CN202390879U - Excavator, control valve and pressure switch system of control valve - Google Patents
Excavator, control valve and pressure switch system of control valve Download PDFInfo
- Publication number
- CN202390879U CN202390879U CN2011205376380U CN201120537638U CN202390879U CN 202390879 U CN202390879 U CN 202390879U CN 2011205376380 U CN2011205376380 U CN 2011205376380U CN 201120537638 U CN201120537638 U CN 201120537638U CN 202390879 U CN202390879 U CN 202390879U
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- Prior art keywords
- pressure switch
- pipeline
- control valve
- switch body
- pipeline portions
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- Expired - Fee Related
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Abstract
The utility model provides an excavator, a control valve and a pressure switch system of the control valve, which are used for solving the problem that the pressure switch system is easy to damage. The pressure switch system comprises a pressure detection end and a buffering device, wherein the buffering device is connected with a pressure switch body; the buffering device comprises an oil conveying pipeline; the oil conveying pipeline comprises a first pipeline part and a second pipeline part; the diameter of the second pipeline part is greater than that of the first pipeline part; the oil conveying pipeline is communicated to the pressure detection end; and the second pipeline part is connected with the pressure detection end. The excavator, the control valve and the pressure switch system of the control valve have the advantages that a hydraulic impact force directly applied on the pressure switch body is reduced simultaneously when the normal work of the pressure switch body is guaranteed, so as to realize the aim of prolonging the service life of the pressure switch body.
Description
Technical field
The utility model relates to technical field of engineering machinery, refers in particular to a kind of excavator, control valve and pressure switch system thereof.
Background technology
Excavator is a kind of of engineering machinery, is widely used in engineering fields such as building, road, mine, and main effect is to carry out digging operation.
Fig. 1 is the shape assumption diagram of the excavator of prior art; As shown in the figure; With the crawler hypraulic excavator is example, and excavator comprises that mainly driver's cabin 140, motor 150, crawler belt 160 and hydraulic control part and electrical control division grade, and working portion comprises scraper bowl (bucket) 110, dipper (arm) 120 and swing arm (boom) 130; The parts of each working portion are swung around pin joint under the effect of hydraulic control part and electric control system, accomplish actions such as excavating, promote and unload soil.
Usually; Hydraulic control part in the excavator is made up of hydraulic pump, control valve, hydraulic cylinder, hydraulic motor, pipeline and fuel tank etc.; And control valve is contained in the middle of motor and the driver's cabin; Effect is to be provided to each executive component according to the hydraulic oil that hydraulic pump is discharged in operator's instruction, makes excavator accomplish exercises.
Fig. 2 is the structural representation of prior art control valve, and pressure switch 170 directly links to each other with control valve 100, when the hydraulic oil of control valve 100 outputs reaches predetermined pressure, pressure switch 170 is opened, and hydraulic oil is provided to corresponding executive component.Yet because pressure switch 170 directly is connected with control valve 100, both junction pressure is bigger, causes the single article of pressure switch often to damage, and the life-span of pressure switch is reduced.
The utility model content
The purpose of the utility model technical scheme provides a kind of excavator, control valve and pressure switch system thereof, solves the prior art pressure switch system and damages easily, the problem that the life-span reduces.
For realizing above-mentioned purpose, the one side of the utility model specific embodiment provides a kind of pressure switch system, and adopts following technical scheme:
Pressure switch system comprises: the pressure switch body comprises the pressure detecting end; Snubber; Be connected with said pressure switch body; Said snubber comprises pipeline road, and wherein said pipeline road comprises first pipeline portions and second pipeline portions, and the diameter of said second pipeline portions is greater than the diameter of said first pipeline portions; Said pipeline road is communicated to said pressure detecting end, and said second pipeline portions is connected with said pressure detecting end.
Further, said first pipeline portions is connected with the hydraulic oil output of a control valve.
Further, said second pipeline portions is provided with internal thread, and through said internal thread, said snubber spiral shell is located on the said pressure switch body.
According to another aspect of the present invention, a kind of control valve is provided, and adopts following technical scheme:
Control valve comprises the hydraulic oil output, and said hydraulic oil output is connected with a pressure switch system, and said pressure switch system comprises: the pressure switch body comprises the pressure detecting end; Snubber; Be connected with said pressure switch body; Said snubber comprises pipeline road, and wherein said pipeline road comprises first pipeline portions and second pipeline portions, and the diameter of said second pipeline portions is greater than the diameter of said first pipeline portions; Said pipeline road is communicated to said pressure detecting end, and said second pipeline portions is connected with said pressure detecting end.
Further, said first pipeline portions is connected with said hydraulic oil output.
Further, said second pipeline portions is provided with internal thread, and through said internal thread, said snubber spiral shell is located on the said pressure switch body.
According to a further aspect of the invention, a kind of excavator is provided, and adopts following technical scheme:
Excavator comprises control valve, and said control valve comprises: the hydraulic oil output; Pressure switch system is connected with said hydraulic oil output, and wherein said pressure switch system comprises: the pressure switch body comprises the pressure detecting end; Snubber; Be connected with said pressure switch body; Said snubber comprises pipeline road, and wherein said pipeline road comprises first pipeline portions and second pipeline portions, and the diameter of said second pipeline portions is greater than the diameter of said first pipeline portions; Said pipeline road is communicated to said pressure detecting end, and said second pipeline portions is connected with said pressure detecting end.
Further, said first pipeline portions is connected with said hydraulic oil output.
Further, said second pipeline portions is provided with internal thread, and through said internal thread, said snubber spiral shell is located on the said pressure switch body.
In the utility model specific embodiment technique scheme at least one has following beneficial effect:
On original pressure switch body, a snubber is set; Slow down the pressure of control valve output hydraulic oil to pressure switch body through snubber; Thereby when guaranteeing pressure switch body operate as normal, reduced the hydraulic shock power that the pressure switch body directly receives, reached and improve the pressure switch body purpose in application life.
Description of drawings
Fig. 1 is the shape assumption diagram of the excavator of prior art;
Fig. 2 is the structural representation of prior art control valve;
Fig. 3 is the structural representation of the said control valve of the utility model specific embodiment;
Fig. 4 is in the said pressure switch system of the utility model specific embodiment, the schematic cross-section of snubber.
The specific embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer, will combine accompanying drawing and specific embodiment that the utility model is described in detail below.
Fig. 3 is the structural representation of the said control valve of the utility model specific embodiment, and Fig. 4 is in the said pressure switch system of the utility model specific embodiment, the schematic cross-section of snubber.
Like Fig. 4, the said pressure switch system of the utility model specific embodiment, the structure of institute's employing snubber 10 comprises:
Consult Fig. 3, the structural representation that pressure switch system is connected with control valve 30, this pressure switch system comprises:
The snubber 10 of structure shown in Figure 4; Wherein this snubber 10 is connected with pressure switch body 20; The pipeline road 11 of snubber 10 is communicated to the pressure detecting end of pressure switch body 20; Second pipeline portions 12 that diameter is bigger is connected with the pressure detecting end of pressure switch body 20, and the first less pipeline portions 13 of diameter is connected with the hydraulic oil output of control valve 30.
In addition, also be provided with internal thread 14 on second pipeline portions 12 of snubber 10, through this internal thread 14, snubber 10 is tightened against on the pressure switch body 20.
Adopt the snubber 10 of structure shown in Figure 4; The hydraulic oil that hydraulic oil output through control valve 30 flows out; When getting into snubber 10 and since with the diameter of pressure switch body 20 direct-connected second pipeline portions 12 greater than is connected with control valve 30 the diameter of first pipeline portions 13, therefore make the flow velocity reduction of hydraulic oil through increasing section; Play the compensator or trimmer pressure effect; Thereby the pressure that gets into the hydraulic oil of pressure switch body 20 reduces, and when guaranteeing pressure switch body 20 operate as normal, has reduced the hydraulic shock power that the pressure switch body directly receives, and reaches to improve the pressure switch body purpose in 20 application lifes.
The utility model specific embodiment also provides a kind of control valve on the other hand, and the structure of this control valve 30 is as shown in Figure 3, is connected with pressure switch system, and wherein this pressure switch system comprises:
The snubber 10 of structure shown in Figure 4; Wherein this snubber 10 is connected with pressure switch body 20; The pipeline road 11 of snubber 10 is communicated to the pressure detecting end of pressure switch body 20; Second pipeline portions 12 that diameter is bigger is connected with the pressure detecting end of pressure switch body 20, and the first less pipeline portions 13 of diameter is connected with the hydraulic oil output of control valve 30;
In addition, also be provided with internal thread 14 on second pipeline portions 12 of snubber 10, through this internal thread 14, snubber 10 is tightened against on the pressure switch body 20.
In addition, the utility model specific embodiment the excavator with structure control valve shown in Figure 3 also is provided on the other hand, this control valve comprises:
The hydraulic oil output;
Pressure switch system is connected with said hydraulic oil output, and wherein said pressure switch system comprises:
The pressure switch body comprises the pressure detecting end;
Snubber; Be connected with said pressure switch body, said snubber comprises pipeline road, and wherein said pipeline road comprises first pipeline portions and second pipeline portions; The diameter of said second pipeline portions is greater than the diameter of said first pipeline portions; Said pipeline road is communicated to said pressure detecting end, and said second pipeline portions is connected with said pressure detecting end, and said first pipeline portions is connected with the hydraulic oil output of control valve.
In addition, also be provided with internal thread on second pipeline portions of snubber, through this internal thread, snubber is tightened against on the pressure switch body.
Said excavator of the utility model specific embodiment and control valve thereof, pressure switch system; On original pressure switch body, a snubber is set; Slow down the pressure of control valve output hydraulic oil to pressure switch body through snubber; Thereby when guaranteeing pressure switch body operate as normal, reduced the hydraulic shock power that the pressure switch body directly receives, reached and improve the pressure switch body purpose in application life.
The above only is the preferred implementation of the utility model; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; Can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection domain of the utility model.
Claims (9)
1. a pressure switch system is characterized in that, comprising:
The pressure switch body comprises the pressure detecting end;
Snubber; Be connected with said pressure switch body; Said snubber comprises pipeline road, and wherein said pipeline road comprises first pipeline portions and second pipeline portions, and the diameter of said second pipeline portions is greater than the diameter of said first pipeline portions; Said pipeline road is communicated to said pressure detecting end, and said second pipeline portions is connected with said pressure detecting end.
2. pressure switch system as claimed in claim 1 is characterized in that, said first pipeline portions is connected with the hydraulic oil output of a control valve.
3. pressure switch system as claimed in claim 1 is characterized in that, said second pipeline portions is provided with internal thread, and through said internal thread, said snubber spiral shell is located on the said pressure switch body.
4. a control valve comprises the hydraulic oil output, and said hydraulic oil output is connected with a pressure switch system, it is characterized in that, said pressure switch system comprises:
The pressure switch body comprises the pressure detecting end;
Snubber; Be connected with said pressure switch body; Said snubber comprises pipeline road, and wherein said pipeline road comprises first pipeline portions and second pipeline portions, and the diameter of said second pipeline portions is greater than the diameter of said first pipeline portions; Said pipeline road is communicated to said pressure detecting end, and said second pipeline portions is connected with said pressure detecting end.
5. control valve as claimed in claim 4 is characterized in that, said first pipeline portions is connected with said hydraulic oil output.
6. control valve as claimed in claim 5 is characterized in that, said second pipeline portions is provided with internal thread, and through said internal thread, said snubber spiral shell is located on the said pressure switch body.
7. an excavator comprises control valve, it is characterized in that, said control valve comprises:
The hydraulic oil output;
Pressure switch system is connected with said hydraulic oil output, and wherein said pressure switch system comprises:
The pressure switch body comprises the pressure detecting end;
Snubber; Be connected with said pressure switch body; Said snubber comprises pipeline road, and wherein said pipeline road comprises first pipeline portions and second pipeline portions, and the diameter of said second pipeline portions is greater than the diameter of said first pipeline portions; Said pipeline road is communicated to said pressure detecting end, and said second pipeline portions is connected with said pressure detecting end.
8. excavator as claimed in claim 7 is characterized in that, said first pipeline portions is connected with said hydraulic oil output.
9. excavator as claimed in claim 8 is characterized in that, said second pipeline portions is provided with internal thread, and through said internal thread, said snubber spiral shell is located on the said pressure switch body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205376380U CN202390879U (en) | 2011-12-20 | 2011-12-20 | Excavator, control valve and pressure switch system of control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205376380U CN202390879U (en) | 2011-12-20 | 2011-12-20 | Excavator, control valve and pressure switch system of control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202390879U true CN202390879U (en) | 2012-08-22 |
Family
ID=46665815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205376380U Expired - Fee Related CN202390879U (en) | 2011-12-20 | 2011-12-20 | Excavator, control valve and pressure switch system of control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202390879U (en) |
-
2011
- 2011-12-20 CN CN2011205376380U patent/CN202390879U/en not_active Expired - Fee Related
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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: 20120822 Termination date: 20161220 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |