CN104514766A - Central hydraulic pump and hydraulic oil circulating system thereof - Google Patents
Central hydraulic pump and hydraulic oil circulating system thereof Download PDFInfo
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- CN104514766A CN104514766A CN201410852977.6A CN201410852977A CN104514766A CN 104514766 A CN104514766 A CN 104514766A CN 201410852977 A CN201410852977 A CN 201410852977A CN 104514766 A CN104514766 A CN 104514766A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/26—Supply reservoir or sump assemblies
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/22—Synchronisation of the movement of two or more servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/042—Controlling the temperature of the fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
- F15B2211/31523—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source and an output member
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
A hydraulic oil circulating system comprises a high pressure oil tank, a low-pressure oil tank, a switch assembly and a plurality of pressure-regulating reversal valves. The hydraulic oil circulating system enables hydraulic oil of all hydraulic devices to flow into the low pressure oil tank through a pressure-relief feedback pipe orifice, and then to be pressed into the high pressure oil tank uniformly to achieve circulation continued distribution, the condition that one hydraulic oil circulating system can correspond to the hydraulic devices on different links is achieved, not only is the optimization of structural design facilitated, but also the integration level of the hydraulic oil circulating system is improved. Moreover, the utility model further provides a central hydraulic pump using the hydraulic oil circulating system.
Description
Technical field
The present invention relates to oil hydraulic pump technical field, particularly relate to a kind of central hydraulic pump and the hydraulic oil circulatory system thereof.
Background technique
Oil hydraulic pump is the dynamical element of hydraulic system, is to drive by driving mechanism, from hydraulic oil container, suck fluid, and mineralization pressure oil is discharged, and delivers to a kind of element of executive component (such as hydraulic component).
Due to the particularity of hydraulic component, many industries use all in a large number.But current hydraulic component is of a great variety, each producer can not carry out standard specification synergistically in function, specification, type, performance, parameter etc., so cause the phenomenon of a lot " with a hydraulic component, will configure a set of oil hydraulic pump ".So the hydraulic oil circulatory system of traditional oil hydraulic pump is generally the corresponding hydraulic component of a hydraulic oil circulatory system, level of integration is lower.
Summary of the invention
Based on this, be necessary for the problems referred to above, provide a kind of can the central hydraulic pump of the corresponding multiple hydraulic component of hydraulic oil circulatory system and the hydraulic oil circulatory system thereof.
A kind of hydraulic oil circulatory system, comprising:
Pressure-oil tank, the sidewall of described pressure-oil tank offers multiple high pressure oil outlet, and the top of described pressure-oil tank offers the first through hole;
Low-pressure reservoir, there is first end and the second end, described first end is inserted in described pressure-oil tank by described first through hole, the end opens of described first end has the second through hole, also dividing plate is provided with in described low-pressure reservoir, described dividing plate, between described first end and described second end, described dividing plate offers third through-hole, the sidewall of described low-pressure reservoir offers multiple low pressure oil and feeds back hole;
Switch block, comprise coil tension spring and isolation plunger tip, one end of described coil tension spring is arranged at described first end and is positioned on the hole wall of described second through hole, and described isolation plunger tip is arranged at the other end of described coil tension spring and can opens or close described third through-hole; And
Multiple pressure regulation selector valve, each pressure regulation selector valve comprises motor, spool and valve pocket housing, described motor can drive described spool to turn in described spool housing inward turning, the sidewall of described spool offers the first passage be interconnected and second channel, the sidewall of described spool also offers locating slot, described locating slot and described first passage and described second channel interval are arranged, retaining spring and location plunger tip is contained in described locating slot, the sidewall of described valve pocket housing is arranged at intervals with the high input voltage mouth of pipe, the High voltage output mouth of pipe and decompression feed back the mouth of pipe, the described high input voltage mouth of pipe is connected with described high pressure oil outlet, the described High voltage output mouth of pipe is used for being connected with hydraulic component, the described decompression feedback mouth of pipe feeds back hole with described low pressure oil and is connected.
Wherein in an embodiment, also comprise hydraulic tube connecting assembly, described hydraulic tube connecting assembly comprises elbow connection and nut, and described nut is arranged at the two ends of described elbow connection.
Wherein in an embodiment, the outer surface of described pressure-oil tank is provided with multiple heat radiation groove, described multiple heat radiation groove interval is arranged, and the outer surface that described pressure-oil tank offers high pressure oil outlet is plane.
Wherein in an embodiment, the sidewall of the first end that described low-pressure reservoir is inserted in described pressure-oil tank is provided with outside thread, is provided with internal thread in the first through hole of described pressure-oil tank, and described pressure-oil tank and described low-pressure reservoir are screwed.
Wherein in an embodiment, the first end that described low-pressure reservoir inserts described pressure-oil tank is taper, and the outer surface of described low-pressure reservoir is formed with ledge structure.
Wherein in an embodiment, be also provided with closing cap, by fastening screw trip bolt, described closing cap be covered on described second end, described closing cap and described low-pressure reservoir surround a collecting chamber.
Wherein in an embodiment, described pressure regulation selector valve also comprises sealing cover, and described sealing cover is covered on described valve pocket housing.
Wherein in an embodiment, described valve pocket housing is also provided with ladder, faced by described sealing cover, the one side of described valve pocket housing is provided with boss, and described boss and described ladder abut against.
Wherein in an embodiment, the sidewall of described ladder offers draw-in groove, the sidewall of described boss is provided with buckle, described buckle snaps in described draw-in groove, the madial wall of described valve pocket housing also offers stroke draw-in groove, and described location plunger tip can snap in described stroke draw-in groove.
A kind of central hydraulic pump, comprising:
Supporting base;
The hydraulic oil circulatory system as described in above any one; And
Piston, described piston reciprocatingly moves in described low-pressure reservoir, the hydraulic oil in described low-pressure reservoir is made to force described isolation plunger tip to oppress the compression of described coil tension spring, thus unlatching third through-hole, hydraulic oil is pressed in described pressure-oil tank via described third through-hole and described second through hole from described low-pressure reservoir successively, the bottom of described piston offers drainage recess, with described, described drainage recess reduces pressure that to feed back the mouth of pipe corresponding.
The above-mentioned hydraulic oil circulatory system at least has the following advantages:
The hydraulic oil circulatory system makes the hydraulic oil of each road hydraulic component be back in low-pressure reservoir through the decompression feedback mouth of pipe, do circulation in the unified pressure-oil tank of press-in again again to continue to distribute, realizing a hydraulic oil circulatory system can corresponding multiple hydraulic component be positioned on different link, not only be conducive to optimizing structure design, also improve the level of integration of the hydraulic oil circulatory system.
Above-mentioned central hydraulic pump is because apply the above-mentioned hydraulic oil circulatory system, therefore also have realize a hydraulic oil circulatory system can corresponding multiple hydraulic component be positioned on different link, not only be conducive to optimizing structure design, also improve the advantage of the level of integration of the hydraulic oil circulatory system.
Accompanying drawing explanation
Fig. 1 is the assembling schematic diagram of the central hydraulic pump in a mode of execution;
Fig. 2 is the decomposing schematic representation of the pump of central hydraulic shown in Fig. 1;
Fig. 3 is the decomposing schematic representation of Fig. 2 mesohigh fuel tank, low-pressure reservoir and switch block;
Fig. 4 is the partial sectional view after Fig. 3 assembles;
Fig. 5 is the assembling schematic diagram of Fig. 3 mesolow fuel tank and switch block;
Fig. 6 is the decomposing schematic representation of pressure regulation selector valve in Fig. 1;
Fig. 7 is the structural representation of sealing cover in Fig. 6;
Fig. 8 is the structural representation of spool in Fig. 6;
Fig. 9 is the structural representation of valve pocket housing in Fig. 6;
Figure 10 is the structural representation of hydraulic tube connecting assembly in Fig. 1;
Figure 11 is the assembling schematic diagram of driving mechanism and low-pressure reservoir in Fig. 1;
Figure 12 is the decomposing schematic representation of Figure 11;
Figure 13 is the structural representation of closing cap in Figure 11;
Figure 14 is the decomposing schematic representation of Figure 11 mesolow fuel tank and piston rod part;
Figure 15 is the structural representation of piston actuated rotating disk in Figure 14;
Figure 16 is the structural representation of piston in Figure 14.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.Set forth a lot of detail in the following description so that fully understand the present invention.But the present invention can be much different from alternate manner described here to implement, those skilled in the art can when without prejudice to doing similar improvement when intension of the present invention, therefore the present invention is by the restriction of following public concrete enforcement.
It should be noted that, when element is called as " being fixed on " another element, directly can there is element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be directly connected to another element or may there is centering elements simultaneously.Term as used herein " vertical ", " level ", "left", "right" and similar statement just for illustrative purposes, do not represent it is unique mode of execution.
Unless otherwise defined, all technology used herein and scientific terminology are identical with belonging to the implication that those skilled in the art of the present invention understand usually.The object of term used in the description of the invention herein just in order to describe specific embodiment, is not intended to be restriction the present invention.Term as used herein " and/or " comprise arbitrary and all combinations of one or more relevant Listed Items.
Referring to Fig. 1 and Fig. 2, is the central hydraulic pump 10 in a mode of execution, can realize the multiple hydraulic component (not shown) of control that a central hydraulic pump 10 is relatively independent.This central hydraulic pump 10 comprises supporting base 110, pressure-oil tank 200, low-pressure reservoir 300, switch block 400, multiple pressure regulation selector valve 500, hydraulic tube connecting assembly 600 and driving mechanism 700.
The roughly rounded structure of supporting base 110, supporting base 110 has been mainly used in supporting and fixation.Pressure-oil tank 200 and pressure regulation selector valve 500 are arranged on supporting base 110.Particularly, can offer accepting groove (figure does not mark) at the middle part of supporting base 110, pressure-oil tank 200 and pressure regulation selector valve 500 are arranged in accepting groove (figure does not mark).Supporting base 110 also offers positioning hole 111, is arranged in positioning hole 111 so that central hydraulic pump 10 is fixed on external object (such as chassis) by external fastening.External fastening can be the fastening piece such as screw or bolt, such as hex screw.
Specific in present embodiment, also comprise cover cap 120, cover cap 120 covers on supporting base 110, and cover cap 120 and supporting base 110 form a containing space 130 jointly.Pressure-oil tank 200, low-pressure reservoir 300, switch block 400, multiple pressure regulation selector valve 500 and driving mechanism 700 are all contained in this containing space 130.The end face of cover cap 120 is provided with projection 121, the edge surface of supporting base 110 offers the hole 112 matched with projection 121, firmly to be covered on supporting base 110 by cover cap 120.
See also Fig. 3 and Fig. 4, pressure-oil tank 200 is arranged on supporting base 110.The as a whole stamping forming structure of pressure-oil tank 200, higher pressure can be born in inside.The sidewall of pressure-oil tank 200 offers multiple spaced high pressure oil outlet 210, the hydraulic oil in pressure-oil tank 200 is exported by high pressure oil outlet 210.The top of pressure-oil tank 200 also offers the first through hole 220, first through hole 220 and inserts for one end of low-pressure reservoir 300, is also provided with internal thread in the first through hole 220.The outer surface of pressure-oil tank 200 is also provided with multiple heat radiation groove 230, multiple heat radiation groove 230 interval is arranged.The heat radiation groove 230 arranged can increase heat diffusion area, improves the radiating efficiency of pressure-oil tank 200.Particularly, each high pressure oil outlet 210 is between adjacent two heat radiation grooves 230, and pressure-oil tank 200 offers the outer surface 240 of high pressure oil outlet 210 for plane, to be identical with hydraulic tube connecting assembly 600.
See also Fig. 5, low-pressure reservoir 300 is roughly in tubular structure.The material of the madial wall of low-pressure reservoir 300 can be steel, has wear-resisting characteristic, can certainly have the material of wear-resisting property for other.The enclosure material of low-pressure reservoir 300 can be aluminum alloy, dispels the heat to facilitate low-pressure reservoir 300.Low-pressure reservoir 300 has first end 310 and the second end 320, and first end 310 is inserted in pressure-oil tank 200 by the first through hole 220.The sidewall of the first end 310 that low-pressure reservoir 300 is inserted in pressure-oil tank 200 is provided with outside thread, the internal thread arranged in first through hole 220 of outside thread and pressure-oil tank 200 is screwed, realize pressure-oil tank 200 to be screwed with low-pressure reservoir 300, assemble simply and low-pressure reservoir 300 not easily disengaging from pressure-oil tank 200.The end opens of first end 310 has the second through hole 311, and the hydraulic oil in low-pressure reservoir 300 is entered in pressure-oil tank 200 by the second through hole 311.Also be provided with dividing plate 330 in low-pressure reservoir 300, dividing plate 330, between first end 310 and the second end 320, dividing plate 330 offers third through-hole (figure does not mark), is controlled the closure or openness of third through-hole by switch block 400.
Specific in present embodiment, the sidewall of low-pressure reservoir 300 offers low pressure oil and feed back hole 340.It is multiple that low pressure oil feeds back the quantity in hole 340, and what multiple low pressure oil fed back interval, hole 340 is distributed in sidewall.Low-pressure reservoir 300 offers low pressure oil and feeds back the outer surface 350 in hole 340 for plane, to be identical with hydraulic tube connecting assembly 600.Particularly, can also be communicated with hydraulic tube connecting assembly 600 and low pressure oil feedback hole 340 by feeding back conduit 360, the one end feeding back conduit 360 feeds back hole 340 with low pressure oil and is communicated with, and the other end is communicated with hydraulic tube connecting assembly 600.
Specific in present embodiment, the first end 310 that low-pressure reservoir 300 inserts pressure-oil tank 200 is cone structure, is formed and is similar to funnel shaped, is conducive to guiding the hydraulic oil in low-pressure reservoir 300 smoothly and entering pressure-oil tank 200 equably.The outer surface of low-pressure reservoir 300 is also formed with ledge structure 370, and ledge structure 370 abuts with the top of pressure-oil tank 200, prevents low-pressure reservoir 300 from all inserting pressure-oil tank 200.
See also Figure 13, the end of the second end 320 of low-pressure reservoir 300 is also provided with closing cap 380, and closing cap 380 is for forming a collecting chamber (not shown) with low-pressure reservoir 300.Particularly, tapped hole (not shown) can be offered on closing cap 380, at the end opens tapped hole 321 of the second end 320 of low-pressure reservoir 300, then by fastening screw trip bolt 390, closing cap 380 is covered on the second end 320 of low-pressure reservoir 300.The end end face of closing cap 380 also offering the first semicircle axis hole 381, second end 320 also offers the second semicircle axis hole 322, first semicircle axis hole 381 and matches with the second semicircle axis hole 322 and form circular shaft hole.Particularly, heat radiation groove (figure does not mark) can also be set on the outer side wall of closing cap 380 and low-pressure reservoir 300, with increasing heat radiation area, improve radiating efficiency.
See also Fig. 5, switch block 400 comprises the isolation plunger tip 420 that elasticity is arranged, and isolation plunger tip 420 can be opened or close third through-hole.Particularly, switch block 400 comprises coil tension spring 410, isolation plunger tip 420 and location volution 430.One end of coil tension spring 410 is arranged at the first end 310 of low-pressure reservoir 300 and is positioned on the hole wall of the second through hole 311.Particularly, coil tension spring 410 can be fixedly installed on the hole wall of the second through hole 311.Such as, the hole wall of the second through hole 311 of low-pressure reservoir 300 extends in hole, and form positioning convex ring, coil tension spring 410 is fixedly installed on positioning convex ring.Location volution 430 is arranged on the hole wall of third through-hole (figure does not mark), and the effect of location volution 430 is the upward stroke and the locking isolation plunger tip 420 that stop isolation plunger tip 420.Certainly, in other embodiments, location volution 430 can also be omitted.
Isolation plunger tip 420 is arranged at the other end of coil tension spring 410 and can opens or close third through-hole (figure does not mark).When oil in low-pressure reservoir 300 is pressed into pressure-oil tank 200, hydraulic oil produces contention effect to isolation plunger tip 420, isolation plunger tip 420 forces coil tension spring 410 to be compressed, third through-hole (figure does not mark) is unlocked, and hydraulic oil enters in pressure-oil tank 200 from low-pressure reservoir 300 via third through-hole and the second through hole 311 successively.When hydraulic oil enters after in pressure-oil tank 200 completely, the powerful static pressure in low-pressure reservoir 300 of static pressure in pressure-oil tank 200, under the acting in conjunction power of the hydraulic oil of isolation plunger tip 420 in coil tension spring 410 and pressure-oil tank 200, recover to close third through-hole, the hydraulic oil of pressure-oil tank 200 inside cannot reflux and enter in low-pressure reservoir 300.
See also Fig. 6 to Fig. 9, multiple pressure regulation selector valve 500 is arranged at intervals on supporting base 110.Particularly, each pressure regulation selector valve 500 comprises motor 510, sealing cover 520, spool 530 and valve pocket housing 540.Motor 510 is high precisely actuating motor, and motor 510 actuatable valve core 530 rotates in valve pocket housing 540.Sealing cover 520 is covered on valve pocket housing 540, and sealing cover 520 and valve pocket housing 540 form a confined space, and spool 530 is contained in this confined space.Particularly, sealing cover 520 is covered on valve pocket housing 540 by fastening screw 550.Such as, tapped hole 521 can be offered on sealing cover 520, valve pocket housing 540 is offered tapped hole 541, then fastening screw 550 is arranged in two tapped holes successively and sealing cover 520 can be covered on valve pocket housing 540.
Particularly, can also arrange ladder 542 on valve pocket housing 540, faced by sealing cover 520, the one side of valve pocket housing 540 arranges boss 523, and boss 523 and ladder 542 abut against, and excessively stretch in valve pocket housing 540 to prevent sealing cover 520.The sidewall of ladder 542 offers draw-in groove 543, the sidewall of boss 523 is provided with buckle 524, buckle 524 snaps in draw-in groove 543.Draw-in groove 543 comprises steering channel 5431 and locking slot 5432, and steering channel 5431 and locking slot 5432 are angularly arranged, such as, for right angle is arranged in present embodiment.Certainly, can also arrange in acute angle, prevent buckle 524 from deviating from easily to fasten buckle 524.Buckle 524 enters in locking slot 5432 via steering channel 5431 to lock boss 523.
The sidewall of spool 530 offers the first passage 531 and second channel 532 that are interconnected, first passage 531 and second channel 532 pass through for hydraulic oil, and first passage 531 and second channel 532 are in L-type structure.The sidewall of spool 530 also offers locating slot 533, and locating slot 533 and first passage 531 and second channel 532 interval are arranged, and namely locating slot 533 is not all communicated with first passage 531 and the second through hole.The location plunger tip 536 that elasticity is arranged is contained in locating slot 533.Particularly, contain positioning ring 534, retaining spring 535 and location plunger tip 536, the two ends of retaining spring 535 are connected on location plunger tip 536 and positioning ring 534, and positioning ring 534 is fixedly installed on the bottom of locating slot 533.Certainly, in other embodiments, positioning ring 534 can also be omitted, directly retaining spring 535 is arranged at the bottom of locating slot 533.Locating slot 533 on spool 530 is unidirectional closed circuit, even if so retaining spring 535 is not enough to compress location plunger tip 536, also cannot flow after hydraulic oil arrival is closed circuit again.
The sidewall of valve pocket housing 540 is arranged at intervals with the high input voltage mouth of pipe 544, the High voltage output mouth of pipe 545 and decompression and feeds back the mouth of pipe 546.The high input voltage mouth of pipe 544 is connected with high pressure oil outlet 210, such as, can directly be connected with high pressure oil outlet 210.The High voltage output mouth of pipe 545 for being connected with hydraulic component, such as, can be connected with hydraulic component by hydraulic tube connecting assembly 600.The decompression feedback mouth of pipe 546 feeds back hole 340 with low pressure oil and is connected.Such as can feed back hole 340 by hydraulic tube connecting assembly 600 and low pressure oil to be connected.The madial wall of valve pocket housing 540 also offers stroke draw-in groove 547, and location plunger tip 536 can snap in stroke draw-in groove 547.
When central oil hydraulic pump 10 is in running order, hydraulic oil is pressed in pressure-oil tank 200 from low-pressure reservoir 300, and then enter pressure regulation selector valve 500 from the high pressure oil outlet 210 of pressure-oil tank 200 via the high input voltage mouth of pipe 544, then by the High voltage output mouth of pipe 545 input hydraulic pressure device.When having the sensor on a certain hydraulic component link to return to exceed upper and lower numerical value, motor 510 drives the spool 530 of the pressure regulation selector valve 500 be connected with this hydraulic component to rotate, the position of the mouth of pipe 546 is fed back relative to the adjustment high input voltage mouth of pipe 544, the High voltage output mouth of pipe 545 or decompression to make spool 530, and then the flow direction of adjustment hydraulic oil, and pressure regulation selector valve 500 on other hydraulic component link is unaffected.
Such as, when the sensor feedback of the hydraulic component on a certain link needs pressurization, the spool 530 that then motor 510 orders about the pressure regulation selector valve 500 be connected with this hydraulic component rotates, the first passage 531 of spool 530 is docked with the high input voltage mouth of pipe 544 of valve pocket housing 540, second channel 532 docks with the High voltage output mouth of pipe 545, thus hydraulic oil is constantly entered in hydraulic component via the high input voltage mouth of pipe 544, second channel 532, first passage 531 and the High voltage output mouth of pipe 545 from pressure-oil tank 200.Now, the decompression feedback mouth of pipe 546 is closed in closed condition by location plunger tip 536.
When the sensor feedback of the hydraulic component on a certain link needs decompression, the spool 530 that then motor 510 orders about this pressure regulation selector valve 500 rotates, the second channel 532 of spool 530 is docked with the High voltage output mouth of pipe 545 of valve pocket housing 540, first passage 531 feeds back the mouth of pipe 546 with decompression and docks, hydraulic oil, under the effect of low-pressure reservoir 300, is again pressed into pressure-oil tank 200 after being inhaled into low-pressure reservoir 300 does sub-distribution again from hydraulic component via the High voltage output mouth of pipe 545, second channel 532, first passage 531 and the decompression feedback mouth of pipe 546.Now, location plunger tip 536 is in the stroke draw-in groove 547 of valve pocket housing 540, and the high input voltage mouth of pipe 544 is closed by the outer side wall of spool 530, and locking is in closed condition.
When locomotive needs to berth static, spool 530 can rotate and be closed state to making the high input voltage mouth of pipe 544, the High voltage output mouth of pipe 545 and decompression feed back the mouth of pipe 546 by motor 510.Such as, location plunger tip 536 docks with the High voltage output mouth of pipe 545, enters in hydraulic component to stop hydraulic oil.First passage 531 feeds back the mouth of pipe 546 with decompression and docks, and second channel 532 docks with stroke draw-in groove 547.The High voltage output mouth of pipe 545 docks with the solid side walls of spool 530.
In practical application, the numerical signal that can transmit according to the sensor on the link of hydraulic component, control the reaction action that Millisecond made by motor, thus regulating spool 530 rotates in valve pocket housing 540, reach the object of stepless speed regulation, adjustment, connection or closedown, control flow and the direction of every road hydraulic oil accurately.
See also Figure 10, also comprise multiple hydraulic tube connecting assembly 600, the High voltage output mouth of pipe 545 that hydraulic tube connecting assembly 600 may be used for being communicated with each pressure regulation selector valve 500 and each hydraulic component, feed back hole 340 for the low pressure oil being communicated with low-pressure reservoir 300 and feeds back the mouth of pipe 546 with the decompression of pressure regulation selector valve 500, certainly, also may be used for connecting high pressure oil outlet 210 and the high input voltage mouth of pipe 544.
Each hydraulic tube connecting assembly 600 comprises elbow connection 610, nut 620, middle joint 630 and emptyingly adds liquid screw 640.Elbow connection 610 is roughly in L-type structure, and the two ends of elbow connection 610 are provided with nut 620.Nut 620 is embedded moving fastening, and knot that can be undone by a pull in the two ends of elbow connection 610, and can do 360 ° of rotations, for screwing the linking parts such as middle joint 630 and hydraulic pipe.The emptying liquid screw 640 that adds is arranged at elbow connection 610 jiaos of crooks, for overhauling, carry out the maintenance measures such as air is emptying, annex solution force feed to hydraulic tube connecting assembly 600, ensures the normal operation of hydraulic component.
Above-mentioned pressure-oil tank 200, low-pressure reservoir 300, switch block 400 and pressure regulation selector valve 500 can form the hydraulic oil circulatory system.The hydraulic oil circulatory system can also comprise hydraulic tube connecting assembly 600.The hydraulic oil circulatory system makes the hydraulic oil of each road hydraulic component be back in low-pressure reservoir 300 through the decompression feedback mouth of pipe 546, do circulation in the unified pressure-oil tank 200 of press-in again again to continue to distribute, realizing a hydraulic oil circulatory system can corresponding multiple hydraulic component be positioned on different link, not only be conducive to optimizing structure design, also improve the level of integration of the hydraulic oil circulatory system.
See also Figure 11 to Figure 16, driving mechanism 700 is mainly central hydraulic pump 10 and provides power, orders about piston 740 and reciprocatingly moves along in low-pressure reservoir 300, thus by the hydraulic oil press-in pressure-oil tank 200 in low-pressure reservoir 300.Driving mechanism 700 comprises power source, transmitting assemblies 720, piston rod part 730 and piston 740.Specific in present embodiment, power source can be unidirectional drive motor 710, and unidirectional drive motor 710, under stabilized power supply, can make low turn of high pulling torque, constant speed rotary.The motor shaft 711 of unidirectional drive motor 710 can be hex-shaped shaft, and unidirectional drive motor 710 drives hex-shaped shaft to make one-way rotation.
Particularly, driving mechanism 700 orders about piston 740 by transmitting assemblies 720 and piston rod part 730 and reciprocatingly moves along in low-pressure reservoir 300.Transmitting assemblies 720 comprises the first screw rod 721, first driving gear 722, second screw rod 723 and the second driving gear 724.First screw rod 721 is sheathed on the motor shaft 711 of unidirectional drive motor 710, and the first screw rod 721 is the screw rod supporting with motor shaft 711.First screw rod 721 is cored screw, and cored screw is sheathed on motor shaft 711.Particularly, set screw 7211 can also be set in the end of the first screw rod 721, to be firmly sheathed on motor shaft 711 by the first screw rod 721.First driving gear 722 is meshed with the first screw rod 721, first driving gear 722 is sheathed on the second screw rod 723, to make the first driving gear 722 and the second screw rod 723 coaxial rotation, the second driving gear 724 is meshed with the second screw rod 723, forms two-stage gear/screw rod linkage structure.
Because driving mechanism 700 adopts two-stage gear/screw rod linkage structure, and power source is unidirectional drive motor 710, so in any case, whole driving mechanism 700 is all in irreversible state, effectively prevent and cause recoil because internal pressure is too high, the danger causing component of machine to drive in the wrong direction causing other interacted systems to collapse.Particularly, positioning screw cap 7221 can also be set, come off from the second screw rod 723 to prevent the first driving gear 722.
Particularly, can also arrange fixed support 725, fixed support 725 is for component such as supporting motive force source, the first screw rod 721, second screw rods 723.Fixed support 725 has two half supports 7251 cooperatively interacted, and every half support 7251 all has circular arc side 7252,7252, two, circular arc side and matches, and fixed support 725 is fastened on the outer side wall of low-pressure reservoir 300.Offer tapped hole 7253 by half support 7251 wherein, utilize threaded fastener 7254 to be arranged in tapped hole 7253, to be arranged on fixed support 725 by unidirectional drive motor 710.Second screw rod 723 is arranged on fixed support 725, and arranges thread bush 7231 respectively in the end of the second screw rod 723, to be firmly arranged on fixed support 725 by the second screw rod 723.
Piston rod part 730 comprises piston actuated rotating disk 731, piston rod 732 and connecting rod base 733.The quantity of piston actuated rotating disk 731 is two, is connected between two piston actuated rotating disks 731 by rotating disk pin 7311.Each piston actuated rotating disk 731 offers multiple through hole, rotating disk pin 7311 be arranged on wherein in two relative through holes to connect two piston actuated rotating disks 731.Each piston actuated rotating disk 731 also arranges turntable shaft 7312, and turntable shaft 7312 stretches out in low-pressure reservoir 300.Particularly, the circular shaft hole that turntable shaft 7312 is formed by the second semicircle axis hole 322 in low-pressure reservoir 300 and the first semicircle axis hole 381 on closing cap 380 stretches out in low-pressure reservoir 300.Second driving gear 724 is sheathed on one end that turntable shaft 7312 stretches out in low-pressure reservoir 300.
One end of piston rod 732 is arranged on rotating disk pin 7311, and the other end is connected with piston 740.Connecting rod base 733 is arranged on piston 740.Specific in present embodiment, the other end of piston rod 732 is connected with piston 740 by connecting rod base 733.One end of piston rod 732 offers through hole, and rotating disk pin 7311 is arranged in through hole, moves with the rotation of piston actuated rotating disk 731 to make piston rod 732.The other end of piston rod 732 offers through hole, connecting rod base 733 is formed with the lug at two intervals, lug offers through hole, then match be arranged in the through hole on the through hole of piston rod and lug successively by connecting-rod bolts (male) and connecting-rod bolts (mother) after, piston rod 732 can be connected with connecting rod base 733.
The bottom of piston 740 is formed with poly-pressure pelvic cavity 741, and the hydraulic oil in low-pressure reservoir 300 is at the effect lower compression isolation plunger tip 420 of poly-pressure pelvic cavity 741.The bottom terminal ends of piston 740 also offers drainage recess 742, when piston 740 moves upward in low-pressure reservoir 300, can form a vacuum low-pressure district in low-pressure reservoir 300, the hydraulic oil that decompression feeds back the mouth of pipe 546 is drawn in low-pressure reservoir 300 by vacuum low-pressure district from the drainage recess 742 of piston.Particularly, the quantity of drainage recess 742 can be multiple, the bottom terminal ends being distributed in piston 740 at multiple drainage recess 742 interval.The diameter of drainage recess 742 can equal the diameter that low pressure oil feeds back hole 340, and when just moving to low-pressure reservoir 300 upward stroke terminal surface to make piston 740, hydraulic oil just enters in low-pressure reservoir 300 from drainage recess 742.
When piston 740 moves downward, drainage recess 742 is plumb cut incision from the madial wall of low-pressure reservoir 300, and now hydraulic oil cannot be back in the decompression feedback mouth of pipe 546.Under the poly-pressure pelvic cavity 740 centripetal force effect of piston base, equably hydraulic oil is advanced downwards.Because the moment produced after unidirectional drive motor 710 driven plunger 740 is greater than the pressure of low-pressure reservoir 300 inside and pressure-oil tank 200 inside, make hydraulic oil force isolation plunger tip 420 to oppress coil tension spring 410 by force backward indent, make hydraulic oil be able to enter in pressure-oil tank 200 via the second through hole 311 from third through-hole.
The sidewall of piston 740 also offers circular groove 743.The quantity of circular groove 743 is multiple, and multiple circular groove 743 is arranged along the axially spaced-apart of piston 740.The object arranging circular groove 743 is for sheathed seal ring, and seal ring is for ensureing sealing between piston 740 and low-pressure reservoir 300.The top of piston 740 also offers escape groove 744, and piston actuated rotating disk 731, piston rod 732 and connecting rod base 733 are all contained in escape groove 744.When piston actuated rotating disk 731 drives piston rod 732 to move along a curved path, piston 740 makes linear reciprocating motion under the effect of piston rod 732.When piston 740 moves to upper end (i.e. second end) of low-pressure reservoir 300, the escape groove 744 on the top of piston 740 can allow piston actuated rotating disk 731 pass through thus proceed next do action.
Above-mentioned central hydraulic pump 10 at least has the following advantages:
Unidirectional drive motor 710 orders about piston 740 and moves up, and the hydraulic oil in hydraulic component is back in low-pressure reservoir 300 by pressure regulation selector valve 500; Unidirectional drive motor 710 orders about piston 740 and moves down, hydraulic oil in low-pressure reservoir 300 forces isolation plunger tip 420 to compress coil tension spring 410, hydraulic oil in low-pressure reservoir 300 enters in pressure-oil tank 200 by third through-hole and the second through hole 311, pressure now in pressure-oil tank 200 is greater than the pressure of low-pressure reservoir 300, isolation plunger tip 420 closes third through-hole, and the hydraulic oil in pressure-oil tank 200 is by pressure regulation selector valve 500 input hydraulic pressure device.The sidewall of pressure-oil tank 200 offers multiple spaced high pressure oil outlet 210, the sidewall of low-pressure reservoir 300 offers multiple spaced low pressure oil and feed back hole 340, also be provided with multiple pressure regulation selector valve 500, the high input voltage mouth of pipe 544 of each pressure regulation selector valve 500 is connected with high pressure oil outlet 210, the High voltage output mouth of pipe 545 is connected with hydraulic component, the decompression feedback mouth of pipe 546 feeds back hole 340 with low pressure oil and is connected, each pressure regulation selector valve 500 corresponds to a hydraulic component, different according to the pressure that different hydraulic component needs, motor orders about spool 530 and rotates in valve pocket housing 540, change first passage 531 and second channel 532 and the high input voltage mouth of pipe 544 on valve pocket housing 540, the High voltage output mouth of pipe 545 and decompression feed back the relative position of the mouth of pipe 546, allow or stop hydraulic oil from pressure-oil tank 200 input hydraulic pressure device, hydraulic oil is back in low-pressure reservoir 300 from hydraulic component, thus realize the hydraulic component action that employing central hydraulic pump 10 gets final product the relatively independent multiple difference in functionality of control, reduce Installation and Debugging, the difficulty of repair and maintenance simultaneously, also improve the validity that long term device is run, Security and working life.
Specific in present embodiment, this central hydraulic pump 10 can be applicable in digital locomotive, the low-pressure reservoir 300 of central hydraulic pump 10 is offered altogether 12 low pressure oil and feed back hole 340, pressure-oil tank 200 is offered altogether 12 high pressure oil outlets 210,12 pressure regulation selector valves 500 are set, to form 12 single channel, the hydraulic component that control 16 of dividing into groups respectively is separate.
Wherein 1st ~ 8 tunnels are single channel single control, for independent 8 hydraulic components controlling diverse location in suspension system.9th tunnel is the control of single channel group, and for controlling the synchronous operation of 2 hydraulic components of locomotive hatch door, it is opening/closing to carry out car door as required, the functions such as angle adjustment.10th tunnel is the control of single channel group, for controlling 2 hydraulic component synchronous operations on driver's seat safety protection hurdle, carries out the pressure function of safety protection to driver.
11st tunnel is the control of single channel group, for controlling the synchronous operation of 2 hydraulic components of locomotive brake, except various energy regenerating implement can not retardation except carry out emergency braking brake function as required.12nd tunnel is the control of single channel group, protects the synchronous operation of 2 hydraulic components of thick stick for controlling headstock front end, carries out the automatic control changeable of locomotive entering angle.Certainly, in practical operation, can be different with functional requirement according to vehicle, increase or reduce single channel and arrange, to reduce car load power consumption and to save component cost.
The above embodiment only have expressed several mode of execution of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a hydraulic oil circulatory system, is characterized in that, comprising:
Pressure-oil tank, the sidewall of described pressure-oil tank offers multiple high pressure oil outlet, and the top of described pressure-oil tank offers the first through hole;
Low-pressure reservoir, there is first end and the second end, described first end is inserted in described pressure-oil tank by described first through hole, the end opens of described first end has the second through hole, also dividing plate is provided with in described low-pressure reservoir, described dividing plate, between described first end and described second end, described dividing plate offers third through-hole, the sidewall of described low-pressure reservoir offers multiple low pressure oil and feeds back hole;
Switch block, comprise coil tension spring and isolation plunger tip, one end of described coil tension spring is arranged at described first end and is positioned on the hole wall of described second through hole, and described isolation plunger tip is arranged at the other end of described coil tension spring and can opens or close described third through-hole; And
Multiple pressure regulation selector valve, each pressure regulation selector valve comprises motor, spool and valve pocket housing, described motor can drive described spool to turn in described spool housing inward turning, the sidewall of described spool offers the first passage be interconnected and second channel, the sidewall of described spool also offers locating slot, described locating slot and described first passage and described second channel interval are arranged, retaining spring and location plunger tip is contained in described locating slot, the sidewall of described valve pocket housing is arranged at intervals with the high input voltage mouth of pipe, the High voltage output mouth of pipe and decompression feed back the mouth of pipe, the described high input voltage mouth of pipe is connected with described high pressure oil outlet, the described High voltage output mouth of pipe is used for being connected with hydraulic component, the described decompression feedback mouth of pipe feeds back hole with described low pressure oil and is connected.
2. the hydraulic oil circulatory system according to claim 1, is characterized in that, also comprises hydraulic tube connecting assembly, and described hydraulic tube connecting assembly comprises elbow connection and nut, and described nut is arranged at the two ends of described elbow connection.
3. the hydraulic oil circulatory system according to claim 1, is characterized in that, the outer surface of described pressure-oil tank is provided with multiple heat radiation groove, and described multiple heat radiation groove interval is arranged, and the outer surface that described pressure-oil tank offers high pressure oil outlet is plane.
4. the hydraulic oil circulatory system according to claim 1, it is characterized in that, the sidewall of the first end that described low-pressure reservoir is inserted in described pressure-oil tank is provided with outside thread, is provided with internal thread in the first through hole of described pressure-oil tank, and described pressure-oil tank and described low-pressure reservoir are screwed.
5. the hydraulic oil circulatory system according to claim 1, is characterized in that, the first end that described low-pressure reservoir inserts described pressure-oil tank is taper, and the outer surface of described low-pressure reservoir is formed with ledge structure.
6. the hydraulic oil circulatory system according to claim 1, is characterized in that, be also provided with closing cap, by fastening screw trip bolt, described closing cap is covered on described second end, and described closing cap and described low-pressure reservoir surround a collecting chamber.
7. the hydraulic oil circulatory system according to claim 1, is characterized in that, described pressure regulation selector valve also comprises sealing cover, and described sealing cover is covered on described valve pocket housing.
8. the hydraulic oil circulatory system according to claim 7, is characterized in that, described valve pocket housing is also provided with ladder, and faced by described sealing cover, the one side of described valve pocket housing is provided with boss, and described boss and described ladder abut against.
9. the hydraulic oil circulatory system according to claim 1, it is characterized in that, the sidewall of described ladder offers draw-in groove, the sidewall of described boss is provided with buckle, described buckle snaps in described draw-in groove, the madial wall of described valve pocket housing also offers stroke draw-in groove, and described location plunger tip can snap in described stroke draw-in groove.
10. a central hydraulic pump, is characterized in that, comprising:
Supporting base;
The hydraulic oil circulatory system as in one of claimed in any of claims 1 to 9; And
Piston, described piston reciprocatingly moves in described low-pressure reservoir, the hydraulic oil in described low-pressure reservoir is made to force described isolation plunger tip to oppress the compression of described coil tension spring, thus unlatching third through-hole, hydraulic oil is pressed in described pressure-oil tank via described third through-hole and described second through hole from described low-pressure reservoir successively, the bottom of described piston offers drainage recess, with described, described drainage recess reduces pressure that to feed back the mouth of pipe corresponding.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410852977.6A CN104514766B (en) | 2014-12-26 | 2014-12-26 | Central hydraulic pump and hydraulic oil blood circulation thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410852977.6A CN104514766B (en) | 2014-12-26 | 2014-12-26 | Central hydraulic pump and hydraulic oil blood circulation thereof |
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| CN104514766A true CN104514766A (en) | 2015-04-15 |
| CN104514766B CN104514766B (en) | 2016-06-29 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE881577R (en) * | 1980-02-06 | 1980-05-30 | Envirowal A S B L | DEVICE FOR CONTROLLING THERMAL POLLUTION OF RIVERS, BODIES OF WATER AND THE LIKE |
| CN2434464Y (en) * | 2000-09-28 | 2001-06-13 | 文近丞 | Hydraulic power transmission device |
| US20100024895A1 (en) * | 2001-07-27 | 2010-02-04 | Parsons Natan E | System and method for converting manually operated flush valves |
| CN103518092A (en) * | 2011-05-05 | 2014-01-15 | 沃特世科技公司 | High pressure fluidic switching valve having variable pressure loading |
| US8720486B2 (en) * | 2011-02-21 | 2014-05-13 | Fujikoki Corporation | Valve apparatus |
-
2014
- 2014-12-26 CN CN201410852977.6A patent/CN104514766B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE881577R (en) * | 1980-02-06 | 1980-05-30 | Envirowal A S B L | DEVICE FOR CONTROLLING THERMAL POLLUTION OF RIVERS, BODIES OF WATER AND THE LIKE |
| CN2434464Y (en) * | 2000-09-28 | 2001-06-13 | 文近丞 | Hydraulic power transmission device |
| US20100024895A1 (en) * | 2001-07-27 | 2010-02-04 | Parsons Natan E | System and method for converting manually operated flush valves |
| US8720486B2 (en) * | 2011-02-21 | 2014-05-13 | Fujikoki Corporation | Valve apparatus |
| CN103518092A (en) * | 2011-05-05 | 2014-01-15 | 沃特世科技公司 | High pressure fluidic switching valve having variable pressure loading |
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| CN104514766B (en) | 2016-06-29 |
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Effective date of registration: 20161230 Address after: 523808 Guangdong province Dongguan city Wangniudun Chung Industrial Zone Five Patentee after: Dongguan city Tchien Electronics Co. Ltd. Address before: Industrial Road, Songshan Lake high tech Industrial Development Zone 523808 Guangdong city of Dongguan province No. 6 Building 2 room 506-14 Patentee before: DONGGUAN HIWIN INFORMATION TECHNOLOGY CO., LTD. |
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