CN213683928U - Positioning device for outer cylinder and joint of impactor - Google Patents
Positioning device for outer cylinder and joint of impactor Download PDFInfo
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- CN213683928U CN213683928U CN202022945677.6U CN202022945677U CN213683928U CN 213683928 U CN213683928 U CN 213683928U CN 202022945677 U CN202022945677 U CN 202022945677U CN 213683928 U CN213683928 U CN 213683928U
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Abstract
The utility model discloses a positioner of impacter outer cylinder and joint, include: the outer jar with be used for the joint of being connected with the outer jar, the inner wall of outer jar is equipped with the internal thread, the outer wall that connects be equipped with be used for with interior screw-thread fit's external screw thread, connect the cooperation position correspondence with the outer jar and be equipped with the location step, the location step be equipped with the seal groove with be used for with seal groove complex sealing member, the sealing member closely laminates with the inner wall of outer jar. The setting of this location step can effectively realize the radial positioning between outer cylinder and the joint, and because the location step is equipped with the seal groove and is used for closely laminating with the inner wall of seal groove complex sealing member, sealing member and outer cylinder, can effectively reduce the clearance between outer cylinder and the joint, avoids radially producing the swing between outer cylinder and joint, avoids appearing bearing too big torsion, producing the crackle even fracture between outer cylinder and joint. And the reduction of the radial clearance can effectively avoid the leakage of compressed gas, and avoid the pressure reduction and the energy loss of high-pressure gas of the impactor.
Description
Technical Field
The utility model relates to a pneumatic down-the-hole impacter technical field, more specifically say, relate to an impacter outer cylinder and positioner who connects.
Background
In the prior art, the pneumatic down-the-hole hammer uses high-pressure air as a power source to drive the piston 9 in the hammer to reciprocate at high speed and high frequency, so that the piston 9 obtains enough energy to impact the drill bit 13, thereby facilitating the drilling operation. The impact force of the piston 9 acts on the drill bit 13 in the form of stress waves, so that the drill bit 13 generates huge impact energy in a very short time, and then rock is effectively crushed, holes are rapidly formed, and the purpose of drilling the rock is achieved.
The impactor generally comprises a joint 2, a check valve 6 for plugging an inner hole of the joint 2, a check valve spring 7 arranged in cooperation with the check valve 6, an air distribution seat 5 for positioning the position of the check valve 6, a piston 9, an inner cylinder 8 sleeved on the outer periphery of the piston 9, a drill bit 13, a bushing 10 sleeved on the outer periphery of the joint of the piston 9 and the drill bit 13, a snap ring 11, a drill clamping sleeve 12, alloy teeth 14 arranged at the head of the drill bit 13, and an outer cylinder 1 sleeved on the outer periphery of the inner cylinder 8, and the structure is shown in fig. 1. The inner cylinder 8 is a thin-wall part and is mainly used for being matched with the air distribution seat 5 and the piston 9 to form a closed piston rear cavity 16, and the outer cylinder 1, the piston 9 and the lining 10 form a closed piston front cavity 15.
The working principle of the impactor is as follows: high-pressure airflow enters the impactor from an inner hole of the connector 2, pushes away the check valve 6, enters the air distribution seat 5, enters a closed area between the piston 9 and the outer cylinder 1 through a gap between the inner cylinder 8 and the outer cylinder 1, enters the piston front cavity 15 through a gap between the piston 9 and the outer cylinder 1, the pressure of the piston front cavity 15 begins to rise, when the pressure of the piston front cavity 15 is higher than that of the piston rear cavity 16, the piston 9 moves upwards, when the piston 9 rises to a certain position, an air inlet of the piston front cavity 15 is closed, an air outlet is opened, an air inlet of the piston rear cavity 16 is opened, an air outlet is closed, high-pressure air enters the piston rear cavity 16 through an air inlet of the piston rear cavity 16, when the air pressure of the piston rear cavity 16 is higher than that of the piston front cavity 15, the piston 9 moves downwards to impact the tail end face of the drill bit 13 and transmits impact force to the alloy teeth 14 at the head of the drill bit 13, the alloy teeth 14 perform an impact crushing operation on the rock. The air pressure of the front piston cavity 15 and the air pressure of the rear piston cavity 16 are changed by continuously opening and closing the air inlets and the air outlets of the front piston cavity 15 and the rear piston cavity 16, so that the piston 9 continuously and repeatedly moves up and down to impact the drill bit 13, and the alloy teeth 14 effectively crush rocks. Meanwhile, in the impact process, the drilling machine drives the impacter and the drill bit 13 to rotate ceaselessly, so that the aim of uniformly crushing rocks and drilling is fulfilled.
The joint 2 is a component for connecting a drill rod with the outer cylinder 1, the connection between the joint 2 and the outer cylinder 1 is usually fixed by threaded connection, but because the gap between the threads is large, the radial positioning between the outer cylinder 1 and the joint 2 cannot be realized, and the gap can cause the outer cylinder 1 and the joint 2 to swing along the radial direction, so that the outer cylinder 1 and the joint 2 bear excessive torsion, generate cracks and even break damage. Moreover, since the gap exists in the radial direction, the compressed gas leaks when passing through the gap, so that the working pressure of the impactor is reduced, energy loss of high-pressure gas is generated, and finally energy consumption of tunneling construction is increased.
In summary, how to improve the connection effect between the joint and the outer cylinder 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 a positioner of impacter outer cylinder and joint can effectively improve the connection effect between joint and the outer cylinder, avoids appearing bearing too big torsion, the phenomenon of crackle even fracture between outer cylinder and the joint, avoids the operating pressure of impacter to reduce simultaneously, the energy consumption of high-pressure gas energy loss and tunnelling construction increases.
In order to achieve the above object, the present invention provides the following technical solutions:
an impactor outer cylinder and joint positioning device comprising: the outer casing with be used for with the joint that the outer casing is connected, the inner wall of outer casing is equipped with the internal thread, the outer wall that connects be equipped with be used for with interior screw-thread fit's external screw thread, connect with the cooperation position correspondence of outer casing is equipped with the location step, the location step be equipped with the seal groove with be used for with seal groove complex sealing member, the sealing member with the inner wall of outer casing closely laminates.
Preferably, the positioning step is arranged close to the bottom of the joint, and the internal thread and the external thread are arranged close to the top of the joint.
Preferably, the outer periphery of the positioning step is provided with a first circumferential positioning surface for positioning and matching with the joint, and the diameter of the first circumferential positioning surface is larger than the major diameter of the external thread.
Preferably, the positioning step is arranged close to the top of the outer cylinder, and the internal thread and the external thread are both arranged close to the bottom of the outer cylinder.
Preferably, the outer periphery of the positioning step is provided with a second circumferential positioning surface for positioning and matching with the joint, and the diameter of the second circumferential positioning surface is smaller than the small diameter of the external thread.
Preferably, the sealing groove is a U-shaped groove or an arc-shaped groove.
Preferably, the sealing element is an O-ring seal.
Use the utility model provides an during positioner of impacter outer cylinder and joint, because connect and be equipped with the location step with corresponding on the cooperation position of outer cylinder, the radial positioning between outer cylinder and the joint can effectively be realized in the setting of this location step, and, because be equipped with the seal groove on the location step and be used for with seal groove complex sealing member, and the inner wall of sealing member and outer cylinder closely laminates, can effectively reduce outer cylinder like this and connect the clearance between, avoid radially producing the swing between outer cylinder and the joint, effectively avoid producing crackle or even fracture between outer cylinder and the joint because of bearing too big torsion. Moreover, due to the reduction of the radial clearance, the leakage phenomenon of compressed gas can be effectively avoided, and the pressure reduction and the energy loss of high-pressure gas generated by the impactor can be avoided.
To sum up, the utility model provides an impacter outer cylinder and positioner who connects can effectively improve the connection effect between joint and the outer cylinder, avoids appearing bearing too big torsion, the phenomenon of crackle fracture destruction even between outer cylinder and the joint, avoids the produced pressure reduction of impacter, high-pressure gas energy loss and the energy consumption increase of tunnelling construction.
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 view of a positioning device for the outer cylinder and the joint of the impactor provided by the invention;
FIG. 3 is another schematic view of the positioning device for the outer cylinder and the joint of the impactor.
In fig. 1-3:
the structure comprises an outer cylinder 1, a joint 2, a positioning step 3, a first circumferential positioning surface 31, a second circumferential positioning surface 32, a sealing element 4, a gas distribution seat 5, a check valve 6, a check valve spring 7, an inner cylinder 8, a piston 9, a bushing 10, a snap ring 11, a fiber clamping sleeve 12, a drill bit 13, an alloy tooth 14, a piston front cavity 15 and a piston rear cavity 16.
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 a positioner of impacter outer cylinder and joint, can effectively improve the connection effect between joint and the outer cylinder, avoid appearing outer cylinder and the phenomenon of bearing too big torsion, production crackle breakage even between the joint, avoid the produced pressure reduction of impacter, high-pressure gas energy loss and the energy consumption of tunnelling construction to increase.
Please refer to fig. 2 and fig. 3, wherein fig. 2 is a schematic structural diagram of a positioning device for an outer cylinder and a joint of an impactor according to the present invention; FIG. 3 is another schematic view of the positioning device for the outer cylinder and the joint of the impactor.
This particular embodiment provides a positioner of impacter outer casing and joint, includes: outer jar 1 with be used for the joint 2 of being connected with outer jar 1, the inner wall of outer jar 1 is equipped with the internal thread, the outer wall that connects 2 be equipped with be used for with interior screw-thread fit's external screw thread, connect 2 and outer jar 1 cooperation position correspondence and be equipped with location step 3, location step 3 be equipped with the seal groove with be used for with seal groove complex sealing member 4, sealing member 4 closely laminates with outer jar 1's inner wall.
The shape, structure, size, material, position and the like of the internal thread, the external thread, the positioning step 3, the sealing groove and the sealing element 4 can be determined in the actual application process according to the actual situation and the actual requirement.
Use the utility model provides an during positioner of impacter outer cylinder and joint, because it is equipped with location step 3 to correspond on 2 and outer cylinder 1's the cooperation position, this location step 3's setting can effectively realize outer cylinder 1 and connect the radial positioning between 2, and, because be equipped with the seal groove on the location step 3 and be used for with seal groove complex sealing member 4, and sealing member 4 closely laminates with outer cylinder 1's inner wall, can effectively reduce outer cylinder 1 and connect the clearance between 2 like this, avoid outer cylinder 1 and connect and radially produce the swing between 2, effectively avoid outer cylinder 1 and connect and produce crackle or even fracture destruction because of bearing too big torsion between 2. Moreover, due to the reduction of the radial clearance, the leakage phenomenon of compressed gas can be effectively avoided, and the pressure reduction and the energy loss of high-pressure gas generated by the impactor can be avoided.
To sum up, the utility model provides a positioner of impacter outer cylinder and joint can effectively improve the connection effect between joint 2 and the outer cylinder 1, avoids appearing bearing too big torsion, producing the phenomenon of crackle breakage even between outer cylinder 1 and the joint 2, avoids the operating pressure of impacter to reduce, the energy consumption of high-pressure gas energy loss and tunnelling construction increases.
On the basis of the above embodiment, preferably, the positioning step 3 is arranged near the bottom of the joint 2, the internal thread and the external thread are arranged near the top of the joint 2, and the sealing groove and the sealing element 4 are arranged on the positioning step 3.
Preferably, the outer periphery of the positioning step 3 is provided with a first circumferential positioning surface 31 for positioning and matching with the joint 2, and the diameter of the first circumferential positioning surface 31 is larger than the major diameter of the external thread. Namely, the diameter of the first circumferential positioning surface 31 of the positioning step 3 arranged at the bottom of the joint 2 is larger than the major diameter of the external thread, and the structure is shown in fig. 2.
It should be noted that, near the bottom or top of the joint 2, the top and bottom are the end of the joint 2 near the piston is the top, and the end far from the piston is the bottom.
It should also be noted that the internal thread and the external thread are both arranged close to the top direction of the joint 2, so that the positioning step 3 and the threaded connection part are not interfered with each other, and then the radial fixing and axial fixing effects between the outer cylinder 1 and the joint 2 are effectively ensured. And the positioning step is provided with a sealing groove which is matched with the sealing element 4, so that the radial clearance between the outer cylinder 1 and the joint 2 can be effectively reduced, the leakage phenomenon of compressed gas can be effectively avoided, and the working pressure reduction and the high-pressure gas energy loss of the impactor can be avoided.
The shape, structure, size, material, position and the like of the positioning step, the internal thread, the external thread, the sealing groove and the sealing element 4 can be determined in the actual application process according to the actual situation and the actual requirement.
Preferably, location step 3 is close to the top setting of outer jar 1, and internal thread and external screw thread all are close to the bottom direction setting of outer jar 1, and seal groove and sealing member 4 all locate on location step 3.
Preferably, the outer periphery of the positioning step 3 is provided with a second circumferential positioning surface 32 for positioning and matching with the joint 2, and the diameter of the second circumferential positioning surface 32 is smaller than the small diameter of the external thread. Namely, the diameter of the second circumferential positioning surface 32 of the positioning step 3 arranged at the top of the outer cylinder 1 and the joint 2 is smaller than the minor diameter of the external thread, and the structure is shown in fig. 3.
It should be noted that, if the diameter of the positioning step 3 disposed at the top of the joint 2 is larger than the small diameter of the external thread, when the joint 2 and the external cylinder 1 are installed, the positioning step 3 interferes with the installation process, so that the joint 2 cannot be screwed into the external cylinder 1 through the external thread.
It should be noted that near the bottom or top of the outer cylinder 1, the top and bottom are the top of the end of the outer cylinder 1 near the piston and the bottom of the end far from the piston.
In addition, it should be noted that the internal thread and the external thread are both far away from the top direction of the outer cylinder 1, so that the positioning step 3 and the threaded connection part are not interfered with each other, and then the radial fixing and axial fixing effects between the outer cylinder 1 and the joint 2 are effectively ensured. And the positioning step is provided with a sealing groove which is matched with the sealing element 4, so that the radial clearance between the outer cylinder 1 and the joint 2 can be effectively reduced, the leakage phenomenon of compressed gas can be effectively avoided, and the working pressure reduction and the high-pressure gas energy loss of the impactor can be avoided.
The shape, structure, size, material, position and the like of the positioning step, the internal thread, the external thread, the sealing groove and the sealing element 4 can be determined in the actual application process according to the actual situation and the actual requirement.
On the basis of the above embodiment, preferably, the sealing groove is a U-shaped groove or an arc-shaped groove.
It should be noted that, the sealing groove is a U-shaped groove or an arc-shaped groove, which means that the cross section of the sealing groove is U-shaped or arc-shaped, and the U-shaped groove or the arc-shaped groove is convenient to process and manufacture and easy to control the processing size of the U-shaped groove or the arc-shaped groove.
Preferably, the sealing element 4 is an O-ring to effectively ensure the sealing and fixing effect of the sealing groove and the sealing element 4.
It should be noted that the directions and positional relationships indicated by "inside and outside", "top and 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 positioning device for the outer cylinder and the joint of the impactor provided by the utility model is described in detail above. 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 (7)
1. An impactor outer cylinder and joint positioning device comprising: outer jar (1) and be used for with joint (2) that outer jar (1) is connected, the inner wall of outer jar (1) is equipped with the internal thread, the outer wall that connects (2) be equipped with be used for with interior screw-thread fit's external screw thread, its characterized in that, connect (2) with the cooperation position correspondence of outer jar (1) is equipped with location step (3), location step (3) be equipped with the seal groove and be used for with seal groove complex sealing member (4), sealing member (4) with the inner wall of outer jar (1) closely laminates.
2. The positioning device of the outer cylinder and the joint of the impactor as defined in claim 1, wherein said positioning step (3) is arranged near the bottom of said joint (2), and said internal thread and said external thread are both arranged near the top direction of said joint (2).
3. The positioning device for the outer cylinder and the joint of the impactor according to claim 2, characterized in that the outer periphery of the positioning step (3) is provided with a first circumferential positioning surface (31) for positioning and matching with the joint (2), and the diameter of the first circumferential positioning surface (31) is larger than the major diameter of the external thread.
4. The positioning device of the outer cylinder and the joint of the impactor as defined in claim 1, wherein said positioning step (3) is arranged close to the top of said outer cylinder (1), and said internal thread and said external thread are both arranged close to the bottom direction of said outer cylinder (1).
5. The positioning device for the outer cylinder and the joint of the impactor according to claim 4, characterized in that the outer periphery of the positioning step (3) is provided with a second circumferential positioning surface (32) for positioning and matching with the joint (2), and the diameter of the second circumferential positioning surface (32) is smaller than the minor diameter of the external thread.
6. The positioning device for the outer cylinder and the joint of the impactor defined in any one of claims 1 to 5, wherein the sealing groove is a U-shaped groove or an arc-shaped groove.
7. The positioning device of an outer cylinder and a joint of an impactor according to claim 6, characterized in that said sealing element (4) is an O-ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022945677.6U CN213683928U (en) | 2020-12-10 | 2020-12-10 | Positioning device for outer cylinder and joint of impactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022945677.6U CN213683928U (en) | 2020-12-10 | 2020-12-10 | Positioning device for outer cylinder and joint of impactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213683928U true CN213683928U (en) | 2021-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022945677.6U Active CN213683928U (en) | 2020-12-10 | 2020-12-10 | Positioning device for outer cylinder and joint of impactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213683928U (en) |
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2020
- 2020-12-10 CN CN202022945677.6U patent/CN213683928U/en active Active
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