CN106608280A - Full-hydraulic steering gear with low-noise safety valve - Google Patents
Full-hydraulic steering gear with low-noise safety valve Download PDFInfo
- Publication number
- CN106608280A CN106608280A CN201510699781.2A CN201510699781A CN106608280A CN 106608280 A CN106608280 A CN 106608280A CN 201510699781 A CN201510699781 A CN 201510699781A CN 106608280 A CN106608280 A CN 106608280A
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- valve
- steering gear
- hydraulic steering
- valve element
- passageway
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Abstract
The invention discloses a full-hydraulic steering gear with a low-noise safety valve. The full-hydraulic steering gear with the low-noise safety valve comprises a valve body. A valve element passageway and a valve seat passageway are arranged in the valve body. The valve element passageway communicates with an injection passageway. The valve seat passageway communicates with an outflow passageway. A valve element capable of moving in the transverse direction is arranged in the valve element passageway. A valve seat capable of moving in the transverse direction is arranged in the valve seat passageway. A reset spring is arranged between the valve element and the valve seat. A precise steel ball is arranged on the top of the valve element. The full-hydraulic steering gear with the low-noise safety valve has the following beneficial effects that the valve element is directly installed in the valve element passageway, no valve sleeve structures exist, additional sealing and limiting structures are not needed either, and therefore the number of required parts is greatly decreased, the structure is simple, reliability is good, and the full-hydraulic steering gear is particularly suitable for being used on electric industrial vehicles with high requirements for noise.
Description
Technical field
The present invention relates to a kind of turning facilities, more precisely, being a kind of all-hydraulic steering gear with low noise relief valve.
Background technology
All-hydraulic steering gear is a kind of common steering control apparatus, is widely used on agricultural machinery and industrial vehicle.It is for the maximum pressure being limited in when steering gear works, general inside or outside steering gear that relief valve is set.Existing safety valve structure is generally valve element housing configuration, i.e. valve element is arranged in valve pocket, valve pocket is arranged in valve body inner bore, need multiple auxiliary components to ensure valve pocket and the sealing of valve body and spacing, complex structure, poor reliability, valve element draw ratio are big, easily produce hydraulic pressure noise by big flow in relief valve.
The content of the invention
The present invention mainly solves the technical problem existing for prior art, so as to provide a kind of all-hydraulic steering gear with low noise relief valve.
What the above-mentioned technical problem of the present invention was mainly addressed by following technical proposals：
A kind of all-hydraulic steering gear with low noise relief valve，The described all-hydraulic steering gear with low noise relief valve includes a valve body，A valve core channel and a valve base channel are provided with described valve body，Described valve core channel is connected with an injection channel，Described valve base channel is connected with a flow pass，Valve element that can be laterally movable is provided with described valve core channel，Valve seat that can be laterally movable is provided with described valve base channel，A back-moving spring is provided between described valve element and described valve seat，An accurate steel balls are provided with the top of described valve element，Described accurate steel balls are arranged on the top of described valve core channel，Core body of the described valve element comprising a dumbbell shaped，The head of described core body is provided with a columned sealing cylinder，The side wall of described sealing cylinder is provided with a grading ring groove array being made up of the grading ring groove of annular，The afterbody of described core body is provided with the spring stop piece of an annular，Described spring stop piece is engaged with described back-moving spring，An equal pressure passageway for running through is provided with the middle part of described core body，Described valve seat includes a columned pedestal，The head of described pedestal is provided with a spring stigma，Described spring stigma is engaged with described back-moving spring，The afterbody of described pedestal is provided with the closure gasket groove of an annular，A dismountable O-ring seal is provided with described closure gasket groove.
Used as preferred embodiments of the present invention, the bottom of described equal pressure passageway is provided with a damping hole.
The all-hydraulic steering gear with low noise relief valve of the present invention has advantages below：As valve element is directly installed in valve core channel, without any housing configuration, without extra sealing and position limiting structure, number of components needed for greatly reducing, simple structure, good reliability, it is practical, it is particularly suitable for using on the electric industry vehicle higher to noise requirements.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, accompanying drawing to be used needed for embodiment or description of the prior art will be briefly described below, apparently, drawings in the following description are only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with according to these other accompanying drawings of accompanying drawings acquisition.
Fig. 1 is the dimensional structure diagram of the all-hydraulic steering gear with low noise relief valve of the present invention；
Dimensional structure diagrams of the Fig. 2 for the all-hydraulic steering gear with low noise relief valve in Fig. 1, is now another visual angle；
Fig. 3 be Fig. 2 in the all-hydraulic steering gear with low noise relief valve along line A-A sectional view；
Dimensional structure diagrams of the Fig. 4 for the valve body of the all-hydraulic steering gear with low noise relief valve in Fig. 2；
Fig. 5 be Fig. 4 in valve body along line B-B sectional view；
Further stereochemical structure decomposing schematic representations of the Fig. 6 for the all-hydraulic steering gear with low noise relief valve in Fig. 3；
Dimensional structure diagrams of the Fig. 7 for the valve seat of the all-hydraulic steering gear with low noise relief valve in Fig. 6；
Fig. 8 be Fig. 7 in valve seat along line C-C sectional view；
Dimensional structure diagrams of the Fig. 9 for the valve element of the all-hydraulic steering gear with low noise relief valve in Fig. 6；
Figure 10 be Fig. 9 in valve element along line D-D sectional view；
Wherein,
1st, the all-hydraulic steering gear with low noise relief valve；2nd, valve body；3rd, valve core channel；4th, valve base channel；5th, injection channel；6th, flow pass；7th, valve element；71st, core body；72nd, seal cylinder；721st, grading ring groove；73rd, spring stop piece；74th, equal pressure passageway；741st, damping hole；8th, back-moving spring；9th, valve seat；91st, pedestal；92nd, spring stigma；93rd, closure gasket groove；10th, O-ring seal；11st, accurate steel balls.
Specific embodiment
Below in conjunction with the accompanying drawings the preferred embodiments of the present invention are described in detail, so that advantages and features of the invention can be easier to be readily appreciated by one skilled in the art, apparent are clearly defined so as to make to protection scope of the present invention.
As shown in Figures 1 to 10，The all-hydraulic steering gear 1 with low noise relief valve includes a valve body 2，A valve core channel 3 and a valve base channel 4 are provided with the valve body 2，The valve core channel 3 is connected with an injection channel 5，The valve base channel 4 is connected with a flow pass 6，Valve element 7 that can be laterally movable is provided with the valve core channel 3，Valve seat 9 that can be laterally movable is provided with the valve base channel 4，A back-moving spring 8 is provided between the valve element 7 and the valve seat 9，The top of the valve element 7 is provided with an accurate steel balls 11，The accurate steel balls 11 are arranged on the top of the valve core channel 3，Core body 71 of the valve element 7 comprising a dumbbell shaped，The head of the core body 71 is provided with a columned sealing cylinder 72，The side wall of the sealing cylinder 72 is provided with a grading ring groove array being made up of the grading ring groove 721 of annular，The afterbody of the core body 71 is provided with the spring stop piece 73 of an annular，The spring stop piece 73 is engaged with the back-moving spring 8，The middle part of the core body 71 is provided with an equal pressure passageway 74 for running through，The valve seat 9 includes a columned pedestal 91，The head of the pedestal 91 is provided with a spring stigma 92，The spring stigma 92 is engaged with the back-moving spring 8，The afterbody of the pedestal 91 is provided with the closure gasket groove 93 of an annular，A dismountable O-ring seal 10 is provided with the closure gasket groove 93.
The bottom of the equal pressure passageway 74 is provided with a damping hole 741.
During use, as shown in Figure 3, when the pressure in valve body 2 exceeds preset security value, hydraulic oil is entered from injection channel 5 and extrudes valve element 7, valve element 7 is moved to the left, the gap that hydraulic oil is entered between valve element 7 and valve base channel 4, finally flows out from flow pass 6 so that the pressure in valve body 2 is released.When the reduced pressure in valve body 2 is to preset security value, in the presence of back-moving spring 8, valve element 7 moves right, the pathway closure between valve element 7 and valve base channel 4.
The accurate steel balls 11 are arranged on the top of the valve core channel 3, when valve core channel 3 is processed, directly utilize external force by accurate steel balls 11 to head into valve core channel 3, substantially increase the precision of the processing of valve core channel 3, improve the tightness of valve element 7 and valve core channel 3.
As valve element 7 is directly installed in valve core channel 3, without any housing configuration, without extra sealing and position limiting structure, number of components needed for greatly reducing, simple structure, good reliability, it is practical, it is particularly suitable for using on the electric industry vehicle higher to noise requirements.
This is not limited to, any change or replacement expected without creative work should all be included within the scope of the present invention.Therefore, the protection domain that protection scope of the present invention should be limited by claims is defined.
Claims (2)
1. a kind of all-hydraulic steering gear with low noise relief valve, it is characterised in that the described all-hydraulic steering gear with low noise relief valve（1）Comprising a valve body（2）, described valve body（2）A valve core channel is provided with inside（3）With a valve base channel（4）, described valve core channel（3）With an injection channel（5）Connect, described valve base channel（4）With a flow pass（6）Connect, described valve core channel（3）Valve element that can be laterally movable is provided with inside（7）, described valve base channel（4）Valve seat that can be laterally movable is provided with inside（9）, described valve element（7）With described valve seat（9）Between be provided with a back-moving spring（8）, described valve element（7）Top be provided with an accurate steel balls（11）, described accurate steel balls（11）It is arranged on described valve core channel（3）Top, described valve element（7）Core body comprising a dumbbell shaped（71）, described core body（71）Head be provided with a columned sealing cylinder（72）, described sealing cylinder（72）Side wall be provided with one by annular grading ring groove（721）The grading ring groove array of composition, described core body（71）Afterbody be provided with the spring stop piece of an annular（73）, described spring stop piece（73）With described back-moving spring（8）It is engaged, described core body（71）Middle part be provided with an equal pressure passageway for running through（74）, described valve seat（9）Comprising a columned pedestal（91）, described pedestal（91）Head be provided with a spring stigma（92）, described spring stigma（92）With described back-moving spring（8）It is engaged, described pedestal（91）Afterbody be provided with the closure gasket groove of an annular（93）, described closure gasket groove（93）A dismountable O-ring seal is provided with inside（10）.
2. the all-hydraulic steering gear with low noise relief valve according to claim 1, it is characterised in that described equal pressure passageway（74）Bottom be provided with a damping hole（741）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510699781.2A CN106608280A (en) | 2015-10-26 | 2015-10-26 | Full-hydraulic steering gear with low-noise safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510699781.2A CN106608280A (en) | 2015-10-26 | 2015-10-26 | Full-hydraulic steering gear with low-noise safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106608280A true CN106608280A (en) | 2017-05-03 |
Family
ID=58612273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510699781.2A Pending CN106608280A (en) | 2015-10-26 | 2015-10-26 | Full-hydraulic steering gear with low-noise safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106608280A (en) |
-
2015
- 2015-10-26 CN CN201510699781.2A patent/CN106608280A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170503 |
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| WD01 | Invention patent application deemed withdrawn after publication |