valve 2 137, and then
The mode driving aerofluxus angle pedestal valve 2 103 realizes, real by 2 138 pairs of air tanks 2 112 of gas exhaust piping
Execute aerofluxus unloading.
Constitute from air tank one for solenoid 1, delivery angle seat valve 1, oil feed line 1
113 to the first fuel feeding path of this fuel feeding hydraulic regulating device 117 fuel feeding.The switching of this fuel feeding path is by journey
Sequence controls for solenoid 1, and then drives the mode of delivery angle seat valve 1 to realize, in air pressure-loading
Effect under supplied to this fuel feeding hydraulic regulating device 117 by oil feed line 1 from air tank 1
Oil.
Constitute from air tank two for solenoid 2 136, delivery angle seat valve 2 110, oil feed line 2 133
112 to the second fuel feeding path of this fuel feeding hydraulic regulating device 117 fuel feeding.The switching of this fuel feeding path is by journey
Sequence controls for solenoid 2 136, and then drives the mode of delivery angle seat valve 2 110 to realize, in air pressure-loading
Effect under supplied to this fuel feeding hydraulic regulating device 117 by oil feed line 2 133 from air tank 2 112
Oil.
Oil return solenoid valve 1, oil return angle pedestal valve 1, return line 1 are constituted from oil return fuel tank 107
The way to cycle oil of machine oil is returned to air tank 1.The switching of this way to cycle oil is by programme-control oil return
Electromagnetic valve 1, and then drive the mode of oil return angle pedestal valve 1 to realize, pass through back under gravity
Oil pipe line 1 returns machine oil from oil return fuel tank 107 to air tank 1 gravity flow.
Oil return solenoid valve 2 132, oil return angle pedestal valve 2 108, return line 2 131 are constituted from oil return fuel tank 107
The way to cycle oil of machine oil is returned to air tank 2 112.The switching of this way to cycle oil is by programme-control oil return
Electromagnetic valve 2 132, and then drive the mode of oil return angle pedestal valve 2 108 to realize, pass through back under gravity
Oil pipe line 2 131 returns machine oil from oil return fuel tank 107 to air tank 2 112 gravity flow.
The operation of programme-control this fuel feeding hydraulic regulating device 117, it is thus achieved that to piston cooling nozzle 114 to be tried
The loading of charge oil pressure, unload and load, rate of debarkation.
With detection medium machine oil, load air directly contact flow inlet angle seat valve 1, aerofluxus angle pedestal valve one
101, flow inlet angle seat valve 2 102, aerofluxus angle pedestal valve 2 103, delivery angle seat valve 1, delivery angle seat valve two
110, oil return angle pedestal valve 1, oil return angle pedestal valve 2 108 are respectively by air inlet electromagnetic valve 1, aerofluxus electricity
Magnet valve 1, air inlet electromagnetic valve 2 134, exhaust solenoid valve 2 137, confession solenoid 1, fuel feeding
Electromagnetic valve 2 136, oil return solenoid valve 1, oil return solenoid valve 2 132 drive indirectly, are not result in machine oil
Produce temperature rise.
Frame for movement and the oil channel structures thereof of above piston cooling nozzle performance test stand are and this confession fluid
Pressure supporting other device of adjusting means 117, is not the object protected of the present invention, and at this, explanation is in order to just
In the application principle being further appreciated by this fuel feeding hydraulic regulating device 117.
Above-described embodiment is presently preferred embodiments of the present invention, is not the restriction to technical solution of the present invention,
As long as the technical scheme that can realize on the basis of above-described embodiment without creative work, all should regard
In the range of falling into the rights protection of patent of the present invention.
Claims (7)
1., for a fuel feeding hydraulic regulating device for piston cooling nozzle performance test stand, its feature exists
In: include motor, leading screw, top board, support tube, movable plate, follower sleeve, shifting axle, oil blocking barrel,
Oil return pipe, linear bearing, bearing block and auxiliary fuel tank, the oil-in on described auxiliary fuel tank top and fuel feeding oil sources
Oil-out connects, and the described oil-out of auxiliary fuel tank bottom is connected with the oil-in of piston cooling nozzle, described axle
The base plate of bearing is installed on above described auxiliary fuel tank, and the top of described bearing block is provided with bearing cavity, described
Linear bearing is installed in described bearing bore body, and the center of the base plate of described bearing block is provided with and described axle
Hold the vertical bearing block through hole that cavity communicates, be provided with in described bearing block and communicate with described bearing block through hole
Drain pan, the cell wall of described drain pan be provided with simultaneously with communicate outside described drain pan and described bearing block
Horizontal oil leak hole, the bottom of described shifting axle is installed in described linear bearing and can move up and down and institute
The lower end stating shifting axle can move up and down in described drain pan, and the upper end of described shifting axle is servo-actuated with described
The lower end of cylinder connects, and the upper end of described follower sleeve is connected with described movable plate, the center of described movable plate
Being provided with vertical screw, the bottom of described leading screw is connected with described screw by self external screw thread, described leading screw
Upper end be connected with the rotating shaft of described motor, described shelves oil cylinder is installed on described auxiliary fuel tank, described
Support cylinder is installed on described shelves oil cylinder, and described mounting of roof plate is on described support tube, and described motor is installed
On described top board, the rotating shaft of described motor is through the central through hole of described top board, described leading screw, institute
State movable plate, described follower sleeve, described shifting axle, described linear bearing and described bearing block and be placed in described
In the inner space that support tube and described oil blocking barrel are constituted, the bottom of described shelves oil cylinder is provided with oil drain out, described
The oil-in of oil return pipe is connected with the oil drain out of described shelves oil cylinder, the oil-out of described oil return pipe and described fuel feeding
The oil-in of oil sources connects.
Fuel feeding hydraulic pressure for piston cooling nozzle performance test stand the most according to claim 1 is adjusted
Regulating device, it is characterised in that: described fuel feeding hydraulic regulating device also includes limit switch mounting blocks, upper limit
Switch, spacing push rod and lower position switch, described limit switch mounting blocks is installed on the outer wall of described support tube
On, described upper limit position switch and described lower position switch are respectively arranged in the top of described limit switch mounting blocks
And bottom, the inner of described spacing push rod is installed on described movable plate, and the outer end of described spacing push rod passes
After through hole on the barrel of described support tube between described upper limit position switch and described lower position switch and energy
Enough make described upper limit position switch and described lower position switch output signal, the signal of described upper limit position switch respectively
The signal output part of outfan and described lower position switch is respectively with the control input of described motor even
Connect.
Fuel feeding hydraulic pressure for piston cooling nozzle performance test stand the most according to claim 2 is adjusted
Regulating device, it is characterised in that: it is equipped with and can contact with each other on described upper limit position switch and described lower position switch
Connect and spring leaf that normality is off-state and contact, described spring leaf and described contact respectively with holding wire
Connect as corresponding signal output part.
Fuel feeding hydraulic pressure for piston cooling nozzle performance test stand the most according to claim 1 is adjusted
Regulating device, it is characterised in that: described drain pan is the annular drain pan being centered around outside described bearing block through hole,
The central axis of described drain pan and the central axes of described bearing block through hole, described oil leak hole is three
And be uniformly distributed on the cell wall circumference of described drain pan, the total equivalent cross-sectional area of 3 oil leak hole is more than described pair
1.8 times of the oil-in equivalent cross-sectional area of fuel tank, described drain pan flushes with described oil leak hole top.
5. according in any of the one of claim 1-4 for piston cooling nozzle performance test stand
Fuel feeding hydraulic regulating device, it is characterised in that: described fuel feeding hydraulic regulating device also includes guide post and copper
Sliding sleeve, the position that described movable plate is positioned at around described screw is uniformly provided with multiple guide through hole, Duo Gesuo
Stating copper sliding sleeve correspondence respectively to be installed in multiple described guide through hole, the upper end of multiple described guide posts is installed on
The bottom of described top board is also positioned at described support tube, and multiple described guide posts correspondence respectively is through multiple described
Copper sliding sleeve.
Fuel feeding hydraulic pressure for piston cooling nozzle performance test stand the most according to claim 5 is adjusted
Regulating device, it is characterised in that: described fuel feeding hydraulic regulating device also includes round end flat key, thrust plate and zanjon
Ball bearing, is connected by described round end flat key between the upper end of described leading screw with the rotating shaft of described motor,
The two ends of the described thrust plate of strip are installed on the barrel of described support tube, and the barrel of described follower sleeve sets
Having cross through hole, described thrust plate passes described cross through hole, and described deep groove ball bearing is installed on described thrust
The middle part of plate, the lower end of described leading screw is installed on described deep groove ball bearing and can rotate freely.
7. according in any of the one of claim 1-4 for piston cooling nozzle performance test stand
Fuel feeding hydraulic regulating device, it is characterised in that: described fuel feeding hydraulic regulating device also include round end flat key,
Thrust plate and deep groove ball bearing, by described circle between upper end and the rotating shaft of described motor of described leading screw
Head flat key connects, and the two ends of the described thrust plate of strip are installed on the barrel of described support tube, described servo-actuated
The barrel of cylinder is provided with cross through hole, and described thrust plate passes described cross through hole, and described deep groove ball bearing is pacified
Being loaded on the middle part of described thrust plate, the lower end of described leading screw is installed on described deep groove ball bearing and can be free
Rotate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610349404.0A CN105840585B (en) | 2016-05-24 | 2016-05-24 | Fuel feeding hydraulic regulating device for piston cooling nozzle performance test stand |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610349404.0A CN105840585B (en) | 2016-05-24 | 2016-05-24 | Fuel feeding hydraulic regulating device for piston cooling nozzle performance test stand |
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| CN105840585B CN105840585B (en) | 2017-10-31 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110081044A (en) * | 2019-04-15 | 2019-08-02 | 宣化钢铁集团有限责任公司 | A kind of hydraulic leak detector valve and online leak hunting method |
| CN111322344A (en) * | 2020-04-26 | 2020-06-23 | 中国工程物理研究院总体工程研究所 | Gradual change throttle formula buffer suitable for direction drop test |
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| CN1361374A (en) * | 2000-12-29 | 2002-07-31 | 郭宝权 | Hydraulically driven high-pressure dry oil-lubricated pump |
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| Publication number | Publication date |
|---|---|
| CN105840585B (en) | 2017-10-31 |
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