CN201461570U - Plug-in brake valve - Google Patents
Plug-in brake valve Download PDFInfo
- Publication number
- CN201461570U CN201461570U CN2009200738655U CN200920073865U CN201461570U CN 201461570 U CN201461570 U CN 201461570U CN 2009200738655 U CN2009200738655 U CN 2009200738655U CN 200920073865 U CN200920073865 U CN 200920073865U CN 201461570 U CN201461570 U CN 201461570U
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- CN
- China
- Prior art keywords
- valve
- shuttle valve
- hydraulic fluid
- fluid port
- plug
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a plug-in brake valve, which comprises a valve block and a shuttle valve, a decompression valve and two counterbalance valves plugged in the valve block, wherein the decompression valve is provided with a decompression oil port, a leakage oil port and a brake oil port, the shuttle valve oil outlet is communicated with the decompression oil port through a flow passage, and in addition, the shuttle valve oil outlet and the leakage oil port are communicated directly through a flow passage. The plug-in brake valve has the advantages that the hydraulic oil flush fluid rate thereof can meet the standard of flush hydraulic motor and can be adjusted according to different flush hydraulic motors, and the structure thereof is more optimized, which is convenient for the processing of the flow passage in the valve block and the assembly of the whole valve body.
Description
Technical field
The utility model relates to a kind of plug-in type brake valve, relates in particular to the plug-in type brake valve of a kind of use on oil hydraulic motor.
Background technique
The plug-in type brake valve can prevent open circuit because the oil hydraulic motor hypervelocity (promptly out of control) that the fuel feeding deficiency causes; Play the protection motor during motor overload; When the pipe breakage of working connection, can at once motor be braked.Runner complexity in the most valve piece of present plug-in type brake valve, the casting difficulty is big and be subjected to multiple effects limit such as flow, installation dimension, connection that can not convenient and suitable different model motor hydraulic fluid port fishplate bar.In order to overcome the problems referred to above, the applicant's model utility a kind of plug-in type brake valve, be documented in the patent application document of application number 200820157362.1, it is too high that this plug-in type brake valve not only can be used to limit oil pressure, also can when low fuel pressure, carry out repairing, prevent that emptying phenomenon from appearring in motor; When the pipe breakage of working connection, can be at once with the motor braking, and have peak rate of flow big, be easy to realize multiple installation dimension, the advantage that flow passage structure is simple, easy to process.Though this plug-in type brake valve has above-mentioned plurality of advantages, find during practical application that the hydraulic fluid flow rate that leaks the hydraulic fluid port outflow is very little, be difficult to satisfy the needs of flushing of hydraulic motor.This mainly be since original plug-in type brake valve on reduction valve and shuttle valve structure or have shortcoming, specifically as shown in Figure 1, original plug-in type brake valve comprises and is inserted into shuttle valve 200 and reduction valve 300 on the valve piece 100, wherein, shuttle valve 200 has shuttle valve oil outlet 201, reduction valve 300 has decompression hydraulic fluid port 301, is communicated with by runner 400 between decompression hydraulic fluid port 301 and the shuttle valve hydraulic fluid port 201.The leakage restriction 301 of reduction valve 300 by left end will leak the internal communication in hydraulic fluid port L and the reduction valve 300, therefore, cause flowing out through braking hydraulic fluid port Br from the hydraulic oil part of shuttle valve 200 in runner 400 enters reduction valve 300, some slit 305 and leak restriction 302 and flow out from leaking hydraulic fluid port L between spring seat 303 and relief pressure valve cartridge 304 is washed to lower the temperature to oil hydraulic motor oil hydraulic motor.In order to guarantee the decompression characteristic of reduction valve 300, slit 305 is very little between spring seat 303 and the relief pressure valve cartridge 304, like this from leaking just very little of hydraulic fluid flow rate that hydraulic fluid port L flows out, be difficult to satisfy the requirement of flushing of hydraulic motor, but in case slit between spring seat 303 and the relief pressure valve cartridge 304 305 become the decompression characteristic that will destroy reduction valve 300 greatly.
The model utility content
Technical problem to be solved in the utility model provides the plug-in type brake valve that a kind of hydraulic oil flushing flow rate can satisfy the requirement of flushing of hydraulic motor, to overcome the defective that prior art exists.
In order to solve the problems of the technologies described above, the utility model adopts following technological scheme:
A kind of plug-in type brake valve, comprise the valve piece and be inserted into shuttle valve, reduction valve and two valves that contend with on the valve piece, described shuttle valve has the shuttle valve oil outlet, reduction valve has the decompression hydraulic fluid port, leaks hydraulic fluid port and braking hydraulic fluid port, be communicated with by runner between shuttle valve oil outlet and the decompression hydraulic fluid port, it is characterized in that: also directly be communicated with between described shuttle valve oil outlet and the leakage hydraulic fluid port by a runner.
By will also directly being communicated with between shuttle valve oil outlet and the leakage hydraulic fluid port by a runner, the high pressure oil part of the shuttle valve oil outlet of shuttle valve outflow flows to reduction valve so, some leakage hydraulic fluid port that flows directly to dropping valve washes oil hydraulic motor, thereby makes the hydraulic fluid flow rate that leaks the hydraulic fluid port outflow can satisfy the requirement of flushing of hydraulic motor.
In order to adapt to the different oil hydraulic motor of flushing, the hydraulic fluid flow rate that leaks the hydraulic fluid port outflow can be regulated according to different oil hydraulic motors, be provided with the throttling screw plug in the runner between described valve oil outlet and the leakage hydraulic fluid port, described throttling screw plug has the throttle orifice with the required flushing flow rate coupling of oil hydraulic motor.Want to change flushing flow rate, only need to change the satisfactory throttling screw plug in throttle orifice aperture and get final product.
In order to adapt to the variation of said structure, make the runner processing convenience in the valve piece and make whole valve assembling easily, described shuttle valve forms the shuttle valve chamber by being inserted into the shuttle valve sleeve on the valve piece, left shuttle valve core, right shuttle valve core, ball chamber and the first shuttle valve filler opening and second filler opening, the described first shuttle valve filler opening is communicated with the left oil inleting port in ball chamber, described second filler opening is communicated with the right filler opening in ball chamber, ball has the oil outlet that is communicated with the shuttle valve chamber in the middle of the different chamber, also is provided with the ball that can roll back and forth in the ball chamber in the ball chamber; Described shuttle valve oil outlet be communicated with the shuttle valve chamber and with leak hydraulic fluid port on same vertical curve.
Adopt technique scheme, plug-in type brake valve of the present utility model has the advantage that the hydraulic oil flushing flow rate can satisfy the requirement of flushing of hydraulic motor, and flushing flow rate can be adjusted according to different oil hydraulic motors, has optimized, made things convenient for the processing of runner in the valve piece and the assembling of whole valve on the structure more.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is elaborated:
Fig. 1 is the structural representation of shuttle valve and reduction valve in the existing plug-in type brake valve;
Fig. 2 is the structural representation of shuttle valve and reduction valve in the plug-in type brake valve of the present utility model;
Embodiment
As shown in Figure 1, plug-in type brake valve of the present utility model comprises shuttle valve 200, reduction valve 300 and two the valve (not shown)s of contending with that are inserted on the valve piece 100.
Wherein, the structure of the reduction valve in the structure of dropping valve 300 and the existing plug-in type brake valve is identical, has the hydraulic fluid port of leakage L at left end, and the centre has decompression hydraulic fluid port 301, and right-hand member has braking hydraulic fluid port Br.
And shuttle valve 200 structures change to some extent, be inserted into the shuttle valve sleeve 202 on the valve piece 100, left shuttle valve core 203, right shuttle valve core 204 in left part formation shuttle valve chamber 205, the middle part forms ball chamber 206 and forms the first shuttle valve filler opening 207 in the ball chamber around 206, forms second filler opening 208 at right part.
The first shuttle valve filler opening 207 is communicated with the left oil inleting port 209 in ball chamber 206, second filler opening 208 is communicated with the right filler opening 210 in ball chamber 206, have the oil outlet 211 that is communicated with shuttle valve chamber 205 in the middle of the ball chamber 206, also be provided with the ball 700 that can in ball chamber 206, roll back and forth in the ball chamber 206.
Have shuttle valve oil outlet 201 in the position in shuttle valve chamber 205, the leakage hydraulic fluid port L of this shuttle valve oil outlet 201 and reduction valve 300 is on a vertical curve, and shuttle valve oil outlet 201 is communicated with the leakage hydraulic fluid port L and the decompression hydraulic fluid port 301 of reduction valve 300 by the runner of vertical runner 500 and inclination respectively.Be placed with throttling screw plug 600 in the runner 500.In use, can select the throttling screw plug 600 in corresponding throttle orifice 601 apertures according to different traffic requirements.
During work, if specifically according to the oil pressure of the first shuttle valve filler opening 207 and second filler opening 208. the first shuttle valve filler opening, 207 oil pressure height, the high-pressure and hydraulic oil that enters from the first shuttle valve filler opening 207 promotes ball 700 to ball chamber 206 right-hand members so, make the left oil inleting port 209 and oil outlet 211 connections in ball chamber 206 and block the low-pressure hydraulic oil that flows to from second filler opening 208, if the high-pressure and hydraulic oil that the first shuttle valve filler opening 207 is entered enters in the shuttle valve chamber 205 through ball chamber 206. the second shuttle valve filler opening, 208 oil pressure height, the high-pressure and hydraulic oil that enters from the second shuttle valve filler opening 208 promotes ball 700 to ball chamber 206 left ends so, make the right filler opening 209 and oil outlet 211 connections in the different chamber 206 of ball and block the low-pressure hydraulic oil that flows to from first filler opening 207, the high-pressure and hydraulic oil that the second shuttle valve filler opening 208 is entered enters in the shuttle valve chamber 205 through ball chamber 206.
And a high pressure oil part that flows out from shuttle valve oil outlet 201 in the shuttle valve chamber 205 flows into the reduction valve 300 through runner 400, and some directly washes oil hydraulic motor from the leakage hydraulic fluid port L outflow of reduction valve 300 through runner 500.Owing to thereby runner 500 can be opened greatly and can regulate the flow size as required by different throttling screw plugs 600 and realize that flushing flow rate can satisfy flushing of hydraulic motor needs.
It more than is exactly plug-in type brake valve of the present utility model, this plug-in type brake valve has the advantage that the hydraulic oil flushing flow rate can satisfy the requirement of flushing of hydraulic motor, and flushing flow rate can be adjusted according to different oil hydraulic motors, has optimized, made things convenient for the processing of runner in the valve piece and the assembling of whole valve on the structure more.
But, one skilled in the art would recognize that above-mentioned embodiment is exemplary, be to be the restriction that this patent is comprised scope in order better to make those skilled in the art can understand this patent, can not to be interpreted as; So long as according to spirit that this patent discloses done anyly be equal to change or modify, all fall into the scope that this patent comprises.
Claims (3)
1. plug-in type brake valve, comprise the valve piece and be inserted into shuttle valve, reduction valve and two valves that contend with on the valve piece, described shuttle valve has the shuttle valve oil outlet, reduction valve has the decompression hydraulic fluid port, leaks hydraulic fluid port and braking hydraulic fluid port, be communicated with by runner between shuttle valve oil outlet and the decompression hydraulic fluid port, it is characterized in that: also directly be communicated with between described shuttle valve oil outlet and the leakage hydraulic fluid port by a runner.
2. plug-in type brake valve according to claim 1 is characterized in that: be provided with the throttling screw plug in the runner between described shuttle valve oil outlet and the leakage hydraulic fluid port, described throttling screw plug has the throttle orifice with the required flushing flow rate coupling of oil hydraulic motor.
3. plug-in type brake valve according to claim 1 and 2, it is characterized in that: described shuttle valve forms the shuttle valve chamber by being inserted into the shuttle valve sleeve on the valve piece, left shuttle valve core, right shuttle valve core, ball chamber and the first shuttle valve filler opening and second filler opening, the described first shuttle valve filler opening is communicated with the left oil inleting port in ball chamber, described second filler opening is communicated with the right filler opening in ball chamber, have the oil outlet that is communicated with the shuttle valve chamber in the middle of the ball chamber, also be provided with the ball that can in the ball chamber, roll back and forth in the ball chamber; Described shuttle valve be communicated with the shuttle valve chamber and with leak hydraulic fluid port on same vertical curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200738655U CN201461570U (en) | 2009-05-05 | 2009-05-05 | Plug-in brake valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200738655U CN201461570U (en) | 2009-05-05 | 2009-05-05 | Plug-in brake valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201461570U true CN201461570U (en) | 2010-05-12 |
Family
ID=42388923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200738655U Expired - Lifetime CN201461570U (en) | 2009-05-05 | 2009-05-05 | Plug-in brake valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201461570U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936414B (en) * | 2009-05-05 | 2012-10-10 | 上海电气液压气动有限公司 | Balanced valve |
| CN108050121A (en) * | 2018-01-19 | 2018-05-18 | 邵立坤 | A kind of hydraulic control system of plug-in control valve and hoist brake |
-
2009
- 2009-05-05 CN CN2009200738655U patent/CN201461570U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936414B (en) * | 2009-05-05 | 2012-10-10 | 上海电气液压气动有限公司 | Balanced valve |
| CN108050121A (en) * | 2018-01-19 | 2018-05-18 | 邵立坤 | A kind of hydraulic control system of plug-in control valve and hoist brake |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100512 Effective date of abandoning: 20090505 |
|
| RGAV | Abandon patent right to avoid regrant |