CN203702705U - Automatic drilling hydraulic control system and work vehicle - Google Patents
Automatic drilling hydraulic control system and work vehicle Download PDFInfo
- Publication number
- CN203702705U CN203702705U CN201420045818.0U CN201420045818U CN203702705U CN 203702705 U CN203702705 U CN 203702705U CN 201420045818 U CN201420045818 U CN 201420045818U CN 203702705 U CN203702705 U CN 203702705U
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- Prior art keywords
- pressure
- valve
- load sensitive
- communicated
- compensation valve
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Abstract
Provided are an automatic drilling hydraulic control system and a work vehicle. The automatic drilling hydraulic control system comprises a first pressure sensor (1), a variable-amplitude oil cylinder (2), a balance valve (3), an electric proportional overflow valve (4), a second pressure sensor (5), a hydraulic motor (6), a hydraulic pump (7), load sensitive pressure-compensated valves (8 and 9), a controller and an angle detector. The angle detector is used for detecting a pitch angle of a cantilever; the pressure sensors are used for detecting pressure of a rodless cavity and a rod cavity of the variable-amplitude oil cylinder (2); detected state data are input into the controller; the controller is used for calculating current drilling pressure and the buried depth of a drilling rod, comparing preset drilling pressure corresponding to the buried depth and the current drilling pressure, and sending a control command of the electric proportional overflow valve (4) to the controller according to comparison results; the electric proportional overflow valve (4) is operated according to the control command so that the current drilling pressure can be equal to the preset drilling pressure corresponding to the buried depth.
Description
Technical field
The utility model relates to a kind of operating vehicle, relates in particular to a kind of automatic drill feed liquor pressure control system of operating vehicle, also relates to a kind of operating vehicle.
Background technique
CN202594665U discloses a kind of Multifunction machineshop truck, has the function of transport, lifting and boring.As shown in Figure 1, the drilling rod that the realization of drilling function mainly comprises and drill bit, the oil hydraulic motor 6 of driving drilling rod and bit, connecting plate, push cylinder and amplitude oil cylinder 2.The angle on position, drilling rod and the ground of drilling rod regulates to be determined by the amplitude oil cylinder 2 of the push cylinder on cantilever and cantilever and the putting position of operating vehicle.And the pressure creeping into is mainly determined by amplitude oil cylinder 2.When this operating vehicle holes at present, control the lower brill of rig by the push cylinder on amplitude oil cylinder 2 and the cantilever of manual operation cantilever.While boring under manual operation control drilling rod, inevitably bring following drawback: while instantly boring excessive velocities, easily cause system overload, cause system energy loss, excess Temperature, part of damage; Instantly drilling speed is spent slowly, causes efficiency of construction low; The intermittence of manual operation control, the reduction that also tends to bring working efficiency, unstability increases; The factors such as artificial error in judgement or operation delay, cause operation mechanism to damage, and have increased operator's labor intensity.
Model utility content
Therefore, the purpose of this utility model is: a kind of automatic drill feed liquor pressure control system and controlling method thereof of operating vehicle are provided, can accurately regulate in real time lower the pressure of the drill power of operating vehicle, improve the working life of work efficiency and operating vehicle.
In order to solve the problems of the technologies described above, the utility model provides a kind of automatic drill feed liquor pressure control system, at least has the first pressure transducer; Amplitude oil cylinder; Equilibrium valve; Electricity proportional pressure control valve; The second pressure transducer; Drive the oil hydraulic motor of drilling rod rotation; Oil hydraulic pump; The first load sensitive pressure compensation valve; The second load sensitive pressure compensation valve; Controller; The angle detector that detects cantilever luffing angle, the oil outlet of described oil hydraulic pump is communicated with the filler opening of the first load sensitive pressure compensation valve, the second load sensitive pressure compensation valve; The first actuator port of the first load sensitive pressure compensation valve is communicated with the first actuator port of described oil hydraulic motor, and the second actuator port is communicated with the second actuator port of described oil hydraulic motor, and return opening is communicated with return tube; The first actuator port of the second load sensitive pressure compensation valve is communicated with the pressure hydraulic fluid port of the rod chamber of described amplitude oil cylinder, electric proportional pressure control valve and the control port of described equilibrium valve, the second actuator port is communicated with the filler opening of equilibrium valve, and return opening is communicated with return tube; The oil outlet of described equilibrium valve is communicated with the rodless cavity of described amplitude oil cylinder; Described the first pressure transducer is for detection of the pressure of amplitude oil cylinder rodless cavity; Described the second pressure transducer is for detection of the pressure of amplitude oil cylinder rod chamber; Described the first pressure transducer, the second pressure transducer, electric proportional pressure control valve and angle detector are electrically connected with described controller.
As further improvement of the utility model scheme: described automatic drill feed liquor pressure control system, also there is relief valve, the filler opening of described relief valve is communicated with described hydraulic pressure delivery side of pump, and the oil outlet of relief valve is communicated with return tube.
As further improvement of the utility model scheme: described automatic drill feed liquor pressure control system, also there is the 3rd pressure transducer, the 3rd pressure transducer is for detection of the filler opening hydraulic fluid pressure of the first load sensitive pressure compensation valve and the second load sensitive pressure compensation valve, and the 3rd pressure transducer, the first load sensitive pressure compensation valve and the second load sensitive pressure compensation valve are electrically connected with described controller.
In the situation that not conflicting, above-mentioned improvement project can be implemented alone or in combination.
In order to solve the problems of the technologies described above, the operating vehicle that the utility model provides is the operating vehicle that comprises above-described automatic drill feed liquor pressure control system.
The beneficial effects of the utility model: avoid, because of factors such as artificial error in judgement or operation delay, causing operation mechanism to damage, provide working efficiency more than 30%, the heating of minimizing system and people's labor intensity.
Brief description of the drawings
Accompanying drawing is used to provide further understanding of the present utility model, forms the application's a part, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
The wellbore part mechanical part structural representation of Tu1Shi operating vehicle;
Fig. 2 is the schematic diagram of automatic drill feed liquor pressure control system.
Embodiment
Below in conjunction with accompanying drawing, describe the utility model automatic drill feed liquor pressure control system in detail and use the embodiment of the operating vehicle of this control system.
Operating vehicle's automatic drill feed liquor pressure control system is as shown in Figure 1 and Figure 2 implemented illustration, and described automatic drill feed liquor pressure control system has the first pressure transducer 1; Amplitude oil cylinder 2; Equilibrium valve 3; Electricity proportional pressure control valve 4; The second pressure transducer 5; Drive the oil hydraulic motor 6 of drilling rod rotation; Oil hydraulic pump 7; The first load sensitive pressure compensation valve 8; The second load sensitive pressure compensation valve 9; Relief valve 10; The 3rd pressure transducer 11; Controller; Detect the angle detector of cantilever luffing angle.
The oil outlet of described oil hydraulic pump 7 is communicated with the filler opening of the first load sensitive pressure compensation valve 8, the second load sensitive pressure compensation valve 9; The first actuator port of the first load sensitive pressure compensation valve 8 is communicated with the first actuator port of described oil hydraulic motor 6, and the second actuator port is communicated with the second actuator port of described oil hydraulic motor 6, and return opening is communicated with return tube; The first actuator port of the second load sensitive pressure compensation valve 9 is communicated with the pressure hydraulic fluid port of the rod chamber of described amplitude oil cylinder 2, electric proportional pressure control valve 4 and the control port of described equilibrium valve 3, the second actuator port is communicated with the filler opening of equilibrium valve 3, and return opening is communicated with return tube; The oil outlet of described equilibrium valve 3 is communicated with the rodless cavity of described amplitude oil cylinder 2; The filler opening of described relief valve 10 is communicated with the outlet of oil hydraulic pump 7; Oil outlet is communicated with return tube; Described the first pressure transducer 1 is for detection of the pressure of amplitude oil cylinder 2 rodless cavities; Described the second pressure transducer 5 is for detection of the pressure of amplitude oil cylinder 2 rod chambers; The 3rd pressure transducer 11 is for detection of the filler opening hydraulic fluid pressure of the first load sensitive pressure compensation valve 8 and the second load sensitive pressure compensation valve 9; Described the first pressure transducer 1, the second pressure transducer 5, the 3rd pressure transducer 11, electric proportional pressure control valve 4, the first load sensitive pressure compensation valve 8, the second load sensitive pressure compensation valve 9, angle detector are electrically connected with described controller.
Below in conjunction with Fig. 1, Fig. 2, the working principle of operating vehicle's automatic drill feed liquor pressure control system is elaborated:
In the time that the first load sensitive pressure compensation valve 8 moves and be positioned at right position, the pressure oil of oil hydraulic pump 7 is by the first load sensitive pressure compensation valve 8, to the first actuator port of oil hydraulic motor 6, through the second actuator port of oil hydraulic motor 6, the rear oil return of the first load sensitive pressure compensation valve 8, promotes oil hydraulic motor 6 and does work.Meanwhile, when the second load sensitive pressure compensation valve 9 moves and is positioned at left position, the pressure oil of oil hydraulic pump 7 enters in the rod chamber of amplitude oil cylinder 2 by the second load sensitive pressure compensation valve 9, pressure oil enters into equilibrium valve 3 pilot control opening simultaneously, open equilibrium valve 3, the oil return of the rodless cavity of amplitude oil cylinder 2 is got back to fuel tank by equilibrium valve 3 and the second load sensitive pressure compensation valve 9, thereby realizes pressing down of operating vehicle's cantilever, brings downward pressure to drilling rod.When the second load sensitive pressure compensation valve 9 moves and is positioned at right position, the pressure oil of oil hydraulic pump 7 enters in the rodless cavity of amplitude oil cylinder 2 by the second load sensitive pressure compensation valve 9, equilibrium valve 3, the oil return of the rod chamber of amplitude oil cylinder 2 is got back to fuel tank by the second load sensitive pressure compensation valve 9, thereby realizes the lifting of operating vehicle's cantilever.
In operation process, utilize angle detector to detect cantilever luffing angle; The first pressure transducer 1 detects the pressure of amplitude oil cylinder 2 rodless cavities; The second pressure transducer 5 detects the pressure of amplitude oil cylinder 2 rod chambers; The 3rd pressure transducer 11 detects the pressure oil inlet pressure of the first load sensitive pressure compensation valve 8 and the second load sensitive pressure compensation valve 9;
The jib luffing angle status data that angle detector detects; The pressure state data input controller that the first pressure transducer 1, the second pressure transducer 5, the 3rd pressure transducer 11 detect;
The decoding data that described controller detects the first pressure transducer 1, the second pressure transducer 5 also calculates current drilling pressure; The decoding data that controller detects described angle detector also calculates the embedded depth of drilling rod; Controller compares drilling pressure corresponding default embedded depth and current drilling pressure, and sends the control command to described electric proportional pressure control valve 4 according to comparative result to described controller; Described controller operates described electric proportional pressure control valve 4 according to the control command receiving, and the drilling pressure that current drilling pressure is corresponding with default embedded depth is equated.
The embedded depth of drilling rod calculates by calculating formula h=l-L × sin α-H.In formula:
H is the embedded depth mm of drilling rod
L is the distance mm of cantilever root hinge to cantilever top link hinge
L is the distance mm of cantilever top link hinge to drilling rod root
H is the distance mm of cantilever root hinge to ground
H is drilling rod embedded depth mm
α is the luffing angle of cantilever.
Drilling pressure calculates by following calculating formula:
F=（G×L2+（P1×S1－P2×S2）×L1）/L3
In formula:
F is the power N acting on drilling rod
G is the gravity N of cantilever assembly and drilling rod assembly
P1 is the pressure MPa that the second pressure transducer 5 detects amplitude oil cylinder 2 rod chambers
P2 is the pressure MPa that the first pressure transducer 1 detects amplitude oil cylinder 2 rodless cavities
S1 is the area mm2 of amplitude oil cylinder rod chamber
S2 is the area mm2 of amplitude oil cylinder rodless cavity
L 1 is the arm of force mm of cantilever root hinge to amplitude oil cylinder
L 2 is the arm of force mm of cantilever root hinge to the gravity of cantilever assembly and drilling rod assembly
L 3 is the arm of force mm of cantilever root hinge to drilling rod.
Decoding data and setup pressure value that described controller detects the 3rd pressure transducer 11 compare, and send the control command to described the first load sensitive pressure compensation valve 8 and the second load sensitive pressure compensation valve 9 according to comparative result to described controller; Described controller operates the spool aperture of described the first load sensitive pressure compensation valve 8 and the second load sensitive pressure compensation valve 9 according to the control command receiving, make the rotating speed of drilling rod and the feed speed of amplitude oil cylinder 2 in range of set value.
Obviously, the utility model is not limited to above preferred implementation, also can be in the spirit of the utility model claim and specification restriction, carry out conversion and the improvement of various ways, can solve same technical problem, and obtain the technique effect of expection, therefore do not repeat.Those of ordinary skill in the art can be from the disclosed content of the utility model directly or all schemes of associating, as long as within the spirit limiting in claim, also belong to protection domain of the present utility model.
Claims (4)
1. an automatic drill feed liquor pressure control system, at least has the first pressure transducer (1); Amplitude oil cylinder (2); Equilibrium valve (3); Electricity proportional pressure control valve (4); The second pressure transducer (5); Drive the oil hydraulic motor (6) of drilling rod rotation; Oil hydraulic pump (7); The first load sensitive pressure compensation valve (8); The second load sensitive pressure compensation valve (9); Controller; The angle detector that detects cantilever luffing angle, is characterized in that, the oil outlet of described oil hydraulic pump (7) is communicated with the filler opening of the first load sensitive pressure compensation valve (8), the second load sensitive pressure compensation valve (9); The first actuator port of the first load sensitive pressure compensation valve (8) is communicated with the first actuator port of described oil hydraulic motor (6), and the second actuator port is communicated with the second actuator port of described oil hydraulic motor (6), and return opening is communicated with return tube; The pressure hydraulic fluid port of second the first actuator port of load sensitive pressure compensation valve (9) and the rod chamber of described amplitude oil cylinder (2), electric proportional pressure control valve (4) and the control port of described equilibrium valve (3) are communicated with, the second actuator port is communicated with the filler opening of equilibrium valve (3), and return opening is communicated with return tube; The oil outlet of described equilibrium valve (3) is communicated with the rodless cavity of described amplitude oil cylinder (2); Described the first pressure transducer (1) is for detection of the pressure of amplitude oil cylinder (2) rodless cavity; Described the second pressure transducer (5) is for detection of the pressure of amplitude oil cylinder (2) rod chamber; Described the first pressure transducer (1), the second pressure transducer (5), electric proportional pressure control valve (4) and angle detector are electrically connected with described controller.
2. automatic drill feed liquor pressure control system according to claim 1, is characterized in that, also has relief valve (10), and the filler opening of described relief valve (10) is communicated with the outlet of described oil hydraulic pump (7), and the oil outlet of relief valve (10) is communicated with return tube.
3. automatic drill feed liquor pressure control system according to claim 1, it is characterized in that, also there is the 3rd pressure transducer (11), the 3rd pressure transducer (11) is for detection of the filler opening hydraulic fluid pressure of the first load sensitive pressure compensation valve (8) and the second load sensitive pressure compensation valve (9), and the 3rd pressure transducer (11), the first load sensitive pressure compensation valve (8) and the second load sensitive pressure compensation valve (9) are electrically connected with described controller.
4. an operating vehicle, is characterized in that, this operating vehicle comprises the automatic drill feed liquor pressure control system described in claim 1～3 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420045818.0U CN203702705U (en) | 2014-01-24 | 2014-01-24 | Automatic drilling hydraulic control system and work vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420045818.0U CN203702705U (en) | 2014-01-24 | 2014-01-24 | Automatic drilling hydraulic control system and work vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203702705U true CN203702705U (en) | 2014-07-09 |
Family
ID=51053156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420045818.0U Withdrawn - After Issue CN203702705U (en) | 2014-01-24 | 2014-01-24 | Automatic drilling hydraulic control system and work vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203702705U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758801A (en) * | 2014-01-24 | 2014-04-30 | 长沙金阳机械设备科技开发有限公司 | Automatic drilling hydraulic control system, control method and work vehicle |
| CN104986675A (en) * | 2015-07-02 | 2015-10-21 | 浙江三一装备有限公司 | Boom variable-amplitude hydraulic system and crane |
-
2014
- 2014-01-24 CN CN201420045818.0U patent/CN203702705U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758801A (en) * | 2014-01-24 | 2014-04-30 | 长沙金阳机械设备科技开发有限公司 | Automatic drilling hydraulic control system, control method and work vehicle |
| CN103758801B (en) * | 2014-01-24 | 2015-12-16 | 长沙金阳机械设备科技开发有限公司 | A kind of automatic drill feed liquor pressure control system, controlling method and operating vehicle |
| CN104986675A (en) * | 2015-07-02 | 2015-10-21 | 浙江三一装备有限公司 | Boom variable-amplitude hydraulic system and crane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140709 Effective date of abandoning: 20151216 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |