CN203730422U - load system for detecting platform of hydrostatic drive device - Google Patents
load system for detecting platform of hydrostatic drive device Download PDFInfo
- Publication number
- CN203730422U CN203730422U CN201320870743.5U CN201320870743U CN203730422U CN 203730422 U CN203730422 U CN 203730422U CN 201320870743 U CN201320870743 U CN 201320870743U CN 203730422 U CN203730422 U CN 203730422U
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- loop
- fuel tank
- way
- valve
- pump
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Abstract
The utility model discloses a load system for a detecting platform of a hydrostatic drive device. According to the main structure of the load system, a loading pump oil compensating loop is formed by connecting a loop A and a loop B in parallel, the loop A and the loop B are respectively formed by connecting two check valves in series, an oil tank, a one-way hydraulic pump and the loading pump oil compensating loop are connected in series to form a closed loop, the two ends of a loading pump are communicated with the middle position of the loop A and the middle position of the loop B respectively, a pilot operated compound relief valve is connected in parallel in front of the loading pump oil compensating loop to protect the whole loop, and an electric-hydraulic pilot proportional overflow valve is connected in series behind the loading pump oil compensating loop to adjust the oil pressure of the whole loop and the work pressure of the loading pump. The load system has the advantages that the loading pump can directly rotate forwards and backwards without stopping the one-way hydraulic pump, a solenoid valve is sensitive in response, and consumption is low.
Description
Technical field
The utility model relates to a kind of load system, relates in particular to a kind of load system using in hydrostatic transmission detection platform.
Background technique
Basic parameter, technical requirements, test method, inspection rule, mark and packaging to hydrostatic transmission in People's Republic of China's machinery industry standard have all been done requirement, all need to measure input speed, input torque, output speed, output torque and unloaded output speed while wherein test.Standard has been made regulation to experimental facilities for this reason, and the input end of hydrostatic transmission to be checked is driven by motor, and between motor and the input end of hydrostatic transmission, once mounting has rotational speed meters and torque meter, measures input speed and input torque; Output terminal at hydrostatic transmission to be checked is connected with deceleration loading device, and rotational speed meters and torque meter are installed between output terminal and deceleration loading device, measures output speed and output torque with this.
On signal detecting platform before, load is also to be provided by oil hydraulic pump conventionally, but in load system, internally piloted valve stretches out valve rod conventionally, by rotation or movement electronic, pneumatic, hydraulic actuator control spool, long-term action, valve stem seal performance reduces, and internal and outernal leakage becomes a difficult problem to be solved; And complex structure, manufacture cost is higher, slow in one's movements, and energy consumption is larger.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of compact structure, can realizes the hydrostatic transmission detection platform load system of load pump bidirectional rotation.
For solving the problems of the technologies described above, the technological scheme that the utility model hydrostatic transmission detection platform load system is taked is as follows:
A kind of hydrostatic transmission detection platform load system, its innovative point is: comprise fuel tank, one-way hydraulic pump, load pump, load pump feed circuit;
Described load pump feed circuit structure is: one-way valve a and one-way valve b that installation direction is identical are composed in series loop A, one-way valve c and one-way valve d that installation direction is identical are composed in series loop B, described loop A and loop B parallel connection, the filler opening in two loops is connected, and oil outlet is connected; Described load pump feed circuit is connected on fuel tank and one-way hydraulic pumps between hydraulic fluid port;
Described load pump is bidirectional hydraulic pump, and one end is connected with loop A, and connection part is between one-way valve a and one-way valve b; The other end is connected with loop B, and connection part is between one-way valve c and one-way valve d;
Described one-way hydraulic pump is driven by motor by coupling; Oil absorption filter is installed in fuel tank, and described oil absorption filter is connected with one-way hydraulic pump, and between fuel tank and one-way hydraulic pump, stop valve is installed.
On this basis, electricity-liquid guide proportion relief valve is installed between the oil outlet of described load pump feed circuit and fuel tank.
On this basis, in described hydrostatic transmission detection platform load system, a pilot operated compound relief valve is installed, the filler opening of described pilot operated compound relief valve is connected to load pump feed circuit and one-way hydraulic and pumps on the oil circuit that hydraulic fluid port is connected, and oil outlet is communicated with fuel tank.
On this basis, a high pressure filter is also installed after the oil outlet of described one-way hydraulic pump, after electricity-liquid guide proportion relief valve oil outlet, before fuel tank, return filter is installed, air filter is installed simultaneously on fuel tank.
On this basis, a heater and a temperature transducer are installed in described fuel tank, cooler was installed simultaneously before return filter.
On this basis, described hydrostatic transmission detection platform load system is provided with flow monitoring system before cooler after electricity-liquid guide proportion relief valve oil outlet, described flow monitoring system structure is: flowmeter is in parallel with two-position two-way solenoid valve, and two-position two-way solenoid valve is normally open, and oil outlet is towards fuel tank.
The beneficial effects of the utility model: advantage of the present utility model has: 1, use an equipment just can realize the Double-directional rotary of load pump, and one-way hydraulic pump need not be stopped and just can realize; 2, electricity-liquid guide proportion relief valve is installed in system, can be regulated the working pressure of load pump, and be quick on the draw, influence factor is few; 3, a pilot operated compound relief valve is installed in oil circuit, can be protected this system, make in the time that load pump stops operating, hydraulic oil also can flow back to fuel tank smoothly; 4, a high pressure filter is also installed after the oil outlet of one-way hydraulic pump, protection one-way hydraulic pump downstream components is not contaminated, installs back oil strainer, can reduce the contaminated degree of fluid in fuel tank; 5, a heater and a temperature transducer are installed in fuel tank, can ensure that hydraulic oil is in the most applicable temperature work, and cooler was installed before return filter, make the hydraulic oil can be fully cooling in the time getting back to fuel tank; 6, flow monitoring system is installed, can this loading system of Real-Time Monitoring whether is normally turned round.
Brief description of the drawings
Be illustrated in figure 1 the oil circuit figure of the utility model hydrostatic transmission detection platform load system.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further details.
The utility model hydrostatic transmission detection platform load system is mainly by forming with lower component: fuel tank 1, one-way hydraulic pump 2, load pump 3, load pump feed circuit 4.
As shown in the figure, load pump feed circuit 4 is formed by loop A4-1 and loop B4-2 parallel combination, loop A4-1 is in series by one-way valve a5 and one-way valve b6, the installation direction of two one-way valves is identical, loop B4-2 is in series by one-way valve c7 and one-way valve d8, the installation direction of two one-way valves is identical, and loop A4-1 and loop B4-2 need to be connected the filler opening in two loops in the time of parallel connection, and oil outlet is connected.
Fuel tank 1, one-way hydraulic pump 2, load pump feed circuit 4 are composed in series a loop successively, and the inlet port of one-way hydraulic pump 2 is connected with fuel tank 1, and oil outlet is connected with the filler opening of load pump feed circuit 4.A load pump 3 is also installed in load pump feed circuit 4, and the oil circuit between one end of this load pump 3 and one-way valve a5 and one-way valve b6 is connected, and the oil circuit between the other end and one-way valve c7 and one-way valve d8 is connected.In order to adapt to the clockwise and anticlockwise of detection platform, this load pump 3 is selected bidirectional hydraulic pump.
One-way hydraulic pump 2 is driven by motor 10 by coupling 9, and in order to adapt to the startup characteristic frequently of this load system, coupling 9 of the present utility model is selected elastic coupling flexible coupling.
An oil absorption filter 11 is installed in fuel tank 1, and between fuel tank 1 and one-way hydraulic pump 2, a stop valve 12 is installed, protect one-way hydraulic pump 2 not to be subject to the erosion of hydraulic oil by these modes.In order to ensure not pollute downstream components from one-way hydraulic pump 2 hydraulic oil out, at the oil outlet place of one-way hydraulic pump 2, a high pressure filter 13 is installed.
For the hydraulic oil pollution that the hydraulic oil reducing in fuel tank 1 is refluxed, between load pump feed circuit 4 and fuel tank 1, return filter 14 is also installed, filter out the impurity in oil return with this; Except the hydraulic oil refluxing can pollute the hydraulic oil in fuel tank 1, air also can pollute hydraulic oil, so air filter 15 is also installed on fuel tank 1, avoids pollutant to enter contaminated liquid force feed in fuel tank 1 with air.
After the oil outlet of one-way hydraulic pump 2, before load pump feed circuit 4, be also installed in parallel a relief valve 16, the filler opening of relief valve 16 is connected on the oil circuit between load pump feed circuit 4 and one-way hydraulic pump 2, and oil outlet is communicated with fuel tank 1.In this hydrostatic transmission detection platform load system, because flow is large, pressure is high, so select pilot operated compound relief valve.Just because of this relief valve 16 has been installed, draining can oil pressure is higher in oil circuit time, plays the effect of protection oil circuit.
Detect when test doing hydrostatic transmission, need to load different loads, therefore also need to a regulator be installed in oil circuit and regulate the oil pressure at load pump 3 two ends.In order to address this problem, the measure of taking in the utility model is: after load pump feed circuit 4, electricity-liquid guide proportion relief valve 17 is installed before return filter 14, this valve filler opening is connected with the fuel-displaced pipeline of load pump feed circuit 4, and oil outlet return filter 14 is connected.By changing the size of electrical current, the adjusting pressure while regulating unlatching electricity-liquid guide proportion relief valve 17 to open, thus realize the maximum service pressure of load pump 3.
Hydraulic oil has the optimum working temperature of oneself in the time of work, in order to reach the optimum working temperature of hydraulic oil, in fuel tank 1, also fill a heater 18 and a temperature transducer 19, regulated at any time by the temperature that detects at any time hydraulic oil, made hydraulic oil keep a steady temperature.Meanwhile, when hydraulic oil flows in oil circuit, due to a variety of causes, temperature can rise, so oil temperature was reduced through supercooler 20 before hydraulic oil flows back to fuel tank 1.
In order to understand the discharge capacity of load pump 3, a flow monitoring system 21 has also been installed in this oil circuit, this flow monitoring system 21 is formed in parallel by flowmeter 21-1 and two-position two-way solenoid valve 21-2, after being arranged on the oil outlet of electricity-liquid guide proportion relief valve 17, before cooler 20, and the oil outlet of two-position two-way solenoid valve 21-2 is towards fuel tank, is normally open.
Working principle: stop valve 12 is opened, starting electrical machinery 10, motor 10 drives one-way hydraulic pump 2 by coupling 9, hydraulic oil is extracted out from fuel tank 1, flowing to load pump feed circuit 4 through after high pressure filter 13, in load pump feed circuit 4, there are two flow directions, one is that hydraulic oil flows to load pump 3 through one-way valve a5, flow to electricity-liquid guide proportion relief valve 17 through one-way valve d8 again, flow back to fuel tank; Another is that hydraulic oil flows to load pump 3 through one-way valve c7, then flows to electricity-liquid guide proportion relief valve 17 through one-way valve b6, flows back to fuel tank.If load pump 3 stops operating, one-way hydraulic pump 2 is again ceaselessly when being pressed into hydraulic oil in oil circuit, and when hydraulic fluid pressure is when opening relief valve 16, relief valve 16 is opened, and hydraulic oil directly flows back to fuel tank, has protected oil circuit.Two-position two-way solenoid valve 21-2 is normally open, while detecting hydraulic fluid flow rate, by the solenoid valve energising of two-position two-way solenoid valve 21-2, the loop that two-position two-way solenoid valve 21-2 is housed is disconnected, make hydraulic oil through flowmeter 21-1, can know hydraulic fluid flow rate by the data that read flowmeter 21-1.
Claims (6)
1. a hydrostatic transmission detection platform load system, is characterized in that: comprise fuel tank, one-way hydraulic pump, load pump, load pump feed circuit;
Described load pump feed circuit structure is: one-way valve a and one-way valve b that installation direction is identical are composed in series loop A, one-way valve c and one-way valve d that installation direction is identical are composed in series loop B, described loop A and loop B parallel connection, the filler opening in two loops is connected, and oil outlet is connected; Described load pump feed circuit is connected on fuel tank and one-way hydraulic pumps between hydraulic fluid port;
Described load pump is bidirectional hydraulic pump, and one end is connected with loop A, and connection part is between one-way valve a and one-way valve b; The other end is connected with loop B, and connection part is between one-way valve c and one-way valve d;
Described one-way hydraulic pump is driven by motor by coupling; Oil absorption filter is installed in fuel tank, and described oil absorption filter is connected with one-way hydraulic pump, and between fuel tank and one-way hydraulic pump, stop valve is installed.
2. hydrostatic transmission detection platform load system according to claim 1, is characterized in that: electricity-liquid guide proportion relief valve is installed between the oil outlet of described load pump feed circuit and fuel tank.
3. hydrostatic transmission detection platform load system according to claim 2, it is characterized in that: in described hydrostatic transmission detection platform load system, a pilot operated compound relief valve is installed, the filler opening of described pilot operated compound relief valve is connected to load pump feed circuit and one-way hydraulic and pumps on the oil circuit that hydraulic fluid port is connected, and oil outlet is communicated with fuel tank.
4. hydrostatic transmission detection platform load system according to claim 3, it is characterized in that: a high pressure filter is also installed after the oil outlet of described one-way hydraulic pump, after electricity-liquid guide proportion relief valve oil outlet, before fuel tank, return filter is installed, air filter is installed simultaneously on fuel tank.
5. hydrostatic transmission detection platform load system according to claim 4, is characterized in that: a heater and a temperature transducer are installed in described fuel tank, cooler was installed simultaneously before return filter.
6. hydrostatic transmission detection platform load system according to claim 5, it is characterized in that: described hydrostatic transmission detection platform load system is provided with flow monitoring system before cooler after electricity-liquid guide proportion relief valve oil outlet, described flow monitoring system structure is: flowmeter is in parallel with two-position two-way solenoid valve, and two-position two-way solenoid valve is normally open, and oil outlet is towards fuel tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320870743.5U CN203730422U (en) | 2013-12-27 | 2013-12-27 | load system for detecting platform of hydrostatic drive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320870743.5U CN203730422U (en) | 2013-12-27 | 2013-12-27 | load system for detecting platform of hydrostatic drive device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203730422U true CN203730422U (en) | 2014-07-23 |
Family
ID=51200500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320870743.5U Withdrawn - After Issue CN203730422U (en) | 2013-12-27 | 2013-12-27 | load system for detecting platform of hydrostatic drive device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203730422U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696998A (en) * | 2013-12-27 | 2014-04-02 | 南通爱慕希机械有限公司 | Load system of hydrostatic transmission device detecting platform |
-
2013
- 2013-12-27 CN CN201320870743.5U patent/CN203730422U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696998A (en) * | 2013-12-27 | 2014-04-02 | 南通爱慕希机械有限公司 | Load system of hydrostatic transmission device detecting platform |
| CN103696998B (en) * | 2013-12-27 | 2015-12-02 | 南通爱慕希机械有限公司 | Hydrostatic transmission detection platform load system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140723 Effective date of abandoning: 20151202 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |