CN105840585B - Fuel feeding hydraulic regulating device for piston cooling nozzle performance test stand - Google Patents
Fuel feeding hydraulic regulating device for piston cooling nozzle performance test stand Download PDFInfo
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- CN105840585B CN105840585B CN201610349404.0A CN201610349404A CN105840585B CN 105840585 B CN105840585 B CN 105840585B CN 201610349404 A CN201610349404 A CN 201610349404A CN 105840585 B CN105840585 B CN 105840585B
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- oil
- fuel feeding
- regulating device
- bearing block
- hole
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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
Abstract
The invention discloses a kind of fuel feeding hydraulic regulating device for piston cooling nozzle performance test stand, including stepper motor, leading screw, top plate, support tube, movable plate, follower sleeve, shifting axle, oil blocking barrel, oil return pipe, linear bearing, bearing block and auxiliary fuel tank, auxiliary fuel tank is connected with fuel feeding oil sources and piston cooling nozzle respectively, bearing block is installed on auxiliary fuel tank and provided with drain pan and oil leak hole, shifting axle can move up and down the dredge oil amount changed in drain pan, shifting axle is driven by follower sleeve and movable plate successively, movable plate is driven by the rotating shaft connection of leading screw and stepper motor.The present invention is using the rotation of driving stepper motor leading screw, and then drive shifting axle to move up and down, pass through shifting axle blocking to the drain pan that is set in bearing block and oil leak hole, change the size of its draining output, form by-pass throttle pressure regulation, so as to reach the purpose of output pressure regulation, it, which runs, will not cause detection medium machine oil to produce temperature rise, and easy to use.
Description
Technical field
Cooled down the present invention relates to a kind of annex of piston cooling nozzle performance test stand, more particularly to a kind of piston that is used for
The fuel feeding hydraulic regulating device of nozzle performance experimental stand.
Background technology
Piston cooling nozzle (i.e. PCN) is as the important component of automobile engine, and the quality of its performance is to engine
The lubrication of moving piston, cooling effect have extremely important effect；The test curve of piston cooling nozzle performance test such as Fig. 1
It is shown.
Piston cooling nozzle is made up of nozzle body and check valve, based on automobile engine specification, the diversity of model, piston
Specification, the model of cooling nozzles are also a lot, but its structure type is substantially similar.
The switching characteristic of piston cooling nozzle, discharge characteristic test are exfactory inspection projects, it is desirable to all products that dispatch from the factory
Carry out 100% one hundred percent inspection test.
Needing the technical indicator parameter of detection includes：Opening pressure, closing presure, leakage flow, draining flow and target practice
Position.
The specification of piston cooling nozzle, model are different, the technical requirement of its parameter difference.Its each parameter detecting
Condition, index request and variable-definition are as shown in table 1：
Each parameter detecting condition of table 1, 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 indicator parameter is defined as follows：
Opening pressure：Flow rises to charge oil pressure value P during regulation flow value Q2 from low to high.P∈[P2± Δ P] be
Opening pressure test passes, otherwise to be unqualified.
Closing presure：Flow drops to regulation flow value Q on earth by height2When charge oil pressure value P.P ＞ P1For closing presure
Test passes, otherwise to be unqualified.
Leakage flow：Nominative testing pressure value P0When flow value Q.Q ＜ Q3For leakage flow test passes, otherwise for not
It is qualified.
Draining flow：Flow rises to authorized pressure value P from low to high3When flow value Q.Q∈[Q5, Q14] it is draining stream
Test passes are measured, otherwise to be unqualified.
Target practice position：Pressure reaches draining flow rate test pressure value P3When oily beam spray into the inside and outside flow-rate ratio of designated area
Example.The test of target practice position is tested with target practice position measurement device, the target practice power F that oily beam injection is practiced shooting is obtained, by target practice
The threshold value setting of power judges whether it is qualified.F≥FmIt is qualified for target practice position measurement, otherwise to be unqualified.
When carrying out piston cooling nozzle performance test, by 1. exhaust, 2. low speed decompression, 3. low speed boosting, 4. quick rise
The order of pressure, 5. reduction of blood pressure in high-speed carries out segmentation pressure regulation fuel feeding, real-time testing charge oil pressure, flow and is beaten in whole process
Target power, obtains test curve as shown in Figure 1.The testing result corresponding to each parameter detecting condition is extracted from curve, and is pressed
Its technical requirement judges whether it is qualified.
When carrying out piston cooling nozzle performance test, adjustable pressure fueller is necessary.Meanwhile, in order to reduce piston
The equipment operating cost of cooling nozzles performance test stand, it is desirable to normal temperature automobile engine oil be detection medium, that is, require that piston is cold
But the running of nozzle performance experimental stand will not cause machine oil to produce temperature rise.
Traditional adjustable pressure fueller can be summarized as following 4 kinds of structures：Oil circuit is tested using meter in pressure regulation；Adopt
Oil circuit is tested with by-pass throttle pressure regulation；Oil circuit is tested using meter in pressure regulation；Charge oil pressure is realized using variable-frequency motor driving
Regulation.
Above-mentioned Conventional tunable forced feed device all has the disadvantage that：Due to the hair of motor, oil pump, magnetic valve etc.
Heat, detection medium machine oil can produce larger temperature rise.
In order to solve the above problems, present applicant has proposed a kind of machine oil is without temperature rise and the low piston that is used for of noise cools down spray
The air pressure-loading fueller of mouth performance test stand has simultaneously applied for patent, and the apparatus structure is as shown in Fig. 2 including inflation
Fuel 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, the air intake valve enters including the first air inlet electromagnetic valve 22, the first air inlet angle pedestal valve 18, the second air inlet electromagnetic valve 20, second
Air horn seat valve 21, the drain tap includes first exhaust magnetic valve 31, first exhaust angle pedestal valve 17, second exhaust magnetic valve
33rd, second exhaust angle pedestal valve 19, the oil-supply valve includes fuel feeding magnetic valve 34 and fuel feeding angle pedestal valve 23, the oil return valve bag
Include the space above the machine oil in oil return solenoid valve 32 and oil return angle pedestal valve 12, air tank 13 and account for whole in air tank 13
The a quarter in space is to 1/3rd, and general volume is 10 liters, the middle and lower part of air tank 13 and entering for piston cooling nozzle 5
Fuel feeding angle pedestal valve 23, flow sensor 3 and pressure sensor 4 are installed, oil return fuel tank 11 is pacified on the fuel feed pump 28 between hydraulic fluid port
The lower section of jet loaded on piston cooling nozzle 5 and the top for being located at air tank 13, oil return angle pedestal valve 12 are installed on oil return
On oil return pipe 29 between fuel tank 11 and air tank 13, the upper position of air tank 13 is on the machine oil in air tank 13
The first air inlet angle pedestal valve 18 being connected in parallel is installed on tracheae 30 between the position of side and the gas outlet of barostat 16
With the second air inlet angle pedestal valve 21, on the tracheae between the first air inlet angle pedestal valve 18 and the second air inlet angle pedestal valve 21 and air tank 13
Interlink and be connected to two blast pipes (unmarked in figure), first exhaust angle pedestal valve 17 and second exhaust angle pedestal valve 19 are respectively arranged in
On two blast pipes, the air inlet of barostat 16 is connected with high-pressure air source 15, the signal output part and pressure of flow sensor 3
Signal input part of the signal output part of force snesor 4 respectively with controller (not shown) is connected, the first air inlet electromagnetic valve 22
Control signal, the control signal of the second air inlet electromagnetic valve 20, the control signal of first exhaust magnetic valve 31, second row
The control signal difference of the control signal of pneumoelectric magnet valve 33, the control signal of fuel feeding magnetic valve 34 and oil return solenoid valve 32
It is connected with the control output end of controller, the air inlet of the first air inlet electromagnetic valve 22, the air inlet of the second air inlet electromagnetic valve 20,
Air inlet, the air inlet of second exhaust magnetic valve 33, the air inlet of fuel feeding magnetic valve 34 and the oil return electricity of one exhaust solenoid valve 31
Gas outlet of the air inlet of magnet valve 32 respectively with barostat 16 is connected, and 22 gas outlets of the first air inlet electromagnetic valve are entered with first
The control end connection of air horn seat valve 18, the gas outlet of the second air inlet electromagnetic valve 20 and the control end of the second air inlet angle pedestal valve 21 connect
Connect, the gas outlet of first exhaust magnetic valve 31 is connected with the control end of first exhaust angle pedestal valve 17, second exhaust magnetic valve 33
Gas outlet is connected with the control end of second exhaust angle pedestal valve 19, the gas outlet of fuel feeding magnetic valve 34 and the control of fuel feeding angle pedestal valve 23
End connection, the gas outlet of oil return solenoid valve 32 is connected with the control end of oil return angle pedestal valve 12, and the first air inlet angle pedestal valve 18, second enter
On blast pipe on tracheae where air horn seat valve 21 and where first exhaust angle pedestal valve 17, second exhaust angle pedestal valve 19 respectively
It is connected in series with choke valve 8, the steam vent of the first air inlet electromagnetic valve 22, the steam vent of the second air inlet electromagnetic valve 20, first exhaust
The steam vent of magnetic valve 31, the steam vent of second exhaust magnetic valve 33, the steam vent of fuel feeding magnetic valve 34, oil return solenoid valve 32
The exhaust outlet of steam vent, the exhaust outlet of first exhaust angle pedestal valve 17 and second exhaust angle pedestal valve 19 is separately installed with for the row of elimination
The muffler 14 of gas sound.
Though the above-mentioned air pressure-loading fueller for piston cooling nozzle performance test stand will not cause machine oil to produce
Temperature rise and the regulation for realizing charge oil pressure, but because it is controlled using the compressibility of air and air inlet, the flow velocity being vented
The loading of charge oil pressure, rate of debarkation are exported, for the piston cooling nozzle of different model, loading required for experiment test,
Rate of debarkation requires different, it is therefore desirable to the flow velocity debugging of corresponding air inlet, exhaust is carried out, due to needing the piston of experiment test
Cooling nozzles product type is more, it is necessary to often change the product type of piston cooling nozzle, be so accomplished by often carrying out air inlet,
The flow velocity debugging of exhaust, during its operating cost, makes troubles to user.
The content of the invention
The purpose of the present invention is that one kind is provided to solve the above problems will not cause detection medium machine oil to 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 stepper motor, leading screw,
Top plate, support tube, movable plate, follower sleeve, shifting axle, oil blocking barrel, oil return pipe, linear bearing, bearing block and auxiliary fuel tank, the pair
The oil inlet on fuel tank top is connected with the oil-out of fuel feeding oil sources, the oil-out of the auxiliary fuel tank bottom and piston cooling nozzle
Oil inlet is connected, and the bottom plate of the bearing block is installed on above the auxiliary fuel tank, and the top of the bearing block is provided with bearing bore
Body, the linear bearing is installed in the bearing bore body, and the center of the bottom plate of the bearing block is provided with and the bearing
It is described provided with the drain pan communicated with the bearing block hole in the vertical bearing block hole that cavity is communicated, the bearing block
The cell wall of drain pan provided with simultaneously with the horizontal oil leak hole that is communicated outside the drain pan and the bearing block, the movement
The bottom of axle is installed in the linear bearing and can moved up and down and the lower end of the shifting axle can be in the drain pan
In move up and down, the upper end of the shifting axle is connected with the lower end of the follower sleeve, the upper end of the follower sleeve and the movement
Plate is connected, and the center of the movable plate is provided with vertical screw, the bottom of the leading screw by itself external screw thread with it is described
Screw is connected, and the upper end of the leading screw is connected with the rotating shaft of the stepper motor, and the oil blocking barrel is installed on the auxiliary fuel tank,
The support tube is installed on the oil blocking barrel, and the mounting of roof plate is on the support tube, and the stepper motor is installed on institute
State on top plate, the rotating shaft of the stepper motor passes through the central through hole of the top plate, the leading screw, the movable plate, it is described with
It is interior that dynamic cylinder, the shifting axle, the linear bearing and the bearing block are placed in the support tube and the oil blocking barrel is constituted
In portion space, the bottom of the oil blocking barrel is provided with oil discharge outlet, and the oil discharge outlet of the oil inlet of the oil return pipe and the oil blocking barrel connects
Connect, the oil-out of the oil return pipe is connected with the oil inlet of the fuel feeding oil sources.
In said structure, auxiliary fuel tank is as the intermediate member between oil pump and piston cooling nozzle, while being also the present invention
The necessary parts of the fuel feeding hydraulic regulating device, it is secondary by changing in the case where the input pressure of auxiliary fuel tank keeps constant
The oil pump capacity of top of oil-tank changes the oil pressure of its underpart oil-out, realizes pressure regulation purpose；Stepper motor is used to drive leading screw to revolve
Turn；Leading screw is used for the vertical lines power that the rotary power of stepper motor is converted to movable plate, drives movable plate to move up and down；
Top plate is used for support tube top seal and is used as the installation foundation of the guide rod in stepper motor and following preferred structures；Support tube
For sealing other corresponding components and as the installation foundation of other corresponding components；Movable plate is used to coordinate stepping electricity with leading screw
The rotary power of machine is converted to straight line power, and drives follower sleeve and shifting axle to move up and down, while being used as following preferred structures
In spacing push rod installation foundation；Follower sleeve is used to be connected with movable plate and shifting axle to realize between movable plate and shifting axle
Steady transmission；Shifting axle be used for by follower sleeve drive move up and down and by movement of its lower end in the drain pan of bearing block come
Change the oil pump capacity in drain pan, so as to realize the purpose for changing the oil pump capacity at the top of auxiliary fuel tank；Oil blocking barrel is used for auxiliary fuel tank
The fuel-displaced oil-feed tank for blocking and oil pump being expelled to by oil return pipe at top；Linear bearing is used to realize above and below the freedom of shifting axle
It is mobile；Bearing block is used for the top for sealing auxiliary fuel tank and simultaneously as the design basis of oil outlet mechanism at the top of auxiliary fuel tank, and utilize
The bearing cavity on its top realizes the removable installation of shifting axle.
In order to prevent movable plate displacement during moving up and down from causing very much parts damages greatly, the fuel feeding hydraulic pressure is adjusted
Regulating device also includes limit switch mounting blocks, upper limit position switch, spacing push rod and lower position switch, the limit switch mounting blocks
On the outer wall for being installed on the support tube, the upper limit position switch and the lower position switch are respectively arranged in the limit switch
The upper and lower part of mounting blocks, the inner of the spacing push rod is installed on the movable plate, and the outer end of the spacing push rod is worn
Cross and be located at after the through hole on the barrel of the support tube between the upper limit position switch and the lower position switch and can distinguish
Make the upper limit position switch and the lower position switch output signal, the signal output part of the upper limit position switch and the lower limit
Control signal of the signal output part of bit switch respectively with the stepper motor is connected.
Specifically, the connection and normality is disconnected of contacting with each other is equipped with the upper limit position switch and the lower position switch
The spring leaf of open state and contact, the spring leaf and the contact are used as corresponding signal output with signal wire connection respectively
End.
Preferably, during the drain pan is the annular drain pan being centered around outside the bearing block hole, the drain pan
Heart axis is overlapped with the central axis of the bearing block hole, and the oil leak hole is three and is uniformly distributed in the drain pan
On cell wall circumference, the total equivalent cross-sectional area of 3 oil leak holes is more than 1.8 times of the oil inlet equivalent cross-sectional area of the auxiliary fuel tank, institute
Drain pan is stated with being flushed at the top of the oil leak hole.This structure can reduce auxiliary fuel tank low-pressure end pressure change gradient and improve it
High-pressure side pressure change gradient, while making the oil-out output pressure minimum accessible zero of auxiliary fuel tank.
In order that the smooth displacement of movable plate and will not rotate on the move, the fuel feeding hydraulic regulating device also includes
The position being located on guide rod and copper sliding sleeve, the movable plate around the screw is uniformly provided with multiple guide through hole, Duo Gesuo
State copper sliding sleeve respectively correspond to be installed in multiple guide through hole, the upper end of multiple guide rods is installed on the top plate
Bottom is simultaneously located in the support tube, and multiple guide rods are corresponded to through multiple copper sliding sleeves respectively.
For the ease of installing leading screw, the fuel feeding hydraulic regulating device also includes round end flat key, thrust plate and deep-groove ball axle
Hold, connected between the rotating shaft of the upper end of the leading screw and the stepper motor by the round end flat key, the thrust of strip
The two ends of plate are installed on the barrel of the support tube, and the barrel of the follower sleeve is provided with cross through hole, and the thrust plate is worn
Cross the cross through hole, the deep groove ball bearing is installed on the middle part of the thrust plate, the lower end of the leading screw is installed on described
On deep groove ball bearing and it can rotate freely.
The beneficial effects of the present invention are：
The present invention drives shifting axle to move up and down using the rotation of driving stepper motor leading screw, by shifting axle to axle
The drain pan of the interior setting of bearing and blocking for oil leak hole, change the size of its draining output, by-pass throttle pressure regulation are formed, so as to reach
The purpose adjusted to output pressure；Stepper motor can control automatic running by conventional program, easy to use；Stepper motor is remote
Disembark oil, it, which runs, will not cause detection medium machine oil to produce temperature rise；The structure of annular drain pan and multiple oil leak holes can subtract
Small auxiliary fuel tank low-pressure end pressure change gradient simultaneously improves its high-pressure side pressure change gradient, is that one kind meets piston cooling nozzle survey
The optimization general layout needed to pressure change is tried, the experiment test time can be saved, while making the oil-out output pressure of auxiliary fuel tank most
Low accessible 0kPa；The minimum change gradient of output pressure is less than 1kPa.
Brief description of the drawings
Fig. 1 is the test curve schematic diagram of piston cooling nozzle performance test；
Fig. 2 is the air pressure-loading fuel feeding for piston cooling nozzle performance test stand that the applicant has applied for a patent
The oil supply structure schematic diagram of device；
Fig. 3 is the main view office of the fuel feeding hydraulic regulating device of the present invention for piston cooling nozzle performance test stand
Cut open figure；
Fig. 4 is the left view office of the fuel feeding hydraulic regulating device of the present invention for piston cooling nozzle performance test stand
Cut open figure；
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 using 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 of installation limited location 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 structure diagram of upper limit position switch of the present invention and lower position switch；
Figure 20 is that support tube of the present invention installs the left view after upper limit position switch, lower position switch and spacing push rod；
Figure 21 is the master for installing the piston cooling nozzle performance test stand after fuel feeding hydraulic regulating device of the present invention
Depending on structural representation；
Figure 22 is the left side for installing the piston cooling nozzle performance test stand after fuel feeding hydraulic regulating device of the present invention
Depending on structural representation；
Figure 23 is the confession for installing the piston cooling nozzle performance test stand after fuel feeding hydraulic regulating device of the present invention
Oily structure principle chart.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings：
As shown in Fig. 3-Figure 20, the fuel feeding hydraulic regulation of the present invention for piston cooling nozzle performance test stand is filled
Put, including stepper motor 40, round end flat key 41, leading screw 42, thrust plate 64, deep groove ball bearing 63, guide rod 44, top plate 43, branch
Support cylinder 45, movable plate 56, copper sliding sleeve 46, follower sleeve 47, shifting axle 48, oil blocking barrel 55, oil return pipe 66, linear bearing 49, bearing
Seat 50 and auxiliary fuel tank 52, the oil inlet 54 on the top of auxiliary fuel tank 52 are connected with the oil-out of fuel feeding oil sources (not shown), secondary oil
The oil-out 53 of the bottom of case 52 is connected with the oil inlet of piston cooling nozzle (see Figure 22, Figure 23 piston cooling nozzle 114), axle
The bottom plate of bearing 50 is installed on above auxiliary fuel tank 52, and the top of bearing block 50 is provided with bearing cavity 70, and linear bearing 49 is installed
In in bearing cavity 70, the center of the bottom plate of bearing block 50 is provided with the vertical bearing block hole communicated with bearing cavity 70
73, bearing block 50 is interior provided with being communicated with bearing block hole 73 and being centered around the annular drain pan 71 outside bearing block hole 73, lets out
The central axis of oil groove 71 is overlapped with the central axis of bearing block hole 73, and the cell wall of drain pan 71 is provided with while and drain pan
71 and the oil leak hole 72 of three transverse directions that communicates of outside of bearing block 50, three oil leak holes 72 are uniformly distributed in the groove of drain pan 71
On wall circumference, the total equivalent cross-sectional area of 3 oil leak holes 72 is more than 1.8 times of the equivalent cross-sectional area of the oil inlet 54 of auxiliary fuel tank 52,
Drain pan 71 is flushed with the top of oil leak hole 72；The bottom of shifting axle 48 is installed in linear bearing 49 and can move up and down and move
The lower end of moving axis 48 can be moved up and down in drain pan 71 and bearing block hole 73, upper end and the follower sleeve 47 of shifting axle 48
Lower end is connected, and the upper end of follower sleeve 47 is connected with movable plate 56, and the center of movable plate 56 is provided with vertical screw 85, mobile
It is located at the position around screw 85 on plate 56 and is uniformly provided with four guide through hole 84, four copper sliding sleeves 46 corresponds to be installed on four respectively
In individual guide through hole 84, the upper end of four guide rods 44 is installed on the bottom of top plate 43 and in support tube 45, multiple to be oriented to
Bar 44 is corresponded to through multiple copper sliding sleeves 46 respectively, and the bottom of leading screw 42 is connected by itself external screw thread with screw 85, leading screw 42
Upper end is connected with the rotating shaft of stepper motor 40 by the round end flat key 41, and the two ends of the thrust plate 64 of strip are installed on support tube
On 45 barrel, the barrel of follower sleeve 47 is provided with cross through hole 80, and thrust plate 64 passes through cross through hole 80, deep groove ball bearing 63
The middle part of thrust plate 64 is installed on, the lower end of leading screw 42 is installed on deep groove ball bearing 63 and can rotated freely；Oil blocking barrel 55
It is installed on auxiliary fuel tank 52, support tube 45 is installed on oil blocking barrel 55, top plate 43 is installed on support tube 45, stepper motor 40 is pacified
Loaded on top plate 43, the rotating shaft of stepper motor 40 passes through the central through hole of top plate 43, leading screw 42, movable plate 56, follower sleeve 47, shifting
Moving axis 48, linear bearing 49 and bearing block 50 are placed in the inner space that support tube 45 and oil blocking barrel 55 are constituted, oil blocking barrel 55
Bottom be provided with oil discharge outlet, the oil inlet of oil return pipe 66 is connected with the oil discharge outlet of oil blocking barrel 55, the oil-out of oil return pipe 66 and institute
State the oil inlet connection of fuel feeding oil sources.
As shown in Fig. 3, Fig. 4 and Figure 16-Figure 20, in order to prevent the displacement during moving up and down of movable plate 56 too big
Cause parts damages, fuel feeding hydraulic regulating device of the present invention also includes limit switch mounting blocks 61, upper limit position switch 60, limit
Position push rod 57 and lower position switch 62, limit switch mounting blocks 61 are installed in the deep gouge 93 on the outer wall of support tube 45, the upper limit
Bit switch 60 and lower position switch 62 are respectively arranged in the upper and lower part of limit switch mounting blocks 61, the inner of spacing push rod 57
It is installed on close copper sliding sleeve 46, copper sliding sleeve 46 is installed on movable plate 56, the outer end of spacing push rod 57 passes through support tube 45
Barrel on through hole 94 after be located between upper limit position switch 60 and lower position switch 62 and can make upper limit position switch 60 respectively
With the output signal of lower position switch 62, through hole 94 is located in the region of deep gouge 93；Limit switch 95 is provided with can the company of contacting with each other
Connect and spring leaf 97 and contact 96 of the normality for off-state, spring leaf 97 and contact 96 are connected conduct pair with signal wire 98 respectively
The signal output part answered, the signal output part is connected with the control signal of stepper motor 40, what limit switch 95 here referred to
It is upper limit position switch 60 or lower position switch 62.
The big end flanges 75 that the top of shifting axle 48 is also show in mounting screw 51, Fig. 8, big hold-carrying are also show in Fig. 3
The upper of follower sleeve 47 is also show in the arc corners 77 of the shifting axle connecting hole 76 of blue edge, the small end cylinder of bottom, Fig. 9
Follower sleeve connecting hole 81 at the flange periphery of lower two ends, Figure 11 also show the middle part of thrust plate 64 be used for deep groove ball bearing is installed
63 installation deep gouge 83 and the thrust plate connecting hole 82 positioned at the edge of thrust plate 64, Figure 14 and Figure 15 also show copper cunning
It is used for the centre bore 86 that guide rod 44 is passed through on set 46, Figure 15 also show on the copper sliding sleeve 46 for installing spacing push rod 57
Spacing push rod installs deep gouge 87, and Figure 16 also show the inner mounting hole 88 of spacing push rod 57, and Figure 17 also show support tube
It is symmetrical arranged on 45 barrel and turns through hole 91 and the upper and lower ends method positioned at support tube 45 for the peace for installing thrust plate 64
The support tube connecting hole 92 of blue edge.
As shown in Fig. 3-Figure 20, the fuel feeding hydraulic regulation of the present invention for piston cooling nozzle performance test stand is filled
The basic functional principle put is：The driving leading screw 42 of stepper motor 40 rotates, and then drives movable plate 56, follower sleeve 47 and shifting axle
48 move up and down together, by shifting axle 48 to the drain pan 71 of the interior setting of bearing block 50 and blocking for oil leak hole 72, change it
The size of draining output, forms by-pass throttle pressure regulation, so as to reach that the oil pressure that goes out of the oil-out 53 of regulation auxiliary fuel tank 52 is adjusted
The purpose of the output pressure of abridged edition fuel feeding hydraulic regulating device.
When shifting axle 48 goes upward to upper limit extreme position, the output pressure of this fuel feeding hydraulic regulating device, which has reached, to be connect
Nearly 0kPa, such as tries to continue to up, and output pressure no longer changes, and the spacing contact of push rod 57 upper limit position switch 60 makes its output letter
Number control stepper motor 40 is out of service, can limit meaningless movement travel, saves run time, improves operational efficiency, protects
Shield associated components are not damaged by.
When shifting axle 48 comes downwards to lower limit extreme position, descending, the spacing contact of push rod 57 lower limit is such as tried to continue to
Switch 62 makes its output signal control stepper motor 40 out of service, associated components can be protected to be not damaged by.
Detection is when applying, and can also adjust upper and lower restraining position according to the technical requirement of detected product, will be upper
Restraining position is adjusted to desired minimum output pressure position, by lower limit position adjustment to desired highest output pressure position
Put, further to save run time, improve operational efficiency.
For the application to the fuel feeding hydraulic regulating device of the present invention for piston cooling nozzle performance test stand
Illustrate in order to understand, below to being provided with the piston cooling nozzle performance test stand of this fuel feeding hydraulic regulating device
Structure and its fuel feeding principle are specifically described：
As shown in figure 21 and figure, the piston cooling nozzle performance experiment table of this fuel feeding hydraulic regulating device 117 is installed
Frame is main by air tank 1, air tank 2 112, fuel feeding angle pedestal valve 1, fuel feeding angle pedestal valve 2 110, oil return angled seat
Valve 1, oil return angle pedestal valve 2 108, oil return fuel tank 107, pressure sensor 106, air inlet angle pedestal valve 1, air inlet angle pedestal valve
2 102, exhaust angle pedestal valve 1, exhaust angle pedestal valve 2 103, valve (group) 104, air pressure adjustment unit 105, flow sensor
115th, fixture 116, this fuel feeding hydraulic regulating device 117, target practice position measurement device 118 and pipeline etc. are constituted.The experimental stand
Air tank 1, the machine oil in air tank 2 112 are alternately promoted by air pressure-loading to this fuel feeding hydraulic regulating device 117,
The operation of this fuel feeding of programme-control hydraulic regulating device 117, realize by 1. exhaust, 2. low speed decompression, 3. low speed boosting, it is 4. quick
The order of boosting, 5. reduction of blood pressure in high-speed carries out segmentation pressure and adjusts the backward fuel feeding of piston cooling nozzle 114.
The oil channel structures of above-mentioned piston cooling nozzle performance test stand as shown in figure 23, mainly including outer air supply source 120,
Air pressure adjustment unit 121, supply air line 123, air inlet electromagnetic valve 1, air inlet angle pedestal valve 1, air inlet pipeline 1, row
Pneumoelectric magnet valve 1, exhaust angle pedestal valve 1, gas exhaust piping 1, air inlet electromagnetic valve 2 134, air inlet angle pedestal valve 2 102,
Air inlet pipeline 2 135, exhaust solenoid valve 2 137, exhaust angle pedestal valve 2 103, gas exhaust piping 2 138, fuel feeding magnetic valve 1,
Fuel feeding angle pedestal valve 1, oil feed line 1, fuel feeding magnetic valve 2 136, fuel feeding angle pedestal valve 2 110, oil feed line 2 133,
Oil return solenoid valve 1, oil return angle pedestal valve 1, return line 1, oil return solenoid valve 2 132, oil return angle pedestal valve two
108th, return line 2 131, exhaust silencer 122, air tank 1, air tank 2 112, this fuel feeding hydraulic regulation dress
Put 117, flow sensor 115, pressure sensor 106, oil return fuel tank 107.
Above-mentioned oil circuit is provided 6.5bar source of the gas by outer air supply source 120, and the confession of setting is adjusted to by air pressure adjustment unit 121
Atmospheric pressure, by supply air line 123, air inlet pipeline 1, air inlet pipeline 2 135 to air tank 1, air tank two
112 supply.
Supply air line 123, air inlet electromagnetic valve 1, air inlet angle pedestal valve 1, air inlet pipeline 1 are constituted to inflation oil
The intake channel that case 1 is supplied.The switching of the intake channel drives air inlet by programme-control air inlet electromagnetic valve 1
The mode of angle pedestal valve 1 is realized, air inlet loading is implemented by one 125 pairs of air tanks 1 of air inlet pipeline.
Supply air line 123, air inlet electromagnetic valve 2 134, air inlet angle pedestal valve 2 102, air inlet pipeline 2 135 are constituted to inflation oil
The intake channel that case 2 112 is supplied.The switching of the intake channel drives air inlet by programme-control air inlet electromagnetic valve 2 134
The mode of angle pedestal valve 2 102 is realized, air inlet loading is implemented by 2 135 pairs of air tanks 2 112 of air inlet pipeline.
Exhaust solenoid valve 1, exhaust angle pedestal valve 1, gas exhaust piping 1 are constituted and are vented from air tank 1
Exhaust channel.The switching of the exhaust channel drives exhaust angle pedestal valve 1 by programme-control exhaust solenoid valve 1
Mode realize, pass through one 129 pairs of air tanks 1 of gas exhaust piping and implement exhaust unloading.
Exhaust solenoid valve 2 137, exhaust angle pedestal valve 2 103, gas exhaust piping 2 138 are constituted and are vented from air tank 2 112
Exhaust channel.The switching of the exhaust channel drives exhaust angle pedestal valve 2 103 by programme-control exhaust solenoid valve 2 137
Mode realize, pass through 2 138 pairs of air tanks 2 112 of gas exhaust piping and implement exhaust unloading.
Fuel feeding magnetic valve 1, fuel feeding angle pedestal valve 1, oil feed line 1 are constituted from air tank 1 to originally
First fuel feeding path of the fuel feeding of fuel feeding hydraulic regulating device 117.The switching of the fuel feeding path is by programme-control fuel feeding magnetic valve one
127, and then drive the mode of fuel feeding angle pedestal valve 1 to realize, from air tank 1 by supplying in the presence of air pressure-loading
Oil pipe line 1 is to the fuel feeding of this fuel feeding hydraulic regulating device 117.
Fuel feeding magnetic valve 2 136, fuel feeding angle pedestal valve 2 110, oil feed line 2 133 are constituted from air tank 2 112 to originally
Second fuel feeding path of the fuel feeding of fuel feeding hydraulic regulating device 117.The switching of the fuel feeding path is by programme-control fuel feeding magnetic valve two
136, and then drive the mode of fuel feeding angle pedestal valve 2 110 to realize, from air tank 2 112 by supplying in the presence of air pressure-loading
Oil pipe line 2 133 is to the fuel feeding of this fuel feeding hydraulic regulating device 117.
Oil return solenoid valve 1, oil return angle pedestal valve 1, return line 1 are constituted from oil return fuel tank 107 to inflation
Fuel tank 1 returns to the way to cycle oil of machine oil.The switching of the way to cycle oil is driven by programme-control oil return solenoid valve 1
The mode of dynamic oil return angle pedestal valve 1 realizes, under gravity by return line 1 from oil return fuel tank 107 to filling
The gravity flow of gas and oil case 1 returns to machine oil.
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 to inflation
Fuel tank 2 112 returns to the way to cycle oil of machine oil.The switching of the way to cycle oil is driven by programme-control oil return solenoid valve 2 132
The mode of dynamic oil return angle pedestal valve 2 108 realizes, under gravity by return line 2 131 from oil return fuel tank 107 to filling
The gravity flow of gas and oil case 2 112 returns to machine oil.
The operation of this fuel feeding of programme-control hydraulic regulating device 117, is obtained to the charge oil pressure of piston cooling nozzle 114 to be tried
Loading, unloading and its loading, rate of debarkation.
With detection medium machine oil, loading air directly contact air inlet angle pedestal valve 1, exhaust angle pedestal valve 1, air inlet
Angle pedestal valve 2 102, exhaust angle pedestal valve 2 103, fuel feeding angle pedestal valve 1, fuel feeding angle pedestal valve 2 110, oil return angle pedestal valve 1,
Oil return angle pedestal valve 2 108 is respectively by air inlet electromagnetic valve 1, exhaust solenoid valve 1, air inlet electromagnetic valve 2 134, exhaust electromagnetism
Valve 2 137, fuel feeding magnetic valve 1, fuel feeding magnetic valve 2 136, oil return solenoid valve 1, oil return solenoid valve 2 132 drive indirectly
It is dynamic, machine oil will not be caused to produce temperature rise.
The mechanical structure and its oil channel structures of above piston cooling nozzle performance test stand are to be adjusted with this fuel feeding hydraulic pressure
The supporting other devices of regulating device 117, are not the objects protected of the present invention, and explanation is for the ease of further understanding this confession herein
The application principle of oily hydraulic regulating device 117.
Above-described embodiment is presently preferred embodiments of the present invention, is not the limitation to technical solution of the present invention, as long as
The technical scheme that can be realized without creative work on the basis of above-described embodiment, is regarded as falling into patent of the present invention
Rights protection scope in.
Claims (7)
1. a kind of fuel feeding hydraulic regulating device for piston cooling nozzle performance test stand, it is characterised in that：Including stepping
Motor, leading screw, top plate, support tube, movable plate, follower sleeve, shifting axle, oil blocking barrel, oil return pipe, linear bearing, bearing block and pair
Fuel tank, the oil inlet on the auxiliary fuel tank top is connected with the oil-out of fuel feeding oil sources, the oil-out of the auxiliary fuel tank bottom and work
Fill in the oil inlet connection of cooling nozzles, the bottom plate of the bearing block is installed on above the auxiliary fuel tank, the bearing block it is upper
Portion is provided with bearing cavity, and the linear bearing is installed in the bearing bore body, and the centre bit of the bottom plate of the bearing block is installed
Have and be provided with what is communicated with the bearing block hole in the vertical bearing block hole led to the bearing bore body phase, the bearing block
Drain pan, the cell wall of the drain pan is provided with horizontal draining simultaneously with being communicated outside the drain pan and the bearing block
Hole, the bottom of the shifting axle is installed in the linear bearing and can moved up and down and the lower end of the shifting axle can be
Moved up and down in the drain pan, the upper end of the shifting axle is connected with the lower end of the follower sleeve, the upper end of the follower sleeve
It is connected with the movable plate, the center of the movable plate is provided with vertical screw, and the bottom of the leading screw passes through outside itself
Screw thread is connected with the screw, and the upper end of the leading screw is connected with the rotating shaft of the stepper motor, and the oil blocking barrel is installed on institute
State on auxiliary fuel tank, the support tube is installed on the oil blocking barrel, the mounting of roof plate is on the support tube, and the stepping is electric
Machine is installed on the top plate, and the rotating shaft of the stepper motor passes through the central through hole of the top plate, the leading screw, the movement
Plate, the follower sleeve, the shifting axle, the linear bearing and the bearing block are placed in the support tube and the oil blocking barrel
In the inner space of composition, the bottom of the oil blocking barrel is provided with oil discharge outlet, the oil inlet of the oil return pipe and the oil blocking barrel
Oil discharge outlet is connected, and the oil-out of the oil return pipe is connected with the oil inlet of the fuel feeding oil sources.
2. the fuel feeding hydraulic regulating device according to claim 1 for piston cooling nozzle performance test stand, it is special
Levy and be：The fuel feeding hydraulic regulating device is also opened including limit switch mounting blocks, upper limit position switch, spacing push rod and lower limit
Close, the limit switch mounting blocks are installed on the outer wall of the support tube, the upper limit position switch and the lower position switch
The upper and lower part of the limit switch mounting blocks is respectively arranged in, the inner of the spacing push rod is installed on the movable plate
On, the outer end of the spacing push rod is through under being located at the upper limit position switch and be described after the through hole on the barrel of the support tube
It can make between limit switch and respectively the upper limit position switch and the lower position switch output signal, the upper limit position switch
Signal output part and control signal of the signal output part respectively with the stepper motor of the lower position switch be connected.
3. the fuel feeding hydraulic regulating device according to claim 2 for piston cooling nozzle performance test stand, it is special
Levy and be：Can contact with each other connection and normality are equipped with the upper limit position switch and the lower position switch for off-state
Spring leaf and contact, the spring leaf and the contact are used as corresponding signal output part with signal wire connection respectively.
4. the fuel feeding hydraulic regulating device according to claim 1 for piston cooling nozzle performance test stand, it is special
Levy and be：The drain pan is the annular drain pan being centered around outside the bearing block hole, the central axis of the drain pan with
The central axis of the bearing block hole is overlapped, and the oil leak hole is three and is uniformly distributed in the cell wall circumference of the drain pan
On, the total equivalent cross-sectional area of 3 oil leak holes is more than 1.8 times of the oil inlet equivalent cross-sectional area of the auxiliary fuel tank, the drain pan
With being flushed at the top of the oil leak hole.
5. the fuel feeding hydraulic pressure for piston cooling nozzle performance test stand according to any one of claim 1-4 is adjusted
Regulating device, it is characterised in that：The fuel feeding hydraulic regulating device also includes being located at institute on guide rod and copper sliding sleeve, the movable plate
State the position around screw and be uniformly provided with multiple guide through hole, multiple copper sliding sleeves are corresponded to respectively is installed on multiple guiding
In through hole, the upper ends of multiple guide rods is installed on the bottom of the top plate and in the support tube, multiple described to lead
Corresponded to respectively through multiple copper sliding sleeves to bar.
6. the fuel feeding hydraulic regulating device according to claim 5 for piston cooling nozzle performance test stand, it is special
Levy and be：The fuel feeding hydraulic regulating device also include round end flat key, thrust plate and deep groove ball bearing, the upper end of the leading screw with
Connected between the rotating shaft of the stepper motor by the round end flat key, the two ends of the thrust plate of strip are installed on the branch
On the barrel for supportting cylinder, the barrel of the follower sleeve is provided with cross through hole, and the thrust plate passes through the cross through hole, the depth
Ditch ball bearing is installed on the middle part of the thrust plate, and the lower end of the leading screw is installed on the deep groove ball bearing and can be free
Rotation.
7. the fuel feeding hydraulic pressure for piston cooling nozzle performance test stand according to any one of claim 1-4 is adjusted
Regulating device, it is characterised in that：The fuel feeding hydraulic regulating device also includes round end flat key, thrust plate and deep groove ball bearing, described
Connected between the rotating shaft of the upper end of leading screw and the stepper motor by the round end flat key, the two ends of the thrust plate of strip
On the barrel for being installed on the support tube, the barrel of the follower sleeve is provided with cross through hole, and the thrust plate passes through the horizontal stroke
To through hole, the deep groove ball bearing is installed on the middle part of the thrust plate, and the lower end of the leading screw is installed on the deep-groove ball axle
Hold and can rotate freely.
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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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| 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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| CN110081044B (en) * | 2019-04-15 | 2024-02-02 | 宣化钢铁集团有限责任公司 | Hydraulic leak detection valve and online leak detection 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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| CN1271364C (en) * | 2000-12-29 | 2006-08-23 | 郭宝权 | Hydraulically driven high-pressure dry oil-lubricated pump |
| KR100446819B1 (en) * | 2001-11-28 | 2004-09-01 | 유도실업주식회사 | Automefic oil pressure control method and device of oil pressule cylinder |
| CN101963120B (en) * | 2010-09-03 | 2011-11-16 | 北京航空航天大学 | Stabilized-pressure oil supply system of high-pressure direct-injection injector and control method thereof |
| CN103343757B (en) * | 2013-07-09 | 2015-12-02 | 中国工程物理研究院总体工程研究所 | Counterweight for pressure control valve performance test stand loads constant pressure oil supply device |
| CN205639173U (en) * | 2016-05-24 | 2016-10-12 | 中国工程物理研究院总体工程研究所 | A fuel feeding hydraulic pressure adjusting device for piston cooling nozzle performance experiment bench |
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