CN205247772U - Hydraulic pressure teaching comprehensive experiment platform - Google Patents
Hydraulic pressure teaching comprehensive experiment platform Download PDFInfo
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- CN205247772U CN205247772U CN201521137795.7U CN201521137795U CN205247772U CN 205247772 U CN205247772 U CN 205247772U CN 201521137795 U CN201521137795 U CN 201521137795U CN 205247772 U CN205247772 U CN 205247772U
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Abstract
The utility model provides a hydraulic pressure teaching comprehensive experiment platform. Main aim at provides the hydraulic pressure comprehensive experiment platform that can be used for hydraulic pressure and the experiment of pneumatic course to impart knowledge to students. Its characterized in that: the integration of hydraulic pressure laboratory bench has hydraulic power component, controlling element and execute component and auxiliary element, power components includes axial plunger pump, gear pump and impeller pump, controlling element includes pilot operated compound relief valve, direct action type overflow valve, electromagnetic relief valve, double - direction hydraulic - clock, check valve, choke valve, controls sequence valve, pressure relay and travel switch outward, auxiliary element includes filter, oil tank, manometer, joint and ball valve, can realize 8 kinds of typical hydraulic circuit, the return circuit of overflow valve pressure regulating promptly, throttle speed control return circuit, differential quick movment return circuit, sequence action return circuit, decompression control circuit, double pump fuel feeding quick movment return circuit, auto -lock pressure holding circuit, relief circuit through the corresponding tube coupling between the aforementioned component on the laboratory bench.
Description
Technical field
The utility model relates to a kind of Comprehensive experiment pedestal of fluid pressure that is applied to hydraulic pressure and pneumatic course experiment teaching.
Background technology
Hydraulic pressure and pneumatic course are the core curriculum of mechanical speciality, and hydraulic test teaching means is the essential condition that ensures this Teaching Effect. In hydraulic test teaching, cultivate the overall qualities of mechanical Major mechanical electronic hydraulic aspect, positive adaptation the target call of the reform in education, the therefore design of hydraulic teaching experiment table, improve the important content that becomes hydraulic curriculum faculty concern with development. If building of several single functional experiment platforms, experiment effect is unsatisfactory, so should consider emphatically in the process of hydraulic teaching experiment table development: (1) experimental bench will meet the needs of Pattern of Hydraulic Experiment Teaching and the original intention of theory teaching, meet the basic experiment requirement of teaching, and necessary experimental project in covering theory teaching; (2) performance of hydraulic power source device. Experiment itself requires the performance of hydraulic power source good, adapts to widely, is convenient to carry out the fixing of element and connects, and have good systemic openness; (3) experimental bench will have good intuitive, can clearly observe the total arrangement of hydraulic system, and the measuring instrument detecting for systematic parameter is installed, as pressure gauge etc.; (4) experimental bench design will take into full account the application in hydraulic system of microelectric technique and Advanced Control Techniques, and interface and the appointed condition of technology combination is provided.
Summary of the invention
In order to solve the technical problem of mentioning in background technology, the utility model provides a kind of hydraulic pressure teaching synthetic experimental bench, and this kind of hydraulic pressure teaching synthetic experimental bench comprises the hydraulic curriculum desired multiple Hydraulic Elements of teaching and hydraulic pressure fundamental circuit. Wherein, Hydraulic Elements have been contained hydraulic power original paper, hydraulic control component, hydraulic actuator and hydraulic pressure auxiliary element; Hydraulic pressure fundamental circuit comprises relief valve pressure regulating loop, throttling speed control circuit, differential rapid movement loop, sequentially-operating loop, Decompression Controlling loop, double pump fuel feeding rapid movement loop, self-locking pressure dwelling loop, relief circuit totally 8 kinds of typical hydraulic loops. Multiple hydraulic control component is carried out modular combination by this experimental bench, gasket mounted control valve piece is integrated in operating table surface as unit taking integrated package, and the compactness that can realize between Hydraulic Elements connects. The introducing of Electrical Control Technology simultaneously, start and stop, the oil sources that can realize hydraulic pump loads, the automatic control of the flexible and differential quick loop start-stop of hydraulic cylinder.
The technical solution of the utility model is: this kind of hydraulic pressure teaching synthetic experimental bench, comprise base support, operating desk and electric control box with experimental stand, its unique distinction is: on described operating desk, be fixed with the first integrated package, the second integrated package, the 3rd integrated package and the 4th integrated package, wherein, the control valve piece in each integrated package combines according to board-like connected mode;
The first integrated package is made up of 3-position 4-way torch integrated reversal valve, pilot operated compound relief valve, the first screw, the second screw, the first integrated package valve seat and plug; Pilot operated compound relief valve is connected with the first screwed hole on the first integrated package valve seat by the second screw, 3-position 4-way torch integrated reversal valve is connected with the second screwed hole on the first integrated package valve seat by the first screw, and the first integrated package valve seat is connected on experimental stand by the 3rd screwed hole; The first Pressure gauge oil pressure input hole, pilot operated compound relief valve inlet opening, 3-position 4-way torch integrated reversal valve P hole, the first integrated package fuel feed hole, sequence valve control port, check valve outlet inside are connected, the set pressure that its interior oil hydraulic coupling is pilot operated compound relief valve; First throttle valve inlet connecting hole, the first plug screwed hole, pilot operated compound relief valve fluid hole, 3-position 4-way torch integrated reversal valve T hole, the first integrated package spill port, the second plug screwed hole inside are connected, and are directly connected with return filter; 3-position 4-way torch integrated reversal valve A hole and A hole exits internal communication; 3-position 4-way torch integrated reversal valve B hole and B hole entrance internal communication;
The second integrated package is made up of first throttle valve, the second choke valve, the 3rd choke valve, two-bit triplet reversal valve, plug, the 3rd screw, the 4th screw, the 5th screw, the 6th screw and the second integrated package valve seat; First throttle valve is connected with the 5th screwed hole on the second integrated package valve seat by the 3rd screw; The second choke valve is connected with the 6th screwed hole on the second integrated package valve seat by the 4th screw; The 3rd choke valve is connected with the 7th screwed hole on the second integrated package valve seat by the 6th screw; Two-bit triplet solenoid directional control valve is connected with the 4th screwed hole on the second integrated package valve seat by the 5th screw; The second integrated package valve seat is connected on experimental stand by the 8th screwed hole; Two-bit triplet solenoid directional control valve A hole, the second throttling valve inlet, first throttle valve outlet port, the first hydraulic cylinder rodless cavity connecting hole inside are connected, and are directly connected to the rodless cavity of the first hydraulic cylinder; The 3rd choke valve entrance, two-bit triplet solenoid directional control valve B hole, the 4th plug screwed hole inside are connected; The first hydraulic cylinder rod chamber connecting hole, two-bit triplet solenoid directional control valve P hole internal communication, be connected to the rod chamber of the first hydraulic cylinder; The 3rd choke valve outlet, the 3rd choke valve outlet connecting hole internal communication, be connected on the B hole entrance of the first integrated package valve seat;
The 3rd integrated package is made up of direct-acting overflow valve, sequence valve, 3-position 4-way solenoid directional control valve, one way pressure-reducing valve, the 3rd integrated package valve seat, the 7th screw, the 8th screw and the 9th screw; Direct-acting overflow valve is connected with the 11 screwed hole on the 3rd integrated package valve seat by the 7th screw; Sequence valve is connected with the tenth screwed hole on the 3rd integrated package valve seat by the 8th screw; 3-position 4-way solenoid directional control valve is connected with the 9th screwed hole on the 3rd integrated package valve seat by the 9th screw with one way pressure-reducing valve; The 3rd integrated package valve seat is connected on experimental stand by the 12 screwed hole; The 5th plug screwed hole, the 7th plug screwed hole, 3-position 4-way solenoid directional control valve P hole, sequence valve inlet opening, direct-acting overflow valve fuel feed hole, the second Pressure gauge oil pressure input hole, check valve entrance, the 3rd integrated package fuel feed hole inside are connected, the set pressure that its interior oil hydraulic coupling is direct-acting overflow valve; The 6th plug screwed hole, 3-position 4-way solenoid directional control valve T hole, sequence valve spill port, direct-acting overflow valve spill port, the 8th plug screwed hole are connected with the 3rd integrated package spill port inside, are connected on return filter; 3-position 4-way solenoid directional control valve B hole is connected with the second hydraulic cylinder rod chamber connecting hole; The 3rd Pressure gauge oil pressure input hole, 3-position 4-way solenoid directional control valve A hole are connected with the second hydraulic cylinder rodless cavity connecting hole;
The 4th integrated package is made up of electromagnetic relief valve, 3-position 4-way hand-operated direction valve, bidirectional hydraulic lock, the tenth screw, the 11 screw and the 4th integrated package valve seat; Electromagnetic relief valve is connected with the 13 screwed hole on the 4th integrated package valve seat by the 11 screw with bidirectional hydraulic lock; Electromagnetic relief valve is connected with the 14 screwed hole on the 4th integrated package valve seat by the tenth screw; The 4th integrated package valve seat is connected on experimental stand by the 15 screwed hole; 3-position 4-way hand-operated direction valve P mouth, electromagnetic relief valve inlet opening, the tenth plug screwed hole, the 4th Pressure gauge oil pressure input hole, the 4th integrated package fuel feed hole inside are connected, the set pressure that its interior oil hydraulic coupling is electromagnetic relief valve; 3-position 4-way hand-operated direction valve T mouth, electromagnetic relief valve fluid hole, the 4th integrated package spill port, the 11 plug screwed hole inside are connected, and are connected to fuel tank; 3-position 4-way hand-operated direction valve A mouth, the 3rd hydraulic cylinder rodless cavity connecting hole are connected; The 3rd hydraulic cylinder rod chamber connecting hole, 3-position 4-way hand-operated direction valve B mouth are connected.
The utlity model has following beneficial effect: this hydraulic pressure teaching synthetic experimental bench comprises the multiple Hydraulic Elements that hydraulic pressure curricula requires. Hydraulic power units, hydraulic pressure auxiliary element are arranged on base support; Hydraulic control component, hydraulic actuator are arranged on operating desk. The connected mode of profile, size and the pipeline of element is all high-visible, contributes to the understanding of student to each Hydraulic Elements essential characteristic, and hydraulic system composition is had to the understanding of globality. This experimental bench comprises 8 kinds of typical hydraulic fundamental circuits such as throttling speed control circuit, differential rapid movement loop, sequentially-operating loop, double pump fuel feeding rapid movement loop, self-locking pressure dwelling loop. Student can draw out the hydraulic schematic diagram of experimental bench according to definite element annexation, and backward inference ability that like this can exercise student ' is deepened the understanding to each Hydraulic Elements, can understand function and the use characteristic of each hydraulic circuit simultaneously in depth. In addition, quoting of Electrical Control Technology, has adapted to the development trend of current hydraulic test teaching. Selecting of Programmable Logic Controller, has improved the exploitation flexibility of control loop, and student can be by the programming for PLC, complete different control loop designs, being combined with of mechanical electronic hydraulic, is also conducive to improve student's overall qualities simultaneously, for later engineering application lays a good foundation. In sum, this hydraulic pressure teaching synthetic experimental bench compact conformation, designs ingeniously, and the Hydraulic Elements that comprise and fundamental circuit kind are more, and experiment content enriches, and the knowledge in hydraulic pressure theory teaching can be consolidated and expansion; Student can independently carry out loop programming simultaneously, has improved student's integration capability, also for good theory and practice basis is established in the engineering application of later mechanical electronic hydraulic.
Brief description of the drawings:
Fig. 1 is hydraulic schematic diagram of the present utility model
Fig. 2 is three-dimensional structure schematic diagram of the present utility model.
Fig. 3 is the first integrated package mounting structure schematic diagram described in the utility model.
Fig. 4 is the first integrated package valve seat described in the utility model side figure that bows.
Fig. 5 is that the first integrated package valve seat described in the utility model is faced upward side figure.
Fig. 6 is the second integrated package mounting structure schematic diagram described in the utility model.
Fig. 7 is the second integrated package valve seat described in the utility model side figure that bows.
Fig. 8 is that the second integrated package valve seat described in the utility model is faced upward side figure.
Fig. 9 is the 3rd integrated package mounting structure schematic diagram described in the utility model.
Figure 10 is the 3rd integrated package valve seat described in the utility model side figure that bows.
Figure 11 is that the 3rd integrated package valve seat described in the utility model is faced upward side figure.
Figure 12 is the 4th integrated package mounting structure schematic diagram described in the utility model.
Figure 13 is the 4th integrated package valve seat described in the utility model side figure that bows.
Figure 14 is that the 4th integrated package valve seat described in the utility model is faced upward side figure.
1-the first ball valve in figure, 2-gear pump, 3-pilot operated compound relief valve, 4-return filter, 5-the first Pressure gauge, 6-3-position 4-way torch integrated reversal valve, 7-first throttle valve, 8-the second choke valve, 9-the 3rd choke valve, 10-two-bit triplet solenoid directional control valve, 11-the first pressure switch, 12-the first travel switch, 13-the first hydraulic cylinder, 14-the second ball valve, 15-vane pump, 16-direct-acting overflow valve, 17-check valve, 18-the second Pressure gauge, 19-sequence valve, 20-3-position 4-way solenoid directional control valve, 21-one way pressure-reducing valve, 22-the 3rd Pressure gauge, 23-the second pressure switch, 24-the second travel switch, 25-the second hydraulic cylinder, 26-axial plunger pump, 27-inlet oil filter, 28-electromagnetic relief valve, 29-the 4th Pressure gauge, 30-3-position 4-way hand-operated direction valve, 31-bidirectional hydraulic lock, 32-the 5th Pressure gauge, 33-the 3rd hydraulic cylinder, 34-fuel tank, 35-the first integrated package, 36-the second integrated package, 37-the 3rd integrated package, 38-the 4th integrated package, 39-experimental stand, 40-electric control box, 41-the first screw, 42-the second screw, 43-the first integrated package valve seat, 44-plug, 45-first throttle valve inlet connecting hole, 46-the first plug screwed hole, 47-the first Pressure gauge oil pressure input hole, 48-the first screwed hole, 49-pilot operated compound relief valve fluid hole, 50-pilot operated compound relief valve inlet opening, 51-3-position 4-way torch integrated reversal valve P hole, 52-3-position 4-way torch integrated reversal valve A hole, 53-3-position 4-way torch integrated reversal valve T hole, 54-the second screwed hole, 55-3-position 4-way torch integrated reversal valve B hole, 56-the first integrated package fuel feed hole, 57-the first integrated package spill port, 58-the 3rd screwed hole, 59-B hole entrance, 60-the second plug screwed hole, 61-A hole exits, the control port of 62-sequence valve, the outlet of 63-check valve, 64-the 3rd screw, 65-the 4th screw, 66-the 5th screw, 67-the 6th screw, 68-the second integrated package valve seat, 69-the 3rd choke valve entrance, 70-the 3rd choke valve outlet, 71-the 4th screwed hole, 72-two-bit triplet solenoid directional control valve A hole, 73-the first hydraulic cylinder rod chamber connecting hole, 74-the second throttling valve inlet, 75-the 3rd plug screwed hole, 76-the first pressure switch connecting thread hole, 77-first throttle valve outlet port, 78-the first hydraulic cylinder rodless cavity connecting hole, 79-the 5th screwed hole, 80-first throttle valve inlet, 81-the 6th screwed hole, 82-the second throttling valve outlet port, 83-two-bit triplet solenoid directional control valve B hole, 84-two-bit triplet solenoid directional control valve P hole, 85-the 7th screwed hole, 86-the 3rd choke valve outlet connecting hole, 87-the 4th plug screwed hole, 88-the 8th screwed hole, 89-the second throttling valve outlet port connecting hole, 90-first throttle valve inlet connecting hole, 91-the 3rd integrated package valve seat, 92-the 7th screw, 93-the 8th screw, 94-the 9th screw, 95-the 5th plug screwed hole, 96-the 6th plug screwed hole, 97-the 3rd Pressure gauge oil pressure input hole, 98-the 7th plug screwed hole, 99-3-position 4-way solenoid directional control valve A hole, 100-3-position 4-way solenoid directional control valve P hole, 101-the 9th screwed hole, 102-3-position 4-way solenoid directional control valve B hole, 103-3-position 4-way solenoid directional control valve T hole, 104-the tenth screwed hole, 105-sequence valve inlet opening, 106-sequence valve control oilhole, 107-sequence valve spill port, 108-direct-acting overflow valve fuel feed hole, 109-direct-acting overflow valve spill port, 110-the 11 screwed hole, 111-the 8th plug screwed hole, 112-the second Pressure gauge oil pressure input hole, 113-check valve entrance, 114-sequence valve control mouth, 115-the second hydraulic cylinder rod chamber connecting hole, 116-the second hydraulic cylinder rodless cavity connecting hole, 117-the 12 screwed hole, 118-the 3rd integrated package fuel feed hole, 119-the 3rd integrated package spill port, 120-the tenth screw, 121-the 11 screw, 122-the 4th integrated package valve seat, 123-the 13 screwed hole, 124-3-position 4-way hand-operated direction valve P mouth, 125-3-position 4-way hand-operated direction valve A mouth, 126-3-position 4-way hand-operated direction valve T mouth, 127-3-position 4-way hand-operated direction valve B mouth, 128-the 9th plug screwed hole, 129-electromagnetic relief valve fluid hole, 130-the 14 screwed hole, 131-electromagnetic relief valve inlet opening, 132-the tenth plug screwed hole, 133-the 4th Pressure gauge oil pressure input hole, 134-the 3rd hydraulic cylinder rod chamber connecting hole, 135-the 4th integrated package fuel feed hole, 136-the 4th integrated package spill port, 137-the 15 screwed hole, 138-the 11 plug screwed hole, 139-the 3rd hydraulic cylinder rodless cavity connecting hole.
Detailed description of the invention:
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 2, the control element of this hydraulic pressure teaching synthetic experimental bench is all integrated in the first integrated package 35, the second integrated package 36, the 3rd integrated package 37, the 4th integrated package 38.
As shown in Figure 3, the first integrated package 35 is made up of 3-position 4-way torch integrated reversal valve 6, pilot operated compound relief valve 3, the first screw 41, the second screw 42, the first integrated package valve seat 43 and plug 44. Pilot operated compound relief valve 3 is connected with the first screwed hole 48 on the first integrated package valve seat 43 by the second screw 42,3-position 4-way torch integrated reversal valve 6 is connected with the second screwed hole 54 on the first integrated package valve seat 43 by the first screw 41, and the first integrated package valve seat 43 is connected on experimental stand 39 by the 3rd screwed hole 58.
Shown in Fig. 4, Fig. 5, the first Pressure gauge oil pressure input hole 47, pilot operated compound relief valve inlet opening 50,3-position 4-way torch integrated reversal valve P hole 51, the first integrated package fuel feed hole 56, sequence valve control port 62, check valve export 63 inside and are connected, and its interior oil hydraulic coupling is the set pressure of pilot operated compound relief valve 3; First throttle valve inlet connecting hole 45, the first plug screwed hole 46, pilot operated compound relief valve fluid hole 49,3-position 4-way torch integrated reversal valve T hole 53, the first integrated package spill port 57, the second plug screwed hole 60 inside are connected, and are directly connected with return filter; 3-position 4-way torch integrated reversal valve A hole 52 and A hole exits 61 internal communication; 3-position 4-way torch integrated reversal valve B hole 55 and B hole entrance 59 internal communication.
As shown in Figure 6, the second integrated package 36 is made up of first throttle valve 7, the second choke valve 8, the 3rd choke valve 9, two-bit triplet reversal valve 10, plug 44, the 3rd screw 64, the 4th screw 65, the 5th screw 66, the 6th screw 67, the second integrated package valve seat 68. First throttle valve 7 is connected with the 5th screwed hole 79 on the second integrated package valve seat 68 by the 3rd screw 64; The second choke valve 8 is connected with the 6th screwed hole 81 on the second integrated package valve seat 68 by the 4th screw 65; The 3rd choke valve 9 is connected with the 7th screwed hole 85 on the second integrated package valve seat 68 by the 6th screw 67; Two-bit triplet solenoid directional control valve is connected with the 4th screwed hole 71 on the second integrated package valve seat 68 by the 5th screw 66; The second integrated package valve seat 68 is connected on experimental stand 39 by the 8th screwed hole 88.
Shown in Fig. 7, Fig. 8, two-bit triplet solenoid directional control valve A hole 72, the second throttling valve inlet 74, first throttle valve outlet port 77, the first hydraulic cylinder rodless cavity connecting hole 78 inside are connected, and are directly connected to the rodless cavity of the first hydraulic cylinder; The 3rd choke valve entrance 69, two-bit triplet solenoid directional control valve B hole 83, the 4th plug screwed hole 87 inside are connected; The first hydraulic cylinder rod chamber connecting hole 73, two-bit triplet solenoid directional control valve P hole 84 internal communication, be connected to the rod chamber of the first hydraulic cylinder; The 3rd choke valve outlet 70, the 3rd choke valve outlet connecting hole 86 internal communication, be connected on the B hole entrance 59 of the first integrated package valve seat 43.
As shown in Figure 9, the 3rd integrated package 37 is made up of direct-acting overflow valve 16, sequence valve 19,3-position 4-way solenoid directional control valve 20, one way pressure-reducing valve 21, the 3rd integrated package valve seat 91, the 7th screw 92, the 8th screw 93, the 9th screw 94. Direct-acting overflow valve 16 is connected with the 11 screwed hole 110 on the 3rd integrated package valve seat 91 by the 7th screw 92; Sequence valve 19 is connected with the tenth screwed hole 104 on the 3rd integrated package valve seat 91 by the 8th screw 93; 3-position 4-way solenoid directional control valve 20 is connected with the 9th screwed hole 101 on the 3rd integrated package valve seat 91 by the 9th screw 94 with one way pressure-reducing valve 21; The 3rd integrated package valve seat 91 is connected on experimental stand 39 by the 12 screwed hole 117.
Shown in Figure 10, Figure 11, the 5th plug screwed hole 95, the 7th plug screwed hole 98,3-position 4-way solenoid directional control valve P hole 100, sequence valve inlet opening 105, direct-acting overflow valve fuel feed hole 108, the second Pressure gauge oil pressure input hole 112, check valve entrance 113, the 3rd integrated package fuel feed hole 118 inside are connected, and its interior oil hydraulic coupling is the set pressure of direct-acting overflow valve 16; The 6th plug screwed hole 96,3-position 4-way solenoid directional control valve T hole 103, sequence valve spill port 107, direct-acting overflow valve spill port 109, the 8th plug screwed hole 111 are connected with the 3rd integrated package spill port 119 inside, are connected on return filter 4; 3-position 4-way solenoid directional control valve B hole 102 is connected with the second hydraulic cylinder rod chamber connecting hole 115; The 3rd Pressure gauge oil pressure input hole 97,3-position 4-way solenoid directional control valve A hole 99 are connected with the second hydraulic cylinder rodless cavity connecting hole 116.
As shown in figure 12, the 4th integrated package 38 is made up of electromagnetic relief valve 28,3-position 4-way hand-operated direction valve 30, bidirectional hydraulic lock 31, the tenth screw the 120, the 11 screw 121, the 4th integrated package valve seat 122. Electromagnetic relief valve 28 is connected with the 13 screwed hole 123 on the 4th integrated package valve seat 122 by the 11 screw 121 with bidirectional hydraulic lock 31; Electromagnetic relief valve 28 is connected with the 14 screwed hole 130 on the 4th integrated package valve seat 122 by the tenth screw 120; The 4th integrated package valve seat 122 is connected on experimental stand 39 by the 15 screwed hole 137.
Shown in Figure 13, Figure 14,3-position 4-way hand-operated direction valve P mouth 124, electromagnetic relief valve inlet opening 131, the tenth plug screwed hole 132, the 4th Pressure gauge oil pressure input hole 133, the 4th integrated package fuel feed hole 135 inside are connected, and its interior oil hydraulic coupling is the set pressure of electromagnetic relief valve 28; 3-position 4-way hand-operated direction valve T mouth 126, electromagnetic relief valve fluid hole 129, the 4th integrated package spill port the 136, the 11 plug screwed hole 138 inside are connected, and are connected to fuel tank 34; 3-position 4-way hand-operated direction valve A mouth 125, the 3rd hydraulic cylinder rodless cavity connecting hole 139 are connected; The 3rd hydraulic cylinder rod chamber connecting hole 134,3-position 4-way hand-operated direction valve B mouth 127 are connected.
Hydraulic pressure fundamental circuit explanation in the utility model:
(1) relief valve pressure regulating loop
Shown in the A of Ru Tu1Zhong loop, relief valve pressure regulating loop. Open the first ball valve 1, starter receiver pump 2, regulates pilot operated compound relief valve 3, and the moment is observed the pressure instruction of the first Pressure gauge 5, the actual output pressure value of definite gear pump 2 thus.
(2) throttling speed control circuit
Throttling speed control circuit is as shown in loop B in Fig. 1. Rodless cavity, rod chamber and rodless cavity bypass ends at the first hydraulic cylinder 13 are provided with three choke valves, can realize respectively entrance throttle governing circuit, meter out speed governing and bypass throttle speed governing. Here describe with the process of stretching out of the first hydraulic cylinder 13.
1) entrance throttle governing circuit loop
The second choke valve 8 cuts out completely, and the 3rd choke valve 9 is opened completely, and the left position work of 3-position 4-way torch integrated reversal valve 6, by regulating the speed of stretching out of aperture control the first hydraulic cylinder 13 of first throttle valve 7. Hydraulic oil circuit: left position → first throttle valve 7 → the first hydraulic cylinder 13 rodless cavities of gear pump 2 → 3-position 4-way torch integrated reversal valve 6; Right position → the 3rd choke valve 9 → 3-position 4-way torch integrated reversal valve 6 left position → fuel tanks 34 of first hydraulic cylinder 13 rod chambers → two position, three-way electromagnetic change valve 10.
2) meter out speed control loop
The second choke valve 8 cuts out completely, and first throttle valve 7 is opened completely, and the left position work of 3-position 4-way torch integrated reversal valve 6, by regulating the speed of stretching out of aperture control the first hydraulic cylinder 13 of the 3rd choke valve 9. Hydraulic oil circuit is identical with entrance throttle governing circuit loop.
3) by-pass throttle speed control loop
First throttle valve 7, the 3rd choke valve 9 are opened completely, and the left position work of 3-position 4-way torch integrated reversal valve 6, by regulating the speed of stretching out of aperture control the first hydraulic cylinder 13 of the second choke valve 8. Hydraulic oil circuit: left position → meter in valve 7 → the first hydraulic cylinder 13 rodless cavity+the second choke valve 8 → fuel tanks 34 of gear pump 2 → 3-position 4-way torch integrated reversal valve 6; Right position → the 3rd choke valve 9 → 3-position 4-way torch integrated reversal valve 6 left position → fuel tanks 34 of first hydraulic cylinder 13 rod chambers → two position, three-way electromagnetic change valve 10.
(3) differential quick loop
Shown in differential quick loop Ru Tu1Zhong loop C. Close the second choke valve 8, first throttle valve 7 standard-sized sheets, 3-position 4-way torch integrated reversal valve 6 left position work, the electromagnet 3YA of two position, three-way electromagnetic change valve 10 powers on, the work of left position. Hydraulic oil circuit: left position → first throttle valve 7 → the first hydraulic cylinder 13 rodless cavities of gear pump 2 → 3-position 4-way torch integrated reversal valve 6; Left position+gear pump 2 fuel feeding → the first hydraulic cylinder 13 rodless cavities of first hydraulic cylinder 13 rod chambers → two position, three-way electromagnetic change valve 10. The operation principle in described differential quick loop is that hydraulic oil that hydraulic oil and gear pump 2 that the first hydraulic cylinder 13 rod chambers are refluxed are exported superposes and is filled with the first hydraulic cylinder 13 rodless cavities, has increased fuel delivery, has therefore accelerated the piston speed of service of the first hydraulic cylinder 13.
(4) sequentially-operating loop
Shown in the D of Ru Tu1Zhong loop, sequentially-operating loop. 3-position 4-way torch integrated reversal valve 6,3-position 4-way solenoid directional control valve 20 coordinate with the first pressure switch 11, the second pressure switch 23, the first travel switch 12, the second travel switch 24, realize the sequentially-operating of the first hydraulic cylinder 13 and the second hydraulic cylinder 25. Close the second choke valve 8, first throttle valve 7, the 3rd choke valve 9 standard-sized sheets, the controlled pressure of setting the first pressure switch 11 and the second pressure switch 23. Can realize sequentially-operating by the setting program of PLC, be exemplified below: starter receiver pump 2, the controlled pressure of setting pilot operated compound relief valve 3 and direct-acting overflow valve 16; The electromagnet 1YA of 3-position 4-way torch integrated reversal valve 6 powers on, the work of left position, and the piston rod of the first hydraulic cylinder 13 stretches out, and triggers the first pressure switch 11 signals after putting in place; The electromagnet 4YA of 3-position 4-way solenoid directional control valve 20 powers on, the work of left position, and the piston rod of the second hydraulic cylinder 25 stretches out, and triggers the second pressure switch 23 signals after putting in place; The electromagnet 2YA of 3-position 4-way torch integrated reversal valve 6 powers on, the work of right position, and the piston rod of the first hydraulic cylinder 13 is retracted, and triggers the first travel switch 12 signals after putting in place; The electromagnet 5YA of 3-position 4-way solenoid directional control valve 20 powers on, the work of right position, and the piston rod of the second hydraulic cylinder 25 is retracted, and triggers the second travel switch 24 signals after putting in place; The electromagnet 1YA of 3-position 4-way torch integrated reversal valve 6 powers on, the work of left position, and the piston rod of the first hydraulic cylinder 13 stretches out, and can continue circulation and realize continuous sequentially-operating.
(5) Decompression Controlling loop
Shown in the E of Ru Tu1Zhong loop, Decompression Controlling loop. Start vane pump 15, set up the safe pressure of direct-acting overflow valve 16, the electromagnet 4YA of 3-position 4-way solenoid directional control valve 20 powers on, the work of left position, the piston rod of the second hydraulic cylinder 25 stretches out arrival right-hand member, now regulate one way pressure-reducing valve 21 handles, observe the pressure instruction of the second Pressure gauge 18, the 3rd Pressure gauge 22.
(6) double pump oil supply loop
Double pump oil supply loop is as shown in loop F in Fig. 1. Simultaneously starter receiver pump 2 and vane pump 15, the single oil pump feed can realize double pump associating fuel feeding when quick, low speed time. The maximum working pressure of system when pilot operated compound relief valve 3 is set respectively double pump fuel feeding and gear pump 2 independent fuel feeding with external control sequence valve 19. In the time that the very little need of load of the first hydraulic cylinder 13 move fast, gear pump 2 and vane pump 15 are simultaneously to the first hydraulic cylinder 13 fuel feeding, the piston rapid movement of the first hydraulic cylinder 13; When the first hydraulic cylinder 13 loads increase, system pressure raises, while reaching the set pressure of external control sequence valve 19, vane pump 15 off-loads, check valve 17 ends, and gear pump 2 is separately to the first hydraulic cylinder 13 fuel feeding, flow reduces, and the piston speed of service of the first hydraulic cylinder 13 slows down.
(7) self-locking pressure dwelling loop
Self-locking pressure dwelling loop is as shown in loop G in Fig. 1. Start axial plunger pump 26, electromagnetic relief valve 28 is loaded simultaneously, 3-position 4-way hand-operated direction valve 30 right position work, the 3rd hydraulic cylinder 33 rod chamber oil-feeds; Adjust the operating pressure of electromagnetic relief valve 28, observe the show value of the 4th Pressure gauge 29, the 5th Pressure gauge 32; Meta got back to by operation 3-position 4-way hand-operated direction valve 30 or electromagnetic relief valve 28 unloads, and the show value that can be observed the 4th Pressure gauge 29 has been reduced to and has approached 0 value, and the show value of the 5th Pressure gauge 32 is still operating pressure value.
(8) relief circuit
Relief circuit is as shown in loop H, loop I in Fig. 1.
1) relief circuit of employing reversal valve Median Function
As shown in loop H in Fig. 1, adopt the hand-operated direction valve with M type Median Function to form relief circuit. When 3-position 4-way hand-operated direction valve 30 is in the time working for left or right, system can keep the setting operating pressure of electromagnetic relief valve 28, in the time that 3-position 4-way hand-operated direction valve 30 is got back to meta, axial plunger pump 26 system unloaded, hydraulic circuit is as follows: axial plunger pump 26 → inlet oil filter 27 → 3-position 4-way hand-operated direction valve 30 → fuel tank 34.
2) relief circuit of employing electromagnetic relief valve
As shown in loop I in Fig. 1, in the time of the electromagnet 6YA of electromagnetic relief valve 28 no power, the pressure oil that plunger displacement pump 26 is exported flows back to fuel tank 34 through the draining chamber of electromagnetic relief valve 28, and now electromagnetic relief valve 28 plays the effect of unloader. In the time of the electromagnet 6YA of electromagnetic relief valve 28 energising, electromagnetic relief valve 28 plays the effect of overflow valve, and the safe-working pressure of hydraulic system is provided.
Claims (1)
1. a hydraulic pressure teaching synthetic experimental bench, comprise base support, form with operating desk and the electric control box of experimental stand (39), it is characterized in that: on described operating desk, be fixed with the first integrated package (35), the second integrated package (36), the 3rd integrated package (37) and the 4th integrated package (38), wherein, the control valve piece in each integrated package combines according to board-like connected mode;
The first integrated package (35) is made up of 3-position 4-way torch integrated reversal valve (6), pilot operated compound relief valve (3), the first screw (41), the second screw (42), the first integrated package valve seat (43) and plug (44); Pilot operated compound relief valve (3) is connected with the first screwed hole (48) on the first integrated package valve seat (43) by the second screw (42), 3-position 4-way torch integrated reversal valve (6) is connected with the second screwed hole (54) on the first integrated package valve seat (43) by the first screw (41), and the first integrated package valve seat (43) is connected on experimental stand (39) by the 3rd screwed hole (58); The first Pressure gauge oil pressure input hole (47), pilot operated compound relief valve inlet opening (50), 3-position 4-way torch integrated reversal valve P hole (51), the first integrated package fuel feed hole (56), sequence valve control port (62), check valve outlet (63) inside are connected, and its interior oil hydraulic coupling is the set pressure of pilot operated compound relief valve (3); First throttle valve inlet connecting hole (45), the first plug screwed hole (46), pilot operated compound relief valve fluid hole (49), 3-position 4-way torch integrated reversal valve T hole (53), the first integrated package spill port (57), the second plug screwed hole (60) inside are connected, and are directly connected with return filter; 3-position 4-way torch integrated reversal valve A hole (52) and A hole exits (61) internal communication; 3-position 4-way torch integrated reversal valve B hole (55) and B hole entrance (59) internal communication;
The second integrated package (36) is made up of first throttle valve (7), the second choke valve (8), the 3rd choke valve (9), two-bit triplet reversal valve (10), plug (44), the 3rd screw (64), the 4th screw (65), the 5th screw (66), the 6th screw (67) and the second integrated package valve seat (68); First throttle valve (7) is connected with the 5th screwed hole (79) on the second integrated package valve seat (68) by the 3rd screw (64); The second choke valve (8) is connected with the 6th screwed hole (81) on the second integrated package valve seat (68) by the 4th screw (65); The 3rd choke valve (9) is connected with the 7th screwed hole (85) on the second integrated package valve seat (68) by the 6th screw (67); Two-bit triplet solenoid directional control valve is connected with the 4th screwed hole (71) on the second integrated package valve seat (68) by the 5th screw (66); The second integrated package valve seat (68) is connected on experimental stand (39) by the 8th screwed hole (88); Two-bit triplet solenoid directional control valve A hole (72), the second throttling valve inlet (74), first throttle valve outlet port (77), the first hydraulic cylinder rodless cavity connecting hole (78) inside are connected, and are directly connected to the rodless cavity of the first hydraulic cylinder; The 3rd choke valve entrance (69), two-bit triplet solenoid directional control valve B hole (83), the 4th plug screwed hole (87) inside are connected; The first hydraulic cylinder rod chamber connecting hole (73), two-bit triplet solenoid directional control valve P hole (84) internal communication, be connected to the rod chamber of the first hydraulic cylinder; The 3rd choke valve outlet (70), the 3rd choke valve outlet connecting hole (86) internal communication, be connected on the B hole entrance (59) of the first integrated package valve seat 43;
The 3rd integrated package (37) is made up of direct-acting overflow valve (16), sequence valve (19), 3-position 4-way solenoid directional control valve (20), one way pressure-reducing valve (21), the 3rd integrated package valve seat (91), the 7th screw (92), the 8th screw (93) and the 9th screw (94); Direct-acting overflow valve (16) is connected with the 11 screwed hole (110) on the 3rd integrated package valve seat (91) by the 7th screw (92); Sequence valve (19) is connected with the tenth screwed hole (104) on the 3rd integrated package valve seat (91) by the 8th screw (93); 3-position 4-way solenoid directional control valve (20) is connected with the 9th screwed hole (101) on the 3rd integrated package valve seat (91) by the 9th screw (94) with one way pressure-reducing valve (21); The 3rd integrated package valve seat (91) is connected on experimental stand (39) by the 12 screwed hole (117); The 5th plug screwed hole (95), the 7th plug screwed hole (98), 3-position 4-way solenoid directional control valve P hole (100), sequence valve inlet opening (105), direct-acting overflow valve fuel feed hole (108), the second Pressure gauge oil pressure input hole (112), check valve entrance (113), the 3rd integrated package fuel feed hole (118) inside are connected, and its interior oil hydraulic coupling is the set pressure of direct-acting overflow valve (16); The 6th plug screwed hole (96), 3-position 4-way solenoid directional control valve T hole (103), sequence valve spill port (107), direct-acting overflow valve spill port (109), the 8th plug screwed hole (111) are connected with the 3rd integrated package spill port (119) inside, are connected on return filter (4); 3-position 4-way solenoid directional control valve B hole (102) is connected with the second hydraulic cylinder rod chamber connecting hole (115); The 3rd Pressure gauge oil pressure input hole (97), 3-position 4-way solenoid directional control valve A hole (99) are connected with the second hydraulic cylinder rodless cavity connecting hole (116);
The 4th integrated package (38) is made up of electromagnetic relief valve (28), 3-position 4-way hand-operated direction valve (30), bidirectional hydraulic lock (31), the tenth screw (120), the 11 screw (121) and the 4th integrated package valve seat (122); Electromagnetic relief valve (28) is connected with the 13 screwed hole (123) on the 4th integrated package valve seat (122) by the 11 screw (121) with bidirectional hydraulic lock (31); Electromagnetic relief valve (28) is connected with the 14 screwed hole (130) on the 4th integrated package valve seat (122) by the tenth screw (120); The 4th integrated package valve seat (122) is connected on experimental stand (39) by the 15 screwed hole (137); 3-position 4-way hand-operated direction valve P mouth (124), electromagnetic relief valve inlet opening (131), the tenth plug screwed hole (132), the 4th Pressure gauge oil pressure input hole (133), the 4th integrated package fuel feed hole (135) inside are connected, and its interior oil hydraulic coupling is the set pressure of electromagnetic relief valve (28); 3-position 4-way hand-operated direction valve T mouth (126), electromagnetic relief valve fluid hole (129), the 4th integrated package spill port (136), the 11 plug screwed hole (138) inside are connected, and are connected to fuel tank (34); 3-position 4-way hand-operated direction valve A mouth (125), the 3rd hydraulic cylinder rodless cavity connecting hole (139) are connected; The 3rd hydraulic cylinder rod chamber connecting hole (134), 3-position 4-way hand-operated direction valve B mouth (127) are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521137795.7U CN205247772U (en) | 2015-12-30 | 2015-12-30 | Hydraulic pressure teaching comprehensive experiment platform |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521137795.7U CN205247772U (en) | 2015-12-30 | 2015-12-30 | Hydraulic pressure teaching comprehensive experiment platform |
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| CN205247772U true CN205247772U (en) | 2016-05-18 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762987A (en) * | 2017-01-26 | 2017-05-31 | 中国人民解放军装甲兵技术学院 | A kind of hydraulic system of engineering vehicle combined training platform |
| CN108766192A (en) * | 2018-05-24 | 2018-11-06 | 罗诗敏 | Fluid Drive Experiment platform |
| CN109192046A (en) * | 2018-09-28 | 2019-01-11 | 西北工业大学 | A kind of hydraulic circuit comprehensive experiment table Internet-based |
| CN109345943A (en) * | 2018-10-31 | 2019-02-15 | 西安航空学院 | A kind of Hydraulic Elements theory Internet-based and experimental synchronous tutoring system |
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2015
- 2015-12-30 CN CN201521137795.7U patent/CN205247772U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762987A (en) * | 2017-01-26 | 2017-05-31 | 中国人民解放军装甲兵技术学院 | A kind of hydraulic system of engineering vehicle combined training platform |
| CN108766192A (en) * | 2018-05-24 | 2018-11-06 | 罗诗敏 | Fluid Drive Experiment platform |
| CN109192046A (en) * | 2018-09-28 | 2019-01-11 | 西北工业大学 | A kind of hydraulic circuit comprehensive experiment table Internet-based |
| CN109345943A (en) * | 2018-10-31 | 2019-02-15 | 西安航空学院 | A kind of Hydraulic Elements theory Internet-based and experimental synchronous tutoring system |
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