CN103867533B - A kind of hydraulic test system of railway tamping unit - Google Patents
A kind of hydraulic test system of railway tamping unit Download PDFInfo
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- CN103867533B CN103867533B CN201410114708.XA CN201410114708A CN103867533B CN 103867533 B CN103867533 B CN 103867533B CN 201410114708 A CN201410114708 A CN 201410114708A CN 103867533 B CN103867533 B CN 103867533B
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Abstract
The present invention discloses a kind of hydraulic test system of railway tamping unit, comprise fuel tank, load motor test loop, make oil hydraulic cylinder test loop firm by ramming, overturn oil hydraulic cylinder test loop, respectively in order to overhaul the load motor group of tamping unit, to make the operation quality of oil hydraulic cylinder, upset oil hydraulic cylinder firm by ramming.Oil in fuel tank can also be cooled by fuel tank cooling circuit.By arranging logical valve, can when the motor of the first oil scavenge pump stop, dead electricity is ended, and load motor group is stopped operating, and prevents motor from continuing rotate and cause suction.By arranging pilot operated compound relief valve, the pressure in corresponding circuit can be limited.By arranging reduction valve, hypotensive effect can be played.The effect of absorbing vibration can be played when commutating by arranging accumulator.
Description
Technical field
The invention belongs to hydraulic power station, be specifically related to a kind of hydraulic test system of railway tamping unit.
Background technique
At present, railway tamping unit is common railway maintenance equipment.It in use often needs its load motor group, makes the parts such as inside and outside oil cylinder, the inside and outside oil cylinder of upset firm by ramming and overhaul, also need service testing, if the problem of finding that there is, also need to pull down and again overhaul after maintenance, very inconvenient.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of hydraulic test system of railway tamping unit, can carry out simulation test, be convenient to the maintenance of each parts of tamping unit.
In order to solve the problems of the technologies described above, the present invention adopts following technological scheme:
A hydraulic test system for railway tamping unit, comprises fuel tank, load motor test loop, and load motor test loop comprises vibration damper, the first oil scavenge pump, logical valve, and vibration damper input end is connected with fuel tank, and output terminal is connected with the first oil scavenge pump; First oil scavenge pump output terminal is connected with the load motor group of tamping unit respectively; Logical valve input end is connected with the output terminal of load motor group respectively, and logical valve output terminal is connected to fuel tank, and logical valve must conduct, and dead electricity is ended;
Described hydraulic test system also comprises makes oil hydraulic cylinder test loop firm by ramming, make oil hydraulic cylinder test loop firm by ramming and comprise the second oil scavenge pump, first, second solenoid directional control valve, reduction valve, the input end of the second oil scavenge pump is connected with fuel tank, output terminal is connected to first respectively, one input end of the second solenoid directional control valve, one output terminal of the first solenoid directional control valve is connected with reduction valve, what the output terminal of reduction valve was connected to tamping unit makes inner casing firm by ramming, the output terminal of making inner casing firm by ramming is connected to another input end of the first solenoid directional control valve, what one output terminal of the second solenoid directional control valve was connected to tamping unit makes outer shell firm by ramming, the output terminal of making outer shell firm by ramming is connected to another input end of the second solenoid directional control valve, another output terminal of first solenoid directional control valve is connected to fuel tank after being connected with another output terminal of the second solenoid directional control valve,
Described hydraulic test system also comprises upset oil hydraulic cylinder test loop, upset oil hydraulic cylinder test loop comprise the 3rd oil scavenge pump, the 3rd, the 4th solenoid directional control valve, the input end of the 3rd oil scavenge pump is connected with fuel tank, and output terminal is connected to an input end of the 3rd, the 4th solenoid directional control valve respectively; The output terminal of the 3rd solenoid directional control valve is connected to the input end of the upset inner casing of tamping unit, and the output terminal of upset inner casing is connected to another input end of the 3rd solenoid directional control valve; One output terminal of the 4th solenoid directional control valve is connected to the input end of the upset outer shell of tamping unit, and the output terminal of upset outer shell is connected to another input end of the 4th solenoid directional control valve; Fuel tank is connected to after another output terminal of 3rd solenoid directional control valve is connected with another output terminal of the 4th solenoid directional control valve.
Described hydraulic test system also comprises fuel tank cooling circuit, and fuel tank cooling circuit comprises the 4th oil scavenge pump, industry oil cold, and the input end of the 4th oil scavenge pump is connected with fuel tank, and output terminal is connected with industry oil cold, and the output terminal of industry oil cold is connected to fuel tank.
The first return filter is connected with between described logical valve and fuel tank; Another output terminal of first, second, third and fourth solenoid directional control valve is all connected, and and between fuel tank, be connected with the second return filter; The 3rd return filter is connected with between the output terminal of industry oil cold and fuel tank.
The first pilot operated compound relief valve is connected with between described first oil suction delivery side of pump and the input end of the first return filter, be connected with the second pilot operated compound relief valve between another output terminal of first, second solenoid directional control valve and the second return filter, between another output terminal of the 3rd, the 4th solenoid directional control valve and the second return filter, be connected with the 3rd pilot operated compound relief valve.
Described make inside and outside cylinder firm by ramming input, output terminal is all connected with diaphragm accumulator.
Described fuel tank is also provided with liquid level relay.
Between the input of described load motor group, output terminal, make firm by ramming between the input of inner casing, output terminal, make firm by ramming between the input of outer shell, output terminal, make the input of inner casing, output terminal firm by ramming respectively and between the input end of the second return filter, make the input of outer shell, output terminal firm by ramming and be equipped with direct-acting overflow valve respectively and between the input end of the second return filter.
Adopt technique scheme, the hydraulic test system of this railway tamping unit comprises fuel tank, load motor test loop, makes oil hydraulic cylinder test loop firm by ramming, overturns oil hydraulic cylinder test loop, respectively in order to test the load motor group of tamping unit, to make the operation quality of oil hydraulic cylinder, upset oil hydraulic cylinder firm by ramming.Oil in fuel tank can also be cooled by fuel tank cooling circuit.By arranging logical valve, can when the motor of the first oil scavenge pump stop, dead electricity is ended, and load motor group is stopped operating, and prevents motor from continuing rotate and cause suction.By arranging pilot operated compound relief valve, the pressure in corresponding circuit can be limited.By arranging reduction valve, hypotensive effect can be played.The effect of absorbing vibration can be played when commutating by arranging accumulator.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail:
Fig. 1 is the schematic diagram of the hydraulic test system of railway tamping unit of the present invention.
Embodiment
The hydraulic test system of railway tamping unit of the present invention as shown in Figure 1, it comprises fuel tank 1 and load motor test loop, this load motor test loop mainly comprises vibration damper 11, first oil scavenge pump 12, logical valve 13, vibration damper 11 input end is connected with fuel tank 1, and output terminal is connected with the first oil scavenge pump 12; First oil scavenge pump 12 can adopt crescent gear pump, and adopts the secondary variable-frequency motor of 37kw to drive, and the output terminal of the first oil scavenge pump 12 is connected with the load motor group 2 of tamping unit respectively by tubular type one-way valve; Logical valve 13 input end is connected with the output terminal of load motor group 2 respectively, and logical valve 13 output terminal is connected to fuel tank 1 by the first return filter, and logical valve 13 must conduct, and dead electricity is ended.When secondary variable-frequency motor runs, oil in fuel tank 1 is picked up by the first oil scavenge pump 12 and input load groups of motors 2, the runnability of load motor group 2 can be checked, thus the quality of trouble hunt ing, now logical valve 13 obtains electric, and oil gets back to fuel tank 1 by the first return filter 14; When secondary variable-frequency motor is out of service, load motor group 2 is by oil effect, also can continue to run, if do not stop immediately, can suction be caused, therefore, when secondary variable-frequency motor is out of service, logical valve 13 obtains electric cut-off, no longer includes oil by load motor group 2, load motor group 2 can be made to stop, preventing the generation of suction.
Described hydraulic test system also comprises makes oil hydraulic cylinder test loop firm by ramming, make oil hydraulic cylinder test loop firm by ramming and mainly comprise the second oil scavenge pump 21, first, second solenoid directional control valve 22, 23, reduction valve 24, second oil scavenge pump 21 can adopt vane pump, and adopt the AC motor of 11kw to drive, the input end of the second oil scavenge pump 21 is connected with fuel tank 1, the output terminal of the second oil scavenge pump 21 is connected to first respectively by tubular type one-way valve, second solenoid directional control valve 22, the one input end a of 23, one output terminal b of the first solenoid directional control valve 22 is connected with reduction valve 24, what the output terminal of reduction valve 24 was connected to corresponding tamping unit respectively makes inner casing 3 (in Fig. 1 being two groups) firm by ramming, the output terminal of making inner casing 3 firm by ramming is connected to another input end c of the first solenoid directional control valve 22 respectively, one output terminal b of the second solenoid directional control valve 23 is connected to tamping unit respectively and makes outer shell 4 (in figure being three groups) accordingly firm by ramming, the output terminal of making outer shell 4 firm by ramming is connected to another input end c of the second solenoid directional control valve 23 respectively, fuel tank 1 is connected to by continuous two the second return filters 25 after another output terminal d of the first solenoid directional control valve 22 is connected with another output terminal d of the second solenoid directional control valve 23.Make inside and outside cylinder test principle firm by ramming identical, to test making inner casing 3 firm by ramming, second oil scavenge pump 21 is under the driving of AC motor, oil is picked up to the first solenoid directional control valve 22, when a and b, c and the d conducting of the first solenoid directional control valve 22, the piston rod of making inner casing 3 firm by ramming carries out extend action by oil effect, when a and c, b and the d conducting of a solenoid directional control valve, the piston rod of making inner casing 3 firm by ramming carries out reverse retract action, thus realize testing the action situation of making inner casing 3 firm by ramming, with trouble hunt ing quality.Above-mentioned reduction valve 24 has been effects of step-down, if be greater than set pressure by oil pressure, then, after reduction valve 24, pressure reduces to set pressure, if be less than set pressure by oil pressure, is then actual value.Described make inside and outside cylinder 3,4 firm by ramming input, output terminal is also all connected with diaphragm accumulator 26, when commutating, in order to play the effect of absorbing vibration.
Described hydraulic test system also comprises upset oil hydraulic cylinder test loop, upset oil hydraulic cylinder test loop mainly comprise the 3rd oil scavenge pump 31, the 3rd, the 4th solenoid directional control valve 32,33,3rd oil scavenge pump 31 also adopts vane pump, and adopt the AC motor of 15kw to drive, the input end of the 3rd oil scavenge pump 31 is connected with fuel tank 1, and output terminal is connected to an input end a of the 3rd, the 4th solenoid directional control valve 32,33 respectively; The output terminal b of the 3rd solenoid directional control valve 32 is connected to the input end of the upset inner casing 5 of tamping unit respectively, and the output terminal of upset inner casing 5 is connected to another input end c of the 3rd solenoid directional control valve 32; One output terminal b of the 4th solenoid directional control valve 33 is connected to the input end of the upset outer shell 6 of tamping unit, and the output terminal of upset outer shell 6 is connected to another input end c of the 4th solenoid directional control valve 33; Another output terminal d of the 3rd solenoid directional control valve 32 is also connected to fuel tank 1 by the second return filter 25 after being connected with another output terminal d of the 4th solenoid directional control valve 33.The principle of this upset oil hydraulic cylinder test loop with to make oil hydraulic cylinder test loop firm by ramming similar, in order to test the action situation of the inside and outside cylinder 5,6 of upset, with trouble hunt ing quality.
Described hydraulic test system also comprises fuel tank cooling circuit, fuel tank cooling circuit comprises the 4th oil scavenge pump 41, industry oil cold 42,4th oil scavenge pump 41 also adopts vane pump and adopts the AC motor of 3kw to drive, the input end of the 4th oil scavenge pump 41 is connected with fuel tank 1, output terminal is connected with industry oil cold 42, and the output terminal of industry oil cold 42 is connected to fuel tank 1 by the 3rd return filter 43.By the 4th oil scavenge pump 41 oil of fuel tank 1 picked up and cooled by industry oil cold 42, thus fuel tank 1 is lowered the temperature.
The first pilot operated compound relief valve 15 is connected with between the output terminal and the input end of the first return filter 14 of described first oil scavenge pump 12, be connected with between another output terminal of first, second solenoid directional control valve 22,23 and the second return filter 25 between another output terminal of second pilot operated compound relief valve the 27, three, the 4th solenoid directional control valve 32,33 and the second return filter 25 and be connected with the 3rd pilot operated compound relief valve 34.Can be limited and regulable control the pressure in each loop by above-mentioned pilot operated compound relief valve 15,27,34.
Between the input, output terminal of described load motor group 2, make firm by ramming between the input of inner casing 3, output terminal, make firm by ramming between the input of outer shell 4, output terminal, make the input of inner casing 3, output terminal firm by ramming respectively and between the input end of the second return filter 25, make the input of outer shell 4, output terminal firm by ramming and be equipped with direct-acting overflow valve 7 respectively and between the input end of the second return filter 25.By above-mentioned direct-acting overflow valve 7, each loop is played a protective role.
In addition, described fuel tank 1 is also provided with liquid level relay 8, is used for controlling the liquid level of fuel tank 1.
In sum, the hydraulic test system of railway tamping unit of the present invention is adopted to have following advantage:
1, can simulate fiddle with device load motor group 2, fiddle with the handling situations of outer shell in interior outer shell, upset, thus can trouble hunt ing quality;
2, can also the oil in fuel tank 1 be cooled by fuel tank 1 cooling circuit;
3, by arranging logical valve 13, can when the motor of the first oil scavenge pump 12 stop, dead electricity is ended, and load motor group 2 is stopped operating, and prevents motor from continuing rotate and cause suction;
4, by arranging pilot operated compound relief valve 15,27,34, the pressure in corresponding circuit can be limited;
5, by arranging reduction valve 24, hypotensive effect can be played;
6, the effect of absorbing vibration can be played when commutating by arranging accumulator 26.
But; those skilled in the art will recognize that; above-mentioned embodiment is exemplary; to better enable those skilled in the art understand this patent; can not be interpreted as it is restriction to this patent protection domain; as long as according to this patent disclose any equivalent change done or the modification of spirit, all fall into the scope of this patent protection.
Claims (5)
1. the hydraulic test system of a railway tamping unit, it is characterized in that: comprise fuel tank, load motor test loop, load motor test loop comprises vibration damper, the first oil scavenge pump, logical valve, and vibration damper input end is connected with fuel tank, and output terminal is connected with the first oil scavenge pump; First oil scavenge pump output terminal is connected with the load motor group of tamping unit respectively; Logical valve input end is connected with the output terminal of load motor group respectively, and logical valve output terminal is connected to fuel tank, and logical valve must conduct, and dead electricity is ended;
Described hydraulic test system also comprises makes oil hydraulic cylinder test loop firm by ramming, make oil hydraulic cylinder test loop firm by ramming and comprise the second oil scavenge pump, first, second solenoid directional control valve, reduction valve, the input end of the second oil scavenge pump is connected with fuel tank, output terminal is connected to first respectively, one input end of the second solenoid directional control valve, one output terminal of the first solenoid directional control valve is connected with reduction valve, what the output terminal of reduction valve was connected to tamping unit makes inner casing firm by ramming, the output terminal of making inner casing firm by ramming is connected to another input end of the first solenoid directional control valve, what one output terminal of the second solenoid directional control valve was connected to tamping unit makes outer shell firm by ramming, the output terminal of making outer shell firm by ramming is connected to another input end of the second solenoid directional control valve, another output terminal of first solenoid directional control valve is connected to fuel tank after being connected with another output terminal of the second solenoid directional control valve,
Described hydraulic test system also comprises upset oil hydraulic cylinder test loop, upset oil hydraulic cylinder test loop comprise the 3rd oil scavenge pump, the 3rd, the 4th solenoid directional control valve, the input end of the 3rd oil scavenge pump is connected with fuel tank, and output terminal is connected to an input end of the 3rd, the 4th solenoid directional control valve respectively; The output terminal of the 3rd solenoid directional control valve is connected to the input end of the upset inner casing of tamping unit, and the output terminal of upset inner casing is connected to another input end of the 3rd solenoid directional control valve; One output terminal of the 4th solenoid directional control valve is connected to the input end of the upset outer shell of tamping unit, and the output terminal of upset outer shell is connected to another input end of the 4th solenoid directional control valve; Fuel tank is connected to after another output terminal of 3rd solenoid directional control valve is connected with another output terminal of the 4th solenoid directional control valve;
Described hydraulic test system also comprises fuel tank cooling circuit, and fuel tank cooling circuit comprises the 4th oil scavenge pump, industry oil cold, and the input end of the 4th oil scavenge pump is connected with fuel tank, and output terminal is connected with industry oil cold, and the output terminal of industry oil cold is connected to fuel tank;
The first return filter is connected with between described logical valve and fuel tank; Another output terminal of first, second, third and fourth solenoid directional control valve is all connected, and and between fuel tank, be connected with the second return filter; The 3rd return filter is connected with between the output terminal of industry oil cold and fuel tank.
2. the hydraulic test system of railway tamping unit according to claim 1, it is characterized in that: between described first oil suction delivery side of pump and the input end of the first return filter, be connected with the first pilot operated compound relief valve, be connected with the second pilot operated compound relief valve between another output terminal of first, second solenoid directional control valve and the second return filter, between another output terminal of the 3rd, the 4th solenoid directional control valve and the second return filter, be connected with the 3rd pilot operated compound relief valve.
3. the hydraulic test system of railway tamping unit according to claim 1, is characterized in that:
Described make inside and outside cylinder firm by ramming input, output terminal is all connected with diaphragm accumulator.
4. the hydraulic test system of railway tamping unit according to claim 1, is characterized in that:
Described fuel tank is also provided with liquid level relay.
5. the hydraulic test system of railway tamping unit according to claim 1, is characterized in that:
Between the input of described load motor group, output terminal, make firm by ramming between the input of inner casing, output terminal, make firm by ramming between the input of outer shell, output terminal, make the input of inner casing, output terminal firm by ramming respectively and between the input end of the second return filter, make the input of outer shell, output terminal firm by ramming and be equipped with direct-acting overflow valve respectively and between the input end of the second return filter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410114708.XA CN103867533B (en) | 2014-03-26 | 2014-03-26 | A kind of hydraulic test system of railway tamping unit |
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| CN201410114708.XA CN103867533B (en) | 2014-03-26 | 2014-03-26 | A kind of hydraulic test system of railway tamping unit |
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| CN103867533A CN103867533A (en) | 2014-06-18 |
| CN103867533B true CN103867533B (en) | 2016-04-27 |
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| CN104454788B (en) * | 2014-10-29 | 2016-10-12 | 北京机械设备研究所 | A kind of test platform for energy conversion unit |
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