CN102465939A - Lifting system fault judgment device and system as well as fault judgment method - Google Patents
Lifting system fault judgment device and system as well as fault judgment method Download PDFInfo
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- CN102465939A CN102465939A CN2010105364881A CN201010536488A CN102465939A CN 102465939 A CN102465939 A CN 102465939A CN 2010105364881 A CN2010105364881 A CN 2010105364881A CN 201010536488 A CN201010536488 A CN 201010536488A CN 102465939 A CN102465939 A CN 102465939A
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- switch valve
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Abstract
The invention discloses a lifting system fault judgment device and system as well as a fault judgment method. The device comprises a first switch valve, a first pressure meter, a second switch valve and a second pressure meter, wherein the first end of the first switch valve is connected to an oil outlet of a first hydraulic element, the second end of the first switch valve is used for being connected to an oil inlet of the second hydraulic element, the opening threshold value of the first switch valve is set into the first threshold value, the first pressure meter is connected into an oil path between the first switch valve and the first hydraulic element through a three-way joint, the first end of the second switch valve is used for being connected to the oil outlet of the second hydraulic element, the second end of the second switch valve is used for being connected to an oil inlet of a third hydraulic element, the opening threshold of the second switch value is set into the second threshold value, the first threshold value and the second threshold value are equal to or greater than the work oil pressure value in a lifting system, and the second pressure meter is connected into an oil path arranged between the second switch valve and the second hydraulic element through a three-way joint. The device can effectively realize the judgment on the fault element of the lifting system, and the cost is reduced.
Description
Technical field
The present invention relates to the fault detection technique of engineering truck lifting equipment, relate in particular to a kind of hoisting system failure judgment device and system and fault judgment method.
Background technique
Along with the development of national economy, the quantity of various dumping engineering trucks is more and more, has hoisting system in the dumping engineering truck more, and hoisting system is generally realized power transmission by hydraulic pressure.
The hoisting system of existing hydraulics generally includes the hydraulic parts on bases such as gear pump, 3-position-3-way valve and hydraulic jack.But the maintenance problem of existing hydraulic lifting system becomes increasingly conspicuous.The fault judgement of dumping car hoisting system is not easy to investigate thoroughly the fault part very much, can only be by changing hydraulic parts, and whether proper functioning judges whether the hydraulic parts of this replacing is the fault part to detect whole hoisting system subsequently, promptly changes the mode of investigation one by one.But the defective of operation is very obvious like this, and changing hydraulic parts needs earlier the hydraulic oil in the hoisting system is given out light, and changes a hydraulic parts and adds hydraulic oil one time, just changes another hydraulic parts, repetitive operation if fail proper functioning.Non-fault hydraulic parts under changing is often no longer gained as the fault part.Aforesaid operations all can cause the lot of manpower and material resources waste.
Summary of the invention
The present invention provides a kind of hoisting system failure judgment device and system and fault judgment method, to realize effective judgement to hoisting system fault part, reduces cost.
The present invention provides a kind of hoisting system failure judgment device, wherein, comprising:
First switch valve, its first end is used to be connected to the oil outlet of first hydraulic parts, and second end is used to be connected to the filler opening of second hydraulic parts, and the unlatching threshold value of this first switch valve is set at first threshold value;
First pressure gauge is connected in the oil circuit between first switch valve and first hydraulic parts through tee union;
The second switch valve, its first end is used to be connected to the oil outlet of second hydraulic parts, and second end is used to be connected to the filler opening of the 3rd hydraulic parts, and the unlatching threshold value of this second switch valve is set at second threshold value.
Second pressure gauge is connected in the oil circuit between the second switch valve and second hydraulic parts through tee union.
The present invention also provides a kind of hoisting system fault judgement system, comprises gear pump, 3-position-3-way valve and hydraulic jack, wherein, also comprises failure judgment device, and said failure judgment device comprises:
First switch valve, first end of said first switch valve is used to be connected to the oil outlet of gear pump, and second end of said first switch valve is used to be connected to the filler opening of 3-position-3-way valve, and the unlatching threshold value of said first switch valve is set at first threshold value;
First pressure gauge is connected in the oil circuit between said first switch valve and the said gear pump through tee union;
The second switch valve; First end of said second switch valve is used to be connected to the oil outlet of said 3-position-3-way valve; Second end of said second switch valve is used to be connected to the filler opening of hydraulic jack; The unlatching threshold value of said second switch valve is set at second threshold value, and said first threshold value and second threshold value are equal to or greater than the operating oil pressure value of said gear pump;
Second pressure gauge is connected in the oil circuit between said second switch valve and the said 3-position-3-way valve through tee union.
The present invention also provides a kind of hoisting system fault judgement system of the present invention performed fault judgment method, wherein, comprising:
When this hoisting system breaks down, close first switch valve, the starter receiver pump is with operating oil pressure value output hydraulic oil;
Gather first manometric first force value, when judging this first force value, confirm the gear pump fault less than the operating oil pressure value;
When definite gear pump does not break down, open first switch valve, close the second switch valve, and keep gear pump with operating oil pressure value output hydraulic oil;
Gather second manometric second force value, when judging this second force value, confirm 3-position-3-way valve fault less than the operating oil pressure value;
When definite 3-position-3-way valve does not break down, confirm the hydraulic jack fault.
Hoisting system failure judgment device provided by the invention can accurately be judged the device that breaks down, and has improved the maintenance efficiency of container hoisting system, has reached the purpose of practicing thrift cost.
Description of drawings
The hoisting system failure judgment device principle schematic that Fig. 1 provides for the embodiment of the invention one.
The hoisting system fault judgement system principle schematic representation that Fig. 2 provides for the embodiment of the invention two.
The hoisting system fault judgment method flow chart that Fig. 3 provides for the embodiment of the invention three.
Reference character:
1-first hydraulic parts; The 2-transit joint; 3-first pressure gauge;
4-first switch valve; 5-second hydraulic parts; The 6-tee union;
7-the 3rd hydraulic parts; 8-second switch valve; 9-second pressure gauge;
The 10-gear pump; 11-3-position-3-way valve; The 12-hydraulic jack.
Embodiment
For the purpose, technological scheme and the advantage that make the embodiment of the invention clearer; To combine the accompanying drawing in the embodiment of the invention below; Technological scheme in the embodiment of the invention is carried out clear, intactly description; Obviously, described embodiment is the present invention's part embodiment, rather than whole embodiments.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment who is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Embodiment one
The hoisting system failure judgment device principle schematic that Fig. 1 provides for the embodiment of the invention one.The failure judgment device of present embodiment comprises first switch valve 4, first pressure gauge 3, second switch valve 8 and second pressure gauge 9.Wherein, first end of first switch valve 4 is used to be connected to the oil outlet of first hydraulic parts 1, and second end of first switch valve 4 is used to be connected to the filler opening of second hydraulic parts 5, and the unlatching threshold value of this first switch valve 4 is set at first threshold value.The unlatching threshold value of so-called switch valve, switch valve was in cut-off state when promptly the oil pressure in the switch valve was lower than this threshold value, and switch valve is on state when being higher than this threshold value.First pressure gauge 3 is to be connected in the oil circuit between first switch valve 4 and first hydraulic parts 1 through tee union 6.
First end of second switch valve 8 is used to be connected to the oil outlet of second hydraulic parts 5; Second end of second switch valve 8 is used to be connected to the filler opening of the 3rd hydraulic parts 7; The unlatching threshold value of this second switch valve 8 is set at second threshold value, and above-mentioned first threshold value and second threshold value are equal to or greater than operating oil pressure value in the hoisting system.Second pressure gauge 9 is to be connected in the oil circuit between the second switch valve 8 and second hydraulic parts 5 through tee union 6.
The performed fault judgement operation of the failure judgment device of present embodiment can be specific as follows:
When hoisting system breaks down, failure judgment device is connected among the hoisting system, and relation is connected between first hydraulic parts 1, second hydraulic parts 5 and the 3rd hydraulic parts 7 as described above; Then close first switch valve 4, start the pressure output hydraulic oil of first hydraulic parts 1 with the operating oil pressure value, this first threshold value is equal to or greater than the operating oil pressure value; Gather first force value of first pressure gauge 3, when judging first force value, can confirm that first hydraulic parts 1 breaks down less than the operating oil pressure value.If because first hydraulic parts, 1 proper functioning; The pressure of the hydraulic oil that it is exported should be able to reach the operating oil pressure value; So the pressure between first hydraulic parts 1 and first switch valve 4 should equal the operating oil pressure value; Have only when first hydraulic parts, 1 fault, its pressure of exporting can't reach the operating oil pressure value.First threshold value preferably is set equals the operating oil pressure value, then can whether come failure judgement through comparing first force value less than first threshold value.When definite first hydraulic parts 1 does not break down, open first switch valve 4, close second switch valve 8, and keep first hydraulic parts 1 with operating oil pressure value output hydraulic oil; Gather second force value of second pressure gauge 9, when judging second force value, can confirm that second hydraulic parts 5 breaks down, confirm that the principle of fault and first hydraulic parts 1 are similar less than the operating oil pressure value.Preferably set second threshold value and equal the operating oil pressure value, then can whether come failure judgement through comparing second force value less than second threshold value.If when confirming that second hydraulic parts 5 does not break down, then can confirm the 3rd hydraulic parts 7 faults based on elimination process.
In the above-described embodiments, be that example describes with typical hoisting system structure, then first hydraulic parts 1 is a gear pump, and second hydraulic parts 5 is the 3-position-3-way valve, and the 3rd hydraulic parts 7 is a hydraulic jack.First switch valve 4 is two position two-way valve with second switch valve 8.Wherein, first switch valve 4 is to be connected through transit joint 2 with second switch valve 8 with gear pump, 3-position-3-way valve and the preferred Placement of hydraulic jack, but is not limited to this kind Placement.Simultaneously, to the hoisting system in the present embodiment, first switch valve 4 and first threshold value of second switch valve 8 and the operating oil pressure value that second threshold value is equal to or greater than gear pump.
The technological scheme of present embodiment can be effectively to the judgement of hoisting system fault part, accurately directly.Present embodiment can be connected into hoisting system with failure judgment device, need not to dismantle the hydraulic parts of hoisting system, also need not repeatedly to charge into hydraulic oil, also need not to dismantle unnecessary non-fault hydraulic parts, can use manpower and material resources sparingly.
Embodiment two
The hoisting system fault judgement system principle schematic representation that Fig. 2 provides for the embodiment of the invention two.The fault judgement system of present embodiment comprises gear pump 10,3-position-3-way valve 11 and hydraulic jack 12, wherein, also comprises failure judgment device.This failure judgment device comprises first switch valve 4, first pressure gauge 3, second switch valve 8 and second pressure gauge 9.Wherein, first end of first switch valve 4 is used to be connected to the oil outlet of gear pump 10, and second end of first switch valve 4 is used to be connected to the filler opening of 3-position-3-way valve 11, and the unlatching threshold value of this first switch valve 4 is set at first threshold value.First pressure gauge 3 is to be connected in the oil circuit between first switch valve 4 and the gear pump 10 through tee union 6.
First end of second switch valve 8 is used to be connected to the oil outlet of 3-position-3-way valve 11; Second end of second switch valve 8 is used to be connected to the filler opening of hydraulic jack 12; The unlatching threshold value of this second switch valve 8 is set at second threshold value, and above-mentioned first threshold value and second threshold value are equal to or greater than operating oil pressure value in the hoisting system.Second pressure gauge 9 is to be connected in the oil circuit between second switch valve 8 and the 3-position-3-way valve 11 through tee union 6.
In the present embodiment, first switch valve 4 can be two position two-way valve with second switch valve 8.Wherein, first switch valve 4 is to be connected through transit joint 2 with second switch valve 8 with gear pump 10,3-position-3-way valve 11 and hydraulic jack 12 preferred Placements, but is not limited to this kind Placement.
The performed fault judgement operation of the failure judgment device of present embodiment can be specific as follows:
When hoisting system breaks down, close first switch valve 4, starter receiver pump 10 is with operating oil pressure value output hydraulic oil; Gather first force value of first pressure gauge 3, when judging first force value, can confirm that gear pump 10 breaks down less than the operating oil pressure value.When definite gear pump 10 does not break down, open first switch valve 4, close second switch valve 8, and keep gear pump 10 with operating oil pressure value output hydraulic oil; Gather second force value of second pressure gauge 9, when judging second force value, can confirm that 3-position-3-way valve 11 breaks down less than the operating oil pressure value.When definite 3-position-3-way valve 11 does not break down, confirm hydraulic jack 12 faults.
The technological scheme of present embodiment can accurate and effective be judged the device that breaks down, and has improved the maintenance efficiency of container hoisting system, has reached the purpose of practicing thrift cost.Technological scheme of the present invention is particularly useful for the fault judgement of dumping engineering truck container hoisting system.In the practical application, along with the increase of hydraulic parts quantity, also can corresponding increase switch valve and manometric quantity, the unlatching threshold value of switch valve can be calibrated on test stand in advance, makes its operating oil pressure value that equals hoisting system, with relatively convenient.
In the embodiment of the invention, preferably be connected each device with tee union through transit joint, for example, transit joint can be connected with the joint of hydraulic parts or the mouth of pipe of oil circuit through screw thread, can realize dismantling easily, also is easy to change hydraulic parts.
Embodiment three
The hoisting system fault judgment method flow chart that Fig. 3 provides for the embodiment of the invention three.The method of present embodiment can be carried out by hoisting system fault judgement provided by the present invention system, and its structure can be with reference to Fig. 2.The fault judgment method step that present embodiment provides is following:
The technological scheme of present embodiment can accurately be got rid of the device that breaks down, and has improved the maintenance efficiency and the accuracy of container hoisting system, has reached the purpose of practicing thrift cost.
What should explain at last is: above embodiment is only in order to explaining technological scheme of the present invention, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technological scheme that aforementioned each embodiment put down in writing, and perhaps part technical characteristics wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of the essence disengaging various embodiments of the present invention technological scheme of relevant art scheme.
Claims (10)
1. a hoisting system failure judgment device is characterized in that, comprising:
First switch valve (4); First end of said first switch valve (4) is used to be connected to the oil outlet of first hydraulic parts (1); Second end of said first switch valve (4) is used to be connected to the filler opening of second hydraulic parts (5), and the unlatching threshold value of said first switch valve (4) is set at first threshold value;
First pressure gauge (3) is connected in the oil circuit between said first switch valve (4) and said first hydraulic parts (1) through tee union (6);
Second switch valve (8); First end of said second switch valve (8) is used to be connected to the oil outlet of said second hydraulic parts (5); Second end of said second switch valve (8) is used to be connected to the filler opening of the 3rd hydraulic parts (7); The unlatching threshold value of said second switch valve (8) is set at second threshold value, and said first threshold value and second threshold value are equal to or greater than operating oil pressure value in the hoisting system;
Second pressure gauge (9) is connected in the oil circuit between said second switch valve (8) and said second hydraulic parts (5) through tee union (6).
2. hoisting system failure judgment device according to claim 1 is characterized in that: said first hydraulic parts (1) is a gear pump (10), and said second hydraulic parts (5) is 3-position-3-way valve (11), and said the 3rd hydraulic parts (7) is hydraulic jack (12).
3. hoisting system failure judgment device according to claim 2 is characterized in that: said first threshold value and second threshold value are equal to or greater than the operating oil pressure value of said gear pump (10).
4. according to claim 1 or 2 or 3 described hoisting system failure judgment devices, it is characterized in that: said first switch valve (4) and second switch valve (8) are two position two-way valve.
5. according to claim 1 or 2 or 3 described hoisting system failure judgment devices, it is characterized in that: said first switch valve (4) all links to each other with first hydraulic parts (1), second hydraulic parts (5) and the 3rd hydraulic parts (7) respectively through transit joint (2) with second switch valve (8).
6. a hoisting system fault judgement system comprises gear pump (10), 3-position-3-way valve (11) and hydraulic jack (12), it is characterized in that also comprise failure judgment device, said failure judgment device comprises:
First switch valve (4); First end of said first switch valve (4) is used to be connected to the oil outlet of gear pump (10); Second end of said first switch valve (4) is used to be connected to the filler opening of 3-position-3-way valve (11), and the unlatching threshold value of said first switch valve (4) is set at first threshold value;
First pressure gauge (3) is connected in the oil circuit between said first switch valve (4) and the said gear pump (10) through tee union (6);
Second switch valve (8); First end of said second switch valve (8) is used to be connected to the oil outlet of said 3-position-3-way valve (11); Second end of said second switch valve (8) is used to be connected to the filler opening of hydraulic jack (12); The unlatching threshold value of said second switch valve (8) is set at second threshold value, and said first threshold value and second threshold value are equal to or greater than the operating oil pressure value of said gear pump (10);
Second pressure gauge (9) is connected in the oil circuit between said second switch valve (8) and the said 3-position-3-way valve (11) through tee union (6).
7. hoisting system fault judgement according to claim 6 system, it is characterized in that: said first switch valve (4) and second switch valve (8) are two position two-way valve.
8. according to claim 6 or 7 described hoisting system fault judgement systems, it is characterized in that: said first switch valve (4) all links to each other with gear pump (10), 3-position-3-way valve (11) and hydraulic jack (12) respectively through transit joint (2) with second switch valve (8).
9. the performed fault judgment method of the arbitrary described hoisting system fault judgement system of claim 6～8 is characterized in that, comprising:
When said hoisting system fault, close first switch valve (4), start said gear pump (10) with said operating oil pressure value output hydraulic oil;
Gather first force value of said first pressure gauge (3), when judging said first force value, confirm said gear pump (10) fault less than said operating oil pressure value;
When definite said gear pump (10) when not breaking down, open said first switch valve (4), close said second switch valve (8), and keep said gear pump (10) with said operating oil pressure value output hydraulic oil;
Gather second force value of said second pressure gauge (9), when judging said second force value, confirm said 3-position-3-way valve (11) fault less than said operating oil pressure value;
When definite said 3-position-3-way valve (11) when not breaking down, confirm said hydraulic jack (12) fault.
10. fault judgment method according to claim 9 is characterized in that: first threshold value and second threshold value are 20MPa.
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| CN2010105364881A CN102465939A (en) | 2010-11-04 | 2010-11-04 | Lifting system fault judgment device and system as well as fault judgment method |
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| CN2010105364881A CN102465939A (en) | 2010-11-04 | 2010-11-04 | Lifting system fault judgment device and system as well as fault judgment method |
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| CN102852780A (en) * | 2012-09-18 | 2013-01-02 | 北京二七轨道交通装备有限责任公司 | Method and device for detecting hydraulic drive pump |
| CN104748975A (en) * | 2015-03-20 | 2015-07-01 | 句容五星机械制造有限公司 | Method for detecting fault of tilting cart carriage failing to stopping at any position in holding |
| CN104786901A (en) * | 2015-04-14 | 2015-07-22 | 句容五星机械制造有限公司 | Method for detecting fault that dump truck gear pump operates while compartment is not lifted |
| CN104832496A (en) * | 2015-03-19 | 2015-08-12 | 句容五星机械制造有限公司 | Skip car carriage not-lifting fault detection method |
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Application publication date: 20120523 |