CN204457419U - Mesohigh down-the-hole air hammer - Google Patents
Mesohigh down-the-hole air hammer Download PDFInfo
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- CN204457419U CN204457419U CN201520069763.1U CN201520069763U CN204457419U CN 204457419 U CN204457419 U CN 204457419U CN 201520069763 U CN201520069763 U CN 201520069763U CN 204457419 U CN204457419 U CN 204457419U
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- piston
- inner casing
- outer shell
- mesohigh
- air
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Abstract
The utility model relates to the technical field of the equipment of down-the-hole drill, especially a kind of mesohigh down-the-hole air hammer is related to, comprise outer shell and be installed in the front connector of outer shell rear and front end and rear joint, rear joint is connected with non-return device, front connector connects piston, described non-return device and piston are all arranged in outer shell, the front side of described non-return device is connected with inner casing, inner chamber and the piston of inner casing are slidably connected, be provided with the first airway between inner casing and the internal chamber wall of outer shell, between piston and the internal chamber wall of inner casing, be provided with the second airway.Advantage is: efficiency is high, energy-conservation, structure simple, and I& M is extremely convenient and swift, the phenomenon that Long-Time Service there will not be cylinder to split, and does not affect normal construction.
Description
Technical field
The utility model relates to the technical field of the equipment of down-the-hole drill, especially relates to a kind of mesohigh down-the-hole air hammer.
Background technology
Mesohigh down-the-hole air hammer is widely used in the main explosion project of the engineerings such as mining, power station, harbour, speedway, urban construction, and in most of engineering infrastructure such as building site piling, well, underground heat.If Chinese patent notification number is CN202578498U, patent name is " mesohigh down-the-hole air hammer ", its basic structure is installing front and back, the rear and front end joint adopting outer shell, and in outer shell, installing non retern valve, distribution seat, distribution bar, piston etc., adopt distribution bar, piston distribution principle.Along with current object of construction production increase and construction period shorter, original impactor structure cannot meet high, the energy-conservation job requirement of current efficiency, and complicated structure, very inconvenient when making I& M, and installation effectiveness is also lower, the piston of simultaneously this impactor have some pores, make in the process of work, the unbalanced stress born of piston itself, after long-term use, easily there is the phenomenon of impact piston initial failure, cause very large impact to normal construction and maintenance.
Summary of the invention
For the deficiency that above-mentioned prior art exists, the purpose of this utility model is to provide that a kind of efficiency is high, energy-conservation, structure is simple, and I& M is extremely convenient and swift, Long-Time Service there will not be the phenomenon of impact piston initial failure, does not affect the mesohigh down-the-hole air hammer of normal construction.
For realizing above-mentioned object, the utility model provides following technical scheme:
A kind of mesohigh down-the-hole air hammer, comprise outer shell and be installed in the front connector of outer shell rear and front end and rear joint, rear joint is connected with non-return device, front connector connects piston, described non-return device and piston are all arranged in outer shell, and the front side of described non-return device is connected with inner casing, and inner chamber and the piston of inner casing are slidably connected, be provided with the first airway between inner casing and the internal chamber wall of outer shell, between piston and the internal chamber wall of inner casing, be provided with the second airway.
The utility model is set to further: the concrete structure of described first airway is: outer shell is arranged with the first air channel of annular on the internal chamber wall at inner casing place, the front side of inner casing sidewall is circumferentially with the front air vent that at least two are communicated with inner casing inner chamber and the first air channel, the rear end face of inner casing is circumferentially with at least two rear air vents communicated with the first air channel, the first air channel when inner casing moves forward and backward with air vent before inner casing or/and rear air vent communicates.
The utility model is set to further: the concrete structure rear end face of described inner casing being circumferentially with the rear air vent that at least two communicate with the first air channel is: the rear end face of inner casing offers the installing hole communicated with its inner chamber, installing hole tightens Guan County and valve seat is housed, valve seat is circumferentially with at least two grooves, the rear side of described inner casing sidewall is provided with and matches and the through hole communicated with corresponding groove with number of recesses and position.
The utility model is set to further: described non-return device comprises the valve rod on being located in rear joint in spool top blow vent, is provided with back-moving spring between valve rod and described valve seat.
The utility model is set to further: the end face that described valve rod is relative with valve seat two is equipped with cavity, and described back-moving spring is located between two cavitys, and the front end of valve rod extend valve seat cavity in and can slide along this cavity interior walls.
The utility model is set to further: the concrete structure of described second air vent is: the middle part of piston is provided with necking part, be provided with at least two mutual disjunct fore edge grooves to necking part direction in the middle part of the front end side wall of piston, fore edge groove communicates with necking part, the rear end sidewall of piston is provided with to back end at least two mutual disjunct rear grooves of the notch, the rear groove of the notch does not communicate with necking part; The intracavity sidewall at the piston place of described outer shell is provided with the second air channel of annular, the second air channel when piston moves forward and backward with the fore edge groove of piston or/and necking part communicates; The middle part of the intracavity sidewall of described inner casing is arranged with the 3rd air channel of annular, the 3rd air channel when piston moves forward and backward with the rear groove of the notch of piston or/and necking part communicates.
The utility model is set to further: the front end face of described piston is provided with piston guide rod, and piston guide rod is arranged with fairlead, is tightly connected between fairlead and outer shell intracavity sidewall.
The utility model is set to further: be provided with snap ring in the interface of one end that described front connector connects with piston guide rod.
By adopting technique scheme, the technique effect that the utility model reaches is: by arranging inner casing and inner casing coordinates with piston with outer shell, inner casing, by arranging the first airway and the second airway, make that the efficiency of product is high, energy-conservation, structure is simple, and I& M is extremely convenient and swift, Long-Time Service there will not be cylinder to split and the phenomenon of piston initial failure, does not affect normal construction.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is detonation configuration principle schematic of the present utility model.
Fig. 2 is the structural principle schematic diagram of inner casing of the present utility model.
Fig. 3 is the structural principle schematic diagram of piston of the present utility model.
Fig. 4 is cross-section structure principle schematic of the present utility model.
Fig. 5 is the partial enlargement structural principle schematic diagram of part A in Fig. 4 of the present utility model.
Fig. 6 is the partial enlargement structural principle schematic diagram of part B in Fig. 4 of the present utility model.
Detailed description of the invention
As shown in Figures 1 to 6, a kind of mesohigh down-the-hole air hammer disclosed in the utility model, outer shell 10 rear and front end is equiped with front connector 11 and rear joint 12, rear joint 12 is connected with non-return device, front connector 11 connects piston 13, non-return device and piston 13 are all arranged in outer shell 10, the front side of non-return device is connected with inner casing 14, inner chamber and the piston 13 of inner casing 14 are slidably connected, generally, adopt the principle of oil lubrication sealing to carry out sealing being slidably connected, can certainly be that graphite grazing is slidably connected, the first airway is provided with between the internal chamber wall of inner casing 14 and outer shell 10, the concrete structure of the first airway is: outer shell 10 is arranged with the first air channel 16 of annular on the internal chamber wall at inner casing 14 place, the front side of inner casing 14 sidewall is circumferentially with the front air vent 15 that at least two are communicated with inner casing 14 inner chamber and the first air channel 16, the rear end face of inner casing 14 is circumferentially with at least two rear air vents communicated with the first air channel 16, first air channel also can be communicated with by the fluted air channel of connection two cannelure between two cannelures arranged side by side, equally also can be several the parallel fluted air channel arranged vertically, first air channel 16 when inner casing 14 moves forward and backward with air vent 15 before inner casing 14 or/and rear air vent communicates.Wherein, the concrete structure of air vent is: the rear end face of inner casing 14 offers the installing hole communicated with its inner chamber, installing hole tightens Guan County and valve seat 17 is housed, the mode of fastening installation can be spirally connected, it can certainly be the mode of welding, valve seat 17 is circumferentially with at least two grooves 18, the rear side of inner casing 14 sidewall is provided with and matches and the through hole 19 communicated with corresponding groove 18 with groove 18 quantity and position, also can be vertically be drilled with several blind hole, then bore several hole at the rear side relative position of inner casing 14 sidewall and communicate with these blind holes.
In above-mentioned, between piston 13 and inner casing 14, be provided with the second airway.The concrete structure of the second air vent is: the middle part of piston 13 is provided with necking part 23, at least two mutual disjunct fore edge grooves 24 are provided with to necking part 23 direction in the middle part of the front end side wall of piston 13, fore edge groove 24 communicates with necking part 23, certain necking part here also can adopt the vent grooves offered at the middle part of piston 13 and match with fore edge groove 24 position, the rear end sidewall of piston is provided with to back end at least two mutual disjunct rear grooves of the notch 25, the rear groove of the notch 25 does not communicate with necking part 23; The intracavity sidewall at piston 13 place of described outer shell 10 is provided with the second air channel 26 of annular, second air channel 26 also can patten's design as the first air channel, the second air channel 26 when piston 13 moves forward and backward with the fore edge groove 24 of piston 13 or/and necking part 23 communicates; The middle part of the intracavity sidewall of described inner casing 14 is arranged with the 3rd air channel 27 of annular, 3rd air channel 27 also can patten's design as the first air channel, the 3rd air channel 27 when piston 13 moves forward and backward with the rear groove of the notch 25 of piston 13 or/and necking part 23 communicates.
In above-mentioned, non-return device comprises the valve rod 20 on being located in rear joint 12 in spool top blow vent, is provided with back-moving spring 21 between valve rod 20 and described valve seat 17.The end face that wherein valve rod 20 is relative with valve seat 17 liang is equipped with cavity 22, and described back-moving spring 21 is located between two cavitys 22, and the front end of valve rod 20 extend valve seat 17 cavity 22 in and can slide along this cavity 22 inwall.The front end face of piston 13 is provided with piston guide rod 28, piston guide rod 28 is arranged with fairlead 29, is tightly connected between fairlead 29 and outer shell 10 intracavity sidewall.Snap ring 30 is provided with in the interface of one end that described front connector 11 connects with piston guide rod 28.
To sum up, the scope of the mesohigh in the present embodiment is 12 ~ 16bar.
Above-described embodiment is only preferred embodiment of the present utility model, not limits protection domain of the present utility model according to this, therefore: all equivalence changes done according to structure of the present utility model, shape, principle, all should be covered by within protection domain of the present utility model.
Claims (8)
1. a mesohigh down-the-hole air hammer, comprise outer shell and be installed in the front connector of outer shell rear and front end and rear joint, rear joint is connected with non-return device, front connector connects piston, described non-return device and piston are all arranged in outer shell, it is characterized in that: the front side of described non-return device is connected with inner casing, and inner chamber and the piston of inner casing are slidably connected, be provided with the first airway between inner casing and the internal chamber wall of outer shell, between piston and the internal chamber wall of inner casing, be provided with the second airway.
2. mesohigh down-the-hole air hammer according to claim 1, it is characterized in that: the concrete structure of described first airway is: outer shell is arranged with the first air channel of annular on the internal chamber wall at inner casing place, the front side of inner casing sidewall is circumferentially with the front air vent that at least two are communicated with inner casing inner chamber and the first air channel, the rear end face of inner casing is circumferentially with at least two rear air vents communicated with the first air channel, the first air channel when inner casing moves forward and backward with air vent before inner casing or/and rear air vent communicates.
3. mesohigh down-the-hole air hammer according to claim 2, it is characterized in that: the concrete structure rear end face of described inner casing being circumferentially with the rear air vent that at least two communicate with the first air channel is: the rear end face of inner casing offers the installing hole communicated with its inner chamber, installing hole tightens Guan County and valve seat is housed, valve seat is circumferentially with at least two grooves, the rear side of described inner casing sidewall is provided with and matches and the through hole communicated with corresponding groove with number of recesses and position.
4. mesohigh down-the-hole air hammer according to claim 3, is characterized in that: described non-return device comprises the valve rod on being located in rear joint in spool top blow vent, is provided with back-moving spring between valve rod and described valve seat.
5. mesohigh down-the-hole air hammer according to claim 4, it is characterized in that: the end face that described valve rod is relative with valve seat two is equipped with cavity, described back-moving spring is located between two cavitys, and the front end of valve rod extend valve seat cavity in and can slide along this cavity interior walls.
6. mesohigh down-the-hole air hammer according to claim 1, it is characterized in that: the concrete structure of described second air vent is: the middle part of piston is provided with necking part, be provided with at least two mutual disjunct fore edge grooves to necking part direction in the middle part of the front end side wall of piston, fore edge groove communicates with necking part, the rear end sidewall of piston is provided with to back end at least two mutual disjunct rear grooves of the notch, the rear groove of the notch does not communicate with necking part; The intracavity sidewall at the piston place of described outer shell is provided with the second air channel of annular, the second air channel when piston moves forward and backward with the fore edge groove of piston or/and necking part communicates; The middle part of the intracavity sidewall of described inner casing is arranged with the 3rd air channel of annular, the 3rd air channel when piston moves forward and backward with the rear groove of the notch of piston or/and necking part communicates.
7. mesohigh down-the-hole air hammer according to claim 6, is characterized in that: the front end face of described piston is provided with piston guide rod, and piston guide rod is arranged with fairlead, is tightly connected between fairlead and outer shell intracavity sidewall.
8. mesohigh down-the-hole air hammer according to claim 7, is characterized in that: be provided with snap ring in the interface of one end that described front connector connects with piston guide rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520069763.1U CN204457419U (en) | 2015-01-31 | 2015-01-31 | Mesohigh down-the-hole air hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520069763.1U CN204457419U (en) | 2015-01-31 | 2015-01-31 | Mesohigh down-the-hole air hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204457419U true CN204457419U (en) | 2015-07-08 |
Family
ID=53664321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520069763.1U Expired - Fee Related CN204457419U (en) | 2015-01-31 | 2015-01-31 | Mesohigh down-the-hole air hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204457419U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109184551A (en) * | 2018-11-21 | 2019-01-11 | 长沙黑金刚实业有限公司 | impactor |
-
2015
- 2015-01-31 CN CN201520069763.1U patent/CN204457419U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109184551A (en) * | 2018-11-21 | 2019-01-11 | 长沙黑金刚实业有限公司 | impactor |
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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: 20150708 Termination date: 20170131 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |