CN108953249A - Gear fatigue experiment hydraulic loading system - Google Patents
Gear fatigue experiment hydraulic loading system Download PDFInfo
- Publication number
- CN108953249A CN108953249A CN201810874956.2A CN201810874956A CN108953249A CN 108953249 A CN108953249 A CN 108953249A CN 201810874956 A CN201810874956 A CN 201810874956A CN 108953249 A CN108953249 A CN 108953249A
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- CN
- China
- Prior art keywords
- oil
- gear
- filter
- hydraulic
- valve
- 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.)
- Pending
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Classifications
-
- 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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/021—Gearings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
Abstract
The invention belongs to the technical fields such as the fatigue test of gear, and in particular to a kind of gear fatigue experiment hydraulic loading system.The gear fatigue experiment hydraulic loading system includes fuel tank, hydraulic pump, first filter, the second filter, overflow valve, pressure reducing valve, electrohydraulic servo valve, hydraulic cylinder, displacement sensor, gear-box, tested gear mounting shaft, load gear, load gear mounting shaft, the load arm of force.Gear fatigue experiment hydraulic loading system provided by the invention, by the way that hydraulic loading system is arranged, by the motor driven of sufficiently large power hydraulic pump powerful enough, expanding-contracting action is carried out with driving hydraulic cylinder, hydraulic cylinder can apply sufficiently large load to the load arm of force；Valve opening by adjusting electrohydraulic servo valve can accurately control the pressure into the hydraulic oil in hydraulic cylinder, so that hydraulic cylinder provides accurate loaded load, thus the accuracy of guarantee test.
Description
Technical field
The invention belongs to the technical fields such as the fatigue test of gear, and in particular to a kind of gear fatigue experiment hydraulic loaded system
System.
Background technique
In design of gears, especially for relatively high gear is required in terms of reliability, according to reliability theory pair
The result for the assessment that safety coefficient carries out can not almost reflect the reliability level of gear.It is thus typically necessary to gear
Fatigue test is carried out, it is especially true to examine the reliability and durability of gear.
In existing gear fatigue experiment, the load applied to gear is too small, and required load standard is often not achieved, from
And make the result inaccuracy of experiment.
Therefore, how sufficiently large load is applied to guarantee the accurate of experimental result to gear, becomes those skilled in the art
Member's technical problem urgently to be resolved.
Summary of the invention
The present invention is directed at least solve the technical problems existing in the prior art, it is hydraulic to propose a kind of gear fatigue experiment
Loading system can improve the above-mentioned problems of the prior art.
A kind of gear fatigue experiment hydraulic loading system is provided to achieve the purpose of the present invention, including fuel tank, hydraulic pump,
First filter, overflow valve, pressure reducing valve, electrohydraulic servo valve, hydraulic cylinder, displacement sensor, gear-box, is tested the second filter
Gear mounting shaft, load gear, load gear mounting shaft, the load arm of force；The tested gear mounting shaft, load gear peace
Axis is filled to be arranged side by side, and the both ends at the both ends of the tested gear mounting shaft, the load gear mounting shaft be supported in it is described
Gear-box；The load arm of force edge is installed on the load gear mounting shaft perpendicular to the load gear mounting shaft extending direction
One end；The fuel tank has been respectively communicated with oil outlet pipe and oil return line, and the hydraulic pump is by motor drive, the hydraulic pump
In the oil outlet pipe, the oil inlet of the hydraulic pump is connected to the fuel tank, described in the oil outlet connection of the hydraulic pump
The oil inlet of electrohydraulic servo valve, the oil outlet of the electrohydraulic servo valve distinguishes the rod chamber and rodless cavity of the hydraulic cylinder, described
The oil outlet of hydraulic cylinder is connected to the oil return opening of the electrohydraulic servo valve, and the oil outlet of the electrohydraulic servo valve is connected to the oil return pipe
Road；The first filter, the second filter, the pressure reducing valve are successively set on the hydraulic pump and are connected to the electrohydraulic servo valve
Oil outlet pipe on, oil outlet pipe between the first filter, the second filter is equipped with the overflow valve, the overflow
The oil inlet of valve is connected to oil outlet pipe, and the oil outlet of the overflow valve is connected to oil return line；The power output end of the hydraulic cylinder
Act on the load arm of force.
Preferably, the oil outlet pipe of the hydraulic pump oil outlet is equipped with check valve, and the oil outlet of the hydraulic pump connects
Lead to the oil inlet of the check valve.
Preferably, the oil outlet pipe between the first filter, the second filter is equipped with cut-off valve group, accumulator,
The oil inlet of the cut-off valve group is connected to the oil outlet pipe, and the oil outlet of the cut-off valve group is connected to the accumulator.
Preferably, first oil filter is the oil filter with by-passing valve.
Preferably, second oil filter is high-pressure filter.
Preferably, the oil return line is equipped with water cooler, and the water cooler is used for hydraulic in oil return line
Oil is cooled down.
Preferably, the oil return line is equipped with third oil filter, and the oil outlet of the third oil filter is connected to fuel tank.
Preferably, the oil filter is the oil filter with by-passing valve.
The invention has the following advantages:
Gear fatigue experiment hydraulic loading system provided by the invention, by the way that hydraulic loading system is arranged, by sufficiently large
The motor driven of power hydraulic pump powerful enough carries out expanding-contracting action with driving hydraulic cylinder, and hydraulic cylinder can be to loading force
Arm applies sufficiently large load；Valve opening by adjusting electrohydraulic servo valve can be accurately controlled into hydraulic in hydraulic cylinder
The pressure of oil, so that hydraulic cylinder provides accurate loaded load, thus the accuracy of guarantee test.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the gear fatigue experiment hydraulic loading system that embodiment of the present invention provides；
Fig. 2 is the structural schematic diagram of tested gear installation provided in an embodiment of the present invention；
Description of symbols:
Hydraulic pump 1, first filter 2, the second filter 3, overflow valve 4, pressure reducing valve 5, electrohydraulic servo valve 6, hydraulic cylinder 7,
Displacement sensor 8, cut-off valve group 9, accumulator 10, water cooler 11, third filter 12, pressure gauge 13, tested gear 20, tooth
Roller box 30, the load arm of force 40, load gear 50.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not construed as limiting the claims.
It please refers to shown in Fig. 1, Fig. 2, Fig. 1 is the gear fatigue experiment hydraulic loading system that embodiment of the present invention provides
Structural schematic diagram, Fig. 2 are the structural schematic diagram of tested gear installation provided in an embodiment of the present invention.
As shown in Figure 1 and Figure 2, gear fatigue experiment hydraulic loading system provided by the invention, including fuel tank, hydraulic pump 1,
First filter 2, the second filter 3, overflow valve 4, pressure reducing valve 5, electrohydraulic servo valve 6, hydraulic cylinder 7, displacement sensor, gear
Case, tested 20 installation axle of gear, load gear 50, load 50 installation axle of gear, the load arm of force 40.
20 installation axle of tested gear, 50 installation axle of load gear are disposed side by side in gear-box 30, and described
The both ends of tested 20 installation axle of gear, the both ends for loading 50 installation axle of gear are supported in the gear-box 30；It is described to add
The arm of force 40 is carried along the one end for being installed on load 50 installation axle of gear perpendicular to the load 50 installation axle extending direction of gear.
The fuel tank has been respectively communicated with oil outlet pipe and oil return line, and the hydraulic pump 1 is described hydraulic by motor drive
Pump 1 is set in the oil outlet pipe, and the oil inlet of the hydraulic pump 1 is connected to the fuel tank, the oil outlet connection of the hydraulic pump 1
The oil inlet of the electrohydraulic servo valve 6, the oil outlet of the electrohydraulic servo valve 6 distinguish the rod chamber of the hydraulic cylinder 7 and without bars
Chamber, the oil outlet of the hydraulic cylinder 7 are connected to the oil return opening of the electrohydraulic servo valve 6, the oil outlet connection of the electrohydraulic servo valve 6
The oil return line.
The first filter 2, the second filter 3, the pressure reducing valve 5 be successively set on the hydraulic pump 1 be connected to it is described
In the oil outlet pipe of electrohydraulic servo valve 6, the oil outlet pipe between the first filter 2, the second filter 3 is equipped with described overflow
Valve 4 is flowed, the oil inlet of the overflow valve 4 is connected to oil outlet pipe, and the oil outlet of the overflow valve 4 is connected to oil return line, overflow valve 4
Pressure excessively high in oil outlet pipe can be drained into oil return line, and then flow back to fuel tank；The power output of the hydraulic cylinder 7
End acts on the load arm of force 40.
In preferred scheme, it is equipped with pressure gauge 13, on the pipeline that overflow valve 4 is connected to oil outlet pipe to detect flowline
The pressure on road.
In preferred scheme, displacement sensor 8 is equipped on the hydraulic stem of hydraulic cylinder 7, for detecting the effect of hydraulic cylinder 7
Stroke.
Gear fatigue experiment hydraulic loading system provided by the invention, by the way that hydraulic loading system is arranged, by sufficiently large
The motor driven of power hydraulic pump 1 powerful enough carries out expanding-contracting action with driving hydraulic cylinder 7, and hydraulic cylinder 7 can be to load
The arm of force 40 applies sufficiently large load；Valve opening by adjusting electrohydraulic servo valve 6 can be accurately controlled into hydraulic cylinder 7
Hydraulic oil pressure so that hydraulic cylinder 7 provides accurate loaded load, thus the accuracy of guarantee test.
In preferred scheme, the oil outlet pipe of 1 oil outlet of hydraulic pump is equipped with check valve, the hydraulic pump 1
Oil outlet is connected to the oil inlet of the check valve, and check valve can prevent the hydraulic oil in oil outlet pipe from backflow phenomenon occur.
In preferred scheme, the oil outlet pipe between the first filter 2, the second filter 3 is equipped with cut-off valve group
9, accumulator 10, the oil inlet of the cut-off valve group 9 are connected to the oil outlet pipe, and the oil outlet of the cut-off valve group 9 is connected to institute
State accumulator 10.The setting cut-off valve group 9, accumulator 10 in oil outlet pipe, when hydraulic pump 1 starts, excessive pressure can be with
Part enters in accumulator 10, and instantaneous pressure is to electrohydraulic servo valve 6, oil outlet pipe and hydraulic when can prevent hydraulic pump 1 from starting
The hydraulic parts such as cylinder 7 cause impacting with high pressure, so as to extend the service life of each hydraulic part.
In preferred scheme, first oil filter is the oil filter with by-passing valve.In order to prevent because of the first oil filter
It blocks and hydraulic pump 1 is overloaded or causes filter core broken, in the oil strain channel parallel connection by-passing valve of the first oil filter, or with the
One oil filter parallel connection clogging indicator, if blocking, can with and alarm.
In preferred scheme, second oil filter is high-pressure filter.Because oil outlet pipe pressure is larger, the second oil strain
Device can resist high pressure.
In preferred scheme, the oil return line is equipped with water cooler 11, and the water cooler 11 is used for oil return pipe
Hydraulic oil in road is cooled down, and hydraulic cylinder 7 can generate a large amount of heat in mechanism, so that the temperature liter of hydraulic oil
Height, in order to avoid the temperature for entering hydraulic oil in fuel tank is too high, the water cooler 11 that is arranged on oil return line can be to returning
Hydraulic oil in oil pipe line is cooled down.
In preferred scheme, the oil return line is equipped with third filter 12, the oil outlet of the third filter 12
It is connected to fuel tank.Third filter 12 has biggish through-current capability, the pressure loss small, can be filled into miscellaneous in oil return line
Matter, to prevent impurity from entering fuel tank.
In preferred scheme, the third filter 12 is the oil filter with by-passing valve.In order to prevent because third filters
Device 12 blocks and makes oil return line oil pressure excessive or cause filter core broken, bypasses in the oil strain channel parallel connection of third filter 12
Valve, or with the clogging indicator in parallel of third filter 12, if blocking, can with and alarm.
Structure, feature and effect of the invention, the above institute are described in detail based on the embodiments shown in the drawings
Only presently preferred embodiments of the present invention is stated, but the present invention does not limit the scope of implementation as shown in the drawings, it is all according to structure of the invention
Think made change or equivalent example modified to equivalent change, when not going beyond the spirit of the description and the drawings,
It should all be within the scope of the present invention.
Claims (8)
1. a kind of gear fatigue experiment hydraulic loading system, which is characterized in that including fuel tank, hydraulic pump, first filter, second
Filter, overflow valve, pressure reducing valve, electrohydraulic servo valve, hydraulic cylinder, displacement sensor, gear-box, tested gear mounting shaft, load
Gear, load gear mounting shaft, the load arm of force；The tested gear mounting shaft, the load gear mounting shaft are arranged side by side, and
The both ends of the tested gear mounting shaft, the both ends for loading gear mounting shaft are supported in the gear-box；The load
The arm of force is along the one end for being installed on the load gear mounting shaft perpendicular to the load gear mounting shaft extending direction；The fuel tank
It is respectively communicated with oil outlet pipe and oil return line, the hydraulic pump is set to the flowline by motor drive, the hydraulic pump
On the road, the oil inlet of the hydraulic pump is connected to the fuel tank, the oil outlet of the hydraulic pump be connected to the electrohydraulic servo valve into
Hydraulic fluid port, the oil outlet of the electrohydraulic servo valve distinguish the rod chamber and rodless cavity of the hydraulic cylinder, the oil outlet of the hydraulic cylinder
It is connected to the oil return opening of the electrohydraulic servo valve, the oil outlet of the electrohydraulic servo valve is connected to the oil return line；First mistake
Filter, the second filter, the pressure reducing valve are successively set on the hydraulic pump and are connected in the oil outlet pipe of the electrohydraulic servo valve,
Oil outlet pipe between the first filter, the second filter is equipped with the overflow valve, and the oil inlet of the overflow valve connects
The oil outlet of pass-out oil pipe line, the overflow valve is connected to oil return line；The power output end of the hydraulic cylinder acts on described add
Carry the arm of force.
2. gear fatigue experiment hydraulic loading system according to claim 1, which is characterized in that the hydraulic pump oil outlet
The oil outlet pipe at place is equipped with check valve, and the oil outlet of the hydraulic pump is connected to the oil inlet of the check valve.
3. gear fatigue experiment hydraulic loading system according to claim 1, which is characterized in that first oil filter is
Oil filter with by-passing valve.
4. gear fatigue experiment hydraulic loading system according to claim 1, which is characterized in that second oil filter is
High-pressure filter.
5. gear fatigue experiment hydraulic loading system according to claim 1, which is characterized in that set on the oil return line
There is water cooler, the water cooler is for cooling down the hydraulic oil in oil return line.
6. gear fatigue experiment hydraulic loading system according to claim 1, which is characterized in that set on the oil return line
There is third oil filter, the oil outlet of the third oil filter is connected to fuel tank.
7. gear fatigue experiment hydraulic loading system according to claim 6, which is characterized in that the oil filter be with
The oil filter of by-passing valve.
8. gear fatigue experiment hydraulic loading system according to claim 7, which is characterized in that the oil filter be with
The oil filter of by-passing valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810874956.2A CN108953249A (en) | 2018-08-02 | 2018-08-02 | Gear fatigue experiment hydraulic loading system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810874956.2A CN108953249A (en) | 2018-08-02 | 2018-08-02 | Gear fatigue experiment hydraulic loading system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108953249A true CN108953249A (en) | 2018-12-07 |
Family
ID=64468651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810874956.2A Pending CN108953249A (en) | 2018-08-02 | 2018-08-02 | Gear fatigue experiment hydraulic loading system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108953249A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006045211A1 (en) * | 2006-09-25 | 2008-04-03 | Robert Bosch Gmbh | Hydrostatic transmission |
| CN102435490A (en) * | 2011-09-29 | 2012-05-02 | 中国航天科技集团公司第四研究院四○一所 | Combined loading system for static strength tests of solid motors |
| CN202229980U (en) * | 2011-09-28 | 2012-05-23 | 北京索普液压机电有限公司 | Hydraulic pressurizing system of testing machine |
| CN205136165U (en) * | 2015-11-05 | 2016-04-06 | 长城重型机械制造有限公司 | Hydraulic pressure loading system |
| CN106351887A (en) * | 2016-10-09 | 2017-01-25 | 江苏万达丰重工机械有限公司 | Hydraulic driving device |
| CN206234174U (en) * | 2016-10-09 | 2017-06-09 | 江苏万达丰重工机械有限公司 | A kind of fluid pressure drive device |
| CN106959211A (en) * | 2017-03-15 | 2017-07-18 | 清华大学 | The fatigue test device and its method of testing of a kind of gear engagement |
-
2018
- 2018-08-02 CN CN201810874956.2A patent/CN108953249A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006045211A1 (en) * | 2006-09-25 | 2008-04-03 | Robert Bosch Gmbh | Hydrostatic transmission |
| CN202229980U (en) * | 2011-09-28 | 2012-05-23 | 北京索普液压机电有限公司 | Hydraulic pressurizing system of testing machine |
| CN102435490A (en) * | 2011-09-29 | 2012-05-02 | 中国航天科技集团公司第四研究院四○一所 | Combined loading system for static strength tests of solid motors |
| CN205136165U (en) * | 2015-11-05 | 2016-04-06 | 长城重型机械制造有限公司 | Hydraulic pressure loading system |
| CN106351887A (en) * | 2016-10-09 | 2017-01-25 | 江苏万达丰重工机械有限公司 | Hydraulic driving device |
| CN206234174U (en) * | 2016-10-09 | 2017-06-09 | 江苏万达丰重工机械有限公司 | A kind of fluid pressure drive device |
| CN106959211A (en) * | 2017-03-15 | 2017-07-18 | 清华大学 | The fatigue test device and its method of testing of a kind of gear engagement |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181207 |