CN105422526A - Hydraulic system, motor sweeper hydraulic system and motor sweeper with motor sweeper hydraulic system - Google Patents
Hydraulic system, motor sweeper hydraulic system and motor sweeper with motor sweeper hydraulic system Download PDFInfo
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- CN105422526A CN105422526A CN201510886171.3A CN201510886171A CN105422526A CN 105422526 A CN105422526 A CN 105422526A CN 201510886171 A CN201510886171 A CN 201510886171A CN 105422526 A CN105422526 A CN 105422526A
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Abstract
The invention provides a hydraulic system, a motor sweeper hydraulic system and a motor sweeper with the motor sweeper hydraulic system. The hydraulic system comprises a hydraulic oil tank, a hydraulic pump, an oil conveying pipe, an oil return pipe, at least one oil pipe and a plurality of hydraulic motors. The hydraulic oil tank is provided with a hydraulic oil inlet and a hydraulic oil outlet. The hydraulic pump is provided with a hydraulic pump inlet and a hydraulic pump outlet, and the hydraulic pump inlet is communicated with the hydraulic oil outlet through a pipe. The oil conveying pipe is communicated with the hydraulic pump outlet. The oil return pipe is communicated with the hydraulic oil inlet. The two ends of the oil pipes are communicated with the oil conveying pipe and the oil return pipe respectively. At least two hydraulic motors are connected to one oil pipe in series. Compared with a hydraulic system in the prior art, according to the hydraulic system, the number of branches from the oil conveying pipe to the oil return pipe is lowered, the requirements for the hydraulic oil tank and a gear pump are lowered, and equipment cost is greatly reduced.
Description
Technical field
The present invention relates to hydraulic system technical field, be specifically related to a kind of hydraulic system, sweeper hydraulic system and there is the sweeper of this hydraulic system.
Background technique
Sweeper is mainly used in the pavement garbage cleaning of urban road, generally comprises multiple side by fluid motor-driven and sweeps dish, and the sucker be communicated with blower fan.When dish rotation work is swept in oil hydraulic motor band side, dish is swept by near refuse sweeping to sucker in side, and blower fan rotates and makes sucker produce negative pressure, is absorbed by rubbish clean.When road conditions are poor or pavement garbage is too much, also need to increase rolling and brushing and sweep dish, continuing to clean forward, until all rubbish is absorbed totally by sucker completely by not absorbed clean rubbish by sucker.
Sweeper hydraulic system of the prior art, sweep the oil hydraulic motor that dish and rolling and brushing sweep dish work to be all arranged in parallel for driving each side, that is, from the hydraulic oil that hydraulic oil container is discharged through gear pump, it is directly the supply of each oil hydraulic motor simultaneously, and after flowing through each oil hydraulic motor respectively, then flow back into hydraulic oil container respectively.Operationally, in order to ensure the rotating speed needed for each oil hydraulic motor work, need to maintain certain hydraulic difference at the two ends of each oil hydraulic motor, after dish is swept in newly-increased rolling and brushing, need to increase the middle part motor driving rolling and brushing to sweep dish work, which increase motor quantity (sweep in side dish number more time, also there is similar situation), in order to maintain above-mentioned hydraulic difference, when power source (motor) rotating speed is certain, the volume of hydraulic oil container must be increased, and the gear pump adopting discharge capacity larger, this causes high cost.Also there is same problem in other similar hydraulic system of the prior art.
Therefore, how existing hydraulic system is improved, even if after making to increase parts to be driven (dish is swept in such as rolling and brushing), also without the need to increasing hydraulic oil container volume and adopting the gear pump that discharge capacity is larger, thus reduce costs, be still unsolved technical barrier in prior art.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is to overcome hydraulic system of the prior art after increase parts to be driven, for ensureing hydraulic oil supply, need increase hydraulic oil container volume and adopt the gear pump that discharge capacity is larger, so that the technological deficiency of high cost, even if thus provide a kind of after increase parts to be driven, do not increasing hydraulic oil container volume, when the gear pump not adopting discharge capacity larger, also can ensure hydraulic oil supply, the hydraulic system that thus cost is lower.
The present invention also provides a kind of sweeper hydraulic system.
The present invention also provides a kind of sweeper with above-mentioned hydraulic system.
For this reason, the invention provides a kind of hydraulic system, comprising:
Hydraulic oil container, has hydraulic oil inlet and hydraulic oil outlet;
Oil hydraulic pump, has oil hydraulic pump import and hydraulic pump outlet, and described oil hydraulic pump import is communicated with described hydraulic oil outlet by pipeline;
Transport pipe, is communicated with described hydraulic pump outlet;
Return tube, is communicated with described hydraulic oil inlet;
Also comprise:
Oil pipe, is at least one, and its two ends are communicated with the filler opening of described return tube with the oil outlet of described transport pipe respectively;
Oil hydraulic motor, for multiple, wherein has at least two to be connected in series on same described oil pipe.
As the preferred scheme of one, described oil pipe has multiple dogleg section, multiple dogleg section forms multipair parallel pipe portion, between often pair of parallel pipe portion, an oil hydraulic motor is at least set, between often pair of parallel pipe portion, a control switch is also set, described control switch is used in the series connection oil circuit of the oil hydraulic motor of its correspondence access oil pipe, or this oil hydraulic motor is not accessed in the series connection oil circuit of oil pipe.
As the preferred scheme of one, one of them control switch is the first control switch, and described first control switch has:
First interface, is communicated with the oil outlet of described transport pipe;
Second interface, is communicated with the filler opening of described oil pipe;
3rd interface, is communicated with the middle part hydraulic fluid port of described oil pipe, and described middle part hydraulic fluid port is being connected between at least two on described oil pipe adjacent oil hydraulic motors;
Described first control switch has the first state making described first interface and described second orifice, and makes the second state of described first interface and described 3rd orifice.
As a kind of preferred version, described first control switch also comprises:
4th interface, is communicated with the filler opening of described return tube;
First one-way valve, is arranged on the pipeline of described 3rd interface of connection and described middle part hydraulic fluid port, and can towards the direction one-way conduction of described middle part hydraulic fluid port;
Second one-way valve, is arranged on the pipeline between the filler opening of described oil pipe and described middle part hydraulic fluid port, and can towards the direction one-way conduction of described middle part hydraulic fluid port;
When described first interface and described second orifice, described 4th interface and described 3rd orifice;
When described first interface and described 3rd open communication, described 4th interface and described second orifice.
As a kind of preferred version, described first control switch also have make described first interface neither with described second orifice, also not with the third state of described 3rd orifice;
Described first interface neither with described second orifice, time also not with described 3rd orifice, described second interface, described 3rd interface and described 4th orifice.
As a kind of preferred version, described second one-way valve is arranged near between the described oil hydraulic motor of described middle part hydraulic fluid port and described middle part hydraulic fluid port.
As a kind of preferred version, described control switch is solenoid valve.
As a kind of preferred version, also comprise the stand by pump be arranged in parallel with described oil hydraulic pump.
As a kind of preferred version, on from described hydraulic oil inlet to the pipeline of described oil hydraulic pump import, be disposed with oil absorption filter and ball valve.
As a kind of preferred version, on from described hydraulic oil inlet to the oil circuit of described oil absorption filter, be also disposed with liquid level relay, air filter and oil temperature oil level indicator; Oil circuit between described return tube and the hydraulic oil inlet of described hydraulic oil container is also provided with return filter, for filtering hydraulic oil.
The present invention also provides a kind of sweeper hydraulic system, for the hydraulic system described in above-mentioned any one, wherein, be connected at least two oil hydraulic motors on described oil pipe, having at least one to be middle part motor for driving rolling and brushing to sweep dish, having at least one to be that motor is swept in the side of sweeping dish for driving side.
The invention provides a kind of sweeper, comprise rolling and brushing sweep dish and side sweep dish, also comprise above-mentioned sweeper hydraulic system.
Hydraulic system provided by the invention, sweeper hydraulic system and have its sweeper, have the following advantages:
1. hydraulic system of the present invention, at least one oil pipe is set up between transport pipe and return tube, and at least two oil hydraulic motors of connecting on an oil pipe, when hydraulic oil container and gear pump work, only the hydraulic difference at oil pipe two ends need be made to meet the demands, the work requirements of the oil hydraulic motor be connected on this oil pipe can be met, compared with hydraulic system of the prior art, owing to decreasing the quantity to the branch road of return tube by transport pipe, thus correspondingly reduce the requirement to hydraulic oil container and gear pump, equipment cost reduces greatly.
2. hydraulic system of the present invention, described oil pipe has multiple dogleg section, multiple dogleg section forms multipair parallel pipe portion, between often pair of parallel pipe portion, an oil hydraulic motor is at least set, owing to arranging dogleg section, therefore, oil pipe size in the longitudinal direction can be saved, make system compacter; Between often pair of parallel pipe portion, a control switch is also set, described control switch is used in the series connection oil circuit of the oil hydraulic motor of its correspondence access oil pipe, or make this oil hydraulic motor not access in the series connection oil circuit of oil pipe, owing to being formed multipair parallel pipe portion by dogleg section, and whether get involved in the series connection oil circuit of oil pipe by the control switch oil hydraulic motor controlled between parallel tubes portion, thus the quantity of the oil hydraulic motor accessed can be selected as required, expand its Applicable scope, it is more convenient to use.
3. hydraulic system of the present invention, one of them control switch is the first control switch; When first interface and the second orifice, hydraulic oil enters oil pipe from transport pipe from filler opening, flows through the oil hydraulic motor between the parallel pipe portion that the first control switch is corresponding, this oil hydraulic motor is accessed in the series connection oil circuit of oil pipe and carries out work; When first interface and the 3rd orifice, hydraulic oil is from transport pipe, through middle part hydraulic fluid port input oil pipe, make above-mentioned oil hydraulic motor can not access in the series connection oil circuit of oil pipe, achieve the control whether oil hydraulic motor is accessed, further, very convenient by the mode switching on and off realization control between multiple interface.
4. hydraulic system of the present invention, described first control switch also comprises the 4th interface, first one-way valve and the second one-way valve, when first interface and the second orifice, 4th interface and the 3rd orifice, owing to being provided with the first one-way valve between the 3rd interface and middle part hydraulic fluid port, therefore the hydraulic oil be input in oil pipe from first interface can not flow back into return tube through the 3rd interface and the 4th interface, but when the hydraulic fluid pressure of hydraulic fluid port position, middle part is lower, part hydraulic oil can from return tube through the 4th interface, 3rd interface, first one-way valve and middle part hydraulic fluid port are input to the effect that replenisher force feed is played in oil pipe inside, when first interface and the 3rd orifice, 4th interface and the second orifice, at this moment the tubing section between oil pipe filler opening and the second one-way valve is communicated with return tube, hydraulic fluid pressure in this part oil pipe is reduced, to protect the oil hydraulic motor be series on this part oil pipe, avoid the oil hydraulic motor be positioned on this part oil pipe idle time, be also positioned at the damage caused under larger hydraulic fluid pressure.As a kind of improvement project, the second one-way valve is arranged near between the oil hydraulic motor of middle part hydraulic fluid port and middle part hydraulic fluid port, can protects like this at all hydraulic motor between the second one-way valve and oil pipe filler opening.
5. hydraulic system of the present invention; first interface neither with the second orifice; also time not with the 3rd orifice; second interface, the 3rd interface and the 4th orifice; thus when first interface is not oil pipe fuel feeding, the oil hydraulic motor between the second one-way valve and oil pipe filler opening also can be protected.
6. hydraulic system of the present invention, also comprise the stand by pump be arranged in parallel with oil hydraulic pump, when oil hydraulic pump quits work because of fault, stand by pump startup work is transport pipe fuel feeding, make hydraulic system of the present invention after oil hydraulic pump breaks down, stand by pump still can be used to control, transport maintenance back to facilitate.
7. sweeper of the present invention, owing to having above-mentioned hydraulic system, thus has the advantage described in above-mentioned any one.
Accompanying drawing explanation
In order to be illustrated more clearly in the technological scheme in prior art or the specific embodiment of the invention, the accompanying drawing used in describing prior art or embodiment is below briefly described, apparently, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of mode of execution of hydraulic system provided by the invention.
Fig. 2 is the structural representation of a kind of mode of execution of sweeper hydraulic system provided by the invention.
Fig. 3 is the schematic enlarged-scale view of part A in Fig. 2.
Reference character: 1-hydraulic oil container, 11-hydraulic oil inlet, 12-hydraulic oil outlet, 13-oil absorption filter, 14-ball valve, 15-liquid level relay, 16-air filter, 17-oil temperature oil level indicator, 2-oil hydraulic pump, 20-stand by pump, the import of 21-oil hydraulic pump, 22-hydraulic pump outlet, 3-transport pipe, 4-return tube, 5-oil pipe, hydraulic fluid port in the middle part of 51-, 6-oil hydraulic motor, motor in the middle part of 60-, the left oil hydraulic motor of 61-, the right oil hydraulic motor of 62-, sweep dish on the left of 610-and show oil cylinder, sweep dish on the right side of 620-and show oil cylinder, dish hoist cylinder is swept before 631-, dish hoist cylinder is swept after 632-, 7-first control switch, 71-first interface, 72-second interface, 73-the 3rd interface, 74-the 4th interface, 8-second control switch, 85-the 5th interface, 86-the 6th interface, 87-the 7th interface, 88-the 8th interface, 91-casing hoist cylinder, 92-sucker hoist cylinder, 93-back door oil cylinder, 101-unloading valve group, 102-series flow control valve group, 103-pressure gauge, 104-relief valve, valve group before 100-, valve group after 200-.
Embodiment
Be described technological scheme of the present invention below in conjunction with Figure of description, obviously, following embodiment is not the whole embodiment of the present invention.Based on embodiment described in the invention, those of ordinary skill in the art, not making the every other embodiment obtained under other creative work prerequisites, belong to protection scope of the present invention.
It should be noted that, in describing the invention, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance.In addition, if below in the described different mode of execution of the present invention involved technical characteristics do not form conflict each other and just can be combined with each other.
Embodiment 1
The present embodiment provides a kind of embodiment of hydraulic system, and as shown in Figure 1, described hydraulic system comprises:
Hydraulic oil container 1, for storing hydraulic oil, has hydraulic oil inlet 11 and hydraulic oil outlet 12;
Oil hydraulic pump 2, has oil hydraulic pump import 21 and hydraulic pump outlet 22, and described oil hydraulic pump import 21 is communicated with described hydraulic oil outlet 12 by pipeline;
Transport pipe 3, is communicated with described hydraulic pump outlet 22, for the hydraulic oil in hydraulic oil container 1 is supplied oil hydraulic motor 6;
Return tube 4, is communicated with described hydraulic oil inlet 11, for being recovered in hydraulic oil container 1 by the hydraulic oil in pipeline;
Oil pipe 5, is at least one, and its two ends are communicated with the filler opening of described return tube 4 with the oil outlet of described transport pipe 3 respectively;
Oil hydraulic motor 6, for multiple, wherein have at least two to be connected in series on same described oil pipe 5, running for driving hydraulic oil in pipeline.
Above-mentioned hydraulic system, at least one oil pipe 5 is set up between transport pipe 3 and return tube 4, and at least two oil hydraulic motors 6 of connecting on an oil pipe 5, when hydraulic oil container 1 works, because oil hydraulic motor is connected in series, only the hydraulic difference at oil pipe 5 two ends need be made to meet the demands, the work requirements of all hydraulic motor 6 be connected on this oil pipe 5 can be met, compared with the hydraulic system be arranged in parallel with oil hydraulic motor in prior art 6, when not needing to change power source speed, additionally need not increase the volume of hydraulic oil container, just can meet hydraulic difference when all hydraulic motor 6 works, reduce hydraulic oil container requirement, equipment cost reduces greatly.
As preferred embodiment, described oil pipe 5 has multiple dogleg section, multiple dogleg section forms multipair parallel pipe portion, between often pair of parallel pipe portion, an oil hydraulic motor is at least set, owing to arranging dogleg section, therefore, oil pipe size in the longitudinal direction can be saved, make system compacter; Between often pair of parallel pipe portion, a control switch is also set, described control switch is used in the series connection oil circuit of the oil hydraulic motor of its correspondence access oil pipe, or make this oil hydraulic motor not access in the series connection oil circuit of oil pipe, owing to being formed multipair parallel pipe portion by dogleg section, and whether get involved in the series connection oil circuit of oil pipe by the control switch oil hydraulic motor controlled between parallel tubes portion, thus the quantity of the oil hydraulic motor accessed can be selected as required, expand its Applicable scope, it is more convenient to use.
As preferred embodiment, as shown in Figure 1, the oil pipe 5 of described hydraulic system is one, its two ends are communicated with the filler opening of return tube 4 with the oil outlet of transport pipe 3 respectively, there are 5 described oil hydraulic motors 6, comprising two left oil hydraulic motors, 61, two right oil hydraulic motors 62, with a middle part motor 60, these 5 oil hydraulic motors are all connected on this oil pipe 5.
Above-mentioned hydraulic system, compared with prior art, decreases the branch road quantity from transport pipe 3s to return tube 4, and correspondingly reduce the requirement to hydraulic oil container 1 and oil hydraulic pump 2, thus equipment cost reduces greatly.
As preferred embodiment, one in above-mentioned control switch is the first control switch 7, with reference to Fig. 3, it is arranged between the filler opening of oil pipe 5 and the oil outlet of transport pipe 3, have and be communicated with first interface 71 with transport pipe 3, the second interface 72 be communicated with the filler opening of oil pipe 5, and the 3rd interface 73 to be communicated with the middle part hydraulic fluid port 51 of oil pipe 5, wherein middle part hydraulic fluid port 51 is being connected between on oil pipe 5 two adjacent oil hydraulic motors, between namely adjacent right oil hydraulic motor 62 and left oil hydraulic motor 61.
Described first control switch 7 has the first state that described first interface 71 is communicated with described second interface 72; Make the second state that described first interface 71 is communicated with described 3rd interface 73; Described first interface 71 is neither communicated with, the third state be not also communicated with described 3rd interface 73 with described second interface 72.
When described first control switch 7 is in the first state, hydraulic oil is from transport pipe 3s, along first interface 71, second interface 72 enters oil pipe 5, hydraulic oil order flows through two right oil hydraulic motors, 62, two left oil hydraulic motors 61, and after a middle part motor 60, flow back into return tube 4, all hydraulic motor be at this moment connected on oil pipe 5 all starts work.
When described first control switch 7 is in the second state, hydraulic oil is from transport pipe 3s, along first interface 71,3rd interface 73 enters oil pipe 5 from middle part hydraulic fluid port 51 position, after hydraulic oil order flows through two left oil hydraulic motors 61 and a middle part motor 60, flow back into return tube 4, two the right oil hydraulic motors 62 be at this moment connected on oil pipe 5 do not work, and two left oil hydraulic motors 61 and a middle part motor 60 start work.
When first control switch 7 is in the third state, the hydraulic oil in transport pipe 3 cannot enter into oil pipe 5, and all hydraulic motor be connected on oil pipe 5 all quits work.
As preferred embodiment, first control switch 7 is also provided with the 4th interface 74, and the 4th interface 74 is communicated with return tube 4, the pipeline of connection the 3rd interface 73 and middle part hydraulic fluid port 51 is provided with the first one-way valve 701, and it is towards the direction one-way conduction of middle part hydraulic fluid port 51; Pipeline between the filler opening and middle part hydraulic fluid port 51 of oil pipe 5 is provided with the second one-way valve 702, and it is towards the direction one-way conduction of middle part hydraulic fluid port 51.
When first interface 71 is communicated with the second interface 72,4th interface 74 is communicated with the 3rd interface 73, owing to being provided with the first one-way valve 701 between the 3rd interface 73 and middle part hydraulic fluid port 51, therefore the hydraulic oil be input in oil pipe 5 from first interface 71 can not flow back into return tube 4 through the 3rd interface 73 and the 4th interface 74, but when the hydraulic fluid pressure of middle part hydraulic fluid port 51 position is lower, a part of hydraulic oil can be input to through the 4th interface 74, the 3rd interface 73, first one-way valve 701 and middle part hydraulic fluid port 51 effect that replenisher force feed is played in oil pipe inside from return tube 4.
When first interface 71 is communicated with the 3rd opening 73; 4th interface 74 is communicated with the second interface 72; at this moment the tubing section between oil pipe 5 filler opening and the second one-way valve 702 is communicated with return tube 4; hydraulic fluid pressure in this part oil pipe is reduced; to protect the oil hydraulic motor 6 be series on this part oil pipe 5, avoid the oil hydraulic motor 6 be positioned on this part oil pipe 5 idle time, be also positioned at the damage caused under larger hydraulic fluid pressure.
As one preferred embodiment, the second one-way valve 702 is arranged near between the oil hydraulic motor 6 (i.e. right oil hydraulic motor 62) of middle part hydraulic fluid port 51 and middle part hydraulic fluid port 51.
As preferred embodiment, one in described control switch is the second control switch 8, described second control switch 8 is arranged in the pair of parallel pipe portion in hydraulic fluid port 51 downstream, middle part, this is to two left oil hydraulic motors 61 of connecting between parallel pipe portion, described second control switch 8 has the 5th interface 85, the 6th interface 86, the 7th interface 87 and the 8th interface 88, wherein, 5th interface 85 and the 7th interface 87 are positioned in the pipe portion of the same side, and the 6th interface 86 is positioned in the pipe portion parallel with this side pipe portion with the 8th interface 88.When the 5th interface 85 and the 7th interface 87 are connected, and when the 6th interface 86 and the 8th interface 88 are connected, come from the hydraulic oil of oil pipe 5 upstream through two left oil hydraulic motors 61, these two left oil hydraulic motors 61 access in the series connection oil circuit of oil pipe; When the 5th interface 85 and the 6th interface 86 are connected, come from the hydraulic oil of oil pipe 5 upstream without two left oil hydraulic motors 61, these two left oil hydraulic motors 61 do not access in the series connection oil circuit of oil pipe.
Same reason, one in described control switch is the 3rd control switch, for control middle part motor 60 whether access in the series connection oil circuit of oil pipe 5, principle and the second control switch 8 similar, repeat no more.
As preferred embodiment, above-mentioned control switch is magnetic switch, by electric and dead electricity to switch between each state.
It should be noted that, above-mentioned hydraulic system can be sweeper hydraulic system, also can be the hydraulic system of the multiple oil hydraulic motor of other similar needs.Further, owing to arranging above-mentioned first control switch 7 and the second control switch 8, the quantity of the oil hydraulic motor 6 be connected in series on oil pipe 5 can be controlled, thus there is larger applicability.
Embodiment 2
The present embodiment provides a kind of sweeper hydraulic system, and this sweeper hydraulic system is a kind of embody rule of the hydraulic system provided in embodiment 1, and as shown in Figures 2 and 3, this sweeper hydraulic system comprises:
Hydraulic oil container 1, for storing hydraulic oil, has hydraulic oil inlet 11 and hydraulic oil outlet 12;
Oil hydraulic pump 2, has oil hydraulic pump import 21 and hydraulic pump outlet 22, and described oil hydraulic pump import 21 is communicated with described hydraulic oil outlet 12 by pipeline;
Transport pipe 3, is communicated with described hydraulic pump outlet 22, for the hydraulic oil in hydraulic oil container 1 is supplied oil hydraulic motor 6;
Return tube 4, is communicated with described hydraulic oil inlet 11, for being recovered in hydraulic oil container 1 by the hydraulic oil in pipeline;
Oil pipe 5 is one, and its two ends are communicated with the filler opening of described return tube 4 with the oil outlet of described transport pipe 3 respectively;
Oil hydraulic motor 6, being 5, being all connected in series on same described oil pipe 5, comprising two left oil hydraulic motors 61 for driving side, left side to sweep dish, two right oil hydraulic motors 62 for driving side, right side to sweep dish, and a middle part motor 60 for driving rolling and brushing to sweep dish.
Above-mentioned sweeper hydraulic system, sets up at least one oil pipe 5 between transport pipe 3 and return tube 4, and 5 oil hydraulic motors 6 of connecting on an oil pipe 5, is respectively used to driving side and sweeps dish and dish is swept in rolling and brushing, thus can carry out rolling and brushing to rubbish and side is swept; When hydraulic oil container 1 works, because oil hydraulic motor is connected in series, only the hydraulic difference at oil pipe 5 two ends need be made to meet the demands, the work requirements of all hydraulic motor 6 be connected on this oil pipe 5 can be met, compared with the hydraulic system be arranged in parallel with oil hydraulic motor in prior art 6, when not needing to change power source speed, additionally need not increase the volume of hydraulic oil container, just can meet hydraulic difference when all hydraulic motor 6 works, reduce hydraulic oil container requirement, equipment cost reduces greatly.
As preferred embodiment, as shown in Figure 2, above-mentioned hydraulic system also comprises stand by pump 20, and itself and oil hydraulic pump 20 are arranged in parallel, and when oil hydraulic pump 2 cannot use because of fault, people can start stand by pump 20 and replace oil hydraulic pump 20 to work.
As preferred embodiment, on from hydraulic oil inlet 11s to the pipeline of oil hydraulic pump import 21, be disposed with oil absorption filter 13 and ball valve 14, oil absorption filter is used for filtering hydraulic oil, and ball valve 14 is for controlling the break-make of oil circuit between hydraulic oil container 1 to oil hydraulic pump 2.
On from hydraulic oil inlet 11s to the oil circuit of oil absorption filter 13, be also disposed with liquid level relay 15, air filter 16 and oil temperature oil level indicator 17.Oil circuit between return tube 4 and the hydraulic oil inlet 11 of hydraulic oil container 1 is also provided with return filter, for filtering hydraulic oil.
As preferred embodiment, above-mentioned hydraulic system also comprises valve group, and described valve group comprises front valve group 100 and rear valve group 200.Wherein front valve group 100 for controlling to sweep the showing of dish, to be elevated and oil hydraulic motor rotates, rear valve group 200 is for controlling sucker lifting, casing lifting and back door opening and closing.
Sweep dish on the left of front valve group 100 comprises and show oil cylinder 610, right side is swept dish and is shown oil cylinder 620, before sweep dish hoist cylinder 631 and after sweep dish hoist cylinder 632, it is all connected in parallel between transport pipe 3 and return tube 4 by bidirectional hydraulic lock and magnetic switch, controlled by the cooperation of magnetic switch and bidirectional hydraulic lock, left side is shown oil cylinder 610 and is controlled left front and sweep showing and withdrawal of dish, right side is shown oil cylinder 620 and is controlled right front and sweep showing and withdrawal of dish, before sweep dish hoist cylinder 631 control the lifting that dish (left front and right front) is swept in two, front, after sweep dish hoist cylinder 632 control the lifting that dish is swept at two, rear.
Front valve group 100 also comprises unloading valve group 101, it is arranged between transport pipe 3 and return tube 4, when unloading valve group 101 is in connected state, and transport pipe 3 and return tube 4 short circuit, now hydraulic system is in unloading condition, and the intrasystem equipment of transport pipe 3 fuel feeding that needs all does not work; When unloading valve group 101 is in off state, transport pipe 3 and return tube 4 do not have short circuit herein, and now hydraulic system is in load condition, need the equipment work of transport pipe 3 fuel feeding in system.
Front valve group 100 also comprises series flow control valve group 102, and it is arranged between transport pipe 3 and return tube 4, and it, by regulating by the amount of transport pipe 3 to the hydraulic oil of return tube 4, regulates the hydraulic pressure oil mass of transport pipe 3 inside.
Front valve group 100 also comprises the relief valve 104 be communicated with transport pipe 3, and section hydraulic oil spill when the pressure of transport pipe 3 is excessive, can goes out, thus avoid the overpressure in relief valve 104 by it.Pressure gauge 103 is communicated with transport pipe 3, for identifying pressure size.
Rear valve group 200 comprises casing hoist cylinder 91, sucker hoist cylinder 92 and back door oil cylinder 93, and three is all connected in parallel between transport pipe 3 and return tube 4 by bidirectional hydraulic lock and magnetic switch, wherein casing hoist cylinder 91 controls the lifting of the casing being used for load garbage, sucker hoist cylinder 92 controls the lifting of sucker, and back door oil cylinder 93 is for controlling opening or closing of case rear door.
Embodiment 3
The present embodiment provides a kind of sweeper, and it comprises hydraulic system, along sweeper direct of travel, dish is swept in two left sides be positioned on the left of sweeper, and dish is swept on two right sides be positioned on the right side of sweeper, and dish is swept in the rolling and brushing be positioned at bottom sweeper.Wherein, described hydraulic system is the hydraulic system of any one mode of execution recorded in embodiment 1 or embodiment 2.
Owing to having above-mentioned hydraulic system, thus there is the advantage described in above-mentioned any one.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to mode of execution.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all mode of executions.And thus the apparent change of extending out or variation be still among the protection domain of the invention.
Claims (10)
1. a hydraulic system, comprising:
Hydraulic oil container (1), has hydraulic oil inlet (11) and hydraulic oil outlet (12);
Oil hydraulic pump (2), has oil hydraulic pump import (21) and hydraulic pump outlet (22), and described oil hydraulic pump import (21) is communicated with described hydraulic oil outlet (12) by pipeline;
Transport pipe (3), is communicated with described hydraulic pump outlet (22);
Return tube (4), is communicated with described hydraulic oil inlet (11);
It is characterized in that: also comprise:
Oil pipe (5), is at least one, and its two ends are communicated with the filler opening of described return tube (4) with the oil outlet of described transport pipe (3) respectively;
Oil hydraulic motor (6), for multiple, wherein has at least two to be connected in series on same described oil pipe (5).
2. hydraulic system according to claim 1, is characterized in that:
Described oil pipe (5) has multiple dogleg section, multiple dogleg section forms multipair parallel pipe portion, between often pair of parallel pipe portion, an oil hydraulic motor (6) is at least set, between often pair of parallel pipe portion, a control switch is also set, described control switch is used in the series connection oil circuit of the oil hydraulic motor (6) of its correspondence access oil pipe (5), or this oil hydraulic motor (6) is not accessed in the series connection oil circuit of oil pipe (5).
3. hydraulic system according to claim 2, is characterized in that: one of them control switch is the first control switch (7), and described first control switch (7) has:
First interface (71), is communicated with the oil outlet of described transport pipe (3);
Second interface (72), is communicated with the filler opening of described oil pipe (5);
3rd interface (73), be communicated with the middle part hydraulic fluid port (51) of described oil pipe (5), described middle part hydraulic fluid port (51) is positioned between the adjacent oil hydraulic motor (6) of at least two of being connected on described oil pipe (5);
Described first control switch (7) has the first state that described first interface (71) is communicated with described second interface (72), with the second state making described first interface (71) be communicated with described 3rd interface (73).
4. hydraulic system according to claim 3, is characterized in that: described first control switch (7) also comprises:
4th interface (74), is communicated with the filler opening of described return tube (4);
First one-way valve (701), is arranged on the pipeline at described 3rd interface (73) of connection and described middle part hydraulic fluid port (51), and can towards the direction one-way conduction at described middle part hydraulic fluid port (51);
Second one-way valve (702), is arranged on the pipeline between the filler opening of described oil pipe (5) and described middle part hydraulic fluid port (51), and can towards the direction one-way conduction at described middle part hydraulic fluid port (51);
When described first interface (71) is communicated with described second interface (72), described 4th interface (74) is communicated with described 3rd interface (73);
When described first interface (71) is communicated with described 3rd opening (73), described 4th interface (74) is communicated with described second interface (72).
5. hydraulic system according to claim 4, is characterized in that:
Described first control switch (7) also has makes described first interface (71) neither be communicated with described second interface (72), the third state be not also communicated with described 3rd interface (73);
Described first interface (71) is neither communicated with described second interface (72), when not also being communicated with described 3rd interface (73), described second interface (72), described 3rd interface (73) and described 4th interface (74) are communicated with.
6. the hydraulic system according to claim 4 or 5, is characterized in that: described second one-way valve (702) is arranged near between the described oil hydraulic motor (6) at described middle part hydraulic fluid port (51) and described middle part hydraulic fluid port (51).
7. the hydraulic system according to any one of claim 1-4, it is characterized in that: from described hydraulic oil inlet, (11)s, on the pipeline of described oil hydraulic pump import (21), were disposed with oil absorption filter (13) and ball valve (14).
8. hydraulic system according to claim 7, it is characterized in that: from described hydraulic oil inlet, (11)s are on the oil circuit of described oil absorption filter (13), also be disposed with liquid level relay (15), air filter (16) and oil temperature oil level indicator (17); Oil circuit between described return tube (4) and the hydraulic oil inlet (11) of described hydraulic oil container (1) is also provided with return filter, for filtering hydraulic oil.
9. a sweeper hydraulic system, it is characterized in that: the hydraulic system according to any one of claim 1-8, wherein, be connected at least two oil hydraulic motors on described oil pipe (5), having at least one to be middle part motor (60) for driving rolling and brushing to sweep dish, having at least one to be that motor is swept in the side of sweeping dish for driving side.
10. a sweeper, comprise rolling and brushing sweep dish and side sweep dish, it is characterized in that: also comprise the sweeper hydraulic system described in claim 9.
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| CN201510886171.3A CN105422526A (en) | 2015-12-04 | 2015-12-04 | Hydraulic system, motor sweeper hydraulic system and motor sweeper with motor sweeper hydraulic system |
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| CN201510886171.3A CN105422526A (en) | 2015-12-04 | 2015-12-04 | Hydraulic system, motor sweeper hydraulic system and motor sweeper with motor sweeper hydraulic system |
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| CN201510886171.3A Pending CN105422526A (en) | 2015-12-04 | 2015-12-04 | Hydraulic system, motor sweeper hydraulic system and motor sweeper with motor sweeper hydraulic system |
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| CN106527328A (en) * | 2017-01-12 | 2017-03-22 | 上海闸环北站环境卫生工程有限公司 | Sanitation vehicle and operation equipment intelligent management system |
| CN106593981A (en) * | 2016-12-15 | 2017-04-26 | 北汽福田汽车股份有限公司 | Sweeping plate lifting hydraulic system, sweeping machine hydraulic system and sweeping machine |
| CN107120322A (en) * | 2017-06-19 | 2017-09-01 | 徐州徐工环境技术有限公司 | sweeper hydraulic control system and control method |
| CN109441900A (en) * | 2018-12-10 | 2019-03-08 | 扬州盛达特种车有限公司 | A kind of energy-saving hydraulic system of pavement cleaning vehicle |
| CN110112532A (en) * | 2019-05-06 | 2019-08-09 | 中国电子科技集团公司第三十八研究所 | A kind of convertible antenna synchronous expansion system and control method |
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Effective date of registration: 20161024 Address after: 410129 Changsha County economic and Technological Development Zone, Changsha, Hunan, Changsha Applicant after: Changsha Foton Automobile Technology Co., Ltd. Address before: 102206 Changping District City, Shahe, Sha Yang Road, Beijing Applicant before: Beiqi Futian Automobile Co., Ltd. Applicant before: Changsha Foton Automobile Technology Co., Ltd. |
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Application publication date: 20160323 |