CN210115487U - Handheld drilling machine with built-in silencing device - Google Patents
Handheld drilling machine with built-in silencing device Download PDFInfo
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- CN210115487U CN210115487U CN201920895319.3U CN201920895319U CN210115487U CN 210115487 U CN210115487 U CN 210115487U CN 201920895319 U CN201920895319 U CN 201920895319U CN 210115487 U CN210115487 U CN 210115487U
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- shell
- silencing
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Abstract
The utility model belongs to the technical field of mechanical equipment, and relates to a handheld drilling machine with a built-in silencer, which comprises a shell; a rear cover; a front cover; the first handle is arranged on one side of the shell; the second handle is arranged on the other side of the shell; an air intake device for introducing outside air into the housing; an output shaft; partially disposed within the housing; the pneumatic power device is used for driving the output shaft to rotate; the silencing device is arranged in the shell and comprises a shell, an air inlet hole arranged on the shell, an air outlet hole arranged on the shell and a silencing structure for silencing and reducing noise, and the silencing structure is arranged in the shell; and the exhaust hole is used for exhausting the air which is silenced by the silencing device. The utility model discloses the structure sets up compactly rationally, and is small, convenient to use, and the operation is stable, and the noise reduction is effectual, and fail safe nature is high, long service life, oiling easy operation, and work efficiency is high, is worth extensively popularizing and applying.
Description
Technical Field
The utility model belongs to the technical field of mechanical equipment, a handheld rig with built-in silencing device is related to.
Background
Coal mines in China are mainly underground mining, a large number of roadways need to be excavated underground, roadway support is adopted to protect smooth roadways and surrounding rock stability, and the important significance is brought to mine construction and production, drilling operation needs to be carried out by adopting a drilling machine in the construction process of roadway support, in order to meet the underground explosion-proof safety requirement of mines, a handheld pneumatic drilling machine with underground compressed air as a power source is often adopted for construction, but the handheld pneumatic drilling machine can generate high noise during working, and the manual pneumatic drilling machine can generate fussy emotion when working for a long time in the environment, so that safety accidents are easily caused, even the symptoms such as deafness and headache of workers can be directly caused, and the body health of the workers is seriously damaged; at present, the existing solution is that a silencer is often installed at an air outlet of a shell of the drilling machine, the added silencer has poor silencing effect, the volume and the weight of the drilling machine are greatly increased, and the use is very inconvenient.
SUMMERY OF THE UTILITY MODEL
For solving the problem that proposes among the above-mentioned background art, the utility model provides a small, effectual and convenient to use's of noise reduction handheld drill.
The utility model provides a technical problem adopt following technical scheme to realize:
a hand-held drill with built-in acoustic abatement device, comprising:
a housing;
a rear cover, which is matched with the shell;
the first handle is arranged on one side of the shell;
the second handle is arranged on the other side of the shell;
an air intake device for introducing outside air into the housing;
an output shaft partially disposed within the housing;
the pneumatic power device is used for driving the output shaft to rotate;
the front cover is matched with the shell;
the silencing device is arranged in the shell and comprises a shell, an air inlet hole arranged on the shell, an air outlet hole arranged on the shell and a silencing structure for silencing and reducing noise, and the silencing structure is arranged in the shell;
and the exhaust hole is used for exhausting the air silenced by the silencing device.
The exhaust hole is arranged on the front cover.
The silencing structure comprises a plurality of silencing plates which are uniformly arranged in the shell at intervals and flow guide holes which are formed in the silencing plates.
The positions of the flow guide holes on the two adjacent silencing plates are arranged in a staggered mode.
The positions of the air inlets and the positions of the adjacent flow guide holes are arranged in a staggered manner; the positions of the air outlet holes and the positions of the adjacent flow guide holes are arranged in a staggered mode.
The utility model has the advantages that:
1) the utility model discloses silencing device locates the shell inside, has utilized the space in the shell rationally, make the rig have smaller volume, not only convenient for the workman to grip the use, but also convenient for depositing; meanwhile, the noise generated during the operation of the drilling machine can be greatly reduced by the arrangement of the noise reduction device, a good working environment is ensured, and the harm to the body of a worker is also reduced;
2) the utility model discloses the structure sets up compactly reasonable, convenient to use, and the operation is stable, and fail safe nature is high, and long service life is worth extensively popularizing and applying.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic diagram of a partial cross-sectional structure according to the present invention.
Fig. 3 is a schematic diagram of a partial cross-sectional structure according to the present invention.
Fig. 4 is a schematic view of a partial cross-sectional structure of the silencer of the present invention.
Fig. 5 is a schematic plan view of a partial cross-sectional structure of the present invention.
Fig. 6 is a schematic plan view of the middle section structure of the present invention.
Detailed Description
As shown in fig. 1-6, a handheld drilling machine with a built-in silencer comprises a housing 1, a first handle 2, a second handle 3, an air inlet device 4, an output shaft 5, a pneumatic power device 6, a front cover 7 and a silencer 8, wherein the first handle 2 is arranged on one side of the housing 1, the second handle 4 is arranged on the other side of the housing 1, preferably, the housing 1, the first handle 2 and the second handle 3 are formed by aluminum alloy integrated die casting, the front cover 7 is arranged at the front end of the housing 1, and the rear end of the housing 1 is provided with a rear cover 11 and a gland 12;
the air inlet device 4 is matched with the first handle 2, specifically, the air inlet device 4 includes an open cavity 41, a connector base 42, a valve rod 43, a pressure rod 44, a valve core 45, a spring 46 and a channel 47, the open cavity 41 is arranged on the first handle 2, the connector base 42 is arranged at an opening of the open cavity 41, the valve rod 43 is arranged at the upper end of the open cavity 41, the upper end of the valve rod 43 is matched with the pressure rod 44, a holding part of the pressure rod 44 is positioned outside the first handle 2, the valve rod 43 is connected with the valve core 45, the spring 46 is arranged in front of the connector base 42 and the valve core 45, preferably, a first sealing ring 451 is arranged on the valve core 45, the first sealing ring 451 is an O-shaped sealing ring, a second sealing ring 431 is arranged at the upper end of the valve rod 43, the second sealing ring 431 is an O-shaped sealing ring, and one end of the channel 47 is communicated with the open cavity, the other end of the channel 47 is communicated with the shell 1;
the external compressed air enters the shell 1 through the opening cavity 41 and the channel 42 in sequence, and enters the pneumatic power device 6 arranged in the shell 1, and then the pneumatic power device 6 can drive the output shaft 5 to rotate, and the arrow in the figure points to the flowing direction of the air in the drilling machine; specifically, the pneumatic power device 6 includes a rotating shaft 61, a driving gear 62 and a driven gear 63, the rotating shaft 61 is disposed in the housing 1, two ends of the rotating shaft 61 are respectively matched with the housing 1 through a first bearing 611, the driving gear 62 is sleeved on the rotating shaft 61, the driving gear 62 is engaged with the driven gear 63, the driven gear 64 is sleeved on the output shaft 5, the front end of the output shaft 5 is matched with the housing 1 through a second bearing 51, the output shaft 5 is further provided with a needle bearing 54, after compressed air enters the housing, the driving gear is driven to rotate, and the output shaft can be driven to rotate through the matching of the driven gear;
a through hole 71 is formed in the front cover 7, one end of the output shaft 5 penetrates through the through hole 71 to extend to the outside of the front cover, a third sealing ring 51 is arranged at a position where the output shaft 5 is matched with the through hole 71, the third sealing ring 55 is a Yx type sealing ring, a drill rod sleeve 52 is arranged at the end part of the output shaft 5, which extends out of the outer surface, the drill rod sleeve is in threaded connection with the output shaft, a gasket 53 is arranged in front of the drill rod sleeve 52 and the front cover 7, and the position 13 in fig. 6 is an installation position of the silencer;
the air flow coming out from the pneumatic power device 6 finally passes through the silencer device 8 and then is discharged out of the housing, specifically, the silencer device 8 includes a housing 81, air inlet holes 82, air outlet holes 83, acoustical panels 84 and flow guide holes 85, the housing 81 is disposed at the inner bottom of the housing 1, the air inlet holes 82 are disposed on the front wall of the housing 81, the air outlet holes 83 are disposed on the rear wall of the housing 81, the flow guide holes 85 are disposed on the acoustical panels 84, the acoustical panels 84 are provided in plural numbers, in this embodiment, the acoustical panels 84 are provided with 5 acoustical panels, the 5 acoustical panels are uniformly spaced in the housing 81, that is, 6 sound-absorbing chambers are formed in the housing 81, the positions of the air inlet holes 83 and the positions of the adjacent flow guide holes 85 are staggered, the positions of the air outlet holes and the positions of the adjacent flow guide holes are staggered, and the positions of the flow guide holes on the two adjacent acoustical panels are staggered, the front wall of the housing 81 and the rear wall of the housing 1 form a first chamber 86, the rear wall of the housing 81 and the front cover 7 form a second chamber 84, and the front cover 7 is provided with a plurality of exhaust holes 88 for exhausting the airflow of the second chamber, preferably, the exhaust holes 88 are arranged on two sides of the front cover;
the air coming out of the pneumatic power device firstly enters the first cavity, then enters the shell through the air inlet hole in the front wall of the shell, then sequentially passes through the plurality of sound-absorbing plates through the flow guide holes, then flows into the second cavity through the air outlet hole in the rear wall of the shell, and finally is discharged through the air outlet hole in the front cover, the decibel number of sound of the air after sequentially passing through the plurality of sound-absorbing chambers in the shell is greatly reduced, and the inventor tests the decibel number of the handheld pneumatic drilling machine in the embodiment can be reduced by at least 10 decibels compared with the decibel number of the common handheld pneumatic drilling machine in the working process;
the first handle 2 is also provided with an oil injection device 9, the arrangement of the oil injection device 9 can ensure that the drilling machine is directly connected with an oil injector, an external complex oil injection system is omitted, the oil injection operation is greatly simplified, and the use convenience of the drilling machine is further improved; specifically, the oil injection device 9 includes a cavity 91, a threaded seat 92, an oil injector assembly and a duct 21, the cavity 91 is disposed on the first handle 2, the threaded seat 92 is communicated with the cavity 91, the oil injector assembly is matched with the threaded seat 92, specifically, the oil injector assembly includes an oil injector plug 931, an oil injector sleeve 932, a blind hole 933 and an oil injector pipe 934, the oil injector plug 931 is matched with the threaded seat 92, the oil injector sleeve 932 is disposed outside the upper end of the oil injector plug 931, the blind hole 933 is disposed in the oil injector plug 931, the bottom of the oil injector pipe 934 is matched with the blind hole 933, the duct 21 is disposed on the first handle 2, one end of the duct 21 is communicated with the blind hole 933, and the other end of the duct 21 is communicated with the open cavity 41; oil can enter the opening cavity through the oil injector assembly and the pore passage in sequence and enter the shell through the air inlet device to lubricate the pneumatic power device; the arrangement of the oil injection device changes the operation of the existing oil injection, so that the drilling machine can be directly connected with the oil injector without additionally connecting a complex oil injection system, the oil injection operation is simplified, and the working efficiency is greatly improved;
the utility model discloses the structure sets up compactly rationally, convenient to use, the operation is stable, and fail safe nature is high, long service life, inside silencing device located the shell, the rational utilization of the inside space of shell for the rig has less volume, and the workman of both being convenient for grips the use, is convenient for deposit again, and the noise that this silencing device's setting can greatly reduced rig during operation produced has simultaneously guaranteed good operational environment, has also reduced the injury to workman's health.
The above detailed description of the embodiments of the present invention is only the preferred embodiments of the present invention, and the embodiments of the present invention should not be considered as limiting the scope of the present invention, and all the equivalent changes and improvements made in the application scope of the present invention should still belong to the scope of the present invention.
Claims (5)
1. The utility model provides a handheld rig with built-in silencing device which characterized in that: comprises that
A housing (1);
a rear cover (11) which is matched with the shell (1);
a first handle (2) arranged on one side of the shell (1);
a second handle (3) provided on the other side of the housing (1);
-air intake means (4) for introducing ambient air into the housing (1);
an output shaft (5) partially arranged in the shell (1);
the pneumatic power device (6) is used for driving the output shaft (5) to rotate;
a front cover (7) cooperating with the housing (1);
the silencing device (8) is arranged in the shell (1) and comprises a shell (81), an air inlet (82) arranged on the shell (81), an air outlet (83) arranged on the shell (81) and a silencing structure for silencing and reducing noise, wherein the silencing structure is arranged in the shell (81);
and the exhaust hole (88) is used for exhausting the air which is silenced by the silencing device (8).
2. The hand-held drill with built-in noise reduction device of claim 1, wherein: the exhaust hole (88) is arranged on the front cover (7).
3. A hand-held drill with built-in acoustic damping device according to claim 1 or 2, characterised in that: the silencing structure comprises a plurality of silencing plates (84) which are uniformly arranged in the shell (81) at intervals and flow guide holes (85) which are arranged on the silencing plates (84).
4. A hand-held drill with built-in acoustic abatement apparatus according to claim 3, wherein: the positions of the diversion holes (85) on two adjacent sound-absorbing plates (84) are arranged in a staggered way.
5. The hand-held drill with built-in noise reduction device of claim 4, wherein: the positions of the air inlet holes (82) and the positions of the adjacent diversion holes (85) are arranged in a staggered manner; the air outlet holes (83) are arranged in a staggered manner with the positions of the adjacent diversion holes (85).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920895319.3U CN210115487U (en) | 2019-06-14 | 2019-06-14 | Handheld drilling machine with built-in silencing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920895319.3U CN210115487U (en) | 2019-06-14 | 2019-06-14 | Handheld drilling machine with built-in silencing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210115487U true CN210115487U (en) | 2020-02-28 |
Family
ID=69615691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920895319.3U Expired - Fee Related CN210115487U (en) | 2019-06-14 | 2019-06-14 | Handheld drilling machine with built-in silencing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210115487U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110116229A (en) * | 2019-06-14 | 2019-08-13 | 天津万德矿山机械有限公司 | A kind of hand-held drill with built-in silencing means |
-
2019
- 2019-06-14 CN CN201920895319.3U patent/CN210115487U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110116229A (en) * | 2019-06-14 | 2019-08-13 | 天津万德矿山机械有限公司 | A kind of hand-held drill with built-in silencing means |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200228 Termination date: 20210614 |