CN202323835U - Hydraulic system and multifunctional maintenance truck working device - Google Patents
Hydraulic system and multifunctional maintenance truck working device Download PDFInfo
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- CN202323835U CN202323835U CN2011204713565U CN201120471356U CN202323835U CN 202323835 U CN202323835 U CN 202323835U CN 2011204713565 U CN2011204713565 U CN 2011204713565U CN 201120471356 U CN201120471356 U CN 201120471356U CN 202323835 U CN202323835 U CN 202323835U
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Abstract
The utility model discloses a hydraulic system and a multifunctional maintenance truck working device. The hydraulic system comprises a crossbeam telescoping loop, a vertical beam upward-overturning loop, a vertical beam downward-overturning loop, a vertical beam telescoping loop, an outer support overturning loop, an outside motor group loop, an inside motor group loop, a first oil unloading loop and a second oil unloading loop. The multifunctional maintenance truck working device adopting the hydraulic system comprises a connecting plate, a crossbeam, a vertical beam, an outer bracket, an inner bracket, a first brushing disc and a second brushing disc. The hydraulic system and the multifunctional maintenance truck working device disclosed by the utility model have the advantages of simple structure, reasonable design, simpleness and convenience for operation and control, high working reliability, good operability, convenience for maintenance, low cost, long service life, wide using range and capabilities of meeting the washing requirement of urban partition fences and pruning and shaping requirements of highway green fences and gardens and realizing operation functions of multiple degrees of freedom and different properties.
Description
Technical field
The utility model relates to a kind of vehicle operation device and hydraulic system, especially relates to a kind of hydraulic system and the multi-functional equipment of caring the car.
Background technology
Fast development along with urban road and speedway; The area of the quantity of city isolated column and speedway hedgerow, afforestation all increases day by day; And adopt conventional artificial to clean and trim mode; Be difficult to reach quick, high-quality cleaning and pruned effect, the work safety to operating personnel also is difficult to ensure simultaneously, can't satisfy moulding and the quality requirement of people to city isolated column cleaning performance requirement and hedgerow, lawn.
Although also there is the highway maintenance car in the prior art, complex structure, design is unreasonable and function is limited, promptly or can only realize the cleaning to isolated column, or can only realize pruning that hedgerow, gardens are pruned; Especially the hydraulic system of these highway maintenance cars employings controls inconvenience, can not realize multiple degrees of freedom action and operation function of different nature.For this reason, the highway maintenance equipment and the hydraulic system that provide a kind of simple in structure, multiple functional and easy to operate special use to integrate city isolated column cleaning and highway hedgerow, gardens pruning and moulding are very necessary.
The utility model content
The purpose of the utility model is to overcome above-mentioned deficiency of the prior art, and a kind of hydraulic system and the multi-functional equipment of caring the car are provided, and it is simple in structure, reasonable in design and control easy; Can satisfy cleaning requirement and the highway hedgerow of city isolated column, the pruning and the moulding job requirements in gardens, and can realize multiple degrees of freedom action and heterogeneity operation function, simultaneously the functional reliability height; Good operability is convenient to maintenance, and cost is low; Long service life, the scope of application is wide.
For realizing above-mentioned purpose; The technical scheme that the utility model adopts is: a kind of hydraulic system; It is characterized in that: comprising that crossbeam stretches overturns that upset loop, the flexible loop of vertical beam, support arm upset loop, groups of motors loop, the outside, inboard groups of motors loop and first are unloaded oil return line and second and unloaded oil return line down for loop, vertical beam on loop, the vertical beam; Pair vane pump is connected with the crossbeam telescopic oil cylinder with first multiple directional control valve, first liang of position switching valve successively in the flexible loop of said crossbeam; Overturning oil cylinder is connected successively on pair vane pump and second multiple directional control valve in the upset loop on the said vertical beam, second liang of position switching valve and the vertical beam, and said vertical beam overturns down, and overturning oil cylinder is connected successively on pair vane pump and the 3rd multiple directional control valve in the loop, the 3rd liang of position switching valve and the vertical beam; Pair vane pump is connected with the vertical beam telescopic oil cylinder with the 4th multiple directional control valve successively in the flexible loop of said vertical beam, and pair vane pump is connected with the support arm overturning oil cylinder with the 5th multiple directional control valve successively in the said support arm upset loop; Pair vane pump is connected with the outboard gears groups of motors with the 6th multiple directional control valve successively in the groups of motors loop, the said outside, and pair vane pump is connected with the inboard gear groups of motors with the 7th multiple directional control valve successively in the said inboard groups of motors loop; Said first unload pair vane pump in the oil return line second vane pump be connected with the 4th liang of position switching valve, said second unload pair vane pump in the oil return line first vane pump be connected with the 5th liang of position switching valve; Said crossbeam stretches and overturns that upset loop, the flexible loop of vertical beam, support arm upset loop, groups of motors loop, the outside, inboard groups of motors loop and first are unloaded oil return line and second and unloaded oil return line and all be connected with fuel tank down for loop, vertical beam on loop, the vertical beam.
Above-mentioned a kind of hydraulic system is characterized in that: be connected with first overflow valve between said second vane pump and the 4th liang of position switching valve, be connected with second overflow valve between said first vane pump and the 5th liang of position switching valve.
Above-mentioned a kind of hydraulic system; It is characterized in that: said outside groups of motors is made up of first outside motor, second outside motor and the 3rd outside motor three parts of series connection connection successively, and said inboard groups of motors is made up of the first inboard motor, the second inboard motor and the 3rd inboard motor three parts of series connection connection successively; Said first outside motor, second outside motor, the 3rd outside motor, the first inboard motor, the second inboard motor and the 3rd inboard motor are bidirectional geared motor.
Above-mentioned a kind of hydraulic system; It is characterized in that: be connected with first overflow valve and second overflow valve between the oil-in of said first outside motor and the oil-out; The oil-in of said first overflow valve is connected with the oil-out of first outside motor; The oil-out of said first overflow valve is connected with the oil-in of first outside motor, and the oil-in of said second overflow valve is connected with the oil-in of first outside motor, and the oil-out of said second overflow valve is connected with the oil-out of first outside motor; Be connected with the 3rd overflow valve and the 4th overflow valve between the oil-in of said second outside motor and the oil-out; The oil-in of said the 3rd overflow valve is connected with the oil-out of second outside motor; The oil-out of said the 3rd overflow valve is connected with the oil-in of second outside motor; The oil-in of said the 4th overflow valve is connected with the oil-in of second outside motor, and the oil-out of said the 4th overflow valve is connected with the oil-out of second outside motor; Be connected with the 5th overflow valve and the 6th overflow valve between the oil-in of said the 3rd outside motor and the oil-out; The oil-in of said the 5th overflow valve is connected with the oil-out of the 3rd outside motor; The oil-out of said the 5th overflow valve is connected with the oil-in of the 3rd outside motor; The oil-in of said the 6th overflow valve is connected with the oil-in of the 3rd outside motor, and the oil-out of said the 6th overflow valve is connected with the oil-out of the 3rd outside motor.
Above-mentioned a kind of hydraulic system; It is characterized in that: be connected with the 7th overflow valve and the 8th overflow valve between the oil-in of the said first inboard motor and the oil-out; The oil-in of said the 7th overflow valve is connected with the oil-out of the first inboard motor; The oil-out of said the 7th overflow valve is connected with the oil-in of the first inboard motor, and the oil-in of said the 8th overflow valve is connected with the oil-in of the first inboard motor, and the oil-out of said the 8th overflow valve is connected with the oil-out of the first inboard motor; Be connected with the 9th overflow valve and the tenth overflow valve between the oil-in of the said second inboard motor and the oil-out; The oil-in of said the 9th overflow valve is connected with the oil-out of the second inboard motor; The oil-out of said the 9th overflow valve is connected with the oil-in of the second inboard motor; The oil-in of said the tenth overflow valve is connected with the oil-in of the second inboard motor, and the oil-out of said the tenth overflow valve is connected with the oil-out of the second inboard motor; Be connected with the 11 overflow valve and the 12 overflow valve between the oil-in of said the 3rd inboard motor and the oil-out; The oil-in of said the 11 overflow valve is connected with the oil-out of the 3rd inboard motor; The oil-out of said the 11 overflow valve is connected with the oil-in of the 3rd inboard motor; The oil-in of said the 12 overflow valve is connected with the oil-in of the 3rd inboard motor, and the oil-out of said the 12 overflow valve is connected with the oil-out of the 3rd inboard motor.
Above-mentioned a kind of hydraulic system; It is characterized in that: on the said vertical beam overturning oil cylinder on hydraulic fluid port, be respectively arranged with the first unidirectional adjustable throttling and the second unidirectional adjustable throttling, the said first unidirectional adjustable throttling and the second unidirectional adjustable throttling are all between the overturning oil cylinder on the vertical beam and second multiple directional control valve; Under the said vertical beam overturning oil cylinder on hydraulic fluid port, be respectively arranged with the 3rd unidirectional adjustable throttling and the 4th unidirectional adjustable throttling, the said the 3rd unidirectional adjustable throttling and the 4th unidirectional adjustable throttling are all between overturning oil cylinder on the vertical beam and the 3rd multiple directional control valve; Said vertical beam telescopic oil cylinder on hydraulic fluid port, be respectively arranged with the 5th unidirectional adjustable throttling and the 6th unidirectional adjustable throttling, the said the 5th unidirectional adjustable throttling and the 6th unidirectional adjustable throttling are all between vertical beam telescopic oil cylinder and the 4th multiple directional control valve; Said support arm overturning oil cylinder on hydraulic fluid port, be respectively arranged with the 7th unidirectional adjustable throttling and the 8th unidirectional adjustable throttling, the said the 7th unidirectional adjustable throttling and the 8th unidirectional adjustable throttling are all between support arm overturning oil cylinder and the 5th multiple directional control valve.
Above-mentioned a kind of hydraulic system; It is characterized in that: overturning oil cylinder is provided with first bidirectional hydraulic lock into and out of hydraulic fluid port on the said vertical beam; Overturning oil cylinder is provided with second bidirectional hydraulic lock into and out of hydraulic fluid port under the said vertical beam; Said vertical beam telescopic oil cylinder be provided with the 3rd bidirectional hydraulic lock into and out of hydraulic fluid port, said support arm overturning oil cylinder be provided with the 4th bidirectional hydraulic lock into and out of hydraulic fluid port.
Above-mentioned a kind of hydraulic system; It is characterized in that: the rodless cavity oil port of said crossbeam telescopic oil cylinder is provided with first adjustable throttling; Be provided with second adjustable throttling between said first outside motor and the 6th multiple directional control valve, be provided with the 3rd adjustable throttling between the said first inboard motor and the 7th multiple directional control valve.
Above-mentioned a kind of hydraulic system is characterized in that: also be connected with oil-feed oil filter and oil return oil filter on the said fuel tank; Be connected with unidirectional oil filter between said first vane pump and second overflow valve, be connected with one way valve between said unidirectional oil filter and the 4th liang of position switching valve.
The utility model also provides a kind of multi-functional equipment of caring the car that adopts above-mentioned hydraulic system; It is characterized in that this equipment of caring the car comprises junction plate, crossbeam, vertical beam, support arm, inner support, the first brush dish and the second brush dish; Said junction plate is installed in the rear end of crossbeam; Said vertical beam is made up of vertically disposed sleeve pipe and horizontally disposed galianconism two parts; Said sleeve pipe is fixedly connected with galianconism, and the end of said sleeve pipe and the front end of crossbeam are hinged, and the end and the support arm of said galianconism are hinged; Overturning oil cylinder is installed in crossbeam top on the said vertical beam; Overturning oil cylinder is installed in the crossbeam bottom under the said vertical beam; Said crossbeam telescopic oil cylinder is installed in the crossbeam; The piston rod end of said crossbeam telescopic oil cylinder is hinged with first quadric chain that is used to realize the vertical beam flip-flop movement, said first quadric chain also with vertical beam under overturning oil cylinder and the vertical beam piston rod end and the sleeve pipe of overturning oil cylinder all hinged; Said vertical beam telescopic oil cylinder is installed in the said sleeve pipe; Said support arm overturning oil cylinder is installed on the said galianconism; The piston rod end of said support arm overturning oil cylinder is hinged with second quadric chain that is used to realize the support arm flip-flop movement, and said second quadric chain is also all hinged with said galianconism and support arm; The said first inboard motor, the second inboard motor and the 3rd inboard motor are installed on the inner support, and said inner support is connected with said sleeve pipe, and the said first inboard motor, the second inboard motor and the 3rd inboard motor all are connected with the second brush dish; Said first outside motor, second outside motor and the 3rd outside motor are installed on the support arm, and said first outside motor, second outside motor and the 3rd outside motor all are connected with the first brush dish.
The utility model compared with prior art has the following advantages:
1, simple in structure, reasonable in design and control easy.
2, can satisfy cleaning requirement and the highway hedgerow of city isolated column, the pruning and the simple moulding job requirements in gardens, adopt the mode of upset and telescopic moving combination, can realize that multiple degrees of freedom moves and operation function of different nature.
3, reliability is high, and good operability is convenient to maintenance, and cost is low, long service life.
4, function is many, and the scope of application is wide, only need on equipment basic structure, change brush dish or cutterhead, just can realize that the road isolated column cleans and city hedge trimming function.
5, can realize the different working modes of crossbeam expanding-contracting action, on the flexible oil circuit of crossbeam, be provided with one two position switching valve and the multiple directional control valve with " Y " type meta function, the combination of the two has realized expanding-contracting action, locking and the float function of crossbeam.
6, solved the interference problem of multi-cylinder action; The oil inlet and outlet of overturning oil cylinder and following overturning oil cylinder is provided with solenoid operated directional valve respectively and carries out off-load on vertical beam; Through the interlocking of electromagnet two oil cylinders in control circuit, realized cylinder force action, another oil cylinder is in quick condition.
7, two-way series connection hydraulic motor group can adapt to the reliably working of multiple variable load operating mode, at the oil inlet and outlet of each hydraulic motor overflow valve is set, and makes under the single-motor overload situations, does not influence the normal operation of other motors.
8, hydraulic oil source can be realized the powershift of different operating modes, has adopted the pair vane pump fuel feeding, and a delivery side of pump is provided with unloader (solenoid operated directional valve) separately therein, realizes that the flow system flow of different operating modes switches.
Through accompanying drawing and embodiment, the utility model is done further detailed description below.
Description of drawings
Fig. 1 is the structural representation of the multi-functional equipment of caring the car of the utility model.
Fig. 2 is the structural representation of the utility model hydraulic system.
Description of reference numerals:
The 1-junction plate; The 2-crossbeam; The 3-vertical beam;
The 4-support arm; The 5-inner support; The 6-1-first brush dish;
The 6-2-second brush dish; 7-crossbeam telescopic oil cylinder; Overturning oil cylinder on the 8-vertical beam;
Overturning oil cylinder under the 9-vertical beam; 10-vertical beam telescopic oil cylinder; 11-support arm overturning oil cylinder;
12-1-first outside motor; 12-2-second outside motor; 12-3-the 3rd outside motor;
The 13-1-first inboard motor; The 13-2-second inboard motor; 13-3-the 3rd inboard motor;
The 14-fuel tank; 15-1-oil-feed oil filter; 15-2-oil return oil filter;
The unidirectional oil filter of 16-; 17-1-first vane pump; 17-2-second vane pump;
The 4th liang of position switching valve of 18-; The 5th liang of position switching valve of 19-; 20-the 7th multiple directional control valve;
21-the 6th multiple directional control valve; 22-the 5th multiple directional control valve; 23-the 4th multiple directional control valve;
24-the 3rd multiple directional control valve; 25-second multiple directional control valve; 26-first multiple directional control valve;
First liang of position switching valve of 27-; Second liang of position switching valve of 28-; The 3rd liang of position switching valve of 29-;
30-first adjustable throttling; The 31-1-first unidirectional adjustable throttling;
The 31-2-second unidirectional adjustable throttling; 32-1-the 3rd unidirectional adjustable throttling;
32-2-the 4th unidirectional adjustable throttling; 33-1-the 5th unidirectional adjustable throttling;
33-2-the 6th unidirectional adjustable throttling; 34-1-the 7th unidirectional adjustable throttling;
34-2-the 8th unidirectional adjustable throttling; 35-second adjustable throttling;
36-the 3rd adjustable throttling; 37-second overflow valve; 38-1-first overflow valve;
38-2-second overflow valve; 38-3-the 3rd overflow valve; 38-4-the 4th overflow valve;
38-5-the 5th overflow valve; 38-6-the 6th overflow valve; 39-1-the 7th overflow valve;
39-2-the 8th overflow valve; 39-3-the 9th overflow valve; 39-4-the tenth overflow valve;
39-5-the 11 overflow valve; 39-6-the 12 overflow valve; 40-first bidirectional hydraulic lock;
41-second bidirectional hydraulic lock; 42-the 3rd bidirectional hydraulic lock; 43-the 4th bidirectional hydraulic lock;
44-first overflow valve; The 45-one way valve; 46-first quadric chain;
47-second quadric chain.
The specific embodiment
As depicted in figs. 1 and 2; A kind of hydraulic system; Comprising that crossbeam stretches overturns that upset loop, the flexible loop of vertical beam, support arm upset loop, groups of motors loop, the outside, inboard groups of motors loop and first are unloaded oil return line and second and unloaded oil return line down for loop, vertical beam on loop, the vertical beam; Pair vane pump is connected with crossbeam telescopic oil cylinder 7 with first multiple directional control valve 26, first liang of position switching valve 27 successively in the flexible loop of said crossbeam; Overturning oil cylinder 8 is connected successively on pair vane pump and second multiple directional control valve 25 in the upset loop on the said vertical beam, second liang of position switching valve 28 and the vertical beam, and said vertical beam time overturns in the loop, and overturning oil cylinder 9 is connected successively on pair vane pump and the 3rd multiple directional control valve 24, the 3rd liang of position switching valve 29 and the vertical beam; Pair vane pump is connected with vertical beam telescopic oil cylinder 10 with the 4th multiple directional control valve 23 successively in the flexible loop of said vertical beam, and pair vane pump is connected with support arm overturning oil cylinder 11 with the 5th multiple directional control valve 22 successively in the said support arm upset loop; Pair vane pump is connected with outboard gears groups of motors 12 with the 6th multiple directional control valve 21 successively in the groups of motors loop, the said outside, and pair vane pump is connected with inboard gear groups of motors 13 with the 7th multiple directional control valve 20 successively in the said inboard groups of motors loop; Said first unload pair vane pump in the oil return line the second vane pump 17-2 be connected with the 4th liang of position switching valve 18, said second unload pair vane pump in the oil return line the first vane pump 17-1 be connected with the 5th liang of position switching valve 19; Said crossbeam stretches and overturns that upset loop, the flexible loop of vertical beam, support arm upset loop, groups of motors loop, the outside, inboard groups of motors loop and first are unloaded oil return line and second and unloaded oil return line and all be connected with fuel tank 14 down for loop, vertical beam on loop, the vertical beam.In the present embodiment, the float function when horizontal Telescopic and the guardrail that the flexible loop of crossbeam is used to accomplish crossbeam (equipment) 2 cleans operating mode; Upset loop and vertical beam is used to realize the turn over function of vertical beam 3 in the upset loop down on the vertical beam, and guarantees on the vertical beam on the overturning oil cylinder 8 and vertical beam that in 9 two oil cylinders of overturning oil cylinder, if one of them oil cylinder is done the time spent, then another oil cylinder is in quick condition; The flexible loop of vertical beam is used to realize the elevating function of vertical beam (equipment) 3; Support arm upset loop is used to realize the rotary movement of support arm 4; Groups of motors loop, the outside and inboard groups of motors loop are used to realize the rotating function of the first brush dish 6-1 and the second brush dish 6-2; First unloads the handoff functionality that the 4th liang of position switching valve 18 in the oil return line is used to realize different motor rotary speeds, and second unloads the unloading function that the 5th liang of position switching valve 19 in the oil return line is used to realize pair vane pump.
As shown in Figure 2, be connected with first overflow valve 44 between the said second vane pump 17-2 and the 4th liang of position switching valve 18, be connected with second overflow valve 37 between the said first vane pump 17-1 and the 5th liang of position switching valve 19; First overflow valve 44 and second overflow valve 37 all play overload protection and limit system oil pressure.
As depicted in figs. 1 and 2; Said outside groups of motors is made up of first outside motor 12-1, second outside motor 12-2 and the 3rd outside motor 12-3 three parts of series connection connection successively, and said inboard groups of motors is made up of the first inboard motor 13-1, the second inboard motor 13-2 and the 3rd inboard motor 13-3 three parts of series connection connection successively; Said first outside motor 12-1, second outside motor 12-2, the 3rd outside motor 12-3, the first inboard motor 13-1, the second inboard motor 13-2 and the 3rd inboard motor 13-3 are bidirectional geared motor.
As shown in Figure 2; Be connected with the first overflow valve 38-1 and the second overflow valve 38-2 between the oil-in of said first outside motor 12-1 and the oil-out; The oil-in of the said first overflow valve 38-1 is connected with the oil-out of first outside motor 12-1; The oil-out of the said first overflow valve 38-1 is connected with the oil-in of first outside motor 12-1; The oil-in of the said second overflow valve 38-2 is connected with the oil-in of first outside motor 12-1, and the oil-out of the said second overflow valve 38-2 is connected with the oil-out of first outside motor 12-1; Be connected with the 3rd overflow valve 38-3 and the 4th overflow valve 38-4 between the oil-in of said second outside motor 12-2 and the oil-out; The oil-in of said the 3rd overflow valve 38-3 is connected with the oil-out of second outside motor 12-2; The oil-out of said the 3rd overflow valve 38-3 is connected with the oil-in of second outside motor 12-2; The oil-in of said the 4th overflow valve 38-4 is connected with the oil-in of second outside motor 12-2, and the oil-out of said the 4th overflow valve 38-4 is connected with the oil-out of second outside motor 12-2; Be connected with the 5th overflow valve 38-5 and the 6th overflow valve 38-6 between the oil-in of said the 3rd outside motor 12-3 and the oil-out; The oil-in of said the 5th overflow valve 38-5 is connected with the oil-out of the 3rd outside motor 12-3; The oil-out of said the 5th overflow valve 38-5 is connected with the oil-in of the 3rd outside motor 12-3; The oil-in of said the 6th overflow valve 38-6 is connected with the oil-in of the 3rd outside motor 12-3, and the oil-out of said the 6th overflow valve 38-6 is connected with the oil-out of the 3rd outside motor 12-3.The overload protection that is provided for realizing each gear motor of above-mentioned overflow valve.
As shown in Figure 2; Be connected with the 7th overflow valve 39-1 and the 8th overflow valve 39-2 between the oil-in of the said first inboard motor 13-1 and the oil-out; The oil-in of said the 7th overflow valve 39-1 is connected with the oil-out of the first inboard motor 13-1; The oil-out of said the 7th overflow valve 39-1 is connected with the oil-in of the first inboard motor 13-1; The oil-in of said the 8th overflow valve 39-2 is connected with the oil-in of the first inboard motor 13-1, and the oil-out of said the 8th overflow valve 39-2 is connected with the oil-out of the first inboard motor 13-1; Be connected with the 9th overflow valve 39-3 and the tenth overflow valve 39-4 between the oil-in of the said second inboard motor 13-2 and the oil-out; The oil-in of said the 9th overflow valve 39-3 is connected with the oil-out of the second inboard motor 13-2; The oil-out of said the 9th overflow valve 39-3 is connected with the oil-in of the second inboard motor 13-2; The oil-in of said the tenth overflow valve 39-4 is connected with the oil-in of the second inboard motor 13-2, and the oil-out of said the tenth overflow valve 39-4 is connected with the oil-out of the second inboard motor 13-2; Be connected with the 11 overflow valve 39-5 and the 12 overflow valve 39-6 between the oil-in of the said the 3rd inboard motor 13-3 and the oil-out; The oil-in of said the 11 overflow valve 39-5 is connected with the oil-out of the 3rd inboard motor 13-3; The oil-out of said the 11 overflow valve 39-5 is connected with the oil-in of the 3rd inboard motor 13-3; The oil-in of said the 12 overflow valve 39-6 is connected with the oil-in of the 3rd inboard motor 13-3, and the oil-out of said the 12 overflow valve 39-6 is connected with the oil-out of the 3rd inboard motor 13-3.The overload protection that is provided for realizing each gear motor of above-mentioned overflow valve.
As shown in Figure 2; On the said vertical beam overturning oil cylinder 8 on hydraulic fluid port, be respectively arranged with the first unidirectional adjustable throttling 31-1 and the second unidirectional adjustable throttling 31-2, the said first unidirectional adjustable throttling 31-1 and the second unidirectional adjustable throttling 31-2 are all between the overturning oil cylinder on the vertical beam 8 and second multiple directional control valve 25; Under the said vertical beam overturning oil cylinder 9 on hydraulic fluid port, be respectively arranged with the 3rd unidirectional adjustable throttling 32-1 and the 4th unidirectional adjustable throttling 32-2, the said the 3rd unidirectional adjustable throttling 32-1 and the 4th unidirectional adjustable throttling 32-2 are all between overturning oil cylinder on the vertical beam 9 and the 3rd multiple directional control valve 24; Said vertical beam telescopic oil cylinder 10 on hydraulic fluid port, be respectively arranged with the 5th unidirectional adjustable throttling 33-1 and the 6th unidirectional adjustable throttling 33-2, the said the 5th unidirectional adjustable throttling 33-1 and the 6th unidirectional adjustable throttling 33-2 are all between vertical beam telescopic oil cylinder 10 and the 4th multiple directional control valve 23; Said support arm overturning oil cylinder 11 on hydraulic fluid port, be respectively arranged with the 7th unidirectional adjustable throttling 34-1 and the 8th unidirectional adjustable throttling 34-2, the said the 7th unidirectional adjustable throttling 34-1 and the 8th unidirectional adjustable throttling 34-2 are all between support arm overturning oil cylinder 11 and the 5th multiple directional control valve 22.The first unidirectional adjustable throttling 31-1 and the second unidirectional adjustable throttling 31-2 are used to realize the speed-regulating function of overturning oil cylinder oil-out on the vertical beam; The 3rd unidirectional adjustable throttling 32-1 and the 4th unidirectional adjustable throttling 32-2 are used to realize the speed-regulating function of overturning oil cylinder oil-out under the vertical beam, and the 5th unidirectional adjustable throttling 33-1 and the 6th unidirectional adjustable throttling 33-2 are used to realize the speed-regulating function of vertical beam telescopic oil cylinder oil-out; The 7th unidirectional adjustable throttling 34-1 and the 8th unidirectional adjustable throttling 34-2 are used to realize the speed-regulating function of support arm overturning oil cylinder oil-out, to guarantee the stationarity of whole equipment action.In the present embodiment, unidirectional adjustable throttling is to be formed in parallel by choke valve and one way valve, realizes a direction throttling, the not throttling of another one direction.
As shown in Figure 2; Overturning oil cylinder 8 is provided with first bidirectional hydraulic lock 40 into and out of hydraulic fluid port on the said vertical beam; Overturning oil cylinder 9 is provided with second bidirectional hydraulic lock 41 into and out of hydraulic fluid port under the said vertical beam; Said vertical beam telescopic oil cylinder 10 be provided with the 3rd bidirectional hydraulic lock 42 into and out of hydraulic fluid port, said support arm overturning oil cylinder 11 be provided with the 4th bidirectional hydraulic lock 43 into and out of hydraulic fluid port.First bidirectional hydraulic lock 40, second bidirectional hydraulic lock 41, the 3rd bidirectional hydraulic lock 42 and the 4th bidirectional hydraulic lock 43 are respectively applied for realizes on the vertical beam the reliable positioning function when various operation operating mode of overturning oil cylinder 9, vertical beam telescopic oil cylinder 10 and support arm overturning oil cylinder 11 under overturning oil cylinder 8, the vertical beam.
As shown in Figure 2; The rodless cavity oil port of said crossbeam telescopic oil cylinder 7 is provided with first adjustable throttling 30; Be provided with second adjustable throttling 35 between said first outside motor 12-1 and the 6th multiple directional control valve 21; Be provided with the 3rd adjustable throttling 36 between the said first inboard motor 13-1 and the 7th multiple directional control valve 20, to realize the loop speed-regulating function.
As shown in Figure 2, also be connected with oil-feed oil filter 15-1 and oil return oil filter 15-2 on the said fuel tank 14; Be connected with unidirectional oil filter 16 between the said first vane pump 17-1 and second overflow valve 37, be connected with one way valve 45 between said unidirectional oil filter 16 and the 4th liang of position switching valve 18.Oil-feed oil filter 15-1 and oil return oil filter 15-2 are used for clear filtrate and press oil, to prolong the application life of pair vane pump.In the present embodiment, unidirectional oil filter is to be formed in parallel by an oil filter and an one way valve, realizes that forward is without hindrance, reverse filtration.
As depicted in figs. 1 and 2; A kind of multi-functional equipment of caring the car that adopts hydraulic system comprises junction plate 1, crossbeam 2, vertical beam 3, support arm 4, inner support 5, the first brush dish 6-1 and the second brush dish 6-2, and said junction plate 1 is installed in the rear end of crossbeam 2; Said vertical beam 3 is made up of vertically disposed sleeve pipe and horizontally disposed galianconism two parts; Said sleeve pipe is fixedly connected with galianconism, and the front end of the end of said sleeve pipe and crossbeam 2 is hinged, and the end of said galianconism and support arm 4 are hinged; Overturning oil cylinder 8 is installed in crossbeam 2 tops on the said vertical beam; Overturning oil cylinder 9 is installed in crossbeam 2 bottoms under the said vertical beam; Said crossbeam telescopic oil cylinder 7 is installed in the crossbeam 2; The piston rod end of said crossbeam telescopic oil cylinder 7 is hinged with first quadric chain 46 that is used to realize vertical beam 3 flip-flop movements, said first quadric chain 46 also with vertical beam under overturning oil cylinder 8 and the vertical beam piston rod end and the sleeve pipe of overturning oil cylinder 9 all hinged; Said vertical beam telescopic oil cylinder 10 is installed in the said sleeve pipe; Said support arm overturning oil cylinder 11 is installed on the said galianconism; The piston rod end of said support arm overturning oil cylinder 11 is hinged with second quadric chain 47 that is used to realize support arm 4 flip-flop movements, and said second quadric chain 47 is also all hinged with said galianconism and support arm 4; The said first inboard motor 13-1, the second inboard motor 13-2 and the 3rd inboard motor 13-3 are installed on the inner support 5; Said inner support 5 is connected with said sleeve pipe, and the said first inboard motor 13-1, the second inboard motor 13-2 and the 3rd inboard motor 13-3 all are connected with the second brush dish 6-2; Said first outside motor 12-1, second outside motor 12-2 and the 3rd outside motor 12-3 are installed on the support arm 4, and said first outside motor 12-1, second outside motor 12-2 and the 3rd outside motor 12-3 all are connected with the first brush dish 6-1.Above-mentioned crossbeam telescopic oil cylinder 7 adopts slide block mechanism (being made up of quiet arm square tube and swing arm sleeve pipe) to be installed in the crossbeam 2; Vertical beam telescopic oil cylinder 10 also adopts slide block mechanism to be installed in the vertical beam 3, has promptly adopted the relative slip of quiet arm square tube and swing arm sleeve pipe to realize the flexible of beam.During concrete the installation, an end of oil cylinder is hinged on the quiet arm square tube, the other end is hinged on the swing arm sleeve pipe.Hydraulic system in the present embodiment also can be used on the common hydraulic pressure highway maintenance car of the prior art, realizes isolated column cleaning and hedge trimming etc.
In the present embodiment; The 7th multiple directional control valve 20, the 6th multiple directional control valve 21, the 5th multiple directional control valve 22, the 4th multiple directional control valve 23, the 3rd multiple directional control valve 24 and second multiple directional control valve 25 all are meta function three position four-way directional control valves for " O " type, and first multiple directional control valve 26 is meta function three position four-way directional control valves for " Y " type; First liang of position switching valve 27 is two four-way electromagnetic reversing valves, and the 4th liang of position switching valve 18, second liang of position switching valve 28 and the 3rd liang of position switching valve 29 are the two-bit triplet solenoid operated directional valve, the 5th liang of position switching valve 19 2/2-way solenoid operated directional valves; Be equipped with the electromagnetism automatic switch on each multiple directional control valve and two position switching valves, can control the function in each loop automatically through electronic circuit.
The operating principle of the utility model is: when this hydraulic system is used under isolated column cleans operating mode, step on the clutch of caring the car, the power takeoff that closes is handled the flexible axle clutch, power takeoff with get final product work after the engine torque extraction mouth engages.When operating switch is not worked; Each solenoid operated directional valve be in the normal state (as shown in Figure 2); The second vane pump 17-2 is in unloading condition, and hydraulic oil directly flows back to fuel tank 14, the first vane pump 17-1 through the first vane pump 17-1, unidirectional oil filter 16 and the 5th liang of position switching valve 19 and is in unloading condition; Press hydraulic system unloader switch, make the position work of the 5th liang of position switching valve 19 left side, then hydraulic system master in-line is full of pressure oil, simultaneously 37 overflows of second overflow valve; Stretch out switch by lower transverse beam; First liang of position switching valve 27 is opened; And make first multiple directional control valve 26 work in parallel oil circuit; Pressure oil flows into the rodless cavity of crossbeam telescopic oil cylinders 7 through first multiple directional control valve 26 and first liang of position switching valve 27 and through first adjustable throttling 30, and the rod chamber fluid of crossbeam telescopic oil cylinder 7 flows back to fuel tank 14, realization crossbeam 2 stretch out action; When crossbeam 2 reaches desired location, unclamp crossbeam and stretch out switch, first liang of position switching valve 27 is got back to break off oil circuit, first multiple directional control valve 26 is got back to meta; On the vertical beam under overturning oil cylinder 8 oil circuits and the vertical beam between overturning oil cylinder 9 oil circuits electromagnetic switch through second multiple directional control valve 25, the 3rd multiple directional control valve 24 and second liang of position switching valve 28, the 3rd liang of position switching valve 29 in control circuit, form interlocking; Realized on the vertical beam under overturning oil cylinder 8 and the vertical beam in 9 two oil cylinders of overturning oil cylinder; One of them cylinder force action, another oil cylinder is in quick condition.Vertical beam 3 is transmitted horizontal attitude from folding attitude to turning up 180 ° of rotary movements are accomplished in two steps; Promptly realize the course of action from folding attitude to vertical attitude of the first step, realize the course of action from vertical attitude to horizontal attitude in second step through overturning oil cylinder under the vertical beam 9 through overturning oil cylinder on the vertical beam 8.Thereby the whole rotary movement of vertical beam is provided with four switches, i.e. the first step and the action of second step is provided with stretching out and the switch of withdrawing of corresponding oil cylinder respectively, to realize forward and reverse action in each step.When pressing expansion (hoisting) switch of vertical beam first step action; Pressure oil is through second multiple directional control valve, 25, the first unidirectional adjustable throttling 31-1; Flow into the rodless cavity of overturning oil cylinder 8 on the vertical beam through first bidirectional hydraulic lock 40; Through time-delay, the electromagnetic switch of the 3rd liang of position switching valve 29 is opened, and overturning oil cylinder 9 is in quick condition under the vertical beam; The interference of overturning oil cylinder 8 on 9 releasings of overturning oil cylinder under the vertical beam and vertical beam; Overturning oil cylinder 8 stressed actions on the vertical beam; Vertical beam 3 has been overturn be raised to certain position; Close the rising switch of tumbler switch on the vertical beam, second multiple directional control valve 25 and the 3rd liang of position switching valve 29 are all got back to normality, and vertical beam 3 has guaranteed the locking of vertical beam 3 positions through the dual locking of " O " type meta function of first bidirectional hydraulic lock 40 and second multiple directional control valve 25; When needs vertical beam 3 counteragents, press the decline retract switch that tumbler switch is gone up in first step action, make second multiple directional control valve 25 work in the intersection oil circuit, all the other are in like manner.In vertical beam first step course of action, the 3rd multiple directional control valve 24 is in meta all the time, does not work.Adjust the overhang of vertical beam 3 according to the actual height of isolated column; Press vertical beam rising switch, the 4th multiple directional control valve 23 is opened, and pressure oil is through the 4th multiple directional control valve 23, unidirectional adjustable throttling 33-1; Flow into the rodless cavity of vertical beam telescopic oil cylinder 10 through the 3rd bidirectional hydraulic lock 42; Vertical beam 3 reaches certain position, closes vertical beam rising switch, and vertical beam 3 is locked; When needing vertical beam 3 to descend, press vertical beam decline switch, make banked direction control valves work in the intersection oil circuit, all the other in like manner; The operating principle of support arm overturning oil cylinder 11 and vertical beam telescopic oil cylinder 10 are in like manner.Each oil cylinder moves in order, after the attitude adjustment finishes, opens the crossbeam float switch and promptly in control circuit, makes first liang of position switching valve 27 oil circuits connection, first multiple directional control valve 26 keep metas, guarantees that equipment is in quick condition when cleaning isolated column.Open inside and outside both sides groups of motors multi-way reversing threshold switch, caring the car before, during the operation of right position, make the groups of motors multiple directional control valve work in parallel oil circuit, caring the car before, during left operation, make the groups of motors multiple directional control valve work in the intersection oil circuit.
When the hydraulic system of the utility model was worked under the hedge trimming operating mode, attitude adjustment principle was identical with the cleaning operating mode, when needing locking crossbeam position, broke off the crossbeam float switch and got final product; During hedge trimming work, the 4th liang of position switching valve 18 left side position work, the first vane pump 17-1 and the second vane pump 17-2 provide pressure oil for system simultaneously; Vertical beam hoist that action is accomplished and locking after, the action of turning up of vertical beam is accomplished by overturning oil cylinder under the vertical beam 9, on the vertical beam under the operating principle of overturning oil cylinder 8 and the vertical beam overturning oil cylinder 9 identical; When only needing one-sided pruning, when promptly pruned in the outside, single oil pump feed was used in the 4th liang of position switching valve 18 right position work, opens the 6th multiple directional control valve 21 of outside groups of motors, thereby realizes one-sided hedge trimming function.
The above; It only is the preferred embodiment of the utility model; Be not that the utility model is done any restriction; Every according to the utility model technical spirit to any simple modification, change and equivalent structure transformation that above embodiment did, all still belong in the protection domain of the utility model technical scheme.
Claims (10)
1. hydraulic system; It is characterized in that: comprising that crossbeam stretches overturns that upset loop, the flexible loop of vertical beam, support arm upset loop, groups of motors loop, the outside, inboard groups of motors loop and first are unloaded oil return line and second and unloaded oil return line down for loop, vertical beam on loop, the vertical beam; Pair vane pump is connected with first multiple directional control valve (26), first liang of position switching valve (27) and crossbeam telescopic oil cylinder (7) successively in the flexible loop of said crossbeam; On the said vertical beam in the upset loop on pair vane pump and second multiple directional control valve (25), second liang of position switching valve (28) and the vertical beam overturning oil cylinder (8) be connected successively, said vertical beam time overturns in the loop, and overturning oil cylinder (9) is connected successively on the pair vane pump and the 3rd multiple directional control valve (24), the 3rd liang of position switching valve (29) and vertical beam; Pair vane pump is connected with vertical beam telescopic oil cylinder (10) with the 4th multiple directional control valve (23) successively in the flexible loop of said vertical beam, and pair vane pump is connected with support arm overturning oil cylinder (11) with the 5th multiple directional control valve (22) successively in the said support arm upset loop; Pair vane pump is connected with outboard gears groups of motors (12) with the 6th multiple directional control valve (21) successively in the groups of motors loop, the said outside, and pair vane pump is connected with inboard gear groups of motors (13) with the 7th multiple directional control valve (20) successively in the said inboard groups of motors loop; Said first unload pair vane pump in the oil return line second vane pump (17-2) be connected with the 4th liang of position switching valve (18), said second unload pair vane pump in the oil return line first vane pump (17-1) be connected with the 5th liang of position switching valve (19); Said crossbeam stretches and overturns that upset loop, the flexible loop of vertical beam, support arm upset loop, groups of motors loop, the outside, inboard groups of motors loop and first are unloaded oil return line and second and unloaded oil return line and all be connected with fuel tank (14) down for loop, vertical beam on loop, the vertical beam.
2. according to the described a kind of hydraulic system of claim 1; It is characterized in that: be connected with first overflow valve (44) between said second vane pump (17-2) and the 4th liang of position switching valve (18), be connected with second overflow valve (37) between said first vane pump (17-1) and the 5th liang of position switching valve (19).
3. according to claim 1 or 2 described a kind of hydraulic systems; It is characterized in that: said outside groups of motors is made up of first outside motor (12-1), second outside motor (12-2) and the 3rd outside motor (12-3) three parts of series connection connection successively, and said inboard groups of motors is made up of the first inboard motor (13-1), the second inboard motor (13-2) and the 3rd inboard motor (13-3) three parts of series connection connection successively; Said first outside motor (12-1), second outside motor (12-2), the 3rd outside motor (12-3), the first inboard motor (13-1), the second inboard motor (13-2) and the 3rd inboard motor (13-3) are bidirectional geared motor.
4. according to the described a kind of hydraulic system of claim 3; It is characterized in that: be connected with first overflow valve (38-1) and second overflow valve (38-2) between the oil-in of said first outside motor (12-1) and the oil-out; The oil-in of said first overflow valve (38-1) is connected with the oil-out of first outside motor (12-1); The oil-out of said first overflow valve (38-1) is connected with the oil-in of first outside motor (12-1); The oil-in of said second overflow valve (38-2) is connected with the oil-in of first outside motor (12-1), and the oil-out of said second overflow valve (38-2) is connected with the oil-out of first outside motor (12-1); Be connected with the 3rd overflow valve (38-3) and the 4th overflow valve (38-4) between the oil-in of said second outside motor (12-2) and the oil-out; The oil-in of said the 3rd overflow valve (38-3) is connected with the oil-out of second outside motor (12-2); The oil-out of said the 3rd overflow valve (38-3) is connected with the oil-in of second outside motor (12-2); The oil-in of said the 4th overflow valve (38-4) is connected with the oil-in of second outside motor (12-2), and the oil-out of said the 4th overflow valve (38-4) is connected with the oil-out of second outside motor (12-2); Be connected with the 5th overflow valve (38-5) and the 6th overflow valve (38-6) between the oil-in of said the 3rd outside motor (12-3) and the oil-out; The oil-in of said the 5th overflow valve (38-5) is connected with the oil-out of the 3rd outside motor (12-3); The oil-out of said the 5th overflow valve (38-5) is connected with the oil-in of the 3rd outside motor (12-3); The oil-in of said the 6th overflow valve (38-6) is connected with the oil-in of the 3rd outside motor (12-3), and the oil-out of said the 6th overflow valve (38-6) is connected with the oil-out of the 3rd outside motor (12-3).
5. according to the described a kind of hydraulic system of claim 3; It is characterized in that: be connected with the 7th overflow valve (39-1) and the 8th overflow valve (39-2) between the oil-in of the said first inboard motor (13-1) and the oil-out; The oil-in of said the 7th overflow valve (39-1) is connected with the oil-out of the first inboard motor (13-1); The oil-out of said the 7th overflow valve (39-1) is connected with the oil-in of the first inboard motor (13-1); The oil-in of said the 8th overflow valve (39-2) is connected with the oil-in of the first inboard motor (13-1), and the oil-out of said the 8th overflow valve (39-2) is connected with the oil-out of the first inboard motor (13-1); Be connected with the 9th overflow valve (39-3) and the tenth overflow valve (39-4) between the oil-in of the said second inboard motor (13-2) and the oil-out; The oil-in of said the 9th overflow valve (39-3) is connected with the oil-out of the second inboard motor (13-2); The oil-out of said the 9th overflow valve (39-3) is connected with the oil-in of the second inboard motor (13-2); The oil-in of said the tenth overflow valve (39-4) is connected with the oil-in of the second inboard motor (13-2), and the oil-out of said the tenth overflow valve (39-4) is connected with the oil-out of the second inboard motor (13-2); Be connected with the 11 overflow valve (39-5) and the 12 overflow valve (39-6) between the oil-in of the said the 3rd inboard motor (13-3) and the oil-out; The oil-in of said the 11 overflow valve (39-5) is connected with the oil-out of the 3rd inboard motor (13-3); The oil-out of said the 11 overflow valve (39-5) is connected with the oil-in of the 3rd inboard motor (13-3); The oil-in of said the 12 overflow valve (39-6) is connected with the oil-in of the 3rd inboard motor (13-3), and the oil-out of said the 12 overflow valve (39-6) is connected with the oil-out of the 3rd inboard motor (13-3).
6. according to claim 1 or 2 described a kind of hydraulic systems; It is characterized in that: overturning oil cylinder on the said vertical beam (8) on hydraulic fluid port, be respectively arranged with the first unidirectional adjustable throttling (31-1) and the second unidirectional adjustable throttling (31-2), the said first unidirectional adjustable throttling (31-1) and the second unidirectional adjustable throttling (31-2) all are positioned between overturning oil cylinder on the vertical beam (8) and second multiple directional control valve (25); Overturning oil cylinder under the said vertical beam (9) on hydraulic fluid port, be respectively arranged with the 3rd unidirectional adjustable throttling (32-1) and the 4th unidirectional adjustable throttling (32-2), the said the 3rd unidirectional adjustable throttling (32-1) and the 4th unidirectional adjustable throttling (32-2) all are positioned between overturning oil cylinder on the vertical beam (9) and the 3rd multiple directional control valve (24); Said vertical beam telescopic oil cylinder (10) on hydraulic fluid port, be respectively arranged with the 5th unidirectional adjustable throttling (33-1) and the 6th unidirectional adjustable throttling (33-2), the said the 5th unidirectional adjustable throttling (33-1) and the 6th unidirectional adjustable throttling (33-2) all are positioned between vertical beam telescopic oil cylinder (10) and the 4th multiple directional control valve (23); Said support arm overturning oil cylinder (11) on hydraulic fluid port, be respectively arranged with the 7th unidirectional adjustable throttling (34-1) and the 8th unidirectional adjustable throttling (34-2), the said the 7th unidirectional adjustable throttling (34-1) and the 8th unidirectional adjustable throttling (34-2) all are positioned between support arm overturning oil cylinder (11) and the 5th multiple directional control valve (22).
7. according to claim 1 or 2 described a kind of hydraulic systems; It is characterized in that: overturning oil cylinder on the said vertical beam (8) be provided with first bidirectional hydraulic lock (40) into and out of hydraulic fluid port; Overturning oil cylinder under the said vertical beam (9) be provided with second bidirectional hydraulic lock (41) into and out of hydraulic fluid port; Said vertical beam telescopic oil cylinder (10) be provided with the 3rd bidirectional hydraulic lock (42) into and out of hydraulic fluid port, said support arm overturning oil cylinder (11) be provided with the 4th bidirectional hydraulic lock (43) into and out of hydraulic fluid port.
8. according to claim 1 or 2 described a kind of hydraulic systems; It is characterized in that: the rodless cavity oil port of said crossbeam telescopic oil cylinder (7) is provided with first adjustable throttling (30); Be provided with second adjustable throttling (35) between said first outside motor (12-1) and the 6th multiple directional control valve (21), be provided with the 3rd adjustable throttling (36) between the said first inboard motor (13-1) and the 7th multiple directional control valve (20).
9. according to the described a kind of hydraulic system of claim 2, it is characterized in that: also be connected with oil-feed oil filter (15-1) and oil return oil filter (15-2) on the said fuel tank (14); Be connected with unidirectional oil filter (16) between said first vane pump (17-1) and second overflow valve (37), be connected with one way valve (45) between said unidirectional oil filter (16) and the 4th liang of position switching valve (18).
10. the multi-functional equipment of caring the car of employing such as the said hydraulic system of claim 3; It is characterized in that: comprise junction plate (1), crossbeam (2), vertical beam (3), support arm (4), inner support (5), the first brush dish (6-1) and the second brush dish (6-2); Said junction plate (1) is installed in the rear end of crossbeam (2); Said vertical beam (3) is made up of vertically disposed sleeve pipe and horizontally disposed galianconism two parts; Said sleeve pipe is fixedly connected with galianconism, and the front end of the end of said sleeve pipe and crossbeam (2) is hinged, and the end of said galianconism and support arm (4) are hinged; Overturning oil cylinder on the said vertical beam (8) is installed in crossbeam (2) top; Overturning oil cylinder under the said vertical beam (9) is installed in crossbeam (2) bottom; Said crossbeam telescopic oil cylinder (7) is installed in the crossbeam (2); The piston rod end of said crossbeam telescopic oil cylinder (7) is hinged with first quadric chain (46) that is used to realize vertical beam (3) flip-flop movement, said first quadric chain (46) also with vertical beam under overturning oil cylinder (8) and the vertical beam piston rod end and the sleeve pipe of overturning oil cylinder (9) all hinged; Said vertical beam telescopic oil cylinder (10) is installed in the said sleeve pipe; Said support arm overturning oil cylinder (11) is installed on the said galianconism; The piston rod end of said support arm overturning oil cylinder (11) is hinged with second quadric chain (47) that is used to realize support arm (4) flip-flop movement, and said second quadric chain (47) is also all hinged with said galianconism and support arm (4); The said first inboard motor (13-1), the second inboard motor (13-2) and the 3rd inboard motor (13-3) are installed on the inner support (5); Said inner support (5) is connected with said sleeve pipe, and the said first inboard motor (13-1), the second inboard motor (13-2) and the 3rd inboard motor (13-3) all are connected with the second brush dish (6-2); Said first outside motor (12-1), second outside motor (12-2) and the 3rd outside motor (12-3) are installed on the support arm (4), and said first outside motor (12-1), second outside motor (12-2) and the 3rd outside motor (12-3) all are connected with the first brush dish (6-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204713565U CN202323835U (en) | 2011-11-23 | 2011-11-23 | Hydraulic system and multifunctional maintenance truck working device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204713565U CN202323835U (en) | 2011-11-23 | 2011-11-23 | Hydraulic system and multifunctional maintenance truck working device |
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| Publication Number | Publication Date |
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| CN202323835U true CN202323835U (en) | 2012-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011204713565U Withdrawn - After Issue CN202323835U (en) | 2011-11-23 | 2011-11-23 | Hydraulic system and multifunctional maintenance truck working device |
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| CN (1) | CN202323835U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493380A (en) * | 2011-11-23 | 2012-06-13 | 长安大学 | Hydraulic system and multifunctional maintenance truck working device |
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2011
- 2011-11-23 CN CN2011204713565U patent/CN202323835U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493380A (en) * | 2011-11-23 | 2012-06-13 | 长安大学 | Hydraulic system and multifunctional maintenance truck working device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120711 Effective date of abandoning: 20131113 |
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| RGAV | Abandon patent right to avoid regrant |