CN218324769U - Damping device and down-the-hole drill - Google Patents
Damping device and down-the-hole drill Download PDFInfo
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- CN218324769U CN218324769U CN202223073577.4U CN202223073577U CN218324769U CN 218324769 U CN218324769 U CN 218324769U CN 202223073577 U CN202223073577 U CN 202223073577U CN 218324769 U CN218324769 U CN 218324769U
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Abstract
The application discloses damping device and down-the-hole drill includes: a first joint; a second joint provided at a rear end of the first joint; the front end of the sleeve is fixedly connected with the first joint, the rear end cover of the sleeve is sleeved outside the second joint, and a sealing cavity is formed among the sleeve, the first joint and the second joint; the first cushion pad is arranged in the sealing cavity and is abutted against the rear end of the first joint to be fixed. The application provides a damping device and down-the-hole drill compares in prior art, installs damping device between unit head and drilling rod for the reaction force of buffering drilling rod to the unit head prevents that the unit head from damaging because of receiving strong impact.
Description
Technical Field
The application relates to the technical field of drilling equipment, more specifically say, especially relate to a damping device and down-the-hole drill.
Background
The drilling machine is a construction machine suitable for hole forming operation in engineering, is mainly suitable for drilling operation of various blast holes such as sandy soil, cohesive soil and the like, and is widely applied to the constructions of prospecting, railways, highways, bridges, water conservancy and hydropower, tunnels, water wells, small-caliber diamond core wire line coring drilling, industrial and civil construction, engineering geological exploration, geothermal drilling, coal bed gas drilling and the like.
Drilling machines are of various types, with cutting drilling machines generally including, structurally, a machine body, a mast, a power head, drill rods, and impactors and drill bits. When the drilling machine works, the power head can provide downward pressure and rotary power and upward lifting force for the drill rod, and the impacter below the drill rod can generate a large reaction force during rock drilling, and the reaction force is transmitted to the power head, so that the power head is easily damaged.
Therefore, there is a need for a damping device and a down-the-hole drill, in which the damping device is installed between the power head and the drill rod to damp the reaction force of the drill rod to the power head and prevent the power head from being damaged by strong impact.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the application provides a damping device and a down-the-hole drill, and the damping device is installed between a power head and a drill rod and used for buffering the reaction force of the drill rod on the power head and preventing the power head from being damaged due to strong impact.
The technical scheme provided by the application is as follows:
a shock absorbing device comprising:
a first joint;
a second joint provided at a rear end of the first joint;
the front end of the sleeve is fixedly connected with the first joint, the rear end cover of the sleeve is sleeved outside the second joint, and a sealing cavity is formed among the sleeve, the first joint and the second joint;
and the first cushion pad is arranged in the sealing cavity and is abutted against the rear end of the first joint so as to be fixed.
Preferably, the method further comprises the following steps:
the first air channel is arranged along the axial direction of the first joint;
the second air channel is arranged in the second connector and is coaxial with the first air channel;
the rear end of the first joint is provided with a guide pipe, the rear end of the guide pipe is inserted into the second air passage, and a communicating air passage communicated with the first air passage and the second air passage is arranged in the guide pipe.
Preferably, the method further comprises the following steps:
and the sealing sleeve is sleeved on the outer side of the guide pipe and is in sealing connection with the second joint.
Preferably, the method further comprises the following steps:
the air hole is arranged on the guide pipe and used for communicating the communicating air passage and the sealing cavity.
Preferably, the method further comprises the following steps:
the limiting step is arranged at the front end of the guide pipe;
the mounting groove is arranged at the rear end of the first joint and is matched with the limiting step in shape;
with the first jump ring of connection can be dismantled to the inner wall of mounting groove, first jump ring with spacing step butt is used for with the stand pipe with first joint is fixed.
Preferably, the first cushion pad is sleeved on the outer side of the guide pipe, a second clamp spring is arranged at the rear end of the first cushion pad, the second clamp spring is sleeved on the outer side of the guide pipe, and the second clamp spring is detachably connected with the guide pipe.
Preferably, the method further comprises the following steps:
a stopper provided outside the front end of the second joint;
and the second cushion pad is sleeved on the outer side of the second joint and arranged between the stop block and the rear end cover.
Preferably, the method further comprises the following steps:
a guide rod disposed within the sleeve;
and the guide groove is arranged on the outer circumferential surface of the stop block and is matched with the guide rod for use.
Preferably, the guide rods are arranged in at least two groups, and the guide rods are arranged around the second joint at intervals in the circumferential direction.
A down-the-hole drill comprises a power head, a drill rod, an impactor and a damping device, wherein two ends of the damping device are respectively connected with the power head and the drill rod, and the damping device is specifically any one of the damping devices.
The utility model provides a damping device, at first owing to be provided with first joint, the second connects and the sleeve, wherein, the front end that first joint is used for linking to each other with down-the-hole drill's unit head, the second connects the rear end that sets up at first joint, the rear end that the second connects is used for linking to each other with down-the-hole drill's drilling rod, telescopic front end and first joint fixed connection, telescopic rear end cap suit is in the outside that the second connects, telescopic rear end cap and second connect swing joint, the sleeve, form sealed chamber between first joint and the second joint. Secondly, still be provided with first blotter, wherein, the front end and the first joint butt of first blotter, first blotter can follow the axis direction compression deformation of first joint or the extension that resets. Through setting up first blotter in sealed intracavity, when down-the-hole drill at the in-process of work, the reaction force of drilling rod transmits on the second connects, and partly turns into the kinetic energy that the second connects, and partly turns into the deformation that first blotter atress compression produced to be used for the reaction force of buffering drilling rod, avoid the too big damage that causes the unit head of reaction force. Therefore, compared with the prior art, the embodiment of the utility model provides an in damping device, through set up first blotter in sealed intracavity for the reaction force of buffering drilling rod to the unit head prevents that the unit head from damaging because of receiving strong impact.
The utility model also provides a down-the-hole drill, including unit head, drilling rod, impacter and damping device, wherein, damping device's both ends link to each other with unit head and drilling rod respectively, and damping device specifically is foretell damping device, also can realize buffering the reaction force of drilling rod to the unit head equally, prevents that the unit head from damaging because of receiving strong impact.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings 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 some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a damping device according to an embodiment of the present invention;
fig. 2 is an exploded view of a shock absorbing device according to an embodiment of the present invention.
Reference numerals: 1. a first joint; 2. a second joint; 3. a sleeve; 4. sealing the cavity; 5. a first cushion pad; 6. a second cushion pad; 7. a guide bar; 11. a first air passage; 12. a guide tube; 13. a sealing sleeve; 14. air holes; 15. a first clamp spring; 16. a second clamp spring; 17. a tapered external thread; 21. a second air passage; 22. a stopper; 23. a guide groove; 24. a seal member; 25. a tapered internal thread; 31. a rear end cap; 32. and locking the screw.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the application and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be constructed in operation as a limitation of the application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "plurality" or "a plurality" means two or more unless specifically limited otherwise.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the practical limit conditions of the present application, so that the modifications of the structures, the changes of the ratio relationships, or the adjustment of the sizes, are not essential to the technology, and the modifications, the changes of the ratio relationships, or the adjustment of the sizes, are all within the scope of the technical contents disclosed in the present application without affecting the efficacy and the achievable purpose of the present application.
The embodiment of the utility model provides an adopt progressive mode to write.
As shown in fig. 1 to 2, an embodiment of the present invention provides a damping device, including: a first joint 1; a second joint 2 disposed at a rear end of the first joint 1; the front end of the sleeve 3 is fixedly connected with the first connector 1, a rear end cover 31 of the sleeve 3 is sleeved outside the second connector 2, and a sealing cavity 4 is formed among the sleeve 3, the first connector 1 and the second connector 2; and a first cushion pad 5 disposed in the seal chamber 4, wherein a front end of the first cushion pad 5 abuts against the first joint 1, and the first cushion pad 5 is compressed and deformed or restored and extended in an axial direction of the first joint 1.
When a drilling machine in the prior art works, the power head can provide downward pressure and rotary power and upward lifting force for a drill rod, and an impactor below the drill rod can generate a large reaction force during rock drilling, and the reaction force is transmitted to the power head, so that the power head is easily damaged.
The utility model provides a damping device, at first because be provided with first joint 1, the second connects 2 and sleeve 3, wherein, the front end that first joint 1 is used for linking to each other with the unit head of down-the-hole drill, the second connects 2 and sets up in the first rear end that connects 1, the second connects 2's rear end and is used for linking to each other with the drilling rod of down-the-hole drill, sleeve 3's front end and first 1 fixed connection that connects, sleeve 3's rear end housing 31 suit is in the outside that the second connects 2, sleeve 3's rear end housing 31 and second connect 2 swing joint, sleeve 3, first joint 1 and second connect and form sealed chamber 4 between 2. Next, a first cushion pad 5 is further provided, wherein the front end of the first cushion pad 5 abuts against the first joint 1, and the first cushion pad 5 can be compressed, deformed, or restored and extended along the axial direction of the first joint 1. Through set up first blotter 5 in seal chamber 4, when down-the-hole drill at the in-process of work, the reaction force of drilling rod transmits to the second and connects 2 on, partly turns into the kinetic energy that the second connects 2, and partly turns into the deformation that first blotter 5 atress compression produced to be used for the reaction force of buffering the drilling rod, avoid the too big damage that causes the unit head of reaction force. Therefore, compared with the prior art, the embodiment of the utility model provides a damping device through set up first blotter in seal chamber 4 for the reaction force of buffering drilling rod to the unit head prevents that the unit head from damaging because of receiving strong impact.
In the above-mentioned structure, in order to carry out the dismouting to damping device in order to make things convenient for, as one of them embodiment, the embodiment of the utility model provides an between first joint 1 and the sleeve 3 specifically for can dismantling be connected, specifically for dismantling between sleeve 3 and the rear end cap 31 to be connected, further furtherly, the embodiment of the utility model provides an between first joint 1 and the sleeve 3, adopt locking screw 32 to fix between sleeve 3 and the rear end cap 31.
In the above structure, in order to prevent the sealed space from leaking, as one of the embodiments, the sealing member 24 is disposed between the rear end cap 31 and the second joint 2 in the embodiment of the present invention, and the gas in the sealed cavity 4 is prevented from leaking from between the rear end cap 31 and the second joint 2 by installing the sealing member 24. Furthermore, the sealing elements 24 in the embodiment of the present invention are at least two, and the sealing elements 24 are arranged along the axial direction of the second joint 2 at intervals, and at least two sealing elements 24 are arranged, so that the sealing effect in the sealing cavity 4 is better. Further, the inner wall of the rear end cap 31 in the practice of the present invention is provided with a sealing groove for mounting the sealing member 24. Further, the sealing member 24 in the embodiment of the present invention is embodied as a sealing ring.
In the above structure, as one of the embodiments, the damping device in the embodiment of the present invention further includes a first air passage 11, a second air passage 21 and a guiding tube 12, wherein the first air passage 11 is disposed in the first joint 1, and the first air passage 11 is disposed along the axis direction of the first joint 1, the second air passage 21 is disposed in the second joint 2, and the second air passage 21 is disposed coaxially with the first air passage 11, the guiding tube 12 is disposed at the rear end of the first joint 1, the rear end of the guiding tube 12 is inserted into the second air passage 21, and a communicating air passage for communicating the first air passage 11 and the second air passage 21 is disposed in the guiding tube 12. Compressed gas enters the drill rod through the first air passage 11, the communicating air passage and the second air passage 21 and provides high-pressure gas for the impactor, in the structure, the rear end of the guide pipe 12 is inserted into the second air passage 21, and when the reaction force of the drill rod is transmitted to the second joint 2, the second joint 2 moves along the direction of the guide pipe 12.
In the above structure, the cross section of the rear end of the guide tube 12 in the embodiment of the present invention is specifically a polygonal structure or a circle, and the front end of the second air passage 21 is adapted to the cross section of the guide tube 12. Further, the cross section of the guide tube 12 in the embodiment of the present invention is circular.
In the above-mentioned structure, in order to prevent that high-pressure gas from leaking between the gap between stand pipe 12 and the second joint 2, as one of them embodiment, the utility model provides a damping device still includes seal cover 13, and wherein, seal cover 13 suit is in the outside of stand pipe 12, and stand pipe 12 passes through seal cover 13 and second and connects between 2 sealing connection.
In the above-mentioned structure, in order to further strengthen damping device's shock attenuation effect, as one of them embodiment, the embodiment of the utility model provides a damping device still includes gas pocket 14, and wherein, gas pocket 14 sets up on stand pipe 12, and gas pocket 14 is used for intercommunication air flue and sealed chamber 4, owing to be provided with gas pocket 14 for air pressure in the sealed chamber 4 equals with the air pressure of being connected in the air flue, and when the reaction force of drilling rod conducted to second joint 2, played the effect of buffering through the high pressure in the sealed chamber 4, the shock attenuation effect is better.
In the structure, the embodiment of the utility model provides an in the stand pipe 12 specifically be integrated into one piece structure with first joint 1, but its manufacturing degree of difficulty increases, and if damage has appeared in one of them part, then need whole changes, in order to practice thrift manufacturing cost, as one of them embodiment, the embodiment of the utility model provides an in the stand pipe 12 specifically for can dismantle between 1 with first joint and be connected, specifically, the embodiment of the utility model provides a damping device still includes spacing step, and spacing step setting is provided with the mounting groove with the shape adaptation of spacing step at the front end of stand pipe 12, is provided with first jump ring 15 on the inner wall of mounting groove, first jump ring 15 and spacing step's rear end face butt for it is fixed with first joint 1 with stand pipe 12. Specifically, be provided with the first annular that is used for installing first jump ring 15 on the inner wall of mounting groove, under the initial condition, first jump ring 15 is not installed in first annular, puts into the mounting groove with the spacing step of stand pipe 12 to at first annular in first annular installation first jump ring 15, the rear end face butt of first jump ring 15 and spacing step, be used for fixed stand pipe 12 and first joint 1, space is saved more to this kind of mode, and easy dismounting.
In the above-mentioned structure, as one of them embodiment, first blotter 5 in the embodiment of the utility model can paste on the rear end face of first joint 1, as another embodiment, first blotter 5 suit in the embodiment of the utility model provides a in order to fix first blotter 5 in the outside of stand pipe 12, the utility model discloses the rear end of first blotter 5 is provided with second jump ring 16, and 16 suits of second jump ring are in the outside of stand pipe 12, and can dismantle between second jump ring 16 and the stand pipe 12 and be connected. Specifically, the surface of stand pipe 12 is provided with the second annular, and after stand pipe 12 and first joint 1 were fixed, with first blotter 5 suit on stand pipe 12 to installation second jump ring 16 in the second annular, for spacing restraint first blotter 5.
In the above structure, in order to further increase the shock absorption effect of the shock absorption device, as one of the embodiments, the embodiment of the present invention provides a shock absorption device further comprising a stopper 22 and a second buffer pad 6, wherein the stopper 22 is disposed at the front end of the second joint 2, the second buffer pad 6 is sleeved at the outer side of the second joint 2, and the second buffer pad 6 is disposed between the stopper 22 and the rear end cap 31, the second buffer pad 6 can be compressed, deformed or reset and extended along the axis direction of the second joint 2, and the shock absorption effect is enhanced by disposing the first buffer pad 5 and the second buffer pad 6.
Further, in the above structure, as one of the embodiments, the first cushion 5 and the second cushion 6 in the embodiment of the present invention are made of a rubber material.
In the above structure, as one of the embodiments, the damping device in the embodiment of the present invention further includes a guide rod 7 disposed in the sleeve 3, and a guide groove 23 disposed on the stopper 22, wherein the guide groove 23 cooperates with the guide rod 7 to limit the moving direction of the second joint 2. More specifically, the embodiment of the utility model provides an in front end and the first fixed connection that connects of sleeve 3, sleeve 3's rear end cap 31 suit is in the outside that the second connects 2, realizes the transmission between first joint 1 and the second joint 2 through stand pipe 12 and guide bar 7, and the processing degree of difficulty is low and the processing cost is low.
Furthermore, the guide groove 23 in the embodiment of the present invention is disposed on the outer surface of the stop 22, the sleeve 3 is sleeved on the second joint 2, the guide tube 12 is inserted into the guide groove 23 through the sleeve 3, and the movement of the second joint 2 is limited and restrained by the guide rod and the guide groove 23.
Further, in the above structure, the guide bars 7 in the embodiment of the present invention are provided at least in two sets, and the guide bars 7 are provided around the circumferential interval of the second joint 2. Through the arrangement of at least two sets of guide rods 7, the transmission between the first joint 1 and the second joint 2 is more stable.
Furthermore, in the above structure, as one of the embodiments, the front end of the first joint 1 in the embodiment of the present invention is provided with a tapered external thread 17, and the first joint 1 is connected to the power head through the tapered external thread 17; the utility model discloses the rear end of second joint 2 is provided with toper internal thread 25, and second joint 2 links to each other with the drilling rod through toper internal thread 25.
The utility model also provides a down-the-hole drill, including unit head, drilling rod, impacter and damping device, wherein, damping device's the front end that connects 1 links to each other with the unit head, and damping device's second connects 2 the rear end and links to each other with the drilling rod, and the drilling rod links to each other with the impacter, and damping device specifically is above-mentioned arbitrary damping device, also can realize buffering the reaction force of drilling rod to the unit head equally, prevents that the unit head from damaging because of receiving strong impact.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A shock absorbing device, comprising:
a first joint (1);
a second joint (2) provided at the rear end of the first joint (1);
the front end of the sleeve (3) is fixedly connected with the first joint (1), a rear end cover (31) of the sleeve (3) is sleeved outside the second joint (2), and a sealing cavity (4) is formed among the sleeve (3), the first joint (1) and the second joint (2);
the first buffer pad (5) is arranged in the sealing cavity (4), the front end of the first buffer pad (5) is abutted against the first joint (1), and the first buffer pad (5) can be compressed, deformed or reset and extended along the axial direction of the first joint (1).
2. The shock absorbing device as set forth in claim 1,
further comprising:
a first air duct (11) arranged along the axial direction of the first joint (1);
a second air duct (21) arranged coaxially with the first air duct (11) and arranged in the second joint (2);
the rear end of the first connector (1) is provided with a guide pipe (12), the rear end of the guide pipe (12) is inserted into the second air passage (21), and a communicating air passage communicated with the first air passage (11) and the second air passage (21) is arranged in the guide pipe (12).
3. The damping device according to claim 2,
further comprising:
and the sealing sleeve (13) is sleeved on the outer side of the guide pipe (12) and is in sealing connection with the second joint (2).
4. The cushioning device of claim 3,
further comprising:
and the air hole (14) is arranged on the guide pipe (12) and is used for communicating the communicating air passage with the sealing cavity (4).
5. The damping device according to claim 2,
further comprising:
the limiting step is arranged at the front end of the guide pipe (12);
the mounting groove is arranged at the rear end of the first joint (1) and is matched with the limiting step in shape;
with first jump ring (15) of connection can be dismantled to the inner wall of mounting groove, first jump ring (15) with spacing step butt is used for with stand pipe (12) with first joint (1) is fixed.
6. The cushioning device of claim 5,
first blotter (5) suit is in the outside of stand pipe (12), the rear end of first blotter (5) is equipped with second jump ring (16), second jump ring (16) suit is in the outside of stand pipe (12), just second jump ring (16) with stand pipe (12) can dismantle the connection.
7. The damping device according to one of claims 1 to 6,
further comprising:
a stopper (22) provided outside the front end of the second joint (2);
and the second cushion pad (6) is sleeved on the outer side of the second joint (2) and arranged between the stop block (22) and the rear end cover (31).
8. The cushioning device of claim 7,
further comprising:
a guide rod (7) arranged in the sleeve (3);
and the guide groove (23) is arranged on the outer circumferential surface of the stop block (22) and is matched with the guide rod (7) for use.
9. The cushioning device of claim 8,
the guide rods (7) are at least provided with two groups, and the guide rods (7) are arranged around the second joint (2) at intervals in the circumferential direction.
10. A down-the-hole drill comprising a power head, a drill rod, an impactor and a shock absorbing device, wherein two ends of the shock absorbing device are connected to the power head and the drill rod respectively, and the shock absorbing device is according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223073577.4U CN218324769U (en) | 2022-11-18 | 2022-11-18 | Damping device and down-the-hole drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223073577.4U CN218324769U (en) | 2022-11-18 | 2022-11-18 | Damping device and down-the-hole drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218324769U true CN218324769U (en) | 2023-01-17 |
Family
ID=84829396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223073577.4U Active CN218324769U (en) | 2022-11-18 | 2022-11-18 | Damping device and down-the-hole drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218324769U (en) |
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2022
- 2022-11-18 CN CN202223073577.4U patent/CN218324769U/en active Active
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