CN208415357U - A kind of integrated valve group for loading shovel leveling - Google Patents
A kind of integrated valve group for loading shovel leveling Download PDFInfo
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- CN208415357U CN208415357U CN201821075747.3U CN201821075747U CN208415357U CN 208415357 U CN208415357 U CN 208415357U CN 201821075747 U CN201821075747 U CN 201821075747U CN 208415357 U CN208415357 U CN 208415357U
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- valve
- hydraulic fluid
- fluid port
- flow divider
- spool
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Abstract
The utility model discloses a kind of integrated valve groups for loading shovel leveling, the valve group is arranged between boom cylinder and bucket arm cylinder, including valve block, first check valve, second one-way valve, sequence valve and flow divider, first check valve, second one-way valve, sequence valve and flow divider are arranged in the valve block, and pass through oil circuit connection, wherein, the flow divider includes spool and valve pocket, the spool is arranged in valve pocket and can be mobile relative to valve pocket, the two sides of the spool are connected with spring respectively, the side of the spool is equipped with the damping hole of adjustable duct size, multiple flow valves are replaced with flow divider to adjust the flow of bucket arm cylinder, the oil liquid of bucket arm cylinder is set to remain constant, scraper bowl remains horizontality in uphill process.
Description
Technical field
The utility model relates to field of hydraulic control, and in particular to a kind of integrated valve group for loading shovel leveling.
Background technique
The leveling of loading shovel is mainly realized by controlling the distribution of oil liquid flow at present, and existing flow point
It is realized jointly with valve by multiple flow valves, makes valve group volume larger in this way, occupy larger installation space, higher cost, simultaneously
Load or the variation of oil liquid temperature when work, it is undesirable to will lead to control effect, needs to adjust flow valve repeatedly to meet leveling
It is required that.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of integrated valve groups for loading shovel leveling, use
Flow divider replaces multiple flow valves to adjust the oil mass of bucket arm cylinder, so that the oil liquid of bucket arm cylinder is remained constant, scraper bowl exists
Horizontality is remained in uphill process.
The technical solution that the utility model uses to solve above-mentioned technical problem are as follows: one kind is leveled for loading shovel
Integrated valve group, the valve group is arranged between boom cylinder and bucket arm cylinder, including valve block, the first check valve, second unidirectional
Valve, sequence valve and flow divider, first check valve, second one-way valve, sequence valve and flow divider are arranged in the valve block, and
Pass through oil circuit connection, wherein the flow divider includes spool and valve pocket, and the spool is arranged in valve pocket and can be relative to valve pocket
Mobile, the two sides of the spool are connected with spring respectively, and the side of the spool is equipped with the damping hole of adjustable duct size.
Preferably, hydraulic fluid port A, hydraulic fluid port C and the one end hydraulic fluid port B, the hydraulic fluid port B are arranged in the valve block to be connected with boom cylinder
Logical, the other end is connected with flow divider, and the first oil outlet E of the flow divider is connected with hydraulic fluid port A, and the second of the flow divider
Oil outlet F is connected by the first check valve with hydraulic fluid port C, and the hydraulic fluid port C is connected with bucket arm cylinder, the second one-way valve
One end is arranged between hydraulic fluid port B and flow divider, and the other end is arranged between flow divider and hydraulic fluid port A, time of the hydraulic fluid port A and swing arm
Fuel tank is connected.
Preferably, the valve block is equipped with hydraulic fluid port D, and the one end the hydraulic fluid port D is connected with bucket arm cylinder, and the other end passes through suitable
Sequence valve is connected with hydraulic fluid port A.
Preferably, safety valve is additionally provided in the valve block, the safety valve is arranged between flow divider and hydraulic fluid port A.
The utility model comparison prior art has following the utility model has the advantages that provided by the utility model for loading shovel
The integrated valve group of leveling, replaces multiple flow valves with flow divider, passes through the spool of flow divider, the adjustable port ruler being arranged on spool
The damping hole and spring of very little size adjust the oil mass of bucket arm cylinder, make valve group small volume, compact-sized, reduce production
Cost, while at work will not be by loading or the variation of oil liquid temperature is influenced, control effect is relatively stable.
Detailed description of the invention
Fig. 1 is the front view of the utility model；
Fig. 2 is the left view of the utility model；
Fig. 3 is the right view of the utility model；
Fig. 4 is the cross-sectional view of the utility model；
Fig. 5 is the principles of the present invention figure.
In figure:
12 first check valve of valve block, 3 sequence valve
4 safety valve, 5 flow divider, 6 spool
7 valve pocket, 8 spring, 9 damping hole
10 second one-way valves
Specific embodiment
The utility model will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the front view of the utility model, and Fig. 5 is the principles of the present invention figure.
Referring to Figure 1 and Fig. 5, the integrated valve group provided by the utility model for loading shovel leveling, the valve group
It is arranged between boom cylinder and bucket arm cylinder, including valve block 1, the first check valve 2, second one-way valve 10, sequence valve 3 and shunting
Valve 5, first check valve 2, second one-way valve 11, sequence valve 3 and flow divider 5 are arranged in the valve block 1, and pass through oil circuit
It connects, also sets up hydraulic fluid port A, hydraulic fluid port C and hydraulic fluid port B in the valve block 1, as shown in Figures 2 and 3, the one end the hydraulic fluid port B and swing arm oil
Cylinder is connected, and the other end is connected with flow divider 5, and the first oil outlet E of the flow divider 5 is connected with hydraulic fluid port A, the shunting
Second oil outlet F of valve 5 is connected by the first check valve 2 with hydraulic fluid port C, and the hydraulic fluid port C is connected with bucket arm cylinder, and described
One end of two check valves 10 is arranged between hydraulic fluid port B and flow divider 5, and the other end is arranged between flow divider 5 and hydraulic fluid port A, described
Hydraulic fluid port A is connected with the oil return box of swing arm.
Integrated valve group provided by the utility model for loading shovel leveling, the working principle of the valve group are as follows: swing arm
It rises when lifting, after the hydraulic oil of boom cylinder outflow enters flow divider 5 from the hydraulic fluid port B in valve block 1, divides two-way according to preset value
Fuel feeding, a part of oil liquid enter bucket arm cylinder by the first check valve 2, from hydraulic fluid port C, and another part oil liquid is direct by hydraulic fluid port A
Oil return is to oil return box, by the adjusting to flow divider 5, can control the flow into bucket arm cylinder, makes swing arm in lifting process
In, the corner of swing arm and the corner of scraper bowl are consistent, to achieve the purpose that level scraper bowl.
Integrated valve group provided by the utility model for loading shovel leveling, the flow divider 5 include spool 6 and valve
Set 7, the spool 6 are arranged in valve pocket 7 and can be mobile relative to valve pocket 7, and the two sides of the spool 6 are connected with spring 8 respectively
It connects, the side of the spool 6 is equipped with the damping hole 9 of adjustable duct size, as shown in figure 4, the working principle of flow divider 5 are as follows: when
Hydraulic oil enters in the valve pocket 7 in flow divider 5 from hydraulic fluid port B, is diverted to hydraulic fluid port A and hydraulic fluid port C by spool 6, when hydraulic fluid port C needs
When big flow, the aperture of damping hole 9 is reduced, increases hydraulic fluid port B back pressure, spool 6 is pushed to be displaced to the right, increases opening, makes hydraulic fluid port C
Flow increase, while under the action of spring 8, hydraulic fluid port C flow can be kept constant；Conversely, if C mouthfuls of flows need to reduce,
The aperture for increasing damping hole 9 reduces hydraulic fluid port B back pressure, and spool 6 is moved to the left, and reduces opening, and the flow of hydraulic fluid port C is reduced, simultaneously
Under the action of spring 8, keep hydraulic fluid port C flow constant, the hydraulic fluid flow rate for entering dipper oil pocket in this way is kept constant, thus
Level scraper bowl.
Integrated valve group provided by the utility model for loading shovel leveling, the valve block 1 are equipped with hydraulic fluid port D, institute
It states the one end hydraulic fluid port D to be connected with bucket arm cylinder, the other end is connected by sequence valve 3 with hydraulic fluid port A, and the oil liquid of bucket arm cylinder is passed through
3 oil return of sequence valve is additionally provided with safety valve 4 in the valve block 1 to the oil return box of swing arm, the setting of safety valve 4 flow divider 5 with
Between hydraulic fluid port A, if oil pressure is higher by the maximum pressure of system, which be may turn on, and hydraulic oil will be returned by hydraulic fluid port A
Flow to oil return box.
Although the utility model is disclosed as above with preferred embodiment, so it is not intended to limit the utility model, any
Those skilled in the art, without departing from the spirit and scope of the utility model, when can make a little modification and it is perfect, therefore this
The protection scope of utility model, which is worked as, to be subjected to the definition of the claims.
Claims (4)
1. a kind of integrated valve group for loading shovel leveling, the valve group are arranged between boom cylinder and bucket arm cylinder,
Including valve block (1), the first check valve (2), second one-way valve (10), sequence valve (3) and flow divider (5), first check valve
(2), second one-way valve (10), sequence valve (3) and flow divider (5) setting are in the valve block (1), and pass through oil circuit connection,
It is characterized in that, the flow divider (5) includes spool (6) and valve pocket (7), and spool (6) setting is interior in valve pocket (7) and can be opposite
Mobile in valve pocket (7), the two sides of the spool (6) are connected with spring (8) respectively, and the side of the spool (6) is equipped with adjustable
The damping hole (9) of duct size.
2. the integrated valve group according to claim 1 for loading shovel leveling, which is characterized in that the valve block (1)
Upper setting hydraulic fluid port A, hydraulic fluid port C and the one end hydraulic fluid port B, the hydraulic fluid port B are connected with boom cylinder, and the other end is connected with flow divider (5)
It connects, the first oil outlet E of the flow divider (5) is connected with hydraulic fluid port A, and the second oil outlet F of the flow divider (5) passes through first
Check valve (2) is connected with hydraulic fluid port C, and the hydraulic fluid port C is connected with bucket arm cylinder, one end setting of the second one-way valve (10)
Between hydraulic fluid port B and flow divider (5), the other end is arranged between flow divider (5) and hydraulic fluid port A, the oil return of the hydraulic fluid port A and swing arm
Case is connected.
3. the integrated valve group according to claim 1 for loading shovel leveling, which is characterized in that the valve block (1)
It is equipped with hydraulic fluid port D, the one end the hydraulic fluid port D is connected with bucket arm cylinder, and the other end is connected by sequence valve (3) with hydraulic fluid port A.
4. the integrated valve group according to claim 1-3 for loading shovel leveling, which is characterized in that described
It is additionally provided with safety valve (4) in valve block (1), the safety valve (4) is arranged between flow divider (5) and hydraulic fluid port A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821075747.3U CN208415357U (en) | 2018-07-09 | 2018-07-09 | A kind of integrated valve group for loading shovel leveling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821075747.3U CN208415357U (en) | 2018-07-09 | 2018-07-09 | A kind of integrated valve group for loading shovel leveling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208415357U true CN208415357U (en) | 2019-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821075747.3U Active CN208415357U (en) | 2018-07-09 | 2018-07-09 | A kind of integrated valve group for loading shovel leveling |
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| Country | Link |
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| CN (1) | CN208415357U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110984261A (en) * | 2019-11-21 | 2020-04-10 | 中联重科股份有限公司 | Method and device for controlling oil cylinder flow distribution of excavator and excavator |
-
2018
- 2018-07-09 CN CN201821075747.3U patent/CN208415357U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110984261A (en) * | 2019-11-21 | 2020-04-10 | 中联重科股份有限公司 | Method and device for controlling oil cylinder flow distribution of excavator and excavator |
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