CN202202805U - Rotary drilling rig and pressurizing device thereof - Google Patents
Rotary drilling rig and pressurizing device thereof Download PDFInfo
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- CN202202805U CN202202805U CN2011203254872U CN201120325487U CN202202805U CN 202202805 U CN202202805 U CN 202202805U CN 2011203254872 U CN2011203254872 U CN 2011203254872U CN 201120325487 U CN201120325487 U CN 201120325487U CN 202202805 U CN202202805 U CN 202202805U
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- pressure device
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Abstract
The utility model discloses a pressurizing device for a rotary drilling rig, which comprises a pressurization executing element (1), an overflow valve (2) used for adjusting the pressure difference of the two ends of the pressurization executing element (1), a potentiometer (3), and a control part (4) for adjusting the overflow pressure of the overflow valve (2) according to the size of a current output by the potentiometer (3), wherein the potentiometer (3) and the overflow valve (2) are both connected with the control part (4); and the overflow valve (2) is arranged on an oil return line of the pressurization executing element (1). By adopting the pressurizing device, electrodeless adjustment of the drilling pressure of a drilling rod can be realized in the pressurization process; and in addition, the pressurizing device has the advantages of simple structure, small volume and lower cost. The utility model also discloses the rotary drilling rig comprising the pressurizing device, which has the same technical effects.
Description
Technical field
The utility model relates to technical field of engineering machinery, relates in particular to a kind of plus-pressure device that is used for rotary drilling rig, and the rotary drilling rig that comprises above-mentioned plus-pressure device.
Background technology
Rotary drilling rig is the construction machinery of pore-forming operation in a kind of suitable building foundation engineering, mainly is applicable to soil layer constructions such as sand, cohesive soil, slity soil, in multiple foundation basic constructions such as castinplace pile, diaphragm wall, underpin, is used widely.
Rotary drilling rig construction is the rotation that utilizes drilling rod and drilling bucket, as drilling pressure, the soil bits is filled promote drilling bucket behind the drilling bucket unearthed with drilling bucket deadweight and plus-pressure.Rotation, shoveling through drilling bucket, promote, unload soil and mud displacement retaining wall, repeatedly circulation and pore-forming.In drilling process, need unit head that drilling rod is applied axial compression, and axial pressure motion at a slow speed; In the unit head lifting process,, require the unit head can the rapid axial lifter motion in order to improve efficiency of construction.This can regulate the size of its output pressure according to the duty of drill bit with regard to needing the plus-pressure device.
In the prior art, main hydraulic circuit and auxilliary hydraulic circuit that the plus-pressure device generally includes the pressurization executive component, connects side by side, and switching part, main hydraulic circuit, auxilliary hydraulic circuit include hydraulic pump, overflow valve, reversal valve.In drilling process, need apply bigger pressure to drilling rod, the operation switching part makes the pressurization executive component be connected with main hydraulic circuit, and the oil pressure relief that promptly passes through the overflow valve of main hydraulic circuit is controlled the output pressure of pressurization executive component; In the drilling rod lifting process, the operation switching part makes the pressurization executive component be connected with auxilliary hydraulic circuit, and the oil pressure relief that promptly passes through the overflow valve of auxilliary hydraulic circuit is controlled the output pressure of pressurization executive component.
Realized the function that the height double speed of plus-pressure device is regulated through said structure, plus-pressure is big when having realized rod boring, plus-pressure is less when promoting.Yet, because the oil pressure relief of the overflow valve of the overflow valve of main hydraulic circuit, auxilliary hydraulic circuit is certain, make that the pressure adjusting classification of plus-pressure device is limited, cause adjusting underaction to rod boring pressure; In addition, the component of above-mentioned plus-pressure device are more, and the structure more complicated causes the volume of plus-pressure device bigger, and cost of production is higher.
In view of this, demand urgently to above-mentioned technical problem, the structure of the plus-pressure device of existing rotary drilling rig be optimized design, make it can realize electrodeless adjusting rod boring pressure, and have simple in structure, volume is little, lower-cost advantage.
The utility model content
The technical problem that the utility model will solve is that a kind of plus-pressure device that is used for rotary drilling rig is provided; Make it can in pressure process, realize electrodeless adjusting to rod boring pressure; And that this plus-pressure device has is simple in structure, volume is little, lower-cost advantage.Another technical problem that the utility model will solve is that a kind of rotary drilling rig that comprises above-mentioned plus-pressure device is provided.
For solving the problems of the technologies described above, the utility model provides a kind of plus-pressure device that is used for rotary drilling rig, comprises the pressurization executive component and is used to regulate the overflow valve of the pressure at two ends difference of said pressurization executive component; Also comprise potentiometer and according to the control assembly of the oil pressure relief of the said overflow valve of said potentiometer output current size adjustment; Said potentiometer, said overflow valve all are connected with said control assembly, and said overflow valve is located on the oil return line of said pressurization executive component.
Preferably; Said overflow valve is a precursor overflow valve; Said control assembly is an electro-hydraulic proportional reducing valve, and guide's control port of said precursor overflow valve is communicated with the actuator port of said electro-hydraulic proportional reducing valve, and the oil-in of said electro-hydraulic proportional reducing valve is communicated with guide's oil sources.
Preferably, said pressurization executive component is a hydraulic motor.
Preferably, said potentiometer is the knob potentiometer.
Preferably, also comprise multiple directional control valve, the both sides hydraulic fluid port of said hydraulic motor is communicated with oil-in, oil return opening through said multiple directional control valve.
Preferably, said overflow valve is a long distance electric control overflow valve, and said control assembly is a controller.
Preferably, said pressurization executive component is a hydraulic cylinder.
Preferably, said potentiometer is the rectilinearly-moved slide type potentiometer.
The plus-pressure device that is used for rotary drilling rig that the utility model provided, it comprises pressurization executive component, overflow valve, also comprises potentiometer and according to the control assembly of the oil pressure relief of potentiometer output current size adjustment overflow valve; Potentiometer, overflow valve all are connected with control assembly, and overflow valve is located on the oil return line of pressurization executive component.
Adopt this structure, in the plus-pressure device busy process of above-mentioned rotary drilling rig, the pressurization executive component provides drilling pressure to drilling rod; At this moment; Under the constant situation of other conditions, if through the brush of migration potential device the output current of potentiometer is changed, then control assembly is regulated the oil pressure relief of overflow valve according to the variation of potentiometer output current; Thereby change the oil return line pressure of pressurization executive component; Under the constant situation of its in-line pressure, the pressure at two ends difference of the executive component that then pressurizes obtains changing, thereby has regulated the drilling pressure of supplying with to drilling rod.
Can draw by the above-mentioned course of work; This plus-pressure device is formed through potentiometer, control assembly and overflow valve and is added pressure regulator; Simple operations through to potentiometer can realize the adjusting to rod boring pressure, because potentiometer is made up of resistive element and brush movably usually, through the mobile electrodeless variation that can realize electric current of brush; Thereby can realize the oil pressure relief of overflow valve is carried out electrodeless adjusting, thereby can realize electrodeless adjusting to the drilling pressure of drilling rod.The above-mentioned pressure regulator that adds only comprises potentiometer, control assembly and overflow valve, and this makes above-mentioned plus-pressure device also have simple in structure, control convenience, and the advantage that volume is little, cost of production is not high.
The utility model also provides a kind of rotary drilling rig, comprises mast and drilling rod; Also comprise aforesaid plus-pressure device, said plus-pressure device is installed on the said mast.
Because above-mentioned plus-pressure device has above-mentioned technique effect, therefore, comprises that the rotary drilling rig of this plus-pressure device also should have identical technique effect, repeats no more at this.
Description of drawings
Fig. 1 is the structural representation of first kind of specific embodiment of the plus-pressure device that is used for rotary drilling rig that the utility model provided;
Fig. 2 is the structural representation of second kind of specific embodiment of the plus-pressure device that is used for rotary drilling rig that the utility model provided;
Fig. 3 is the structural representation of the third specific embodiment of the plus-pressure device that is used for rotary drilling rig that the utility model provided;
Fig. 4 is the structural representation of the 4th kind of specific embodiment of the plus-pressure device that is used for rotary drilling rig that the utility model provided;
Component names and the corresponding relation between the Reference numeral among Fig. 1 to Fig. 4 are:
Pressurization executive component 1; Overflow valve 2; Potentiometer 3; Control assembly 4; Multiple directional control valve 5.
The specific embodiment
The core of the utility model is that a kind of plus-pressure device that is used for rotary drilling rig is provided, and it can realize the electrodeless adjusting to rod boring pressure in pressure process, and this plus-pressure device have simple in structure, volume is little, lower-cost advantage.Another core of the utility model is that a kind of rotary drilling rig that comprises above-mentioned plus-pressure device is provided.
In order to make those skilled in the art understand the technical scheme of the utility model better, the utility model is done further to specify below in conjunction with accompanying drawing and specific embodiment.
Please refer to Fig. 1, Fig. 1 is the structural representation of first kind of specific embodiment of the plus-pressure device that is used for rotary drilling rig that the utility model provided.
In a kind of specific embodiment, as shown in Figure 1, the plus-pressure device that is used for rotary drilling rig that the utility model provided, it mainly comprises pressurization executive component 1, overflow valve 2, potentiometer 3 and control assembly 4; Pressurization executive component 1 is the parts that the drilling pressure of plus-pressure device output are directly passed to drilling rod; Overflow valve 2 is connected on the oil return line of pressurization executive component 1; Regulate the pressure differential at pressurization executive component 1 two ends through the oil pressure relief of himself; Potentiometer 3 is the parts that change output current through change self-resistance size, and control assembly 4 is the parts according to the oil pressure relief of potentiometer 3 output current size adjustment overflow valves 2; Above-mentioned potentiometer 3, overflow valve 2 all are connected with control assembly 4.
Adopt this structure, in the plus-pressure device busy process of above-mentioned rotary drilling rig, pressurization executive component 1 provides drilling pressure to drilling rod; At this moment; Under the constant situation of other conditions, if through the brush of migration potential device 3 output current of potentiometer 3 is changed, then control assembly 4 is regulated the oil pressure relief of overflow valve 2 according to the variation of potentiometer 3 output currents; Thereby change the oil return line pressure of pressurization executive component 1; Under the constant situation of its in-line pressure, the pressure at two ends difference of the executive component 1 that then pressurizes obtains changing, thereby has regulated the drilling pressure of supplying with to drilling rod.
Can draw by the above-mentioned course of work; This plus-pressure device is formed through potentiometer 3, control assembly 4 and overflow valve 2 and is added pressure regulator; Simple operations through to potentiometer 3 can realize the adjusting to rod boring pressure, because potentiometer 3 is made up of resistive element and brush movably usually, through the mobile electrodeless variation that can realize electric current of brush; Thereby can realize the oil pressure relief of overflow valve 2 is carried out electrodeless adjusting, thereby can realize electrodeless adjusting to the drilling pressure of drilling rod.The above-mentioned pressure regulator that adds only comprises potentiometer 3, control assembly 4 and overflow valve 2, and this makes above-mentioned plus-pressure device also have simple in structure, control convenience, and the advantage that volume is little, cost of production is not high.
Need to prove; Specifically do not limit the type of potentiometer 3 in the above-mentioned specific embodiment; Do not limit the specific constructive form of control assembly 4, overflow valve 2 yet, in fact, every potentiometer 3, control assembly 4 and overflow valve 2 of comprising; Play the plus-pressure device of the drilling pressure of electrodeless adjusting drilling rod, all should work as in the protection domain that belongs to the utility model.
The specific constructive form of above-mentioned control assembly 4, overflow valve 2 can also further be set.
Please refer to Fig. 1 and Fig. 2, Fig. 2 is the structural representation of second kind of specific embodiment of the plus-pressure device that is used for rotary drilling rig that the utility model provided.
In the another kind of specific embodiment; As depicted in figs. 1 and 2; Above-mentioned overflow valve 2 can be precursor overflow valve; Control assembly 4 is an electro-hydraulic proportional reducing valve, and guide's control port of precursor overflow valve 2 is communicated with the actuator port of electro-hydraulic proportional reducing valve, and the oil-in of electro-hydraulic proportional reducing valve is communicated with guide's oil sources.
Adopt said structure, under the constant situation of other conditions, if the output current of potentiometer 3 is increased through the brush of migration potential device 3; If electro-hydraulic proportional reducing valve is the direct proportion reducing valve; The then also corresponding increase of the controlled pressure of electro-hydraulic proportional reducing valve, thus the valve core opening pressure of precursor overflow valve also increases, and promptly the oil pressure relief of precursor overflow valve increases; Thereby the pressure at two ends that changes the pressurized control element is poor, plays the effect of the drilling pressure of electrodeless adjusting drilling rod.
This shows, adopt above-mentioned electro-hydraulic proportional reducing valve and pilot relief valve can realize the function of electrodeless adjusting, and hydraulic control has, and transmission of power is reliable, the characteristics stably of moving.
Certainly, above-mentioned control assembly 4 and overflow valve 2 are not limited in the form of structure of hydraulic control, please refer to Fig. 3 and Fig. 4, and Fig. 3 is the structural representation of the third specific embodiment of the plus-pressure device that is used for rotary drilling rig that the utility model provided; Fig. 4 is the structural representation of the 4th kind of specific embodiment of the plus-pressure device that is used for rotary drilling rig that the utility model provided; Like Fig. 3 and shown in Figure 4, above-mentioned overflow valve 2 can also be controlled overflow valve 2 for long distance electric, and control assembly 4 is a controller.
Adopt this form of structure; If send first control signal through control potentiometer 3; Controller is exported second control signal according to this first control signal to long distance electric control overflow valve, thereby changes the oil pressure relief of long distance electric control overflow valve, reaches and regulates stressed purpose.
The concrete structure of pressurization executive component 1 in the above-mentioned plus-pressure device can also further be set.
In the another kind of specific embodiment, like Fig. 1 and Fig. 3, above-mentioned pressurization executive component 1 can be hydraulic motor, can realize the plus-pressure of plus-pressure device is passed to drilling rod; Certainly, like Fig. 2 and shown in Figure 4, above-mentioned pressurization executive component 1 can also be miscellaneous parts such as hydraulic cylinder.
The concrete structure of potentiometer 3 in the above-mentioned plus-pressure device can also further be set.
In the another kind of specific embodiment, as shown in the figure, above-mentioned potentiometer 3 can be specially the knob potentiometer, like this, can realize the adjusting to potentiometer 3 resistance easily through turning knob, thereby changes the output current of potentiometer 3; Certainly, above-mentioned potentiometer 3 can also adopt other types, for example can also adopt the rectilinearly-moved slide type potentiometer, can realize that through the straight reciprocating motion of manual operation brush potentiometer 3 resistance change like this.
In scheme more specifically, above-mentioned plus-pressure device can also comprise multiple directional control valve 5, and the both sides hydraulic fluid port of hydraulic motor is communicated with oil-in, oil return opening through multiple directional control valve 5.
Adopt this structure, as shown in the figure, through switching the different paths of multiple directional control valve 5, can change the in-line and the oil return line of pressurization executive component 1, this makes that the control of plus-pressure device is more flexible.
The utility model also provides a kind of rotary drilling rig, comprises mast and drilling rod; Also comprise plus-pressure device as above, the plus-pressure device is installed on the mast.
Because above-mentioned plus-pressure device has above-mentioned technique effect, therefore, comprises that the rotary drilling rig of this plus-pressure device also has the corresponding techniques effect, repeats no more at this.
More than a kind of rotary drilling rig and plus-pressure device thereof that the utility model provided have been carried out detailed introduction.Used concrete example among this paper the principle and the embodiment of the utility model are set forth, the explanation of above embodiment just is used to help to understand the method and the core concept thereof of the utility model.Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (9)
1. a plus-pressure device that is used for rotary drilling rig comprises pressurization executive component (1) and is used to regulate the overflow valve (2) of the pressure at two ends difference of said pressurization executive component (1); It is characterized in that, also comprise potentiometer (3) and according to the control assembly (4) of the oil pressure relief of the said overflow valve of said potentiometer (3) output current size adjustment (2); Said potentiometer (3), said overflow valve (2) all are connected with said control assembly (4), and said overflow valve (2) is located on the oil return line of said pressurization executive component (1).
2. the plus-pressure device that is used for rotary drilling rig according to claim 1; It is characterized in that; Said overflow valve (2) is a precursor overflow valve; Said control assembly (4) is an electro-hydraulic proportional reducing valve, and guide's control port of said precursor overflow valve (2) is communicated with the actuator port of said electro-hydraulic proportional reducing valve, and the oil-in of said electro-hydraulic proportional reducing valve is communicated with guide's oil sources.
3. the plus-pressure device that is used for rotary drilling rig according to claim 2 is characterized in that said pressurization executive component (1) is a hydraulic motor.
4. the plus-pressure device that is used for rotary drilling rig according to claim 3 is characterized in that, said potentiometer (3) is knob potentiometer (3).
5. the plus-pressure device that is used for rotary drilling rig according to claim 4 is characterized in that, also comprises multiple directional control valve (5), and the both sides hydraulic fluid port of said hydraulic motor is communicated with oil-in, oil return opening through said multiple directional control valve (5).
6. the plus-pressure device that is used for rotary drilling rig according to claim 1 is characterized in that, said overflow valve (2) is long distance electric control overflow valve, and said control assembly (4) is a controller.
7. the plus-pressure device that is used for rotary drilling rig according to claim 1 is characterized in that said pressurization executive component (1) is a hydraulic cylinder.
8. the plus-pressure device that is used for rotary drilling rig according to claim 1 is characterized in that said potentiometer (3) is the rectilinearly-moved slide type potentiometer.
9. a rotary drilling rig comprises mast and drilling rod; It is characterized in that also comprise each described plus-pressure device like claim 1-8, said plus-pressure device is installed on the said mast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203254872U CN202202805U (en) | 2011-08-31 | 2011-08-31 | Rotary drilling rig and pressurizing device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203254872U CN202202805U (en) | 2011-08-31 | 2011-08-31 | Rotary drilling rig and pressurizing device thereof |
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| Publication Number | Publication Date |
|---|---|
| CN202202805U true CN202202805U (en) | 2012-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203254872U Expired - Lifetime CN202202805U (en) | 2011-08-31 | 2011-08-31 | Rotary drilling rig and pressurizing device thereof |
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| Country | Link |
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| CN (1) | CN202202805U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926655A (en) * | 2012-11-22 | 2013-02-13 | 上海中联重科桩工机械有限公司 | Control method and control device of rotary drilling rig and rotary drilling rig |
| CN104564883A (en) * | 2014-12-31 | 2015-04-29 | 北京市三一重机有限公司 | Pressurizing circuit, assisting hydraulic circuit and rotary drilling rig hydraulic system and rotary drilling rig |
| CN112727435A (en) * | 2020-12-31 | 2021-04-30 | 恒天九五重工有限公司 | Intelligent rock entering control device and method for rotary drilling rig |
-
2011
- 2011-08-31 CN CN2011203254872U patent/CN202202805U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926655A (en) * | 2012-11-22 | 2013-02-13 | 上海中联重科桩工机械有限公司 | Control method and control device of rotary drilling rig and rotary drilling rig |
| CN102926655B (en) * | 2012-11-22 | 2016-03-02 | 上海中联重科桩工机械有限公司 | Control method and control device of rotary drilling rig and rotary drilling rig |
| CN104564883A (en) * | 2014-12-31 | 2015-04-29 | 北京市三一重机有限公司 | Pressurizing circuit, assisting hydraulic circuit and rotary drilling rig hydraulic system and rotary drilling rig |
| CN104564883B (en) * | 2014-12-31 | 2016-08-24 | 北京市三一重机有限公司 | Pressurizing loop, auxiliary circuit, rotary drilling rig hydraulic system and rotary drilling rig |
| CN112727435A (en) * | 2020-12-31 | 2021-04-30 | 恒天九五重工有限公司 | Intelligent rock entering control device and method for rotary drilling rig |
| CN112727435B (en) * | 2020-12-31 | 2023-09-01 | 恒天九五重工有限公司 | Intelligent rock entering control device and method for rotary drilling rig |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120425 |