CN104019084A - Hydraulic rotation buffering system - Google Patents
Hydraulic rotation buffering system Download PDFInfo
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- CN104019084A CN104019084A CN201410245849.5A CN201410245849A CN104019084A CN 104019084 A CN104019084 A CN 104019084A CN 201410245849 A CN201410245849 A CN 201410245849A CN 104019084 A CN104019084 A CN 104019084A
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Abstract
The invention discloses a hydraulic rotation buffering system. The hydraulic rotation buffering system comprises a buffering system body. According to the technical scheme, the hydraulic rotation buffering system is characterized in that the buffering system body comprises a system inlet and outlet oil way A1 and a system inlet and outlet oil way B1, a rotation inlet and outlet oil way A2, a rotation inlet and outlet oil way B2, a first check valve, a second check valve, a shuttle valve and a slide valve with speed controlled, two oil inlets of the shuttle valve are connected with the A1 and the B1 respectively, an oil outlet of the shuttle valve is connected with an oil outlet pipeline, the slide valve is connected with the A1, the B1, the A2 and the B2, the system inlet and outlet oil way A1 is connected with the input end of the first check valve, the output end of the first check valve is connected with both the input end of the slide valve and the rotation inlet and outlet oil way A2, the system inlet and outlet oil way B1 is connected with the input end of the second check valve, the output end of the second check valve is connected with both the input end of the slide valve and the rotation inlet and outlet oil way B2, and the rotation inlet and outlet oil way A2 and the rotation inlet and outlet oil way B2 are connected. A hydraulic rotation system can be also buffered stably through the hydraulic rotation buffering system even when only hydraulic buffer is used.
Description
Technical field
The present invention relates to a kind of buffer system that is applied to band brake in hydraulic gyration operating mode, more particularly, it relates to a kind of hydraulic gyration buffer system.
Background technique
On the hydraulic gyration equipment of the every field such as engineering machinery, boats and ships, building, its mode of operations such as such as high-altitude operation vehicle, fire-fighting truck, hoist, material distributing machine, boats and ships crane are that hydraulic permeability reversing gear drives worktable pivoted arm clockwise and anticlockwise revolution, control worktable pivoted arm skidding by break and two kinds of modes of equilibrium valve by the size of oil mass in the control oilhole C of control break.General is all that these two kinds of modes of braking complement each other to exist simultaneously and ensure that the running of break is stable, improve break working life, braking reliability and eliminate in motor, let out caused slippage completely.But such mode of braking is outer power forces to make pivoted arm skidding, is difficult to eliminate the impact that inertia brings.Many operating modes must ensure to insulate in operating environment, some can reduce the hydraulic element of buffering not allow to use solenoid-operated proportional selector valve etc., and although some hydraulic element such as manual proportional reversing valve can be realized buffering, but there is misoperation, people is for the various destabilizing factors such as forgetting, so how to realize pure hydraulic pressure, can avoid the hydraulic buffer system of artificial destabilizing factor to become current Hydraulic Industry urgent problem.
Existing buffer system is to lag behind to reduce to impact by the time delay of braking, but cannot avoid braking the situation that easily produces abnormal sound under half-clutch state, and the stability of buffering is not high yet, and friction plate heating wearing and tearing are severe, greatly affects the life-span of break.
Summary of the invention
The deficiency existing for prior art, the object of the present invention is to provide a kind of hydraulic gyration buffer system that also can realize to Control in Hydraulic Rotation System stable buffering in the situation that using pure hydraulic cushion.
For achieving the above object, the invention provides following technological scheme:
A kind of hydraulic gyration buffer system, comprises buffer system main body, and described buffer system main body includes system inlet and outlet of fuel channel A1, B1, revolution inlet and outlet of fuel channel A2, B2, and the first one-way valve, the second one-way valve, the guiding valve of shuttle valve and tape speed control,
Shuttle valve includes two filler openings and an oil outlet, and wherein, two filler openings of shuttle valve are connected with system inlet and outlet of fuel channel A1, B1 respectively, and the oil outlet of shuttle valve is connected with fuel-displaced pipeline,
Guiding valve is the hydraulic control proportional reversing valve of 3-position 4-way, the path between the path between guiding valve able to turn on or off system inlet and outlet of fuel channel A1 and system inlet and outlet of fuel channel B1 or keying revolution inlet and outlet of fuel channel A2 and revolution inlet and outlet of fuel channel B2,
System inlet and outlet of fuel channel A1 is connected with the input end of the first one-way valve, and the output terminal of the first one-way valve is connected with input end, the revolution inlet and outlet of fuel channel A2 of guiding valve respectively,
System inlet and outlet of fuel channel B1 is connected with the input end of the second one-way valve, and the output terminal of the second one-way valve is connected with input end, the revolution inlet and outlet of fuel channel B2 of guiding valve respectively.
By adopting technique scheme, arranging of 3-position 4-way guiding valve and shuttle valve makes buffer system main body in the situation that not using solenoid-operated proportional selector valve, realize object stable, pure hydraulic cushion.
The present invention is further set to: described fuel-displaced pipeline is provided with the 3rd one-way valve and the one-way throttle valve being arranged in parallel, wherein, the oil outlet setting of the input end of the 3rd one-way valve, the equal corresponding shuttle valve of output terminal of one-way throttle valve, the output terminal of the 3rd one-way valve, the input end of one-way throttle valve are all back to the oil outlet setting of shuttle valve.
By adopting technique scheme, buffer system main body can rely on arranging of the 3rd one-way valve can make in the time of oil-feed and open soon, when oil in the control oilhole of break is got back in shuttle valve, due to the input end of the 3rd one-way valve, output terminal towards the oil arranging in the control oilhole that makes break can only from one-way throttle valve, flow out, one-way throttle valve makes slowly reducing of flow, revolution is slowly stopped, the process time that revolution stops is lengthened, gently, from having eliminated in essence inertia impact, and start time by one-way valve can make fluid soon from flowline flow out then motor is braked.
The present invention is further set to: the first damping that described guiding valve also includes the actuation time for extending guiding valve and the second damping.
By adopting technique scheme, the collocation of guiding valve and the first damping, the second damping can be eliminated the changes in flow rate that compression shock causes, and makes running more steady, can prevent that outer load from driving swivel gear to rotate and inhaling empty situation generation.
The present invention is further set to: between described revolution inlet and outlet of fuel channel A2 and B2, be also connected with two protection oil circuits, and be equipped with relief valve on two protection oil circuits, and two relief valves oppositely arrange.
By adopting technique scheme, two relief valves that oppositely arrange, prevent that respectively the overpressure of a direction from just can protect oil hydraulic motor in the time that oil hydraulic motor oil pressure transships.
Brief description of the drawings
Fig. 1 is hydraulic gyration buffer system embodiment's of the present invention schematic diagram.
Brief description of the drawings: 1, shuttle valve; 2, guiding valve; 3, the first damping; 4, the first one-way valve; 5, protection oil circuit; 6, relief valve; 7, the second one-way valve; 8, the second damping; 9, the 3rd one-way valve; 10, one-way throttle valve; 11, buffer system main body.
Embodiment
With reference to Fig. 1, hydraulic gyration buffer system embodiment of the present invention is described further.
A kind of hydraulic gyration buffer system, taking guiding valve 2 as main body, this guiding valve 2 is 3-position 4-way hydraulic control proportional reversing valve, the input end of this guiding valve 2 is connected with system oil inlet and outlet A1, B1, output terminal is connected with revolution oil inlet and outlet A2, the B2 of motor, between A1 and A2 and between B1 and B2, be connected respectively the first one-way valve 4 and the second one-way valve 7, make the oil-feed of system directly can enter oil hydraulic motor by one-way valve, oil return but can only be passed through from guiding valve 2.Two filler openings of shuttle valve 1 are connected with A1, B1, and oil outlet is connected with one-way throttle valve 10, and break control port is led in one-way throttle valve 10 outlets.Between A2, B2 oil circuit, be connected with two 5, two of oil circuits of protection protection oil circuits 5 and be equipped with relief valve 6, and two relief valves 6 oppositely arrange and can prevent respectively that the oil pressure of a direction is too high, carries out the effect of an overload protection to motor.
Below the function of each element in buffer system main body 11 is made a presentation:
Shuttle valve 1: it is made up of two one-way valves, no matter clockwise and anticlockwise can both be drawn the pressure oil of oil suction chamber toward break control port;
Guiding valve 2: it is the hydraulic control proportional reversing valve of a 3-position 4-way, meta cuts off all oil circuits, left position can allow A2, B2 communicate, right position can A1, B1 communicate, and flow changes with spool stroke, and oil circuit control is introduced by A1, B1, can advise that back pressure ensures the unlatching completely of break, can eliminate with the collocation of damping hole the changes in flow rate that compression shock causes, make running more steady, can prevent that outer load from driving swivel gear to rotate and inhaling empty situation;
The first damping 3, the second damping 8: extend the actuation time of guiding valve 2, reduce the compression shock on oil circuit control, make running more steady;
The first one-way valve 4, the second one-way valve 7: allow oil-feed not walk guiding valve 2, allow oil return walk guiding valve 2;
The 3rd one-way valve 9, one-way throttle valve 10: buffer system main body can rely on arranging of the 3rd one-way valve can make in the time of oil-feed and open soon, when oil in the control oilhole of break is got back in shuttle valve, due to the input end of the 3rd one-way valve, output terminal towards the oil arranging in the control oilhole that makes break can only from one-way throttle valve, flow out, one-way throttle valve makes slowly reducing of flow, revolution is slowly stopped, the process time that revolution stops is lengthened, gently, from having eliminated in essence inertia impact, and start time by one-way valve can make fluid soon from flowline flow out then motor is braked.
Working principle:
When startup (taking A1 oil-feed as example): 1. fluid arrives the piston of break by the one-way valve in shuttle valve 1 and one-way throttle valve 10, promote piston and open break; 2. fluid enters motor driving revolution by the first one-way valve 4, on oil circuit, there is the second one-way valve 7 to stop fluid directly to return system, oil return is obstructed, backpressure rising, induced pressure and back pressure promote guiding valve 2 toward moving right, fluid is by 2 times B1 hydraulic fluid ports of guiding valve, and the ratio that the travelling speed of controlling guiding valve 2 by the first damping 3 realizes flow changes, and plays cushioning effect.
When work: the guarantee of buffer system main body 11 by the spring force at guiding valve 2 two ends oil circuit reach the flow that could discharge oil return after certain input pressure, ensure that minimum input pressure is always higher than the cracking pressure of break.In the time that working pressure is not enough to open the enough drainback passage of guiding valve 2, the throttling meeting of guiding valve 2 inside forms certain back pressure and improves inlet pressure, reaches time difference between 2 actions of pressure surge and guiding valve eliminate not steady in operation process by the first damping 3 on guiding valve 2 oil circuit controls.
While stopping: 1. system inlet and outlet of fuel channel A1 and B1 fuel cut-off, the spring at guiding valve 2 two ends starts to reset, and controls time of reset by the first damping 3, and drainback passage, from large to small until close, plays buffer function.2. the fluid of brake inside, by one-way throttle valve 10 and 1 time system of shuttle valve, allows break close after motor stops by one-way throttle valve control fluid release time.
If, taking B1 as system in-line, buffer system main body is also carried out work as mentioned above while startup.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is also not only confined to above-described embodiment, and all technological schemes belonging under thinking of the present invention all belong to protection scope of the present invention.It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. a hydraulic gyration buffer system, comprises buffer system main body, it is characterized in that: described buffer system main body includes system inlet and outlet of fuel channel A1, B1, revolution inlet and outlet of fuel channel A2, B2, and the first one-way valve, the second one-way valve, shuttle valve and guiding valve, described in
Shuttle valve includes two filler openings and an oil outlet, and wherein, two filler openings of shuttle valve are connected with system inlet and outlet of fuel channel A1, B1 respectively, and the oil outlet of shuttle valve is connected with fuel-displaced pipeline, described in
Guiding valve is the hydraulic control proportional reversing valve of 3-position 4-way, the path between the path between described guiding valve able to turn on or off system inlet and outlet of fuel channel A1 and system inlet and outlet of fuel channel B1 or keying revolution inlet and outlet of fuel channel A2 and revolution inlet and outlet of fuel channel B2, described in
System inlet and outlet of fuel channel A1 is connected with the input end of the first one-way valve, and the output terminal of the first one-way valve is connected with input end, the revolution inlet and outlet of fuel channel A2 of guiding valve respectively, described in
System inlet and outlet of fuel channel B1 is connected with the input end of the second one-way valve, and the output terminal of the second one-way valve is connected with input end, the revolution inlet and outlet of fuel channel B2 of guiding valve respectively.
2. hydraulic gyration buffer system according to claim 1, it is characterized in that: described fuel-displaced pipeline is provided with the 3rd one-way valve and the one-way throttle valve being arranged in parallel, wherein, the oil outlet setting of the input end of the 3rd one-way valve, the equal corresponding shuttle valve of output terminal of one-way throttle valve, the output terminal of the 3rd one-way valve, the input end of one-way throttle valve are all back to the oil outlet setting of shuttle valve.
3. hydraulic gyration buffer system according to claim 1 and 2, is characterized in that: the first damping that described guiding valve also includes the actuation time for extending guiding valve and the second damping.
4. hydraulic gyration buffer system according to claim 1 and 2, is characterized in that: between described revolution inlet and outlet of fuel channel A2 and B2, be also connected with two protection oil circuits, and be equipped with relief valve on two protection oil circuits, and two relief valves oppositely arrange.
5. hydraulic gyration buffer system according to claim 4, is characterized in that: the first damping that described guiding valve also includes the actuation time for extending guiding valve and the second damping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410245849.5A CN104019084A (en) | 2014-06-04 | 2014-06-04 | Hydraulic rotation buffering system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410245849.5A CN104019084A (en) | 2014-06-04 | 2014-06-04 | Hydraulic rotation buffering system |
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| CN104019084A true CN104019084A (en) | 2014-09-03 |
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| CN201410245849.5A Pending CN104019084A (en) | 2014-06-04 | 2014-06-04 | Hydraulic rotation buffering system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106400875A (en) * | 2016-11-25 | 2017-02-15 | 江苏柳工机械有限公司 | Automatic bumping-preventing running system of loader |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57110856A (en) * | 1980-12-27 | 1982-07-09 | Hitachi Constr Mach Co Ltd | Controller of oil hydraulic device |
| JP2006329332A (en) * | 2005-05-26 | 2006-12-07 | Hitachi Constr Mach Co Ltd | Construction machine |
| CN201198850Y (en) * | 2008-05-16 | 2009-02-25 | 宁波中意液压马达有限公司 | Delaying and buffering brake mechanism of hydraulic reversing device |
| CN202732555U (en) * | 2012-09-12 | 2013-02-13 | 淮北市瑞鼎液压支柱有限责任公司 | Hydraumatic crawler crane motor oil supply and system cooling device |
-
2014
- 2014-06-04 CN CN201410245849.5A patent/CN104019084A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57110856A (en) * | 1980-12-27 | 1982-07-09 | Hitachi Constr Mach Co Ltd | Controller of oil hydraulic device |
| JP2006329332A (en) * | 2005-05-26 | 2006-12-07 | Hitachi Constr Mach Co Ltd | Construction machine |
| CN201198850Y (en) * | 2008-05-16 | 2009-02-25 | 宁波中意液压马达有限公司 | Delaying and buffering brake mechanism of hydraulic reversing device |
| CN202732555U (en) * | 2012-09-12 | 2013-02-13 | 淮北市瑞鼎液压支柱有限责任公司 | Hydraumatic crawler crane motor oil supply and system cooling device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106400875A (en) * | 2016-11-25 | 2017-02-15 | 江苏柳工机械有限公司 | Automatic bumping-preventing running system of loader |
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Application publication date: 20140903 |