CN102602285A - Engineering machine and starting method for engine thereof - Google Patents
Engineering machine and starting method for engine thereof Download PDFInfo
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- CN102602285A CN102602285A CN2012100974118A CN201210097411A CN102602285A CN 102602285 A CN102602285 A CN 102602285A CN 2012100974118 A CN2012100974118 A CN 2012100974118A CN 201210097411 A CN201210097411 A CN 201210097411A CN 102602285 A CN102602285 A CN 102602285A
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- driving engine
- oil pump
- engine
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- transfer clutch
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Abstract
The invention provides an engineering machine, which comprises an engine and a load, wherein the engine is used for providing power for the load, and the load comprises an oil pump and a clutch positioned between the engine and the oil pump and used for controlling connection or disconnection of the engine with the oil pump. Correspondingly, the invention further provides a starting method of the engine of the engineering machine. By the aid of the clutch arranged between the load and the engine, load of the engine in starting is reduced, the starting performance of the engine is improved, fuel consumption of the engine is reduced, energy resources are saved, and cost is reduced. Particularly in a high and cold environment, as the ambient temperature is quite low, viscosity and density of hydraulic oil can be obviously increased and are more obviously increased along with temperature decrease. In the working condition, the engine is disconnected with the oil pump through the clutch when started, so that the load of the engine can be effectively reduced, the starting performance of the engine is remarkably improved, and adaptability of the engineering machine in the high and cold environment can be enhanced.
Description
Technical field
The present invention relates to mechanical field, in particular to the startup method of a kind of construction machinery and equipment and driving engine thereof.
Background technology
Along with construction machinery and equipment to the development of development, especially the hoisting crane industry of large-tonnage, high strength operating mode direction to superelevation, super large lifting tonnage direction, it has been trend of the times that construction machinery and equipment adopts hydraulically powered pattern.Hydraulically powered construction machinery and equipment has that structure is simple relatively, impact is little, noise is low, the driving efficiency advantages of higher.
The drive scheme that is adopted at present mainly is two kinds:
I, as shown in Figure 4, is connected to oil pump 92 at driving engine 91, and oil pump 92 is connected to oil cylinder 93 and HM Hydraulic Motor 94;
II, as shown in Figure 5 adopts a plurality of oil pumps 92, and a plurality of oil pumps 92 are connected with driving engine 91 through auxiliary gear box 95.
Scheme II compares scheme I and has used auxiliary gear box 95 more, can parallelly connected a plurality of oil pump 92, and in order to drive the more work element.
But; Because what use that combustion engine basically all uses as the construction machinery and equipment of power is diesel engine; And when diesel engine work ambient temperature is lower than-10 ℃; Will occur starting difficulty, when ambient temperature is lower than-40 ℃, can't start even, one of them aspect is exactly that hydraulic oil, fuel oil and lubricating oil receive due to the low temperature effect.
Particularly; Reduction along with temperature; Oil viscosity and density increase gradually, although construction machinery and equipment does not generally all have exterior load in diesel engine starting, internal load and the friction drag between each kinematic pair that the hydraulic oil in the oil pump causes are still very big.Especially in the low temperature environment below-20 ℃; The reason that a lot of construction machinery and equipments can not start is that institute's bonded assembly oil pump just has bigger rotational resistance torque when zero load; And the performance of storage battery has descended obviously at this moment, is not enough to drive driving engine, auxiliary gear box and oil pump and turns round together.
Summary of the invention
Technical matters to be solved by this invention is, the load that elimination internal load that hydraulic oil causes in the oil pump when engine starting and the friction drag between each kinematic pair bring to driving engine, the startability of raising driving engine.
In view of this; The invention provides a kind of construction machinery and equipment, comprise driving engine and load, said driving engine is that said load provides power; Comprise oil pump in the said load; Also comprise power-transfer clutch, be arranged between said driving engine and the said oil pump, in order to control being connected or disconnection between said driving engine and the said oil pump.
In a kind of technical scheme, described construction machinery and equipment can comprise auxiliary gear box and a plurality of said oil pump, and a plurality of said oil pumps are connected with said driving engine through said auxiliary gear box.
Wherein, said power-transfer clutch can be arranged between said auxiliary gear box and the said driving engine, also can be arranged between said auxiliary gear box and the said oil pump.
Particularly, between one or several oil pump that can be therein and the auxiliary gear box said power-transfer clutch is set, also can between each said oil pump and said auxiliary gear box, said power-transfer clutch be set all.
In addition, said power-transfer clutch is electromagnetic clutch or mechanical clutch.
The present invention also provides a kind of startup method of driving engine; Comprise oil pump in the load of said driving engine, between said driving engine and said oil pump, power-transfer clutch is set, when needs start said driving engine; Break off being connected between said driving engine and the said oil pump through said power-transfer clutch; After starting said driving engine, connect said driving engine and said oil pump through said power-transfer clutch, make the said oil pump work of said engine drive.
Preferably, before connecting said driving engine and said oil pump, also to carry out preheating to said driving engine through said power-transfer clutch.
Preferably, when in said load, comprising a plurality of oil pump, between said a plurality of oil pumps and said driving engine, auxiliary gear box is set, and said power-transfer clutch is arranged between said driving engine and the said auxiliary gear box.
In sum, between load and driving engine, power-transfer clutch is set, has reduced the load of driving engine when starting, improved the startability of driving engine, practiced thrift the consumption of fuel of driving engine, practiced thrift the energy, reduced cost; Especially under psychro-environment, because ambient temperature is very low, hydraulic pressure oil viscosity and density can enlarge markedly; And along with the reduction meeting of temperature all the more obviously; Under this operating mode, break off itself and being connected of oil pump through power-transfer clutch during start the engine, can reduce the load of driving engine effectively; Significantly improve the startability of driving engine, the adaptive capacity of enhancement engineering machinery under psychro-environment.
Description of drawings
Fig. 1 is the schematic diagram according to power-transfer clutch mounting means in the construction machinery and equipment of first embodiment of the invention;
Fig. 2 is the schematic diagram according to power-transfer clutch mounting means in the construction machinery and equipment of second embodiment of the invention;
Fig. 3 is the schematic diagram according to power-transfer clutch mounting means in the construction machinery and equipment of third embodiment of the invention;
Fig. 4 and Fig. 5 are the schematic diagrams of hydraulically powered two kinds of schemes in the prior art.
The specific embodiment
In order more to be expressly understood above-mentioned purpose of the present invention, feature and advantage, the present invention is further described in detail below in conjunction with the accompanying drawing and the specific embodiment.
A lot of details have been set forth in the following description so that make much of the present invention; But; The present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention does not receive the restriction of following disclosed specific embodiment.
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.Need to prove that under the situation of not conflicting, the application's embodiment and the characteristic among the embodiment can make up each other.
Fig. 1 is the schematic diagram according to power-transfer clutch mounting means in the construction machinery and equipment of first embodiment of the invention; Fig. 2 is the schematic diagram according to power-transfer clutch mounting means in the construction machinery and equipment of second embodiment of the invention; Fig. 3 is the schematic diagram according to power-transfer clutch mounting means in the construction machinery and equipment of third embodiment of the invention.
As shown in the figure, construction machinery and equipment provided by the invention comprises driving engine 1 and load, and driving engine 1 provides power for said load, comprises oil pump 2 in the said load, also comprises power-transfer clutch 3, is arranged between driving engine 1 and the oil pump 2.
Need to prove that the power-transfer clutch described in this paper should refer to sensu lato power-transfer clutch, promptly every being used for is connected the output shaft of driving engine and open circuited device with load, all belong to the category of the power-transfer clutch described in this paper.
Before driving engine, itself and oil pump are broken off; It is basic scheme of the present invention; Overcome the technological prejudice in the existing correlation technique effectively, that is, when start the engine, just broken off oil pump and its load in the existing correlation technique; Ignored the load that the oil circuit idle loop brings to driving engine when engine starting fully; Especially hydraulic pressure oil viscosity and density enlarge markedly under low temperature environment, and this moment, the idle loop of oil circuit also can bring very big load to driving engine, had obviously increased the startup difficulty of driving engine.
Wherein, described power-transfer clutch can be an electromagnetic clutch, also can be mechanical clutch.Adopt electromagnetic clutch, control more convenient; And adopting mechanical clutch more reliable, fault rate is lower.
Adopt technical scheme of the present invention, be provided with power-transfer clutch 3 between driving engine 1 and the oil pump 2, when start the engine 1; Can be earlier through power-transfer clutch 3 with breaking off between driving engine 1 and the oil pump 2, after driving engine 1 starts, couple together between through power-transfer clutch 3 again, thereby drive oil pump 2 is worked driving engine and oil pump 2; Reduce the load of driving engine 1 when starting, improved the startability of driving engine 1, practiced thrift the consumption of fuel of driving engine 1; Practice thrift the energy, reduced cost;
Especially under psychro-environment, because ambient temperature is very low, hydraulic pressure oil viscosity and density can enlarge markedly; And along with the reduction meeting of temperature all the more obviously; Under this operating mode, break off itself and being connected of oil pump during start the engine 1, can reduce the load of driving engine 1 effectively; Significantly improve the startability of driving engine 1, the adaptive capacity of enhancement engineering machinery under psychro-environment.
Wherein, shown in figure, the load of oil pump can be HM Hydraulic Motor 5 or oil cylinder 6 etc.
As shown in Figure 1, in a kind of specific embodiment, have only an oil pump 2 in the load of driving engine 1, oil pump 2 is connected to HM Hydraulic Motor 5 and oil cylinder 4, and an end of power-transfer clutch 3 is connected directly to driving engine 1, and the other end is connected directly to oil pump 2.
In another kind of embodiment, construction machinery and equipment provided by the invention can comprise auxiliary gear box and a plurality of said oil pump, and a plurality of said oil pumps are connected with said driving engine through said auxiliary gear box.
In the present embodiment; Also can adopt the technical scheme among the present invention for the construction machinery and equipment that a plurality of oil pumps are arranged; Can power-transfer clutch be provided with between driving engine and the auxiliary gear box, also can power-transfer clutch be arranged between auxiliary gear box and the oil pump, all can realize the object of the invention described in the preceding text.
Particularly; As shown in Figure 2; Said power-transfer clutch 3 can be arranged between said auxiliary gear box 4 and the said driving engine 1, so only needs a power-transfer clutch 3 can break off being connected between all loads of driving engine 1 and this driving engine 1, thus the startability of raising driving engine 1.
Certainly; Also can power-transfer clutch 3 be arranged between auxiliary gear box 4 and the oil pump 2 with mode shown in Figure 3; This moment, power-transfer clutch 3 can break off being connected between driving engine 1 and the oil pump 2; And do not break off being connected between driving engine 1 and the auxiliary gear box 4, and can realize the technique effect described in these preceding text equally, improve the startability of driving engine 1.
Wherein, Between one or more oil pumps 2 that can be therein and the auxiliary gear box 4 power-transfer clutch 3 is set; Also can between each oil pump 2 and auxiliary gear box 4, power-transfer clutch 3 be set all; As long as between at least one oil pump 2 and auxiliary gear box 4, be provided with power-transfer clutch 3, can realize reducing the purpose of driving engine 1 starting load.
The present invention also provides a kind of startup method of driving engine; Comprise oil pump 2 in the load of said driving engine 1, between said driving engine 1 and said oil pump 2, power-transfer clutch 3 is set, when needs start said driving engine 1; Break off being connected between said driving engine 1 and the said oil pump 2 through said power-transfer clutch 3; After starting said driving engine 1, connect said driving engine 1 and said oil pump 2 through said power-transfer clutch 3, make said driving engine 1 drive said oil pump 2 work.
Need to prove that equally the power-transfer clutch described in the present technique scheme also should refer to sensu lato power-transfer clutch, promptly every being used for is connected the output shaft of driving engine and open circuited device with load, all belong to the category of the power-transfer clutch described in this paper.
Before driving engine, itself and oil pump are broken off; It is basic scheme of the present invention; Overcome the technological prejudice in the existing correlation technique effectively, that is, when start the engine, just broken off oil pump and its load in the existing correlation technique; Ignored the load that the oil circuit idle loop brings to driving engine when engine starting fully; Especially hydraulic pressure oil viscosity and density enlarge markedly under low temperature environment, and this moment, the idle loop of oil circuit also can bring very big load to driving engine, had obviously increased the startup difficulty of driving engine.
Adopt technical scheme of the present invention, be provided with power-transfer clutch 3 between driving engine 1 and the oil pump 2, when start the engine 1; Can be earlier through power-transfer clutch 3 with breaking off between driving engine 1 and the oil pump 2, after driving engine 1 starts, couple together between through power-transfer clutch 3 again, thereby drive oil pump 2 is worked driving engine and oil pump 2; Reduce the load of driving engine 1 when starting, improved the startability of driving engine 1, practiced thrift the consumption of fuel of driving engine 1; Practice thrift the energy, reduced cost;
Especially under psychro-environment, because ambient temperature is very low, hydraulic pressure oil viscosity and density can enlarge markedly; And along with the reduction meeting of temperature all the more obviously; Under this operating mode, break off itself and being connected of oil pump during start the engine 1, can reduce the load of driving engine 1 effectively; Significantly improve the startability of driving engine 1, the adaptive capacity of enhancement engineering machinery under psychro-environment.
Preferably, before connecting said driving engine 1 and said oil pump 2, also to carry out preheating to said driving engine 1 through said power-transfer clutch 3,
In a kind of specific embodiment, when in said load, comprising a plurality of oil pump 2, between said a plurality of oil pumps 2 and said driving engine 1, auxiliary gear box is set, and said power-transfer clutch 3 is arranged between said driving engine 1 and the said auxiliary gear box 4.Power-transfer clutch 3 is connected with each oil pump 2 through auxiliary gear box, as long as with the disconnection that is connected between driving engine 1 and the auxiliary gear box 4, has promptly broken off and being connected of all loads, and the mode that this kind is provided with power-transfer clutch 3 is the easiest, power-transfer clutch of need, and cost is minimum.
In sum, between load and driving engine, power-transfer clutch is set, has reduced the load of driving engine when starting, improved the startability of driving engine, practiced thrift the consumption of fuel of driving engine, practiced thrift the energy, reduced cost; Especially under psychro-environment, because ambient temperature is very low, hydraulic pressure oil viscosity and density can enlarge markedly; And along with the reduction meeting of temperature all the more obviously; Under this operating mode, break off itself and being connected of oil pump through power-transfer clutch during start the engine, can reduce the load of driving engine effectively; Significantly improve the startability of driving engine, the adaptive capacity of enhancement engineering machinery under psychro-environment.
In the present invention, term " first ", " second " only are used for purpose of description, and can not be interpreted as indication or hint relative importance, and term " a plurality of " then refers to two or more, only if clear and definite qualification is arranged in addition.
In the present invention, only if clear and definite regulation and qualification are arranged in addition, broad understanding all should be done in terms such as term " installation ", " linking to each other ", " connection ", " fixing ", for example, can be captive joint, also can be to removably connect, or connect integratedly; Can be mechanical connection, also can be to be electrically connected; Can be directly to link to each other, also can link to each other indirectly through intermediary, can be the connection of two element internals.For those of ordinary skill in the art, can understand above-mentioned term concrete implication in the present invention as the case may be.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. construction machinery and equipment; Comprise driving engine (1) and load, said driving engine (1) provides power for said load, comprises oil pump (2) in the said load; It is characterized in that; Also comprise power-transfer clutch (3), be arranged between said driving engine (1) and the said oil pump (2), in order to control being connected or disconnection between said driving engine (1) and the said oil pump (2).
2. construction machinery and equipment according to claim 1 is characterized in that, also comprises auxiliary gear box (4) and a plurality of said oil pump (2), and a plurality of said oil pumps (2) are connected with said driving engine (1) through said auxiliary gear box (4).
3. construction machinery and equipment according to claim 2 is characterized in that, said power-transfer clutch (3) is arranged between said auxiliary gear box (4) and the said driving engine (1), and said power-transfer clutch (3) is connected with said oil pump (2) through said auxiliary gear box (4).
4. construction machinery and equipment according to claim 2 is characterized in that, said power-transfer clutch (3) is arranged between said auxiliary gear box (4) and said oil pump (2), and said power-transfer clutch (3) is connected with said driving engine (1) through said auxiliary gear box (4).
5. construction machinery and equipment according to claim 4 is characterized in that, between said auxiliary gear box (4) and each said oil pump (2), is provided with said power-transfer clutch (3).
6. according to each described construction machinery and equipment in the claim 1 to 5, it is characterized in that said power-transfer clutch (3) is an electromagnetic clutch.
7. according to each described construction machinery and equipment in the claim 1 to 5, it is characterized in that said power-transfer clutch (3) is a mechanical clutch.
8. the startup method of a driving engine comprises oil pump (2) in the load of said driving engine (1), it is characterized in that, between said driving engine (1) and said oil pump (2), power-transfer clutch (3) is set,
When needs start said driving engine (1), break off being connected between said driving engine (1) and the said oil pump (2) through said power-transfer clutch (3),
Starting said driving engine (1) afterwards, connecting said driving engine (1) and said oil pump (2), making said driving engine (1) drive said oil pump (2) work through said power-transfer clutch (3).
9. the startup method of driving engine according to claim 1 is characterized in that, connecting said driving engine (1) and said oil pump (2) through said power-transfer clutch (3) before, also will carry out preheating to said driving engine (1).
10. according to Claim 8 or the startup method of 9 described driving engines; It is characterized in that; When in said load, comprising a plurality of oil pumps (2); Between said a plurality of oil pumps (2) and said driving engine (1), auxiliary gear box is set, and said power-transfer clutch (3) is arranged between said driving engine (1) and the said auxiliary gear box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100974118A CN102602285A (en) | 2012-04-05 | 2012-04-05 | Engineering machine and starting method for engine thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100974118A CN102602285A (en) | 2012-04-05 | 2012-04-05 | Engineering machine and starting method for engine thereof |
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| CN102602285A true CN102602285A (en) | 2012-07-25 |
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| CN2012100974118A Pending CN102602285A (en) | 2012-04-05 | 2012-04-05 | Engineering machine and starting method for engine thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162958A (en) * | 2013-02-06 | 2013-06-19 | 河南科技大学 | Vehicle hydraulic machinery stepless transmission test bench and test system |
| CN103496322A (en) * | 2013-10-21 | 2014-01-08 | 徐州重型机械有限公司 | Crane and engine power system thereof |
| CN104088862A (en) * | 2014-07-04 | 2014-10-08 | 三一汽车起重机械有限公司 | Oil pump preheating system, hydraulic drive system and engineering machine |
| CN105634226A (en) * | 2016-03-02 | 2016-06-01 | 江门日野电机有限公司 | Single-phase capacitor motor, capacitor device and driven oil pump and gate |
| CN109488700A (en) * | 2018-12-27 | 2019-03-19 | 常州常发农业装备工程技术研究有限公司 | Electrichydraulic control clutch and engine control system |
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| JP4285424B2 (en) * | 2005-03-09 | 2009-06-24 | 株式会社豊田中央研究所 | Engine starter |
| CN201428150Y (en) * | 2009-01-14 | 2010-03-24 | 陈梦企 | Hybrid excavator having transfer-case mechanism |
| CN201483036U (en) * | 2009-09-03 | 2010-05-26 | 河南省三力机械制造有限公司 | Double power vehicle-mounted drilling machine |
| CN202541315U (en) * | 2012-04-05 | 2012-11-21 | 三一汽车起重机械有限公司 | Engineering machinery |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US7244208B2 (en) * | 2003-10-08 | 2007-07-17 | Zf Friedrichshafen Ag | Drive train for a hybrid vehicle |
| JP4285424B2 (en) * | 2005-03-09 | 2009-06-24 | 株式会社豊田中央研究所 | Engine starter |
| CN201428150Y (en) * | 2009-01-14 | 2010-03-24 | 陈梦企 | Hybrid excavator having transfer-case mechanism |
| CN201483036U (en) * | 2009-09-03 | 2010-05-26 | 河南省三力机械制造有限公司 | Double power vehicle-mounted drilling machine |
| CN202541315U (en) * | 2012-04-05 | 2012-11-21 | 三一汽车起重机械有限公司 | Engineering machinery |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162958A (en) * | 2013-02-06 | 2013-06-19 | 河南科技大学 | Vehicle hydraulic machinery stepless transmission test bench and test system |
| CN103496322A (en) * | 2013-10-21 | 2014-01-08 | 徐州重型机械有限公司 | Crane and engine power system thereof |
| CN103496322B (en) * | 2013-10-21 | 2017-02-08 | 徐州重型机械有限公司 | Crane and engine power system thereof |
| CN104088862A (en) * | 2014-07-04 | 2014-10-08 | 三一汽车起重机械有限公司 | Oil pump preheating system, hydraulic drive system and engineering machine |
| CN105634226A (en) * | 2016-03-02 | 2016-06-01 | 江门日野电机有限公司 | Single-phase capacitor motor, capacitor device and driven oil pump and gate |
| CN109488700A (en) * | 2018-12-27 | 2019-03-19 | 常州常发农业装备工程技术研究有限公司 | Electrichydraulic control clutch and engine control system |
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Application publication date: 20120725 |