CN106697045A - Multiple-damping-buffer noise-reduction type low-noise steering gear - Google Patents
Multiple-damping-buffer noise-reduction type low-noise steering gear Download PDFInfo
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- CN106697045A CN106697045A CN201510781114.9A CN201510781114A CN106697045A CN 106697045 A CN106697045 A CN 106697045A CN 201510781114 A CN201510781114 A CN 201510781114A CN 106697045 A CN106697045 A CN 106697045A
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- oil return
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- buffering
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Abstract
The invention relates to a multiple-damping-buffer noise-reduction type low-noise steering gear, and belongs to the technical field of hydraulic pressure. A circumferential oil tank, close to a partition disk, of a valve body of the steering gear corresponds to oil return holes distributed circumferentially in a valve sleeve at intervals. Oil return grooves extending axially are distributed in the portions, corresponding to the oil return holes, of a valve element at intervals. The bottom of each oil return groove is in an arch shape, and buffer grooves with the depth smaller than that of the oil return grooves extend to the two sides of the oil return grooves in the width direction. Buffer chamfers are arranged at the end, close to the partition disk, of the valve element, and an oil return gap is formed between the buffer chamfers and the partition disk. A buffer arc concave is formed between the valve element oil return grooves and the buffer chamfers. When the oil return holes of the valve sleeve are located at the portions, corresponding to the intervals between the adjacent oil return grooves, of a valve element outer circle, a oil return way from the circumferential oil tank of the valve body to the inside of the valve element is blocked. Due to the influence of a multiple-damping effect, variation of the flowing speed and pressure of hydraulic oil is made milder, and noise is effectively lowered.
Description
Technical field
It is especially a kind of to use multiple damping buffering noise reducing type low noise steering gear the present invention relates to a kind of low noise steering gear, belong to technical field of hydraulic pressure.
Background technology
Hydraulic steering gear（Typical structure referring to Application No. 201310712740.3,201410791052.5 Chinese patent application document）It is a kind of Hydraulic Elements for being widely used in engineering truck steering, has the advantages that safe and reliable, operation is flexibly light.By means of hydraulic steering gear, driver only need to be to be capable of achieving larger steering force to control with less steering force.
But noise is always insoluble problem greatly when in the prior art, hydraulic steering gear is operated.The Chinese patent literature of Patent No. ZL201420807712.X proposes a kind of low noise steering gear, there is valve body to enter oil ring groove and equipped with valve pocket and valve element for the steering gear, one end of valve pocket has valve pocket spill port, the stage casing of valve pocket has valve pocket distributor port, has valve pocket fuel feed hole between valve pocket spill port and valve pocket distributor port；Valve element one end has one group of corresponding with valve pocket oil return hole site valve element spill port of circumferentially-spaced distribution, and correspondingly valve pocket oil-feed hole site has distribution oil ring groove to valve element, and distribution oil ring groove is circumferentially-spaced to extend one group of connectivity slot corresponding with valve pocket distributor port position；One group at least in valve pocket spill port and valve element spill port is formed with axial extension and is circulated more than spill port the dashpot of length to should organize each at each spill port.The technical scheme of the patent can become gentle due to the closing or connection of spill port because of the gradually transition of intermediateness, therefore make the flow velocity of hydraulic oil and pressure change more soft, as a result effectively reduce noise.But the valve element oil-recovery tank of this steering gear is got through, though make the flow velocity of backflow and pressure change more soft by buffering tank liquor, but hydraulic oil is by valve body oil groove by after the spill port of the circumferentially-spaced distribution of valve element correspondence position, flowed back in the endoporus for directly entering valve element by valve element oil-recovery tank, its flow velocity and pressure change fail to reach the desired order of magnitude, thus fail to produce the effect of order of magnitude noise reduction.
The content of the invention
It is an object of the invention to：For the problem that above-mentioned prior art is present, improved by structure, propose a kind of multiple damping buffering noise reducing type low noise steering gear that can produce order of magnitude noise reduction.
In order to reach object above, multiple damping buffering noise reducing type low noise of the invention steering gear include sequentially fit together valve body, every disk, turn stator Meshing Pair and bonnet, the valve opening of the valve body is built with valve pocket and the indexable valve element being inserted into valve pocket, one end of the valve pocket is connected by bearing pin with the corresponding end of universal driving shaft, the other end of the universal driving shaft is driven with the internal spline for turning rotor in stator Meshing Pair by external spline teeth and engaged, and one end of the valve element is connected with input shaft；
The spill port of the neighbouring ring week oil groove correspondence circumferentially-spaced distribution of valve pocket every Pan Chu of the valve body, the axially extending oil-recovery tank of circumferentially-spaced distribution at the valve element correspondence spill port；The bottom of the oil-recovery tank is circular arc, and the dashpot that depth is shallower than oil-recovery tank is extended in width both sides；
The valve element is neighbouring to be formed with buffering chamfering every one end of disk, and is spaced with oil return is formed between disk；Buffering circular arc is formed between the valve element oil-recovery tank and buffering chamfering recessed；
Oil return circuit cut-off in the outer bowlder of valve element that the spill port of the valve pocket is in the correspondence adjacent oil-recovery tank interval, valve body ring week oil groove to the valve element；
When the spill port of the valve pocket is in the dashpot of the correspondence oil-recovery tank side, the valve body ring week oil groove is spaced by valve pocket spill port by valve element dashpot, oil-recovery tank, recessed buffering circular arc, buffering chamfering, oil return, is communicated to the oil return circuit in valve element.
In work, valve pocket and valve element are relatively rotated, and are gradually beaten and are opened or close oil return circuit.Because the oil-recovery tank both sides of valve element have dashpot, therefore during oil return, hydraulic oil first enters dashpot from valve pocket spill port, enters back into oil-recovery tank, plays the first heavy damping action；And oil-recovery tank is the circular arc bottom for not penetrating into valve element endoporus directly, compared with deep, two ends are shallower in its groove, and the hydraulic oil hence into oil-recovery tank can spring up to the shallower place in two ends and be stopped by valve sleeving inner wall, play the second heavy damping action；Pouring into the neighbouring hydraulic oil every disk one end of valve element will be recessed into buffering circular arc, and generation is similar to springing up in oil-recovery tank circular arc bottom, is similarly subjected to the stop of valve sleeving inner wall, plays triple damping actions；Then hydraulic oil flow path buffering chamfering, flow area becomes larger, final then be spaced by oil return and enter valve core inside, then oil return box, and buffers chamfering and go to oil return and be spaced and will again offset a part of hydraulic thrust, plays quadruple damping action.As a result, in the presence of quadruple damping, valve pocket opens and closes caused hydraulic pressure oil flow rate and pressure change compared with prior art with valve element oil circuit, occurs in that the reduction of the order of magnitude, thus more gentle, achieves the noise reduction of the order of magnitude.
Further, the bottom of the dashpot is the circular arc concentric with oil return trench bottom.
Further, recessed arc radius of the arc radius less than the oil return trench bottom of the buffering circular arc.
Further, recessed beam overall of the width more than oil-recovery tank both sides dashpot of the buffering circular arc.
Brief description of the drawings
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is the valve core structure schematic diagram of Fig. 1 embodiments.
Fig. 3 is the housing configuration schematic diagram of Fig. 1 embodiments.
Specific embodiment
The concrete structure of the multiple damping buffering noise reducing type low noise steering gear of the present embodiment as shown in figure 1, valve body 1, every disk 2, turn stator Meshing Pair 3 and bonnet 4 is sequentially fitted together, the valve opening of valve body 1 is built with valve pocket 5 and the indexable valve element 6 being inserted into valve pocket 5.One end of valve pocket 5 is connected by bearing pin 7 with the corresponding end of universal driving shaft 8, and the other end of universal driving shaft 8 is driven with the internal spline for turning rotor in stator Meshing Pair 3 by external spline teeth and engaged, and one end of valve element 6 is connected with input shaft 9.
Referring to Fig. 2, Fig. 3, the spill port 5-1 of the neighbouring ring week oil groove 1-1 correspondences circumferentially-spaced distribution of valve pocket 5 every Pan2Chu of valve body 1（Can be axially on demand multiple rows of）, the axially extending oil-recovery tank 6-1 of circumferentially-spaced distribution at the corresponding spill port 5-1 of valve element 6.The bottom of oil return 6-1 is the circular arc of radius R, and the dashpot 6-2 that depth is shallower than oil-recovery tank 6-1 is extended in width both sides, and the bottom of dashpot 6-2 is the circular arc concentric with oil-recovery tank 6-1 bottoms.Valve element 6 is neighbouring to be formed with buffering chamfering 6-4 every one end of disk 2, and is spaced 1-2 with oil return is formed between disk 2.Radius is formed between valve element oil-recovery tank 6-1 and buffering chamfering 6-4 for r（r<R）The recessed 6-3 of buffering circular arc, the overall width of the width of buffering circular arc recessed 6-3 more than oil-recovery tank 6-1 both sides dashpots 6-2.Other structures are essentially identical with prior art, do not repeat one by one.
When valve pocket is rotated against with valve element, when the spill port 5-1 of valve pocket 5 is in the cylindrical 6-5 of valve element of correspondence adjacent oil-recovery tank 6-1 intervals, the oil return circuit cut-off in the ring of valve body 1 week oil groove 1-1 to valve element 6 --- it is as shown in Figure 1.When the spill port 5-1 of valve pocket 5 goes to the dashpot 6-2 in correspondence oil-recovery tank 6-1 sides, start in the ring of valve body 1 week oil groove 1-1 to be spaced 1-1 by valve element dashpot 6-2, oil-recovery tank 6-1, the recessed 6-3 of buffering circular arc, buffering chamfering 6-4, oil return by valve pocket spill port 5-1, be communicated to the oil return circuit in valve element 6.
In a word, during valve pocket and valve element relatively rotate and gradually beat and open oil return circuit, hydraulic oil first enters oil-recovery tank from the buffered groove of valve pocket spill port, by the first weight damping buffering pressure；Oil-recovery tank does not penetrate into valve element endoporus directly, and its circular arc bottom makes hydraulic oil be sprung up to the shallower place in two ends to be stopped by valve sleeving inner wall, constitutes the second damping for restarting buffer deceleration effect；Valve element is poured into oil-recovery tank adjacent to after the hydraulic oil of disk one end is recessed into buffering circular arc, similar springing up towards end is produced, the stop of valve sleeving inner wall is similarly subjected to, triple damping actions are played；The hydraulic oil flow path buffering chamfering gushed out, become larger through flow area, then be spaced by oil return and enter valve core inside, the fuel tank backflow needed for completing, this process buffers chamfering goes to oil return interval and will again offset a part of hydraulic thrust, plays quadruple damping action.The closing process of oil return circuit can counter pushing away and know.
Experiment results proved, under the damping action that above-mentioned quadruple is mutually linked, valve pocket opens and closes caused hydraulic pressure oil flow rate with valve element oil circuit and pressure change occurs in that the reduction of the order of magnitude, thus noise reduction is very notable.
Claims (4)
1. a kind of multiple damping buffering noise reducing type low noise steering gear, including sequentially fit together valve body, every disk, turn stator Meshing Pair and bonnet, the valve opening of the valve body is built with valve pocket and the indexable valve element being inserted into valve pocket, one end of the valve pocket is connected by bearing pin with the corresponding end of universal driving shaft, the other end of the universal driving shaft is driven with the internal spline for turning rotor in stator Meshing Pair by external spline teeth and engaged, and one end of the valve element is connected with input shaft；It is characterized in that：
The spill port of the neighbouring ring week oil groove correspondence circumferentially-spaced distribution of valve pocket every Pan Chu of the valve body, the axially extending oil-recovery tank of circumferentially-spaced distribution at the valve element correspondence spill port；The bottom of the oil-recovery tank is circular arc, and the dashpot that depth is shallower than oil-recovery tank is extended in width both sides；
The valve element is neighbouring to be formed with buffering chamfering every one end of disk, and is spaced with oil return is formed between disk；Buffering circular arc is formed between the valve element oil-recovery tank and buffering chamfering recessed；
Oil return circuit cut-off in the outer bowlder of valve element that the spill port of the valve pocket is in the correspondence adjacent oil-recovery tank interval, valve body ring week oil groove to the valve element；
When the spill port of the valve pocket is in the dashpot of the correspondence oil-recovery tank side, the valve body ring week oil groove is spaced by valve pocket spill port by valve element dashpot, oil-recovery tank, recessed buffering circular arc, buffering chamfering, oil return, is communicated to the oil return circuit in valve element.
2. multiple damping buffering noise reducing type low noise steering gear according to claim 1, it is characterised in that：The bottom of the dashpot is the circular arc concentric with oil return trench bottom.
3. multiple damping buffering noise reducing type low noise steering gear according to claim 2, it is characterised in that：Recessed arc radius of the arc radius less than the oil return trench bottom of the buffering circular arc.
4. multiple damping buffering noise reducing type low noise steering gear according to claim 3, it is characterised in that：Recessed beam overall of the width more than oil-recovery tank both sides dashpot of the buffering circular arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510781114.9A CN106697045A (en) | 2015-11-16 | 2015-11-16 | Multiple-damping-buffer noise-reduction type low-noise steering gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510781114.9A CN106697045A (en) | 2015-11-16 | 2015-11-16 | Multiple-damping-buffer noise-reduction type low-noise steering gear |
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| CN106697045A true CN106697045A (en) | 2017-05-24 |
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| CN201510781114.9A Pending CN106697045A (en) | 2015-11-16 | 2015-11-16 | Multiple-damping-buffer noise-reduction type low-noise steering gear |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109109971A (en) * | 2018-09-05 | 2019-01-01 | 芜湖中意液压科技股份有限责任公司 | A kind of all-hydraulic steering gear |
| CN109131550A (en) * | 2018-09-05 | 2019-01-04 | 芜湖中意液压科技股份有限责任公司 | A kind of adjustable Flow amplification hydraulic steering gear of discharge capacity |
| CN111874096A (en) * | 2020-08-24 | 2020-11-03 | 荆州恒隆汽车零部件制造有限公司 | Auto steering ware case assembly with structure of making an uproar is fallen |
| CN111907590A (en) * | 2020-08-24 | 2020-11-10 | 荆州恒隆汽车零部件制造有限公司 | Automobile steering device input shaft with oil return back pressure increasing mechanism |
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| AU566104B2 (en) * | 1985-03-26 | 1987-10-08 | A.E. Bishop | Improved rotary valve |
| EP0446785A1 (en) * | 1990-03-15 | 1991-09-18 | Koyo Seiko Co., Ltd. | Hydraulic control valve |
| CN2487629Y (en) * | 2001-07-10 | 2002-04-24 | 济宁伊顿液压有限公司 | Small displacement cycloidal full-hydraulic steering device |
| CN200971109Y (en) * | 2006-08-08 | 2007-11-07 | 上海采埃孚转向机有限公司 | Valve core of arc groove steering gear |
| CN201677920U (en) * | 2010-04-08 | 2010-12-22 | 怀特(中国)驱动产品有限公司 | Combined large-displacement full hydraulic steering gear |
| CN104443019A (en) * | 2014-12-19 | 2015-03-25 | 镇江液压股份有限公司 | Low-noise hydraulic steering gear |
| CN205131358U (en) * | 2015-11-16 | 2016-04-06 | 镇江液压股份有限公司 | Steering gear of type of making an uproar low noise falls in multiple damping buffering |
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2015
- 2015-11-16 CN CN201510781114.9A patent/CN106697045A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU566104B2 (en) * | 1985-03-26 | 1987-10-08 | A.E. Bishop | Improved rotary valve |
| EP0446785A1 (en) * | 1990-03-15 | 1991-09-18 | Koyo Seiko Co., Ltd. | Hydraulic control valve |
| CN2487629Y (en) * | 2001-07-10 | 2002-04-24 | 济宁伊顿液压有限公司 | Small displacement cycloidal full-hydraulic steering device |
| CN200971109Y (en) * | 2006-08-08 | 2007-11-07 | 上海采埃孚转向机有限公司 | Valve core of arc groove steering gear |
| CN201677920U (en) * | 2010-04-08 | 2010-12-22 | 怀特(中国)驱动产品有限公司 | Combined large-displacement full hydraulic steering gear |
| CN104443019A (en) * | 2014-12-19 | 2015-03-25 | 镇江液压股份有限公司 | Low-noise hydraulic steering gear |
| CN205131358U (en) * | 2015-11-16 | 2016-04-06 | 镇江液压股份有限公司 | Steering gear of type of making an uproar low noise falls in multiple damping buffering |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109109971A (en) * | 2018-09-05 | 2019-01-01 | 芜湖中意液压科技股份有限责任公司 | A kind of all-hydraulic steering gear |
| CN109131550A (en) * | 2018-09-05 | 2019-01-04 | 芜湖中意液压科技股份有限责任公司 | A kind of adjustable Flow amplification hydraulic steering gear of discharge capacity |
| CN109109971B (en) * | 2018-09-05 | 2021-04-02 | 芜湖中意液压科技股份有限责任公司 | Full hydraulic steering gear |
| CN109131550B (en) * | 2018-09-05 | 2021-05-07 | 芜湖中意液压科技股份有限责任公司 | A Flow Amplifying Hydraulic Steering Gear with Adjustable Displacement |
| CN111874096A (en) * | 2020-08-24 | 2020-11-03 | 荆州恒隆汽车零部件制造有限公司 | Auto steering ware case assembly with structure of making an uproar is fallen |
| CN111907590A (en) * | 2020-08-24 | 2020-11-10 | 荆州恒隆汽车零部件制造有限公司 | Automobile steering device input shaft with oil return back pressure increasing mechanism |
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Application publication date: 20170524 |
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