CN104976302A - Hydraulic coupler - Google Patents
Hydraulic coupler Download PDFInfo
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- CN104976302A CN104976302A CN201510419103.6A CN201510419103A CN104976302A CN 104976302 A CN104976302 A CN 104976302A CN 201510419103 A CN201510419103 A CN 201510419103A CN 104976302 A CN104976302 A CN 104976302A
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- Prior art keywords
- connecting pipeline
- motor
- hydraulic
- oil
- fuel tank
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H39/00—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution
- F16H39/02—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution with liquid motors at a distance from liquid pumps
Abstract
The invention discloses a hydraulic coupler. The hydraulic coupler comprises a hydraulic oil pump, a hydraulic motor, a first proportional overflow valve, a second proportional overflow valve, a reversing valve, an oil tank, a cooler, a filter and the like. The hydraulic coupler has the characteristics of being high in working efficiency, small in size, capable of completing load limit safety protection and stepless speed regulation, sufficiently adjustable in starting performance, wider in speed regulation range and the like. The hydraulic coupler is provided with the cooler and the filter, and therefore reasonable working oil temperature and cleanness can be maintained. Meanwhile, the second proportional overflow valve is arranged on a hydraulic motor oil return pipeline, and therefore hydraulic braking of a working machine can be achieved; a reasonable braking curve is set, and therefore ideal braking performance can be achieved. The hydraulic coupler can be applied to starting a turbine or a fan and achieve the functions of stable starting of the turbine or the fan in the working process, load limit safety protection, speed regulation, hydraulic braking and the like, thereby having broader application prospects.
Description
Technical field
The present invention relates to the Coupler used in the start-up course of power plant, be specifically related to a kind of hydraulic coupler, belong to electric and field of electromechanical technology.
Background technique
At present, in the start-up course of steam turbine and blower fan, widely use fluid coupling, realize the smooth starting of working procedure.But due to fluid coupling exist inefficiency, volume large, there is the shortcomings, particularly high-power fluid coupling such as speed discrepancy, Impeller Design and difficulty of processing are large between prime mover and working machine, its shortcoming is more outstanding.In order to overcome the above shortcoming of fluid coupling, the application proposes, a kind of hydraulic coupler, primarily of hydraulic-pressure pump, oil hydraulic motor, proportional pressure control valve, cooler, the hydraulic element compositions such as filter, hydraulic-pressure pump on the one hand, oil hydraulic motor, proportional pressure control valve, cooler, the hydraulic element such as filter are the product of ripe sizing, stable performance, purchase cost is low, on the other hand, utilize hydraulic-pressure pump, oil hydraulic motor, proportional pressure control valve, cooler, the hydraulic coupler of the composition such as filter, there is higher working efficiency, startability is fully adjustable, stepless speed regulation can be realized, the characteristic that speed adjustable range is wider, hydraulic coupler in the present invention is with cooler and filter, rational working oil liquid temp and turbidity test can be maintained, simultaneously, second proportional pressure control valve is arranged on the hydraulic braking that oil hydraulic motor return line can realize working machine, and rational braking curve is set, obtain desirable braking ability.So the hydraulic coupler that the application proposes has application prospect widely.
Summary of the invention
The object of the present invention is to provide a kind of hydraulic coupler.
The technical solution used in the present invention is: a kind of hydraulic coupler, comprises hydraulic-pressure pump (1), oil hydraulic motor (2), the first proportional pressure control valve (3), fuel tank (4), connecting pipeline (5), cooler (6) and filter (7), the second proportional pressure control valve (8), selector valve (9); Described fuel tank (4) comprises fuel tank right sideboard (4-1) and fuel tank left sideboard (4-2), and described connecting pipeline (5) comprises the first connecting pipeline (5-1), the second connecting pipeline (5-2), the 3rd connecting pipeline (5-3), the 4th connecting pipeline (5-4), the 5th connecting pipeline (5-5), the 6th connecting pipeline (5-6), the 7th connecting pipeline (5-7), the 8th connecting pipeline (5-8).
Described hydraulic-pressure pump (1) comprises oil pump input shaft (1-1), oil pump suction mouth (1-3), oil pump oil outlet (1-6), oil pump leakage hole (1-7), described hydraulic-pressure pump (1) is installed on fuel tank (4) inner side, and be arranged on fuel tank right sideboard (4-1) by oil pump mounting screw (1-5), oil pump end face seal pad (1-2) is provided with between the end face of hydraulic-pressure pump (1) and fuel tank right sideboard (4-1), play seal action, prevent oil liquid leakage, described oil pump input shaft (1-1) can be connected with prime mover by coupling, described oil pump suction mouth (1-3) is communicated with the work fluid in fuel tank (4) by oil pump suction tube (1-4), described oil pump leakage hole (1-7) is communicated with the second connecting pipeline (5-2) by oil pump drain pipeline (1-8), described oil pump oil outlet (1-6) is connected with the first connecting pipeline (5-1), and be connected with the motor filler opening (2-6) of oil hydraulic motor (2) and the first proportional pressure control valve oil inlet pipe (3-1) of the first proportional pressure control valve (3) by the first connecting pipeline (5-1), described oil hydraulic motor (2) comprises motor output shaft (2-1), motor return opening (2-3), motor filler opening (2-6), motor leakage hole (2-7), described oil hydraulic motor (2) is installed on fuel tank (4) inner side, and be arranged on fuel tank left sideboard (4-2) by motor mounting screw (2-5), motor end face sealing gasket (2-2) is provided with between the end face of oil hydraulic motor (2) and fuel tank left sideboard (4-2), play seal action, prevent oil liquid leakage, described motor output shaft (2-1) can be connected with working machine by coupling, described motor return opening (2-3) is by motor return tube (2-4), 5th connecting pipeline (5-5) is communicated with the 6th connecting pipeline (5-6) and the 8th connecting pipeline (5-8) respectively, and then be connected with the filler opening of the second proportional pressure control valve (8) with selector valve (9), described motor leakage hole (2-7) is communicated with the second connecting pipeline (5-2) by motor drain pipeline (2-8), described motor filler opening (2-6) is connected with the first connecting pipeline (5-1), and be connected with the oil pump oil outlet (1-6) of hydraulic-pressure pump (1) and the first proportional pressure control valve oil inlet pipe (3-1) of the first proportional pressure control valve (3) by the first connecting pipeline (5-1), the filler opening of described first proportional pressure control valve (3) is connected with the first connecting pipeline (5-1) by the first proportional pressure control valve oil inlet pipe (3-1), and is connected with motor filler opening (2-6) with oil pump oil outlet (1-6) respectively by the first connecting pipeline (5-1), described fuel tank (4) internal storage has work fluid, the fuel tank right sideboard (4-1) of fuel tank (4) offers through hole,, oil pump input shaft (1-1) passes from the through hole fuel tank right sideboard (4-1),, fuel tank (4) fuel tank left sideboard (4-2) on offer through hole, motor output shaft (2-1) passes from the through hole fuel tank left sideboard (4-2).
The filler opening of described second proportional pressure control valve (8) is by the 6th connecting pipeline (5-6), 5th connecting pipeline (5-5), motor return tube (2-4) is connected with motor return opening (2-3), the return opening of described second proportional pressure control valve (8) is communicated with the 4th connecting pipeline (5-4) by the 7th connecting pipeline (5-7), and the work fluid be communicated with in fuel tank (4), the filler opening of described selector valve (9) is by the 8th connecting pipeline (5-8), 5th connecting pipeline (5-5), motor return tube (2-4) is connected with motor return opening (2-3), the return opening of described selector valve (9) is communicated with the 4th connecting pipeline (5-4) by the 9th connecting pipeline (5-9), and the work fluid be communicated with in fuel tank (4).When hydraulic coupler work, selector valve (9) are in left position working state, the oil return of oil hydraulic motor (2) can pass through motor return opening (2-3), motor return tube (2-4), the 5th connecting pipeline (5-5), the 8th connecting pipeline (5-8), the left position of selector valve (9), the 9th connecting pipeline (5-9), the 4th connecting pipeline (5-4) are got back in fuel tank (4), and working machine is in normal working; When hydraulic coupler work, selector valve (9) are in right position working state, the oil return of oil hydraulic motor (2) can pass through motor return opening (2-3), motor return tube (2-4), the 5th connecting pipeline (5-5), the 6th connecting pipeline (5-6), the second proportional pressure control valve (8), the 7th connecting pipeline (5-7), the 4th connecting pipeline (5-4) are got back in fuel tank (4), and working machine is in braking state.
The filler opening of described cooler (6) is by after the 3rd connecting pipeline (5-3), the second connecting pipeline (5-2), oil pump leakage hole (1-7) and motor leakage hole (2-7) is communicated with respectively with motor drain pipeline (2-8) more respectively by oil pump drain pipeline (1-8), the oil outlet of described cooler (6) is connected with the filler opening of filter (7), and the oil outlet of described filter (7) is communicated with the work fluid in fuel tank (4) by the 4th connecting pipeline (5-4).
When hydraulic coupler starts, the working machine be connected with motor output shaft (2-1) has larger inertia load and friction load, in order to enable working machine smooth starting, reduce startup impact and the starting load of prime mover, lower control signal is arranged to the first proportional pressure control valve (3), corresponding to the cracking pressure that the first proportional pressure control valve (3) is lower, and progressively increase the control signal of the first proportional pressure control valve (3), operating oil pressure corresponding to motor steadily increases, the output torque of motor output shaft (2-1) progressively increases, steadily realize working machine start-up course, the cracking pressure of final control first proportional pressure control valve (3) reach with slightly larger than oil pressure corresponding to working machine nominal torque, ensure in working machine rated load ranges on the one hand, first proportional pressure control valve (3) can not produce overflow, the work fluid that hydraulic-pressure pump (1) exports fully enters in oil hydraulic motor (2), improve the working efficiency of hydraulic coupler, on the other hand, when job opportunity is to fault state, when there is overload, the inlet pressure of the first proportional pressure control valve (3) raises, when being greater than the cracking pressure of the first proportional pressure control valve (3), first proportional pressure control valve (3) produces overflow, the operating oil pressure of restriction oil hydraulic motor (2), the operating load of final restriction working machine, prevent hydraulic coupler and prime mover overload, play safety protection effect, so, by arranging the smooth starting that the first proportional pressure control valve (3) can realize working machine on the path of hydraulic-pressure pump (1) and oil hydraulic motor (2), by arranging the different curves of the first proportional pressure control valve (3) control signal, very easily can control the start-up course of working machine, simultaneously, after using the first proportional pressure control valve (3) in hydraulic coupler, the overload protection function of hydraulic coupler can be realized easily.Cooler (6) plays cooling action, and filter (7) plays filter cleaning effect.
When hydraulic coupler work, when selector valve (9) is in left position working state, prime mover drives oil pump input shaft (1-1) to rotate together by coupling, oil pump suction mouth (1-3) is by oil pump suction tube (1-4) absorption work fluid from fuel tank (4), work fluid is discharged from oil pump oil outlet (1-6), and enter motor filler opening (2-6) by the first connecting pipeline (5-1), the oil return of oil hydraulic motor (2) can pass through motor return opening (2-3), motor return tube (2-4), 5th connecting pipeline (5-5), 8th connecting pipeline (5-8), the left position of selector valve (9), 9th connecting pipeline (5-9), 4th connecting pipeline (5-4) is got back in fuel tank (4), oil hydraulic motor (2) works, drive motor output shaft (2-1) rotates, and drive working machine work by coupling.The Leakage Energy of hydraulic-pressure pump (1) is successively by oil pump leakage hole (1-7), oil pump drain pipeline (1-8), second connecting pipeline (5-2), 3rd connecting pipeline (5-3), cooler (6), filter (7), 4th connecting pipeline (5-4) flows back in fuel tank (4), the Leakage Energy of oil hydraulic motor (2) is successively by motor leakage hole (2-7), motor drain pipeline (2-8), second connecting pipeline (5-2), 3rd connecting pipeline (5-3), cooler (6), filter (7), 4th connecting pipeline (5-4) flows back in fuel tank (4), the Leakage Energy of cooler (6) to the Leakage Energy of hydraulic-pressure pump (1) and oil hydraulic motor (2) plays cooling action, the Leakage Energy of filter (7) to the Leakage Energy of hydraulic-pressure pump (1) and oil hydraulic motor (2) plays filter cleaning effect.
When hydraulic coupler work, selector valve (9) are in right position working state, simultaneously, first proportional pressure control valve (3) control signal is set to zero, the operating oil pressure of oil hydraulic motor (2) is made to be in minimum state, the oil return of oil hydraulic motor (2) can pass through motor return opening (2-3), motor return tube (2-4), the 5th connecting pipeline (5-5), the 6th connecting pipeline (5-6), the second proportional pressure control valve (8), the 7th connecting pipeline (5-7), the 4th connecting pipeline (5-4) are got back in fuel tank (4), realizes the hydraulic braking of working machine.
Described hydraulic-pressure pump (1) can be metering pump or variable displacement pump, when hydraulic-pressure pump (1) is for variable displacement pump, can realize the speed-regulating function of hydraulic coupler, because variable displacement pump speed governing is volumetric speed control, makes hydraulic coupler have higher speed efficiency.
Described oil hydraulic motor (2) can be fixed displacement motor or variable displacement motor, when oil hydraulic motor (2) is for variable displacement motor, the speed-regulating function of hydraulic coupler can be realized, because variable displacement motor speed governing is volumetric speed control, make hydraulic coupler have higher speed efficiency.
Described first proportional pressure control valve (3) and the second proportional pressure control valve (8) also can be manual tune relief valves.
Described cooler (6) can be water cooler, forced air cooler, refrigerant cooler.
When hydraulic coupler uses variable displacement pump or variable displacement motor, hydraulic coupler possesses speed-regulating function, and hydraulic coupler has higher speed efficiency and wider speed adjustable range simultaneously.
The invention has the beneficial effects as follows:
The present invention is by hydraulic-pressure pump, oil hydraulic motor, proportional pressure control valve, cooler, the hydraulic element compositions such as the hydraulic coupler of the composition such as filter, hydraulic-pressure pump on the one hand, oil hydraulic motor, proportional pressure control valve, cooler, the hydraulic element such as filter are the product of ripe sizing, stable performance, purchase cost is low, on the other hand, utilize hydraulic-pressure pump, oil hydraulic motor, the hydraulic coupler of the composition such as proportional pressure control valve, there is higher working efficiency, volume is little, restriction safety protection, startability is fully adjustable, stepless speed regulation can be realized, the characteristics such as speed adjustable range is wider, hydraulic coupler in the present invention is with cooler and filter, rational working oil liquid temp and turbidity test can be maintained, simultaneously, second proportional pressure control valve is arranged on the hydraulic braking that oil hydraulic motor return line can realize working machine, and rational braking curve is set, obtain desirable braking ability.So the hydraulic coupler that the present invention proposes has application prospect widely.
Accompanying drawing explanation
The embodiment provided below in conjunction with accompanying drawing is described in more detail the present invention.
Fig. 1 is structural representation of the present invention.
Embodiment
As shown in Figure 1, a kind of hydraulic coupler, comprises hydraulic-pressure pump 1, oil hydraulic motor 2, first proportional pressure control valve 3, fuel tank 4, cooler 6, connecting pipeline 5 and filter 7, second proportional pressure control valve 8, selector valve 9; Fuel tank 4 comprises fuel tank right sideboard 4-1 and fuel tank left sideboard 4-2, and connecting pipeline 5 comprises the first connecting pipeline 5-1, the second connecting pipeline 5-2, the 3rd connecting pipeline 5-3, the 4th connecting pipeline 5-4, the 5th connecting pipeline 5-5, the 6th connecting pipeline 5-6, the 7th connecting pipeline 5-7, the 8th connecting pipeline 5-8.
Hydraulic-pressure pump 1 comprises oil pump input shaft 1-1, oil pump suction mouth 1-3, oil pump oil outlet 1-6, oil pump leakage hole 1-7, hydraulic-pressure pump 1 is installed on inside fuel tank 4, and be arranged on fuel tank right sideboard 4-1 by oil pump mounting screw 1-5, oil pump end face seal pad 1-2 is provided with between the end face of hydraulic-pressure pump 1 and fuel tank right sideboard 4-1, play seal action, prevent oil liquid leakage, oil pump input shaft 1-1 can be connected with prime mover by coupling, oil pump suction mouth 1-3 is communicated with the work fluid in fuel tank 4 by oil pump suction tube 1-4, oil pump leakage hole 1-7 is communicated with the second connecting pipeline 5-2 by oil pump drain pipeline 1-8, oil pump oil outlet 1-6 is connected with the first connecting pipeline 5-1, and be connected with the motor filler opening 2-6 of oil hydraulic motor 2 and the first proportional pressure control valve oil inlet pipe 3-1 of the first proportional pressure control valve 3 by the first connecting pipeline 5-1, oil hydraulic motor 2 comprises motor output shaft 2-1, motor return opening 2-3, motor filler opening 2-6, motor leakage hole 2-7, oil hydraulic motor 2 is installed on inside fuel tank 4, and be arranged on fuel tank left sideboard 4-2 by motor mounting screw 2-5, motor end face sealing gasket 2-2 is provided with between the end face of oil hydraulic motor 2 and fuel tank left sideboard 4-2, play seal action, prevent oil liquid leakage, motor output shaft 2-1 can be connected with working machine by coupling, motor return opening 2-3 is by motor return tube 2-4, 5th connecting pipeline 5-5 is communicated with the 6th connecting pipeline 5-6 and the 8th connecting pipeline 5-8 respectively, and then be connected with the filler opening of selector valve 9 with the second proportional pressure control valve 8, motor leakage hole 2-7 is communicated with the second connecting pipeline 5-2 by motor drain pipeline 2-8, motor filler opening 2-6 is connected with the first connecting pipeline 5-1, and be connected with the oil pump oil outlet 1-6 of hydraulic-pressure pump 1 and the first proportional pressure control valve oil inlet pipe 3-1 of the first proportional pressure control valve 3 by the first connecting pipeline 5-1, the filler opening of the first proportional pressure control valve 3 is connected with the first connecting pipeline 5-1 by the first proportional pressure control valve oil inlet pipe 3-1, and is connected with motor filler opening 2-6 with oil pump oil outlet 1-6 respectively by the first connecting pipeline 5-1, fuel tank 4 internal storage has work fluid, the fuel tank right sideboard 4-1 of fuel tank 4 offers through hole, oil pump input shaft 1-1 passes from the through hole fuel tank right sideboard 4-1, and the fuel tank left sideboard 4-2 of fuel tank 4 offers through hole, and motor output shaft 2-1 passes from the through hole fuel tank left sideboard 4-2.
The filler opening of the second proportional pressure control valve 8 is by the 6th connecting pipeline 5-6, 5th connecting pipeline 5-5, motor return tube 2-4 is connected with motor return opening 2-3, the return opening of the second proportional pressure control valve 8 is communicated with the 4th connecting pipeline 5-4 by the 7th connecting pipeline 5-7, and the work fluid be communicated with in fuel tank 4, the filler opening of selector valve 9 is by the 8th connecting pipeline 5-8, 5th connecting pipeline 5-5, motor return tube 2-4 is connected with motor return opening 2-3, the return opening of selector valve 9 is communicated with the 4th connecting pipeline 5-4 by the 9th connecting pipeline 5-9, and the work fluid be communicated with in fuel tank 4.When hydraulic coupler work, selector valve 9 are in left position working state, the oil return of oil hydraulic motor 2 can be got back in fuel tank 4 by the left position of motor return opening 2-3, motor return tube 2-4, the 5th connecting pipeline 5-5, the 8th connecting pipeline 5-8, selector valve 9, the 9th connecting pipeline 5-9, the 4th connecting pipeline 5-4, and working machine is in normal working; When hydraulic coupler work, selector valve 9 are in right position working state, the oil return of oil hydraulic motor 2 can be got back in fuel tank 4 by motor return opening 2-3, motor return tube 2-4, the 5th connecting pipeline 5-5, the 6th connecting pipeline 5-6, the second proportional pressure control valve 8, the 7th connecting pipeline 5-7, the 4th connecting pipeline 5-4, and working machine is in braking state.
The filler opening of cooler 6 is by after the 3rd connecting pipeline 5-3, the second connecting pipeline 5-2, oil pump leakage hole 1-7 and motor leakage hole 2-7 is communicated with respectively more respectively by oil pump drain pipeline 1-8 and motor drain pipeline 2-8, the oil outlet of cooler 6 is connected by the filler opening of connecting pipeline 5 with filter 7, and the oil outlet of filter 7 is communicated with the work fluid in fuel tank 4 by the 4th connecting pipeline 5-4.
When hydraulic coupler starts, the working machine be connected with motor output shaft 2-1 has larger inertia load and friction load, in order to enable working machine smooth starting, reduce startup impact and the starting load of prime mover, lower control signal is arranged to the first proportional pressure control valve 3, corresponding to the cracking pressure that the first proportional pressure control valve 3 is lower, and progressively increase the control signal of the first proportional pressure control valve 3, operating oil pressure corresponding to motor steadily increases, the output torque of motor output shaft 2-1 progressively increases, steadily realize working machine start-up course, the cracking pressure of final control first proportional pressure control valve 3 reach with slightly larger than oil pressure corresponding to working machine nominal torque, ensure in working machine rated load ranges on the one hand, first proportional pressure control valve 3 can not produce overflow, the work fluid that hydraulic-pressure pump 1 exports fully enters in oil hydraulic motor 2, improve the working efficiency of hydraulic coupler, on the other hand, when job opportunity is to fault state, when there is overload, the inlet pressure of the first proportional pressure control valve 3 raises, when being greater than the cracking pressure of the first proportional pressure control valve 3, first proportional pressure control valve 3 produces overflow, the operating oil pressure of restriction oil hydraulic motor 2, the operating load of final restriction working machine, prevent hydraulic coupler and prime mover overload, play safety protection effect, so, by arranging the smooth starting that the first proportional pressure control valve 3 can realize working machine on the path of hydraulic-pressure pump 1 and oil hydraulic motor 2, by arranging the different curves of the first proportional pressure control valve 3 control signal, very easily can control the start-up course of working machine, simultaneously, after using the first proportional pressure control valve 3 in hydraulic coupler, the overload protection function of hydraulic coupler can be realized easily.Cooler 6 plays cooling action, and filter 7 plays filter cleaning effect.
When hydraulic coupler work, when selector valve 9 is in left position working state, prime mover drives oil pump input shaft 1-1 to rotate together by coupling, oil pump suction mouth 1-3 draws work fluid by oil pump suction tube 1-4 from fuel tank 4, work fluid is discharged from oil pump oil outlet 1-6, and enter motor filler opening 2-6 by the first connecting pipeline 5-1, the oil return of oil hydraulic motor 2 can pass through motor return opening 2-3, motor return tube 2-4, 5th connecting pipeline 5-5, 8th connecting pipeline 5-8, the left position of selector valve 9, 9th connecting pipeline 5-9, 4th connecting pipeline 5-4 gets back in fuel tank 4, oil hydraulic motor 2 works, drive motor output shaft 2-1 rotates, and drive working machine work by coupling.The Leakage Energy of hydraulic-pressure pump 1 is successively by oil pump leakage hole 1-7, oil pump drain pipeline 1-8, second connecting pipeline 5-2, 3rd connecting pipeline 5-3, cooler 6, filter 7, 4th connecting pipeline 5-4 flows back in fuel tank 4, the Leakage Energy of oil hydraulic motor 2 is successively by motor leakage hole 2-7, motor drain pipeline 2-8, second connecting pipeline 5-2, 3rd connecting pipeline 5-3, cooler 6, filter 7, 4th connecting pipeline 5-4 flows back in fuel tank 4, the Leakage Energy of cooler 6 pairs of hydraulic-pressure pumps 1 and the Leakage Energy of oil hydraulic motor 2 play cooling action, the Leakage Energy of filter 7 pairs of hydraulic-pressure pumps 1 and the Leakage Energy of oil hydraulic motor 2 play filter cleaning effect.
When hydraulic coupler work, selector valve 9 are in right position working state, simultaneously, first proportional pressure control valve 3 control signal is set to zero, the operating oil pressure of oil hydraulic motor 2 is made to be in minimum state, the oil return of oil hydraulic motor 2 can be got back in fuel tank 4 by motor return opening 2-3, motor return tube 2-4, the 5th connecting pipeline 5-5, the 6th connecting pipeline 5-6, the second proportional pressure control valve 8, the 7th connecting pipeline 5-7, the 4th connecting pipeline 5-4, realizes the hydraulic braking of working machine.
Preferably, hydraulic-pressure pump 1 can be metering pump or variable displacement pump, when hydraulic-pressure pump 1 is variable displacement pump, can realize the speed-regulating function of hydraulic coupler, because variable displacement pump speed governing is volumetric speed control, makes hydraulic coupler have higher speed efficiency.
Preferably, oil hydraulic motor 2 can be fixed displacement motor or variable displacement motor, when oil hydraulic motor 2 is variable displacement motor, can realize the speed-regulating function of hydraulic coupler, because variable displacement motor speed governing is volumetric speed control, hydraulic coupler is made to have higher speed efficiency.
Preferably, the first proportional pressure control valve 3 and the second proportional pressure control valve 8 also can be manual tune relief valves.
Preferably, cooler 6 can be water cooler, forced air cooler, refrigerant cooler.
When hydraulic coupler uses variable displacement pump or variable displacement motor, hydraulic coupler possesses speed-regulating function, and hydraulic coupler has higher speed efficiency and wider speed adjustable range simultaneously.
The invention has the beneficial effects as follows:
The present invention is by hydraulic-pressure pump, oil hydraulic motor, proportional pressure control valve, cooler, the hydraulic element compositions such as the hydraulic coupler of the composition such as filter, hydraulic-pressure pump on the one hand, oil hydraulic motor, proportional pressure control valve, cooler, the hydraulic element such as filter are the product of ripe sizing, stable performance, purchase cost is low, on the other hand, utilize hydraulic-pressure pump, oil hydraulic motor, the hydraulic coupler of the composition such as proportional pressure control valve, there is higher working efficiency, volume is little, restriction safety protection, startability is fully adjustable, stepless speed regulation can be realized, the characteristics such as speed adjustable range is wider, hydraulic coupler in the present invention is with cooler and filter, rational working oil liquid temp and turbidity test can be maintained, simultaneously, second proportional pressure control valve is arranged on the hydraulic braking that oil hydraulic motor return line can realize working machine, and rational braking curve is set, obtain desirable braking ability.So the hydraulic coupler that the present invention proposes has application prospect widely.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. a hydraulic coupler, is characterized in that: comprise hydraulic-pressure pump (1), oil hydraulic motor (2), the first proportional pressure control valve (3), fuel tank (4), cooler (6), connecting pipeline (5), filter (7), the second proportional pressure control valve (8), selector valve (9); Described fuel tank (4) comprises fuel tank right sideboard (4-1) and fuel tank left sideboard (4-2), and described connecting pipeline (5) comprises the first connecting pipeline (5-1), the second connecting pipeline (5-2), the 3rd connecting pipeline (5-3), the 4th connecting pipeline (5-4), the 5th connecting pipeline (5-5), the 6th connecting pipeline (5-6), the 7th connecting pipeline (5-7), the 8th connecting pipeline (5-8);
Described hydraulic-pressure pump (1) comprises oil pump input shaft (1-1), oil pump suction mouth (1-3), oil pump oil outlet (1-6), oil pump leakage hole (1-7), described hydraulic-pressure pump (1) is installed on fuel tank (4) inner side, and be arranged on fuel tank right sideboard (4-1) by oil pump mounting screw (1-5), oil pump end face seal pad (1-2) is provided with between the end face of hydraulic-pressure pump (1) and fuel tank right sideboard (4-1), play seal action, prevent oil liquid leakage, described oil pump input shaft (1-1) is connected with prime mover by coupling, described oil pump suction mouth (1-3) is communicated with the work fluid in fuel tank (4) by oil pump suction tube (1-4), described oil pump leakage hole (1-7) is communicated with the second connecting pipeline (5-2) by oil pump drain pipeline (1-8), described oil pump oil outlet (1-6) is connected with the first connecting pipeline (5-1), and be connected with the motor filler opening (2-6) of oil hydraulic motor (2) and the first proportional pressure control valve oil inlet pipe (3-1) of the first proportional pressure control valve (3) by the first connecting pipeline (5-1), described oil hydraulic motor (2) comprises motor output shaft (2-1), motor return opening (2-3), motor filler opening (2-6), motor leakage hole (2-7), described oil hydraulic motor (2) is installed on fuel tank (4) inner side, and be arranged on fuel tank left sideboard (4-2) by motor mounting screw (2-5), motor end face sealing gasket (2-2) is provided with between the end face of oil hydraulic motor (2) and fuel tank left sideboard (4-2), play seal action, prevent oil liquid leakage, described motor output shaft (2-1) is connected with working machine by coupling, described motor return opening (2-3) is by motor return tube (2-4), 5th connecting pipeline (5-5) is communicated with the 6th connecting pipeline (5-6) and the 8th connecting pipeline (5-8) respectively, and then be connected with the filler opening of the second proportional pressure control valve (8) with selector valve (9), described motor leakage hole (2-7) is communicated with the second connecting pipeline (5-2) by motor drain pipeline (2-8), described motor filler opening (2-6) is connected with the first connecting pipeline (5-1), and be connected with the oil pump oil outlet (1-6) of hydraulic-pressure pump (1) and the first proportional pressure control valve oil inlet pipe (3-1) of the first proportional pressure control valve (3) by the first connecting pipeline (5-1), the filler opening of described first proportional pressure control valve (3) is connected with the first connecting pipeline (5-1) by the first proportional pressure control valve oil inlet pipe (3-1), and is connected with motor filler opening (2-6) with oil pump oil outlet (1-6) respectively by the first connecting pipeline (5-1), described fuel tank (4) internal storage has work fluid, the fuel tank right sideboard (4-1) of fuel tank (4) offers through hole, oil pump input shaft (1-1) passes from the through hole fuel tank right sideboard (4-1), the fuel tank left sideboard (4-2) of fuel tank (4) offers through hole, and motor output shaft (2-1) passes from the through hole fuel tank left sideboard (4-2),
The filler opening of described second proportional pressure control valve (8) is by the 6th connecting pipeline (5-6), 5th connecting pipeline (5-5), motor return tube (2-4) is connected with motor return opening (2-3), the return opening of described second proportional pressure control valve (8) is communicated with the 4th connecting pipeline (5-4) by the 7th connecting pipeline (5-7), and the work fluid be communicated with in fuel tank (4), the filler opening of described selector valve (9) is by the 8th connecting pipeline (5-8), 5th connecting pipeline (5-5), motor return tube (2-4) is connected with motor return opening (2-3), the return opening of described selector valve (9) is communicated with the 4th connecting pipeline (5-4) by the 9th connecting pipeline (5-9), and the work fluid be communicated with in fuel tank (4),
The filler opening of described cooler (6) is by after the 3rd connecting pipeline (5-3), the second connecting pipeline (5-2), oil pump leakage hole (1-7) and motor leakage hole (2-7) is communicated with respectively with motor drain pipeline (2-8) more respectively by oil pump drain pipeline (1-8), the oil outlet of described cooler (6) is connected with the filler opening of filter (7), and the oil outlet of described filter (7) is communicated with the work fluid in fuel tank (4) by the 4th connecting pipeline (5-4).
2. a kind of hydraulic coupler according to claim 1, is characterized in that: described hydraulic-pressure pump (1) is metering pump or variable displacement pump, when hydraulic-pressure pump (1) is for variable displacement pump, realizes the speed-regulating function of hydraulic coupler.
3. a kind of hydraulic coupler according to claim 1, is characterized in that: described oil hydraulic motor (2) is fixed displacement motor or variable displacement motor, when oil hydraulic motor (2) is for variable displacement motor, realizes the speed-regulating function of hydraulic coupler.
4. a kind of hydraulic coupler according to claim 1, is characterized in that: described first proportional pressure control valve (3) and the second proportional pressure control valve (8) are manual tune relief valve.
5. a kind of hydraulic coupler according to claim 1, is characterized in that: described cooler (6) is the one in water cooler, forced air cooler, refrigerant cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510419103.6A CN104976302A (en) | 2015-07-16 | 2015-07-16 | Hydraulic coupler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510419103.6A CN104976302A (en) | 2015-07-16 | 2015-07-16 | Hydraulic coupler |
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| Publication Number | Publication Date |
|---|---|
| CN104976302A true CN104976302A (en) | 2015-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510419103.6A Pending CN104976302A (en) | 2015-07-16 | 2015-07-16 | Hydraulic coupler |
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Application publication date: 20151014 |