CN102864799A - Bucket rod regeneration structure and excavator - Google Patents
Bucket rod regeneration structure and excavator Download PDFInfo
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- CN102864799A CN102864799A CN2012104038051A CN201210403805A CN102864799A CN 102864799 A CN102864799 A CN 102864799A CN 2012104038051 A CN2012104038051 A CN 2012104038051A CN 201210403805 A CN201210403805 A CN 201210403805A CN 102864799 A CN102864799 A CN 102864799A
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- chamber
- dipper
- buffer
- valve core
- bucket rod
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Abstract
The invention discloses a bucket rod regeneration structure and belongs to control structures of engineering machinery hydraulic systems. The bucket rod regeneration structure comprises a buffer device, wherein a second cavity is communicated with a hydraulic oil tank through a second confluence cavity under control of a bucket rod valve core and a bucket rod confluence valve core to form an oil return passage, and the buffer device forms pressure buffer between the second cavity and the hydraulic oil tank; the buffer device is connected with the bucket rod confluence valve core and achieves linkage through a linkage device, and the linkage device controls buffer force of the buffer device according to the hydraulic pressure of a first confluence cavity; and a connection passage is arranged between the first cavity and the second cavity and is provided with an on-off and flow control part controlled by the buffer force of the buffer device. The bucket rod regeneration structure has the advantages that the inner portion of a bucket rod main valve core controls regeneration, so that no independent valve core and installation space are required, and the bucket rod regeneration structure is simple and compact in structure; fine adjustment can be performed according to magnitude of loading so as to improve the excavating speed of a bucket rod; and excavating is improved when regeneration stops in large load.
Description
Technical field
The present invention relates to a kind of control structure of construction machinery hydraulic system, relate in particular to a kind of dipper revived structure and excavator.
Background technology
When excavator excavates action, the oil return of bucket arm cylinder rodless cavity oil-feed rod chamber, owing to the gravity reason of self, the rod chamber oil return is rapid, force the oil inlet quantity of rodless cavity less than the rod chamber recirculating oil quantity, easily produce cavitation, cavitation has shortened the life-span of oil cylinder and related elements, although the dipper regeneration techniques that occurs has subsequently improved the problems referred to above by the regeneration spool, but but can't automatically adjust the regenerant flow size according to load, and the valve body installing space that extra regeneration spool need to be larger is set.
Summary of the invention
The problems referred to above for existing excavator exists now provide a kind of dipper revived structure and excavator that is intended to realize automatically adjusting according to load regenerant flow size and compact conformation.
Concrete technical scheme is as follows:
A kind of dipper revived structure, comprise dipper converging valve core and dipper spool, wherein, described dipper spool connects also the first chamber and the first hydraulic pump of excavator and the break-make between the hydraulic oil container of the rodless cavity of control connection bucket arm cylinder, and break-make and Access flow between the second chamber of the rod chamber of connection bucket rod oil cylinder and described the first hydraulic pump;
Described dipper converging valve core connects and the first interflow chamber of described the first chamber of control connection and the second break-make and the Access flow that collaborates between chamber and the second hydraulic pump and the described hydraulic oil container that connects described the second chamber;
Also comprise buffer, when described dipper spool and the lower UNICOM of described dipper converging valve core control formed way to cycle oil, described buffer mineralization pressure between described the second chamber and described hydraulic oil container cushioned described the second chamber by described the second interflow chamber and described hydraulic oil container;
Described buffer is connected with described dipper converging valve core and realizes interlock by a linkage, and described linkage is controlled the cushion effect of described buffer according to the hydraulic pressure of described the first interflow chamber;
Between described the first chamber and described the second chamber interface channel is arranged, described interface channel is provided with break-make and the flow control component with the cushion effect control of described buffer.
Preferably, interface channel between described the first chamber and described the second chamber mainly is formed in the described dipper spool, described break-make and flow control component are mainly formed by the second one way valve on the section of the first one way valve on the section of being located at corresponding described the first chamber of described dipper spool and corresponding described the second chamber, and described the first one way valve and described the second one way valve are controlled described liquid flow path direction and entered described the first chamber by the interface channel of described the second chamber in described dipper spool from described the first one way valve.
Preferably, described buffer is mainly formed by the first buffer chamber and the second buffer chamber, described the first buffer chamber is connected with described the second interflow chamber by the first segment chute on the described dipper converging valve core, described the second buffer chamber is connected with described hydraulic oil container, is connected by the second section chute on the described dipper converging valve core between described the first buffer chamber and described the second buffer chamber.
Preferably, described linkage is mainly by on the section of being located on the described dipper converging valve core corresponding described the first interflow chamber and the reducing valve that is connected with described the first interflow chamber of import, be connected to promote piston that described dipper converging valve core moves with the outlet of described reducing valve and be connected the elastomeric element that resets for described dipper converging valve core with described dipper converging valve core, and described second section chute is promoted by described piston with described dipper converging valve core and the aperture increase.
Preferably, also comprise back pressure apparatus, described back pressure apparatus is mainly formed by described the first buffer chamber and described second section chute, the back pressure of the described back pressure apparatus that described second section chute produces.
Preferably, described dipper converging valve core and described dipper spool are located in the same valve body.
A kind of excavator wherein, comprises above-mentioned dipper revived structure.
The beneficial effect of technique scheme is:
1, dipper main valve plug internal control regeneration need not independent spool and installing space, and is simple and compact for structure.
2, in certain stroke, can automatically finely tune according to load, improve the dipper excavation speed.
3, during heavy load, increase fast dipper spool rod chamber oil return area, improve digging force when regeneration stops.
Description of drawings
Fig. 1 is the valve body cross-sectional view of the embodiment of a kind of dipper revived structure of the present invention.
The specific embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments, but not as limiting to the invention.
As shown in Figure 1, the embodiment of a kind of dipper revived structure of the present invention, comprise dipper converging valve core 1 and dipper spool 2, wherein, dipper spool 2 connects also the first chamber 21 and the first hydraulic pump 41 of excavator and break-make and the Access flow between the hydraulic oil container 5 of the rodless cavity 31 of control connection bucket arm cylinder 3, and the second chamber 22 of the rod chamber 32 of connection bucket rod oil cylinder 3 and break-make and the Access flow between the first hydraulic pump 41; Dipper converging valve core 1 connects and the first interflow chamber 11 of control connection the first chamber 21 and the second break-make and the Access flow that collaborates between chamber 12 and the second hydraulic pump 42 and the hydraulic oil container 5 that connects the second chamber 22; Also comprise buffer, when dipper spool 2 and the lower UNICOM of dipper converging valve core 1 control formed way to cycle oil, buffer is the mineralization pressure buffering between the second chamber 22 and hydraulic oil container 5 by the second interflow chamber 12 and hydraulic oil container 5 for the second chamber 22; Buffer is connected with dipper converging valve core 1 and realizes interlock by a linkage, and linkage is according to the cushion effect of the hydraulic pressure control buffer of the first interflow chamber 11; Between the first chamber 21 and the second chamber 22 interface channel 6 is arranged, interface channel 6 is provided with break-make and the flow control component with the cushion effect control of buffer.
The operating principle of technique scheme is, when dipper excavates, dipper spool 2 is connected being connected of the first chamber 21 and the first hydraulic pump 41 under the control of pilot pressure, dipper converging valve core 1 is connected being connected of first interflow chamber 11 and the second hydraulic pump 42 and is connected second and collaborate being connected of chamber 12 and hydraulic oil container 5 under the control of pilot pressure, the first hydraulic pump 41 and the 42 interflow work of the second hydraulic pump are rodless cavity 31 fuel feeding of bucket arm cylinder 3, the rod chamber 32 of bucket arm cylinder connects hydraulic oil container 5 by the second chamber 22 and the second interflow chamber 12 and forms way to cycle oil, because the buffering that buffer forms increases the second chamber 22 internal pressures, thereby the break-make of making and flow control component are progressively opened the interface channel 6 of UNICOM's the second chamber 22 and the first chamber 21, thereby form the regeneration path of the rodless cavity 31 of bucket arm cylinder 3.When the first interflow chamber 11 internal pressures increase when load increases, linkage drives the control buffer reduces the cushion effect of buffer, thereby make pressure in the second chamber 22 reduce to cause break-make and flow control component to close gradually interface channel 6 between the second chamber 22 and the first chamber 21, until the regeneration path blockade, regeneration stops.Thereby realize according to the adjustment of load regenerant flow, and the effect that when heavy load, stops to regenerate.
On the technique scheme basis, further, interface channel 6 between the first chamber 21 and the second chamber 22 mainly is formed in the dipper spool 2, break-make and flow control component can mainly be formed by the second one way valve 24 on the section of the first one way valve 23 on the section of being located at dipper spool 2 corresponding the first chambers 21 and corresponding the second chamber 22, and the first one way valve 23 and the second one way valve 24 control liquid flow path directions enter the first chamber 21 by the interface channel 6 of the second chamber 22 in dipper spool 2 from the first one way valve 23.The interface channel 6 that connects the second chamber 22 and the first chamber 21 is arranged in the dipper spool 2 makes compact overall structure, reduced valve space.
On the technique scheme basis, further, buffer can mainly be formed by the first buffer chamber 13 and the second buffer chamber 14, the first buffer chamber 13 by the first segment chute on the dipper converging valve core 1 (be blocked can't with accompanying drawing in draw) with second the interflow chamber 12 be connected, the second buffer chamber 14 is connected with hydraulic oil container 5, is connected by the second section chute on the dipper converging valve core 1 (be blocked and can't draw in accompanying drawing) between the first buffer chamber 13 and the second buffer chamber 14.The cushion effect of buffer is mainly formed by the second groove, also comprises simultaneously back pressure apparatus, and back pressure apparatus can mainly be formed by the first buffer chamber 13 and second section chute, the back pressure of the back pressure apparatus that the second section chute produces.Linkage can be mainly by on the section of being located at corresponding the first interflow chamber 11 on the dipper converging valve core 1 and the reducing valve 15 that is connected with the first interflow chamber 11 of import, be connected to promote piston 16 that dipper converging valve core 1 moves with the outlet of reducing valve 15 and be connected the elastomeric element 17 that resets for dipper converging valve core 1 with dipper converging valve core 1, the second section chute is promoted by piston 16 with dipper converging valve core 1 and the aperture increase.When load hour, the first interflow chamber 11 internal pressures are not enough to promote the spring 151 of reducing valve 15, and reducing valve 15 is not worked, and the second section chute is kept less aperture, thereby keeps the pressure in the second chamber 22, and the regeneration path is opened; When load strengthens, the first interflow chamber 11 internal pressures promote the spring 151 of pressure valve 15, reducing valve 15 is started working, thereby pushing piston 16, dipper converging valve core 1 is moved, cause second section chute aperture to strengthen, the second chamber 22 internal pressures are reduced, thereby the regeneration path is progressively closed until regenerate and stop, the digging force when keeping heavy load.When load diminished once again, elastomeric element 17 promoted dipper spool 1 and progressively resets, thereby the flow that progressively recovers the regeneration path recovers regeneration.
On the technique scheme basis, further, dipper converging valve core 1 and dipper spool 2 are located in the same valve body 7.Dipper converging valve core 1 and dipper spool 2 are located in the same valve body 7 and are made overall structure simple, reduce the use of connecting tube, occupy little space.
Also comprise a kind of excavator in the embodiments of the invention, wherein, comprise above-mentioned dipper revived structure.
The above only is preferred embodiment of the present invention; be not so restriction embodiments of the present invention and protection domain; to those skilled in the art; should recognize that being equal to that all utilizations manual of the present invention and diagramatic content done replace and the resulting scheme of apparent variation, all should be included in protection scope of the present invention.
Claims (7)
1. dipper revived structure, comprise dipper converging valve core and dipper spool, it is characterized in that, described dipper spool connects also the first chamber and the first hydraulic pump of excavator and the break-make between the hydraulic oil container of the rodless cavity of control connection bucket arm cylinder, and break-make and Access flow between the second chamber of the rod chamber of connection bucket rod oil cylinder and described the first hydraulic pump;
Described dipper converging valve core connects and the first interflow chamber of described the first chamber of control connection and the second break-make and the Access flow that collaborates between chamber and the second hydraulic pump and the described hydraulic oil container that connects described the second chamber;
Also comprise buffer, when described dipper spool and the lower UNICOM of described dipper converging valve core control formed way to cycle oil, described buffer mineralization pressure between described the second chamber and described hydraulic oil container cushioned described the second chamber by described the second interflow chamber and described hydraulic oil container;
Described buffer is connected with described dipper converging valve core and realizes interlock by a linkage, and described linkage is controlled the cushion effect of described buffer according to the hydraulic pressure of described the first interflow chamber;
Between described the first chamber and described the second chamber interface channel is arranged, described interface channel is provided with break-make and the flow control component with the cushion effect control of described buffer.
2. dipper revived structure as claimed in claim 1, it is characterized in that, interface channel between described the first chamber and described the second chamber mainly is formed in the described dipper spool, described break-make and flow control component are mainly formed by the second one way valve on the section of the first one way valve on the section of being located at corresponding described the first chamber of described dipper spool and corresponding described the second chamber, and described the first one way valve and described the second one way valve are controlled described liquid flow path direction and entered described the first chamber by the interface channel of described the second chamber in described dipper spool from described the first one way valve.
3. dipper revived structure as claimed in claim 1, it is characterized in that, described buffer is mainly formed by the first buffer chamber and the second buffer chamber, described the first buffer chamber is connected with described the second interflow chamber by the first segment chute on the described dipper converging valve core, described the second buffer chamber is connected with described hydraulic oil container, is connected by the second section chute on the described dipper converging valve core between described the first buffer chamber and described the second buffer chamber.
4. dipper revived structure as claimed in claim 3, it is characterized in that, described linkage is mainly by on the section of being located on the described dipper converging valve core corresponding described the first interflow chamber and the reducing valve that is connected with described the first interflow chamber of import, be connected to promote piston that described dipper converging valve core moves with the outlet of described reducing valve and be connected the elastomeric element that resets for described dipper converging valve core with described dipper converging valve core, and described second section chute is promoted by described piston with described dipper converging valve core and the aperture increase.
5. dipper revived structure as claimed in claim 3 is characterized in that also comprise back pressure apparatus, described back pressure apparatus is mainly formed by described the first buffer chamber and described second section chute, the back pressure of the described back pressure apparatus that described second section chute produces.
6. such as dipper revived structure as described in arbitrary among the claim 1-5, it is characterized in that described dipper converging valve core and described dipper spool are located in the same valve body.
7. an excavator is characterized in that, comprises such as dipper revived structure as described in arbitrary among the claim 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210403805.1A CN102864799B (en) | 2012-10-22 | 2012-10-22 | Bucket rod regeneration structure and excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210403805.1A CN102864799B (en) | 2012-10-22 | 2012-10-22 | Bucket rod regeneration structure and excavator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102864799A true CN102864799A (en) | 2013-01-09 |
| CN102864799B CN102864799B (en) | 2015-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210403805.1A Active CN102864799B (en) | 2012-10-22 | 2012-10-22 | Bucket rod regeneration structure and excavator |
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| Country | Link |
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| CN (1) | CN102864799B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697227A (en) * | 2013-12-07 | 2014-04-02 | 安徽博一流体传动股份有限公司 | Bucket rod valve debugging tool clamp |
| CN104805877A (en) * | 2015-03-30 | 2015-07-29 | 徐州徐工挖掘机械有限公司 | Flow control system for recycling bucket rod of super-tonnage backhoe excavator |
| CN106678103A (en) * | 2015-11-06 | 2017-05-17 | 中国航空工业第六八研究所 | Novel big-arm flow collecting valve |
| CN110552928A (en) * | 2019-09-24 | 2019-12-10 | 江苏徐工工程机械研究院有限公司 | Integrated valve and floating hydraulic system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1165930A (en) * | 1996-05-21 | 1997-11-26 | 三星重工业株式会社 | Heavy equipment control valve with variable feedback |
| JP2001304202A (en) * | 2000-04-21 | 2001-10-31 | Shin Caterpillar Mitsubishi Ltd | Fluid pressure circuit |
| JP2011085191A (en) * | 2009-10-15 | 2011-04-28 | Hitachi Constr Mach Co Ltd | Hydraulic drive device for hydraulic working machine |
| CN202090373U (en) * | 2011-05-04 | 2011-12-28 | 上海三一重机有限公司 | Changeable regeneration structure of hydraulic excavator dipper handle |
-
2012
- 2012-10-22 CN CN201210403805.1A patent/CN102864799B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1165930A (en) * | 1996-05-21 | 1997-11-26 | 三星重工业株式会社 | Heavy equipment control valve with variable feedback |
| JP2001304202A (en) * | 2000-04-21 | 2001-10-31 | Shin Caterpillar Mitsubishi Ltd | Fluid pressure circuit |
| JP2011085191A (en) * | 2009-10-15 | 2011-04-28 | Hitachi Constr Mach Co Ltd | Hydraulic drive device for hydraulic working machine |
| CN202090373U (en) * | 2011-05-04 | 2011-12-28 | 上海三一重机有限公司 | Changeable regeneration structure of hydraulic excavator dipper handle |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697227A (en) * | 2013-12-07 | 2014-04-02 | 安徽博一流体传动股份有限公司 | Bucket rod valve debugging tool clamp |
| CN104805877A (en) * | 2015-03-30 | 2015-07-29 | 徐州徐工挖掘机械有限公司 | Flow control system for recycling bucket rod of super-tonnage backhoe excavator |
| CN106678103A (en) * | 2015-11-06 | 2017-05-17 | 中国航空工业第六八研究所 | Novel big-arm flow collecting valve |
| CN110552928A (en) * | 2019-09-24 | 2019-12-10 | 江苏徐工工程机械研究院有限公司 | Integrated valve and floating hydraulic system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102864799B (en) | 2015-01-14 |
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Effective date of registration: 20160229 Address after: 215500 southeast Road, Changshu Southeast Economic Development Zone, Suzhou, Jiangsu, Changshou City Patentee after: Changshu Huawei Track Co.,Ltd. Address before: 215300 Ring East of Kunshan Development Zone, Suzhou City, Jiangsu Province Patentee before: Sany Heavy Machine Co., Ltd. |
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Effective date of registration: 20171128 Address after: 215500 southeast avenue of Changshu Southeast Economic Development Zone, Suzhou, Jiangsu Patentee after: Suote Transmission Equipment Co., Ltd. Address before: 215500 southeast Road, Changshu Southeast Economic Development Zone, Suzhou, Jiangsu, Changshou City Patentee before: Changshu Huawei Track Co.,Ltd. |