CN203570755U - Testing device of starting performance of hydraulic motor - Google Patents
Testing device of starting performance of hydraulic motor Download PDFInfo
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- CN203570755U CN203570755U CN201320620432.3U CN201320620432U CN203570755U CN 203570755 U CN203570755 U CN 203570755U CN 201320620432 U CN201320620432 U CN 201320620432U CN 203570755 U CN203570755 U CN 203570755U
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Abstract
The utility model discloses a testing device of the starting performance of a hydraulic motor. The testing device comprises a swing hydraulic cylinder, a hydraulic system and an installation platform. A testing jig, a first transmission support, a second transmission support and a limiting support are arranged on the installation platform, wherein a torque speed sensor is arranged on the testing jig; the first transmission support and the second transmission support are located on the two sides of the testing jig respectively and are both connected with a transmission shaft of the torque speed sensor through couplers; the first transmission support is connected with an output shaft of the hydraulic motor to be tested; the second transmission support is connected with an output shaft of the swing hydraulic cylinder. The swing hydraulic cylinder is a gear-rack swing hydraulic cylinder, wherein a piston rod extends out of the swing hydraulic cylinder, a lengthening component with an adjustable length is connected to the extending end, on one side of the swing hydraulic cylinder, of the piston rod, and a limit stop is arranged in front of the extending end of the lengthening component and is fixedly connected to the limiting support. The hydraulic system is provided with two oil pressure adjusting devices. The testing device of the starting performance of the hydraulic motor is simple in system structure, convenient to operate, low in manufacturing cost, and capable of being popularized and used.
Description
Technical field
The utility model relates to a kind of testing apparatus of motor starting performance, particularly the testing apparatus of oil hydraulic motor starting performance.
Background technique
At present, oil hydraulic motor is hydraulic energy to be converted to the element of mechanical energy, and startability refers to the starting capability of motor under ordinance load, is key property of oil hydraulic motor.
The test of oil hydraulic motor startability is to measure to drag under load condition in oil hydraulic motor perseverance, fully setting up from state of rest to the frictional behavior of motor internal friction pair, and when output shaft produces micro-corner, oil hydraulic motor institute output torque, inlet outlet pressure differential and phase angle.
The permanent torque test of conventional oil hydraulic motor startability has loading beam, electric dynamometer and three kinds of permanent moment of torsion load modes of oil hydraulic pump.Wherein, it is the deceleration loading device consisting of balancing weight, spring bearing and lever etc. that loading beam loads, and by lever principle, to tested motor, provides torque load.When the method is tested out of phase angle moment of torsion, need weights loading, unloading and loading beam leveling, efficiency is low; When direct current dynamometer loads as the load of oil hydraulic motor, can be used as DC generator operation, because speed adjustable range is large, easy to adjust, stable, energy such as can reclaim at the advantage, be widely used, but this system must have speeder could meet test requirements document, and system complex, invest very large.In addition deceleration loading device itself is just with very large rotary inertia, and being difficult to realize real quiet moment of torsion is main startability load test; And oil hydraulic pump loading is the load using bidirectional hydraulic pump as tested motor, different loaded value is by regulating the pressure of electromagnetic proportion relief valve (or throttle valve) to realize.This system architecture is simple, easy to adjust, but the key of this system is under lower-speed state by the minimum regime flow of valve and bidirectional hydraulic pump displacement pulsation impact, thus while being used for measuring the starting torque of oil hydraulic motor, need to increase speeder, and effect or not ideal.Above-mentioned conventional oil hydraulic motor startability is tested permanent torque deceleration loading device used, and it exists complex structure, complex operation problem.
Summary of the invention
The utility model provides a kind of testing apparatus of simple in structure, easy to operate oil hydraulic motor starting performance for solving the technical problem existing in known technology.
The technological scheme that the utility model is taked for the technical problem existing in solution known technology is: a kind of testing apparatus of oil hydraulic motor starting performance, comprise oscillating motor, hydraulic system and mountion plate, described mountion plate is provided with testing jig, the first transmission bracket, the second transmission bracket and limiting bracket, wherein, described testing jig is provided with torque speed sensor, described the first transmission bracket and described the second transmission bracket lay respectively at the both sides of described testing jig, all by coupling, are connected with the transmission shaft of described torque speed sensor, described the first transmission bracket is connected with the output shaft of tested oil hydraulic motor, described the second transmission bracket is connected with the output shaft of described oscillating motor, described oscillating motor is the overhanging gear-and-rack swing hydraulic cylinder that goes out piston rod type, the piston rod external part end of one side is connected with length-adjustable extending part, external part the place ahead at described extending part is provided with positive stop, described positive stop is fixed on described limiting bracket, described hydraulic system is provided with two hydraulic adjustment devices, described two hydraulic adjustment devices are connected with described oscillating motor with tested oil hydraulic motor respectively.
The utility model can also adopt following technological scheme:
Described extending part is bolt, and described bolt is threaded with described piston rod end.
Described hydraulic system comprises the first oil hydraulic circuit that drives tested oil hydraulic motor and the second oil hydraulic circuit that drives described oscillating motor, and described the first oil hydraulic circuit and described the second oil hydraulic circuit are separate.
Described the first oil hydraulic circuit comprises controls the first selector valve that drives tested oil hydraulic motor clockwise and anticlockwise, and the hydraulic adjustment device of described the first oil hydraulic circuit comprises the first proportional pressure control valve.
Described the second oil hydraulic circuit comprises controls the second selector valve that drives described oscillating motor clockwise and anticlockwise, and the hydraulic adjustment device of described the second oil hydraulic circuit comprises the second proportional pressure control valve.
Advantage and the good effect that the utlity model has are: adopt oscillating motor as static torque load, can be test reliable and stable static torque load is provided; Swing cylinder is designed to the overhanging piston rod form that goes out, to use piston rod mechanical position limitation while loading, can accurately adjust the position, starting phase angle of tested oil hydraulic motor according to the position of piston rod simultaneously; Oscillating motor can rotate within the scope of 0-360 °, can complete fast like this adjustment at tested oil hydraulic motor test phase angle; The variation in angular displacement of oil hydraulic motor in loading starting process detects in torque speed sensor, during test, according to the output umber of pulse of torque speed sensor, control the starting of oil hydraulic motor, and stop in next measured phase angle position, automatically realize tested oil hydraulic motor phase angle and accurately grade; The test process of oil hydraulic motor startability is completed automatically by computer, can guarantee the accuracy of survey data; The output signal of computer acquisition moment of torsion rotational speed meters, by moving corresponding computer software, the automatic adjusting of control loop pressure, realized the automatic test of oil hydraulic motor startability, the utility model system architecture is simple, easy to operate, cheap, can promote the use of.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the plan view of Fig. 1;
Fig. 3 is hydraulic work system schematic diagram of the present utility model;
Fig. 4 is test job flow chart of the present utility model.
In figure: 1, tested oil hydraulic motor; 2, the first transmission bracket; 3, the first coupling; 4, testing jig; 5, the second coupling; 6, the second transmission bracket; 7, oscillating motor; 8, limiting bracket; 9, extending part; 10, mountion plate; 11, tested oil hydraulic motor inlet pressure sensor; 12, tested oil hydraulic motor outlet pressure sensor; 13, the first selector valve; 14, the second selector valve; 15, the first proportional pressure control valve; 16, the second proportional pressure control valve; 17, the first oil hydraulic circuit oil pump; 18, the second oil hydraulic circuit oil pump; 19, the inlet pressure sensor of oscillating motor; 20, torque speed sensor.
Embodiment
For further understanding model utility content of the present utility model, Characteristic, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1～Fig. 4, a kind of testing apparatus of oil hydraulic motor starting performance, comprise oscillating motor 7, hydraulic system and mountion plate 10, described mountion plate is provided with testing jig 4, the first transmission bracket 2, the second transmission bracket 6 and limiting bracket 8, wherein, described testing jig 4 is provided with torque speed sensor 20, described the first transmission bracket 2 and described the second transmission bracket 6 lay respectively at the both sides of described testing jig 4, all by coupling, are connected with the transmission shaft of described torque speed sensor 20, described the first transmission bracket is connected with the output shaft of tested oil hydraulic motor 1, described the second transmission bracket is connected with the output shaft of described oscillating motor 7, as shown in Figure 1, described the first transmission bracket 2 can be provided with output shaft, and its output shaft is connected with the transmission shaft of described torque speed sensor 20 by the first coupling 3, described the second transmission bracket 6 can be provided with output shaft, and its output shaft is connected with the transmission shaft of described torque speed sensor 20 by the second coupling 5, described the first transmission bracket 2 also can be provided with output shaft and the corresponding affixed input shaft of mounting flange and the mounting flange with tested oil hydraulic motor 1, described the second transmission bracket 6 also can be provided with output shaft and the corresponding affixed input shaft of mounting flange and the mounting flange with described oscillating motor 7, input shaft and the output shaft of described the first transmission bracket 2, described the second transmission bracket 6 can be structure as a whole, described oscillating motor 7 is the overhanging gear-and-rack swing hydraulic cylinder that goes out piston rod type, the piston rod external part end of one side is connected with length-adjustable extending part 9, external part the place ahead at described extending part 9 is provided with positive stop, described positive stop is fixed on described limiting bracket 8, by adjusting the extrusion of described extending part 9, make to contact with the positive stop of described limiting bracket 8, thereby the overhanging extrusion that goes out piston rod to described oscillating motor 7 is carried out mechanical position limitation, described hydraulic system is provided with two hydraulic adjustment devices, described two hydraulic adjustment devices are connected with described oscillating motor with tested oil hydraulic motor respectively, hydraulic adjustment device can adoption rate relief valve or electro-hydraulic pressure regulation valve.
Described extending part 9 can be bolt, described bolt is threaded with described piston rod end, by adjusting the extrusion of bolt screw-in depth adjusting bolt, described extending part 9 can also adopt other location expansion devices, the tooth-like expansion device of locating as being with etc.
Described hydraulic system can comprise the first oil hydraulic circuit that drives tested oil hydraulic motor and the second oil hydraulic circuit that drives described oscillating motor, and described the first oil hydraulic circuit and described the second oil hydraulic circuit are separate.Wherein the first oil hydraulic circuit is by the first oil hydraulic circuit oil pump 17 fuel feeding, and the second oil hydraulic circuit is by the second oil hydraulic circuit oil pump 18 fuel feeding.
Described the first oil hydraulic circuit can comprise controls the first selector valve 13 that drives tested oil hydraulic motor clockwise and anticlockwise, and the hydraulic adjustment device of described the first oil hydraulic circuit comprises the first proportional pressure control valve 15.
Described the second oil hydraulic circuit can comprise controls the second selector valve 14 that drives described oscillating motor clockwise and anticlockwise, and the hydraulic adjustment device of described the second oil hydraulic circuit comprises the second proportional pressure control valve 16.
The embodiment of corresponding above-mentioned a kind of oil hydraulic motor starting ability test device, the utility model also provides a kind of test method embodiment of oil hydraulic motor starting performance, it adopts oscillating motor 7 as static torque load, and described oscillating motor is the overhanging gear-and-rack swing hydraulic cylinder that goes out piston rod type; By two hydraulic adjustment devices, control respectively the output torque of described oscillating motor and tested oil hydraulic motor, hydraulic adjustment device can adoption rate relief valve or electro-hydraulic pressure regulation valve, and tested oil hydraulic motor is quantitatively applied to load; The end of stretching out piston rod of described oscillating motor 7 one sides is provided with the adjustable extending part of extrusion 9, the extrusion of described extending part 9 is limited by described limiting bracket 8, by adjusting the extrusion of described extending part 9, make to contact with the block of described limiting bracket 8, thereby the overhanging extrusion that goes out piston rod to described oscillating motor 7 is carried out mechanical position limitation, thereby by extending part, limit the overhanging extrusion that goes out piston rod of described oscillating motor 7, accurately adjust the position, starting phase angle of tested oil hydraulic motor; Angular displacement and the output torque of the output shaft of the tested oil hydraulic motor of employing torque speed sensor 20 detection in loading starting process; Signal by computer acquisition from described torque speed sensor 20, and output signal is controlled running and the output torque of described oscillating motor and 7 tested oil hydraulic motors 1.
Further, can by torque speed sensor, detect the output shaft variation in angular displacement amount of tested oil hydraulic motor 1, according to variation in angular displacement amount, control the start and stop of tested oil hydraulic motor 1, automatically realize the tested oil hydraulic motor 1 accurate decile in output shaft phase angle.
The test method of above-mentioned oil hydraulic motor starting performance, specifically comprises following testing procedure:
1) set oscillating motor 7 initial positions: oscillating motor 7 overhanging gone out to piston rod and adjust to full extended position, the angle of swing that is tested oil hydraulic motor 1 test starting phase angle α 1 corresponding oscillating motor 7 is 360 °, adjusts and limit the extrusion of extending part 9; The end of stretching out piston rod of described oscillating motor 7 one sides is provided with the adjustable extending part of extrusion 9, the extrusion of described extending part 9 is limited by described limiting bracket 8, by adjusting the extrusion of described extending part 9, make to contact with the block of described limiting bracket 8, thereby the overhanging extrusion that goes out piston rod to described oscillating motor 7 is carried out mechanical position limitation, thereby by extending part, control the overhanging extrusion that goes out piston rod of described oscillating motor 7, accurately adjust the position, starting phase angle of tested oil hydraulic motor 1;
2) the quantitative output loading of oscillating motor loads: the output shaft rotation direction of described oscillating motor 7 is for counterclockwise, adjust the hydraulic adjustment device of corresponding described oscillating motor 7, the working pressure of described oscillating motor 7 is quantitatively raised, thereby make the output torque of described oscillating motor 7 reach setting value; According to the nominal torque T of tested oil hydraulic motor 1, can be by quantitatively raising step by step the control electric current of the first proportional pressure control valve 16, thereby adjust step by step the working pressure P1 of oscillating motor 7, the working pressure P1 that makes oscillating motor 7 is T/226+1.4, wherein 1.4 is back pressure value; The inlet pressure sensor 19 of oscillating motor detects and shows the working pressure P1 of oscillating motor 7.
3) at current test phase angle, tested oil hydraulic motor is carried out to bringing onto load testing property: make the output shaft rotation direction of tested oil hydraulic motor 1 for counterclockwise, adjust the hydraulic adjustment device of corresponding tested oil hydraulic motor, the working pressure of tested oil hydraulic motor is quantitatively raised, until detecting the output shaft generation corner of tested oil hydraulic motor 1, torque speed sensor 20 changes, gather now the inlet pressure of tested oil hydraulic motor 1, the momentary value of the pressure of oil outlet and output torque completes the testing property at current phase angle; Wherein, tested oil hydraulic motor inlet pressure sensor 11 detects the inlet pressure of tested oil hydraulic motor, tested oil hydraulic motor outlet pressure sensor 12 detects the oil outlet pressure of tested oil hydraulic motor, and torque speed sensor 20 detects output torque and the rotating photo parallactic angle of tested oil hydraulic motor; Can be by quantitatively raising step by step the control electric current of the second proportional pressure control valve 15, thereby adjust step by step the working pressure of tested oil hydraulic motor 1, until corner occurs tested oil hydraulic motor 1, change, record is the pressure of tested oil hydraulic motor oil inlet and outlet and the momentary value of moment of torsion now, and now tested oil hydraulic motor finishes in the startability test at current phase angle;
4) next test phase angle adjustment location: the hydraulic adjustment device that continues the corresponding tested oil hydraulic motor 1 of quantitative adjusting, make tested oil hydraulic motor 1 low speed rotation, when torque speed sensor 20 sends umber of pulse and corresponds to the sixth of adjacent two test phase angular difference values, stop driving tested oil hydraulic motor 1 and oscillating motor 7, the overhanging extrusion that goes out piston rod of adjusting that described extending part makes described oscillating motor 7 is corresponding with the position at next test phase angle;
5) repeating step 2) to step 4), until complete tested oil hydraulic motor 1 in the test at all test phase angle.
Further, in described step 4), stopping driving after tested oil hydraulic motor and oscillating motor, also comprising by measuring the step of the tested oil hydraulic motor 1 phase angle positional accuracy of piston rod extrusion verification of described oscillating motor 7; Swing cylinder piston rod extrusion is L=50+2 * α mm, wherein L is piston rod extrusion, α is tested oil hydraulic motor corresponding phase angle, measure the piston rod extrusion of described oscillating motor 7, can obtain tested oil hydraulic motor corresponding phase angle α value, thus the positional accuracy at the tested oil hydraulic motor corresponding phase of effect angle, then, the bolt of adjusting the piston rod end installation of described oscillating motor 7 makes it contact with limiting bracket, to piston rod mechanical position limitation.
Further, in step 2) in, it is each 0.1MPa of rise that the working pressure of described oscillating motor quantitatively goes up tone pitch; In step 3) the working pressure of tested oil hydraulic motor quantitatively on tone pitch be each rise 0.1MPa.
Control technological process shown in Fig. 4 is as follows:
1, by the testing software of computer, select test event, set test parameter;
2, control the second selector valve and make the sense of rotation of oscillating motor for counterclockwise, adjust the electric current of the second proportional pressure control valve, increase step by step the working pressure P1 of oscillating motor, increase 0.1Mpa at every turn; Until P1 is while reaching setting value;
3, when P1 reaches setting value, control the first selector valve and make the sense of rotation of tested oil hydraulic motor for counterclockwise, adjust the electric current of the first proportional pressure control valve, increase step by step the working pressure P2 of tested oil hydraulic motor, increase 0.1Mpa at every turn; Gather pressure, output torque (moment of torsion) and the rotational angular velocity signal of the oil inlet and outlet of tested oil hydraulic motor, until rotational angular velocity signal reaches setting value
4,, when rotational angular velocity signal reaches setting value, carry out next group phase angle measurement
5, all phase angles are completed, and generate test report.
Claims (5)
1. the testing apparatus of an oil hydraulic motor starting performance, it is characterized in that, comprise oscillating motor, hydraulic system and mountion plate, described mountion plate is provided with testing jig, the first transmission bracket, the second transmission bracket and limiting bracket, wherein, described testing jig is provided with torque speed sensor, described the first transmission bracket and described the second transmission bracket lay respectively at the both sides of described testing jig, all by coupling, are connected with the transmission shaft of described torque speed sensor, described the first transmission bracket is connected with the output shaft of tested oil hydraulic motor, described the second transmission bracket is connected with the output shaft of described oscillating motor, described oscillating motor is the overhanging gear-and-rack swing hydraulic cylinder that goes out piston rod type, the piston rod external part end of one side is connected with length-adjustable extending part, external part the place ahead at described extending part is provided with positive stop, described positive stop is fixed on described limiting bracket, described hydraulic system is provided with two hydraulic adjustment devices, described two hydraulic adjustment devices are connected with described oscillating motor with tested oil hydraulic motor respectively.
2. the testing apparatus of oil hydraulic motor starting performance according to claim 1, is characterized in that, described extending part is bolt, and described bolt is threaded with described piston rod end.
3. the testing apparatus of oil hydraulic motor starting performance according to claim 1, it is characterized in that, described hydraulic system comprises the first oil hydraulic circuit that drives tested oil hydraulic motor and the second oil hydraulic circuit that drives described oscillating motor, and described the first oil hydraulic circuit and described the second oil hydraulic circuit are separate.
4. the testing apparatus of oil hydraulic motor starting performance according to claim 3, it is characterized in that, described the first oil hydraulic circuit comprises controls the first selector valve that drives tested oil hydraulic motor clockwise and anticlockwise, and the hydraulic adjustment device of described the first oil hydraulic circuit comprises the first proportional pressure control valve.
5. the testing apparatus of oil hydraulic motor starting performance according to claim 3, it is characterized in that, described the second oil hydraulic circuit comprises controls the second selector valve that drives described oscillating motor clockwise and anticlockwise, and the hydraulic adjustment device of described the second oil hydraulic circuit comprises the second proportional pressure control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320620432.3U CN203570755U (en) | 2013-09-30 | 2013-09-30 | Testing device of starting performance of hydraulic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320620432.3U CN203570755U (en) | 2013-09-30 | 2013-09-30 | Testing device of starting performance of hydraulic motor |
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| Publication Number | Publication Date |
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| CN203570755U true CN203570755U (en) | 2014-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320620432.3U Withdrawn - After Issue CN203570755U (en) | 2013-09-30 | 2013-09-30 | Testing device of starting performance of hydraulic motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527563A (en) * | 2013-09-30 | 2014-01-22 | 天津工程机械研究院 | Hydraulic motor starting performance testing device and method |
| CN106481617A (en) * | 2016-12-09 | 2017-03-08 | 西华大学 | A kind of hydraulic motor test platform and method of testing |
-
2013
- 2013-09-30 CN CN201320620432.3U patent/CN203570755U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527563A (en) * | 2013-09-30 | 2014-01-22 | 天津工程机械研究院 | Hydraulic motor starting performance testing device and method |
| CN103527563B (en) * | 2013-09-30 | 2015-11-18 | 天津工程机械研究院 | A kind of testing apparatus of oil hydraulic motor starting performance and test method |
| CN106481617A (en) * | 2016-12-09 | 2017-03-08 | 西华大学 | A kind of hydraulic motor test platform and method of testing |
| CN106481617B (en) * | 2016-12-09 | 2019-01-18 | 西华大学 | A kind of hydraulic motor test platform and test method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140430 Effective date of abandoning: 20151118 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |