CN201486462U - Inverted flux control hydraulic system of rotary drilling rig and rotary drilling rig employing same - Google Patents
Inverted flux control hydraulic system of rotary drilling rig and rotary drilling rig employing same Download PDFInfo
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- CN201486462U CN201486462U CN2009201730839U CN200920173083U CN201486462U CN 201486462 U CN201486462 U CN 201486462U CN 2009201730839 U CN2009201730839 U CN 2009201730839U CN 200920173083 U CN200920173083 U CN 200920173083U CN 201486462 U CN201486462 U CN 201486462U
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- drilling rig
- oil
- rotary drilling
- valve
- hydraulic system
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Abstract
The utility model relates to the technical field of hydraulic control systems of a rotary drilling rig, which discloses an inverted flux control hydraulic system of a rotary drilling rig, and comprises a main pump, a main valve and an auxiliary valve, as well as a surplus flux control valve, wherein the surplus flux control valve is provided with an oil inlet, a first oil outlet, a second oil outlet, a load sensing opening and a valve core; the oil inlet of the surplus flux control valve is connected with the oil out let of the main pump, the first oil outlet is connected with the oil inlet of the main valve, the second oil outlet is connected with the oil inlet of the auxiliary valve, and the load sensing opening of the surplus flux control valve is connected with the load sensing opening of the auxiliary valve. The inverted flux control hydraulic system of rotary drilling rig provided by the utility model not only can supply oil for the main and auxiliary valves, but also can realize the inverted flux control of the rotary drilling rig under the condition that only one main valve exists. The utility model provides a rotary drilling rig as well.
Description
Technical field
The utility model relates to rotary drilling rig hydraulic control system technical field, relates in particular to a kind of rotary drilling rig minus flow controlled hydraulic system, also relates to a kind of rotary drilling rig.
Background technology
Characteristics such as rotary drilling rig has that installed power is big, output torque is big, hole quality is good, flexible and convenient operation, efficiency of construction height, environment pollution are little, cooperate different drilling tools, the geologic condition that adapts to the most of area of China has become the main construction machinery that is fit to bored pile construction in the building foundation engineering.
In rotary drilling rig minus flow controlled hydraulic system, two banked direction control valves are arranged, one is main valve, and main valve is a minus flow control banked direction control valves, and another banked direction control valves is auxilliary valve, and auxilliary valve is the load sensing banked direction control valves.Two banked direction control valves just need carry out fuel feeding to it respectively by two oil pumps, need dispose a main pump, an auxilliary pump in the rotary drilling rig usually, and main pump is to the main valve fuel feeding, auxilliary pump is to auxilliary valve fuel feeding, limited by mounting condition, main pump is in the same place with auxilliary series connection of pumps, works simultaneously.
Main pump and auxilliary pump are installed on the chassis of rotary drilling rig usually, because the space on the chassis of rotary drilling rig is limited, two oil pumps are installed simultaneously, will make that the space on chassis of rotary drilling rig is narrower and small, even can't install; In addition, also will increase the complexity of cost of production and electrical control.
The utility model content
First purpose of the present utility model provides a kind of rotary drilling rig minus flow controlled hydraulic system, and this rotary drilling rig minus flow controlled hydraulic system can be under the situation of having only a main pump, both can be to the main valve fuel feeding, and also can be to auxilliary valve fuel feeding.Second purpose of the present utility model provides a kind of rotary drilling rig.
In order to realize above-mentioned first purpose, the utility model provides rotary drilling rig minus flow controlled hydraulic system, comprise main pump, main valve and auxilliary valve, it is characterized in that, also comprise unnecessary flow control valve, this unnecessary flow control valve has oil-in, first oil-out, second oil-out, load sensing mouth; The oil-in of described unnecessary flow control valve is connected with the oil-out of described main pump, described first oil-out is connected with the oil-in of described main valve, described second oil-out is connected with the oil-in of described auxilliary valve, and the load sensing mouth of described unnecessary flow control valve is connected with the load sensing mouth of described auxilliary valve.
Preferably, described main valve is a minus flow control banked direction control valves.
Preferably, described auxilliary valve is the load sensing banked direction control valves.
Preferably, described unnecessary flow control valve also has drain tap, and described drain tap is connected with fuel tank.
Preferably, described drain tap is connected with fuel tank by overflow valve.
Preferably, the described first oil-out place is provided with first pressure tap.
The rotary drilling rig minus flow controlled hydraulic system that the utility model provides, comprise main pump, main valve, auxilliary valve and be arranged on the unnecessary flow control valve at main pump oil-out place, this unnecessary flow control valve has oil-in, first oil-out, second oil-out, load sensing mouth; The oil-in of unnecessary flow control valve is connected with the oil-out of main pump, and first oil-out is connected with the oil-in of main valve, and second oil-out is connected with the oil-in of auxilliary valve, and the load sensing mouth of unnecessary flow control valve is connected with the load sensing mouth of auxilliary valve.
Auxilliary valve is not worked, main valve when work, the spool of unnecessary flow control valve is operated in right position under the effect of the pressure oil of main pump output, first oil-out of unnecessary flow control valve is communicated with oil-in, the oil-out of main pump is communicated with the oil-in of main valve, and main pump is to the main valve fuel feeding; Auxilliary valve work, when main valve is not worked, the load sensing mouth of auxilliary valve sends feedback pressure to the load sensing mouth of unnecessary flow control valve, the spool of unnecessary flow control valve is under the effect of this feedback pressure, be operated in position, a left side, second oil-out of unnecessary flow control valve is communicated with oil-in, the oil-out of main pump is communicated with the oil-in of auxilliary valve, and main pump is to auxilliary valve fuel feeding.
The rotary drilling rig minus flow controlled hydraulic system that the utility model provides under the situation of having only a main pump, both can can realize the minus flow control of rotary drilling rig to auxilliary valve fuel feeding again to the main valve fuel feeding.Like this, on rotary drilling rig, can save an oil pump, make that the space is no longer narrow and small on the chassis of rotary drilling rig, also reduce cost of production simultaneously.
In order to realize above-mentioned second purpose, the utility model also provides a kind of rotary drilling rig, and this rotary drilling rig has above-mentioned rotary drilling rig minus flow controlled hydraulic system.Because above-mentioned rotary drilling rig minus flow controlled hydraulic system has above-mentioned technique effect, the rotary drilling rig with this rotary drilling rig minus flow controlled hydraulic system also should have the corresponding techniques effect.
Description of drawings
The principle schematic of the rotary drilling rig minus flow hydraulic control system that Fig. 1 provides for the utility model;
Wherein, among Fig. 1:
Main pump 1, unnecessary flow control valve 2, first oil-out 21, second oil-out 22, oil-in 23, load sensing mouth 24, drain tap 25, spool 26, first pressure tap 27, second pressure tap 28, overflow valve 3.
The specific embodiment
One of core of the present utility model provides a kind of rotary drilling rig minus flow controlled hydraulic system, and this rotary drilling rig minus flow controlled hydraulic system can be under the situation of having only a main pump, both can be to the main valve fuel feeding, and also can be to auxilliary valve fuel feeding.Another core of the present utility model provides a kind of rotary drilling rig.
Below in conjunction with accompanying drawing content of the present utility model is described, following description only is exemplary and indicative, should any restriction not arranged to protection domain of the present utility model.
Please referring to Fig. 1, the principle schematic of the rotary drilling rig minus flow hydraulic control system that Fig. 1 provides for the utility model.
As shown in Figure 1, the rotary drilling rig minus flow hydraulic control system that the utility model provides comprises main pump 1, main valve, auxilliary valve and unnecessary flow control valve 2, and main valve, auxilliary valve fail to show in Fig. 1.
Wherein, main valve is specially minus flow control banked direction control valves, and auxilliary valve is specially the load sensing banked direction control valves.
Unnecessary flow control valve 2 has first oil-out 21, second oil-out 22, oil-in 23, load sensing mouth 24, spool 26.
The oil-in 23 of unnecessary flow control valve 2 is connected with the oil-out of main pump 1, and first oil-out 21 is connected with the oil-in of main valve, and second oil-out 22 is connected with the oil-in of auxilliary valve, and the load sensing mouth 24 of unnecessary flow control valve is connected with the load sensing mouth of auxilliary valve.
In the preferred version, excessive in order to prevent the pressure in the unnecessary flow control valve 2, unnecessary flow control valve 2 also has drain tap 25, and drain tap 25 is connected with fuel tank.Further in the scheme, drain tap 25 can be connected with fuel tank by overflow valve 3.Can set in advance the threshold values of overflow valve 25, when the oil pressure in the unnecessary flow control valve 2 surpasses the threshold values of overflow valve 25, overflow valve 3 will be opened, and the hydraulic oil in the unnecessary flow control valve 2 will flow in the fuel tank by overflow valve 3.
Below introduce the operating principle of rotary drilling rig minus flow control system provided by the utility model.
Auxilliary valve is not worked, main valve when work, the spool 26 of unnecessary flow control valve 2 is under the pressure effect of the pressure oil of main pump 1 output, be operated in right position, first oil-out 21 of unnecessary flow control valve 2 is communicated with oil-in 23, the oil-out of main pump 1 is communicated with the oil-in of main valve, and main pump 1 is to the main valve fuel feeding; Auxilliary valve work, when main valve is not worked, the load sensing mouth of auxilliary valve sends feedback pressure to the load sensing mouth 24 of unnecessary flow control valve 2, the spool 26 of unnecessary flow control valve 2 is under the effect of this feedback pressure, be operated in position, a left side, second oil-out 22 of unnecessary flow control valve 2 is communicated with oil-in 23, the oil-out of main pump 1 is communicated with the oil-in of auxilliary valve, and main pump 1 is to auxilliary valve fuel feeding.
Below introduce the rotary drilling rig minus flow controlled hydraulic system provided by the utility model effect that possesses skills.
The rotary drilling rig minus flow controlled hydraulic system that the utility model provides under the situation of having only a main pump, both can can realize the minus flow control of rotary drilling rig to auxilliary valve fuel feeding again to the main valve fuel feeding.Like this, on rotary drilling rig, can save an oil pump, make that the space is no longer narrow and small on the chassis of rotary drilling rig, also reduce cost of production simultaneously.
In the preferred version, in the rotary drilling rig maintenance process, for the ease of measuring the oil pressure in the oil circuit, be provided with first pressure tap 27 at first oil-out, 21 places of unnecessary flow control valve 2,22 places are provided with second pressure tap 28 at second oil-out.
The utility model also provides a kind of rotary drilling rig, and this rotary drilling rig has above-mentioned rotary drilling rig minus flow controlled hydraulic system.Because above-mentioned rotary drilling rig minus flow controlled hydraulic system has above-mentioned technique effect, the rotary drilling rig with this rotary drilling rig minus flow controlled hydraulic system also should have the corresponding techniques effect.
The above only is the description of preferred implementation of the present utility model; should be understood that; because the finiteness of literal expression; and objectively have unlimited concrete structure; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (8)
1. a rotary drilling rig minus flow controlled hydraulic system comprises main pump, main valve and auxilliary valve, it is characterized in that also comprise unnecessary flow control valve, this unnecessary flow control valve has oil-in, first oil-out, second oil-out, load sensing mouth and spool; The oil-in of described unnecessary flow control valve is connected with the oil-out of described main pump, described first oil-out is connected with the oil-in of described main valve, described second oil-out is connected with the oil-in of described auxilliary valve, and the load sensing mouth of described unnecessary flow control valve is connected with the load sensing mouth of described auxilliary valve.
2. rotary drilling rig minus flow controlled hydraulic system according to claim 1 is characterized in that, described main valve is a minus flow control banked direction control valves.
3. rotary drilling rig minus flow controlled hydraulic system according to claim 2 is characterized in that described auxilliary valve is the load sensing banked direction control valves.
4. rotary drilling rig minus flow controlled hydraulic system according to claim 3 is characterized in that described unnecessary flow control valve also has drain tap, and described drain tap is connected with fuel tank.
5. rotary drilling rig minus flow controlled hydraulic system according to claim 4 is characterized in that described drain tap is connected with fuel tank by overflow valve.
6. rotary drilling rig minus flow controlled hydraulic system according to claim 5 is characterized in that, the described first oil-out place is provided with first pressure tap.
7. rotary drilling rig minus flow controlled hydraulic system according to claim 5 is characterized in that, the described second oil-out place is provided with second pressure tap.
8. a rotary drilling rig is characterized in that, this rotary drilling rig has each described rotary drilling rig minus flow controlled hydraulic system of claim 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201730839U CN201486462U (en) | 2009-09-08 | 2009-09-08 | Inverted flux control hydraulic system of rotary drilling rig and rotary drilling rig employing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201730839U CN201486462U (en) | 2009-09-08 | 2009-09-08 | Inverted flux control hydraulic system of rotary drilling rig and rotary drilling rig employing same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201486462U true CN201486462U (en) | 2010-05-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201730839U Expired - Fee Related CN201486462U (en) | 2009-09-08 | 2009-09-08 | Inverted flux control hydraulic system of rotary drilling rig and rotary drilling rig employing same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201486462U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536927A (en) * | 2010-11-25 | 2012-07-04 | 林德材料控股有限责任公司 | Load-sensing regulating type hydrostatic drive system |
-
2009
- 2009-09-08 CN CN2009201730839U patent/CN201486462U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536927A (en) * | 2010-11-25 | 2012-07-04 | 林德材料控股有限责任公司 | Load-sensing regulating type hydrostatic drive 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 |
Granted publication date: 20100526 Termination date: 20150908 |
|
| EXPY | Termination of patent right or utility model |