CN203488484U - Crane and hydraulic system thereof - Google Patents
Crane and hydraulic system thereof Download PDFInfo
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- CN203488484U CN203488484U CN201320546164.5U CN201320546164U CN203488484U CN 203488484 U CN203488484 U CN 203488484U CN 201320546164 U CN201320546164 U CN 201320546164U CN 203488484 U CN203488484 U CN 203488484U
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Abstract
The utility model discloses a hydraulic system. The hydraulic system comprises a main system, a rotating system, a pilot system, a steering brake system and an unloading system, wherein the main system uses a first hydraulic pump and a second hydraulic pump for oil supply and uses a first oil return oil way for oil return; the rotating system uses a third hydraulic pump for oil supply and uses a second oil return oil way for oil return; the pilot system uses a fourth hydraulic pump for oil supply and uses a third oil return oil way for oil return; the steering brake system uses a fifth hydraulic pump for oil supply and uses a fourth oil return oil way for oil return; the unloading system uses the third hydraulic pump for oil supply and uses a fifth oil return oil way for oil return; the first oil return oil way, the second oil return oil way, the third oil return oil way and the fourth oil return oil way all go through a first radiator; the fifth oil return oil way goes through a second radiator. During driving of a crane, the unloading system works, the third hydraulic pump supplies oil to the unloading system, and the second radiator can radiate heat of the fifth oil return oil way of the unloading system, so that overhigh oil temperature of the hydraulic system after long-time driving can be prevented, the influence of the overhigh oil temperature on the work of the crane is eliminated, and the reliability of the system is improved.
Description
Technical field
The utility model relates to hydraulics field, particularly relates to a kind of hydraulic system.In addition, the utility model also relates to a kind of hoist of applying above-mentioned hydraulic system.
Background technique
At present, the oil hydraulic pump in some hoists is for often driving, and oil hydraulic pump and motor are always in coupled condition, engine operation, oil hydraulic pump is work just, and the portable hoist that often drives oil hydraulic pump is in the process of moving, the oil hydraulic pump of its hydraulic system is always in running order, has certain power loss.
Please refer to Fig. 1, the principle schematic of the hydraulic system that Fig. 1 is a kind of typical hoist.Crane hydraulic system is provided with the first radiator.
Crane hydraulic system mainly comprises that main system 12(is containing luffing, stretch and hoisting system, by the first oil hydraulic pump 1 and the second oil hydraulic pump 2 fuel feeding, by the first oil return circuit T1 oil return), rotary system 11(is by the 3rd oil hydraulic pump 3 fuel feeding, share oil sources with lower truck system 7, by the second oil return circuit T2 oil return), pilot system 10(is by the 4th oil hydraulic pump 4 fuel feeding, by the 3rd oil return circuit T3 oil return), braking in a turn system 9(is by the 5th oil hydraulic pump 5 fuel feeding, by the 4th oil return circuit T4 oil return) and lower truck system 7(and shared the 3rd oil hydraulic pump 3 fuel feeding of rotary system 11, by the 5th oil return circuit T5 oil return), while travelling operation, the 3rd oil hydraulic pump 3 is lower truck system 7 fuel feeding, during hoisting operation, for rotary system 11 fuel feeding.
The open temp of the first radiator 8 is T1, can be the oil return circuit heat radiation of the first oil hydraulic pump 1, the second oil hydraulic pump 2, the 4th oil hydraulic pump 4 and the 5th oil hydraulic pump 5.In hoist hoisting operation process, when the temperature rise of hydraulic system reaches open temp T1, starting the first radiator 8, the first radiators 8 is the hydraulic system heat radiation in hoisting operation.In crane running process, conventionally by fuel tank 6 natural heat dissipations.
In crane running operation process, because being often, drives by each oil hydraulic pump in hydraulic system, each oil hydraulic pump is all in running order, cannot avoid the power loss of hydraulic system, the natural heat dissipation of fuel tank 6 cannot balanced hydraulic system loss, in the process of travelling, the oil temperature of hydraulic system will raise gradually, can cause the excess Temperature of the front hydraulic system of hoisting operation after travelling for a long time, affect the reliability of hydraulic system.
Therefore, how to avoid hoist to travel for a long time after the oil temperature of hydraulic system too high and affect the reliability of system, be that those skilled in the art are badly in need of the technical problem solving at present.
Model utility content
The purpose of this utility model is to provide a kind of hydraulic system, and after this hydraulic system can avoid hoist to travel for a long time, the excess Temperature of hydraulic oil, has higher reliability.In addition, another object of the present utility model is to provide a kind of hoist of applying above-mentioned hydraulic system.
In order to realize above-mentioned technical purpose, the utility model provides a kind of hydraulic system, comprising:
Main system, by the first oil hydraulic pump and the second oil hydraulic pump fuel feeding, the first oil return circuit oil return;
Lower truck system, by the 3rd oil hydraulic pump fuel feeding, the 5th oil return circuit oil return;
Pilot system, by the 4th oil hydraulic pump fuel feeding, the 3rd oil return circuit oil return;
Described the first oil return circuit, described the 3rd oil return circuit are all through the first radiator;
Described the 5th oil return circuit is through the second radiator.
Preferably, in the oil feed line of described the first oil hydraulic pump, described the second oil hydraulic pump and described the 4th oil hydraulic pump, at least one has switching valve, described switching valve has two working positions, the first working position can be communicated with oil hydraulic pump and work system, and the second working position can be communicated with described oil hydraulic pump and described the second radiator.
Preferably, the oil feed line of described the first oil hydraulic pump has described switching valve, described first working position of described switching valve can be communicated with described the first oil hydraulic pump and described main system, and described the second working position can be communicated with described the first oil hydraulic pump and described the second radiator.
Preferably, also comprise the first temperature detect switch (TDS) and the second temperature detect switch (TDS), described the first temperature detect switch (TDS) has the first open temp, controls described the first radiator work; Described the second temperature detect switch (TDS) has the second open temp, controls described the second radiator work.
Preferably, also comprise the 3rd temperature detect switch (TDS), described the 3rd temperature detect switch (TDS) has the 3rd open temp, controls described switching valve and described the second radiator work.
Preferably, the first open temp of described the first temperature detect switch (TDS) is less than the 3rd open temp of described the 3rd temperature detect switch (TDS).
Preferably, the second open temp of described the second temperature detect switch (TDS) is less than the 3rd open temp of described the 3rd temperature detect switch (TDS).
Preferably, the 3rd open temp of described the 3rd temperature detect switch (TDS) is definite by the safety temperature scope of hydraulic system, and described the 3rd temperature detect switch (TDS) can send warning signal to alarm system, makes alarm system send superhigh temperature warning.
The utility model also provides a kind of hoist, comprises motor and hydraulic system, and the oil hydraulic pump of described motor and described hydraulic system is for often driving, and described hydraulic system is the hydraulic system described in above-mentioned any one.
Preferably, described hoist is off-the-highway tire formula hoist.
The hydraulic system that the utility model provides comprises: main system, by the first oil hydraulic pump and the second oil hydraulic pump fuel feeding, the first oil return circuit oil return; Rotary system, by the 3rd oil hydraulic pump fuel feeding, the second oil return circuit oil return; Pilot system, by the 4th oil hydraulic pump fuel feeding, the 3rd oil return circuit oil return; Braking in a turn system, by the 5th oil hydraulic pump fuel feeding, the 4th oil return circuit oil return; Lower truck system, by the 3rd oil hydraulic pump fuel feeding, the 5th oil return circuit oil return; The first oil return circuit, the second oil return circuit, the 3rd oil return circuit, the 4th oil return circuit are all through the first radiator; The 5th oil return circuit is through the second radiator.
Hoist when travelling state, lower truck system and braking in a turn system works, the 3rd oil hydraulic pump is lower truck system fuel feeding, the 5th oil hydraulic pump is braking in a turn system fuel feeding.The first oil return circuit, the 3rd oil return circuit and the 4th oil return circuit are all through the first radiator, and the 5th oil return circuit is through the second radiator.When hydraulic system need to be dispelled the heat, the 5th oil return circuit heat radiation that the second radiator work is lower truck system, compared with prior art, in the process of moving, the second radiator work, can avoid after travelling for a long time the oil temperature of hydraulic system too high, eliminate the too high impact on crane job of oil temperature, improve the reliability of system.
Hoist is when hoisting operation operating mode, and the temperature of hydraulic system raises gradually, while being elevated to the open temp of the first radiator, and the first radiator work; If hoist is for a long time under the operating mode in high-speed overload, the radiating effect of the first radiator can not meet the radiating requirements of hydraulic system, start the second radiator, two radiators, simultaneously for hydraulic system heat radiation, are enough avoided the excess Temperature in the long-time hoisting operation process of hoist.
Concrete, in the oil feed line of the first oil hydraulic pump, the second oil hydraulic pump and the 4th oil hydraulic pump, at least one has switching valve, and switching valve has two working positions, the first working position can be communicated with oil hydraulic pump and work system, and the second working position can be communicated with oil hydraulic pump and the second radiator.
In crane running process, except lower truck system in running order in travelling and braking in a turn system, the oil feed line of other oil hydraulic pump all can arrange switching valve, in crane running process, switching valve is positioned at the second working position, will be through the direct off-load oil sump tank of hydraulic oil of oil hydraulic pump, or through the second radiator off-load oil sump tank again.In three oil feed lines of the first oil hydraulic pump, the second oil hydraulic pump and the 4th oil hydraulic pump, switching valve can be all set, also can switching valve be set for any two, can also switching valve be set for any one.
In the first oil hydraulic pump, the second oil hydraulic pump and the 4th oil hydraulic pump three, the power of the first oil hydraulic pump is maximum, in a kind of preferred mode, the oil feed line that can be only the first oil hydraulic pump arranges switching valve, the first working position of switching valve can be communicated with the first oil hydraulic pump and main system, and the second working position can be communicated with the first oil hydraulic pump and the second radiator.
Further, hydraulic system can also comprise the first temperature detect switch (TDS) and the second temperature detect switch (TDS), and the first temperature detect switch (TDS) has the first open temp, controls the first radiator work; The second temperature detect switch (TDS) has the second open temp, controls the second radiator work.
The first open temp of the first temperature detect switch (TDS) is applicable to hoisting operation operating mode, and the second open temp of the second temperature detect switch (TDS) is applicable to running process, and conventionally, the second open temp is less than the first open temp.
In another kind of optimal way, hydraulic system can also comprise the 3rd temperature detect switch (TDS), and the 3rd temperature detect switch (TDS) has the 3rd open temp, controls switching valve and the second radiator work.Concrete, the first open temp is less than the 3rd open temp, and the second open temp is less than the 3rd open temp, and the 3rd open temp can be definite by the safety temperature scope of hydraulic system, and the 3rd temperature detect switch (TDS) can be controlled alarm system and send superhigh temperature warning.
The utility model also provides a kind of hoist, comprises motor and hydraulic system, and the oil hydraulic pump of motor and hydraulic system is for often driving, and hydraulic system is above-mentioned hydraulic system.After the hydraulic system of this hoist can avoid hoist to travel for a long time, the excess Temperature of hydraulic oil, has higher reliability.
Accompanying drawing explanation
Fig. 1 is a kind of principle schematic of hydraulic system of typical hoist;
Fig. 2 is the principle schematic of a kind of embodiment of hydraulic system provided by the utility model.
Wherein, the reference character in Fig. 1 and Fig. 2 and the corresponding relation between component names are as follows:
The first oil hydraulic pump 1; The second oil hydraulic pump 2; The 3rd oil hydraulic pump 3; The 4th oil hydraulic pump 4; The 5th oil hydraulic pump 5; The first oil return circuit T1; The second oil return circuit T2; The 3rd oil return circuit T3; The 4th oil return circuit T4; The 5th oil return circuit T5; Fuel tank 6; Lower truck system 7; The first radiator 8; Braking in a turn system 9; Pilot system 10; Rotary system 11; Main system 12; Center steering body 13; The first temperature detect switch (TDS) 14; Switching valve 15; The second radiator 16; The second temperature detect switch (TDS) 17; The 3rd temperature detect switch (TDS) 18.
Embodiment
Core of the present utility model is to provide a kind of hydraulic system, and after this hydraulic system can avoid hoist to travel for a long time, the excess Temperature of hydraulic oil, has higher reliability.In addition, another object of the present utility model is to provide a kind of hoist of applying above-mentioned hydraulic system.
In order to make those skilled in the art person understand better the utility model scheme, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Please refer to Fig. 2, Fig. 2 is the principle schematic of a kind of embodiment of hydraulic system provided by the utility model.
In a kind of concrete mode of execution, the utility model provides a kind of hydraulic system, comprising: main system 12, by the first oil hydraulic pump 1 and the second oil hydraulic pump 2 fuel feeding, the first oil return circuit T1 oil return; Rotary system 11, by the 3rd oil hydraulic pump 3 fuel feeding, the second oil return circuit T2 oil return; Pilot system 10, by the 4th oil hydraulic pump 4 fuel feeding, the 3rd oil return circuit T3 oil return; Braking in a turn system 9, by the 5th oil hydraulic pump 5 fuel feeding, the 4th oil return circuit T4 oil return; Lower truck system 7, by the 3rd oil hydraulic pump 3 fuel feeding, the 5th oil return circuit T5 oil return; Wherein, the first oil return circuit T1, the second oil return circuit T2, the 3rd oil return circuit T3, the 4th oil return circuit T4 are all through the first radiator 8; The 5th oil return circuit T5 is through the second radiator T16.
Hoist is when travelling state, and lower truck system 7 and braking in a turn system 9 are worked, and the 3rd oil hydraulic pump 3 is lower truck system 7 fuel feeding, and the 5th oil hydraulic pump 5 is braking in a turn system 9 fuel feeding, and lower truck system 7 is always in running order, and the power of the 3rd oil hydraulic pump 3 is larger.In this process, the first oil return circuit T1, the 3rd oil return circuit T3 and the 4th oil return circuit T4 be all through the first radiator 8, then through center steering body 13, and then oil sump tank 6, the five oil return circuit T5 are through the second radiator 16, then oil sump tank 6.
When hydraulic system need to be dispelled the heat, the second radiator 16 work, compared with prior art, in the process of moving, the second radiator 16 can be the 5th oil return circuit T5 heat radiation of the system of getting off 7, and the oil return circuit of main heating has independent radiator, this hydraulic system has good radiating effect, can avoid after travelling for a long time the oil temperature of hydraulic system too high, can eliminate travel for a long time after the too high impact on crane job of oil temperature, improved the reliability of hydraulic system.
Hoist is when hoisting operation state, and the temperature of hydraulic system raises gradually, while being elevated to the open temp of the first radiator 8, and the first radiator 8 work; If hoist is for a long time under the operating mode in high-speed overload, when the radiating effect of the first radiator 8 can not meet the radiating requirements of hydraulic system, start the second radiator 16, two radiators are hydraulic system heat radiation simultaneously, improve the radiating effect of hydraulic system, can avoid the excess Temperature in the long-time hoisting operation process of hoist.
Concrete, in the oil feed line of the first oil hydraulic pump 1, the second oil hydraulic pump 2 and the 4th oil hydraulic pump 4, at least one has switching valve 15, and switching valve 15 has two working positions, the first working position can be communicated with oil hydraulic pump and work system, and the second working position can be communicated with oil hydraulic pump and the second radiator 16.
In crane running process, except lower truck system 7 in running order in travelling and braking in a turn system 9, the oil feed line of other oil hydraulic pump all can arrange switching valve 15, switching valve 15 has two working positions, in crane running process, switching valve 15 is positioned at the second working position, is communicated with oil hydraulic pump and the second radiator 16, make hydraulic oil through oil hydraulic pump oil sump tank 6 again after the second radiator 16, also can make the direct off-load oil sump tank 6 of hydraulic oil through oil hydraulic pump; In hoist hoisting operation process, switching valve 15 is positioned at the first working position, is communicated with oil hydraulic pump and work system, and each system all can normally be worked.
In three oil feed lines of the first oil hydraulic pump 1, the second oil hydraulic pump 2 and the 4th oil hydraulic pump 4, switching valve 15 can be all set, also can switching valve 15 be set for any two, can also switching valve 15 be set for any one.In crane running process, the 3rd oil hydraulic pump 3 is lower truck system 7 feed flows, so the 3rd oil hydraulic pump 3 can not arrange switching valve 15 for the oil feed line of rotary system 11.
In the first oil hydraulic pump 1, the second oil hydraulic pump 2 and the 4th oil hydraulic pump 4 threes, the power of the first oil hydraulic pump 1 is maximum, so, in a kind of preferred mode, the oil feed line that is only the first oil hydraulic pump 1 arranges switching valve 15, the first working position of switching valve 15 can be communicated with the first oil hydraulic pump 1 can be communicated with the first oil hydraulic pump 1 and the second radiator 16 with main system 12, the second working positions.
In crane running process, the oil return circuit of the first oil hydraulic pump 1 and the 3rd oil hydraulic pump 3 is all through the second radiator 16, in the second radiator 16 working procedure, all can be good at the effect of performance heat radiation, radiating effect is better, hydraulic system can access good heat radiation, can avoid the oil temperature of the front hydraulic system of hoisting operation after travelling for a long time too high, has improved the reliability of hydraulic system.
A kind of preferred embodiment in, hydraulic system also comprises that the first temperature detect switch (TDS) 14 and the second temperature detect switch (TDS) 17, the first temperature detect switch (TDS)s 14 have the first open temp, can control the first radiator 8 work; The second temperature detect switch (TDS) 17 has the second open temp, can control the second radiator 16 work.
The first open temp of the first temperature detect switch (TDS) 14 is t1, and the second open temp of the second temperature detect switch (TDS) 17 is t2.In crane running process, switching valve 15 is positioned at the second working position, makes hydraulic oil through the first oil hydraulic pump 1 without main system 12, and direct oil sump tank 6, realize the off-load of the first oil hydraulic pump 1, initiatively reduced the power loss of system, reduced the heating value of hydraulic system.
After hoist travels for a long time, when hydraulic system temperature reaches the second open temp t2, the second temperature detect switch (TDS) 17 starts the second radiator 16 and dispels the heat, the second radiator 16 is the 5th oil return circuit T5 of lower truck system 7 and the heat radiation of the emptying oil circuit of the first oil hydraulic pump 1, reduce the temperature rise of hydraulic system, avoid the temperature rise of hydraulic system in crane running process too high, reduced the impact of hydraulic system temperature rise on hoisting operation.
In hoist hoisting operation process, the temperature of hydraulic system raises gradually, while reaching the first open temp t1, and the first radiator 8 work, under general operating mode, the first radiator 8 can meet the radiating requirements of hydraulic system.If hoist is for a long time under the operating mode in high-speed overload, the radiating effect of the first radiator 8 can not meet the radiating requirements of hydraulic system, start the second radiator 16, the first radiator 8 and the second radiator 16 are hydraulic system heat radiation simultaneously, reduce the temperature rise of hydraulic system, improve hydraulic system radiating effect, can avoid the excess Temperature in the long-time hoisting operation process of hoist.
Concrete, the first open temp t1 of the first temperature detect switch (TDS) 14 is applicable to hoisting operation operating mode, and the second open temp t2 of the second temperature detect switch (TDS) 17 is applicable to driving cycle, and conventionally, the second open temp t2 is less than the first open temp t1.
In another preferred embodiment, hydraulic system also comprises that the 3rd temperature detect switch (TDS) 18, the three temperature detect switch (TDS)s 18 have the 3rd open temp, controls switching valve 15 and the second radiator 16 work.
In crane running process, switching valve 15 is manually controlled, and makes it in the second working position; In hoist hoisting operation process, first manually control switching valve 15 and be positioned at the first working position, each oil hydraulic pump is each work system normal fuel injection, then by the 3rd temperature detect switch (TDS) 18, controlled, when the temperature of hydraulic system reaches the 3rd open temp t3, control switching valve 15 and be switched to the second working position, control the second radiator 16 simultaneously and start working.
In hoist hoisting operation process, the temperature of hydraulic system raises gradually, while reaching the first open temp t1, and the first radiator 8 work, under general operating mode, the first radiator 8 can meet the radiating requirements of hydraulic system.If hoist is for a long time under the operating mode in high-speed overload, hydraulic system temperature can continue to raise, while reaching the 3rd open temp t3, it is the first oil hydraulic pump 1 off-load that the 3rd temperature detect switch (TDS) 18 is controlled switching valve 15, start the second radiator 16 simultaneously, the first radiator 8 and the second radiator 16 for hydraulic system heat radiation, have improved hydraulic system radiating effect simultaneously.
Concrete, the first open temp t1 of the first temperature detect switch (TDS) 14 is less than the 3rd open temp t3 of the 3rd temperature detect switch (TDS) 18, and the second open temp t2 of the second temperature detect switch (TDS) 17 is also less than the 3rd open temp t3 of the 3rd temperature detect switch (TDS) 18.
The temperature range that has a safety in the hydraulic work system process of hoist, when the temperature of hydraulic oil is less than 80 degrees Celsius, hydraulic system all can normally be worked, and the 3rd open temp t3 is the temperature value approaching with the high temperature of safety temperature scope.
Conventionally hoist is in hoisting operation process, when the temperature of hydraulic system reaches t1, the first temperature detect switch (TDS) 14 starts the first radiator 8, the first radiator 8 can make hydraulic system be issued to thermal equilibrium in temperature t 1, can meet radiating requirements, and in this process, lower truck system 7 is not worked, the 3rd oil hydraulic pump 3 is rotary system 11 fuel feeding, and the second radiator 16 passes through without hydraulic oil.
When the continuously long-time hoisting operation of hoist high-speed overload, the loss of system will increase greatly, in short time, temperature can raise rapidly, when temperature reaches the 3rd open temp t3, the 3rd temperature detect switch (TDS) 18 is controlled switching valve 15 and is switched to the second working position, makes the first oil hydraulic pump 1 off-load, by the second oil hydraulic pump 2, maintained the motion of main system 12, main system 12 reductions of speed, can work on, and have greatly reduced the power loss of main system 12; Meanwhile, the 3rd temperature detect switch (TDS) 18 is controlled the second radiators 16 work, can make hydraulic oil through the first oil hydraulic pump 1 off-load oil sump tank 6 again that first dispels the heat.
Concrete, the 3rd open temp t3 can be determined by the safety temperature scope of hydraulic system, can be 85 degrees Celsius, when the temperature of hydraulic system reaches the 3rd open temp t3, the 3rd temperature detect switch (TDS) 18 sends warning signal to alarm system when controlling switching valves 15 and the second radiator 16, make alarm system send acoustooptic alarm, on main display, show hydraulic system temperature superelevation simultaneously, active warning operator control hydraulic system tick-over, guarantee the life-span of hydraulic element and the reliability of system, improve the Security of hoist car load.
This hydraulic system not only has good radiating effect in crane running process, can avoid the oil temperature of the front hydraulic system of hoisting operation too high, and in the process of hoist high-speed overload operation, can reduce the power loss of hydraulic system, improve radiating effect; And function hydraulic system also to high temperature protection.The radiating effect of this hydraulic system is better, can adapt to the various operating modes of hoist.
Except above-mentioned hydraulic system, the utility model also provides a kind of hoist, comprises motor and hydraulic system, and the oil hydraulic pump of motor and hydraulic system is for often driving, hydraulic system is the hydraulic system described in above-mentioned any one, also has the technique effect of above-mentioned hydraulic system.The structure of these other parts of hoist please refer to prior art, repeats no more herein.
Concrete, above-mentioned hoist can be off-the-highway tire formula hoist, can be also other Mobile crane.
Above hoist provided by the utility model and hydraulic system thereof are described in detail.Applied specific case herein principle of the present utility model and mode of execution are set forth, above embodiment's explanation is just for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (10)
1. a hydraulic system, comprising:
Main system (12), by the first oil hydraulic pump (1) and the second oil hydraulic pump (2) fuel feeding, the first oil return circuit (T1) oil return;
Lower truck system (7), by the 3rd oil hydraulic pump (3) fuel feeding, the 5th oil return circuit (T5) oil return;
Pilot system (10), by the 4th oil hydraulic pump (4) fuel feeding, the 3rd oil return circuit (T3) oil return;
Described the first oil return circuit (T1), described the 3rd oil return circuit (T3) are all through the first radiator (8);
It is characterized in that, described the 5th oil return circuit (T5) is through the second radiator (16).
2. hydraulic system as claimed in claim 1, it is characterized in that, in the oil feed line of described the first oil hydraulic pump (1), described the second oil hydraulic pump (2) and described the 4th oil hydraulic pump (4), at least one has switching valve (15), described switching valve (15) has two working positions, the first working position can be communicated with oil hydraulic pump and work system, and the second working position can be communicated with described oil hydraulic pump and described the second radiator (16).
3. hydraulic system as claimed in claim 2, it is characterized in that, the oil feed line of described the first oil hydraulic pump (1) has described switching valve (15), described first working position of described switching valve (15) can be communicated with described the first oil hydraulic pump (1) and described main system (12), and described the second working position can be communicated with described the first oil hydraulic pump (1) and described the second radiator (16).
4. hydraulic system as claimed in claim 3, is characterized in that, also comprises the first temperature detect switch (TDS) (14) and the second temperature detect switch (TDS) (17), and described the first temperature detect switch (TDS) (14) has the first open temp, controls described the first radiator (8) work; Described the second temperature detect switch (TDS) (17) has the second open temp, controls described the second radiator (16) work.
5. hydraulic system as claimed in claim 4, is characterized in that, also comprises the 3rd temperature detect switch (TDS) (18), and described the 3rd temperature detect switch (TDS) (18) has the 3rd open temp, controls described switching valve (15) and described the second radiator (16) work.
6. hydraulic system as claimed in claim 5, is characterized in that, the first open temp of described the first temperature detect switch (TDS) (17) is less than the 3rd open temp of described the 3rd temperature detect switch (TDS) (18).
7. hydraulic system as claimed in claim 6, is characterized in that, the second open temp of described the second temperature detect switch (TDS) (17) is less than the 3rd open temp of described the 3rd temperature detect switch (TDS) (18).
8. hydraulic system as claimed in claim 7, it is characterized in that, the 3rd open temp of described the 3rd temperature detect switch (TDS) (18) is definite by the safety temperature scope of hydraulic system, and described the 3rd temperature detect switch (TDS) (18) can send warning signal to alarm system, makes alarm system send superhigh temperature warning.
9. a hoist, comprises motor and hydraulic system, and the oil hydraulic pump of described motor and described hydraulic system, for often driving, is characterized in that, described hydraulic system is the hydraulic system described in claim 1 to 8 any one.
10. hoist as claimed in claim 9, is characterized in that, described hoist is off-the-highway tire formula hoist.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320546164.5U CN203488484U (en) | 2013-09-03 | 2013-09-03 | Crane and hydraulic system thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320546164.5U CN203488484U (en) | 2013-09-03 | 2013-09-03 | Crane and hydraulic system thereof |
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| CN203488484U true CN203488484U (en) | 2014-03-19 |
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| CN201320546164.5U Expired - Fee Related CN203488484U (en) | 2013-09-03 | 2013-09-03 | Crane and hydraulic system thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104895683A (en) * | 2015-06-26 | 2015-09-09 | 潍柴动力股份有限公司 | Automobile crane and engine cylinder deactivation control method and device thereof |
| CN105156405A (en) * | 2015-07-29 | 2015-12-16 | 徐州重型机械有限公司 | Hydraulic oil cooling system, crane and control method for hydraulic oil cooling system |
| CN105438989A (en) * | 2014-12-19 | 2016-03-30 | 徐州重型机械有限公司 | Upper crane part and lower crane part oil supply system of crane |
| CN105465106A (en) * | 2014-10-16 | 2016-04-06 | 徐州重型机械有限公司 | Hydraulic cooling system, control method and crane |
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2013
- 2013-09-03 CN CN201320546164.5U patent/CN203488484U/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105465106A (en) * | 2014-10-16 | 2016-04-06 | 徐州重型机械有限公司 | Hydraulic cooling system, control method and crane |
| CN105465106B (en) * | 2014-10-16 | 2019-02-22 | 徐州重型机械有限公司 | Hydraulic radiating, control method and crane |
| CN105438989A (en) * | 2014-12-19 | 2016-03-30 | 徐州重型机械有限公司 | Upper crane part and lower crane part oil supply system of crane |
| CN105438989B (en) * | 2014-12-19 | 2018-02-16 | 徐州重型机械有限公司 | Crane is got on or off the bus oil supply system |
| CN104895683A (en) * | 2015-06-26 | 2015-09-09 | 潍柴动力股份有限公司 | Automobile crane and engine cylinder deactivation control method and device thereof |
| CN105156405A (en) * | 2015-07-29 | 2015-12-16 | 徐州重型机械有限公司 | Hydraulic oil cooling system, crane and control method for hydraulic oil cooling system |
| CN105156405B (en) * | 2015-07-29 | 2019-03-26 | 徐州重型机械有限公司 | Hydraulic oil cooling system, crane and hydraulic oil cooling system control method |
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