CN211144359U - Power head system and rotary drilling rig - Google Patents
Power head system and rotary drilling rig Download PDFInfo
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- CN211144359U CN211144359U CN201922390005.0U CN201922390005U CN211144359U CN 211144359 U CN211144359 U CN 211144359U CN 201922390005 U CN201922390005 U CN 201922390005U CN 211144359 U CN211144359 U CN 211144359U
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Abstract
The utility model provides a unit head system and dig rig soon relates to engineering machine's technical field. The power head system comprises a power box, a speed reducer, a first liquid pump and a filter, wherein a liquid inlet and a liquid outlet are formed in the power box, and the liquid inlet and the liquid outlet of the power box are respectively communicated with the speed reducer through pipelines. The first liquid pump is arranged on a pipeline between the power box and the speed reducer. The filter is arranged on a pipeline between a liquid outlet of the power box and the speed reducer. The rotary drilling rig comprises the power head system. The utility model discloses alleviated the gear that exists among the prior art in the speed reducer among the rotary drilling rig unit head system often be in high-speed running state, not only can and the bearing between the friction produce a large amount of heats, thereby can also drive impurity rapid movements such as iron fillings in the gear oil aggravate the wearing and tearing of gear, and then can very big influence the technical problem of the life of speed reducer.
Description
Technical Field
The utility model belongs to the technical field of the engineering machine tool technique and specifically relates to a unit head system and dig rig soon.
Background
The power head system is a key component of the rotary drilling rig, and comprises a power head motor, a speed reducer and a power box which are sequentially connected, wherein the power box is connected with a drill rod of the rotary drilling rig. The power head motor is used for converting hydraulic energy into mechanical energy and then outputting rotating speed and torque, the speed reducer and the power box are used for reducing the rotating speed output by the power head motor and increasing the torque, the reduced rotating speed and the increased torque are transmitted to the drill rod, and then the drill rod is driven to rotate.
A speed reducer in a power head system of the rotary drilling rig is provided with a gear for speed reduction transmission and gear oil for protecting the gear. Because the rotary drilling rig is often used in the construction process with complex working conditions, gears in a speed reducer of the rotary drilling rig are often in a high-speed running state.
And the gear that is in high-speed running state not only can produce a large amount of heats with the friction between the bearing, thereby can also drive impurity rapid movements such as iron fillings in the gear oil aggravate the wearing and tearing of gear, and then the life of influence speed reducer that can be very big.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a unit head system with dig rig soon to alleviate the gear that exists among the prior art in digging the speed reducer among the rig unit head system soon and often be in high-speed running state, not only can and the bearing between the friction produce a large amount of heats, thereby can also drive the wearing and tearing of impurity rapid movements aggravation gear such as iron fillings in the gear oil, and then the technical problem of the life of influence speed reducer that can be very big.
The utility model provides a power head system which comprises a power box, a speed reducer, a first liquid pump and a filter;
the power box is provided with a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet of the power box are respectively communicated with the speed reducer through pipelines;
the first liquid pump is arranged on a pipeline between the power box and the speed reducer;
the filter is arranged on a pipeline between a liquid outlet of the power box and the speed reducer.
Furthermore, along the height direction of the speed reducer, a first liquid inlet, a second liquid inlet and a liquid return port are sequentially arranged on the speed reducer, and the heights of the first liquid inlet, the liquid return port and the second liquid inlet of the speed reducer are sequentially increased relative to the bottom surface of the speed reducer;
the first liquid inlet and the second liquid inlet are both communicated with a liquid return port on the power box through a pipeline; the liquid return port of the speed reducer is communicated with the liquid inlet on the power box through a pipeline.
Furthermore, the power head system also comprises a first branch pipeline and a first overflow valve;
the first branch pipeline is communicated between the power box and the first liquid pump, and the first overflow valve is installed on the first branch pipeline.
Furthermore, the first liquid pump is a gear pump, and the power head system further comprises a motor, wherein the motor is connected with the first liquid pump and used for driving the first liquid pump to work.
Furthermore, the motor is a hydraulic motor, and the power head system further comprises a second liquid pump and a liquid medium source;
the hydraulic motor comprises an inlet and an outlet, the inlet and the outlet of the hydraulic motor are communicated with a liquid medium source through pipelines, and the second liquid pump is communicated on the pipeline between the hydraulic motor and the liquid medium source.
Furthermore, a pipeline between the liquid medium source and an inlet of the hydraulic motor is a liquid inlet pipeline, and a pipeline between an outlet of the hydraulic motor and the liquid medium source is a liquid outlet pipeline; the second liquid pump is communicated with the liquid inlet pipeline;
the power head system also comprises a reversing valve, the reversing valve is communicated with a position, located between the second liquid pump and an inlet of the hydraulic motor, of the liquid inlet pipeline, and the reversing valve is communicated with the liquid outlet pipeline;
the reversing valve comprises two stations, wherein one station is used for respectively communicating the liquid inlet pipeline and the liquid outlet pipeline so as to form a circulation loop between the liquid medium source and the hydraulic motor; and the other station is used for communicating the liquid inlet pipeline with the liquid outlet pipeline.
Furthermore, the power head system also comprises a speed regulating valve which is communicated with a pipeline between the inlet of the hydraulic motor and the liquid medium source.
Furthermore, the power head system also comprises a second branch pipeline and a second overflow valve;
the second liquid pump comprises an inlet and an outlet, and the second branch pipeline is communicated between the outlet of the second liquid pump and the liquid medium source;
the second overflow valve is installed on the second branch pipeline.
Furthermore, the second liquid pump is a gear pump, the power head system further comprises an engine, and the engine is connected with the second liquid pump and used for driving the second liquid pump to work.
The utility model provides a dig rig soon includes any one of the above-mentioned technical scheme unit head system.
The utility model provides a from the inner head system and dig the rig soon and can produce following beneficial effect:
the utility model provides a unit head system includes headstock, speed reducer, first liquid pump and filter, and the inlet and the liquid outlet of headstock communicate with the speed reducer through the pipeline respectively. The first liquid pump is arranged on a pipeline between the power box and the speed reducer. The filter is arranged on a pipeline between a liquid outlet of the power box and the speed reducer. After the first liquid pump starts to work, the first liquid pump can drive gear oil in the speed reducer to flow out of the speed reducer, penetrate through the liquid inlet of the power box and then flow into the power box. Gear oil enters the power box, can continuously pass through the power box under the action of the first liquid pump and flows out of a liquid outlet of the power box, and then returns to the speed reducer after passing through a filter between the liquid outlet of the power box and the speed reducer. The gear oil in the speed reducer can bring heat in the speed reducer out to the power box in the flowing process. The power box is an inherent structure in the power head system, and the volume of the power box is generally larger than that of the speed reducer, so that the power box can play a role in increasing the heat dissipation area, further can play a good heat dissipation effect on gear oil in the speed reducer, and prolongs the service life of the speed reducer. And gear oil for protecting a gear in the power box is also filled in the power box, the gear oil in the speed reducer and the gear oil in the power box can circularly flow in a pipeline, and the gear oil can be always kept in the speed reducer. In addition, when the gear oil in the speed reducer flows through the filter in the flowing process, impurities such as iron filings in the gear oil can be intercepted by the filter and can be left on the side of the filter, which is far away from the speed reducer, under the action of the first liquid pump. At the moment, impurities such as scrap iron in the gear oil can only be taken out of the speed reducer under the action of the first liquid pump, and the impurities cannot return to the speed reducer under the combined action of the filter and the first liquid pump, so that abrasion of the gear in the speed reducer due to the impurities such as the scrap iron in the gear oil can be reduced, and the service life of the speed reducer can be prolonged.
It can be seen that, compare with prior art, the utility model provides a unit head system utilizes the cooperation of first liquid pump and headstock to use the heat radiating area that can increase the gear oil in the speed reducer, and then reaches the radiating effect of heat in to the speed reducer. The cooperation that utilizes first liquid pump and filter is used and can be constantly carry out impurity such as iron fillings in the gear oil in the speed reducer and can be so that impurity such as above-mentioned iron fillings can not get back to in the speed reducer to the wearing and tearing that the gear that can reduce in the speed reducer received. And after the heat dissipation effect in the speed reducer is improved and the impurity content in the gear oil in the speed reducer is reduced, the service life of the speed reducer can be prolonged.
The utility model provides a dig rig soon includes above-mentioned unit head system, therefore the utility model provides a dig rig soon has the same beneficial effect with above-mentioned unit head system.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of a working principle of a power head system according to an embodiment of the present invention.
Icon: 1-a power box; 10-liquid inlet; 11-a liquid outlet; 2, a speed reducer; 20-a first liquid inlet; 21-a second liquid inlet; 22-a liquid return port; 3-a first liquid pump; 30-a motor; 4-a filter; 5-a first branch conduit; 50-a first overflow valve; 6-a second liquid pump; 60-an engine; 7-a source of liquid medium; 8-a reversing valve; 80-a liquid inlet pipeline; 800-speed regulating valve; 81-liquid outlet pipeline; 9-a second branch conduit; 90-second overflow valve.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The first embodiment is as follows:
as shown in fig. 1, the power head system provided in the present embodiment includes a power box 1, a speed reducer 2, a first fluid pump 3, and a filter 4. A liquid inlet 10 and a liquid outlet 11 are arranged on the power box 1, and the liquid inlet 10 and the liquid outlet 11 of the power box 1 are respectively communicated with the speed reducer 2 through pipelines. The first liquid pump 3 is provided on a pipe between the power box 1 and the reduction gear 2. The filter 4 is arranged on a pipeline between the liquid outlet 11 of the power box 1 and the speed reducer 2.
After the first liquid pump 3 starts to work, the first liquid pump 3 drives gear oil in the speed reducer 2 to flow out of the speed reducer 2, pass through the liquid inlet 10 of the power box 1 and then flow into the power box 1. The gear oil entering the power box 1 continuously passes through the power box 1 under the action of the first liquid pump 3 and flows out of the liquid outlet 11 of the power box 1, then passes through the liquid outlet 11 of the power box 1 and the filter 4 between the speed reducer 2 and then returns to the speed reducer 2. The gear oil in the speed reducer 2 brings heat in the speed reducer 2 out to the power box 1 in the flowing process. The power box 1 is an inherent structure in the power head system, and the volume of the power box 1 is generally larger than that of the speed reducer 2, so that the power box 1 can play a role in increasing the heat dissipation area, and further can play a good heat dissipation effect on gear oil in the speed reducer 2, and prolong the service life of the speed reducer 2. And the power box 1 is also filled with gear oil for protecting the gear in the power box 1, the gear oil in the speed reducer 2 and the gear oil in the power box 1 can circularly flow in a pipeline, and the gear oil can be always kept in the speed reducer 2.
In addition, when the gear oil in the reducer 2 flows through the filter 4 in the above-described flowing process, impurities such as iron pieces in the gear oil can be intercepted by the filter 4 and can be left on the side of the filter 4 facing away from the reducer 2 by the action of the first liquid pump 3. At this moment, impurities such as scrap iron in the gear oil can only be brought out of the speed reducer 2 under the action of the first liquid pump 3, and the impurities cannot return to the speed reducer 2 under the combined action of the filter 4 and the first liquid pump 3, so that abrasion of the gear in the speed reducer 2 caused by the impurities such as the scrap iron in the gear oil can be reduced, and the service life of the speed reducer 2 can be prolonged.
It can be seen that, compare with prior art, the unit head system that this embodiment provided utilizes the cooperation of first fluid pump 3 and headstock 1 to use and can increase the heat radiating area of the gear oil in speed reducer 2, and then reaches the radiating effect of the heat to in speed reducer 2. The cooperation that utilizes first liquid pump 3 and filter 4 is used and can be constantly carry out impurity such as iron fillings in the gear oil in speed reducer 2 and can make impurity such as above-mentioned iron fillings can not get back to in speed reducer 2 to the wearing and tearing that the gear that can reduce in speed reducer 2 received. And after the heat dissipation effect of the speed reducer 2 is improved and the impurity content in the gear oil in the speed reducer 2 is reduced, the service life of the speed reducer 2 can be prolonged.
Therefore, the power head system provided by the embodiment alleviates the technical problems that the gear in the speed reducer of the rotary drilling rig power head system in the prior art is often in a high-speed running state, not only can the friction between the gear and the bearing generate a large amount of heat, but also can drive impurities such as scrap iron in gear oil to rapidly move so as to aggravate the abrasion of the gear, and further can greatly influence the service life of the speed reducer.
The number of the speed reducers 2 is not limited, and when the number of the speed reducers 2 in the power head system provided by the embodiment is multiple, the multiple speed reducers 2 can be communicated in parallel through pipelines.
As shown in fig. 1, along the height direction of the speed reducer 2, a first liquid inlet 20, a second liquid inlet 21 and a liquid return port 22 are sequentially arranged on the speed reducer 2, and the heights of the first liquid inlet 20, the liquid return port 22 and the second liquid inlet 21 of the speed reducer 2 are sequentially increased relative to the bottom surface of the speed reducer 2. The first liquid inlet 20 and the second liquid inlet 21 are both communicated with a liquid return port 22 on the power box 1 through a pipeline, and the liquid return port 22 of the speed reducer 2 is communicated with the liquid inlet 10 on the power box 1 through a pipeline.
The first liquid pump 3 can pump out the gear oil in the speed reducer 2 from a liquid return port 22 which is positioned between the first liquid inlet 20 and the second liquid inlet 21 in height, and simultaneously send the gear oil subjected to heat dissipation and filtration into the speed reducer 2 through the first liquid inlet 20 and the second liquid inlet 21.
Since the heights of the first liquid inlet 20, the liquid return port 22, and the second liquid inlet 21 of the speed reducer 2 are sequentially increased with respect to the bottom surface of the speed reducer 2, the hydraulic pressure of the gear oil inside the speed reducer 2 is maintained at the height of the liquid return port 22. The gear transmission structure in the speed reducer 2 generally comprises a part which is located above and runs at a high speed and a part which is located below and runs at a reduced speed after transmission, at the moment, the height of the liquid return port 22 is located between the two gear transmission structures, the part, running at a high speed, of the gear transmission structure, which is located above the liquid return port 22, can be cooled through gear oil sprayed from the second liquid inlet 21, the part, running at a reduced speed, of the gear transmission structure, which is located below the liquid return port 22, can be soaked by gear oil which enters from the first liquid inlet 20 and is subjected to heat dissipation, the gear oil entering from the first liquid inlet 20 not only can cool the part, running of an oil film between gears of the gear transmission structure, and further can play a good lubricating protection role.
Further, as shown in fig. 1, the first liquid inlet 20 and the second liquid inlet 21 are disposed on the same vertical sidewall of the speed reducer 2, and the liquid return port 22 is disposed on a vertical sidewall of the speed reducer 2 opposite to the vertical sidewall where the first liquid inlet 20 is disposed. At this time, the transverse distances between the first liquid inlet 20 and between the second liquid inlet 21 and the first liquid inlet 20 are large, and the heat dissipation and cooling effects on the large-area gear transmission structure in the speed reducer 2 can be achieved.
As shown in fig. 1, the power head system provided in this embodiment further includes a first branch conduit 5 and a first overflow valve 50, the first branch conduit 5 is communicated between the power box 1 and the first fluid pump 3, and the first overflow valve 50 is installed on the first branch conduit 5.
The first overflow valve 50 is used for safety protection, and accidents caused by overhigh pressure in the pipeline between the power box 1, the speed reducer 2 and the first liquid pump 3 are prevented.
In this embodiment, it is preferable that the first fluid pump 3 is a gear pump, and the power head system further includes a motor 30, where the motor 30 is connected to the first fluid pump 3 and is used for driving the first fluid pump 3 to work.
The motor 30 is used for providing source power for the first liquid pump 3 so as to enable the first liquid pump 3 to work, and then the gear oil in the speed reducer 2 can be driven to flow to the filter 4 and the power box 1 in sequence and then return to the speed reducer 2.
Further, the motor 30 is a hydraulic motor 30, and as shown in fig. 1, the power head system provided in the present embodiment further includes a second fluid pump 6 and a fluid medium source 7. The hydraulic motor 30 comprises an inlet and an outlet, both of which of the hydraulic motor 30 are in communication with the liquid medium source 7 via a conduit, and the second liquid pump 6 is in communication with the conduit between the hydraulic motor 30 and the liquid medium source 7.
The liquid medium source 7 and the second liquid pump 6 are used for providing source power for the hydraulic motor 30, so that the hydraulic motor 30 can output torque, and the first liquid pump 3 can be driven to work.
In this embodiment, the preferable liquid medium source 7 is a hydraulic oil tank in a chassis of the rotary drilling rig in which the power head system is located, and at this time, it is not necessary to additionally add the liquid medium source 7 to the power head system, and the first liquid pump 3 can still be driven to operate when the power box 1 and the speed reducer 2 in the power head system do not operate, so that the gear oil in the speed reducer 2 can still be cooled and filtered.
Further, the speed reducer 2 and the power box 1 in the power head system of the present embodiment are both installed at the home position of the rotary drilling rig, and the filter 4, the first fluid pump 3, and the hydraulic motor 30 may be installed near the power box 1. And the liquid medium source 7 and the second liquid pump 6 can be both arranged at a position far away from the power box 1, such as on a chassis of a rotary drilling rig.
As shown in fig. 1, the pipe between the liquid medium source 7 and the inlet of the hydraulic motor 30 is an inlet pipe 80, and the pipe between the outlet of the hydraulic motor 30 and the liquid medium source 7 is an outlet pipe 81. The second liquid pump 6 is connected to the liquid inlet pipe 80. The powerhead system also includes a reversing valve 8, the reversing valve 8 communicating at a location of the inlet conduit 80 between the second fluid pump 6 and the inlet of the hydraulic motor 30, and the reversing valve 8 communicating with the outlet conduit 81.
Wherein, the reversing valve 8 comprises two stations, wherein one station is used for respectively communicating the liquid inlet pipeline 80 and the liquid outlet pipeline 81, so that a circulation loop is formed between the liquid medium source 7 and the hydraulic motor 30. And the other station is used for communicating the liquid inlet pipeline 80 with the liquid outlet pipeline 81.
When the reversing valve 8 is in a position for communicating the liquid inlet pipe 80 and the liquid outlet pipe 81 respectively, a circulation loop can be formed between the liquid medium source 7 and the hydraulic motor 30, and the second liquid pump 6 can convey the liquid medium in the liquid medium source 7 to the hydraulic motor 30, so that the hydraulic motor 30 can be driven to work.
When the reversing valve 8 is located at a station for communicating the liquid inlet pipeline 80 with the liquid outlet pipeline 81, a loop between the liquid medium source 7 and the hydraulic motor 30 is blocked, at this time, a circulation loop can be formed among the liquid inlet pipeline 80, the liquid outlet pipeline 81, the second liquid pump 6 and the liquid medium source 7, and the liquid medium in the liquid medium source 7 can only flow out of the liquid medium source 7 under the action of the second liquid pump 6 and then returns to the liquid medium source 7, so that the second liquid pump 6 can be prevented from being damaged because the liquid medium pumped by the second liquid pump 6 cannot flow in the circulation loop.
When the reversing valve 8 is located at a station for communicating the liquid inlet pipeline 80 with the liquid outlet pipeline 81, the hydraulic motor 30 cannot obtain a liquid medium so as not to drive the first liquid pump 3 to work, and at the moment, gear oil in a circulation loop between the speed reducer 2 and the power box 1 cannot flow circularly, so that the filter 4 can be detached from the circulation loop conveniently to clean impurities such as scrap iron and the like filtered and intercepted by the filter 4.
It can be seen that the two stations of the reversing valve 8 are respectively used for controlling the opening and closing of the hydraulic motor 30, so that whether gear oil in a circulation loop between the speed reducer 2 and the power box 1 can flow circularly or not can be controlled, and the use flexibility of the power head system is improved.
In the present embodiment, the directional control valve 8 may be an electromagnetic directional control valve 8, or may be a pilot operated directional control valve 8.
As shown in fig. 1, the present embodiment provides a powerhead system further comprising a speed valve 800, the speed valve 800 communicating with a conduit between an inlet of the hydraulic motor 30 and the source of liquid medium 7.
The speed regulating valve 800 is used for regulating the flow of the liquid medium entering the hydraulic motor 30, and further can control the rotating speed of the hydraulic motor 30 and the output flow of the first liquid pump 3, so that the filtering effect and the heat dissipation effect can be flexibly regulated.
As shown in fig. 1, the powerhead system provided by the present embodiment further includes a second branch conduit 9 and a second overflow valve 90, the second liquid pump 6 includes an inlet and an outlet, and the second branch conduit 9 is communicated between the outlet of the second liquid pump 6 and the liquid medium source 7. A second relief valve 90 is mounted on the second branch pipe 9.
The second overflow valve 90 is also used for safety protection, and accidents caused by overhigh pressure in the liquid inlet pipeline 80 and the liquid outlet pipeline 81 are prevented.
In the present embodiment, the second liquid pump 6 is a gear pump. As shown in fig. 1, the power head system provided in this embodiment further includes an engine 60, and the engine 60 is connected to the second liquid pump 6 and is configured to drive the second liquid pump 6 to operate.
The engine 60 is used to power the second liquid pump 6 to enable the second liquid pump 6 to operate, thereby driving the liquid medium in the liquid medium source 7 to flow to the hydraulic motor 30.
Example two:
the rotary drilling rig provided by the embodiment comprises the power head system in the first embodiment, so that the same technical problems and the same technical effects can be solved by the rotary drilling rig provided by the embodiment with the power head system in the first embodiment.
Therefore, the rotary drilling rig provided by the embodiment can also relieve the technical problems that the gear in the speed reducer in the power head system of the rotary drilling rig in the prior art is often in a high-speed running state, not only can the friction between the gear and the bearing generate a large amount of heat, but also can drive impurities such as scrap iron in gear oil to rapidly move so as to aggravate the abrasion of the gear, and further the service life of the speed reducer is greatly influenced.
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 the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A power head system is characterized by comprising a power box (1), a speed reducer (2), a first liquid pump (3) and a filter (4);
a liquid inlet (10) and a liquid outlet (11) are formed in the power box (1), and the liquid inlet (10) and the liquid outlet (11) of the power box (1) are respectively communicated with the speed reducer (2) through pipelines;
the first liquid pump (3) is arranged on a pipeline between the power box (1) and the speed reducer (2);
the filter (4) is arranged on a pipeline between the liquid outlet (11) of the power box (1) and the speed reducer (2).
2. The power head system of claim 1, wherein a first liquid inlet (20), a second liquid inlet (21) and a liquid return port (22) are sequentially arranged on the speed reducer (2) along the height direction of the speed reducer (2), and the heights of the first liquid inlet (20), the liquid return port (22) and the second liquid inlet (21) of the speed reducer (2) are sequentially increased relative to the bottom surface of the speed reducer (2);
the first liquid inlet (20) and the second liquid inlet (21) are communicated with a liquid return port (22) on the power box (1) through a pipeline; and a liquid return port (22) of the speed reducer (2) is communicated with a liquid inlet (10) on the power box (1) through a pipeline.
3. The powerhead system of claim 1, further comprising a first branch conduit (5) and a first excess flow valve (50);
the first branch pipeline (5) is communicated between the power box (1) and the first liquid pump (3), and the first overflow valve (50) is installed on the first branch pipeline (5).
4. The powerhead system according to any one of claims 1 to 3, wherein the first fluid pump (3) is a gear pump, and the powerhead system further comprises a motor (30), wherein the motor (30) is connected with the first fluid pump (3) and is used for driving the first fluid pump (3) to work.
5. The powerhead system of claim 4, wherein the motor (30) is a hydraulic motor (30), the powerhead system further comprising a second fluid pump (6) and a fluid medium source (7);
the hydraulic motor (30) comprises an inlet and an outlet, the inlet and the outlet of the hydraulic motor (30) are both in communication with the source of liquid medium (7) by means of a conduit, and the second liquid pump (6) is in communication on the conduit between the hydraulic motor (30) and the source of liquid medium (7).
6. The powerhead system of claim 5, wherein the conduit between the source of liquid medium (7) and the inlet of the hydraulic motor (30) is an inlet conduit (80), and the conduit between the outlet of the hydraulic motor (30) and the source of liquid medium (7) is an outlet conduit (81); the second liquid pump (6) is communicated with the liquid inlet pipeline (80);
the power head system further comprises a reversing valve (8), the reversing valve (8) is communicated at a position, located between the inlet of the second liquid pump (6) and the inlet of the hydraulic motor (30), of the liquid inlet pipeline (80), and the reversing valve (8) is communicated with the liquid outlet pipeline (81);
the reversing valve (8) comprises two stations, wherein one station is used for respectively communicating the liquid inlet pipeline (80) and the liquid outlet pipeline (81) so as to form a circulation loop between the liquid medium source (7) and the hydraulic motor (30); the other station is used for communicating the liquid inlet pipeline (80) with the liquid outlet pipeline (81).
7. The powerhead system of claim 5, further comprising a speed valve (800), the speed valve (800) communicating over a conduit between an inlet of the hydraulic motor (30) and the source of liquid medium (7).
8. The powerhead system of claim 5, further comprising a second branch conduit (9) and a second relief valve (90);
the second liquid pump (6) comprising an inlet and an outlet, the second branch conduit (9) communicating between the outlet of the second liquid pump (6) and the source of liquid medium (7);
the second overflow valve (90) is mounted on the second branch pipe (9).
9. The powerhead system of claim 5, wherein the second liquid pump (6) is a gear pump, and the powerhead system further comprises an engine (60), wherein the engine (60) is connected with the second liquid pump (6) and is used for driving the second liquid pump (6) to work.
10. A rotary drilling rig, characterized in that the rotary drilling rig comprises a power head system according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922390005.0U CN211144359U (en) | 2019-12-26 | 2019-12-26 | Power head system and rotary drilling rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922390005.0U CN211144359U (en) | 2019-12-26 | 2019-12-26 | Power head system and rotary drilling rig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211144359U true CN211144359U (en) | 2020-07-31 |
Family
ID=71776535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922390005.0U Active CN211144359U (en) | 2019-12-26 | 2019-12-26 | Power head system and rotary drilling rig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211144359U (en) |
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2019
- 2019-12-26 CN CN201922390005.0U patent/CN211144359U/en active Active
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