CN205013760U - Excavator dipper regeneration valve - Google Patents
Excavator dipper regeneration valve Download PDFInfo
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- CN205013760U CN205013760U CN201520608398.7U CN201520608398U CN205013760U CN 205013760 U CN205013760 U CN 205013760U CN 201520608398 U CN201520608398 U CN 201520608398U CN 205013760 U CN205013760 U CN 205013760U
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- valve
- dipper
- plunger
- valve pocket
- spool
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Abstract
The utility model relates to an excavator dipper regeneration valve. It includes the valve barrel, a end screw thread connection of a plug screw and valve barrel, a valve head links to each other with the other end of valve barrel, be equipped with in the valve barrel one with the fixing base of plug screw looks butt, the one end of an elastic component links to each other with the fixing base, link to each other with the one end of valve barrel sliding connection's the case other end with the elastic component, the other end and the valve head looks butt of case, stretch into the plunger of the tip central authorities cartridge no. 1 of valve barrel part rather than sliding connection at the valve head, the part that lies in the valve barrel outside on the valve head is equipped with a radial hole, valve head tip and case looks butt are worn out to the one end of plunger, the other end of plunger extends in the radial hole, be equipped with an annular groove on the case circumference, be equipped with on the valve barrel with the 2nd radial hole of annular groove matched with and the 3rd radial hole. The utility model has the advantages of reasonable design, can adjust the oily regeneration volume of hydraulic pressure at the in -process of dipper adduction according to real -time excavator operating mode.
Description
Technical field
The utility model relates to a kind of excavator boom regeneration valve.
Background technique
Excavator is a kind of civil machinery of extensive use, realizes the operation such as movement, finishing to the work earthwork by equipment.The equipment of excavator generally comprises swing arm, dipper, scraper bowl and related accessories thereof, is driven respectively and realizes swing arm excavation and uninstall action, dipper excavates and uninstall action, scraper bowl excavate and uninstall action by boom cylinder, bucket arm cylinder and bucket cylinder.Excavator can complete ditching, entrucking, the work such as smooth by the composite move of swing arm, dipper and scraper bowl.
In the process of excavator work, the action of dipper almost runs through all construction actions.In order to improve speed and the efficiency of dipper adduction, on market, existing hydraulic shovel is almost all with " dipper regeneration " this function, namely in the process of dipper adduction, by the design to multi-way valve and hydraulic system, the hydraulic oil of bucket arm cylinder loculus is allowed to enter the large chamber of dipper, the speed of dipper adduction can be improved like this, the handling of excavator can be improved again.
But current regenerative system is all fixing regenerative system, this fixing regenerative system cannot meet operating mode changeable in excavator working procedure, sometimes even can play certain reaction to raising efficiency of excavator.Therefore, we need to improve existing dipper regenerative system, allow dipper regenerative system become variable, can regulate the regenerative system of dipper at any time according to excavator operating mode timely.
Model utility content
The utility model provides a kind of excavator boom regeneration valve, its reasonable in design, can according to real-time excavator operating mode, and in the process of dipper adduction, the amount of regeneration of regulator solution force feed, solves problems of the prior art.
The utility model for solving the problems of the technologies described above adopted technological scheme is: it comprises valve pocket, one plug screw is connected with the threaded one end of valve pocket, one valve head is connected with the other end of valve pocket, a fixed base abutted against with plug screw is provided with in valve pocket, one end of one elastic component is connected with fixed base, the one end of the spool be slidably connected with valve pocket is connected with the other end of elastic component, the other end and the valve head of spool abut against, the plunger that the end center plug-in mounting one stretching into housing portion at valve head is slidably connected with it, part valve head is positioned at outside valve pocket is provided with the first radial direction through hole, one end of plunger passes valve head end and spool abuts against, the other end of plunger extends in the first radial direction through hole, an annular groove is circumferentially provided with at spool, valve pocket is provided with the second radial direction through hole and the 3rd radial direction through hole that match with annular groove.
Described elastic component is spring.
Described spring is spiral compression spring.
Position corresponding with the annular groove of spool on valve pocket is provided with throttle orifice.
Described plug screw is connected by seal ring with valve pocket.
Described valve head is connected by seal ring with valve pocket.
The excircle of valve pocket is provided with seal ring.
The position that spool corresponds to plunger end is provided with a positioning groove adapted with plunger end.
The utility model adopts such scheme, has the following advantages:
1, existing " dipper regeneration " function, the oil return area of dipper is certain, and regeneration area is certain, the amount of regeneration of adjustment dipper hydraulic oil that cannot be real-time and the return oil pressure of dipper.The creationary amount of regeneration return oil pressure and dipper hydraulic oil of the utility model divide into two steps controls: in the process of dipper adduction, determined the back pressure of oil return by the oil return area of dipper regeneration valve spool, prevent the dipper large chamber of too fast dipper that declines from producing emptying phenomenon; The amount of regeneration of dipper is controlled by dipper regeneration valve.
2, owing to have employed dipper regeneration valve, the variable control of dipper amount of regeneration can be realized, and the auxiliary control of return oil pressure.By above control, the coupling that can reduce due to back pressure and amount of regeneration in dipper adduction process is improper, the energy dissipation caused, and the problem such as operability variation.
3, the position corresponding to plunger end on spool is provided with a positioning groove adapted with plunger end, and it is more tight, firm that this structural design can make plunger be connected with spool.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
The structural representation of multi-way valve when Fig. 2 is dipper adduction, scraper bowl does not contact to earth.
Fig. 3 is the structure for amplifying schematic diagram at A place in Fig. 2.
The structural representation of multi-way valve when Fig. 4 is dipper adduction, scraper bowl contacts to earth.
Fig. 5 is the structure for amplifying schematic diagram at B place in Fig. 4.
In figure, 1, valve pocket, 2, plug screw, 3, valve head, 4, fixed base, 5, spiral compression spring, 6, spool, 7, plunger, 8, first radial direction through hole, 9, annular groove, 10, second radial direction through hole, 11, 3rd radial direction through hole, 12, throttle orifice, 13, seal ring, 14, main valve plug, 15a, the large chamber of bucket arm cylinder, 15b, bucket arm cylinder loculus, 16, oil hydraulic pump, 17, hydraulic fluid tank, 18, inverted U-shaped feed path, 19, first path, 20, alternate path, 21, first breach, 22, port, 23, second breach, 24, third path, 25, 4th path, 26, five-way road, 27, 6th path, 28, 7th path, 29, 8th path, 30, positioning groove.
Embodiment
For clearly demonstrating the technical characterstic of this programme, below by embodiment, and in conjunction with its accompanying drawing, the utility model is elaborated.
As shown in Fig. 1 ~ Fig. 5, the utility model comprises valve pocket 1, and a plug screw 2 is connected with the threaded one end of valve pocket 1, and a valve head 3 is connected with the other end of valve pocket 1.The one end being provided with fixed base 4, elastic component that abuts against with plug screw 2 in valve pocket 1 is connected with fixed base 4, and the one end of spool 6 be slidably connected with valve pocket 1 is connected with the other end of elastic component, and the other end and the valve head 3 of spool 6 abut against.The plunger 7 that the end center plug-in mounting one stretching into valve pocket 1 part at valve head 3 is slidably connected with it, part valve head 3 is positioned at outside valve pocket 1 is provided with the first radial direction through hole 8, one end of plunger 7 passes valve head 3 end and spool 6 abuts against, and the other end of plunger 7 extends in the first radial direction through hole 8.The position that spool 6 corresponds to plunger 7 end is provided with a positioning groove 30 adapted with plunger 7 end, and the one end part of plunger 7 is in positioning groove 30.Circumferentially be provided with an annular groove 9 at spool 6, valve pocket 1 is provided with the second radial direction through hole 10 and the 3rd radial direction through hole 11 that match with annular groove 9.Elastic component is spring, and spring is spiral compression spring 5.Position corresponding with the annular groove 9 of spool 6 on valve pocket 1 is provided with throttle orifice 12.Plug screw 2 is connected by seal ring 13 with valve pocket 1, and valve head 3 is connected by seal ring 13 with valve pocket 1.The excircle of valve pocket 1 is provided with seal ring 13.
During use, the utility model is installed on excavator multi-way valve in the mode of cartridge valve, just can realizes the variable control to dipper amount of regeneration, improve working efficiency and the harmony of excavator.Namely, in common dipper regenerated liquid pressing system, add the dipper regeneration valve that can regulate oil return area, control the hydraulic oil amount of regeneration in dipper adduction process by dipper regeneration valve.The hydraulic oil of bucket arm cylinder loculus 15b, first by main valve plug 14, then dipper regeneration valve is arrived, part regeneration is to the large chamber 15a of bucket arm cylinder, another part passes through the oil return of dipper regeneration valve to hydraulic fluid tank 17, amount of regeneration and recirculating oil quantity are regulated by the oil return area of dipper regeneration valve, and the oil return area of dipper regeneration valve is determined by the pressure of the large chamber 15a of bucket arm cylinder simultaneously.By these logical relations, we just can accomplish, regulate the amount of regeneration of bucket arm cylinder loculus 15b at any time according to the pressure of the large chamber 15a of time receiving bucket arm cylinder in dipper, ensure that the coordination of excavator action is with efficient.
Oil hydraulic pump 16 is connected with inverted U-shaped feed path 18 by path, and alternate path 20, the 8th path 29 are connected with hydraulic fluid tank 17 respectively by path.The large chamber 15a of bucket arm cylinder is connected with the first path 19 by path, and bucket arm cylinder loculus 15b is connected with port 22 by path.First radial direction through hole 8 is connected by the large chamber 15a of path and bucket arm cylinder, and the end due to plunger 7 extends in the first radial direction through hole 8, and namely plunger 7 can the pressure of the large chamber 15a of perception bucket arm cylinder.
When dipper adduction, scraper bowl do not contact to earth, control gear control bound core 14 commutates (namely moving right), hydraulic oil in hydraulic fluid tank 17 enters inverted U-shaped feed path 18 by oil hydraulic pump 16 through path, and hydraulic oil enters the large chamber 15a of bucket arm cylinder by the first breach 21, first path 19.Meanwhile, bucket arm cylinder loculus 15b is by path entry port 22, because the pressure ratio of now bucket arm cylinder large chamber 15a is lower, therefore when the pressure of the large chamber 15a of bucket arm cylinder acts on plunger 7, the elastic force on the right side of dipper regeneration valve spool 6 cannot be overcome, dipper regeneration valve spool 6 is in the leftmost side, the pressure at the second radial direction through hole 10 place is high, the hydraulic oil of major part entry port 22 is by the second breach 23, third path 24, 6th path 27, 7th path 28, first path 19 enters the large chamber 15a of bucket arm cylinder and regenerates, the hydraulic oil of fraction entry port 22 is by the second breach 23, third path 24, 6th path 27, 4th path 25, five-way road 26, second radial direction through hole 10, annular groove 9, throttle orifice 12 gets back to hydraulic fluid tank 17.Because the opening area (oil return area) of dipper regeneration valve the 3rd radial direction through hole 11 is minimum, the pressure at the second radial direction through hole 10 place is high, and now dipper regeneration valve amount of regeneration is maximum.In this process, a part of hydraulic oil in the 15a of bucket arm cylinder large chamber is squeezed into from oil hydraulic pump 16 by path, another part hydraulic oil regenerates the large chamber 15a of bucket arm cylinder from bucket arm cylinder loculus 15b, because the flow entering the hydraulic oil of the large chamber 15a of bucket arm cylinder increases, therefore dipper adduction speed increases.
Along with the action of dipper adduction proceed, scraper bowl contacts to earth, main valve plug 14 invariant position, the pressure of the large chamber 15a of bucket arm cylinder rises gradually, the pressure acting on plunger 7 raises, when this pressure is enough to overcome the elastic force on the right side of dipper regeneration valve spool 6, dipper regeneration valve spool 6 moves right, and the second radial direction through hole 10 is connected with the 3rd radial direction through hole 11 by annular groove 9.Because the opening area (oil return area) of dipper regeneration valve the 3rd radial direction through hole 11 increases, the pressure at the second radial direction through hole 10 place reduces, and the hydraulic oil of most of entry port 22 gets back to hydraulic fluid tank 17 by the second breach 23, third path 24, the 6th path 27, the 4th path 25, five-way road 26, second radial direction through hole 10, annular groove 9, the 3rd radial direction through hole 11, the 8th path 29.In this process, dipper amount of regeneration reduces, and even stops regeneration.The large chamber of bucket arm cylinder is stressed=and face, bucket arm cylinder large chamber amasss ╳ prexxure of the hydraulic pump, and excavator digging force increases.
The utility model can meet dipper adduction initial time, need the situation that amount of regeneration is larger, along with the further adduction of dipper, its amount of regeneration and back pressure can be reduced again, improve dipper adduction speed.In the process that excavator excavates, because bucket arm cylinder large chamber 15a pressure is higher, dipper regeneration valve can open to maximum rating the opening area of the 3rd radial direction through hole 11 (oil return area), farthest reduce the back pressure in dipper adduction process, improve the efficiency of dipper adduction, avoid dipper back pressure situation that is excessive, that reduce digging force and occur.
Above-mentioned embodiment can not as the restriction to the utility model protection domain, and for those skilled in the art, any alternate modification make the utility model mode of execution or conversion all drop in protection domain of the present utility model.
The utility model does not describe part in detail, is the known technology of those skilled in the art of the present technique.
Claims (8)
1. an excavator boom regeneration valve, it is characterized in that: comprise valve pocket, one plug screw is connected with the threaded one end of valve pocket, one valve head is connected with the other end of valve pocket, a fixed base abutted against with plug screw is provided with in valve pocket, one end of one elastic component is connected with fixed base, the one end of the spool be slidably connected with valve pocket is connected with the other end of elastic component, the other end and the valve head of spool abut against, the plunger that the end center plug-in mounting one stretching into housing portion at valve head is slidably connected with it, part valve head is positioned at outside valve pocket is provided with the first radial direction through hole, one end of plunger passes valve head end and spool abuts against, the other end of plunger extends in the first radial direction through hole, an annular groove is circumferentially provided with at spool, valve pocket is provided with the second radial direction through hole and the 3rd radial direction through hole that match with annular groove.
2. a kind of excavator boom regeneration valve according to claim 1, is characterized in that: described elastic component is spring.
3. a kind of excavator boom regeneration valve according to claim 2, is characterized in that: described spring is spiral compression spring.
4. a kind of excavator boom regeneration valve according to claim 1, is characterized in that: position corresponding with the annular groove of spool on valve pocket is provided with throttle orifice.
5. a kind of excavator boom regeneration valve according to claim 1, is characterized in that: described plug screw is connected by seal ring with valve pocket.
6. a kind of excavator boom regeneration valve according to claim 1, is characterized in that: described valve head is connected by seal ring with valve pocket.
7. a kind of excavator boom regeneration valve according to claim 1, is characterized in that: on the excircle of valve pocket, be provided with seal ring.
8. a kind of excavator boom regeneration valve according to claim 1, is characterized in that: the position corresponding to plunger end on spool is provided with a positioning groove adapted with plunger end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520608398.7U CN205013760U (en) | 2015-08-13 | 2015-08-13 | Excavator dipper regeneration valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520608398.7U CN205013760U (en) | 2015-08-13 | 2015-08-13 | Excavator dipper regeneration valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205013760U true CN205013760U (en) | 2016-02-03 |
Family
ID=55212364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520608398.7U Active CN205013760U (en) | 2015-08-13 | 2015-08-13 | Excavator dipper regeneration valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN205013760U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065714A (en) * | 2015-08-13 | 2015-11-18 | 山东常林机械集团股份有限公司 | Regeneration valve of bucket rod of excavator |
-
2015
- 2015-08-13 CN CN201520608398.7U patent/CN205013760U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065714A (en) * | 2015-08-13 | 2015-11-18 | 山东常林机械集团股份有限公司 | Regeneration valve of bucket rod of excavator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20160722 Granted publication date: 20160203 |
|
| RINS | Preservation of patent right or utility model and its discharge | ||
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20200722 Granted publication date: 20160203 |
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| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20200722 Granted publication date: 20160203 |