CN209412883U - A kind of excavator dipper core assembly with regeneration cutting function - Google Patents
A kind of excavator dipper core assembly with regeneration cutting function Download PDFInfo
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- CN209412883U CN209412883U CN201822074418.3U CN201822074418U CN209412883U CN 209412883 U CN209412883 U CN 209412883U CN 201822074418 U CN201822074418 U CN 201822074418U CN 209412883 U CN209412883 U CN 209412883U
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- dipper
- regeneration
- valve
- spool
- group
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Abstract
The utility model discloses a kind of excavator dipper core assemblies with regeneration cutting function, including dipper spool and valve body, wherein dipper spool is hollow structure, the dipper spool is equipped with several radial holes, the rod chamber and rodless cavity of the radial hole connection dipper, wherein the left side of dipper spool is equipped with dipper valve core check valve, controlling flow direction by dipper valve core check valve can only be from rod chamber to rodless cavity, compared with prior art, technical solution provided by the utility model is improved efficiency using regeneration function using big flow in the case where needing small digging force, realize energy conservation, in the case where needing big digging force, close regeneration function, reduce return oil pressure, increase digging force.
Description
Technical field
The present invention relates to excavator fields, and in particular to a kind of excavator dipper spool group with regeneration cutting function
Part.
Background technique
Currently, the regeneration of multi-way control valve dipper connection is realized by the opening of regeneration valve in excavator application field
Regeneration function, unlike the prior art, the design is to be realized by the closing of regeneration stop valve in raw cutting function,
While making full use of reclaimed oil, embody high-efficient, reaction is fast, the advantage of reliable in action.
Summary of the invention
The purpose of this utility model is to provide it is a kind of with regeneration cutting function excavator dipper core assembly,
Effect is to carry out regeneration to oil return, saves energy.
In order to solve the above-mentioned technical problem, a kind of excavator bucket with regeneration cutting function provided by the utility model
Stem valve core assembly, which is characterized in that packet includes dipper spool and valve body, and wherein dipper spool is hollow structure, the bucket rod valve
Core is equipped with several radial holes, and the radial hole connects the rod chamber and rodless cavity of dipper, wherein the left side of dipper spool
Equipped with dipper valve core check valve, controlling flow direction by dipper valve core check valve can only be from rod chamber to rodless cavity, rod chamber
Side is equipped with regeneration stop valve, opens when regenerating stop valve, then the straight-through fuel tank of rod chamber oil return, dipper spool closed check valve,
Cutting regeneration.
Further, the radial hole includes three groups, wherein one group is located at dipper spool rod chamber oil return open slot
For the first regeneration hole；One group is located at dipper spool rodless cavity oil inlet open slot for the second regeneration hole；One group is located at dipper spool
Rod chamber oil return side is communicated with oil back chamber as oil return hole.
Further, the regeneration stop valve includes regeneration stop valve valve pocket, regeneration cutting valve core and regeneration stop valve
Spring, wherein regeneration stop valve valve pocket is set between regeneration cutting spool and valve body, it is characterised in that there are three groups of holes on valve pocket, the
One group be with P mouthfuls be connected to open regeneration cutting spool throttle orifice, second group with dipper spool rod chamber oil return open slot at
It is connected, third group is connected with oil return, when spool opening, then connects with third group for second group.
The utility model has the beneficial effects that utilizing big flow using regeneration function in the case where needing small digging force
It improves efficiency, realizes energy conservation, in the case where needing big digging force, close regeneration function, reduce return oil pressure, increase and excavate
Power.
Detailed description of the invention
Fig. 1 is the structure chart that dipper core assembly is packed into valve body.
In figure, 1. 2. 3. 4. oil inlet oil circuit controls regeneration cutting oil circuit 5. bucket arm cylinder rodless cavity to regenerative circuit to oil return circuit
Oil circuit 6. P2 oil inlet oil circuit, 1, (note: dipper spool totally two, 1 spool of dipper has regeneration function, 2 spool of dipper to dipper spool
Do not have, it is herein 1 spool of dipper that two spools, which act substantially simultaneously), 2, dipper one-way valve spring, 3, dipper valve core check valve,
4, overload overflow valve, 5, main check valve, 6, bucket arm cylinder rodless cavity, 7, bucket arm cylinder rod chamber, 8, regeneration stop valve valve pocket, 9,
Regeneration cutting valve core, 10, regeneration cutting valve spring, 11, main valve plug outer spring, 12, main valve plug inner spring, 13, spacing collar,
14, the second regeneration hole, the 15, first regeneration hole, 16, oil return hole.
Specific embodiment
The utility model will be further described below with reference to the accompanying drawings.
As shown in Figure 1, a kind of excavator dipper core assembly with regeneration cutting function, which is characterized in that
Including dipper spool 1 and valve body, wherein dipper spool is hollow structure, and the dipper spool is equipped with several radial directions
Aperture, the rod chamber and rodless cavity of the radial hole connection dipper, wherein the left side of dipper spool is unidirectional equipped with dipper spool
Valve 3, controlling flow direction by dipper valve core check valve can only be from rod chamber to rodless cavity, and rod chamber side is equipped with regeneration cutting
Valve, when regeneration stop valve is opened, then fuel tank, dipper spool closed check valve, cutting regeneration are led directly in rod chamber oil return.
Further, the radial hole includes three groups, wherein one group is located at dipper spool rod chamber oil return open slot
For the first regeneration hole 15；One group is located at dipper spool rodless cavity oil inlet open slot for the second regeneration hole 14；One group is located at dipper
Spool rod chamber oil return side is communicated with oil back chamber as oil return hole 16.
Further, the regeneration stop valve includes regeneration stop valve valve pocket, regeneration cutting valve core and regeneration stop valve
Spring, wherein regeneration stop valve valve pocket is set between regeneration cutting spool and valve body, it is characterised in that there are three groups of holes on valve pocket, the
One group be with P mouthfuls be connected to open regeneration cutting spool throttle orifice, second group with dipper spool rod chamber oil return open slot at
It is connected, third group is connected with oil return, when spool opening, then connects with third group for second group.
The utility model has the beneficial effects that utilizing big flow using regeneration function in the case where needing small digging force
It improves efficiency, realizes energy conservation, in the case where needing big digging force, close regeneration function, reduce return oil pressure, increase and excavate
Power.
When needing dipper recycling to excavate, bucket arm cylinder rodless cavity pilot port XB is connected to pilot pressure, overcomes main valve
The spring force of in-core spring 12 and main valve plug outer spring 11, under the action of spacing collar 13, spool is switched to dipper and knocks off work
The hydraulic oil of position, bucket arm cylinder rod chamber 7 1. into bucket arm cylinder rod chamber oil return line passes through first by 2 spool of dipper
Regeneration hole 15 enters in the inner hole of dipper spool 1,3. the hydraulic oil into 1 inner hole of dipper spool is pressed along regenerative circuit
Retractor spool one-way valve spring 2 opens dipper valve core check valve 3, using the second regeneration hole 14 and bucket arm cylinder rodless cavity oil circuit
6. with oil inlet oil circuit 4. and P2 mouthfuls by 2 spool of dipper P2 oil inlet oil circuit 7. in hydraulic oil enter bucket arm cylinder together
Rodless cavity.With the landing of dipper, the gravitional force of dipper itself fades away, as the load of dipper increases, and then without bar
The pressure of chamber rises, and the pressure of oil inlet oil circuit 4. rises with it, and causes the pressure of the oil circuit of control regeneration stop valve 5. to rise, liquid
Pressure oil overcomes regeneration cutting spring 10 by regeneration cutting valve pocket restriction, pressure rise intracavitary into regeneration cut-out pressure
Spring force, so that 2. oil return circuit is opened, returns so that regeneration cutting valve core 9 moves right from bucket arm cylinder rod chamber
1. oil circuit is directly over regeneration hole I, 2. return to fuel tank by oil return circuit, and dipper check valve 3 is closed at this time, realizes for regeneration
The cutting of oil circuit, after removing pilot pressure, dipper spool is under the action of main valve plug outer spring 11 and main valve plug inner spring 12
It is restored to middle position state, dipper movement stops.
Claims (3)
1. a kind of excavator dipper core assembly with regeneration cutting function, which is characterized in that including dipper spool and valve
Body, wherein dipper spool is hollow structure, and the dipper spool is equipped with several radial holes, and the radial hole connects dipper
Rod chamber and rodless cavity, wherein the left side of dipper spool be equipped with dipper valve core check valve, controlled by dipper valve core check valve
Flow direction can only be from rod chamber to rodless cavity, and rod chamber side is equipped with regeneration stop valve, when regeneration stop valve opening, then has bar
Fuel tank, dipper spool closed check valve, cutting regeneration are led directly in chamber oil return.
2. a kind of excavator dipper core assembly with regeneration cutting function according to claim 1, feature exist
In the radial hole includes three groups, wherein one group is located at dipper spool rod chamber oil return open slot for the first regeneration hole；One
Group is located at dipper spool rodless cavity oil inlet open slot for the second regeneration hole；One group is located at dipper spool rod chamber oil return side and returns
Oil pocket communicates as oil return hole.
3. a kind of excavator dipper core assembly with regeneration cutting function according to claim 1, feature exist
In the regeneration stop valve includes regeneration stop valve valve pocket, regeneration cutting valve core and regeneration cutting valve spring, wherein regeneration is cut
Disconnected valve valve pocket is set between regeneration cutting spool and valve body, it is characterised in that has three groups of holes on valve pocket, first group is connected with P mouthfuls
To open regeneration cutting spool throttle orifice, second group be connected at dipper spool rod chamber oil return open slot, third group and
Oil return is connected, and when spool opening, then connects with third group for second group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822074418.3U CN209412883U (en) | 2018-12-11 | 2018-12-11 | A kind of excavator dipper core assembly with regeneration cutting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822074418.3U CN209412883U (en) | 2018-12-11 | 2018-12-11 | A kind of excavator dipper core assembly with regeneration cutting function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209412883U true CN209412883U (en) | 2019-09-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822074418.3U Active CN209412883U (en) | 2018-12-11 | 2018-12-11 | A kind of excavator dipper core assembly with regeneration cutting function |
Country Status (1)
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| CN (1) | CN209412883U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552920A (en) * | 2019-09-27 | 2019-12-10 | 潍柴动力股份有限公司 | Valve body structure, hydraulic system and walking machinery for reducing back pressure |
-
2018
- 2018-12-11 CN CN201822074418.3U patent/CN209412883U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552920A (en) * | 2019-09-27 | 2019-12-10 | 潍柴动力股份有限公司 | Valve body structure, hydraulic system and walking machinery for reducing back pressure |
| CN110552920B (en) * | 2019-09-27 | 2021-10-08 | 潍柴动力股份有限公司 | Valve body structure, hydraulic system and walking machinery for reducing back pressure |
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