CN213683927U - Impactor piston air inlet channel improvement device - Google Patents
Impactor piston air inlet channel improvement device Download PDFInfo
- Publication number
- CN213683927U CN213683927U CN202022940878.7U CN202022940878U CN213683927U CN 213683927 U CN213683927 U CN 213683927U CN 202022940878 U CN202022940878 U CN 202022940878U CN 213683927 U CN213683927 U CN 213683927U
- Authority
- CN
- China
- Prior art keywords
- piston
- air
- groove
- air chamber
- drill bit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model discloses an impacter piston inlet channel improves device, include: the drill bit, a piston for driving the drill bit work, a joint for conveying high-pressure gas to the piston, distribution seat and outer cylinder, the distribution seat is located the one end of piston, and the two junction forms the back air chamber, the drill bit is located the other end of piston, and the two junction forms preceding air chamber, piston movable mounting is in the interior peripheral part of outer cylinder, and the peripheral part of piston is equipped with the gas tank, back air chamber and preceding air chamber all are indirect and the gas tank intercommunication, the peripheral part of the preceding rear end circular arc ending position in gas tank all is equipped with the annular groove, and annular groove and gas tank intercommunication. Because this device has set up the annular groove on the inlet position of piston air groove front and back end, and annular groove and air groove intercommunication for the inlet position widen of piston air groove front and back end, increase the effective area that admits air of inlet position, improved the smoothness of ventilating and the intake speed of piston air groove front and back end inlet position, finally effectively improve the impact efficiency of piston.
Description
Technical Field
The utility model relates to a pneumatic down-the-hole impacter technical field, more specifically say, relate to an impacter piston inlet channel improves device.
Background
In the prior art, as shown in fig. 1, a pneumatic down-the-hole hammer drives a piston 2 in the hammer to reciprocate at a high speed and a high frequency by using high-pressure air as a power source, so that the piston 2 obtains enough energy to impact a drill bit 1, thereby facilitating the drilling operation. The impact force of the piston 2 acts on the drill bit 1 in the form of stress waves, so that the drill bit 1 generates huge impact energy in a very short time, rock is effectively crushed, holes are rapidly formed, and the purpose of drilling is achieved. The front end and the rear end of the piston 2 are respectively provided with a front air chamber 6 and a rear air chamber 5, an air groove is formed in the outer wall of the piston 2 and is not communicated with the front air chamber 6 and the rear air chamber 5, so that the front air chamber 6 and the rear air chamber 5 can generate pressure difference in the motion process of the piston 2, and the repeated impact motion of the piston can be realized through the pressure difference.
The impactor generally comprises a joint 14, a check valve 15 for plugging an inner hole of the joint 14, a check valve spring 16 arranged in cooperation with the check valve 15, an air distribution seat 3 for positioning the position of the check valve 15, a piston 2, an inner cylinder 9 sleeved on the outer periphery of the piston 2, a drill bit 1, a bushing 10 sleeved on the outer periphery of the joint of the piston 2 and the drill bit 1, a snap ring 12, a drill clamping sleeve 13, alloy teeth 17 arranged at the head of the drill bit 1 and an outer cylinder 4 sleeved on the outer periphery of the inner cylinder 9. The inner cylinder 9 is mainly used for matching with the piston 2 and the air distribution seat 3 to form a closed rear air chamber 5, and the outer cylinder 4, the piston 2 and the lining 10 form a closed front air chamber 6.
The working principle of the impactor is as follows: high-pressure airflow enters the impactor from an inner hole of the joint 14, the high-pressure airflow can push open the check valve 15 to enter the air distribution seat 3, then enters a closed area between the piston 2 and the outer cylinder 4 through a gap between the inner cylinder 9 and the outer cylinder 4, then enters the front air chamber 6 through a gap between the piston 2 and the outer cylinder 4, the pressure of the front air chamber 6 begins to rise, when the pressure of the front air chamber 6 is higher than that of the rear air chamber 5, the piston 2 moves upwards, when the piston 2 rises to a certain position, an air inlet of the front air chamber 6 is closed, an air outlet is opened, an air inlet of the rear air chamber 5 is opened, an air outlet is closed, the high-pressure air enters the rear air chamber 5 through an air inlet of the rear air chamber 5, when the air pressure of the rear air chamber 5 is higher than that of the front air chamber 6, the piston 2 moves downwards to impact the tail end face of the drill bit 1, the alloy teeth 17 impact-break the rock. The air pressure of the front air chamber 6 and the air pressure of the rear air chamber 5 are changed by continuously opening and closing the air inlets and the air outlets of the front air chamber 6 and the rear air chamber 5, so that the piston 2 continuously and repeatedly moves up and down to impact the drill bit 1, and the alloy teeth 17 effectively crush rocks. Meanwhile, in the impact process, the drilling machine drives the impacter and the drill bit 1 to rotate ceaselessly, so that the aim of uniformly crushing rocks and drilling is fulfilled.
Therefore, the intake efficiency of the intake position of the front and rear ends of the piston 2 is particularly important. However, since the air inlet positions at the front end and the rear end of the air groove of the piston 2 are of an arc ending structure, the effective air inlet area is narrow, and the problem of unsmooth ventilation is likely to occur at the positions, so that the air inlet efficiency of the air inlet positions at the front end and the rear end of the air groove of the piston 2 is low, and finally the impact efficiency of the piston 2 is low.
In summary, how to improve the air intake efficiency of the front and rear end air intake positions of the piston air groove is a problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing an impacter piston inlet channel improves device can effectively improve the efficiency of admitting air of piston air duct front and back end inlet position, effectively improves the impact efficiency of piston.
In order to achieve the above object, the present invention provides the following technical solutions:
an impactor piston inlet passage improvement device comprising: the drill bit, be used for the drive the piston of drill bit work, be used for to the piston carries high-pressure gas's joint, distribution seat and outer cylinder, the distribution seat is located the one end of piston, and the two junction form the back air chamber, the drill bit is located the other end of piston, and the two junction form preceding air chamber, piston movable mounting in the inner peripheral part of outer cylinder, just the peripheral part of piston is equipped with the gas tank, preceding air chamber with back air chamber all not direct with the gas tank intercommunication, the peripheral part of the front and back end circular arc ending position of gas tank all is equipped with the annular groove, just the annular groove with the gas tank intercommunication.
Preferably, the annular groove is a semicircular groove.
Preferably, the annular groove is a U-shaped groove.
Preferably, the bottom in U type groove is the plane, two sides in U type groove are the inclined plane, just the inclined plane with contained angle between the plane is the obtuse angle.
Preferably, the annular groove is a V-shaped groove.
Preferably, a connecting position between the annular groove and the piston outer circumferential portion is a circular arc transition.
When the utility model is used, the high-pressure air flow enters the impactor from the inner hole of the joint, the high-pressure air flow can push the check valve open and enter the air distribution seat, then enter the closed area between the piston and the outer cylinder through the gap between the inner cylinder and the outer cylinder, and then enter the front air chamber through the gap between the piston and the outer cylinder, the pressure of the front air chamber begins to rise, when the pressure of the front air chamber is higher than that of the rear air chamber, the piston moves upwards, when the piston rises to a certain position, the air inlet of the front air chamber is closed, the exhaust port is opened, the air inlet of the rear air chamber is opened, the exhaust port is closed, the high-pressure air enters the rear air chamber through the air inlet of the rear air chamber, when the air pressure of the rear air chamber is higher than that of the front air chamber, the piston moves downwards to impact the tail end face of the drill bit, and the impact, the alloy tooth can carry out impact crushing operation on the rock. The air pressure of the front air chamber and the air pressure of the rear air chamber are changed by continuously opening and closing the air inlets and the air outlets of the front air chamber and the rear air chamber, so that the piston continuously and repeatedly moves up and down to impact the drill bit, and the alloy teeth can effectively crush rocks. Meanwhile, in the impact process, the drilling machine can drive the impacter and the drill bit to rotate ceaselessly, so that the aim of uniformly crushing rocks and drilling is fulfilled.
Because this device has set up the annular groove on the inlet position of piston air duct front and back end, and annular groove and air duct intercommunication, effectively increased the open area of piston air duct front and back end inlet position like this, also make the inlet position widen, increase the effective area that admits air of inlet position of piston air duct front and back end, can effectively improve the efficiency of admitting air of piston air duct front and back end inlet position, finally effectively improve the impact efficiency of piston.
To sum up, the utility model provides an impacter piston inlet channel improves device can effectively improve the efficiency of admitting air of piston air duct front and back end inlet position, effectively improves the impact efficiency of piston.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic view of a prior art impactor;
fig. 2 is a schematic structural diagram of the impactor piston inlet channel improving device provided by the present invention.
In fig. 1 and 2:
the drill bit 1, the piston 2, the gas distribution seat 3, the outer cylinder 4, the rear gas chamber 5, the front gas chamber 6, the gas groove 7, the annular groove 8, the inner cylinder 9, the bushing 10, the retaining wire 11, the snap ring 12, the drill clamping sleeve 13, the joint 14, the check valve 15, the check valve spring 16 and the alloy teeth 17.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The core of the utility model is to provide an impacter piston inlet channel improves device can effectively improve the efficiency of admitting air of piston air duct front and back end inlet position, effectively improves the impact efficiency of piston.
Referring to fig. 2, fig. 2 is a schematic structural diagram of an improved device for an air inlet passage of a piston of an impactor in accordance with the present invention.
This embodiment provides an impacter piston inlet channel improves device, includes: drill bit 1, a piston 2 for driving drill bit 1 work, a joint 14 for carrying high-pressure gas to piston 2, distribution seat 3 and outer cylinder 4, distribution seat 3 locates the one end of piston 2, and the two junction forms back air chamber 5, drill bit 1 locates the other end of piston 2, and the two junction forms preceding air chamber 6, piston 2 movable mounting is in the interior peripheral part of outer cylinder 4, and the peripheral part of piston 2 is equipped with air pocket 7, preceding air chamber 6 and back air chamber 5 all do not directly communicate with air pocket 7, the peripheral part of the front and back end circular arc ending position of air pocket 7 all is equipped with annular groove 8, and annular groove 8 communicates with air pocket 7.
It should be noted that, an inner cylinder 9 is sleeved on the outer peripheral part of the joint of the air distribution seat 3 and the piston 2, and the inner cylinder 9 is used for cooperating with the piston 2 and the air distribution seat 3 to form a sealed inner cavity, which is the rear air chamber 5. The periphery of the joint of the piston 2 and the drill bit 1 is provided with a bush 10, the periphery of the drill bit 1 is provided with a drill rod clamping sleeve 13, a snap ring 12 and a retaining wire 11 are arranged between the bush 10 and the drill rod clamping sleeve 13, and a front air chamber 6 can be formed among the outer cylinder 4, the bush 10 and the end part of the piston 2. Therefore, the piston 2 will perform high-frequency and high-speed reciprocating motion in the outer cylinder 4 under the action of high-pressure gas through the pressure change of the front air chamber 6 and the rear air chamber 5 so as to drive the drill bit 1 to work.
It should be noted that the annular groove 8 communicating with the air groove 7 is provided on the outer circumferential portion of the arc ending position of the front and rear ends of the air groove 7 of the piston 2, in order to increase the opening of the front and rear air intake positions of the air groove 7 of the piston 2, widen the air intake position, increase the air intake passage area, and thereby effectively improve the air intake efficiency of the piston 2. In the actual application process, the position, shape, size, number and the like of the annular groove 8 can be determined according to the actual situation and the actual requirement.
When the improved device of the impactor piston air inlet channel provided by the utility model is used, high-pressure air flow enters the impactor from the inner hole of the joint 14, the high-pressure air flow can push away the check valve 15 and enters the air distribution seat 3, then enters the closed area between the piston 2 and the outer cylinder 4 through the gap between the inner cylinder 9 and the outer cylinder 4, and then enters the front air chamber 6 through the gap between the piston 2 and the outer cylinder 4, the pressure of the front air chamber 6 begins to rise, when the pressure of the front air chamber 6 is higher than that of the rear air chamber 5, the piston 2 moves upwards, when the piston 2 rises to a certain position, the air inlet of the front air chamber 6 is closed, the air outlet is opened, the air inlet of the rear air chamber 5 is opened, the air outlet is closed, high-pressure air enters the rear air chamber 5 through the air inlet of the rear air chamber 5, when the air pressure of the rear air chamber 5 is higher than that of the front air chamber 6, and transmits the impact force to the alloy teeth 17 of the head of the drill bit 1, and the alloy teeth 17 can perform impact crushing operation on the rock. The air pressure of the front air chamber 6 and the air pressure of the rear air chamber 5 are changed by continuously opening and closing the air inlets and the air outlets of the front air chamber 6 and the rear air chamber 5, so that the piston 2 continuously and repeatedly moves up and down to impact the drill bit 1, and the alloy teeth 17 effectively crush rocks. Meanwhile, in the impact process, the drilling machine drives the impacter and the drill bit 1 to rotate ceaselessly, so that the aim of uniformly crushing rocks and drilling is fulfilled.
Because this device has set up annular groove 8 on the air inlet position of the back end before the air groove 7 of piston 2, and annular groove 8 and air groove 7 intercommunication, the opening area of the back end air inlet position before the air groove 7 of piston 2 has effectively been increased like this, also make the air inlet position widen of the back end before the air groove 7 of piston 2, increase the effective area that admits air of air inlet position, can effectively improve the air inlet efficiency of the back end air inlet position before the air groove 7 of piston 2, finally effectively improve the impact efficiency of piston 2.
To sum up, the utility model provides an impacter piston inlet channel improves device can effectively improve the efficiency of admitting air of 7 front and back ends air inlet positions in the gas groove of piston 2, effectively improves piston 2's impact efficiency.
In addition to the above embodiments, the annular groove 8 is preferably a semicircular groove. The semicircular groove means that the cross section of the annular groove 8 is semicircular, the annular groove 8 is convenient to process and manufacture, and the processing size of the annular groove 8 is easy to control.
Preferably, the annular groove 8 is a U-shaped groove. The U-shaped groove is that the cross section of the annular groove 8 is U-shaped, and the U-shaped groove is convenient to process and manufacture.
Preferably, the bottom of the U-shaped groove is a plane, two side surfaces of the U-shaped groove are inclined surfaces, and an included angle between each inclined surface and the plane is an obtuse angle. That is, the U-shaped groove is a groove-shaped structure with gradually enlarged openings, which is more favorable for widening the air inlet positions at the front and rear ends of the piston 2 and increasing the effective air inlet area at the air inlet positions, thereby improving the air inlet efficiency at the air inlet positions at the front and rear ends of the piston 2.
Preferably, the annular groove 8 is a V-shaped groove. The V-shaped groove is that the cross section of the annular groove 8 is V-shaped, and the V-shaped groove is convenient to process and manufacture.
The shape, structure, size and the like of the semi-circular groove, the U-shaped groove and the V-shaped groove can be determined according to actual conditions and actual requirements in the actual application process.
In addition to the above embodiments, it is preferable that the connecting position between the annular groove 8 and the outer peripheral portion of the piston 2 is a circular arc transition.
It should be noted that, since the annular groove 8 is provided on the outer peripheral portion of the piston 2, that is, the connection position between the annular groove 8 and the outer peripheral portion of the piston 2 refers to the bottom of the annular groove 8, and the bottom of the annular groove 8 is in a circular arc transition, in order to ensure a smooth transition of the connection position, so as to reduce gas flow resistance and flow loss. In addition, the phenomenon that the piston 2 is broken due to stress concentration at the connecting position can be avoided.
It should be noted that the directions and positional relationships indicated by "front and back", "inside and outside", "bottom", and the like in the present application are based on the directions and positional relationships shown in the drawings, and are only for the convenience of simplifying the description and facilitating the understanding, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The utility model provides an arbitrary compound mode of all embodiments all is in this utility model's a protection scope, does not do here and gives unnecessary details.
The above is to the utility model provides an impacter piston inlet channel improves device and has introduced in detail. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (6)
1. An impactor piston inlet passage improvement device comprising: a drill bit (1), a piston (2) for driving the drill bit (1) to work, a joint (14) for conveying high-pressure gas to the piston (2), a gas distribution seat (3) and an outer cylinder (4), the gas distribution seat (3) is arranged at one end of the piston (2), a rear gas chamber (5) is formed at the joint of the gas distribution seat and the piston, the drill bit (1) is arranged at the other end of the piston (2), a front air chamber (6) is formed at the joint of the drill bit and the piston, the piston (2) is movably arranged on the inner peripheral part of the outer cylinder (4), and the periphery of the piston (2) is provided with an air groove (7), the rear air chamber (5) and the front air chamber (6) are not directly communicated with the air groove (7), the air groove is characterized in that the outer peripheries of the arc ending positions of the front end and the rear end of the air groove (7) are provided with annular grooves (8), and the annular grooves (8) are communicated with the air groove (7).
2. The impactor piston inlet passage improvement device according to claim 1, wherein the annular groove (8) is a semi-circular groove.
3. The impactor piston inlet passage improvement device according to claim 1, wherein the annular groove (8) is a U-shaped groove.
4. The impactor piston inlet passage improving device according to claim 3, wherein the bottom of the U-shaped groove is a plane, two side surfaces of the U-shaped groove are inclined surfaces, and an included angle between the inclined surfaces and the plane is an obtuse angle.
5. The impactor piston inlet passage improvement device according to claim 1, wherein the annular groove (8) is a V-groove.
6. The impactor piston inlet channel improvement device according to any one of claims 1 to 5, wherein the connection location between the annular groove (8) and the outer peripheral portion of the piston (2) is a circular arc transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022940878.7U CN213683927U (en) | 2020-12-10 | 2020-12-10 | Impactor piston air inlet channel improvement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022940878.7U CN213683927U (en) | 2020-12-10 | 2020-12-10 | Impactor piston air inlet channel improvement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213683927U true CN213683927U (en) | 2021-07-13 |
Family
ID=76738931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022940878.7U Active CN213683927U (en) | 2020-12-10 | 2020-12-10 | Impactor piston air inlet channel improvement device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213683927U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117145379A (en) * | 2023-10-31 | 2023-12-01 | 长沙黑金刚实业有限公司 | Reverse circulation impactor |
-
2020
- 2020-12-10 CN CN202022940878.7U patent/CN213683927U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117145379A (en) * | 2023-10-31 | 2023-12-01 | 长沙黑金刚实业有限公司 | Reverse circulation impactor |
| CN117145379B (en) * | 2023-10-31 | 2024-01-30 | 长沙黑金刚实业有限公司 | Reverse circulation impactor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN213683927U (en) | Impactor piston air inlet channel improvement device | |
| CN215108713U (en) | Collection structure and no inner cylinder reverse circulation impacter | |
| CN213597878U (en) | Reverse circulation impactor for collecting pipe with holes | |
| CN218760673U (en) | Reversing valve assembly for hydraulic breaking hammer | |
| WO2018040458A1 (en) | Composite rotary-cutting mining machine | |
| CN201040998Y (en) | Air-leg type rock drill | |
| CN211639311U (en) | Linear motion tool for cleaning castings | |
| CN221144309U (en) | Drill bit with air groove at rod part and without main air hole and impactor | |
| WO2018040459A1 (en) | Combined rotary-cutting mining machine | |
| CN213744257U (en) | Oil groove improving device of impactor piston | |
| CN217327163U (en) | Novel impactor | |
| CN213743225U (en) | Improved device for inner cylinder of impactor | |
| CN219826703U (en) | Piston tail pipe type valveless single-cylinder impactor | |
| CN211306205U (en) | Air shovel | |
| CN213683928U (en) | Positioning device for outer cylinder and joint of impactor | |
| CN204728994U (en) | A kind of high blast fast energy-saving impactor | |
| CN213411877U (en) | Air shovel | |
| CN212407662U (en) | Reversing valve of breaking hammer | |
| CN214062866U (en) | Reverse circulation impactor and drill bit thereof | |
| CN110936246A (en) | Linear motion tool for cleaning castings | |
| CN210819323U (en) | Single-hammer pneumatic impact wrench | |
| CN2318004Y (en) | New control valve group for pneumatic rock drill | |
| CN117432339A (en) | Drill bit with air groove at rod part and without main air hole and impactor | |
| CN213654752U (en) | Starting mechanism of valveless gas distribution rock drill | |
| CN212867388U (en) | Piston device for realizing function of air compressor by utilizing impact |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |