CN102536109A - 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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- CN102536109A CN102536109A CN2011104401981A CN201110440198A CN102536109A CN 102536109 A CN102536109 A CN 102536109A CN 2011104401981 A CN2011104401981 A CN 2011104401981A CN 201110440198 A CN201110440198 A CN 201110440198A CN 102536109 A CN102536109 A CN 102536109A
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Abstract
The invention discloses a rock drilling impact pressure regulating device and a rock drilling machine with the 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 the Coal Mechanical field, be specifically related to a kind of rock drilling surge adjusting device and have its 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 through manual adjustments.Because the uncertainty of rock texture, formation hardness also change thereupon, the surge of manual adjustments hammer drill can not adapt to this variation of rock, influences cutting rate and efficient.
Summary of the invention
In order to overcome the above-mentioned defective and the deficiency of prior art, first purpose of the present invention is to provide a kind of rock drilling surge adjusting device of automatic adjusting surge, comprising: pilot operated directional control valve, first overflow valve, second overflow valve; The control mouth of pilot operated directional control valve is used to connect hammer drill and advances the oil cylinder working-pressure hydraulic fluid port, and pilot operated directional control valve is used for when hammer drill advances the force value of oil cylinder working-pressure oil to be less than or equal to predetermined threshold value, being communicated with the pressure hydraulic fluid port that first overflow valve and hammer drill impact oil circuit; And the force value that advances oil cylinder working-pressure oil at hammer drill is during greater than predetermined threshold value, breaks off being connected of pressure hydraulic fluid port of first overflow valve and hammer drill impact oil circuit; Second overflow valve is used to connect the pressure hydraulic fluid port that hammer drill impacts oil circuit; The preset pressure value of second overflow valve is greater than the preset pressure value of first overflow valve.
Further, rock drilling surge adjusting device also comprises damper, and first end of damper connects the control mouth of pilot operated directional control valve, and second end is used to connect hammer drill and advances the oil cylinder working-pressure hydraulic fluid port.
Further, the oil-in of pilot operated directional control valve is connected with the oil-in of second overflow valve.
Further, the oil-out of first overflow valve is connected with the oil-out of second overflow valve.
Further, the drain tap of pilot operated directional control valve connects the oil-out of first overflow valve.
Further, rock drilling surge adjusting device also comprises: oil return fuel tank, oil return fuel tank connect the oil-out of first overflow valve and the oil-out of 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.
In order to overcome the above-mentioned defective and the deficiency of prior art, second purpose of the present invention is to provide a kind of hammer drill, comprises that hammer drill advances the pressure hydraulic fluid port of oil cylinder working-pressure hydraulic fluid port, hammer drill impact oil circuit, and above-mentioned any rock drilling surge adjusting device.
Rock drilling surge adjusting device embodiment of the present invention advances the break-make of the propelling pressure control pilot operated directional control valve of oil cylinder working-pressure hydraulic fluid port through utilizing hammer drill; And then the force value of the pressure hydraulic fluid port level pressure overflow of oil circuit is impacted in control to hammer drill; The preset pressure value that is first overflow valve still is the preset pressure value of second overflow valve; Thereby realized switching the high-low pressure that hammer drill impacts according to formation hardness automatically, improved hammer drill penetration rate and efficient, reduced labour intensity.
Description of drawings
Fig. 1 is the structural representation of rock drilling surge adjusting device embodiment of the present invention.
The specific embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
As shown in Figure 1, rock drilling surge adjusting device 10 embodiment of the present invention comprise: pilot operated directional control valve 1, first overflow valve 2, second overflow valve 3; The control mouth of pilot operated directional control valve 1 is used to connect hammer drill and advances oil cylinder working-pressure hydraulic fluid port 6; Pilot operated directional control valve 1 is used for when hammer drill advances the force value of oil cylinder working-pressure oil to be less than or equal to predetermined threshold value, being communicated with the pressure hydraulic fluid port 7 that first overflow valve 2 and hammer drill impact oil circuit; And the force value that advances oil cylinder working-pressure oil at hammer drill is during greater than predetermined threshold value, breaks off being connected of pressure hydraulic fluid port 7 of first overflow valve 2 and hammer drill impact oil circuit; Second overflow valve 3 is used to connect the pressure hydraulic fluid port 7 that hammer drill impacts oil circuit; The preset pressure value of second overflow valve 3 is greater than the preset pressure value of first overflow valve 2.Choosing of this predetermined threshold value can rule of thumb be confirmed; To guarantee that pilot operated directional control valve 1 can advance oil cylinder working-pressure hydraulic fluid port 6 according to the soft durometer difference of rock and during conversion pressure at hammer drill, conversion first overflow valve 2 and hammer drill impact the on off operating mode of the pressure hydraulic fluid port 7 of oil circuit in time.
Preferably, for steady pressure, rock drilling surge adjusting device 10 also comprises damper 4, and first end of damper 4 connects the control mouth of pilot operated directional control valve 1, and second end is used to connect hammer drill and advances oil cylinder working-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 second overflow valve 3.Like this, through being set, an oil-in A as shown in Figure 1 can realize that the oil-in of pilot operated directional control valve 1 and the oil-in of second overflow valve 3 are connected with the pressure hydraulic fluid port 7 that hammer drill impacts oil circuit.
Preferably, concentrate draining, can the oil-out of first overflow valve 2 be connected with the oil-out of second overflow valve 3 in order to realize rock drilling surge adjusting device 10.Further preferably, the drain tap of pilot operated directional control valve 1 connects the oil-out of first overflow valve 2.Like this, through the concentrated draining that a drain tap C as shown in Figure 1 can realize first overflow valve 2, second overflow valve 3 and pilot operated directional control valve 1 is set.As shown in Figure 1, through simplifying of oil-in and drain tap, can rock drilling surge adjusting device 10 be made and have two oil-in A and B, the structure shown in the integrated morphology of a drain tap C, the formation of integrated morphology are in Fig. 1 dotted line, the convenient 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 first overflow valve 2 and the oil-out of second overflow valve 3.Certainly, also can be used for pilot operated directional control valve 1 oil return at oil return fuel tank 5.
During concrete operations, pilot operated directional control valve 1 can adopt polytype reversal valve, like 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: when rock is softer; The propelling pressure that hammer drill advances oil cylinder working-pressure hydraulic fluid port 6 to produce 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 through 2 overflows of first overflow valve, and the hammer drill surge is the setting pressure (being low pressure) of overflow valve 2; When rock was hard, when hammer drill advanced the oil cylinder propelling pressure to be higher than the setting pressure of pilot operated directional control valve 1, pilot operated directional control valve 1 was closed, and the hydraulic oil of oil-in A is through overflow valve 4 overflows, and the hammer drill surge is the setting pressure (being high pressure) of overflow valve 4.
Rock drilling surge adjusting device of the present invention advances the break-make of the propelling pressure control pilot operated directional control valve of oil cylinder working-pressure hydraulic fluid port through utilizing hammer drill; And then the force value of the pressure hydraulic fluid port level pressure overflow of oil circuit is impacted in control to hammer drill; The preset pressure value that is first overflow valve still is the preset pressure value of second overflow valve; Thereby realized switching the high-low pressure that hammer drill impacts according to formation hardness automatically, improved hammer drill penetration rate and efficient, reduced labour intensity.
More than be merely preferred embodiment of the present invention, or not all within spirit of the present invention and principle in order to restriction the present invention, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a rock drilling surge adjusting device is characterized in that, comprising: pilot operated directional control valve (1), first overflow valve (2), second overflow valve (3);
The control mouth of said pilot operated directional control valve (1) is used to connect hammer drill and advances oil cylinder working-pressure hydraulic fluid port (6); Said pilot operated directional control valve (1) is used for when hammer drill advances the force value of oil cylinder working-pressure oil to be less than or equal to predetermined threshold value, being communicated with the pressure hydraulic fluid port (7) that said first overflow valve (2) and hammer drill impact oil circuit; And the force value that advances oil cylinder working-pressure oil at said hammer drill is during greater than said predetermined threshold value, breaks off being connected of pressure hydraulic fluid port (7) of said first overflow valve (2) and said hammer drill impact oil circuit;
Said second overflow valve (3) is used to connect the pressure hydraulic fluid port (7) that said hammer drill impacts oil circuit; The preset pressure value of said second overflow valve (3) is greater than the preset pressure value of said first overflow valve (2).
2. rock drilling surge adjusting device according to claim 1; It is characterized in that; Also comprise damper (4), first end of said damper (4) connects the control mouth of said pilot operated directional control valve (1), and second end is used to connect said hammer drill and advances oil cylinder working-pressure hydraulic fluid port (6).
3. rock drilling surge adjusting device according to claim 1 and 2 is characterized in that, the oil-in of said pilot operated directional control valve (1) is connected with the oil-in of said second overflow valve (3).
4. rock drilling surge adjusting device according to claim 3 is characterized in that, the oil-out of said first overflow valve (2) is connected with the oil-out of said second overflow valve (3).
5. rock drilling surge adjusting device according to claim 4 is characterized in that the drain tap of said pilot operated directional control valve (1) connects the oil-out of said first overflow valve (2).
6. require each described rock drilling surge adjusting device among the 1-5 according to aforesaid right; It is characterized in that; Also comprise: oil return fuel tank (5), said oil return fuel tank (5) connects the oil-out of said first overflow valve (2) and the oil-out of said second overflow valve (3).
7. require each described rock drilling surge adjusting device among the 1-5 according to aforesaid right, it is characterized in that said 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.
8. a hammer drill comprises that hammer drill advances oil cylinder working-pressure hydraulic fluid port (6), hammer drill to impact the pressure hydraulic fluid port (7) of oil circuit, it is characterized in that, also comprises like each described rock drilling surge adjusting device among the above-mentioned claim 1-7.
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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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| 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 true CN102536109A (en) | 2012-07-04 |
| CN102536109B CN102536109B (en) | 2014-07-09 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103556943A (en) * | 2013-11-08 | 2014-02-05 | 阿特拉斯科普柯(南京)建筑矿山设备有限公司 | Method for controlling impact power of rock drilling system according to propelling force and device |
| CN103821451A (en) * | 2014-02-28 | 2014-05-28 | 金川集团股份有限公司 | Hydraulic control system of anti-clamping drill rod of rock drilling machine |
| CN106438526A (en) * | 2016-11-12 | 2017-02-22 | 湘潭大学 | Electric proportional control type rock drill impacting pressure 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 |
| CN108086906A (en) * | 2018-01-29 | 2018-05-29 | 唐山市丰润区东方液压机电研究所 | A kind of Fully-hydraulic drilling rig progressively pressue device and method |
| CN115356141A (en) * | 2022-10-21 | 2022-11-18 | 北京科技大学 | Impact performance testing system and method for hydraulic rock drill |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005335B (en) * | 2019-04-09 | 2020-06-19 | 湖南文理学院 | Impact-level-adjustable hydraulic rock drill based on vibration impact |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103556943A (en) * | 2013-11-08 | 2014-02-05 | 阿特拉斯科普柯(南京)建筑矿山设备有限公司 | Method for controlling impact power of rock drilling system according to propelling force and device |
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| CN106438526A (en) * | 2016-11-12 | 2017-02-22 | 湘潭大学 | Electric proportional control type rock drill impacting pressure automatic control system |
| 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 |
| CN108086906A (en) * | 2018-01-29 | 2018-05-29 | 唐山市丰润区东方液压机电研究所 | A kind of Fully-hydraulic drilling rig progressively pressue device and method |
| CN115356141A (en) * | 2022-10-21 | 2022-11-18 | 北京科技大学 | Impact performance testing system and method for hydraulic rock drill |
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| CN102536109B (en) | 2014-07-09 |
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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. |