CN102536109B - Rock drilling impact pressure regulating device and rock drilling machine with same - Google Patents
Rock drilling impact pressure regulating device and rock drilling machine with same Download PDFInfo
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- CN102536109B CN102536109B CN201110440198.1A CN201110440198A CN102536109B CN 102536109 B CN102536109 B CN 102536109B CN 201110440198 A CN201110440198 A CN 201110440198A CN 102536109 B CN102536109 B CN 102536109B
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Abstract
The invention discloses a rock drilling machine, which comprises a rock drilling impact pressure regulating device, wherein the rock drilling impact pressure regulating device comprises a hydraulic control reversing valve, a first overflow valve and a second overflow valve; a control orifice of the hydraulic control reversing valve is used for being connected with a pressure oil orifice of a pushing oil cylinder of the rock drilling machine, and the hydraulic control reversing valve is used for communicating the first overflow valve and a pressure oil orifice of an impact oil circuit of the rock drilling machine when the pressure value of the pressure oil of the pushing oil cylinder of the rock drilling machine is less than or equal to the preset threshold; the connection of the first overflow valve and the pressure oil orifice of the impact oil circuit of the rock drilling machine is disconnected when the pressure value of the pressure oil of the pushing oil cylinder of the rock drilling machine is greater than the preset threshold; the second overflow valve is used for being connected with the pressure oil orifice of the impact oil circuit of the rock drilling machine; and the preset pressure value of the second overflow valve is greater than the preset pressure value of the first overflow valve. According to the invention, the impact high pressure and low pressure of the rock drilling machine can be switched automatically according to the rock hardness, the hole drilling speed and efficiency of the rock drilling machine are improved, and the labor intensity is lowered.
Description
Technical field
The present invention relates to Coal Mechanical field, be specifically related to a kind of hammer drill.
Background technology
At present, generally before boring, adopt special detecting instrument to detect formation hardness, the surge of hammer drill rock drilling is set different pressure by manual adjustments.Due to the uncertainty of rock texture, formation hardness also changes thereupon, and the surge of manual adjustments hammer drill can not adapt to this variation of rock, affects cutting rate and efficiency.
Summary of the invention
In order to overcome above-mentioned defect and the deficiency of prior art, the first object of the present invention is to provide a kind of hammer drill, comprise pressure hydraulic fluid port and rock drilling surge adjusting device that hammer drill propelling cylinder pressure hydraulic fluid port, hammer drill impact oil circuit, this rock drilling surge adjusting device comprises: pilot operated directional control valve, the first overflow valve, the second overflow valve; The control mouth of pilot operated directional control valve is used for connecting hammer drill propelling cylinder pressure hydraulic fluid port, and pilot operated directional control valve, in the time that the force value of hammer drill propelling cylinder pressure oil is less than or equal to predetermined threshold value, is communicated with the pressure hydraulic fluid port of the first overflow valve and hammer drill impact oil circuit; And in the time that the force value of hammer drill propelling cylinder pressure oil is greater than predetermined threshold value, described pilot operated directional control valve commutation, disconnect being connected of pressure hydraulic fluid port that the first overflow valve and hammer drill impact oil circuit, and being communicated with the second overflow valve and hammer drill and impacting the pressure hydraulic fluid port of oil circuit, hammer drill surge is the preset pressure value of the second overflow valve; The preset pressure value of the second overflow valve is greater than the preset pressure value of the first overflow valve.
Further, rock drilling surge adjusting device also comprises damper, and the first end of damper connects the control mouth of pilot operated directional control valve, and the second end is used for connecting hammer drill propelling cylinder pressure hydraulic fluid port.
Further, the oil-in of pilot operated directional control valve is connected with the oil-in of the second overflow valve.
Further, the oil-out of the first overflow valve is connected with the oil-out of the second overflow valve.
Further, the drain tap of pilot operated directional control valve connects the oil-out of the first overflow valve.
Further, rock drilling surge adjusting device also comprises: oil return fuel tank, oil return fuel tank connects the oil-out of the first overflow valve and the oil-out of the second overflow valve.
Further, pilot operated directional control valve is two-position two-way hydraulic control reversal valve, two-position three way pilot operated directional control valve or two-position four-way pilot operated directional control valve.
Hammer drill of the present invention is by utilizing the break-make of propelling pressure control pilot operated directional control valve of hammer drill propelling cylinder pressure hydraulic fluid port, and then the force value of the pressure hydraulic fluid port level pressure overflow of oil circuit is impacted in control to hammer drill, be the preset pressure value of the first overflow valve or the preset pressure value of the second overflow valve, thereby realize and automatically switched according to formation hardness the high-low pressure that hammer drill impacts, improve hammer drill penetration rate and efficiency, reduced labour intensity.
Accompanying drawing explanation
Fig. 1 is the structural representation of the rock drilling surge adjusting device embodiment in hammer drill of the present invention.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, rock drilling surge adjusting device 10 embodiment in hammer drill of the present invention comprise: pilot operated directional control valve 1, the first overflow valve 2, the second overflow valve 3; The control mouth of pilot operated directional control valve 1 is used for connecting hammer drill propelling cylinder pressure hydraulic fluid port 6, pilot operated directional control valve 1, in the time that the force value of hammer drill propelling cylinder pressure oil is less than or equal to predetermined threshold value, is communicated with the pressure hydraulic fluid port 7 of the first overflow valve 2 and hammer drill impact oil circuit; And in the time that the force value of hammer drill propelling cylinder pressure oil is greater than predetermined threshold value, disconnect being connected of pressure hydraulic fluid port 7 of the first overflow valve 2 and hammer drill impact oil circuit; The second overflow valve 3 impacts the pressure hydraulic fluid port 7 of oil circuit for connecting hammer drill; The preset pressure value of the second overflow valve 3 is greater than the preset pressure value of the first overflow valve 2.Choosing of this predetermined threshold value can rule of thumb be determined, to guarantee that pilot operated directional control valve 1 can be in the time that hammer drill propelling cylinder pressure hydraulic fluid port 6 converts pressure according to the soft durometer of rock is different, to convert in time the first overflow valve 2 and hammer drill to impact the on off operating mode of the pressure hydraulic fluid port 7 of oil circuit.
Preferably, for steady pressure, rock drilling surge adjusting device 10 also comprises damper 4, and the first end of damper 4 connects the control mouth of pilot operated directional control valve 1, and the second end is used for connecting hammer drill propelling cylinder pressure hydraulic fluid port 6.
Preferably, in order to simplify the oil-in quantity of rock drilling surge adjusting device 10, the oil-in of pilot operated directional control valve 1 is connected with the oil-in of the second overflow valve 3.Like this, by arranging, an oil-in A as shown in Figure 1 can realize the oil-in of pilot operated directional control valve 1 and the oil-in of the second overflow valve 3 is connected with the pressure hydraulic fluid port 7 of hammer drill impact oil circuit.
Preferably, concentrate draining in order to realize rock drilling surge adjusting device 10, the oil-out of the first overflow valve 2 can be connected with the oil-out of the second overflow valve 3.Further preferably, the drain tap of pilot operated directional control valve 1 connects the oil-out of the first overflow valve 2.Like this, can realize the concentrated draining of the first overflow valve 2, the second overflow valve 3 and pilot operated directional control valve 1 by a setting drain tap C as shown in Figure 1.As shown in Figure 1, by simplifying of oil-in and drain tap, rock drilling surge adjusting device 10 can be made with two oil-in A and B, the integrated morphology of a drain tap C, the structure of the formation of integrated morphology shown in being in Fig. 1 dotted line, easy to use.
Preferably, for the ease of oil return, rock drilling surge adjusting device 10 also comprises oil return fuel tank 5, and oil return fuel tank 5 connects the oil-out of the first overflow valve 2 and the oil-out of the second overflow valve 3.Certainly, also can be for pilot operated directional control valve 1 oil return at oil return fuel tank 5.
When concrete operations, pilot operated directional control valve 1 can adopt polytype reversal valve, as two-position two-way hydraulic control reversal valve, two-position three way pilot operated directional control valve or two-position four-way pilot operated directional control valve etc.
The operating principle of above-mentioned rock drilling surge adjusting device 10 is summarized as follows: in the time that rock is softer, the propelling pressure that hammer drill propelling cylinder pressure hydraulic fluid port 6 produces is lower than the predetermined threshold value of pilot operated directional control valve 1, pilot operated directional control valve 1 is opened, the hydraulic oil of oil-in A is by the first overflow valve 2 overflows, and hammer drill surge is the setting pressure (being low pressure) of the first overflow valve 2; In the time that rock is harder, hammer drill propelling cylinder propelling pressure is during higher than the setting pressure of pilot operated directional control valve 1, pilot operated directional control valve 1 is closed, and the hydraulic oil of oil-in A is by the second overflow valve 3 overflows, and hammer drill surge is the setting pressure (being high pressure) of the second overflow valve 3.
Rock drilling surge adjusting device of the present invention is by utilizing the break-make of propelling pressure control pilot operated directional control valve of hammer drill propelling cylinder pressure hydraulic fluid port, and then the force value of the pressure hydraulic fluid port level pressure overflow of oil circuit is impacted in control to hammer drill, be the preset pressure value of the first overflow valve or the preset pressure value of the second overflow valve, thereby realize and automatically switched according to formation hardness the high-low pressure that hammer drill impacts, improve hammer drill penetration rate and efficiency, reduced labour intensity.
These are only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (7)
1. a hammer drill, comprise that hammer drill propelling cylinder pressure hydraulic fluid port (6), hammer drill impact the pressure hydraulic fluid port (7) of oil circuit, it is characterized in that, also comprise rock drilling surge adjusting device, described rock drilling surge adjusting device comprises: pilot operated directional control valve (1), the first overflow valve (2), the second overflow valve (3);
The control mouth of described pilot operated directional control valve (1) connects described hammer drill propelling cylinder pressure hydraulic fluid port (6), described pilot operated directional control valve (1), in the time that the force value of hammer drill propelling cylinder pressure oil is less than or equal to predetermined threshold value, is communicated with the pressure hydraulic fluid port (7) of described the first overflow valve (2) and described hammer drill impact oil circuit; And in the time that the force value of described hammer drill propelling cylinder pressure oil is greater than described predetermined threshold value, described pilot operated directional control valve (1) commutation, disconnect being connected of pressure hydraulic fluid port (7) that described the first overflow valve (2) and described hammer drill impact oil circuit, and being communicated with the described hammer drill of described the second overflow valve (3) and impacting the pressure hydraulic fluid port (7) of oil circuit, described hammer drill surge is the preset pressure value of described the second overflow valve (3); The preset pressure value of described the second overflow valve (3) is greater than the preset pressure value of described the first overflow valve (2).
2. hammer drill according to claim 1, it is characterized in that, described rock drilling surge adjusting device also comprises damper (4), the first end of described damper (4) connects the control mouth of described pilot operated directional control valve (1), and the second end is used for connecting described hammer drill propelling cylinder pressure hydraulic fluid port (6).
3. hammer drill according to claim 1 and 2, is characterized in that, the oil-in of described pilot operated directional control valve (1) is connected with the oil-in of described the second overflow valve (3).
4. hammer drill according to claim 3, is characterized in that, the oil-out of described the first overflow valve (2) is connected with the oil-out of described the second overflow valve (3).
5. hammer drill according to claim 4, is characterized in that, the drain tap of described pilot operated directional control valve (1) connects the oil-out of described the first overflow valve (2).
6. according to the hammer drill described in any one in the claims 1-2 and 4-5, it is characterized in that, described rock drilling surge adjusting device also comprises: oil return fuel tank (5), described oil return fuel tank (5) connects the oil-out of described the first overflow valve (2) and the oil-out of described the second overflow valve (3).
7. according to the hammer drill described in any one in the claims 1-2 and 4-5, it is characterized in that, described pilot operated directional control valve (1) is two-position two-way hydraulic control reversal valve, two-position three way pilot operated directional control valve or two-position four-way pilot operated directional control valve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110440198.1A CN102536109B (en) | 2011-12-26 | 2011-12-26 | Rock drilling impact pressure regulating device and rock drilling machine with same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110440198.1A CN102536109B (en) | 2011-12-26 | 2011-12-26 | Rock drilling impact pressure regulating device and rock drilling machine with same |
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| CN102536109A CN102536109A (en) | 2012-07-04 |
| CN102536109B true CN102536109B (en) | 2014-07-09 |
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| CN201110440198.1A Active CN102536109B (en) | 2011-12-26 | 2011-12-26 | Rock drilling impact pressure regulating device and rock drilling machine with same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005335A (en) * | 2019-04-09 | 2019-07-12 | 湖南文理学院 | It is a kind of that a grade adjustable hydraulic rock drill is rushed based on vibratory impulse |
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| CN103556943B (en) * | 2013-11-08 | 2016-05-11 | 阿特拉斯科普柯(南京)建筑矿山设备有限公司 | According to the method for the ballistic work of feeding force control rock drilling system and device |
| CN103821451B (en) * | 2014-02-28 | 2017-04-12 | 金川集团股份有限公司 | Hydraulic control system of anti-clamping drill rod of rock drilling machine |
| CN106438526B (en) * | 2016-11-12 | 2017-11-14 | 湘潭大学 | A kind of electric proportional control formula rock drill surge automatic control system |
| CN107654426A (en) * | 2017-10-30 | 2018-02-02 | 湖南五新隧道智能装备股份有限公司 | A kind of drill jumbo and its impulsive control hydraulic system |
| CN108086906B (en) * | 2018-01-29 | 2023-06-16 | 秦皇岛迪峰凿岩设备有限公司 | Device and method for gradually pressurizing full-hydraulic rock drilling trolley |
| CN115356141B (en) * | 2022-10-21 | 2023-04-28 | 北京科技大学 | Impact performance testing system and method for hydraulic rock drill |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1049947C (en) * | 1995-07-07 | 2000-03-01 | 中南工业大学 | Controlling system controlled by flow for hydraulic rock drill |
| JP2007303584A (en) * | 2006-05-12 | 2007-11-22 | Nippon Sharyo Seizo Kaisha Ltd | Hydraulic control device |
| JP2010133432A (en) * | 2008-12-02 | 2010-06-17 | Sumitomo (Shi) Construction Machinery Co Ltd | Hydraulic circuit of construction machine |
| CN101457633B (en) * | 2008-12-25 | 2010-12-15 | 浙江大学 | Independence control hydraulic impactor for piston displacement electric feedback load port |
| CN101748969B (en) * | 2009-12-23 | 2012-11-14 | 三一重型装备有限公司 | Hydraulic control loop used for jackdrill and control system thereof |
| CN201620753U (en) * | 2009-12-24 | 2010-11-03 | 深圳市普隆重工有限公司 | Rock drilling machine |
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2011
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005335A (en) * | 2019-04-09 | 2019-07-12 | 湖南文理学院 | It is a kind of that a grade adjustable hydraulic rock drill is rushed based on vibratory impulse |
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| CN102536109A (en) | 2012-07-04 |
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Effective date of registration: 20170124 Address after: 413000 Yiyang high tech Zone in the eastern part of the New District of integrated services building, room 512, Hunan Patentee after: Yiyang science and Technology Achievement Transformation Service Center Patentee after: Sany Heavy Equipment Co.,Ltd. Address before: Yansai Lake Street 110027 economic and Technological Development Zone Liaoning city Shenyang province No. 31 Patentee before: Sany Heavy Equipment Co.,Ltd. |