CN203130677U - Hydraulic circuit with self-preheating function and excavator with same - Google Patents
Hydraulic circuit with self-preheating function and excavator with same Download PDFInfo
- Publication number
- CN203130677U CN203130677U CN 201320161787 CN201320161787U CN203130677U CN 203130677 U CN203130677 U CN 203130677U CN 201320161787 CN201320161787 CN 201320161787 CN 201320161787 U CN201320161787 U CN 201320161787U CN 203130677 U CN203130677 U CN 203130677U
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- Prior art keywords
- valve
- preheating
- hydraulic circuit
- oil
- pump
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- Expired - Fee Related
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- 239000002828 fuel tank Substances 0.000 claims description 13
- 230000008676 import Effects 0.000 claims description 13
- 239000000945 filler Substances 0.000 claims description 8
- 239000012530 fluid Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 51
- 239000007788 liquid Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000011176 pooling Methods 0.000 description 2
- 230000002277 temperature effect Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides a hydraulic circuit with from preheating function, this hydraulic circuit with from preheating function include preheating valve (10), pump and oil tank (T0), there is orifice (14) inside the valve body of preheating valve (10), preheating valve (10) inside is equipped with preheats passageway (16), inlet (16a) of preheating passageway (16) with the oil-out of overflow valve (20) is connected, export (16b) of preheating passageway (16) with oil tank (T0) intercommunication, the oil inlet of overflow valve (20) with the pump is connected. The utility model discloses an inside preheating channel that adds of preheating valve (10) of taking orifice (14), with high temperature fluid drainage to preheating valve (10) of overflow valve (20) oil outlet department, this process does not consume extra energy completely, has very high economic practicality, in addition, under the condition that does not increase other heat sources, the temperature that makes valve body itself risees in the short time, preheating valve (10) have been eliminated because of receiving the phenomenon that low temperature influences the orifice and takes place "shrinkage", thereby preheating valve (10) operating performance at low temperature has been improved.
Description
Technical field
The utility model relates to Hydraulic Field, relates in particular to have from the oil hydraulic circuit of rre-heated and have its excavator.
Background technique
The operating characteristics of the hydrovalve of engineering machinery plays a part very important to work and the Safety performance of complete machine.Be provided with throttle orifice in the valve body of a lot of hydrovalves.Such as, the trimmer valve of excavator is provided with one-way valve and throttle orifice in the valve body of this trimmer valve.This trimmer valve is located between the main valve and pilot valve of excavator, and described pilot valve, main valve and trimmer valve constitute a kind of urgency of excavator and stop damping device.This trimmer valve can effectively reduce rocking of car body that operator's urgent shut-down operation causes itself, and described pooling feature is inoperative when making operator's reverse operating simultaneously.
Above-mentioned trimmer valve is to regulate the commutating speed of valve core of main valve by the meter out of its throttle orifice, makes the soft effect of digger operating device action thereby reach, and reduces rocking of impact and fuselage.Reverse operating is not by realizing that with the one-way valve of restriction effect pooling feature is inoperative.When but above-mentioned trimmer valve (about 0 ℃) under low temperature condition uses, because hydraulic oil viscosity increases under the low temperature, make the oil filling capacity variation of throttle orifice, " shrinkage " phenomenon can take place in the throttle orifice of adding trimmer valve at low temperatures, further worsen the oil filling capacity of throttle orifice, caused the working state of excavator to be easy to generate action delay and to be easy to generate the hair fastener phenomenon.This phenomenon had both influenced the working efficiency of excavator, also brought great potential safety hazard.
The model utility content
The utility model provides a kind of oil hydraulic circuit from rre-heated of having of energy-conservation, the hydrovalve operating characteristics that can improve the band throttle orifice.
The utility model provides has oil hydraulic circuit from rre-heated, this oil hydraulic circuit comprises heat-riser valve, pump, fuel tank and connects the hydraulic pipe line of described pump, heat-riser valve and fuel tank, comprise throttle orifice and oil duct in the valve body of described heat-riser valve, described heat-riser valve inside is provided with preheating passage, described preheating passage and described oil duct are separate, and described preheating passage comprises import and outlet; Described oil hydraulic circuit also comprises relief valve, described relief valve comprises a filler opening and an oil outlet, the import of described preheating passage is connected with the oil outlet of described relief valve, and the outlet of described preheating passage is communicated with described fuel tank, and the filler opening of described relief valve is connected with described pump.
Preferably, described pump is main pump.
Preferably, described pump is pioneer pump.
Preferably, described heat-riser valve comprises an attachment face, and the import of described preheating passage and outlet all are located on the described attachment face.
Preferably, described preheating passage is near described throttle orifice, and described preheating passage is " U " shape in the inside of described heat-riser valve, and is surrounded on the periphery of the spool of described heat-riser valve.
Preferably, described preheating passage is positioned on the valve body of described heat-riser valve the side near described throttle orifice.
The utility model also provides a kind of excavator, and it comprises the oil hydraulic circuit that has from rre-heated, and the described oil hydraulic circuit that has from rre-heated is the above-mentioned oil hydraulic circuit that has from rre-heated.
Preferably, described heat-riser valve is trimmer valve, and described pump is pioneer pump, is used for the equipment motion that the guide controls described excavator.
The utility model provides has oil hydraulic circuit from rre-heated, by setting up preheating passage in the heat-riser valve inside of band throttle orifice, and the import of this preheating passage is connected with the outlet of relief valve, the outlet of preheating passage is communicated with fuel tank, Placement like this, namely, pump is entered the high-temperature oil liquid drainage of fuel tank to heat-riser valve through being about to of flowing out of relief valve, this process does not consume the extra energy fully, has very high economic and practical, in addition, do not increase under the situation of other thermals source, the temperature of valve body itself is raise at short notice, eliminated heat-riser valve and because being subjected to the low temperature effect throttle orifice phenomenon of " shrinkage " has taken place, thereby improved heat-riser valve operating characteristics at low temperatures.
Description of drawings
Fig. 1 is the utility model one embodiment's the hydraulic circuit diagram from rre-heated of having;
Fig. 2 is the structural representation of the heat-riser valve among Fig. 1;
Fig. 3 is along M-M schematic cross-section among Fig. 2.
Symbol description
10, heat-riser valve 12, one-way valve 13, selector valve 14, throttle orifice
16, preheating passage 16a, import 16b, outlet 18, attachment face
20, relief valve 30, pioneer pump 32, working pump T0, fuel tank
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.Should be understood that embodiment described herein only is used for description and interpretation the utility model, is not limited to the utility model.
See also Fig. 1, the utility model provides a kind of oil hydraulic circuit that has from rre-heated, and described oil hydraulic circuit comprises heat-riser valve 10, fuel tank T0, relief valve 20 and pump.
In the present embodiment, described heat-riser valve 10 comprises throttle orifice 14 and one-way valve 12, and described throttle orifice 14 is connected in parallel with one-way valve 12.The valve inner of described heat-riser valve 10 has preheating passage 16 and each oil duct, and this preheating passage 16 does not link to each other with other oil ducts in the valve body of heat-riser valve 10,, namely the interior oil duct of preheating passage 16 and heat-riser valve 10 is separate.Described preheating passage 16 comprises import 16a and outlet 16b.The high temperature fluid medium enters the preheating passage 16 of valve inner from the import 16a of preheating passage 16, outlet 16b from preheating passage 16 flows out again, the high temperature fluid medium that continues will make the valve inner of heat-riser valve 10 keep certain temperature, and then can carry out preheating to the fluid in the oil duct, also avoid the throttle orifice 14 of described heat-riser valve 10 that " shrinkage " phenomenon takes place simultaneously.In order to increase pre-heat effect, described preheating passage 16 is near the spool of described heat-riser valve 10.When integrated valve that described heat-riser valve 10 is combined into for the multi-disc valve, described preheating passage 16 must near and cross over other spools of heat-riser valve 10 inside.
See also Fig. 2, described heat-riser valve 10 has at least one attachment face 18, is furnished with oil outlet and/or the filler opening of each oil duct on the described attachment face 18.In order to make the outward appearance compact in design of described heat-riser valve 10, in the present embodiment, import 16a and the outlet 16b of described preheating passage 16 all is arranged at the same attachment face 18 of described heat-riser valve 10; See also Fig. 3, described preheating passage 16 is " U " shape in heat-riser valve 10 inside, and preheating passage 16 is near the spool of described heat-riser valve 10, particularly, and near the throttle orifice in the heat-riser valve 10.The layout of above-mentioned preheating passage 16 has further increased the pre-heat effect of heat-riser valve 10, makes that also the outward appearance layout of heat-riser valve 10 is neat, compact simultaneously.
In the present embodiment, this heat-riser valve 10 is the trimmer valve of excavator, the inside of described trimmer valve is integrated one-way valve 12, throttle orifice 14 and selector valve 13, described selector valve 13 comprises two actuator port B, D, an oil return inlet T ' and two control port A, C, described throttle orifice 14 is connected in parallel with one-way valve 12, the control port A of described selector valve 13 is connected with an end of corresponding described one-way valve 12 and an end of throttle orifice 14 simultaneously, and the other end of the other end of described one-way valve 12 and throttle orifice 14 is connected with the corresponding actuator port B of described selector valve 13 simultaneously; The Placement of the control port B of described selector valve 13 is identical with the Placement of its control port A, does not repeat them here.When selector valve 13 is in off working state, from the fluid of actuator port B or D through throttle orifice 14 to control port A or C, and then realize 14 pairs of throttlings from actuator port B or D of throttle orifice.
Be understandable that heat-riser valve of the present utility model is not limited to above-mentioned trimmer valve, the valve body that every valve inner has throttle orifice all is suitable for.
For energy saving, avoid the extra extraneous high temperature fluid medium of introducing, in the present embodiment, with the high-temperature oil liquid drainage at the oil outlet place of described relief valve 20 to described preheating passage 16, particularly, described relief valve 20 comprises a filler opening and an oil outlet, the import 16a of described preheating passage 16 is connected with the oil outlet of described relief valve 20, the outlet 16b of described preheating passage 16 is communicated with described fuel tank T0, the filler opening of described relief valve 20 is communicated with described pump, described pump is that hydraulic system produces high-voltage oil liquid, particularly, the described relief valve 20 of connecting between the oil outlet end of described pump and the described fuel tank T0, the filler opening of described relief valve 20 is connected with the oil outlet end of described pump, and the oil outlet of described relief valve 20 is communicated with described fuel tank T0 by described preheating passage.With the high-temperature oil liquid of heat-riser valve 10 valve bodies of the flowing through outlet 16b drainage oil sump tank T0 from preheating passage 16, this process has avoided increasing other extra thermals source, and to add hot fluid medium be that heat-riser valve 10 carries out preheating, do not consume the extra energy fully, energy saving has very high economic and practical.
In the present embodiment, described pump is pioneer pump 30, and described pioneer pump 30 provides high-voltage oil liquid for guide's oil circuit of hydraulic system.The pressure oil at the oil outlet place of pioneer pump 30 is flowed through high-temperature oil liquid behind the relief valve 20 as thermal source, because the pressure oil at pioneer pump 30 outlet 16b places is relatively stable, can not occur often oil being arranged and do not have the oily condition often, therefore can guarantee that described heat-riser valve 10 is in preheat mode always, guarantee the normal operation of heat-riser valve 10.Be understandable that the import 16a of heat-riser valve 10 of the present utility model also can link to each other with other relief valves, such as with provide the relief valve at the working pump 32 oil outlet places of pressure oil to link to each other etc. for hydraulic jack or motor.Be understandable that the pump of the utility model indication also can be main pump, described main pump provides high-voltage oil liquid for the equipment of hydraulic system, drives equipment work.
The utility model utilize pump to flow through high-temperature oil liquid preheating trimmer valve that relief valve 20 produces, do not increase other thermals source, the temperature of valve body itself is raise at short notice, eliminate heat-riser valve 10 and be subjected to low temperature effect to make throttle orifice 14 that the phenomenon of " shrinkage " take place, improved the operating characteristics under heat-riser valve 10 low temperature.
Be understandable that the oil hydraulic circuit that has from rre-heated of the present utility model not only is suitable for hydraulic oil liquid, also can suitable water etc. other flowing mediums.
Be understandable that the utility model is not the hydrovalve that a limiting valve body inside has throttle orifice yet, as long as the inside of valve body needs preheating, scheme of the present utility model can reach same effect.
The utility model also provides a kind of excavator, and described excavator comprises the oil hydraulic circuit that has from rre-heated, and the described oil hydraulic circuit that has from rre-heated is the above-mentioned oil hydraulic circuit that has from rre-heated.
Be understandable that the utility model not only is suitable for excavator, also be suitable for the engineering machinery that each need carry out preheating to valve.
Below describe a preferred implementation of the present utility model by reference to the accompanying drawings in detail, still, be not limited to the detail in the above-mentioned mode of execution.In technical conceive scope of the present utility model, can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
Claims (8)
1. oil hydraulic circuit that has from rre-heated, comprise pump, heat-riser valve (10), fuel tank (T0) and connect the hydraulic pipe line of described pump, heat-riser valve and fuel tank, comprise throttle orifice (14) and oil duct in the valve body of described heat-riser valve (10), it is characterized in that: described heat-riser valve (10) inside is provided with preheating passage (16), described preheating passage (16) is separate with described oil duct, and described preheating passage (16) comprises import (16a) and outlet (16b); Described oil hydraulic circuit also comprises the relief valve (20) on the hydraulic pipe line that is arranged between described pump and the described heat-riser valve, described relief valve (20) comprises a filler opening and an oil outlet, the import (16a) of described preheating passage (16) is connected with the oil outlet of described relief valve (20), the outlet (16b) of described preheating passage (16) is communicated with described fuel tank (T0), and the filler opening of described relief valve (20) is connected with described pump.
2. the oil hydraulic circuit that has from rre-heated as claimed in claim 1, it is characterized in that: described pump is main pump.
3. the oil hydraulic circuit that has from rre-heated as claimed in claim 1, it is characterized in that: described pump is pioneer pump (30).
4. the oil hydraulic circuit that has from rre-heated as claimed in claim 1, it is characterized in that: described heat-riser valve (10) comprises an attachment face (18), the import (16a) of described preheating passage (16) and outlet (16b) all are located on the described attachment face (18).
5. the oil hydraulic circuit that has from rre-heated as claimed in claim 4, it is characterized in that: described preheating passage (16) is " U " shape in the inside of described heat-riser valve (10), and is surrounded on the periphery of the spool of described heat-riser valve (10).
6. the oil hydraulic circuit that has from rre-heated as claimed in claim 5 is characterized in that: described preheating passage (16) is positioned on the valve body of described heat-riser valve (10) side near described throttle orifice (14).
7. excavator, it comprises the oil hydraulic circuit that has from rre-heated, it is characterized in that: the described oil hydraulic circuit that has from rre-heated is each described oil hydraulic circuit that has from rre-heated of claim 1-6.
8. excavator as claimed in claim 7, it is characterized in that: described heat-riser valve (10) is trimmer valve, and described pump is pioneer pump (30), is used for the equipment motion that the guide controls described excavator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320161787 CN203130677U (en) | 2013-04-02 | 2013-04-02 | Hydraulic circuit with self-preheating function and excavator with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320161787 CN203130677U (en) | 2013-04-02 | 2013-04-02 | Hydraulic circuit with self-preheating function and excavator with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203130677U true CN203130677U (en) | 2013-08-14 |
Family
ID=48938657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320161787 Expired - Fee Related CN203130677U (en) | 2013-04-02 | 2013-04-02 | Hydraulic circuit with self-preheating function and excavator with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203130677U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107288958A (en) * | 2017-08-22 | 2017-10-24 | 徐州徐工挖掘机械有限公司 | A kind of hydraulic crawler excavator guide hydraulic pressure pre-heating system and pre-heating mean |
| CN111336146A (en) * | 2020-03-18 | 2020-06-26 | 中国商用飞机有限责任公司 | Method for operating an electric pump for an aircraft hydraulic system |
-
2013
- 2013-04-02 CN CN 201320161787 patent/CN203130677U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107288958A (en) * | 2017-08-22 | 2017-10-24 | 徐州徐工挖掘机械有限公司 | A kind of hydraulic crawler excavator guide hydraulic pressure pre-heating system and pre-heating mean |
| CN111336146A (en) * | 2020-03-18 | 2020-06-26 | 中国商用飞机有限责任公司 | Method for operating an electric pump for an aircraft hydraulic system |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20200402 |