CN203581087U - Hydraulic steering gear with straight hole as signal hole - Google Patents
Hydraulic steering gear with straight hole as signal hole Download PDFInfo
- Publication number
- CN203581087U CN203581087U CN201320710881.7U CN201320710881U CN203581087U CN 203581087 U CN203581087 U CN 203581087U CN 201320710881 U CN201320710881 U CN 201320710881U CN 203581087 U CN203581087 U CN 203581087U
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- China
- Prior art keywords
- valve
- hole
- port
- steering gear
- hydraulic steering
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- Expired - Fee Related
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Abstract
The utility model relates to a hydraulic steering gear with a straight hole as a signal hole and belongs to the field of hydraulic technologies. The hydraulic steering gear is characterized in that a valve bush is nested in an inner hole of a valve block; a spool having a passage is fitted in the valve bush; one end of the valve block is provided with a cycloidal-pin wheel meshing pair; a link shaft is fitted in the spool; one end of the link shaft is linked with the valve bush through a pull pin so as to form a rotary valve distribution structure; the other end of the link shaft is linked with a rotor of the cycloidal-pin wheel meshing pair so as to form a cycloidal metering motor; a safety valve having a high-pressure cavity is fitted in the valve block; the valve block is provided with an oil inlet, a return oil port, a left oil port, a right oil port and a signal port, all on a same oil port plane; the signal port is arranged on a machining plane perpendicular to the oil port plane and is directly communicated with the high-pressure cavity of the safety valve through a straight hole. The hydraulic steering gear has the advantages that machining is very convenient and highly safe; the passage of the signal port is shortened through the straight-hole structure, and accordingly the signal port responds to signals faster and more flexibly.
Description
Technical field
The utility model relates to a kind of deflector, and the hydraulic steering gear that especially a kind of telltale hole is straight hole, belongs to hydraulic technique field.
Background technology
Hydraulic steering gear is a kind of steering hardware generally applying on construction machinery and equipment, field machine and other engineering trucks, mainly by being arranged on thrust plate in valve body, turn the parts such as stator pair, safety valve and form, on valve body, be shaped with oil inlet P, oil return inlet T, left oil port A, right oil port B, and signal port Ls.
In prior art, as depicted in figs. 1 and 2, in order to be connected with safety valve high-voltage chamber, runner hole is that counterbore adds inclined hole structure to the signal port Ls of deflector.Not only technology difficulty is high when processing inclined for this kind of structure, and poor stability, slightly crookedly will cause scrapping of whole valve body.
Summary of the invention
The purpose of this utility model is: the problem existing for above-mentioned prior art, pass through structural development, the hydraulic steering gear that the runner hole telltale hole easy to process that proposes a kind of signal port is straight hole, thereby guaranteeing, under the prerequisite of the original performance figure of deflector, to significantly improve work efficiency and crudy.
In order to reach above object, the hydraulic steering gear that telltale hole of the present utility model is straight hole comprises valve body, and the endoporus of described valve body is equipped with valve pocket, and the spool that is shaped with runner is installed in described valve pocket; Cycloidal pinion engaged pair is equipped with in one end of described valve body; In described spool, universal driving shaft is housed; One end of described universal driving shaft is connected with valve pocket by finger, forms rotary valve flow distributing structure; The other end of described universal driving shaft is connected with the rotor of cycloidal pinion engaged pair, forms cycloid measure motor; The safety valve with high pressure chest is installed in described valve body; On described valve body, be shaped with the oil inlet, return opening, left oil port, the right oil port that are positioned in same hydraulic fluid port plane, and signal port, its improvements are: described signal port is positioned on the finished surface perpendicular to described hydraulic fluid port plane, and are directly communicated with the high pressure chest of safety valve by straight hole.
Adopt after the utility model, process very convenient, safe; And signal reaction is quicker, sensitive.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is the signal port schematic diagram of existing deflector.
Fig. 2 is the K-K cutaway view of Fig. 1.
Fig. 3 is the structural representation of an embodiment of the utility model.
Fig. 4 is the birds-eye view of Fig. 3.
The specific embodiment
The telltale hole of the present embodiment be straight hole hydraulic steering gear as shown in Figure 3 and Figure 4, its basic structure is same as the prior art.The endoporus of valve body 1 is equipped with valve pocket 2, and the interior installation of valve pocket 2 is shaped with the spool 3 of runner.Cycloidal pinion engaged pair 4 is equipped with in one end of valve body 1.Universal driving shaft 5 is housed in spool 3, and one end of universal driving shaft 5 is connected with valve pocket 3 by finger 6, forms rotary valve flow distributing structure.The other end of universal driving shaft 5 is connected with the rotor of cycloidal pinion engaged pair 4, forms cycloid measure motor.The interior installation of valve body 1 has the safety valve 7 of high pressure chest.On valve body 1, be shaped with the oil inlet P, oil return inlet T, left oil port A, the right oil port B that are positioned in same hydraulic fluid port plane, and be positioned at perpendicular to the signal port LS on the finished surface of hydraulic fluid port plane, this signal hydraulic fluid port is directly communicated with the high pressure chest of safety valve 7 by straight hole 8.This straight hole consists of tapped bore 8-2 and the inner oilhole 8-3 at outside counterbore 8-1, middle part.
The hydraulic steering gear of the present embodiment, because the runner hole of signal port is the straight hole being communicated with safety valve high-voltage chamber, does not need to connect through inclined hole transition, therefore process very convenient, safe; And because straight hole structure shortens the runner of signal port, therefore make the signal reaction of signal port quicker, sensitive.
Claims (2)
1. the hydraulic steering gear that telltale hole is straight hole, comprises valve body, and the endoporus of described valve body is equipped with valve pocket, and the spool that is shaped with runner is installed in described valve pocket; Cycloidal pinion engaged pair is equipped with in one end of described valve body; In described spool, universal driving shaft is housed; One end of described universal driving shaft is connected with valve pocket by finger, forms rotary valve flow distributing structure; The other end of described universal driving shaft is connected with the rotor of cycloidal pinion engaged pair, forms cycloid measure motor; The safety valve with high pressure chest is installed in described valve body; On described valve body, be shaped with the oil inlet, return opening, left oil port, the right oil port that are positioned in same hydraulic fluid port plane, and signal port, it is characterized in that: described signal port is positioned on the finished surface perpendicular to described hydraulic fluid port plane, and be directly communicated with the high pressure chest of safety valve by straight hole.
2. the hydraulic steering gear that telltale hole according to claim 1 is straight hole, is characterized in that: described straight hole consists of tapped bore and the inner oilhole at outside counterbore, middle part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320710881.7U CN203581087U (en) | 2013-11-12 | 2013-11-12 | Hydraulic steering gear with straight hole as signal hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320710881.7U CN203581087U (en) | 2013-11-12 | 2013-11-12 | Hydraulic steering gear with straight hole as signal hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203581087U true CN203581087U (en) | 2014-05-07 |
Family
ID=50579046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320710881.7U Expired - Fee Related CN203581087U (en) | 2013-11-12 | 2013-11-12 | Hydraulic steering gear with straight hole as signal hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203581087U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105774900A (en) * | 2014-12-15 | 2016-07-20 | 镇江液压股份有限公司 | Full-hydraulic steering gear with O-shaped sealing integrated valve |
| CN109162974A (en) * | 2018-09-05 | 2019-01-08 | 芜湖中意液压科技股份有限责任公司 | A kind of hydraulic steering gear LS oil circuit is integrated with one-way throttle valve |
-
2013
- 2013-11-12 CN CN201320710881.7U patent/CN203581087U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105774900A (en) * | 2014-12-15 | 2016-07-20 | 镇江液压股份有限公司 | Full-hydraulic steering gear with O-shaped sealing integrated valve |
| CN109162974A (en) * | 2018-09-05 | 2019-01-08 | 芜湖中意液压科技股份有限责任公司 | A kind of hydraulic steering gear LS oil circuit is integrated with one-way throttle valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140507 Termination date: 20191112 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |