CN202745682U - Large-diameter DTH (down the hole) hammer impactor - Google Patents
Large-diameter DTH (down the hole) hammer impactor Download PDFInfo
- Publication number
- CN202745682U CN202745682U CN 201220481698 CN201220481698U CN202745682U CN 202745682 U CN202745682 U CN 202745682U CN 201220481698 CN201220481698 CN 201220481698 CN 201220481698 U CN201220481698 U CN 201220481698U CN 202745682 U CN202745682 U CN 202745682U
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- hole
- impact head
- cylinder sleeve
- valve seat
- steel tube
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Abstract
The utility model discloses a large-diameter DTH (down the hole) hammer impactor. A tool joint is connected to an upper opening of a steel tube, a one-way valve is arranged in an inner hole of the steel tube, an air inlet cavity is reserved between the upper end face of a valve seat and the tool joint, the air inlet cavity is communicated with an air inlet hole formed in the tool joint, the outer circle of the lower part of the valve seat is provided with a circular groove, the circular groove and the air inlet cavity are communicated through a vertical hole of the valve seat, a cylinder sleeve is nested in the inner hole of the steel tube, an impact head is arranged in the inner hole of the steel tube and can move up and down in the inner hole, an upper column body of the impact head is in sliding fit with an inner hole of the cylinder sleeve, a lower column body is in sliding fit with the inner hole of the steel tube, the upper section of the column surface of the lower column body is provided with a bar-shaped slot, and the inner hole of the steel tube, corresponding to the lower section of the column surface, is provided with an annular groove, the impact head is provided with an axial through hole penetrating through the impact head, and the bottom surface of the valve seat is provided with a plunger corresponding to the axial through hole. The large-diameter DTH hammer impactor disclosed by the utility model is simple and reliable in structure, and can meet the continuously increased technical requirements of DTH drilling machines.
Description
Technical field
The utility model relates to a kind of down-hole hammer of down-the-hole drill, is specifically related to a kind of impactor of heavy caliber down-hole hammer.
Background technology
Down-the-hole drill is a kind of building engineering equipment of pile hole, is applicable to various geological environments.The critical piece of down-the-hole drill comprises down-hole hammer, down-hole hammer is comprised of impactor and jump bit, the effect of impactor is that the impact capitate becomes bump, by jump bit the lithosphere of stake hole bottom (or frozen soil layer, layer of sand, macadam etc.) is washed into fragment, then takes out fragment stake hole and forms.The down-hole hammer impactor of prior art, particularly heavy caliber down-hole hammer impactor, complex structure, it is unreliable to work, and more and more is unfavorable for the technical work requirement that down-the-hole drill constantly promotes.
Summary of the invention
In view of the problem that present known technology exists, the technical problems to be solved in the utility model is the heavy caliber down-hole hammer impactor that is to provide a kind of reliable operation simple in structure.
The utility model is implemented by following technical solution:
Heavy caliber down-hole hammer impactor, it is characterized in that: comprise steel pipe, tool joint, one way valve, cylinder sleeve and impact head, it is suitable for reading that tool joint is connected in steel pipe, one way valve is located at steel tube inner hole, one way valve comprises valve head, spring and valve seat, leave inlet chamber between valve seat upper surface and the tool joint, inlet chamber communicates with the air inlet that tool joint is provided with, valve head is located at the valve seat top, spring is located at the valve head bottom, valve head is blocked air inlet under spring action, part is sheathed at cylinder sleeve bore under the valve seat, the cylindrical of part is provided with cannelure under the valve seat, cannelure communicates with the vertical hole of inlet chamber by valve seat, cylinder sleeve is sheathed at steel tube inner hole, leave the air-flow passageway between cylinder sleeve cylindrical and the steel tube inner hole, the air-flow passageway communicates by the upper transverse holes that cylinder sleeve is provided with cannelure, cylinder sleeve also is provided with lower transverse holes, cylinder sleeve bore between the transverse holes is provided with vertical slot up and down, described impact head arranges in the cylinder sleeve underside, impact head is the large cylinder in middle little two, upper cylinder and cylinder sleeve bore are slidingly matched, lower prop and steel tube inner hole are slidingly matched, the cylinder epimere of lower prop is provided with bar-shaped trough, and the steel tube inner hole corresponding with the cylinder hypomere is provided with annular groove, and impact head is provided with and runs through axially extending bore up and down, the bottom surface of described valve seat is provided with the plunger corresponding with axially extending bore, the plunger cylindrical, surround air chamber between cylinder sleeve bore and the impact head upper surface; Lower position at impact head, bar-shaped trough and annular groove partly intersect, gases at high pressure arrive the impact head bottom through inlet chamber, vertical hole, cannelure, upper transverse holes, air-flow passageway, bar-shaped trough, annular groove, upper limit position at impact head, bar-shaped trough and annular groove stagger fully, gases at high pressure enter air chamber through inlet chamber, vertical hole, cannelure, upper transverse holes, air-flow passageway, lower transverse holes, vertical slot, and the while plunger enters axially extending bore axially extending bore is blocked.
Technique scheme is simple in structure, the course of work is such: in the lower position of impact head, bar-shaped trough and annular groove partly intersect, gases at high pressure enter and promote valve head from the air inlet of tool joint and move downwards, gases at high pressure enter inlet chamber, then gases at high pressure are through vertical hole, cannelure, upper transverse holes, the air-flow passageway, bar-shaped trough, annular groove arrives the bottom of impact head, so gases at high pressure promote upwards action of impact head, when the impact head certain distance that moves upward arrives upper limit position, plunger entered axially extending bore axially extending bore was blocked this moment, bar-shaped trough and annular groove stagger fully, blocked the bottom of gases at high pressure by annular groove arrival impact head, gases at high pressure are through inlet chamber, vertical hole, cannelure, upper transverse holes, the air-flow passageway, lower transverse holes, vertical slot enters air chamber, pounding the impact capitate under gases at high pressure promotion impact head is rapid becomes to impact, gases at high pressure blow out outward by the bottom of axially extending bore from jump bit simultaneously, after one-shot is finished, impact head is got back to original position, impact head will be again upwards lifted by gases at high pressure to be pounded under rear, thereby the impact capitate becomes bump, the pile hole work of down-the-hole drill is constantly deeply carried out, the above-mentioned course of work is reliable and stable, can satisfy well the technical work requirement that down-the-hole drill constantly promotes.
Description of drawings
The utility model has following accompanying drawing:
Fig. 1 is structural representation of the present utility model.
The specific embodiment
Describe details and the operating principle of the utility model specific embodiment in detail below in conjunction with accompanying drawing:
As shown in the figure, heavy caliber down-hole hammer impactor of the present utility model, comprise steel pipe 1, tool joint 8, one way valve, cylinder sleeve 5 and impact head 2, it is suitable for reading that tool joint 8 is threadedly connected to steel pipe 1, one way valve is located at steel pipe 1 endoporus, one way valve comprises valve head 10, spring 7 and valve seat 6, leave inlet chamber 11 between valve seat 6 upper surfaces and the tool joint 8, inlet chamber 11 communicates with the air inlet 9 that tool joint is provided with, valve head 10 is located at valve seat 6 tops, spring 7 is located at valve head 10 bottoms, 10 pairs of air inlets 9 of valve head are blocked under spring 7 effects, 6 times parts of valve seat are sheathed at cylinder sleeve 5 endoporus, the cylindrical of 6 times parts of valve seat is provided with cannelure 13, cannelure 13 communicates with the vertical hole 12 of inlet chamber 11 by valve seat, cylinder sleeve 5 is sheathed at steel pipe 1 endoporus, leave air-flow passageway 15 between cylinder sleeve 5 cylindricals and steel pipe 1 endoporus, air-flow passageway 15 communicates by the upper transverse holes 14 that cylinder sleeve is provided with cannelure 13, cylinder sleeve also is provided with lower transverse holes 17, cylinder sleeve bore between the transverse holes is provided with vertical slot 16 up and down, described impact head 2 is in cylinder sleeve 5 underside settings, impact head 2 is the large cylinder in middle little two, upper cylinder and cylinder sleeve 5 endoporus are slidingly matched, lower prop and steel pipe 1 endoporus are slidingly matched, the cylinder epimere of lower prop is provided with bar-shaped trough 19, steel pipe 1 endoporus corresponding with the cylinder hypomere is provided with annular groove 20, impact head 2 is provided with the axially extending bore 18 that runs through up and down, and the bottom surface of described valve seat 6 is provided with the plunger 3 corresponding with axially extending bore 18, plunger 3 cylindricals, surround air chamber 4 between cylinder sleeve 5 endoporus and impact head 2 upper surfaces; Lower position at impact head 2, bar-shaped trough 19 and annular groove 20 parts are intersected, gases at high pressure arrive impact head 2 bottoms through inlet chamber 11, vertical hole 12, cannelure 13, upper transverse holes 14, air-flow passageway 15, bar-shaped trough 19, annular groove 20, upper limit position at impact head 2, bar-shaped trough 19 and annular groove 20 stagger fully, gases at high pressure enter air chamber 4 through inlet chamber 11, vertical hole 12, cannelure 13, upper transverse holes 14, air-flow passageway 15, lower transverse holes 17, vertical slot 16, and while plunger 3 enters 18 pairs of axially extending bores 18 of axially extending bore and blocks.In addition in the drawings, the jump bit 21 of heavy caliber down-hole hammer is connected in the bottom of steel pipe 1, and the top of jump bit 21 contacts with the bottom of impact head 2, and jump bit 21 is by steel pipe 1 driven rotary.
The utility model is like this work: in the lower position of impact head, gases at high pressure enter and promote valve head 10 from the air inlet 9 of tool joint 8 and move downwards, gases at high pressure enter inlet chamber 11, then gases at high pressure are through vertical hole 12, cannelure 13, upper transverse holes 14, air-flow passageway 15, bar-shaped trough 19, annular groove 20 arrives the bottom of impact head 2, so gases at high pressure promote upwards action of impact head 2, when impact head 2 certain distance that moves upward arrives upper limit position, plunger 3 entered 18 pairs of axially extending bores 18 of axially extending bore and blocked this moment, bar-shaped trough 19 and annular groove 20 stagger fully, blocked the bottom of gases at high pressure by annular groove 20 arrival impact heads 2, gases at high pressure are through inlet chamber 11, vertical hole 12, cannelure 13, upper transverse holes 14, air-flow passageway 15, lower transverse holes 17, vertical slot 16 enters air chamber 4, gases at high pressure promote impact head 2 rapidly the lower hammer 21 that liquidates of pounding form impacts, the gases at high pressure that simultaneously acting is finished blow out outward by the base bleed hole of axially extending bore 18 from jump bit 21, after one-shot is finished, impact head is got back to original position, impact head will be again upwards lifted by gases at high pressure to be pounded under rear, thereby the impact capitate becomes bump, and the pile hole work of down-the-hole drill is constantly deeply carried out.
Claims (1)
1. heavy caliber down-hole hammer impactor, it is characterized in that: comprise steel pipe, tool joint, one way valve, cylinder sleeve and impact head, it is suitable for reading that tool joint is connected in steel pipe, one way valve is located at steel tube inner hole, one way valve comprises valve head, spring and valve seat, leave inlet chamber between valve seat upper surface and the tool joint, inlet chamber communicates with the air inlet that tool joint is provided with, valve head is located at the valve seat top, spring is located at the valve head bottom, valve head is blocked air inlet under spring action, part is sheathed at cylinder sleeve bore under the valve seat, the cylindrical of part is provided with cannelure under the valve seat, cannelure communicates with the vertical hole of inlet chamber by valve seat, cylinder sleeve is sheathed at steel tube inner hole, leave the air-flow passageway between cylinder sleeve cylindrical and the steel tube inner hole, the air-flow passageway communicates by the upper transverse holes that cylinder sleeve is provided with cannelure, cylinder sleeve also is provided with lower transverse holes, cylinder sleeve bore between the transverse holes is provided with vertical slot up and down, described impact head arranges in the cylinder sleeve underside, impact head is the large cylinder in middle little two, upper cylinder and cylinder sleeve bore are slidingly matched, lower prop and steel tube inner hole are slidingly matched, the cylinder epimere of lower prop is provided with bar-shaped trough, the steel tube inner hole corresponding with the cylinder hypomere is provided with annular groove, impact head is provided with and runs through axially extending bore up and down, the bottom surface of described valve seat is provided with the plunger corresponding with axially extending bore, the plunger cylindrical, surround air chamber between cylinder sleeve bore and the impact head upper surface; Lower position at impact head, bar-shaped trough and annular groove partly intersect, gases at high pressure arrive the impact head bottom through inlet chamber, vertical hole, cannelure, upper transverse holes, air-flow passageway, bar-shaped trough, annular groove, upper limit position at impact head, bar-shaped trough and annular groove stagger fully, gases at high pressure enter air chamber through inlet chamber, vertical hole, cannelure, upper transverse holes, air-flow passageway, lower transverse holes, vertical slot, and the while plunger enters axially extending bore axially extending bore is blocked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220481698 CN202745682U (en) | 2012-09-20 | 2012-09-20 | Large-diameter DTH (down the hole) hammer impactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220481698 CN202745682U (en) | 2012-09-20 | 2012-09-20 | Large-diameter DTH (down the hole) hammer impactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202745682U true CN202745682U (en) | 2013-02-20 |
Family
ID=47705099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220481698 Expired - Fee Related CN202745682U (en) | 2012-09-20 | 2012-09-20 | Large-diameter DTH (down the hole) hammer impactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202745682U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481396A (en) * | 2014-11-14 | 2015-04-01 | 刘国经 | Injection-type hydraulic dive-hole hammer of plunger valve |
| CN105353404A (en) * | 2015-12-02 | 2016-02-24 | 西南石油大学 | Gas drilling shaft bottom near-bit continuous impact focus nipple |
-
2012
- 2012-09-20 CN CN 201220481698 patent/CN202745682U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481396A (en) * | 2014-11-14 | 2015-04-01 | 刘国经 | Injection-type hydraulic dive-hole hammer of plunger valve |
| CN104481396B (en) * | 2014-11-14 | 2016-06-22 | 刘国经 | Plunger valve jet absorption type hydraulic hole drilling hammer |
| CN105353404A (en) * | 2015-12-02 | 2016-02-24 | 西南石油大学 | Gas drilling shaft bottom near-bit continuous impact focus nipple |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130220 Termination date: 20140920 |
|
| EXPY | Termination of patent right or utility model |