CN213898960U - Double-casing core drill - Google Patents
Double-casing core drill Download PDFInfo
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- CN213898960U CN213898960U CN202022775241.7U CN202022775241U CN213898960U CN 213898960 U CN213898960 U CN 213898960U CN 202022775241 U CN202022775241 U CN 202022775241U CN 213898960 U CN213898960 U CN 213898960U
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Abstract
The utility model discloses a double-casing core drill, which comprises a drill joint, wherein a waste soil pipe is arranged below the drill structure, an outer pipe is arranged below the waste soil pipe, an inner pipe is sleeved inside the outer pipe, a drill bit is arranged at the bottom of the outer pipe, an elastic mechanism is fixedly arranged on the inner wall at the bottom end of the waste soil pipe, the top end of the inner pipe is abutted against the elastic mechanism, the double-casing core drill is characterized in that the elastic mechanism is arranged between the inner pipe and the outer pipe, when the inner pipe needs to be taken out from the outer pipe, the inner pipe can be ejected out from the outer pipe through the elastic mechanism, so that a worker can easily take the inner pipe out of the outer pipe, but in order to ensure the fixed relation between the inner pipe and the outer pipe, the inner pipe can be clamped on the elastic mechanism through the clamping mechanism, when the inner pipe needs to be taken out from the outer pipe, only the inner pipe needs to be rotated, the inner tube is separated from the elastic mechanism, and the separated inner tube can be ejected out of the outer tube under the action of the elastic mechanism.
Description
Technical Field
The utility model relates to a boring tool technical field specifically is a double casing pipe core drill.
Background
In the technical field of underground drilling, a core drill tool is often used, and is particularly used for sampling engineering geology, hydrogeology, mine drilling and the like, the purpose is to collect and obtain underground soil, rocks and other samples, then the soil sample is taken out for later-stage detection, and in the sampling process, in order to improve the accuracy of the sample, the key is to avoid the disturbance of the soil sample.
In the prior art, some technologies adopting double sleeves adopt a separated semi-closed pipe for an inner pipe, drilling is finished, the semi-closed pipe is directly opened in half and half after being taken out, and disturbance to a soil sample can be avoided, so that the integrity of the soil sample is maintained, and the sampling accuracy is increased.
After the drilling is finished, the inner pipe needs to be taken out of the outer pipe, but the inner pipe and the outer pipe are often clamped by a metal clamping ring in the conventional structure so as to ensure the stability between the inner pipe and the outer pipe, so that the inner pipe is taken out of the outer pipe by brute force mostly, and therefore, a double-casing core drill is provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a double cannula core drill to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a double-casing core drill comprises a drill joint, wherein a waste soil pipe is arranged below the drill structure, an outer pipe is arranged below the waste soil pipe, an inner pipe is sleeved inside the outer pipe, a drill bit is arranged at the bottom of the outer pipe, an elastic mechanism is fixedly arranged on the inner wall of the bottom end of the waste soil pipe, the top end of the inner pipe is abutted against the elastic mechanism, a clamping mechanism is arranged on the inner wall of the top end of the inner pipe, and the top end of the inner pipe is clamped on the elastic mechanism through the clamping mechanism;
the inner wall of the bottom end of the outer pipe is provided with an internal thread, the drill bit is in threaded connection with the inner wall of the bottom end of the outer pipe, and the top of the drill bit is abutted to the bottom end of the inner pipe.
Preferably, the elastic mechanism comprises a fixing ring with the top end fixed on the inner wall of the bottom of the waste soil pipe, a vertical cylinder is fixed on the bottom edge of the fixing ring, the diameter of the outer wall of the vertical cylinder is smaller than that of the outer wall of the fixing ring, an elastic part is fixed at the bottom of the fixing ring, and the bottom of the elastic part is abutted to the top of the inner pipe.
Preferably, the elastic part comprises an abutting spring fixed at the bottom of the fixed ring, an extrusion ring is sleeved on the outer wall of the fixed ring in a sliding manner, and the bottom of the abutting spring is fixed on the top of the extrusion ring;
the top of the inner pipe is abutted against the bottom of the extrusion ring.
Preferably, the abutting springs are provided with a plurality of groups and are symmetrically distributed on the top of the extrusion ring.
Preferably, the vertical cylinder is provided with an L-shaped groove near the bottom end, the clamping mechanism comprises a clamping convex column fixed on the inner part of the top end of the inner tube, and the convex column is clamped on the vertical cylinder through the L-shaped groove.
Preferably, an accommodating groove is formed in the drill tool joint, a water passing groove is formed in the inner wall of the accommodating groove, and the water passing groove extends to the outer side of the drill tool joint;
an exhaust groove is formed in the bottom of the accommodating groove and communicated with the waste soil pipe;
n type groove has been seted up at the groove top of holding tank, and one side notch in N type groove with water flowing through the groove intercommunication, drilling tool joint internally mounted has air guide mechanism, and air guide mechanism's one end passes the air discharge duct extends to in the opposite side notch in N type groove.
Preferably, the air guide mechanism includes the installation pipe, the top intercommunication of installation pipe has the air duct, just the air duct extends to the inslot in N type groove, the outer wall of installation pipe is fixed with the fillet of screw thread, the installation pipe passes through fillet of screw thread threaded connection on the air discharge duct inner wall, still cup jointed the sealing washer on the installation pipe, just the sealing washer is located the top of fillet of screw thread.
Preferably, the bottom of the inner tube is provided with an annular groove.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a set up elastic mechanism between inner tube and outer tube, when the inner shell is taken out to needs follow the inside of shell, can pop out the inner tube from the outer tube is inside through elastic mechanism, like this the staff alright with light take out the inner tube from the outer tube, but in order to guarantee fixed relation between the two, the inner tube can be through the clamping mechanism joint on elastic mechanism, when needs take out the inner tube from the outer tube, only need rotate the inner tube, make the inner tube break away from elastic mechanism, inner tube after breaking away from is under elastic mechanism's effect, alright pop out with the inside of following the outer tube.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic sectional view of the present invention;
FIG. 3 is an enlarged view of area A of FIG. 2;
FIG. 4 is a schematic view of the main section structure of the present invention;
FIG. 5 is a partial schematic view of FIG. 2;
fig. 6 is a schematic view of the structure of the elastic mechanism and the inner tube.
In the figure: 1-tool joints; 2-a waste soil pipe; 3-an outer tube; 4-inner tube; 5-a drill bit; 6-an elastic mechanism; 7-a clamping mechanism; 8-internal threads; 9-a fixed ring; 10-vertical cylinder; 11-an elastic member; 12-an abutment spring; 13-extruding a ring; 14-L-shaped grooves; 15-clamping the convex column; 16-accommodating grooves; 17-a water trough; 18-an exhaust groove; 19-N type groove; 20-an air guide mechanism; 21-mounting the tube; 22-an airway tube; 23-thread turns; 24-a sealing ring; 25-annular groove.
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.
Referring to fig. 1-6, the present invention provides a technical solution: a double-casing core drill comprises a drill joint 1, a waste soil pipe 2 is installed below the drill structure, an outer pipe 3 is arranged below the waste soil pipe 2, an inner pipe 4 is sleeved inside the outer pipe 3, a drill bit 5 is installed at the bottom of the outer pipe 3, an elastic mechanism 6 is fixedly installed on the inner wall of the bottom end of the waste soil pipe 2, the top end of the inner pipe 4 is abutted to the elastic mechanism 6, a clamping mechanism 7 is arranged on the inner wall of the top end of the inner pipe 4, and the top end of the inner pipe 4 is clamped on the elastic mechanism 6 through the clamping mechanism 7;
an internal thread 8 is formed in the inner wall of the bottom end of the outer pipe 3, the drill bit 5 is in threaded connection with the inner wall of the bottom end of the outer pipe 3, and the top of the drill bit 5 is abutted to the bottom end of the inner pipe 4.
The elastic part 11 comprises an abutting spring 12 fixed at the bottom of the fixed ring 9, an extrusion ring 13 is sleeved on the outer wall of the fixed ring 9 in a sliding manner, and the bottom of the abutting spring 12 is fixed at the top of the extrusion ring 13;
the top of the inner tube 4 and the bottom of the pressing ring 13 abut against each other.
The abutting springs 12 are provided with a plurality of groups and are symmetrically distributed on the top of the extrusion ring 13.
An accommodating groove 16 is formed in the drill joint 1, a water passing groove 17 is formed in the inner wall of the accommodating groove 16, and the water passing groove 17 extends to the outer side of the drill joint 1;
an exhaust groove 18 is formed at the bottom of the accommodating groove 16, and the exhaust groove 18 is communicated with the waste soil pipe 2;
The bottom of the inner tube 4 is provided with an annular groove 25.
The working principle is as follows:
firstly, how to install the inner tube 4 into the outer tube 3 is further described, the inner tube 4 is inserted into the outer tube 3, the clamping convex column 15 on the inner tube 4 is abutted to the bottom of the vertical cylinder 10, then the inner tube 4 is rotated, when the clamping convex column 15 on the inner tube 4 is inserted into the L-shaped groove 14, the inner tube 4 is continuously rotated, at the moment, the inner tube 4 is tightly clamped in the L-shaped groove 14 through the clamping convex column 15, here, the clamping convex column 15 is in interference fit with the L-shaped groove 14, at the moment, the top of the inner tube 4 is extruded with the compression ring 13, the abutting spring 12 is in a compressed state, then the drill bit 5 is installed at the bottom end of the outer tube 3 through the internal thread 8, and the top of the drill bit 5 is tightly abutted to the inner tube 4.
When the inner tube 4 needs to be disassembled, the drill bit 5 is firstly disassembled, then the inner tube 4 can be rotated by the annular groove 25 formed in the bottom of the inner tube 4 by a worker, the clamping convex column 15 on the inner tube 4 is rotated to the opening end of the L-shaped groove 14, at the moment, under the action of the abutting spring 12, the inner tube 4 is ejected out through the abutting spring 12, and the disassembly is completed.
To explain the working principle of the air guide mechanism 20 further, when the air inside the waste soil pipe 2 needs to be removed, the air enters the N-shaped groove 19 through the installation pipe 21 and the air guide pipe 22 in sequence and is finally discharged through the water through groove 17, during the drilling process, part of water flow and crushed soil can enter the accommodating groove 16 through the air discharge groove 18, and under the action of the sealing ring 24, the impurities cannot enter the waste soil pipe 2, so that the sampling sample is prevented from being polluted by the impurities, and in addition, because the air discharge port of the N-shaped groove 19 is from top to bottom, the water flow and the soil slag cannot enter the N-shaped groove 19 easily, so that the water flow and the soil slag cannot enter the air guide pipe 22.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a double casing core drill, includes drill tool joint (1), waste soil pipe (2) are installed to the below of drill tool structure, the below of waste soil pipe (2) is provided with outer tube (3), inner tube (4) have been cup jointed to outer tube (3) inside, drill bit (5), its characterized in that are installed to outer tube (3) bottom: an elastic mechanism (6) is fixedly mounted on the inner wall of the bottom end of the waste soil pipe (2), the top end of the inner pipe (4) is abutted to the elastic mechanism (6), a clamping mechanism (7) is arranged on the inner wall of the top end of the inner pipe (4), and the top end of the inner pipe (4) is clamped on the elastic mechanism (6) through the clamping mechanism (7);
an internal thread (8) is formed in the inner wall of the bottom end of the outer pipe (3), the drill bit (5) is in threaded connection with the inner wall of the bottom end of the outer pipe (3), and the top of the drill bit (5) is abutted to the bottom end of the inner pipe (4).
2. A double-casing core drill as set forth in claim 1, wherein: elastic mechanism (6) are fixed including the top retainer plate (9) on waste soil pipe (2) bottom inner wall, the base of retainer plate (9) is fixed with vertical cylinder (10), just the outer wall diameter of vertical cylinder (10) is less than retainer plate (9) outer wall diameter, the bottom of retainer plate (9) is fixed with elastic component (11), the bottom of elastic component (11) with the mutual butt in top of inner tube (4).
3. A double-casing core drill as set forth in claim 2, wherein: the elastic piece (11) comprises an abutting spring (12) fixed at the bottom of the fixed ring (9), an extrusion ring (13) is sleeved on the outer wall of the fixed ring (9) in a sliding mode, and the bottom of the abutting spring (12) is fixed on the top of the extrusion ring (13);
the top of the inner pipe (4) is abutted against the bottom of the extrusion ring (13).
4. A double-casing core drill as set forth in claim 3, wherein: the abutting springs (12) are provided with a plurality of groups and are symmetrically distributed on the top of the extrusion ring (13).
5. A double-casing core drill as set forth in claim 2, wherein: the vertical cylinder (10) is close to the bottom end and is provided with an L-shaped groove (14), the clamping mechanism (7) comprises a clamping convex column (15) fixed to the inner portion of the top end of the inner tube (4), and the convex column is clamped on the vertical cylinder (10) through the L-shaped groove (14).
6. A double-casing core drill as set forth in claim 1, wherein: an accommodating groove (16) is formed in the drill tool joint (1), a water passing groove (17) is formed in the inner wall of the accommodating groove (16), and the water passing groove (17) extends to the outer side of the drill tool joint (1);
an exhaust groove (18) is formed in the bottom of the accommodating groove (16), and the exhaust groove (18) is communicated with the waste soil pipe (2);
n type groove (19) have been seted up at the groove top of holding tank (16), and one side notch in N type groove (19) with water groove (17) intercommunication, drilling tool joint (1) internally mounted has air guide mechanism (20), and the one end of air guide mechanism (20) passes exhaust duct (18) extend to in the opposite side notch in N type groove (19).
7. A double-casing core drill as set forth in claim 6, wherein: air guide mechanism (20) are including installation pipe (21), the top intercommunication of installation pipe (21) has air duct (22), just air duct (22) extend to the inslot of N type groove (19), the outer wall of installation pipe (21) is fixed with thread circle (23), installation pipe (21) pass through thread circle (23) threaded connection on exhaust duct (18) inner wall, still cup jointed sealing washer (24) on installation pipe (21), just sealing washer (24) are located the top of thread circle (23).
8. A double-casing core drill as set forth in claim 4, wherein: an annular groove (25) is formed in the bottom of the inner pipe (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022775241.7U CN213898960U (en) | 2020-11-26 | 2020-11-26 | Double-casing core drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022775241.7U CN213898960U (en) | 2020-11-26 | 2020-11-26 | Double-casing core drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213898960U true CN213898960U (en) | 2021-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022775241.7U Active CN213898960U (en) | 2020-11-26 | 2020-11-26 | Double-casing core drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213898960U (en) |
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2020
- 2020-11-26 CN CN202022775241.7U patent/CN213898960U/en active Active
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