CN2218926Y - Rotary table hydraulic power tester - Google Patents
Rotary table hydraulic power tester Download PDFInfo
- Publication number
- CN2218926Y CN2218926Y CN 95202835 CN95202835U CN2218926Y CN 2218926 Y CN2218926 Y CN 2218926Y CN 95202835 CN95202835 CN 95202835 CN 95202835 U CN95202835 U CN 95202835U CN 2218926 Y CN2218926 Y CN 2218926Y
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- CN
- China
- Prior art keywords
- diesel engine
- hydraulic
- oil
- valve group
- test device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a hydraulic testing device used for rotary test table of diesel engine; the device comprises a measure system, a control system, and a heat-removal system; when the utility model works, power source, water source and oil source are not needed to additionally supply; the device mainly receives power input through the hydraulic oil pump, and the pressure is adjusted by the control valve group to supply continuous and adjustable load to the diesel engine; a speed testing device is arranged at the input end of the oil pump, a pressure meter is arranged at the output pipeline of the oil pump to be used as the reference of power testing, and the output pipeline of the control valve group is provided with an oil motor and a fan which disperses heat for the heat dissipator of the device in the circuit to make the hydraulic system keep heat balance.
Description
Domestic and international widely used diesel-engine tester is all based on fixed position at present, the dynamometer that uses mainly is a hydraulic dynamometer, a small amount of electrification dynamometer and eddy current absorption dynamometer are arranged, after diesel engine assembles, transport on the dynamometer stand of testing laboratory load, test, transport again after test is finished and go to spray paint packing.Process of the test will take suitable place like this, time and labour, and expense is big, difficult management.Since the eighties, development abroad a kind of swinging stand, this stand forms the streamline that is connected mutually with assembly line, this stand generally uses hydraulic dynamometer or eddy current absorption dynamometer, these dynamometers are provided by the extraneous medium of the bigger water source of flow as the dynamometer absorbed power that provide, the measurement of load speed wants the external world that power supply is provided, and energising on the revolution stand, water flowing is the comparison difficult technologies, and influences working environment.Present domestic existing subscriber will prepare to use the revolution stand, but water flowing, energising are difficult to solve.The utility model provides a kind of hydraulic test device that is used for the circle test platform, does not need extraneous water, electricity, oil just can finish diesel engine and loads and test.
The purpose of this utility model is to change generally uses fixed testing table when present diesel engine is tested, waste of manpower in the circular flow of test, material resources, take large stretch of place, unmanageable shortcoming, the diesel engine assembling line is connected mutually with the test streamline, form a continuous streamline, thereby save turnaround time, place and human and material resources, the utility model is mainly by following two kinds of characteristics.
1, oil pump is as the load of diesel engine, with operation valve group regulating load size, tensimeter is housed between pump valve, and the rotating speed of oil pump and output pressure and its power absorbed have corresponding relation, just can obtain the oil pump power absorbed easily by measuring rotating speed and pressure.
2, hydraulic oil reduces to by the operation valve group that hydraulic pressure can be converted into heat energy in the process of low pressure oil.Oil motor is equipped with in back in the operation valve group, and hydraulic oil drives oil motor, and oil motor drives fan and rotates the heating radiator of cooling device on oil circuit, and the entrained heat of hydraulic oil is left.
The utility model also is applicable to the loading and the power measurement of other power machines and gearing.Also can be used for fixed stand or be used for portable measurement of power.
Below with reference to the accompanying drawings 1, accompanying drawing 2 comes the utility model is described specifically.
Accompanying drawing 1 is that schematic diagram, accompanying drawing 2 are the structural arrangement sketch.
Diesel engine (1) links fast by shaft coupling (2) and oil pump (4), after diesel engine (1) starting, drive oil pump (4) rotation, diesel engine this moment (1) needs one section unloaded running-in time, therefore operation valve group (6) is opened the off-load switch and is made oil directly enter fuel tank (3), and can measure the no-load speed of diesel engine (1) by speed probe (10) and tachometer gage (11) this moment.
When diesel engine (1) needs to load, the off-load switch of closed control valve group (6), and the loaded switches of continuous adjusting control valve group (6), the output oil of oil pump (4) is boosted, can record the absorbed power of oil pump (4) by tensimeter (5) and tachometer gage (11), it is the output power of diesel engine (1), can make diesel engine (1) be in various dynamic regimes by adjusting control valve group (6), and sustainable maintenance, this moment is by the hydraulic oil of operation valve group (6) oil motor (7) of flowing through, make its rotation and drive fan (8) rotation, thereby heating radiator (9) is dispelled the heat, hydraulic oil is got back to fuel tank (3) and is recycled after dispelling the heat through heating radiator (9), and system is in the thermal equilibrium state that can keep operate as normal.
After diesel engine (1) off-test, the loaded switches of adjusting control valve group (6) is to minimum, and the off-load switch of opening controlling valve group (6) makes diesel engine (1) zero load, allows diesel engine (1) shut down again.
Claims (7)
1, a kind of hydraulic test device that is applicable to diesel engine circle test platform is characterized in that mainly being made up of hydraulic pump, operation valve group, oil motor, heating radiator, fuel tank, forms hydraulic circuit.
2, according to the described hydraulic test device of claim 1, it is characterized in that between hydraulic pump and the operation valve group tensimeter being housed, on the input shaft of oil pump, speed measuring device is housed, measure rotating speed or measure rotating speed at the crankshaft of diesel engine end with hand revolution counter, according to the relation of pressure and moment of torsion, rotating speed, measure the power of diesel engine easily.
3, according to the described hydraulic test device of claim 1, it is characterized in that oil motor drives fan and heating radiator, fuel tank is formed cooling system, distribute the energy that hydraulic load absorbs, energy auto-radiating reach the thermal equilibrium that can keep operate as normal with regard to making this device not need to provide separately water source, power supply, oil sources for this.
4, according to the described hydraulic test device of claim 1, it is characterized in that diesel engine and hydraulic loaded, measurement, cooling system, be installed on the same base plate, base plate is installed on the rotating production line independently, the test edge of table is turned round with streamline, the limit loads test to diesel engine, and this device also can be used for fixed test-bed or Mobile Test Unit.
5,, it is characterized in that adopting when diesel engine connects with oil pump spline housing and three-jaw spring coupling or gear coupling to form fast hitch mechanism according to the described hydraulic test device of claim 1.
6,, it is characterized in that the operation valve group can unload in bypass, makes the oil pump diesel engine be in light condition according to the described hydraulic test device of claim 1.
7,, it is characterized in that being applicable to the loading and the power measurement of other power machines and gearing according to the described hydraulic test device of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95202835 CN2218926Y (en) | 1995-02-10 | 1995-02-10 | Rotary table hydraulic power tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95202835 CN2218926Y (en) | 1995-02-10 | 1995-02-10 | Rotary table hydraulic power tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2218926Y true CN2218926Y (en) | 1996-01-31 |
Family
ID=33855868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95202835 Expired - Lifetime CN2218926Y (en) | 1995-02-10 | 1995-02-10 | Rotary table hydraulic power tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2218926Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108871646A (en) * | 2018-06-28 | 2018-11-23 | 西安航天动力研究所 | A kind of bracket with Bidirectional freedom degree |
-
1995
- 1995-02-10 CN CN 95202835 patent/CN2218926Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108871646A (en) * | 2018-06-28 | 2018-11-23 | 西安航天动力研究所 | A kind of bracket with Bidirectional freedom degree |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |