CN219431829U - Three-arm drill jumbo water system suitable for extreme environments of plateau - Google Patents
Three-arm drill jumbo water system suitable for extreme environments of plateau Download PDFInfo
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- CN219431829U CN219431829U CN202320097563.1U CN202320097563U CN219431829U CN 219431829 U CN219431829 U CN 219431829U CN 202320097563 U CN202320097563 U CN 202320097563U CN 219431829 U CN219431829 U CN 219431829U
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Abstract
The utility model belongs to the technical field of tunnel equipment, and particularly relates to a three-arm rock drilling trolley water system suitable for a plateau extreme environment, which comprises a water inlet pipeline, a water pump, three water outlet pipelines, a gas blowing water pipeline and an air conditioner and air compressor cooling pipeline; the inlet of the water inlet pipeline is externally connected with a water source, the outlet of the water inlet pipeline is connected with the water inlet of the water pump, one way of the water outlet of the water pump is connected with three rock drills after passing through three water outlet pipelines, the other way of the water outlet of the water pump is connected with the input side of the air conditioner and the cooling pipeline of the air compressor, the output side of the cooling pipeline of the air conditioner and the cooling pipeline of the air compressor is connected to a pipeline between the water pump and the water inlet pipeline, and the air blowing water pipeline is also connected to a pipeline between the water pump and the water inlet pipeline. The utility model solves the problems of frequent start and stop of a water pump of a water system of a drilling jumbo, icing of the water system in a high-cold environment and high-temperature alarm and stop of an air conditioner and an air compressor in a high-geothermal environment in the prior art.
Description
Technical Field
The utility model belongs to the technical field of tunnel equipment, and particularly relates to a three-arm rock drilling trolley water system suitable for a plateau extreme environment.
Background
The drilling trolley is a drilling device for tunnel and underground engineering construction by using drilling and blasting method. The device mainly comprises a chassis, a drill boom, a service platform, a rock drill, an electric system, a hydraulic system, a water system, an aerosol lubrication system and the like. The main function of the water system of the drilling trolley is to flush rock residues at the bottom of a hole in the drilling process, so as to prevent the drill bit from being blocked; dust is eliminated, and harm of dust pollution to operators is reduced; the cooling rock drill, the drill bit, the drill rod and the hydraulic system, so that the normal operation of the water system is critical to the construction of the whole rock drilling trolley. The current three-arm rock drilling trolley water system is as follows: the construction site provides an external water source for the drilling jumbo, and a pressure switch is arranged at the water inlet of the water pump to monitor the water inlet pressure of the external water source and serve as the basis for starting and stopping the water pump. When the pressure switch detects that the water inlet pressure meets the requirement, the water pump can be started normally, and then the high-pressure water pressurized by the water pump supplies water for three rock drills through three water valves; when the pressure switch detects that the water inlet pressure is too low, the water supply is insufficient, and the water pump is stopped at the moment, so that the water pump is protected. However, due to the fact that the working conditions in the tunnel are complex, the water supply pressure is severe, the water pump is started and stopped frequently, normal construction is affected, and the water pump is damaged seriously.
Meanwhile, the prior art has no special design aiming at extreme environments such as high and cold in the highland, high and geothermal heat and the like. Under the severe cold environment, if the water system of the drilling jumbo is not provided with a water draining function, residual water in the water system cannot be discharged cleanly and frozen after the construction of the drilling jumbo is completed, if the water system is light, a pipeline is blocked, and if the water system is severe, components such as a pipeline joint, a water pump, a rock drill and the like are frozen and cracked; under the high geothermal environment, air conditioner and air compressor machine that the drill jumbo disposes are forced air cooling, and when the ambient temperature was higher than 50 ℃ in the tunnel, air conditioner and air compressor machine can be stopped because unable abundant cooling and high temperature warning, finally lead to the unable normal construction of drill jumbo. Therefore, it is important to design a three-arm drill jumbo water system which is suitable for extreme environments such as high and cold in the plateau, high and geothermal heat.
Disclosure of Invention
In order to solve the problems of frequent start and stop of a water pump of a drilling trolley water system, icing of the water system in a high-cold environment and high-temperature alarm and stop of an air conditioner and an air compressor in a high-geothermal environment in the prior art, the utility model provides a three-arm drilling trolley water system suitable for a plateau extreme environment, and the three-arm drilling trolley is ensured to work stably and reliably in the plateau extreme environment.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides a three-arm rock drilling trolley water system adapting to a plateau extreme environment, which comprises a water inlet pipeline, a water pump, three water outlet pipelines, a gas blowing water pipeline and an air conditioner and air compressor cooling pipeline, wherein the water inlet pipeline is connected with the water pump; the inlet of the water inlet pipeline is externally connected with a water source, the outlet of the water inlet pipeline is connected with the water inlet of the water pump, one way of the water outlet of the water pump is connected with three rock drills after passing through three water outlet pipelines, the other way of the water outlet of the water pump is connected with the input side of the air conditioner and the cooling pipeline of the air compressor, the output side of the cooling pipeline of the air conditioner and the cooling pipeline of the air compressor is connected to a pipeline between the water pump and the water inlet pipeline, and the air blowing water pipeline is also connected to a pipeline between the water pump and the water inlet pipeline.
Further, the water inlet pipeline comprises a first manual ball valve, a water filter, a water inlet pressure reducing valve and a hydraulic oil water-cooling radiator which are sequentially connected according to the water inlet direction, and the hydraulic oil water-cooling radiator is connected with a water inlet of a water pump through a pipeline.
Further, a drain valve is installed at the drain outlet of the water filter.
Further, the water outlet of the water pump is connected with three water outlet pipelines through a water outlet safety valve.
Further, each water outlet pipeline comprises a first electromagnetic valve, a flow sensor and a first one-way valve which are sequentially connected according to the water outlet direction of the water pump, and the first one-way valve is connected with the rock drill through a pipeline.
Further, the air-blowing water pipeline comprises an air storage tank, a second electromagnetic valve and a second one-way valve which are sequentially connected according to the air outlet direction, and the second one-way valve is connected to a pipeline between the hydraulic oil water-cooling radiator and the water pump.
Further, the air conditioner and air compressor cooling pipeline comprises a pressure reducing valve, and the input side of the pressure reducing valve is connected to a water outlet pipeline of the water pump; one path of the output side of the pressure reducing valve is sequentially connected with the air conditioner water-cooling radiator and a first interface of a three-way ball valve I according to the water inlet direction, a second interface of the three-way ball valve I is connected to a pipeline between the hydraulic oil water-cooling radiator and the water pump, and a third interface of the three-way ball valve I is communicated with the atmosphere; the other path of the output side of the pressure reducing valve is sequentially connected with the water-cooling radiator of the air compressor and the first interface of the three-way ball valve II according to the water inlet direction, the second interface of the three-way ball valve II is connected to a pipeline between the hydraulic oil water-cooling radiator and the water pump, and the third interface of the three-way ball valve II is communicated with the atmosphere.
Further, a water inlet of the water pump is provided with a second manual ball valve, and a water outlet of the water pump is provided with a third manual ball valve.
Compared with the prior art, the utility model has the following advantages:
1. the three-arm rock drill trolley water system adapting to the plateau extreme environment uses the water flow to control the start and stop of the water pump, so that the problem that the water pump is started and stopped frequently due to the pressure fluctuation of water supply pressure is solved, the water pump is protected from being damaged by suction due to insufficient water supply, and meanwhile, three water outlet pipelines can work independently and are not interfered with each other.
2. The utility model fully satisfies the functions of flushing and dust removal required by the three-arm rock drilling trolley in the drilling process, cooling the rock drill, the drill bit, the drill rod, the hydraulic system and the like. To the high and cold environment, the water system is additionally provided with an air-blowing water pipeline, and the air-blowing water pipeline blows the residual water in the water inlet pipeline, the water outlet pipeline, the air conditioner and air compressor cooling pipeline, the water pump and the rock drill clean through compressed air, so that the problems of ice formation, pipeline blockage and freezing damage of elements of the water system in the high and cold environment are solved.
3. The utility model adopts a water cooling mode to cool the air conditioner and the air compressor, thereby ensuring that the air conditioner and the air compressor can work stably and reliably in a high geothermal environment.
Drawings
Fig. 1 is a schematic structural view of a three-arm drill jumbo water system adapted to the extreme environment of a plateau according to an embodiment of the present utility model.
The meaning represented by the numbers in the figures is:
1. the hydraulic valve comprises a manual ball valve I, a water filter I, a water inlet pressure reducing valve 3, a hydraulic oil water cooling radiator 4, a blow-down valve 6, a water pump 7, a solenoid valve I, a flow sensor 8, a one-way valve I, a rock drill 10, a gas storage tank 11, a solenoid valve II, a one-way valve II, a pressure reducing valve 14, a pressure reducing valve 15, an air conditioning water cooling radiator 16, a three-way ball valve I, a three-way ball valve 17, an air compressor water cooling radiator 18, a three-way ball valve II, a manual ball valve 19, a manual ball valve II, a manual ball valve III and a water outlet safety valve 21.
Detailed Description
In order to make the technical solution of the present utility model better understood by those skilled in the art, the technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments.
In order to solve the problems of frequent start and stop of a water pump of a water system of a drilling jumbo in the prior art, freezing of the water system in a high-cold environment and high-temperature alarm shutdown of an air conditioner and an air compressor in a high-geothermal environment, as shown in fig. 1, the embodiment provides a three-arm drilling jumbo water system adapting to the extreme environment of a plateau, wherein the water system comprises a water inlet pipeline, a water pump 6, three water outlet pipelines, an air-blowing water pipeline and air conditioner and air compressor cooling pipelines. The inlet of the water inlet pipeline is externally connected with a water source, the outlet of the water inlet pipeline is connected with the water inlet of the water pump 6, one way of the water outlet of the water pump 6 is connected with three rock drills 10 after passing through three water outlet pipelines, the other way of the water outlet of the water pump 6 is connected with the input side of the air conditioner and air compressor cooling pipeline, the output side of the air conditioner and air compressor cooling pipeline is connected to a pipeline between the water pump 6 and the water inlet pipeline, and the air blowing water pipeline is also connected to a pipeline between the water pump 6 and the water inlet pipeline. The external water source flows into the water pump 6 through the water inlet pipeline, after the water pump 6 is started, water is pressurized and then is supplied to the rock drill 10 through the water outlet pipeline, the external water source is used for dedusting, flushing rock residues, cooling the rock drill 10, the drill bit, the drill rod and the hydraulic system, meanwhile, the water pressurized by the water pump 6 is led to the cooling pipeline of the air conditioner and the air compressor, and the air conditioner and the air compressor are cooled in a water cooling mode. The air-blowing water pipeline is connected to the water inlet of the water pump 6, and after the drilling operation is completed by the drilling trolley, the air-blowing water pipeline dries residual water in the clean water inlet pipeline, the water outlet pipeline, the air conditioner and air compressor cooling pipeline, the water pump 6 and the rock drill 10 by compressed air. The water inlet pipeline, the water outlet pipeline, the air-blowing pipeline and the cooling pipeline of the air conditioner and the air compressor are explained in detail below.
The water inlet pipeline comprises a manual ball valve 1, a water filter 2, a water inlet pressure reducing valve 3 and a hydraulic oil water-cooling radiator 4 which are sequentially connected according to the water inlet direction, wherein the hydraulic oil water-cooling radiator 4 is connected with a water inlet of a water pump 6 through a pipeline. The first manual ball valve 1 is used for controlling the on-off of water inflow; the water filter 2 is used for filtering impurities in the water, a drain outlet of the water filter 2 is provided with a drain valve 5 for discharging impurities in the water filter 2, and the drain valve 5 is always in a closed state when no drain is performed; the water inlet pressure reducing valve 3 ensures that the water inlet pressure does not exceed the allowable pressure of the water inlet of the water pump 6, and prevents the water pump 6 from being damaged due to the overhigh water inlet pressure; the hydraulic oil water-cooling radiator 4 functions to cool the hydraulic oil by using the inflow water.
The water outlet of the water pump 6 is connected with three water outlet pipelines through a water outlet safety valve 21, and each water outlet pipeline comprises a first electromagnetic valve 7, a flow sensor 8 and a first one-way valve 9 which are sequentially connected according to the water outlet direction of the water pump, and the first one-way valve 9 is connected with the rock drill 10 through a pipeline. Wherein the water outlet safety valve 21 ensures that the pressure of the water after the water pump is pressurized will not damage the sealing of the rock drill 10 due to too high pressure; the electromagnetic valve I7 is used for controlling the on-off of the water flow to the rock drill 10; the flow sensor 8 is used for controlling the start and stop of the water pump 6; the check valve 9 prevents the water from flowing backwards to damage the flow sensor 8, and also prevents the flow sensor 8 from missignaling to control the water pump 6 to start when the water flows backwards. The example has three water outlet lines which supply water to three rock drills 10 on three drill booms of a three-arm drill jumbo, respectively, which can be controlled individually by means of respective solenoid valves 7. The three solenoid valves 7 are normally closed, that is, when the solenoid valves 7 are powered off, water cannot pass through, and when the solenoid valves 7 are powered on, water can pass through.
The air-blowing water pipeline comprises an air storage tank 11, a second electromagnetic valve 12 and a second check valve 13 which are sequentially connected according to the air outlet direction, and the second check valve 13 is connected to a pipeline between the hydraulic oil water-cooling radiator 4 and the water pump 6. Wherein the air storage tank 11 provides an air source for air-blown water; the second electromagnetic valve 12 controls the on-off of the compressed air; the second check valve 13 prevents water from flowing back into the air tank 11.
The cooling pipeline of the air conditioner and the air compressor comprises a pressure reducing valve 14, and the input side of the pressure reducing valve 14 is connected to the water outlet pipeline of the water pump 6; one path of the output side of the pressure reducing valve 14 is sequentially connected with a first interface of the air-conditioner water-cooling radiator 15 and a first three-way ball valve 16 in the water inlet direction, a second interface of the first three-way ball valve 16 is connected to a pipeline between the hydraulic oil water-cooling radiator 4 and the water pump 6, and a third interface of the first three-way ball valve 16 is communicated with the atmosphere; the other path of the output side of the pressure reducing valve 14 is sequentially connected with a first interface of the air compressor water-cooling radiator 17 and a second three-way ball valve 18 according to the water inlet direction, a second interface of the second three-way ball valve 18 is connected to a pipeline between the hydraulic oil water-cooling radiator 4 and the water pump 6, and a third interface of the second three-way ball valve 18 is communicated with the atmosphere. The pressure reducing valve 14 is used for reducing pressure of high-pressure water after the water pump 6 is pressurized and leading the high-pressure water to the air conditioner water-cooling radiator 15 and the air compressor water-cooling radiator 17, so that the water pressure is prevented from being too high to damage the water-cooling radiator. The air-conditioner water-cooling radiator 15 and the air-compressor water-cooling radiator 17 cool the air-conditioner and the air-compressor sufficiently by water flowing through the inside thereof; the three-way ball valve I16 (or the three-way ball valve II 18) is provided with three interfaces, the first interface is connected with the air-conditioner water-cooling radiator 15 (or the air compressor water-cooling radiator 17), the second interface is communicated with the water inlet of the water pump 6, and the third interface is communicated with the atmosphere, so that the three-way ball valve I16 (or the three-way ball valve II 18) is provided with two working positions, water from the air-conditioner water-cooling radiator 15 (or the air compressor water-cooling radiator 17) flows to the water inlet of the water pump 6 through the first interface and the second interface in normal operation, the handle of the three-way ball valve I16 (or the three-way ball valve II 18) is rotated in air blowing, and the water from the air-conditioner water-cooling radiator 15 (or the air compressor water-cooling radiator 17) flows out of the pipeline through the first interface and the third interface to the atmosphere.
Preferably, the water inlet of the water pump 6 is provided with a second manual ball valve 19, and the water outlet of the water pump 6 is provided with a third manual ball valve 20. After the air blowing water is finished, the manual ball valve II 19 and the manual ball valve III 20 are opened, so that the residual water is conveniently discharged out of the system through the two manual ball valves, the residual water is prevented from accumulating and icing to block the pipeline, and the two manual ball valves are required to be closed before the next use of the drilling trolley.
The working principle is as follows:
when the external water source is connected to the water inlet pipeline, the manual ball valve 1 on the water inlet pipeline is opened, and the external water sequentially passes through the manual ball valve 1, the water filter 2, the water inlet pressure reducing valve 3, the hydraulic oil water cooling radiator 4, the water pump 6 and the water outlet safety valve 21 to reach the front of the three electromagnetic valves 7. In this process, the high-temperature hydraulic oil and cold water exchange heat in the hydraulic oil water-cooling radiator 4, thereby reducing the temperature of the hydraulic oil and realizing cooling of the hydraulic system. After the first electromagnetic valve 7 is powered on, external water can flow to the flow sensor 8 through the first electromagnetic valve 7. When the water flow flowing through the flow sensor 8 reaches the set value, the water supply flow is sufficient, and the flow sensor 8 sends out a signal to control the water pump 6 to start; otherwise, the water supply flow is insufficient, and the water pump 6 is not started, so that the water pump 6 is protected from being damaged due to suction. When the water flow reaches the set value of any one of the three flow sensors 8, the water pump 6 can be started; after the water pump 6 is started, water continuously flows to the rock drill 10 through the water outlet pipeline after being pressurized by the water pump 6, and the rock drill 10, the drill bit and the drill rod are cooled, and dust removal and slag flushing are performed simultaneously. The water after the water pump 6 is pressurized also flows to the cooling pipeline of the air conditioner and the air compressor, so long as the temperature of the external water is not high, the air conditioner and the air compressor can be fully cooled under the high geothermal environment, and the normal work is ensured. This process also ensures that the flow of water through the flow sensor 8 will always reach its set point, so that the pump 6 will continue to operate. Only when the water supply is insufficient or the three electromagnetic valves are all closed, the water pump 6 can be stopped when the flow rate of the water flowing through the three flow sensors 8 cannot reach the set value, so that the problem that the water pump 6 is frequently started and stopped due to the water supply pressure fluctuation in the prior art is solved.
After the three-arm drilling jumbo finishes drilling operation, the first electromagnetic valve 7 is closed, and as the flow rate of water flowing through the three flow sensors 8 cannot reach the set value, the water pump 6 is stopped, then the first manual ball valve 1 is required to be closed, and the external water pipe is dismantled to cut off an external water source. At this time, a large amount of water still remains in the water system, and under the high and cold environment of the plateau, the residual water can freeze to block the pipeline, and even the components such as the water pump 6, the rock drill 10, the water cooling radiator and the like are frosted, so that the air-blowing water operation is required at this time, and the specific operation steps are as follows:
step 1, a first manual ball valve 1 of a water inlet pipeline is opened, three first electromagnetic valves 7 of a water outlet pipeline are closed, then a second electromagnetic valve 12 of a gas blowing pipeline is started, compressed air can flow through the second electromagnetic valve 12 and a second one-way valve 13 from a gas storage tank 11, and residual water in the water inlet pipeline is discharged from the first manual ball valve 1.
And 2, closing a manual ball valve I1 of a water inlet pipeline and three electromagnetic valves I7 of a water outlet pipeline, rotating a three-way ball valve I16 and a three-way ball valve II 18 on a cooling pipeline of the air conditioner and the air compressor to a working position leading to the atmosphere, enabling compressed air to flow through a water pump 6, discharging residual water in the cooling pipeline of the air conditioner and the air compressor from the two three-way ball valves, and recovering the three-way ball valves to a normal working position after water is discharged.
And 3, opening the three solenoid valves 7, and discharging the residual water in the water outlet pipeline from the rock drill 10 by the compressed air flowing through the water pump 6.
The steps are repeated for a plurality of times to finish the drainage of the whole water system. After the air blowing water is finished, the manual ball valves II 19 and III 20 at the two ends of the water pump 6 are opened, so that the residual water is conveniently discharged out of the system through the two manual ball valves, and the residual water is prevented from being accumulated and frozen to block the pipeline.
The three-arm rock drill jumbo water system adapting to the plateau extreme environment of the embodiment is started and stopped through the water flow control water pump 6, so that the problem that the water pump 6 is started and stopped frequently due to water supply pressure fluctuation is solved, the water pump 6 is protected from being damaged by air suction due to insufficient water supply, and meanwhile, three water outlet pipelines can work independently and are not interfered with each other. Aiming at the high and cold environment, the water system is additionally provided with the air-blowing water pipeline, so that the problems of ice formation, pipeline blockage and frost damage of elements of the water system in the high and cold environment are solved. And the air conditioner and the air compressor are cooled by adopting a water cooling mode, so that the air conditioner and the air compressor can work stably and reliably in a high geothermal environment.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs. The use of the terms "a" or "an" and the like in the description and in the claims does not necessarily imply a limitation on the amount. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and is not intended to limit the scope of the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model are included in the protection scope of the present utility model.
Claims (8)
1. The three-arm drill jumbo water system suitable for the extreme environment of the plateau is characterized by comprising a water inlet pipeline, a water pump, three water outlet pipelines, a gas blowing water pipeline and an air conditioner and air compressor cooling pipeline; the inlet of the water inlet pipeline is externally connected with a water source, the outlet of the water inlet pipeline is connected with the water inlet of the water pump, one way of the water outlet of the water pump is connected with three rock drills after passing through three water outlet pipelines, the other way of the water outlet of the water pump is connected with the input side of the air conditioner and the cooling pipeline of the air compressor, the output side of the cooling pipeline of the air conditioner and the cooling pipeline of the air compressor is connected to a pipeline between the water pump and the water inlet pipeline, and the air blowing water pipeline is also connected to a pipeline between the water pump and the water inlet pipeline.
2. The three-arm drill jumbo water system adapted to the extreme environment of the altitude according to claim 1, wherein the water inlet pipeline comprises a manual ball valve one, a water filter, a water inlet pressure reducing valve and a hydraulic oil water cooling radiator which are sequentially connected according to the water inlet direction, and the hydraulic oil water cooling radiator is connected with the water inlet of the water pump through a pipeline.
3. The three arm drill jumbo water system adapted to the extreme conditions of the altitude according to claim 2, characterized in that the drain of the water filter is fitted with a drain valve.
4. The three-arm drill jumbo water system adapted to the extreme conditions of the plateau of claim 1, wherein the water outlet of the water pump is connected to three water outlet pipes through a water outlet safety valve.
5. The three arm drill jumbo water system adapted to the extreme conditions of the altitude according to claim 4, wherein each water outlet pipe comprises a first electromagnetic valve, a flow sensor and a first check valve which are connected in turn according to the water outlet direction of the water pump, and the first check valve is connected with the rock drill through a pipe.
6. The three-arm drill jumbo water system adapted to the extreme environment of the plateau of claim 2, wherein the air-blowing water pipeline comprises an air storage tank, a second electromagnetic valve and a second one-way valve which are sequentially connected according to the air outlet direction, and the second one-way valve is connected to a pipeline between the hydraulic oil water-cooling radiator and the water pump.
7. The three arm drill jumbo water system adapted to the extreme conditions of the altitude according to claim 2, wherein the air conditioner and air compressor cooling line comprises a pressure reducing valve, the input side of the pressure reducing valve being connected to the water pump water outlet pipe; one path of the output side of the pressure reducing valve is sequentially connected with the air conditioner water-cooling radiator and a first interface of a three-way ball valve I according to the water inlet direction, a second interface of the three-way ball valve I is connected to a pipeline between the hydraulic oil water-cooling radiator and the water pump, and a third interface of the three-way ball valve I is communicated with the atmosphere; the other path of the output side of the pressure reducing valve is sequentially connected with the water-cooling radiator of the air compressor and the first interface of the three-way ball valve II according to the water inlet direction, the second interface of the three-way ball valve II is connected to a pipeline between the hydraulic oil water-cooling radiator and the water pump, and the third interface of the three-way ball valve II is communicated with the atmosphere.
8. The three-arm drill jumbo water system adapted to the extreme environment of the plateau of claim 1, wherein the water inlet of the water pump is provided with a manual ball valve two, and the water outlet of the water pump is provided with a manual ball valve three.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320097563.1U CN219431829U (en) | 2023-02-01 | 2023-02-01 | Three-arm drill jumbo water system suitable for extreme environments of plateau |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320097563.1U CN219431829U (en) | 2023-02-01 | 2023-02-01 | Three-arm drill jumbo water system suitable for extreme environments of plateau |
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| CN219431829U true CN219431829U (en) | 2023-07-28 |
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| CN202320097563.1U Active CN219431829U (en) | 2023-02-01 | 2023-02-01 | Three-arm drill jumbo water system suitable for extreme environments of plateau |
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