CN205779971U - A kind of pressure compensation spool effectively reducing Oil shocking - Google Patents
A kind of pressure compensation spool effectively reducing Oil shocking Download PDFInfo
- Publication number
- CN205779971U CN205779971U CN201620459637.1U CN201620459637U CN205779971U CN 205779971 U CN205779971 U CN 205779971U CN 201620459637 U CN201620459637 U CN 201620459637U CN 205779971 U CN205779971 U CN 205779971U
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- groove
- spool
- pressure compensation
- main body
- effectively reducing
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Abstract
The utility model discloses a kind of pressure compensation spool effectively reducing Oil shocking, including spool main body, the top of spool main body and bottom are respectively equipped with top bump and bottom protrusion, the circumference of spool main body is provided with annular groove, central channel it is provided with in the middle of top bump, the edge of spool body top is provided with limit groove, it is characterised in that the bottom of described limit groove is provided with triangular groove.This utility model simple in construction, service life are long, add a triangular groove, preferably solve the situation that Oil shocking is big, improve the stable operation performance of main control valve on the basis of original semicolumn groove.
Description
Technical field
This utility model relates to a kind of pressure compensation spool effectively reducing Oil shocking, belongs to Hydraulic Main control valve
Valve core structure technical field.
Background technology
Main control valve is widely used in the major loop hydraulic pressure control of the hydraulic control system of excavator and other engineering machinery
System processed, is built-in with the duty valves such as overflow valve, pressure-compensated valve, load holding check valve, it is achieved to work clothes
The precision-fit put, is the important component part of major loop hydraulic control system.In major loop hydraulic control system
In, main plunger pump provide main control valve working solution force feed, by controlling pilot-actuated valve, pilot control hydraulic pressure
Oil acts on corresponding main control valve and controls connection, drives main valve to control connection valve core movement, implements executive component phase
The action answered, thus meet the action request to executive component of operator.Pressure compensation spool is pressure compensation
One of ingredient that valve is important.As shown in Figure 1-Figure 3, pressure compensation spool in the market, including
Spool main body 1, the top of spool main body 1 and bottom are respectively equipped with top bump 5 and bottom protrusion 7, spool
The circumference of main body 1 is provided with annular groove 6, has central channel 4, spool in the middle of top bump 5 to spool main body 1
What the top of main body 1 was positioned at top bump 5 is provided around limit groove 3, and limit groove 3 is by semicolumn groove 3-1 and rectangle
Groove 3-2 forms, but is the absence of certain structure reducing Oil shocking, causes equalizing pressure surges big, causes
The unstable properties of main control valve.
Summary of the invention
The technical problems to be solved in the utility model is: provide a kind of simple in construction, length in service life effective
Reduce the pressure compensation spool of Oil shocking, solve the problem that pressure compensation spool equalizing pressure surges is big.
In order to solve above-mentioned technical problem, the technical solution of the utility model there is provided one and effectively reduces fluid
The pressure compensation spool of impact, including spool main body, top and the bottom of spool main body are respectively equipped with top bump
And bottom protrusion, the circumference of spool main body is provided with annular groove, is provided with central channel, spool main body in the middle of top bump
The edge at top is provided with limit groove, it is characterised in that the bottom of described limit groove is provided with triangular groove.
Preferably, the bottom of described central channel is positioned at spool main body.
Preferably, the edge of described spool body top is uniformly provided with six limit grooves, and the bottom of each limit groove is equal
It is provided with a triangular groove.
Preferably, described limit groove is made up of semicolumn groove and rectangular channel, and rectangular channel is positioned at the top of spool main body,
The top of semicolumn groove is connected with the bottom of rectangular channel.
Preferably, described triangular groove is located at the bottom of semicolumn groove.
Preferably, the bottom surface of described rectangular channel is parallel with valve core axis.
Preferably, half circular diameter of described semicolumn groove is identical with the width of rectangular channel, and semicolumn groove
Axis is vertical with valve core axis.
Preferably, the median plane of described triangular groove and the median plane coplanar of rectangular channel.
Preferably, the minimum point of described triangular groove is higher than the bottom surface of rectangular channel.
Preferably, described spool main body, top bump, bottom protrusion, central channel are concentric shafts.
This utility model simple in construction, service life are long, add one on the basis of original semicolumn groove
Triangular groove, preferably solves the situation that Oil shocking is big, improves the stable operation performance of main control valve.
Accompanying drawing explanation
Fig. 1 is the front view of conventional pressure compensating spool structure；
Fig. 2 is Fig. 1 left view；
Fig. 3 is Fig. 1 profile；
Fig. 4 is the axonometric chart of a kind of pressure compensation spool effectively reducing Oil shocking；
Fig. 5 is the front view of a kind of pressure compensation spool effectively reducing Oil shocking；
Fig. 6 is the left view of Fig. 5；
Fig. 7 is the profile of Fig. 5；
Fig. 8 is the operation principle schematic diagram of a kind of pressure compensation spool effectively reducing Oil shocking.
Detailed description of the invention
For making this utility model become apparent, hereby with preferred embodiment, and accompanying drawing is coordinated to be described in detail below.
This utility model is a kind of pressure compensation spool effectively reducing Oil shocking, as Figure 4-Figure 7, and its
Including spool main body 1, the top of spool main body 1 and bottom are respectively equipped with top bump 5 and bottom protrusion 7,
The circumference of spool main body 1 is provided with in the middle of annular groove 6, top bump 5 and is provided with central channel 4, the end of central channel 4
Portion is positioned at spool main body 1.Spool main body 1, top bump 5, bottom protrusion 7, central channel 4 are same
Mandrel.The edge at spool main body 1 top is uniformly provided with six limit grooves 3, and the bottom of each limit groove 3 is equipped with one
Individual triangular groove 2.
As it is shown in figure 5, limit groove 3 is made up of semicolumn groove 3-1 and rectangular channel 3-2, rectangular channel 3-2 is positioned at valve
The top of core main body 1, the top of semicolumn groove 3-1 is connected with the bottom of rectangular channel 3-2.Triangular groove 2 is located at
The bottom of semicolumn groove 3-1.
The bottom surface B of rectangular channel 3-2 is parallel with valve core axis.Half circular diameter of semicolumn groove 3-1 and rectangular channel 3-2
Width identical, and the axis of semicolumn groove 3-1 is vertical with valve core axis.The median plane of triangular groove 2 and square
The median plane coplanar of shape groove 3-2.As it is shown in fig. 7, the end that minimum point A of triangular groove 2 is higher than rectangular channel 3-2
Face B.
Principle of the present utility model is:
As shown in Figure 8, work surface 8 is close to triangular groove 2, i.e. work surface 8 and the cusp C on triangular groove 2
Contact is close to.When pressure compensation spool of the present utility model is constantly moved to the left, work surface 8 and triangular groove 2 shape
Becoming oil-through hole, owing to the area of triangular groove 2 is less, the area of this oil-through hole has reached the effect of buffering；Work as oil
When liquid passes through, pressure is buffered, so the big situation of Oil shocking is efficiently reduced.
Claims (10)
1. effectively reduce a pressure compensation spool for Oil shocking, including spool main body (1), spool main body (1)
Top and bottom be respectively equipped with top bump (5) and bottom protrusion (7), on the circumference of spool main body (1)
It is provided with in the middle of annular groove (6), top bump (5) and is provided with central channel (4), the edge at spool main body (1) top
It is provided with limit groove (3), it is characterised in that the bottom of described limit groove (3) is provided with triangular groove (2).
A kind of pressure compensation spool effectively reducing Oil shocking, it is characterised in that
The bottom of described central channel (4) is positioned at spool main body (1).
A kind of pressure compensation spool effectively reducing Oil shocking, it is characterised in that
The edge at described spool main body (1) top is uniformly provided with six limit grooves (3), the bottom on each limit groove (3)
It is equipped with a triangular groove (2).
4. a kind of pressure compensation spool effectively reducing Oil shocking as described in claim 1 or 3, its feature exists
In, described limit groove (3) is made up of semicolumn groove (3-1) and rectangular channel (3-2), rectangular channel (3-2)
Being positioned at the top of spool main body (1), the top of semicolumn groove (3-1) connects with the bottom of rectangular channel (3-2)
Connect.
A kind of pressure compensation spool effectively reducing Oil shocking, it is characterised in that
Described triangular groove (2) is located at the bottom of semicolumn groove (3-1).
A kind of pressure compensation spool effectively reducing Oil shocking, it is characterised in that
The bottom surface of described rectangular channel (3-2) is parallel with valve core axis.
A kind of pressure compensation spool effectively reducing Oil shocking, it is characterised in that
Half circular diameter of described semicolumn groove (3-1) is identical with the width of rectangular channel (3-2), and semicolumn groove
(3-1) axis is vertical with valve core axis.
A kind of pressure compensation spool effectively reducing Oil shocking, it is characterised in that
The median plane of described triangular groove (2) and the median plane coplanar of rectangular channel (3-2).
A kind of pressure compensation spool effectively reducing Oil shocking, it is characterised in that
The minimum point (A) of described triangular groove (2) is higher than the bottom surface (B) of rectangular channel (3-2).
A kind of pressure compensation spool effectively reducing Oil shocking, it is characterised in that
Described spool main body (1), top bump (5), bottom protrusion (7), central channel (4) are concentric shafts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620459637.1U CN205779971U (en) | 2016-05-19 | 2016-05-19 | A kind of pressure compensation spool effectively reducing Oil shocking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620459637.1U CN205779971U (en) | 2016-05-19 | 2016-05-19 | A kind of pressure compensation spool effectively reducing Oil shocking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205779971U true CN205779971U (en) | 2016-12-07 |
Family
ID=58116608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620459637.1U Expired - Fee Related CN205779971U (en) | 2016-05-19 | 2016-05-19 | A kind of pressure compensation spool effectively reducing Oil shocking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205779971U (en) |
-
2016
- 2016-05-19 CN CN201620459637.1U patent/CN205779971U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170527 Address after: 201612, No. 66, new embellish Road, Xinqiao Town, Shanghai, Songjiang District Patentee after: Lonking (Shanghai) Hydraulic Co.,Ltd. Address before: 201612 Shanghai City, Songjiang District new town Minyi Road No. 26 Patentee before: Long Gong (Shanghai) Precision Hydraulic Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20190519 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |