CN214888031U - Soil throwing system of power head of rotary drilling rig - Google Patents
Soil throwing system of power head of rotary drilling rig Download PDFInfo
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- CN214888031U CN214888031U CN202121232992.2U CN202121232992U CN214888031U CN 214888031 U CN214888031 U CN 214888031U CN 202121232992 U CN202121232992 U CN 202121232992U CN 214888031 U CN214888031 U CN 214888031U
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Abstract
The utility model discloses a dig native system of getting rid of rig unit head soon. The soil throwing system comprises a hydraulic pump, a power head motor, a main control valve, a pilot control valve group and a pump displacement control valve, wherein the pump displacement control valve is provided with a first oil port, a second oil port and a third oil port, the first oil port is connected with a feedback port of the hydraulic pump, the second oil port is connected with an oil outlet of the hydraulic pump, the third oil port is connected with a reversing valve, and when the power head motor is in a soil throwing mode, the first oil port and the second oil port of the pump displacement control valve are communicated so that the hydraulic pump works in full displacement. When the power head motor is in the mode of throwing soil, the first oil port and the second oil port of the pump displacement control valve are communicated, so that the oil pressure of the oil outlet of the hydraulic pump directly acts on the feedback port of the hydraulic pump, the hydraulic pump works at full displacement, the responsiveness of throwing soil of the power head and the soil throwing efficiency are improved, and the working efficiency of the rotary drilling rig is improved.
Description
Technical Field
The utility model relates to a dig native system of getting rid of rig unit head soon.
Background
The rotary drilling rig is large-scale piling equipment suitable for hole forming operation of foundation construction engineering, and construction requirements of different pile diameters and different geology can be met by configuring drill bits with different specifications and types. The whole construction process of the rotary drilling rig comprises the following steps: and (4) rotating to hole, lowering a drill rod, pressurizing and drilling, reversely lifting the drill rod and rotating to throw soil. The rotary earth throwing is used as an indispensable process in the construction of the rotary drilling rig, and the efficiency of the rotary earth throwing is more and more a key factor influencing the construction efficiency of the rotary drilling rig. At present, the earth throwing mode of the rotary drilling rig is influenced by construction geology, drill bit models, specifications and the rotating speed of a power head, the earth throwing mode of the rotary drilling rig needs to be adjusted according to different construction working conditions, and efficient construction efficiency of the rotary drilling rig is guaranteed.
At present, in the soil throwing process of a rotary drilling rig, the difference of soil throwing effects of a power head under different stratums is large due to the influence of the reversing time of a valve core of a main control valve and the displacement change time of a main pump. Especially when boring into the clay layer, have and get rid of the soil effect relatively poor, the complete machine efficiency of construction low scheduling problem. To solve such problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a dig native system of getting rid of rig unit head soon to improve the efficiency of construction.
The utility model provides a dig native system that gets rid of rig unit head soon, include:
a hydraulic pump having a feedback port;
the power head motor is provided with a first working oil port and a second working oil port;
the main control valve is arranged between the hydraulic pump and the power head motor and comprises a reversing valve, the reversing valve is reversed to control the oil liquid of the hydraulic pump to flow to the first working oil port or the second working oil port, and the reversing valve is provided with a first hydraulic control end and a second hydraulic control end;
the power head motor is in a soil throwing mode, the pilot oil inlet is communicated with the first pilot oil port or the second pilot oil port alternately, so that the reversing valve is alternately changed; and
the pump displacement control valve is provided with a first oil port, a second oil port and a third oil port, the first oil port is connected with a feedback port of the hydraulic pump, the second oil port is connected with an oil outlet of the hydraulic pump, the third oil port is connected with the reversing valve, and when the power head motor is in a soil throwing mode, the first oil port and the second oil port of the pump displacement control valve are communicated to enable the hydraulic pump to work at full displacement.
In some embodiments, the pilot valve group comprises a pilot valve having a first oil port, a second oil port, a third oil port and a fourth oil port, the first oil port and the second oil port are connected with the pilot oil inlet, the third oil port is connected with the first pilot oil port, the fourth oil port is connected with the second pilot oil port, the pilot valve has a first working position and a second working position, in the first working position, the first oil port is communicated with the third oil port, and the second oil port is communicated with the fourth oil port; and in the second working position, the first oil port is communicated with the fourth oil port, and the second oil port is communicated with the third oil port.
In some embodiments, the pilot control valve group further includes a pilot handle, an oil inlet of the pilot handle is connected with the pilot oil inlet, a first oil outlet of the pilot handle is connected with a first oil port of the pilot control valve, a second oil outlet of the pilot handle is connected with a second oil port of the pilot control valve, when the power head motor is in the manual soil throwing mode, the pilot control valve is in the first working position, and the pilot handle is configured to be continuously reversed to enable the first oil outlet of the pilot handle or the second oil outlet of the pilot handle to alternately discharge oil.
In some embodiments, the pilot control valve group further comprises a pressure switch and a shuttle valve, an outlet of the shuttle valve is connected with the pressure switch, a first inlet of the shuttle valve is connected with the first oil outlet of the pilot handle, a second inlet of the shuttle valve is connected with the second oil outlet of the pilot handle, and the pressure switch detects pressure changes.
In some embodiments, the soil dumping control system further comprises a controller electrically connected to the pressure switch, the controller configured to determine that the power head motor is in the manual soil dumping mode according to a pressure variation signal of the pressure switch and control the pump displacement control valve to be powered so that the first oil port of the pump displacement control valve is communicated with the second oil port thereof.
In some embodiments, when the powerhead motor is in the automatic dumping mode, the pilot handle is configured to be in the same direction to enable one of the first oil outlet and the second oil outlet of the pilot handle to discharge oil, and the pilot control valve is configured to alternate between the first working position and the second working position to enable the third oil port or the fourth oil port of the pilot handle to discharge oil alternately.
In some embodiments, the soil dumping control system further comprises a controller and an automatic soil dumping button, the controller being configured to receive an operating signal of the automatic soil dumping button and to control the pilot control valve to alternately power on or power off.
In some embodiments, the soil throwing control system further comprises a soil throwing frequency adjusting knob, and the controller receives a frequency signal of the soil throwing frequency adjusting knob and controls the time interval of power on and power off of the pilot control valve according to the frequency signal.
In some embodiments, the controller is further configured to control the pump displacement control valve to be electrically energized such that the first port of the pump displacement control valve is in communication with the second port thereof.
In some embodiments, the main control valve further includes a pressure compensating valve, the third port of the pump displacement control valve is connected to the directional valve through the pressure compensating valve, and when the power head motor is in the non-soil dumping mode, the first port of the pump displacement control valve is communicated with the third port thereof, so that the load pressure of the power head motor is fed back to the feedback port of the hydraulic pump through the pump displacement control valve.
Based on the utility model provides a dig system of getting rid of rig unit head soon is in when getting rid of native mode at the unit head motor, and the first hydraulic fluid port and the second hydraulic fluid port intercommunication of pump displacement control valve just make the oil pressure direct action of the oil-out of hydraulic pump the feedback mouth of hydraulic pump so, and then make hydraulic pump work at full displacement, improved the unit head and got rid of the responsiveness of earth and got rid of native efficiency, and then improved the work efficiency of digging the rig soon.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:
fig. 1 is a schematic structural view of a power head earth-throwing control system of a rotary drilling rig according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a connection structure between the controller and other components according to an embodiment of the present invention;
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously positioned and the spatially relative descriptors used herein interpreted accordingly.
Referring to fig. 1, in some embodiments, an earth throwing system of a power head of a rotary drilling rig comprises:
a hydraulic pump having a feedback port;
the power head motor 4 is provided with a first working oil port and a second working oil port;
the main control valve 3 is arranged between the hydraulic pump and the power head motor 4 and comprises a reversing valve, the reversing valve is reversed to control the oil of the hydraulic pump to flow to the first working oil port or the second working oil port, and the reversing valve is provided with a first hydraulic control end and a second hydraulic control end;
the pilot control valve group is provided with a pilot oil inlet, a first pilot oil port and a second pilot oil port, the oil inlet of the pilot control valve group is connected with pilot oil P, the first pilot oil port of the pilot control valve group is connected with a first hydraulic control end of the reversing valve, the second pilot oil port of the pilot control valve group is connected with a second hydraulic control end of the reversing valve, and when the power head motor 4 is in a soil throwing mode, the pilot oil inlet is alternately communicated with the first pilot oil port or the second pilot oil port so that the reversing valve is alternately changed; and
the pump displacement control valve is provided with a first oil port, a second oil port and a third oil port, the first oil port is connected with a feedback port of the hydraulic pump, the second oil port is connected with an oil outlet of the hydraulic pump, the third oil port is connected with the reversing valve, and when the power head motor is in a soil throwing mode, the first oil port and the second oil port of the pump displacement control valve are communicated to enable the hydraulic pump to work at full displacement.
The embodiment of the utility model provides a get rid of native system is in when getting rid of native mode at the unit head motor, and the first hydraulic fluid port and the second hydraulic fluid port intercommunication of pump displacement control valve just so make the oil pressure direct action of the oil-out of hydraulic pump in the feedback mouth of hydraulic pump, and then make hydraulic pump work at full discharge capacity, have improved the unit head and have got rid of the responsiveness of earth and get rid of native efficiency, and then improve the work efficiency of digging the rig soon.
In some embodiments, referring to fig. 1, the pilot valve group comprises a pilot valve 6. The pilot control valve 6 has a first port, a second port, a third port, and a fourth port. The first oil port and the second oil port are connected with the pilot oil inlet, the third oil port is connected with the first pilot oil port, and the fourth oil port is connected with the second pilot oil port. The pilot control valve 6 is provided with a first working position and a second working position, and in the first working position, the first oil port is communicated with the third oil port, and the second oil port is communicated with the fourth oil port; and in the second working position, the first oil port is communicated with the fourth oil port, and the second oil port is communicated with the third oil port.
Referring to fig. 1, in some embodiments, the pilot control valve group further includes a pilot handle 9, an oil inlet of the pilot handle 9 is connected with a pilot oil inlet, and a first oil outlet of the pilot handle 9 is connected with a first oil port of the pilot control valve 6. And a second oil outlet of the pilot handle 9 is connected with a second oil outlet of the pilot control valve 6, when the power head motor 4 is in the manual soil throwing mode, the pilot control valve 6 is in a first working position, and the pilot handle 9 is configured to be continuously reversed to enable the first oil outlet or the second oil outlet of the pilot handle 9 to alternately discharge oil. When the pilot handle 9 is operated by a hand to carry out manual soil dumping, the pilot handle 9 needs to be repeatedly operated by the hand to enable the first oil outlet and the second oil outlet of the pilot handle 9 to alternately discharge oil at a certain time interval, when the first oil outlet of the pilot handle 9 discharges oil, the pilot oil flows to the first oil port of the pilot control valve 6 through the first oil outlet of the pilot handle 9 and flows out of the third oil port of the pilot control valve 6, and then flows to the upper hydraulic control end of the reversing valve; when the second oil outlet of the pilot handle 9 discharges oil, the pilot oil flows to the second oil port of the pilot control valve 6 through the second oil outlet of the pilot handle 9 and flows out from the fourth oil port of the pilot control valve 6, and then flows to the lower hydraulic control end of the reversing valve. When the first oil outlet and the second oil outlet of the pilot handle 9 alternately discharge oil, the reversing valve is continuously reversed, and then the power head motor 4 is controlled to repeatedly rotate forwards and backwards to drive soil in the drill bit to be thrown out.
In some embodiments, the pilot valve set further includes a pressure switch 7 and a shuttle valve 8. The outlet of the shuttle valve 8 is connected with the pressure switch 7, the first inlet of the shuttle valve 8 is connected with the first oil outlet of the pilot handle, the second inlet of the shuttle valve 8 is connected with the second oil outlet of the pilot handle, and the pressure switch 7 detects pressure change. When the power head motor 4 is in a manual soil throwing mode, the oil pressures of the first inlet and the second inlet of the shuttle valve 8 are also changed alternately, and the pressure switch 7 detects the pressure change.
In some embodiments, referring to fig. 2, the soil dumping control system further comprises a controller 100. The controller 100 is electrically connected to the pressure switch 7. The controller 100 is configured to determine that the power head motor is in the manual soil dumping mode according to the pressure variation signal of the pressure switch 7 and control the pump displacement control valve to be powered so that the first oil port of the pump displacement control valve is communicated with the second oil port thereof. That is to say, when the controller 100 judges that the power head motor 4 is in the manual mode of throwing soil according to the pressure variation that pressure switch 7 detected, the controller 100 control pump discharge capacity control valve gets electric and makes the first hydraulic fluid port and the second hydraulic fluid port intercommunication of pump discharge capacity control valve, and then makes the hydraulic pump work at full discharge capacity, has avoided the influence of the change of the pump discharge capacity of soil throwing in-process to the action of power head motor 4, promotes and gets rid of soil efficiency.
In some embodiments, when the powerhead motor is in the automatic dumping mode, the pilot handle 9 is configured to be in the same direction to enable one of the first and second oil outlets of the pilot handle 9 to discharge oil, and the pilot control valve 6 is configured to alternate between the first and second working positions to enable the third or fourth oil outlet thereof to discharge oil alternately.
In some embodiments, referring to fig. 2, the soil dumping control system further comprises a controller 100 and an automatic soil dumping button 130. The controller 100 is configured to receive an operation signal of the automatic soil dumping button 13 and control the pilot control valve 6 to be alternately powered on or powered off. When the manipulator presses the automatic soil throwing button 130, the controller 100 obtains an automatic soil throwing instruction, controls the electromagnetic control end Y03 of the pilot control valve 6 to be continuously powered on and powered off, and realizes repeated reversing action on the reversing valve, so that the power head motor continuously rotates forwards and backwards to drive the drill rod and the drill bit to repeatedly rotate forwards and backwards, and soil in the drill bit is thrown out.
In some embodiments, when the powerhead motor is in the auto-dumping mode, the controller 100 is further configured to control the pump displacement control valve to be energized such that the first port of the pump displacement control valve is in communication with the second port thereof.
In some embodiments, referring to fig. 2, the soil dumping control system further comprises a soil dumping frequency adjusting knob 13. The controller 100 receives the frequency signal of the soil throwing frequency adjusting knob 130 and controls the time interval of power on and power off of the pilot control valve 6 according to the frequency signal.
In some embodiments, the main control valve 3 further comprises a pressure compensation valve. The third oil port of the pump displacement control valve is connected with the reversing valve through the pressure compensation valve, and when the power head motor 4 is in a non-soil throwing mode, the first oil port of the pump displacement control valve is communicated with the third oil port of the pump displacement control valve, so that the load pressure of the power head motor is fed back to the feedback port of the hydraulic pump through the pump displacement control valve. When the power head motor 4 is in a non-soil-throwing mode, for example, in modes of rotating to hole, drill rod lowering, pressurizing drilling and the like, the pump displacement control valve can be controlled to lose power, the first oil port and the third oil port are communicated at the moment, the load pressure of the power head motor can be fed back to the feedback port of the hydraulic pump through the pressure compensation valve and the pump displacement control valve, and then the displacement of the hydraulic pump is changed along with the change of the load pressure.
The soil throwing system of the power head of the rotary drilling rig according to an embodiment of the present invention is described in detail with reference to fig. 1 and 2.
As shown in fig. 1, in the present embodiment, the soil dumping system of the power head of the rotary drilling rig includes an engine 1, a first hydraulic pump 21, a second hydraulic pump 22, a main control valve 3, a power head motor 4, an oil tank 5, a pilot control valve 6, a pressure switch 7, a shuttle valve 8, a pilot handle 9, and a pump displacement control valve group 10.
The engine 1 is drivingly connected with the first hydraulic pump 21 and the second hydraulic pump 22 to simultaneously drive the first hydraulic pump 21 and the second hydraulic pump 22 to operate.
The main control valve 3 has a first oil inlet P1, a second oil inlet P2, a first control oil port group and a second control oil port group. The first control oil port group comprises a first left control oil port A1 and a first right control oil port A2 which are connected with a first working oil port of the power head motor 4. The second control port group includes a second left control port B1 and a second right control port B2 connected with a second working port of the powerhead motor 4.
An oil outlet N1 of the first hydraulic pump 21 is connected with a first oil inlet P1 of the main control valve 3, and an oil outlet N2 of the second hydraulic pump 22 is connected with a second oil inlet P2 of the main control valve 3.
The main control valve 3 includes a first direction valve 31, a second direction valve 32, a first pressure compensating valve 33, and a second pressure compensating valve 34. The first and second direction valves 31 and 32 operate to control the flow of the hydraulic pump to the first or second control port group.
The first switching valve 31 has a first lower solenoid port a1 and a first upper solenoid port b1, and the second switching valve 32 has a second lower solenoid port a2 and a second upper solenoid port b 2.
The first and second lower solenoid ports a1 and a2 are connected to the fourth port of the pilot control valve 6, and the first and second upper solenoid ports b1 and b2 are connected to the third port of the pilot control valve 6.
A first oil port of the pilot control valve 6 is connected with a first oil outlet of the pilot handle 9, and a second oil port of the pilot control valve 6 is connected with a second oil outlet of the pilot handle 9. The pilot control valve 6 has an electromagnetic control end Y03, and when the electromagnetic control end Y03 is energized, the pilot control valve 6 operates at the right position, and at this time, the first oil port and the fourth oil port of the pilot control valve 6 are communicated, and the second oil port and the third oil port are communicated. When the electromagnetic control end Y03 loses power, the pilot control valve 6 works at the left position, and at the moment, the first oil port and the third oil port of the pilot control valve 6 are communicated, and the second oil port and the fourth oil port are communicated.
The pilot handle 9 is connected to a pilot oil source P.
The pump-displacement control valve group 10 includes a first pump-displacement control valve 11 and a second pump-displacement control valve 12. The first oil port of the first pump displacement control valve 11 is connected to the feedback port X1 of the first hydraulic pump 11, the second oil port of the first pump displacement control valve 11 is connected to the pressure measuring port M1 of the first hydraulic pump 11, and the pressure measuring port M1 is connected to the oil outlet N1 of the first hydraulic pump 11. The first oil port of the second pump displacement control valve 12 is connected with the feedback port X2 of the second hydraulic pump 12, the second oil port of the second pump displacement control valve 12 is connected with the pressure measuring port M2 of the second hydraulic pump 12, and the pressure measuring port M2 is connected with the oil outlet N2 of the second hydraulic pump 12.
The first pump displacement control valve 11 and the second pump displacement control valve 12 are both solenoid valves. The first pump-displacement control valve 11 has a solenoid-operated end Y01, and the second pump-displacement control valve 12 has a solenoid-operated end Y02. Taking the first pump displacement control valve 11 as an example, when the electromagnetic control end Y01 is powered, the first pump displacement control valve 11 works at the right position, and the first oil port is communicated with the second oil port. When the electromagnetic control end Y01 is de-energized, the first pump displacement control valve 11 works at the left position, and the first oil port is communicated with the third oil port.
As shown in fig. 2, the soil dumping system of the power head of the rotary drilling rig of the present embodiment further includes a controller 100, an automatic soil dumping button 110, a powerful soil dumping button 120, and a soil dumping frequency adjusting knob 130. The controller 100 is electrically connected to the solenoid-operated end Y03 of the pilot control valve 6, the solenoid-operated end Y01 of the first pump displacement control valve 11, and the solenoid-operated end Y02 of the second pump displacement control valve 12, so as to automatically control the energization and de-energization of the respective solenoid-operated ends.
When the pilot handle 9 is operated by a machine hand to carry out manual soil throwing, the machine hand needs to repeatedly operate the pilot handle 9, so that the first oil outlet and the second oil outlet of the pilot handle 9 respectively provide hydraulic oil for the hydraulic control ends of the first reversing valve 31 and the second reversing valve 32 of the main control valve 3 at fixed time intervals, and reversing action of the valve core is realized. At this moment, the hydraulic oil output by the pilot handle 9 is continuously changed due to pressure, the pressure switch 7 detects the change of the pilot pressure and transmits the change of the pilot pressure to the controller 100, the powerful earth throwing button 120 is pressed down, the controller 100 judges that the mode is a manual earth throwing mode at this moment, and the electromagnetic control end Y01 and the electromagnetic control end Y02 are controlled to be electrified so as to enable the first pump displacement control valve 11 and the second pump displacement control valve 12 to be reversed, the feedback port X1/X2 of the hydraulic pump and the pressure measuring port M1/M2 are communicated with oil, at this moment, the first hydraulic pump and the second hydraulic pump work at full displacement, the influence of the pump displacement change on the action of a power head motor during earth throwing is avoided, and the earth throwing efficiency is improved.
When the pilot presses the automatic soil dumping button 110, the controller 100 obtains an automatic soil dumping command, and controls the electromagnetic control end Y03 of the pilot control valve 6 to be electrified, so that the pilot control valve 6 works at the right position, and the pilot oil reaches the pilot oil port b1/b2 of the main control valve 3. The B1/B2 port of the main control valve 3 produces oil to reach the power head motor 4, then the electromagnetic control end Y03 of the pilot control valve 6 is controlled to lose power, the pilot oil reaches the pilot oil port a1/a2 of the main control valve 3, the A1/A2 port of the main control valve 3 produces oil to reach the hydraulic motor 4, the controller 100 is used for controlling the pilot control valve 6 to continuously obtain power and lose power, the repeated reversing action of the main control valve 3 is realized, the power head motor 4 continuously rotates forwards and backwards, the drill rod and the drill bit are driven to repeatedly rotate forwards and backwards, and soil in the drill bit is thrown out. When the automatic soil throwing button 110 is pressed, the solenoid control end Y01 and the solenoid control end Y02 are simultaneously controlled to be electrified, the first pump displacement control valve 11 and the second pump displacement control valve 12 are reversed, and the pump works at the full displacement.
The earth-throwing frequency adjusting knob 130 can meet the requirement of earth-throwing frequency of the power head when the rotary drilling rig is constructed in different stratums and by using different drill bits, and ensures that the rotary drilling rig is constructed efficiently. Through adjusting the soil throwing frequency adjusting knob 130, the time interval of power on and power off of the electromagnetic control end Y03 of the pilot control valve 6 is controlled, the pilot control valve 6 performs reversing action according to the set time interval, so that the valve core reversing action of the main control valve 3 is adjusted, and the adjusting requirement of the reversing frequency of the power head is met.
The utility model discloses dig native system of getting rid of rig unit head soon provides two kinds of modes of getting rid of soil, manually get rid of the soil mode promptly and get rid of the soil mode automatically, two kinds of modes are all got electric through controller control pump discharge capacity control valve, make pump work at the full discharge capacity, improved the responsiveness that the unit head got rid of soil, reply that can relax gets rid of the powerless condition of soil, and automatically get rid of the soil mode and can reduce the requirement to the mobile phone operational capability, very big less working strength and promotion efficiency of construction.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.
Claims (10)
1. The utility model provides a dig native system of getting rid of rig unit head soon which characterized in that includes:
a hydraulic pump having a feedback port;
the power head motor (4) is provided with a first working oil port and a second working oil port;
the main control valve (3) is arranged between the hydraulic pump and the power head motor (4) and comprises a reversing valve, the reversing valve is reversed to control oil of the hydraulic pump to flow to the first working oil port or the second working oil port, and the reversing valve is provided with a first hydraulic control end and a second hydraulic control end;
the power head motor (4) is in a soil throwing mode, the pilot oil inlet is communicated with the first pilot oil port or the second pilot oil port in an alternating mode, and the reversing valve is enabled to be alternately switched; and
the pump displacement control valve is provided with a first oil port, a second oil port and a third oil port, the first oil port is connected with a feedback port of the hydraulic pump, the second oil port is connected with an oil outlet of the hydraulic pump, the third oil port is connected with the reversing valve, and when the power head motor is in a soil throwing mode, the first oil port of the pump displacement control valve is communicated with the second oil port so that the hydraulic pump works at full displacement.
2. The soil dumping system of the power head of the rotary drilling rig according to claim 1, wherein the pilot control valve group comprises a pilot control valve (6), the pilot control valve (6) is provided with a first oil port, a second oil port, a third oil port and a fourth oil port, the first oil port and the second oil port are connected with the pilot oil inlet, the third oil port is connected with the first pilot oil port, the fourth oil port is connected with the second pilot oil port, the pilot control valve (6) is provided with a first working position and a second working position, the first oil port is communicated with the third oil port in the first working position, and the second oil port is communicated with the fourth oil port; and in a second working position, the first oil port is communicated with the fourth oil port, and the second oil port is communicated with the third oil port.
3. The earth throwing system of the power head of the rotary drilling rig according to claim 2, wherein the pilot control valve group further comprises a pilot handle (9), an oil inlet of the pilot handle (9) is connected with an oil inlet of the pilot, a first oil outlet of the pilot handle (9) is connected with a first oil port of the pilot control valve (6), a second oil outlet of the pilot handle (9) is connected with a second oil port of the pilot control valve (6), when the power head motor is in a manual earth throwing mode, the pilot control valve (6) is in a first working position, and the pilot handle (9) is configured to be continuously reversed to enable the first oil outlet or a second oil outlet of the pilot handle (9) to alternately discharge oil.
4. The earth throwing system of the power head of the rotary drilling rig according to claim 3, wherein the pilot control valve group further comprises a pressure switch (7) and a shuttle valve (8), an outlet of the shuttle valve (8) is connected with the pressure switch (7), a first inlet of the shuttle valve (8) is connected with a first oil outlet of the pilot handle, a second inlet of the shuttle valve (8) is connected with a second oil outlet of the pilot handle, and the pressure switch (7) detects pressure changes.
5. The soil dumping system of the power head of the rotary drilling rig according to claim 4, further comprising a controller (100), wherein the controller (100) is electrically connected with the pressure switch (7), and the controller (100) is configured to judge that the power head motor is in a manual soil dumping mode according to a pressure change signal of the pressure switch (7) and control the pump displacement control valve to be powered on so that the first oil port of the pump displacement control valve is communicated with the second oil port thereof.
6. The earth throwing system of a rotary drilling rig power head according to claim 3, wherein when the power head motor is in an automatic earth throwing mode, the pilot handle (9) is configured to be in the same direction so that one of the first oil outlet and the second oil outlet of the pilot handle (9) discharges oil, and the pilot control valve (6) is configured to be alternately shifted between the first working position and the second working position so that the third oil port or the fourth oil port thereof discharges oil alternately.
7. The earth throwing system of a rotary drilling rig power head according to claim 6, characterized in that the earth throwing control system further comprises a controller (100) and an automatic earth throwing button (110), wherein the controller (100) is configured to receive an operation signal of the automatic earth throwing button (110) and control the pilot control valve (6) to be alternately powered on or powered off.
8. The earth throwing system of the power head of the rotary drilling rig according to claim 7, wherein the earth throwing control system further comprises an earth throwing frequency adjusting knob (130), and the controller (100) receives a frequency signal of the earth throwing frequency adjusting knob (130) and controls the time interval of power on and power off of the pilot control valve (6) according to the frequency signal.
9. The earth throwing system of a rotary drilling rig power head according to claim 7, wherein the controller (100) is further configured to control the pump displacement control valve to be energized such that a first oil port of the pump displacement control valve is communicated with a second oil port thereof.
10. The earth throwing system of the power head of the rotary drilling rig according to claim 1, wherein the main control valve further comprises a pressure compensation valve, a third oil port of the pump displacement control valve is connected with the reversing valve through the pressure compensation valve, and when the power head motor (4) is in a non-earth throwing mode, the first oil port of the pump displacement control valve is communicated with the third oil port of the pump displacement control valve, so that the load pressure of the power head motor is fed back to the feedback port of the hydraulic pump through the pump displacement control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121232992.2U CN214888031U (en) | 2021-06-03 | 2021-06-03 | Soil throwing system of power head of rotary drilling rig |
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| CN114109940A (en) * | 2021-12-02 | 2022-03-01 | 北京三一智造科技有限公司 | Hydraulic system and rotary drilling rig |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114109940A (en) * | 2021-12-02 | 2022-03-01 | 北京三一智造科技有限公司 | Hydraulic system and rotary drilling rig |
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