CN205298110U - Hydraulic pressure rock drilling machine's self -adaptation valves - Google Patents
Hydraulic pressure rock drilling machine's self -adaptation valves Download PDFInfo
- Publication number
- CN205298110U CN205298110U CN201521024823.4U CN201521024823U CN205298110U CN 205298110 U CN205298110 U CN 205298110U CN 201521024823 U CN201521024823 U CN 201521024823U CN 205298110 U CN205298110 U CN 205298110U
- Authority
- CN
- China
- Prior art keywords
- oil
- valve
- pilot operated
- operated directional
- directional control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model discloses a hydraulic pressure rock drilling machine's self -adaptation valves, include: two actuator port of first pilot operated directional control valve respectively through the propulsion oil circuit that corresponds and the propulsion hydraulic fluid port that lifts oil circuit and this valves with the hydraulic fluid port intercommunication lifts, the propulsion end liquid accuse of first pilot operated directional control valve mouthful with lift end liquid accuse mouth respectively with the propulsion guide hydraulic fluid port of valves with guide's hydraulic fluid port intercommunication lifts, the oil inlet of second pilot operated directional control valve and the main oil inlet of this valves intercommunication, its oil -out feeds through with a first pilot operated directional control valve and a logic valve's oil inlet, shuttle valve, its two oil inlet respectively with advance the oil circuit and lift the oil circuit intercommunication, its oil -out and a logic valve's liquid accuse mouthful feeds through, a logic valve, a logic valve's oil -out and the oil inlet of third pilot operated directional control valve intercommunication, the third pilot operated directional control valve, the liquid accuse mouth of this third pilot operated directional control valve and the impact guide hydraulic fluid port intercommunication of valves, the impact oil circuit of its oil -out and valves exports the oil return opening intercommunication of intercommunication, its oil return opening and valves. The utility model discloses a to the automatic control that integrates who feeds with strike.
Description
Technical field
This utility model relates to engineering machinery field, is specially a kind of feeding to hydraulic rock drilling machine and impacts the self adaptation valve group automatically controlled.
Background technology
The working condition of hydraulic rock drilling machine is severe, it is necessary to tackle different Rock Species and hardness, adapts in rock stratum the complicated geological situations such as solution cavity, crack, interlayer. The all-hydraulic rock drilling machine of top hammer formula on the market, in order to realize the performance of excellence under complicated geological situation, being provided with the automatic control function of complexity, each executive component is controlled by controlling valve accordingly mostly, it is attached by hydraulic tube again, makes an organic whole. This control system, controls valve member many, and between valve with valve, corresponding pipeline is complicated, and stringing difficulty is big, and leakage point is many, and after ageing equipment, maintenance difficulties is big, cost. And for partial domestic rig, although simple in construction, Hydraulic Elements are less, but corresponding indispensable automatic control function disappearance, cause handling difference, drilling tool consumes height, adds the use cost of user. Owing to hydraulic control technology is the core technology of top hammer formula hydraulic rock drilling machine, optimization system designs, optimizing the coupling of hydraulic valve and system performance, improve Hydraulic System Reliability, the innovation carrying out hydraulic control technology can improve the level of development of domestic rock drilling machine.
Summary of the invention
The purpose of this utility model is in that to provide the self adaptation valve group of a kind of hydraulic rock drilling machine, it is achieved feeding and the integrated of impact are automatically controlled.
The self adaptation valve group of hydraulic rock drilling machine described in the utility model, including the first pilot operated directional control valve, two actuator ports of this first pilot operated directional control valve advance oil circuit respectively through corresponding and lift up the propelling hydraulic fluid port of oil circuit and this valve group and lift up hydraulic fluid port and connect, the propelling end hydraulic control mouth of the first pilot operated directional control valve with lift up hold hydraulic control mouth respectively with propelling guide's hydraulic fluid port of valve group and lift up guide's hydraulic fluid port and connect; Second pilot operated directional control valve, its oil-in connects with the main oil-in of this valve group, the oil-in connection of its oil-out and the first pilot operated directional control valve and the first logical valve; Shuttle valve, its two oil-in respectively with advance oil circuit and lift up oil communication, the hydraulic control mouth of its oil-out and the first logical valve connects; First logical valve, the oil-out of this first logical valve and the oil-in connection of the 3rd pilot operated directional control valve; 3rd pilot operated directional control valve, the hydraulic control mouth of the 3rd pilot operated directional control valve connects with impact guide's hydraulic fluid port of valve group, and the impact oil circuit outlet of its oil-out and valve group, its oil return opening connects with the oil return opening of valve group.
Preferably, also include the first damping hole, the oil-out of this first damping hole and the oil-in connection of the first pilot operated directional control valve, described second pilot operated directional control valve has the first and second oil-outs, the oil-in of its first oil-out and the first damping hole and the oil-in connection of the first logical valve, its second oil-out walks around the oil-in connection of the first damping hole and the first pilot operated directional control valve, and the hydraulic control mouth of this second pilot operated directional control valve connects with the fast feed hydraulic control hydraulic fluid port of valve group.
Preferably, also include the 4th pilot operated directional control valve and flow control valve, the oil-in of described 4th pilot operated directional control valve and the first oil-out connection of the second pilot operated directional control valve, first oil-out of the 4th pilot operated directional control valve and the oil-in connection of the first damping hole, second oil-out of the 4th pilot operated directional control valve connects with the oil-in of flow control valve, the hydraulic control mouth of the 4th pilot operated directional control valve connects with the bar feed hydraulic control hydraulic fluid port that changes of valve group, and the oil-out of described flow control valve and the oil-in of the first pilot operated directional control valve connect.
Preferably, also include the 5th pilot operated directional control valve and the first overflow valve, the oil-in of described 5th pilot operated directional control valve and the impact oil circuit outlet of valve group, the oil-in connection of its oil-out and the first overflow valve, the hydraulic control mouth of the 5th pilot operated directional control valve is connected with the propelling hydraulic fluid port of valve group, and the oil-out of described first overflow valve connects with the oil return opening of valve group.
Preferably, also including the first sequence valve, its oil-in connects with the propelling hydraulic fluid port of valve group, and its oil-out connects with the hydraulic control mouth of described 5th pilot operated directional control valve, when the pressure of described propelling hydraulic fluid port is more than the setting pressure of the first sequence valve, the first sequence valve action makes its oil-in and oil-out conducting.
Preferably, also include the second logical valve and the second damping hole, described second damping hole is located between the oil-in of the 5th pilot operated directional control valve and the impact oil circuit outlet of valve group, the oil-in of the second logical valve and impact oil circuit outlet, its oil-out connects with the oil return opening of valve group, described second logical valve has the working position of oil inlet and outlet cut-off, the hydraulic control mouth of this working position and the oil-out connection of the second damping hole, described second logical valve also has the working position of oil inlet and outlet conducting, the hydraulic control mouth of this working position is connected with the oil-in of this second logical valve by valve core inside guide's oil circuit duct.
Preferably, also including draining logic element, the oil-in of this draining logic element advances hydraulic fluid port to connect with valve group, and the oil-out of draining logic element connects with valve group oil return opening, and the hydraulic control mouth of draining logic element regulates hydraulic fluid port with the propelling pressure of valve group and connects.
Preferably, also including the 6th reversal valve, the impact oil circuit outlet of the oil-in of the 6th reversal valve and valve group, its oil-out connects with the anti-way outlet of buying oil of valve group.
Preferably, also including check valve, it is located between the oil return opening of the first pilot operated directional control valve and valve group.
Preferably, also including the 3rd damping hole, it is located between the oil-out of shuttle valve and the hydraulic control mouth of the first logical valve.
This valve group will be impacted and feed function is integrated, compact conformation, and Hydraulic Elements are few, and pipeline connects few. Possess propelling pressure remote control and regulation function, kelly and lift up impact and automatically weaken function, for perforate and cavity, rock stratum, there is impact automatic control function, boring advances feeding flow to separate with bar feed flow of unloading, it is ensured that smooth and easy change bar.
Accompanying drawing explanation
Fig. 1 is hydraulic schematic diagram of the present utility model.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in further detail, and following example are only used for explaining this utility model, are not intended that the restriction to this utility model protection domain.
The self adaptation valve group of hydraulic rock drilling machine as shown in Figure 1 is made up of feed function and impact function two large divisions.
Feed function part includes first pilot operated directional control valve the 1, second pilot operated directional control valve the 2, the 4th pilot operated directional control valve 4, flow control valve the 6, first damping hole 5, shuttle valve 3, check valve 7, pressure release logic element 8.
The wherein said oil-in of the second pilot operated directional control valve 2 connects with the main oil inlet P of this valve group, described second pilot operated directional control valve 2 has the first and second oil-outs, the oil-in of its first oil-out and the first logical valve 11 and the oil-in connection of the 4th pilot operated directional control valve 4, its second oil-out is walked around the 4th pilot operated directional control valve 4 and is connected with the oil-in of the first damping hole 5 with the first pilot operated directional control valve 1, and the hydraulic control mouth of this second pilot operated directional control valve 2 connects with the fast feed hydraulic control hydraulic fluid port X5 of valve group.
The oil-in of described 4th pilot operated directional control valve 4 and the first oil-out connection of the second pilot operated directional control valve, first oil-out of the 4th pilot operated directional control valve and the oil-in connection of the first damping hole 5, second oil-out of the 4th pilot operated directional control valve connects with the oil-in of flow control valve 6, and the hydraulic control mouth of the 4th pilot operated directional control valve 4 connects with the bar feed hydraulic control hydraulic fluid port X6 that changes of valve group.
The oil-out of described flow control valve 6 and the oil-in connection of the first pilot operated directional control valve 1.
Two actuator ports of described first pilot operated directional control valve 1 advance oil circuit respectively through corresponding and lift up the propelling hydraulic fluid port A1 of oil circuit and this valve group and lift up hydraulic fluid port B1 and connect, the propelling end hydraulic control mouth of the first pilot operated directional control valve with lift up hold hydraulic control mouth respectively with the propelling guide hydraulic fluid port X1 of valve group and lift up guide hydraulic fluid port X2 and connect. Wherein, advance and lift up the feed motion constituting rock drill. Due to feed system employing is that inner curve piston motor advances catenary system, in order to improve motor life, has installed check valve 7 additional and use as counterbalance valve between the oil return opening of this first pilot operated directional control valve and the oil return inlet T of valve group.
Two oil-ins of described shuttle valve 3 respectively with advance oil circuit and lift up oil communication, its oil-out connects through the second filter 9 hydraulic control mouth blocking working position with the first logical valve 11 after the 3rd damping hole 10.
The oil-out of described shuttle valve 3 also connects with the feed pressure table interface M1 of this valve group, and this feed pressure table interface is used for external feed pressure table.
The oil-in of described draining logic element 8 advances hydraulic fluid port to connect with valve group, and the oil-out of draining logic element connects with valve group oil return inlet T, and the hydraulic control mouth of draining logic element regulates hydraulic fluid port Y1 with the propelling pressure of valve group and connects. The pressure oil being regulated the draining logic element that hydraulic fluid port flows out by this propelling pressure is remotely adjusted by driver, sets up propelling oil circuit pressure by adjusting the opening and closing degree of this draining logic element.
Impact function part includes first logical valve the 11, second logical valve the 16, the 3rd pilot operated directional control valve the 12, the 5th pilot operated directional control valve the 14, the 6th solenoid directional control valve the 19, first overflow valve the 15, first sequence valve the 13, second damping hole the 17, the 3rd damping hole the 10, first filter the 18, second filter 9.
The oil-in of described first logical valve 11 and the first oil-out connection of the second pilot operated directional control valve 2, the oil-in connection of oil-out and the 3rd pilot operated directional control valve 12. This first logical valve has an ON operation position that oil inlet and outlet communicates and oil inlet and outlet disconnects blocks working position, its hydraulic control mouth blocking working position connects with shuttle valve 3 oil-out and has return spring, and its ON operation position is connected by the oil-in of guide's oil circuit and the first logical valve.
The hydraulic control mouth of described 3rd pilot operated directional control valve 12 connects with the impact guide hydraulic fluid port X7 of valve group, and its oil-out exports C with the impact oil circuit of valve group and connects, and its oil return opening connects with the oil return inlet T of valve group.
The oil-in of described first sequence valve 13 connects with the propelling hydraulic fluid port A1 of valve group, and its oil-out connects with the hydraulic control mouth of described 5th pilot operated directional control valve 14, and its oil return opening connects with the drain tap L of valve group.When the pressure of described propelling hydraulic fluid port A1 is more than the setting pressure of the first sequence valve 13, pilot pressure acts on its hydraulic control end, drives the first sequence valve 13 action to make its oil-in and oil-out conducting.
The oil-in of described 5th pilot operated directional control valve 14 exports C with the first filter 18 with the impact oil circuit of valve group through the second damping hole 17 and connects, the oil-in connection of its oil-out and the first overflow valve 15.
The described oil-out of the first overflow valve 15 connects with the drain tap L of valve group.
The oil-in of the second logical valve 16 connects with impacting oil circuit outlet C, its oil-out connects with the oil return inlet T of valve group, described second logical valve 16 has the working position of oil inlet and outlet cut-off, this working position has the oil-out connection of return spring and its hydraulic control mouth and the second damping hole 17, described second logical valve also has the working position of oil inlet and outlet conducting, and the hydraulic control mouth of this working position is connected with the oil-in of this second logical valve by valve core inside guide's oil circuit duct.
The surge table interface M3 of valve group connects with impacting oil circuit outlet C, for external surge table.
The oil-in of described 6th solenoid directional control valve 19 exports C with the impact oil circuit of valve group and connects, and its oil-out connects with the anti-way outlet D that buys oil of valve group, and its oil return opening connects with the oil return inlet T of valve group. Described 6th solenoid directional control valve is for being controlled counter the beating of rock drill, when lifting up action with impact function unlatching, open the 6th solenoid directional control valve, pressure oil just enters rock drill Fan Da mechanism through its oil-out by valve group the anti-way outlet D that buys oil, it is possible to help drilling rod to extract smoothly from hole. When the 6th solenoid directional control valve no power, anti-road of buying oil is by the logical valve group oil return inlet T of this reversal valve, it is ensured that counter beat institution secure.
The operation principle of above-mentioned valve group is:
Second pilot operated directional control valve 2 mainly carries out the conversion of feeding or feeding+impact and fast feed. When impacting guide's hydraulic fluid port and there is no signal oil, it is achieved feed function at a slow speed. Pressure oil enters from main oil inlet P, enters the first pilot operated directional control valve 1 through second pilot operated directional control valve the first oil-out, the 4th pilot operated directional control valve the first oil-out and the first damping hole 5. If now the first liquid controlled reversing is in and is not turned on, pressure oil is then pushed the first logical valve spool open and is turned it on, and pressure oil causes the oil return inlet T oil return of valve group through the 3rd pilot operated directional control valve 12. If at this moment the first pilot operated directional control valve 1 is opened, it is feeding working connection (namely advance oil circuit and lift up oil circuit) pressure that first logical valve blocks the pressure of working position hydraulic control mouth, first logical valve 11 makes excess traffic through the 3rd pilot operated directional control valve 12 oil return, maintains feed system stability of flow together with the first damping hole.
When impacting guide hydraulic fluid port X7 and having signal oil, it is achieved feeding and impact function at a slow speed. At this moment pressure oil enters from main oil inlet P, enters feeding working connection through the second pilot operated directional control valve, the 4th pilot operated directional control valve, the first damping hole and the first pilot operated directional control valve. Owing to feeding working connection flow in boring procedure is only small, unnecessary oil enters the first logical valve, impact signal oil is had owing to now impacting guide hydraulic fluid port X7,3rd pilot operated directional control valve commutation, above-mentioned excess traffic enters and impacts part, the impact oil circuit flowed out through valve group by the 3rd liquid controlled reversing valve outlet port exports C entrance impact system, and the pressure differential of now feeding and impact acts on the first damping hole two ends.
When fast feed hydraulic control hydraulic fluid port X5 comes oily, impacting and stop, fast feed realizes.Now fast feed hydraulic control hydraulic fluid port X5 carrys out oily promotion the second pilot operated directional control valve 2 and commutates, and main oil-in oil-feed walks around the 4th reversal valve, the first damping hole and flow control valve through the second oil-out of the second pilot operated directional control valve, is directly entered the first pilot operated directional control valve 1. Now the first logical valve no pressure oil enters, and is in the state of blocking, thus realizing fast feed, the overflow valve outside system overflow thus valve group is set up.
When changing bar feed hydraulic control hydraulic fluid port X6 and coming oily, the 4th pilot operated directional control valve 4 commutates, and its oil-in and the second oil-out turn on, and feed flow quantitative change is determined by the flow control valve 6 changing bar state. During boring, feeding flow is determined by the first damping hole at a slow speed, changes bar state and is determined by flow control valve. First damping hole and the combination of the first logical valve, possessed pressure compensation.
When normal drill, propelling pressure causes the first sequence valve 13 oil-in, when exceeding its setting pressure, its oil inlet and outlet turns on, pressure oil acts on the 5th pilot operated directional control valve 14 hydraulic control end makes it commutate, 5th pilot operated directional control valve oil inlet and outlet blocks, and the second logical valve 16 blocks not draining, and impact system runs with maximum pressure.
When feeding and impact action simultaneously, when drill bit is but without contact rock or perforate state, propelling pressure is lower than the setting pressure of the first sequence valve 13, and the first sequence valve is failure to actuate so that the 5th pilot operated directional control valve 14 return conducting. At this moment, the hydraulic control mouth pressure of the second logical valve 16 is equal to the setting pressure of the first overflow valve 15, and pressure oil is through the second logical valve 16 pressure release, and impact system realizes weak punching with less pressure.
When drilling rod blocks, it is difficult to when extracting from hole, it is necessary to lift up along impact. At this moment propelling pressure is substantially zeroed, and surge is the weak surge that the first overflow valve 15 is set up. It is made to commutate if having a power failure now to the 6th solenoid directional control valve again, the pressure oil of impact system just enters the anti-end of beating of rock drill by the 6th solenoid directional control valve 19 through the anti-way outlet D that buys oil, make the active force that bit shank is upwards hit, thus helping drilling rod to extract from the hole blocked, it is prevented that drilling tool loses.
Claims (10)
1. the self adaptation valve group of a hydraulic rock drilling machine, it is characterised in that including:
First pilot operated directional control valve, two actuator ports of this first pilot operated directional control valve advance oil circuit respectively through corresponding and lift up the propelling hydraulic fluid port of oil circuit and this valve group and lift up hydraulic fluid port and connect, the propelling end hydraulic control mouth of the first pilot operated directional control valve with lift up hold hydraulic control mouth respectively with propelling guide's hydraulic fluid port of valve group and lift up guide's hydraulic fluid port and connect;
Second pilot operated directional control valve, its oil-in connects with the main oil-in of this valve group, the oil-in connection of its oil-out and the first pilot operated directional control valve and the first logical valve;
Shuttle valve, its two oil-in respectively with advance oil circuit and lift up oil communication, the hydraulic control mouth of its oil-out and the first logical valve connects;
First logical valve, the oil-out of this first logical valve and the oil-in connection of the 3rd pilot operated directional control valve;
3rd pilot operated directional control valve, the hydraulic control mouth of the 3rd pilot operated directional control valve connects with impact guide's hydraulic fluid port of valve group, and the impact oil circuit outlet of its oil-out and valve group, its oil return opening connects with the oil return opening of valve group.
2. the self adaptation valve group of hydraulic rock drilling machine according to claim 1, it is characterized in that: also include the first damping hole, the oil-out of this first damping hole and the oil-in connection of the first pilot operated directional control valve, described second pilot operated directional control valve has the first and second oil-outs, the oil-in of its first oil-out and the first damping hole and the oil-in connection of the first logical valve, its second oil-out walks around the oil-in connection of the first damping hole and the first pilot operated directional control valve, and the hydraulic control mouth of this second pilot operated directional control valve connects with the fast feed hydraulic control hydraulic fluid port of valve group.
3. the self adaptation valve group of hydraulic rock drilling machine according to claim 2, it is characterized in that: also include the 4th pilot operated directional control valve and flow control valve, the oil-in of described 4th pilot operated directional control valve and the first oil-out connection of the second pilot operated directional control valve, first oil-out of the 4th pilot operated directional control valve and the oil-in connection of the first damping hole, second oil-out of the 4th pilot operated directional control valve connects with the oil-in of flow control valve, the hydraulic control mouth of the 4th pilot operated directional control valve connects with the bar feed hydraulic control hydraulic fluid port that changes of valve group, the oil-out of described flow control valve and the oil-in connection of the first pilot operated directional control valve.
4. the self adaptation valve group of hydraulic rock drilling machine according to claim 1, it is characterized in that: also include the 5th pilot operated directional control valve and the first overflow valve, the oil-in of described 5th pilot operated directional control valve and the impact oil circuit outlet of valve group, the oil-in connection of its oil-out and the first overflow valve, the hydraulic control mouth of the 5th pilot operated directional control valve is connected with the propelling hydraulic fluid port of valve group, and the oil-out of described first overflow valve connects with the oil return opening of valve group.
5. the self adaptation valve group of hydraulic rock drilling machine according to claim 4, it is characterized in that: also include the first sequence valve, its oil-in connects with the propelling hydraulic fluid port of valve group, its oil-out connects with the hydraulic control mouth of described 5th pilot operated directional control valve, when the pressure of described propelling hydraulic fluid port is more than the setting pressure of the first sequence valve, the first sequence valve action makes its oil-in and oil-out conducting.
6. the self adaptation valve group of the hydraulic rock drilling machine according to claim 4 or 5, it is characterized in that: also include the second logical valve and the second damping hole, described second damping hole is located between the oil-in of the 5th pilot operated directional control valve and the impact oil circuit outlet of valve group, the oil-in of the second logical valve and impact oil circuit outlet, its oil-out connects with the oil return opening of valve group, described second logical valve has the working position of oil inlet and outlet cut-off, the hydraulic control mouth of this working position and the oil-out connection of the second damping hole, described second logical valve also has the working position of oil inlet and outlet conducting, the hydraulic control mouth of this working position is connected with the oil-in of this second logical valve by valve core inside guide's oil circuit duct.
7. the self adaptation valve group of hydraulic rock drilling machine according to claim 1, it is characterized in that: also include draining logic element, the oil-in of this draining logic element advances hydraulic fluid port to connect with valve group, the oil-out of draining logic element connects with valve group oil return opening, and the hydraulic control mouth of draining logic element regulates hydraulic fluid port with the propelling pressure of valve group and connects.
8. the self adaptation valve group of hydraulic rock drilling machine according to claim 1, it is characterised in that: also including the 6th reversal valve, the impact oil circuit outlet of the oil-in of the 6th reversal valve and valve group, its oil-out connects with the anti-way outlet of buying oil of valve group.
9. the self adaptation valve group of hydraulic rock drilling machine according to claim 1, it is characterised in that: also including check valve, it is located between the oil return opening of the first pilot operated directional control valve and valve group.
10. the self adaptation valve group of hydraulic rock drilling machine according to claim 1, it is characterised in that: also including the 3rd damping hole, it is located between the oil-out of shuttle valve and the hydraulic control mouth of the first logical valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521024823.4U CN205298110U (en) | 2015-12-11 | 2015-12-11 | Hydraulic pressure rock drilling machine's self -adaptation valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521024823.4U CN205298110U (en) | 2015-12-11 | 2015-12-11 | Hydraulic pressure rock drilling machine's self -adaptation valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205298110U true CN205298110U (en) | 2016-06-08 |
Family
ID=56430616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521024823.4U Withdrawn - After Issue CN205298110U (en) | 2015-12-11 | 2015-12-11 | Hydraulic pressure rock drilling machine's self -adaptation valves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205298110U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351272A (en) * | 2015-12-11 | 2016-02-24 | 重庆纳川山隅重工设备有限公司 | Self-adaptive valve group for hydraulic rock drill |
| CN106837165A (en) * | 2017-04-06 | 2017-06-13 | 张家港保税区永大机械有限公司 | A kind of hydraulic rotating unit head |
| CN109469657A (en) * | 2018-12-26 | 2019-03-15 | 江苏徐工工程机械研究院有限公司 | Hydraulic system and trepan |
| CN114321060A (en) * | 2021-12-15 | 2022-04-12 | 中铁工程装备集团有限公司 | Rock drilling automatic control valve group and control system |
-
2015
- 2015-12-11 CN CN201521024823.4U patent/CN205298110U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351272A (en) * | 2015-12-11 | 2016-02-24 | 重庆纳川山隅重工设备有限公司 | Self-adaptive valve group for hydraulic rock drill |
| CN106837165A (en) * | 2017-04-06 | 2017-06-13 | 张家港保税区永大机械有限公司 | A kind of hydraulic rotating unit head |
| CN109469657A (en) * | 2018-12-26 | 2019-03-15 | 江苏徐工工程机械研究院有限公司 | Hydraulic system and trepan |
| CN109469657B (en) * | 2018-12-26 | 2024-02-02 | 江苏徐工工程机械研究院有限公司 | Hydraulic system and drilling machine |
| CN114321060A (en) * | 2021-12-15 | 2022-04-12 | 中铁工程装备集团有限公司 | Rock drilling automatic control valve group and control system |
| CN114321060B (en) * | 2021-12-15 | 2024-05-24 | 中铁工程装备集团有限公司 | Automatic control valve group and control system for rock drilling |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205298110U (en) | Hydraulic pressure rock drilling machine's self -adaptation valves | |
| CN205388056U (en) | Rock drilling machine's self -adaptation valves | |
| CN102155154B (en) | Pressure controlled automatic reversing working device for punch of rock drilling machine | |
| CN101723274B (en) | Main winch retracting and stretching control system of rotary drilling rig and rotary drilling rig | |
| US10801282B2 (en) | Screw drill bypass valve with large displacement diversion function | |
| CN103641012B (en) | A kind of rig decompression drilling control system and use the rock entering drilling machine of this control system | |
| CN104405362B (en) | Automatic bottom hole pressure control device for under-balanced drilling and using method of device | |
| CN205689156U (en) | A kind of high-adaptability stress decentralized bidirectional hydraulic drilling jar | |
| CN102414395B (en) | Valve system for drilling systems | |
| CN205423369U (en) | All -hydraulic open -air rock drilling machine's anti -sticking borer valve unit | |
| CN108194444B (en) | Anti-idle-drilling hydraulic system of top hammer drilling machine and control method thereof | |
| CN107654426A (en) | A kind of drill jumbo and its impulsive control hydraulic system | |
| CN103726784B (en) | Hydraulic drill rig Solid rocket engine impacts hydraulic circuit and control method thereof | |
| CN103058085A (en) | Winding motor hydraulic system and rotary drilling rig | |
| CN105351272B (en) | Self-adaptive valve group for hydraulic rock drill | |
| CN205953386U (en) | Dig rig hoist actuating system soon | |
| CN105351273B (en) | Anti-jamming control valve group for fully-hydraulic opencast rock drill | |
| CN206889375U (en) | Down-the-hole drill propelling pressure self-adaptive hydraulic control loop | |
| CN203716840U (en) | Hydraulic drill carriage pushing control impact hydraulic loop | |
| CN105332967B (en) | Self-adaptive valve bank for rock drilling machine | |
| CN208934629U (en) | A kind of built-in steel-ball type hydraulic differential mechanism of two-tube core drill | |
| CN203716836U (en) | Impact pressure remote-control hydraulic circuit of jackdrill | |
| CN203271633U (en) | Slips internally-locking system and pressure operation machine | |
| CN111894496A (en) | Drilling pressure control type underground circulation short circuit and coiled tubing drill plug dynamic flushing process | |
| CN109025875A (en) | A kind of built-in steel-ball type hydraulic differential mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160608 Effective date of abandoning: 20170524 |