CN103276762A - Structure for improving bucket rod suction and hydraulic excavator - Google Patents
Structure for improving bucket rod suction and hydraulic excavator Download PDFInfo
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- CN103276762A CN103276762A CN2013102058360A CN201310205836A CN103276762A CN 103276762 A CN103276762 A CN 103276762A CN 2013102058360 A CN2013102058360 A CN 2013102058360A CN 201310205836 A CN201310205836 A CN 201310205836A CN 103276762 A CN103276762 A CN 103276762A
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Abstract
The invention discloses a structure for improving bucket rod suction and a hydraulic excavator. The structure for improving bucket rod suction comprises a suction resistant oil way and a first one-way valve. The first one-way valve is arranged on the suction resistant oil way. A load-sensitive pump is used for offering suction resistant oil pressure to a working device. The suction resistant oil pressure enters the working device through the first one-way valve from the load-sensitive pump. The structure for improving bucket rod suction and the hydraulic excavator have the advantages that the suction phenomenon, caused by speed increase or composite operation conducted by the working device, of a hydraulic system of the hydraulic excavator is avoided; a pilot control device can work continuously without being influenced by the suction resistant oil pressure; the structure is simple and operation is simple and convenient.
Description
Technical field
The present invention relates to a kind of hydraulic system of hydraulic crawler excavator, relate in particular to a kind of dipper that improves and inhale empty structure and hydraulic crawler excavator.
Background technology
Hydraulic crawler excavator is a kind of based on hydraulic transmission technology, be applied to multi-functional mechanicals such as traffic engineering, mine engineering, civil engineering, but some attached problems have also been exposed when promoting along with the speed of hydraulic crawler excavator, and the emptying phenomenon that dipper or swing arm produce when descending is the key factor that influences the hydraulic crawler excavator operability, also is the hidden danger that hydraulic crawler excavator brings when speed promotes.And nowadays many employings are regenerated spools with raising speed and operability, to improve the emptying phenomenon of hydraulic crawler excavator; But under low-grade location, hydraulic crawler excavator still emptying phenomenon can occur when especially doing the dipper composite move.
Summary of the invention
In view of this, the present invention proposes a kind of dipper that improves and inhales empty structure and hydraulic crawler excavator, produces the problem of emptying phenomenon with the hydraulic system that solves hydraulic crawler excavator.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of dipper that improves is inhaled empty structure, is applied in the hydraulic system of excavator, and hydraulic system comprises load sensitive pump, load-sensitive valve, equipment and guide's control device; Load sensitive pump is provided for the control oil pressure of control load sensitive valve to guide's control device, load sensitive pump is provided for controlling the operating oil pressure of equipment to load-sensitive valve, guide's control device carries out control operation by the oil pressure responsive to load valve that receives, to carry out the difference action by load-sensitive valve control equipment; It is characterized in that, improve the empty structure of dipper suction and comprise anti-empty oil circuit and first one way valve inhaled;
First one way valve is arranged on anti-the suction on the empty oil circuit; Load sensitive pump is used for providing the anti-Null oil-pressure of inhaling to equipment, and the anti-Null oil-pressure of inhaling enters into equipment from load sensitive pump through first one way valve.
The above-mentioned dipper that improves is inhaled empty structure, wherein, also comprises reducing valve, and the oil pressure that reducing valve is used for the responsive to load pump and provides reduces pressure, and the anti-Null oil-pressure of inhaling enters into first one way valve after reducing valve reduces pressure.
The above-mentioned dipper that improves is inhaled empty structure, wherein, also comprises accumulator and second one way valve, and accumulator and second one way valve all are arranged on the oil circuit between load sensitive pump and the guide's control device; The control oil pressure enters into guide's control device with the order through reducing valve, second one way valve, accumulator; Accumulator is used for providing the control oil pressure to guide's control device.
The above-mentioned dipper that improves is inhaled empty structure, and wherein, equipment is oil cylinder.
The above-mentioned dipper that improves is inhaled empty structure, and wherein, guide's control device is hydraulic control lever.
In addition, a kind of hydraulic crawler excavator wherein, includes the above-mentioned dipper that improves and inhales empty structure.
The invention has the beneficial effects as follows:
1, load sensitive pump is inhaled empty oil circuit and is provided the anti-Null oil-pressure of inhaling to equipment by anti-, has avoided the hydraulic system of hydraulic crawler excavator because speed lifting or equipment carry out the emptying phenomenon that composition operation causes.
2, by utilizing accumulator to provide anti-when inhaling Null oil-pressure at load sensitive pump to equipment, continue to provide the control oil pressure to guide's control device, make guide's control device to work on.
3, simple in structure, easy and simple to handle.
Description of drawings
The accompanying drawing that constitutes a part of the present invention is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not constitute improper restriction of the present invention.In the accompanying drawings:
Fig. 1 improves the structural representation that dipper is inhaled empty structure embodiment for the present invention.
Description of reference numerals
1, load sensitive pump
2, load-sensitive valve
3, guide's control device
4, equipment
5, the empty oil circuit of anti-suction
6, first one way valve
7, accumulator
8, second one way valve
9, reducing valve
10, big chamber
11, loculus
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the present invention can make up mutually.
Basic thought of the present invention is: design a kind of dipper that improves and inhale empty structure, by the anti-empty oil circuit of inhaling is set, prevent that to play the effect of emptying phenomenon from appearring in hydraulic system in the hydraulic system of hydraulic crawler excavator.
Below in conjunction with accompanying drawing, each preferred embodiment of the present invention is described further:
A kind of dipper that improves is inhaled empty structure as shown in Figure 1, is applied in the hydraulic system of excavator, and hydraulic system comprises load sensitive pump 1, load-sensitive valve 2, equipment 4 and guide's control device 3; Load sensitive pump 1 is provided for the control oil pressure of control load sensitive valve 2 to guide's control device 3, load sensitive pump 1 is provided for controlling the operating oil pressure of equipment 4 to load-sensitive valve 2, guide's control device 3 carries out control operation by the oil pressure responsive to load valve 2 that receives, to carry out the difference action by load-sensitive valve 2 control equipments 4; It is characterized in that, improve the empty structure of dipper suction and comprise anti-empty oil circuit 5 and first one way valve 6 inhaled;
First one way valve 6 is arranged on anti-the suction on the empty oil circuit 5; Load sensitive pump 1 is used for providing the anti-Null oil-pressure of inhaling to equipment 4, and the anti-Null oil-pressure of inhaling enters into equipment 4 from load sensitive pump 1 through first one way valve 6.
The operating principle of technique scheme is: when emptying phenomenon does not appear in equipment 4, oil pressure in the equipment 4 is higher than the anti-suction Null oil-pressure that load sensitive pump 1 provides, and then the anti-Null oil-pressure of inhaling can not enter in the equipment 4 by first one way valve 6, when emptying phenomenon appears in equipment 4, load sensitive pump 1 will provide the anti-Null oil-pressure of inhaling via first one way valve 6 to equipment 4 by the empty oil circuit 5 of anti-suction.
On the basis of technique scheme, further, improve the empty structure of dipper suction and also comprise reducing valve 9, the oil pressure that reducing valve 9 is used for responsive to load pump 1 and provides reduces pressure, and the anti-Null oil-pressure of inhaling enters into first one way valve 6 after reducing valve 9 reduces pressure; Improve dipper and inhale empty structure and also comprise accumulator 7 and second one way valve 8, accumulator 7 and second one way valve 8 all are arranged on the oil circuit between load sensitive pump 1 and the guide's control device 3; The control oil pressure enters into guide's control device 3 with the order through reducing valve 9, second one way valve 8, accumulator 7; Accumulator 7 is used for providing the control oil pressure to guide's control device 3; Wherein, the oil pressure that provides by reducing valve 9 responsive to load pumps 1 reduces pressure and makes that the anti-Null oil-pressure of inhaling can be because of the excessive guide's of the damage control device 3 of pressure with the control oil pressure.
Concrete, when emptying phenomenon did not appear in equipment 4, the anti-Null oil-pressure of inhaling was after reducing valve 9 decompressions, and the anti-pressure of Null oil-pressure of inhaling is less than the oil pressure in the big chamber 10 of equipment 4, first one way valve 6 is closure state, and anti-suction Null oil-pressure does not enter into the big chamber 10 of equipment 4; The control oil pressure enters into guide's control device 3 through after the decompression of reducing valve 9 through second one way valve 8 and accumulator 7, controls oil pressure simultaneously and also provides oil pressure to accumulator 7, and the oil pressure of guide's control device 3 is provided by the control oil pressure that load sensitive pump 1 provides;
Concrete, when emptying phenomenon appears in equipment 4, equipment 4 is owing to emptying phenomenon occurs, make the oil pressure in the oil sucting cavity of equipment 4 be almost equal to zero, the anti-Null oil-pressure of inhaling is in first one way valve 6 enters into the big chamber 10 of equipment 4, meanwhile, load sensitive pump 1 does not provide the control oil pressure to guide's control device 3; Oil pressure in the accumulator 7 will provide the control oil pressure to guarantee the operate as normal of guide's control device 3 to guide's control device 3.
On the basis of technique scheme, further, equipment 4 is oil cylinder, and equipment 4 comprises big chamber 10 and loculus 11, and the anti-Null oil-pressure of inhaling enters in the big chamber 10 of equipment 4; Guide's control device 3 is hydraulic control lever; Wherein, because the big chamber 10 of equipment 4 is prone to emptying phenomenon most, therefore, preferably, the anti-Null oil-pressure of inhaling enters in the big chamber 10 of equipment 4, and simultaneously, the anti-Null oil-pressure of inhaling also can be applied in other hydraulic units that emptying phenomenon occurs according to technique scheme.
From the various embodiments described above as can be seen, advantage of the present invention is:
1, load sensitive pump is inhaled empty oil circuit and is provided the anti-Null oil-pressure of inhaling to equipment by anti-, has avoided the hydraulic system of hydraulic crawler excavator because speed lifting or equipment carry out the emptying phenomenon that composition operation causes.
2, by utilizing accumulator to provide anti-when inhaling Null oil-pressure at load sensitive pump to equipment, continue to provide the control oil pressure to guide's control device, make guide's control device to work on.
3, simple in structure, easy and simple to handle.
The embodiment of the invention also provides a kind of hydraulic crawler excavator, this hydraulic crawler excavator is provided with above-mentioned any and improves the structure that dipper is inhaled sky, because improving the empty structure of dipper suction, above-mentioned any have above-mentioned technique effect, therefore, be provided with this hydraulic crawler excavator that improves the empty structure of dipper suction and also should possess corresponding technique effect, its specific implementation process is similar to the above embodiments, does not give unnecessary details now.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. one kind is improved the structure that dipper is inhaled sky, is applied in the hydraulic system of excavator, and described hydraulic system comprises load sensitive pump (1), load-sensitive valve (2), equipment (4) and guide's control device (3); Described load sensitive pump (1) is provided for controlling the control oil pressure of described load-sensitive valve (2) to described guide's control device (3), described load sensitive pump (1) is provided for controlling the operating oil pressure of described equipment (4) to described load-sensitive valve (2), described guide's control device (3) carries out control operation by the oil pressure that receives to described load-sensitive valve (2), carries out the difference action to control described equipment (4) by described load-sensitive valve (2); It is characterized in that the described empty structure of dipper suction of improving comprises anti-empty oil circuit (5) and first one way valve (6) inhaled;
Described first one way valve (6) is arranged on the empty oil circuit of described anti-suction (5); Described load sensitive pump (1) is used for providing the anti-Null oil-pressure of inhaling to described equipment (4), and described anti-suction Null oil-pressure enters into described equipment (4) from described load sensitive pump (1) through described first one way valve (6).
2. improve dipper according to claim 1 and inhale empty structure, it is characterized in that, also comprise reducing valve (9), the oil pressure that described reducing valve (9) is used for described load sensitive pump (1) is provided reduces pressure, and described anti-suction Null oil-pressure enters into described first one way valve (6) after described reducing valve (9) reduces pressure.
3. as described in claim 2, improve the structure that dipper is inhaled sky, it is characterized in that, also comprise accumulator (7) and second one way valve (8), described accumulator (7) and described second one way valve (8) all are arranged on the oil circuit between described load sensitive pump (1) and the described guide's control device (3); Described control oil pressure enters into described guide's control device (3) with the order through described reducing valve (9), described second one way valve (8), described accumulator (7); Described accumulator (7) is used for providing described control oil pressure to described guide's control device (3).
4. as described in the claim 1 to 3 any one, improve the structure that dipper is inhaled sky, it is characterized in that described equipment (4) is oil cylinder.
5. improve dipper according to claim 1 and inhale empty structure, it is characterized in that described guide's control device (3) is hydraulic control lever.
6. a hydraulic crawler excavator is characterized in that, includes any described dipper that improves of aforesaid right requirement 1-5 and inhales empty structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310205836.0A CN103276762B (en) | 2013-05-28 | 2013-05-28 | A kind of structure and hydraulic crawler excavator improving bucket rod suction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310205836.0A CN103276762B (en) | 2013-05-28 | 2013-05-28 | A kind of structure and hydraulic crawler excavator improving bucket rod suction |
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| Publication Number | Publication Date |
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| CN103276762A true CN103276762A (en) | 2013-09-04 |
| CN103276762B CN103276762B (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310205836.0A Active CN103276762B (en) | 2013-05-28 | 2013-05-28 | A kind of structure and hydraulic crawler excavator improving bucket rod suction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608207A (en) * | 2019-09-19 | 2019-12-24 | 柳州柳工挖掘机有限公司 | Emergency unloading device for hydraulic actuating element of engineering machinery |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85103931A (en) * | 1985-05-03 | 1986-10-29 | 维克斯公司 | Actuating unit |
| EP1126088A2 (en) * | 2000-02-18 | 2001-08-22 | Deere & Company | Hydraulic system for the dampening of inertia load |
| CN1427186A (en) * | 2001-12-20 | 2003-07-02 | 沃尔沃建造设备控股（瑞典）有限公司 | Device for controlling flow in heavy construction equipment |
| JP2005291312A (en) * | 2004-03-31 | 2005-10-20 | Kobelco Contstruction Machinery Ltd | Hydraulic control circuit and construction machinery |
| CN101858368A (en) * | 2010-05-13 | 2010-10-13 | 山东泰丰液压设备有限公司 | Multiple directional control valve system for return oil throttle control with load sensitive pressure compensation |
| CN101956405A (en) * | 2010-07-15 | 2011-01-26 | 吉林大学 | Gravitational potential energy recovery device during descending of engineering machinery movable arm |
| CN102108982A (en) * | 2009-12-29 | 2011-06-29 | 沃尔沃建造设备控股（瑞典）有限公司 | Negative control type hydraulic system |
-
2013
- 2013-05-28 CN CN201310205836.0A patent/CN103276762B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85103931A (en) * | 1985-05-03 | 1986-10-29 | 维克斯公司 | Actuating unit |
| EP1126088A2 (en) * | 2000-02-18 | 2001-08-22 | Deere & Company | Hydraulic system for the dampening of inertia load |
| CN1427186A (en) * | 2001-12-20 | 2003-07-02 | 沃尔沃建造设备控股（瑞典）有限公司 | Device for controlling flow in heavy construction equipment |
| JP2005291312A (en) * | 2004-03-31 | 2005-10-20 | Kobelco Contstruction Machinery Ltd | Hydraulic control circuit and construction machinery |
| CN102108982A (en) * | 2009-12-29 | 2011-06-29 | 沃尔沃建造设备控股（瑞典）有限公司 | Negative control type hydraulic system |
| CN101858368A (en) * | 2010-05-13 | 2010-10-13 | 山东泰丰液压设备有限公司 | Multiple directional control valve system for return oil throttle control with load sensitive pressure compensation |
| CN101956405A (en) * | 2010-07-15 | 2011-01-26 | 吉林大学 | Gravitational potential energy recovery device during descending of engineering machinery movable arm |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608207A (en) * | 2019-09-19 | 2019-12-24 | 柳州柳工挖掘机有限公司 | Emergency unloading device for hydraulic actuating element of engineering machinery |
| CN110608207B (en) * | 2019-09-19 | 2021-05-14 | 柳州柳工挖掘机有限公司 | Emergency unloading device for hydraulic actuating element of engineering machinery |
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| Publication number | Publication date |
|---|---|
| CN103276762B (en) | 2016-03-30 |
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Effective date of registration: 20160229 Address after: 215500 southeast Road, Changshu Southeast Economic Development Zone, Suzhou, Jiangsu, Changshou City Applicant after: Changshu Huawei Track Co.,Ltd. Address before: 201306 Pudong New Area Port Industrial Park, Shanghai, No. two port road, block A, 318 Applicant before: Shanghai Sany Heavy Machinery Co., Ltd. |
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Effective date of registration: 20171123 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. |