CN202627041U - Bucket arm cylinder regenerating unit and excavator - Google Patents
Bucket arm cylinder regenerating unit and excavator Download PDFInfo
- Publication number
- CN202627041U CN202627041U CN 201220248855 CN201220248855U CN202627041U CN 202627041 U CN202627041 U CN 202627041U CN 201220248855 CN201220248855 CN 201220248855 CN 201220248855 U CN201220248855 U CN 201220248855U CN 202627041 U CN202627041 U CN 202627041U
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- cavity
- bucket arm
- dipper
- valve
- main valve
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Abstract
The embodiment of the utility model discloses a bucket arm cylinder regenerating unit and an excavator, belonging to the technical field of generation of engineering machinery. The bucket arm cylinder regenerating unit comprises a first cavity, a second cavity, wherein the first cavity is connected with a small main valve bucket arm valve core cavity; the second cavity is connected with a big main valve bucket arm valve core cavity; and a one-way valve controllable in opening and closing is arranged outside the first cavity and the second cavity so as to form a one-way oil path in which hydraulic oil can only flow to the big main valve bucket arm valve core cavity from the small main valve bucket arm valve core cavity. The utility model has the advantages that (1) a bucket arm regenerating loop mechanism is simple in structure; and (2) a bucket arm regenerating mechanism is favorable for enhancing the digging force and the digging speed of a bucket arm and simultaneously favorable for effectively reducing oil return resistance and improving the digging efficiency of the bucket arm.
Description
Technical field
The utility model relates to engineering machinery regenerating unit technical field, more especially, and the hydraulic crawler excavator that relates to a kind of bucket arm cylinder regenerating unit and said hydraulic crawler excavator bucket arm cylinder regenerating unit is installed.
Background technology
Hydraulic crawler excavator is a kind of common engineering machinery, has been widely used in every profession and trades such as building, water conservancy.Therefore performance, operability and the operating efficiency to excavator had higher requirement, and designing and developing energy-conservation, high efficiency hydraulic crawler excavator becomes a kind of pressing for.
From current construction machinery industry, each famous brand excavator manufacturers hydraulic crawler excavator generally adopts the integrated multipath valve, and spool is integrated in the valve body; Guide oil moves to promoting spool through upper and lower, realizes a series of continuous composite moves of excavator, wherein; In the dipper mining process; Dipper regenerative circuit hydraulic oil need pass through the oil return of valve inner oil duct, and is bigger along the stroke pressure loss, influenced oil flow and regenerability in the bucket arm cylinder.
To this defective; The valve external flux regeneration control valve that a kind of scalable regeneration runner is big or small, the fluid flowing velocity is very fast, bucket arm cylinder stretches out rapid speed and the fluid pipe losses is less has appearred; When having realized that dipper excavates; Regeneration runner adjustable size joint, the oil return resistance is little, the function that the dipper excavation speed is fast.
But the size of the regeneration runner of this technical scheme is regulated through a plurality of cartridge valve assemblies, and its structure is comparatively complicated.
The utility model content
A kind of bucket arm cylinder regenerating unit is provided at present, in order to solve too complicated problems of the regeneration channel design that is used to reduce the oil return resistance of the prior art, makes designs simplification, concrete technical scheme is following:
A kind of bucket arm cylinder regenerating unit wherein, has:
First cavity connects main valve dipper spool loculus;
Second cavity connects the big chamber of main valve dipper spool;
Said first cavity and the second cavity outer setting have the one way valve of controlled switching, form hydraulic oil flows to the big chamber of main valve dipper spool from main valve dipper spool loculus unidirectional oil circuit.
Preferably, wherein, said one way valve is arranged in one or two two three-way electromagnetic valve, and said 2/2-way electromagnetic valve connects the controller control switching that dipper unloads the pilot pressure sensor by one.
Preferably, wherein, said one way valve is by the pilot pressure control of dipper unloading.
The present technique scheme also provides a kind of hydraulic crawler excavator; Comprise motor, hydraulic system, equipment, running gear and electrical control system; Wherein, Also comprise above-mentioned bucket arm cylinder regenerating unit, first cavity connects the main valve dipper spool loculus of hydraulic crawler excavator, and second cavity connects the big chamber of main valve dipper spool of hydraulic crawler excavator.
The embodiment of the utility model is when excavating; Through the 2/2-way one way valve with dipper large and small chamber conducting; The loculus hydraulic oil gets into big chamber and realizes dipper regeneration; Dipper when unloading controller receives from the pressure signal of dipper unloading pilot pressure sensor and is converted into the signal of telecommunication, the switching of the 2/2-way electromagnetic valve of controlling one way valve integrated.
The advantage and the beneficial effect of technique scheme are embodied in:
1) through being set, first cavity and second cavity simplify dipper regenerative circuit mechanism structure;
2) through having the one way valve of controlled switching to form unidirectional oil circuit, cooperate controller and electromagnetic valve effect in addition, when strengthening dipper digging force and excavation speed, also effectively reduce the oil return resistance, improve the dipper digging efficiency in the cavity outer setting.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 shows the regenerating unit schematic diagram of the utility model embodiment; And
Fig. 2 shows according to an embodiment of the utility model, dipper regenerative circuit structural representation.
The specific embodiment
The utility model can be implemented with some forms under the situation that does not deviate from its spirit and substantive characteristics; Should be understood that; Above-mentioned example can't receive the restriction of aforementioned details, except as otherwise noted, should briefly understand its spirit and the defined scope of claim as adding; Therefore, all fall into the set of said claim and the variation and being equal to of distortion or similar set and scope of scope will be comprised by said accessory claim.
With reference to figure 1 and Fig. 2, the embodiment of the utility model provides a kind of hydraulic crawler excavator bucket arm cylinder regenerating unit, wherein, has:
First cavity 101 connects main valve dipper spool loculus 10;
Second cavity 102 connects the big chamber 20 of main valve dipper spool;
Said first cavity 101 and second cavity, 102 outer setting have the one way valve 201 of controlled switching, form the unidirectional oil circuit that hydraulic oil only can flow to the big chamber 20 of main valve dipper spool from main valve dipper spool loculus 10.
In a preference, said one way valve 201 is arranged in one or two two three-way electromagnetic valve 200, and said 2/2-way electromagnetic valve 200 connects the controller 301 control switchings that dipper unloads pilot pressure sensor 300 by one.
In a variant, said one way valve 201 is a hydraulic control one-way valve, is controlled by the pilot pressure that dipper excavates.
The embodiment of the utility model also discloses a kind of hydraulic crawler excavator with above-mentioned bucket arm cylinder regenerating unit; Comprise motor, hydraulic system, equipment, running gear and electrical control system; Wherein, First cavity 101 of above-mentioned bucket arm cylinder regenerating unit connects the big chamber 20 of main valve dipper spool of main valve dipper spool loculus 10, the second cavitys 102 connection hydraulic crawler excavators of hydraulic crawler excavator.
With reference to figure 2, when adopting the dipper regeneration sector among the utility model embodiment:
When dipper excavated to the vertical ground position, because big chamber 20 pressure are lower, loculus 10 pressure were higher; 2/2-way electromagnetic valve 200 electric currents are zero, and under the effect of electromagnetic valve spring force, the one way valve 201 that loculus 10 hydraulic oils will be integrated on the 2/2-way electromagnetic valve 200 is pushed open left; Bucket arm cylinder loculus 10 hydraulic oils enter into the big chamber 20 of bucket arm cylinder through loculus transition block 2, one way valve 201, the big chamber of bucket arm cylinder transition block 1; Thereby strengthen dipper digging force and excavation speed, realize the dipper regeneration function, simultaneously; The dipper reproduction speed is being controlled in dipper big chamber 20 loads, thereby the hydraulic shock of dipper when excavating is less;
In the dipper uninstall process; Pilot pressure sensor 300 on the dipper unloading guide oil circuit passes to controller 301 with detected pilot pressure; When leading force value in the ban and meeting or exceeding the valve core opening pressure 0.3～0.45Mpa in dipper when unloading, controller 301 is just given 2/2-way electromagnetic valve 200 signals of telecommunication, and the inner 2/2-way valve of electromagnetic valve moves up; Bucket arm cylinder loculus 10 and big chamber 20 are blocked; After preventing that dipper is unloaded to the end, loculus 10 hydraulic oils get into big chamber 20, have protected security of system.
More than the preferred embodiment of the utility model is described.It will be appreciated that the utility model is not limited to above-mentioned specific implementations, equipment of wherein not describing in detail to the greatest extent and structure are construed as with the common mode in this area to be implemented; Any those of ordinary skill in the art; Do not breaking away under the utility model technical scheme scope situation; All the method for above-mentioned announcement capable of using and technology contents are made many possible changes and modification to the utility model technical scheme; Or being revised as the equivalent embodiment of equivalent variations, this does not influence the flesh and blood of the utility model.Therefore, every content that does not break away from the utility model technical scheme, all still belongs in the scope of the utility model technical scheme protection any simple modification, equivalent variations and modification that above embodiment did according to the technical spirit of the utility model.
Claims (4)
1. hydraulic crawler excavator bucket arm cylinder regenerating unit is characterized in that having:
First cavity (101) connects main valve dipper spool loculus (10);
Second cavity (102) connects the main valve big chamber of dipper spool (20);
Said first cavity (101) and second cavity (102) outer setting have the one way valve of controlled switching, form hydraulic oil flows to the big chamber of main valve dipper spool (20) from main valve dipper spool loculus (10) unidirectional oil circuit.
2. bucket arm cylinder regenerating unit according to claim 1; It is characterized in that; Said one way valve (201) is arranged in one or two two three-way electromagnetic valve (200), and said 2/2-way electromagnetic valve (200) connects controller (301) the control switching that dipper unloads pilot pressure sensor (300) by one.
3. bucket arm cylinder regenerating unit according to claim 1 is characterized in that, said one way valve (201) is by the pilot pressure control of dipper unloading.
4. hydraulic crawler excavator; Comprise motor, hydraulic system, equipment, running gear and electrical control system; It is characterized in that; Also comprise any described bucket arm cylinder regenerating unit in the claim 1 to 3, first cavity connects the main valve dipper spool loculus of hydraulic crawler excavator, and second cavity connects the big chamber of main valve dipper spool of hydraulic crawler excavator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220248855 CN202627041U (en) | 2012-05-30 | 2012-05-30 | Bucket arm cylinder regenerating unit and excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220248855 CN202627041U (en) | 2012-05-30 | 2012-05-30 | Bucket arm cylinder regenerating unit and excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202627041U true CN202627041U (en) | 2012-12-26 |
Family
ID=47380252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220248855 Expired - Fee Related CN202627041U (en) | 2012-05-30 | 2012-05-30 | Bucket arm cylinder regenerating unit and excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202627041U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110397099A (en) * | 2019-06-28 | 2019-11-01 | 上海三一重机股份有限公司 | Oil return regenerating control device, method and excavator when a kind of dipper is withdrawn |
| CN110409527A (en) * | 2019-06-28 | 2019-11-05 | 三一重机有限公司 | A kind of movable arm potential energy recycling system and excavator |
-
2012
- 2012-05-30 CN CN 201220248855 patent/CN202627041U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110397099A (en) * | 2019-06-28 | 2019-11-01 | 上海三一重机股份有限公司 | Oil return regenerating control device, method and excavator when a kind of dipper is withdrawn |
| CN110409527A (en) * | 2019-06-28 | 2019-11-05 | 三一重机有限公司 | A kind of movable arm potential energy recycling system and excavator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20150530 |
|
| EXPY | Termination of patent right or utility model |