CN103174378A - Middle-low air pressure down-hole hammer - Google Patents
Middle-low air pressure down-hole hammer Download PDFInfo
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- CN103174378A CN103174378A CN2013100776111A CN201310077611A CN103174378A CN 103174378 A CN103174378 A CN 103174378A CN 2013100776111 A CN2013100776111 A CN 2013100776111A CN 201310077611 A CN201310077611 A CN 201310077611A CN 103174378 A CN103174378 A CN 103174378A
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Abstract
Provided is a middle-low air pressure down-hole hammer. The middle-low air pressure down-hole hammer comprises a back joint, a check valve, an air-distribution rod, a piston, an internal cylinder, an outer casing pipe, a clamping ring, a guide sleeve, a plug, a first spring, a rubber stick, a lateral pin, a pin-hanging type drill and a pin-hanging type front joint. The check valve is a one-way valve and provided with a valve seat and a second spring. The piston is a long-and-thin-shaped piston with a hole path. The air-distribution rod and an air inlet seat at the back end of the check valve are of an integrated structure. The internal cylinder is placed outside the air-distribution rod and the piston. In the process of piston motion, the matched end of the piston and the air-distribution rod is in the internal cylinder all the time, a cavity is formed between part of the piston and the outer casing pipe, and other parts of the piston are matched with the internal cylinder. According to the middle-low air pressure down-hole hammer, the air distribution rod and the valve seat of the check valve are integrated, the structure is simple, the functions of locating, vibration damping and air suction can be achieved, and stability and reliability are achieved in the process of work. Contact portions of the piston and the internal cylinder are reduced, and therefore the internal cylinder is wear-resisting, and working pressure ranges of the hammer are wide.
Description
Technical field
The present invention relates to a kind of pneumatic impact equipment, relate in particular to low air-pressure down-the-hole hammer in a kind of hanging lock type.
Background technology
Down-the-hole air hammer is a kind of typical pneumatic impact equipment, and it is the drilling tool of down-the-hole drill, is the operating mechanism that rig is implemented boring.This equipment is mainly used in Drilling diameter 65-305mm, hole depth 60m driling explosion hole.Its mesoporous is that 65-105mm left and right bore operation is generally all completed by mesolow down-the-hole drilling tool.
At present, the low air-pressure down-the-hole hammer characteristics of using on market are provided with valve block in being, the commutation by valve block realizes that the forward and backward air chamber that enters impactor that compressed air replaces completes the distribution action, make finally that piston is capable becomes reciprocal motion.As shown in Figure 1, it is comprised of 18 parts, joint, 2-non retern valve, spring, 4-rubber ring, 5-valve gap, 6-valve block, 7-guide pipe, 8-distribution bar, 9-inner casing, 10-piston, 11-outer tube, 12-fairlead, 3-obstruction, 14-spring, 15-rubber bar, 16-lateral pin, 17-front connector, 18-drill bit after 1-are the parts that impactor is connected with drilling rod with the rear joint 1 of rectangular thread.Non retern valve 2 is to prevent that magmatic water from flowing into the one way valve of impactor and drilling rod, and spring 3 is contained in check valve gap 5.1 of valve gap and rear joint are provided with the vibration isolation rubber circle, and outer tube 11 is realized the distribution action of piston movement together with inner casing 9, distribution bar 8, fairlead 17, piston 10.Being provided with central duct elongated shape piston is directly compressed air energy to be converted to a part of mechanical movement kinetic energy, and by it, this kinetic energy is passed to drill bit 18 by the mode of colliding, so piston is a very crucial part.16 of lateral pins are for preventing that drill bit 18 from coming off.Obstruction 13, spring 14, rubber bar 15, lateral pin 16 consist of the lateral pin stop device together, and front connector 17 is to drive drill bit to rotate the front connector that reaches in upper slip, and fairlead 12 is used for fitting piston and carries out distribution.
Above-mentioned valveless twin-tub type down-the-hole air hammer has following disadvantages: 1, between valve seat and rear joint, rubber ring is housed, self just can absorb certain energy when impactor is worked, more outstanding is the aging distortion of rubber after impactor work a period of time, will produce and jump and seriously influence quality of fit between each parts, thereby reduced operating efficiency, and shortened the working life of impactor.2, the thin and long structure of inner casing makes its processing more complicated, and cost of manufacture is high; And the inner casing two ends are in stress all the time.So be one of key point that affects impactor application life and stability for consumable accessory because of it.3, piston moves back and forth in inner casing all the time, has added the wearing and tearing of inner casing huge.4, more intake and exhaust road is arranged, thereby cause larger atmospheric pressure lost.5, be provided with the valve block fault rate in high.6, being subjected to inner casing is the long part of thin-walled and stressing influence, its applicable blast scope less (0.5-1.2MPa).
Summary of the invention
The technical problem to be solved in the present invention be to provide a kind of in low air-pressure down-the-hole hammer, distribution bar and check valve seat are integrated, simple in structure, can realize locating, the function of vibration damping, air inlet, reliable and stable during work; Piston and inner casing contact site minimizing, inner casing is more wear-resisting, and the impactor working pressure range is wide, can be in 5-14 kilograms per centimeter
2Work in scope.
The object of the present invention is achieved like this:
low air-pressure down-the-hole hammer in a kind of, it comprises rear joint, non retern valve, the distribution bar, piston, inner casing, outer tube, collar, fairlead, stop up, the first spring, rubber bar, lateral pin, hanging lock type drill bit and hanging lock type front connector, described non retern valve is one way valve, it has valve seat and the second spring, described piston is the elongated shape piston that has the duct, the air inlet seat of described distribution bar and non retern valve rear end is structure as a whole, inner casing is positioned at the distribution bar, the outside of piston, in the piston movement process, piston and distribution bar abutting end are in interior cylinder interior all the time, form cavity between the part of piston and outer tube, the piston remainder coordinates with inner casing.
Be provided with the cooperation supporting disk outside above-mentioned air inlet seat, coordinate supporting disk to match with inner casing, coordinate supporting disk and inner casing fitting face to be provided with an O RunddichtringO.
Above-mentioned the 2nd O RunddichtringO that is provided with on fairlead and outer tube fitting face; Be provided with rubber seal on rear joint and outer tube fitting face.
another technical scheme of the present invention is: low air-pressure down-the-hole hammer in a kind of, it comprises rear joint, non retern valve, the distribution bar, piston, inner casing, outer tube, collar, fairlead, it also is provided with snap ring, snap ring-type front connector and hanging lock type drill bit, described non retern valve is one way valve, it has valve seat and the second spring (3), described piston is the elongated shape piston that has the duct, the air inlet seat (22) of described distribution bar and non retern valve rear end is structure as a whole, inner casing is positioned at the distribution bar, the outside of piston, in the piston movement process, piston and distribution bar abutting end are in interior cylinder interior all the time, form cavity between the part of piston and outer tube, the piston remainder coordinates with inner casing.
The present invention has obtained following technique effect:
1, distribution bar, inner casing trim designs are reasonable, the large end of distribution bar is contained in the stepped hole of inner casing one end, rear joint directly is pressed in to consist of on the large end face of inner casing and distribution bar and is rigidly connected, thereby jumping when having avoided the work of distribution bar, yet the high-precision cooperation of maintenance that can be permanent has guaranteed operating efficiency.
2, distribution bar distribution bar rational in infrastructure and valve seat are the integral type structure, and the distribution bar dwindled diameter of axle ratio, are easy to processing, are difficult for deformation and fracture when work.Gas distribution channels is succinctly unobstructed, thereby has reduced the loss of energy.
3, system's gas circuit is reasonable in design, and system's distribution is the no-valve type structure, and gas circuit is unobstructed, without the Zigzag type gas circuit, greatly improves pneumatic efficiency, reduces atmospheric pressure lost.No-valve type structure distribution action is more reliable and stable, error-free motion.
4, impactor high efficiency, impactor has reasonably been adjusted quality and the impulse stroke of piston, frequency of impact and the single-impact energy of impactor have been improved, thereby can realize in various rock stratum the work of " high frequency, high energy " having improved operating efficiency (efficient has improved 20%～30% by contrast).
5, the component number is less, and is for convenience detach.
6, the impactor working pressure range is wide, can be in 5-14 kilograms per centimeter
2Work in scope.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of prior art;
Fig. 2 is the structural representation of embodiments of the invention 1;
Fig. 3 is the structural representation of embodiments of the invention 2.
The specific embodiment
as shown in Figure 2, low air-pressure down-the-hole hammer in a kind of, it comprises rear joint 1, non retern valve 2, distribution bar 4, piston 6, inner casing 5, outer tube 7, collar 8, fairlead 9, stop up 16, the first spring 17, rubber bar 18, lateral pin 19, hanging lock type drill bit 20 and hanging lock type front connector 21, described non retern valve is one way valve, it has valve seat and the second spring 3, described piston is the elongated shape piston that has the duct, it is characterized in that: the air inlet seat 22 of described distribution bar and non retern valve rear end is structure as a whole, inner casing is positioned at the distribution bar, the outside of piston, in the piston movement process, piston and distribution bar abutting end are in interior cylinder interior all the time, form cavity between the part of piston and outer tube, the piston remainder coordinates with inner casing.The described air inlet seat outside is provided with and coordinates supporting disk 23, coordinates supporting disk to match with inner casing, coordinates supporting disk and inner casing fitting face to be provided with an O RunddichtringO 12.Be provided with the 2nd O RunddichtringO 10 on fairlead and outer tube fitting face; Be provided with rubber seal 24 on rear joint and outer tube fitting face.
As Fig. 3, itself and embodiment 1 difference are, prevent the device difference that drill bit comes off, guarantee that by stopping up the 16, first spring 17, rubber bar 18, lateral pin 19 drill bit does not come off in embodiment 1, and adopt in embodiment 2, open form snap ring 11 is guaranteed that drill bit 15 does not come off, front connector 14 is rotate and slide for driving drill bit 15.Will arrange the 3rd O RunddichtringO 13 this moment between snap ring 11 and front connector.
Operating principle of the present invention is as follows:
For starting impactor, must first transfer impactor.Contact with rock when drill bit when also the jack-up piston is in position shown in Figure 2, start preparation and namely come to an end.
Gases at high pressure P by introduce in rear joint hollow duct 24 backs down non retern valve 2, through after joint macropore end gap seam 25, distribution bar outer passage 26, inner casing 5 outer walls arrive piston air supply chamber 28,29 with the circular passage 27 of outer tube 7 inwalls formation.Gases at high pressure are by air chamber 30 and the rear gas chamber 31 before cylinder of entering that replaces here.
When return began, piston was in position shown in Figure 3, and the gases at high pressure in annular chamber 27 enter front air chamber 30 pushing pistons motions through piston body surface air drain 28,29, process piston body surface.In piston return motion, when circular passage 29 was closed, front air chamber 30 air inlets stopped, and the gases at high pressure in the forward air chamber of piston expand and continue to move upward, and after piston impact end and fairlead disengagement, front air chamber 30 gases are at the bottom of bit central hole 33 drains into the hole.When piston began the return motion, the gas P of rear chamber 31 escaped at the bottom of the hole through piston centre porosity 32, bit central pore 33, and back pressure resistance suffered when making piston movement is very little; When distribution bar microcephaly began to enter the cooperation of piston formation, the return motion of piston was compressed the gas of rear gas chamber 31; When the large end motion of piston to forming opening with the interior inside wall of cylinder, gases at high pressure through the circular passage 27, piston air supply chamber 28 enters rear gas chamber 31.Due to piston movement inertia, piston slides a segment distance, makes piston stop the return motion until enter the gases at high pressure generation pressure of rear chamber 31.
During the piston stroke motion, piston moves to the opening turn-off transient of the large end of piston and the formation of the interior inside wall of cylinder under the promotion of gases at high pressure, the passage that gases at high pressure enter rear gas chamber is blocked, piston travels forward by gas expansion, after piston center hole and distribution bar lower end break away from, rear gas chamber's gas through 32,33 drain into the hole at the bottom of.This moment, the Piston knocking bit afterbody was completed stroke movement.When piston began stroke movement, the gas of front air chamber 30 continued at the bottom of bit central pore 33 is discharged to the hole; When piston and fairlead form when coordinating, the gas of front air chamber begins compression, and piston moves to connection arc groove 29 always, and gases at high pressure enter into front air chamber 30, have completed the distribution process.
Claims (4)
1. low air-pressure down-the-hole hammer in a kind, it comprises rear joint (1), non retern valve (2), distribution bar (4), piston (6), inner casing (5), outer tube (7), collar (8), fairlead (9), stop up (16), the first spring (17), rubber bar (18), lateral pin (19), hanging lock type drill bit (20) and hanging lock type front connector (21), described non retern valve is one way valve, it has valve seat and the second spring (3), described piston is the elongated shape piston that has the duct, it is characterized in that: the air inlet seat (22) of described distribution bar and non retern valve rear end is structure as a whole, inner casing is positioned at the distribution bar, the outside of piston, in the piston movement process, piston and distribution bar abutting end are in interior cylinder interior all the time, form cavity between the part of piston and outer tube, the piston remainder coordinates with inner casing.
2. low air-pressure down-the-hole hammer according to claim 1, it is characterized in that: be provided with cooperation supporting disk (23) outside described air inlet seat, coordinate supporting disk to match with inner casing, coordinate supporting disk and inner casing fitting face to be provided with an O RunddichtringO (12).
3. according to claim 2, low air-pressure down-the-hole hammer, is characterized in that: be provided with the 2nd O RunddichtringO (10) on fairlead and outer tube fitting face; Be provided with rubber seal (34) on rear joint and outer tube fitting face.
4. low air-pressure down-the-hole hammer in a kind, it comprises rear joint (1), non retern valve (2), distribution bar (4), piston (6), inner casing (5), outer tube (7), collar (8), fairlead (9), it is characterized in that: it also is provided with snap ring (11), snap ring-type front connector (14) and hanging lock type drill bit (15), described non retern valve is one way valve, it has valve seat and the second spring (3), described piston is the elongated shape piston that has the duct, the air inlet seat (22) of described distribution bar and non retern valve rear end is structure as a whole, inner casing is positioned at the distribution bar, the outside of piston, in the piston movement process, piston and distribution bar abutting end are in interior cylinder interior all the time, form cavity between the part of piston and outer tube, the piston remainder coordinates with inner casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100776111A CN103174378A (en) | 2013-03-12 | 2013-03-12 | Middle-low air pressure down-hole hammer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100776111A CN103174378A (en) | 2013-03-12 | 2013-03-12 | Middle-low air pressure down-hole hammer |
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| CN103174378A true CN103174378A (en) | 2013-06-26 |
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| CN2013100776111A Pending CN103174378A (en) | 2013-03-12 | 2013-03-12 | Middle-low air pressure down-hole hammer |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0096639B1 (en) * | 1982-06-04 | 1986-02-26 | Stenuick Freres S.A. | Drilling hammer |
| CN2734972Y (en) * | 2004-10-19 | 2005-10-19 | 阿特拉斯·科普柯(张家口)建筑矿山设备有限公司 | Valved high pressure pneumatic down-hole hammer |
| CN101575941A (en) * | 2009-06-04 | 2009-11-11 | 宜昌市五环钻机具有限责任公司 | Valveless single-cylinder low or middle wind pressure downhole air hammer |
| CN102383726A (en) * | 2011-07-11 | 2012-03-21 | 中国地质科学院探矿工艺研究所 | Air down-the-hole hammer centering casing drill |
| CN202673138U (en) * | 2012-07-23 | 2013-01-16 | 宜昌市五环钻机具有限责任公司 | Piston guide sleeve type valveless double-cylinder down-hole hammer |
| CN203114164U (en) * | 2013-03-12 | 2013-08-07 | 宜昌市五环钻机具有限责任公司 | Medium-low wind pressure down hole hammer |
-
2013
- 2013-03-12 CN CN2013100776111A patent/CN103174378A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0096639B1 (en) * | 1982-06-04 | 1986-02-26 | Stenuick Freres S.A. | Drilling hammer |
| CN2734972Y (en) * | 2004-10-19 | 2005-10-19 | 阿特拉斯·科普柯(张家口)建筑矿山设备有限公司 | Valved high pressure pneumatic down-hole hammer |
| CN101575941A (en) * | 2009-06-04 | 2009-11-11 | 宜昌市五环钻机具有限责任公司 | Valveless single-cylinder low or middle wind pressure downhole air hammer |
| CN102383726A (en) * | 2011-07-11 | 2012-03-21 | 中国地质科学院探矿工艺研究所 | Air down-the-hole hammer centering casing drill |
| CN202673138U (en) * | 2012-07-23 | 2013-01-16 | 宜昌市五环钻机具有限责任公司 | Piston guide sleeve type valveless double-cylinder down-hole hammer |
| CN203114164U (en) * | 2013-03-12 | 2013-08-07 | 宜昌市五环钻机具有限责任公司 | Medium-low wind pressure down hole hammer |
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Application publication date: 20130626 |