CN203114164U - Medium-low wind pressure down hole hammer - Google Patents
Medium-low wind pressure down hole hammer Download PDFInfo
- Publication number
- CN203114164U CN203114164U CN 201320110633 CN201320110633U CN203114164U CN 203114164 U CN203114164 U CN 203114164U CN 201320110633 CN201320110633 CN 201320110633 CN 201320110633 U CN201320110633 U CN 201320110633U CN 203114164 U CN203114164 U CN 203114164U
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- piston
- inner casing
- distribution bar
- valve
- outer tube
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Abstract
A medium-low wind pressure down hole hammer comprises a rear joint, a check valve, an air distribution rod, a piston, an internal cylinder, an outer sleeve pipe, a clamping ring, a guide sleeve, a choke plug, a first spring, a rubber stick, a transverse pin, a hanging pin type drill and a hanging pin type front joint, wherein 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 piston where a hole channel is formed, the air distribution rod and an air inlet seat at the rear end of the check valve are of an integrated structure, and the internal cylinder is located outside the air distribution rod and the piston. In the moving process of the piston, the end, matched with the air distribution rod, of the piston is located in the internal cylinder all the time, a cavity is formed between one part of the piston and the outer sleeve pipe, and the other part of the piston is matched with the internal cylinder. The air distribution rod and the check valve seat are combined into a whole, the structure is simple, the functions of positioning, vibration attenuation and air admission can be achieved, and the medium-low wind pressure down hole hammer is stable and reliable when working; and the contact portion of the piston and the internal cylinder is reduced, the internal cylinder is more wear-resistant, and the hammer is wide in range of working pressure.
Description
Technical field
The utility model relates to a kind of Pneumatic immpacting equipment, relates in particular to low blast down-the-hole air hammer in a kind of hanging lock type.
Background technology
Down-the-hole air hammer is a kind of typical Pneumatic immpacting 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.Wherein the aperture is that 65-105mm left and right sides bore operation is generally all finished by mesolow down-the-hole drilling tool.
At present, the low blast down-the-hole air hammer characteristics of using on the 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 finishes the distribution action, make finally that piston is capable to become reciprocal motion.See shown in Figure 1, it is made up 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 behind the 1-, the back joint 1 that has rectangular thread is the parts that impactor is connected with drilling rod.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 the check valve gap 5.Valve gap and 1 of the joint in back are provided with the vibration isolation rubber circle, and outer tube 11 is realized the distribution action of piston motion together with inner casing 9, distribution bar 8, fairlead 17, piston 10.Being provided with central duct elongated shape piston is to be a part of mechanical movement kinetic energy with compressed-air actuated power conversion directly, 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 constitute the lateral pin stop device together, and front connector 17 is to drive drill bit to rotate the front connector that reaches sliding, and fairlead 12 carries out distribution for fitting piston.
Above-mentioned valveless twin-tub type down-the-hole air hammer has following disadvantages: 1, between valve seat and the back joint rubber ring is housed, when working, impactor self just can absorb certain energy, 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, cost of manufacture height; And the inner casing two ends are in stress all the time.Because it is so that consumable accessory is one of key point that influences impactor application life and stability.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 bigger atmospheric pressure lost.5, be provided with valve block fault rate height in.6, being subjected to inner casing is the long part of thin-walled and stressing influence, its suitable blast scope less (0.5-1.2MPa).
Summary of the invention
The technical problems to be solved in the utility model provide a kind of in low blast down-the-hole air 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 reduce, and inner casing is more wear-resisting, and the impactor working pressure range is wide, can work in 5-14 kilograms per centimeter, 2 scopes.
The purpose of this utility model is achieved in that
Low blast down-the-hole air hammer in a kind of, it comprises the back joint, non retern valve, the distribution bar, piston, inner casing, outer tube, collar, fairlead, stop up, 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 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 motion process, piston and distribution bar abutting end are in interior cylinder interior all the time, form cavity between the part of piston and the outer tube, the piston remainder cooperates with inner casing.
The above-mentioned air inlet seat outside is provided with the cooperation supporting disk, cooperates supporting disk to match with inner casing, cooperates supporting disk and inner casing fitting face to be provided with an O RunddichtringO.
Above-mentionedly be provided with the 2nd O RunddichtringO at fairlead and outer tube fitting face; Be provided with rubber seal at back joint and outer tube fitting face.
Another technical scheme of the present utility model is: low blast down-the-hole air hammer in a kind of, it comprises the back 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 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 motion process, piston and distribution bar abutting end are in interior cylinder interior all the time, form cavity between the part of piston and the outer tube, the piston remainder cooperates with inner casing.
The utility model has been obtained following technique effect:
1, distribution bar, inner casing trim designs are reasonable, the big end of distribution bar is contained in the stepped hole of inner casing one end, back joint directly is pressed in to constitute 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 integral structure, and the distribution bar dwindled diameter of axle ratio, are easy to processing, not yielding 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 valveless formula structure, and unobstructed, the no Zigzag type gas circuit of gas circuit improves pneumatic efficiency greatly, reduces atmospheric pressure lost.Valveless formula structure distribution action is more reliable and stable, no misoperation.
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 the work of " high frequency, high energy " in various rock stratum, improve 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 work in 5-14 kilograms per centimeter, 2 scopes.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the prior art constructions schematic diagram;
Fig. 2 is the structural representation of embodiment 1 of the present utility model;
Fig. 3 is the structural representation of embodiment 2 of the present utility model.
The specific embodiment
Embodiment 1
As shown in Figure 2, low blast down-the-hole air hammer in a kind of, it comprises back joint 1, non retern valve 2, distribution bar 4, piston 6, inner casing 5, outer tube 7, collar 8, fairlead 9, stop up 16, 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 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 motion process, piston and distribution bar abutting end are in interior cylinder interior all the time, form cavity between the part of piston and the outer tube, the piston remainder cooperates with inner casing.The described air inlet seat outside is provided with and cooperates supporting disk 23, cooperates supporting disk to match with inner casing, cooperates supporting disk and inner casing fitting face to be provided with an O RunddichtringO 12.Be provided with the 2nd O RunddichtringO 10 at fairlead and outer tube fitting face; Be provided with rubber seal 24 at back joint and outer tube fitting face.
The back joint 1 that has rectangular thread is the parts that connect impactor and drilling rod.Non retern valve 2 is to prevent that magmatic water from flowing into the one way valve of impactor and drilling rod, and distribution bar 4 and air inlet seat 22 are integrated, and except compressed air is introduced the cylinder body, also same cylinder body, piston are realized the distribution action of piston motion together.Piston 6 is for having the elongated shape piston in duct, it is that direct power conversion with Compressed Gas is a part of mechanical movement kinetic energy, and by it this kinetic energy by the collision mode pass to drill bit 20, piston 6 moves in inner casing 5 inner casings and outer tube 7 outer tubes all the time.Fairlead 9 is the fairleads that play the distribution effect with piston.In low blast in this is novel, refer generally to 5-14 kilograms per centimeter 2.
As Fig. 3, itself and embodiment 1 difference are, prevent the device difference that drill bit comes off, guarantee that by stopping up 16, first spring 17, rubber bar 18, lateral pin 19 drill bit does not come off among the 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 to rotate and slip 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 utility model is as follows:
For starting impactor, must transfer impactor earlier.When drill bit contacts with rock and jack-up piston when being in position shown in Figure 2, start preparation and namely come to an end.
Gases at high pressure P by introduce in joint hollow duct, back 24 backs down non retern valve 2, arrives piston air supply chamber 28,29 through back joint macropore end gap seam 25, distribution bar outer passage 26, inner casing 5 outer walls 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 the cylinder of entering that replaces here.
When return began, piston was in position shown in Figure 3, and air chamber 30 promoted the piston motion before the gases at high pressure in the annular chamber 27 entered through piston body surface air drain 28,29, through the piston body surface.In the motion of piston return, when circular passage 29 was closed, preceding 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, preceding 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 back 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 the piston motion 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 big 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.Because the piston motional inertia, piston slides a segment distance, produces pressure up to the gases at high pressure that enter chamber 31, back and makes piston stop the return motion.
During the piston stroke motion, piston moves to the opening turn-off transient of the big 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 expands by gas and travels forward, 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, piston slap drill bit afterbody was finished stroke movement.When piston began stroke movement, the gas of preceding air chamber 30 continued at the bottom of bit central pore 33 is discharged to the hole; When piston and fairlead form when cooperating, the gas of preceding air chamber begins compression, and piston moves to connection arc groove 29 always, and gases at high pressure enter into preceding air chamber 30, have finished the distribution process.
Claims (4)
1. low blast down-the-hole air hammer in a kind, it comprises back joint (1), non retern valve (2), distribution bar (4), piston (6), inner casing (5), outer tube (7), collar (8), fairlead (9), stop up (16), 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 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 motion process, piston and distribution bar abutting end are in interior cylinder interior all the time, form cavity between the part of piston and the outer tube, the piston remainder cooperates with inner casing.
2. low blast down-the-hole air hammer in according to claim 1, it is characterized in that: the described air inlet seat outside is provided with and cooperates supporting disk (23), cooperate supporting disk to match with inner casing, cooperate supporting disk and inner casing fitting face to be provided with an O RunddichtringO (12).
3. low blast down-the-hole air hammer is characterized in that: be provided with the 2nd O RunddichtringO (10) at fairlead and outer tube fitting face in according to claim 2; Be provided with rubber seal (34) at back joint and outer tube fitting face.
4. low blast down-the-hole air hammer in a kind, it comprises back 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 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 motion process, piston and distribution bar abutting end are in interior cylinder interior all the time, form cavity between the part of piston and the outer tube, the piston remainder cooperates with inner casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320110633 CN203114164U (en) | 2013-03-12 | 2013-03-12 | Medium-low wind pressure down hole hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320110633 CN203114164U (en) | 2013-03-12 | 2013-03-12 | Medium-low wind pressure down hole hammer |
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| Publication Number | Publication Date |
|---|---|
| CN203114164U true CN203114164U (en) | 2013-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320110633 Expired - Lifetime CN203114164U (en) | 2013-03-12 | 2013-03-12 | Medium-low wind pressure down hole hammer |
Country Status (1)
| Country | Link |
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| CN (1) | CN203114164U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174378A (en) * | 2013-03-12 | 2013-06-26 | 宜昌市五环钻机具有限责任公司 | Middle-low air pressure down-hole hammer |
-
2013
- 2013-03-12 CN CN 201320110633 patent/CN203114164U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174378A (en) * | 2013-03-12 | 2013-06-26 | 宜昌市五环钻机具有限责任公司 | Middle-low air pressure down-hole hammer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130807 |