CN212177045U - Adjustable soil body enlarges first stock drill bit - Google Patents
Adjustable soil body enlarges first stock drill bit Download PDFInfo
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- CN212177045U CN212177045U CN202020698761.XU CN202020698761U CN212177045U CN 212177045 U CN212177045 U CN 212177045U CN 202020698761 U CN202020698761 U CN 202020698761U CN 212177045 U CN212177045 U CN 212177045U
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Abstract
The utility model discloses an adjustable soil body enlarges first stock drill bit. An adjustable soil body enlarging head anchor rod drill bit comprises a front drill bit, a blade support, a hole enlarging blade device, a force transmission shaft, a drill rod connector, a pusher and a drill rod head, wherein the middle part of the pusher is a push rod, the drill rod head is connected with the rear end of the pusher, the inner side of the front end of the drill rod connector is provided with a hook-shaped structure, the rear end of the drill rod connector is in threaded connection with the main body of the pusher, the force transmission shaft is a hollow shaft, the rear end of the force transmission shaft is movably sleeved in the main body of the pusher, the outer part of the rear end of the force transmission shaft is provided with the hook-shaped structure which can be hooked with the hook-shaped structure at the front end of the drill rod connector, the blade support is fixedly connected with the front drill bit, the front end of the force transmission shaft is connected with the blade support, the force transmission shaft is provided with a plurality of threaded holes for installing limit stop, the other end is inserted in the round hole at the front end of the push rod.
Description
Technical Field
The utility model relates to an adjustable soil body enlarges first stock drill bit is the drill bit of using when carrying out the drilling of the expansion head section of enlarged footing stock in the soil body.
Background
The anchor rod is a tension member buried in the ground, and tightly connects the structure with the rock-soil mass, and the tension of the structure is transmitted or the rock-soil mass is reinforced by the shear strength between the rod body and the rock-soil mass, so that the stability of the structure and the rock-soil mass is ensured. In the development process of the anchoring technology, how to effectively improve the pulling resistance of a single anchor rod is always the focus of exploration and attention in the engineering world. Due to the limitation of construction machines and processes, the anchoring section in the traditional tension anchor rod is mostly cylindrical with a constant cross section, and the shear strength of a rock-soil body cannot be fully exerted due to the small radius of the cross section, so that the improvement of the pulling-resistant bearing capacity of the traditional tension anchor rod is also limited, and the using effect is greatly reduced when the traditional tension anchor rod is applied to a soft soil stratum. The end part enlarged anchor rod (also called as an enlarged head anchor rod) not only increases the contact area of the inner anchoring section and the surrounding rock-soil body by forming the enlarged heads with different radiuses on the inner anchoring section of the anchor rod, but also enables the front end of the enlarged head to form a pressure stress action area on the rock-soil body, so the ultimate bearing capacity of the end part enlarged anchor rod can be improved by more than 2-5 times compared with the traditional tension anchor rod.
The common hole enlarging method for the existing enlarged head anchor rod comprises high-pressure jet grouting and mechanical hole enlarging. The high-pressure rotary spraying needs a high-pressure grouting pump, the cutting effect on the soil body is uneven, and the reaming quality and the radius cannot be controlled, so that the application range is greatly limited. Although the mechanical reaming method has the advantages of simple process, low manufacturing cost and the like, in the reaming process, when various apertures are met, the requirements of different apertures are met by replacing drill bits of different models by using the existing mechanical reaming technology, but the construction requirements of anchor rods under any drilling radius cannot be met due to the limited specifications of the currently usable drill bits, so that the existing mechanical reaming method for the expanded head anchor rods has the problems of low construction efficiency and even incapability of meeting the drilling requirements sometimes.
Disclosure of Invention
To the above-mentioned defect that exists among the prior art, the utility model provides a can adjust an adjustable soil body that drill bit diameter enlarges first stock drill bit according to required drilling diameter.
The utility model discloses a realize through following technical scheme: the utility model provides an adjustable soil body enlarges first stock drill bit, characterized by: the drill bit comprises a front drill bit, a blade support, a reaming blade device, a force transmission shaft, a drill rod connector, a pusher and a drill rod head, wherein the main body of the pusher is of a cylindrical structure with an opening at the front end, the middle part of the pusher is a push rod which is coaxial with the main body and is connected with the rear end of the main body, the front end of the pusher main body is provided with threads, the center of the front end of the push rod is provided with a round hole, the drill rod head is connected with the rear end of the pusher through the threads, the drill rod connector is of a cylindrical structure, the inner side wall of the front end of the drill rod connector is provided with a hook-shaped structure, the rear end of the drill rod connector is connected with the front end of the main body of the pusher through the threads, the force transmission shaft is a hollow shaft, two blade gaps along the axial direction are arranged on the force transmission shaft, the pushing rod is matched with a central hole of the transmission shaft, a hook-shaped structure which can be hooked with a hook-shaped structure arranged on the inner side wall of the front end of the drill rod connector is arranged outside the rear end of the transmission shaft, the front end of the blade support is fixedly connected with the front drill bit, the front end of the transmission shaft is fixedly connected with the rear end of the blade support through a thread stop lever, a plurality of threaded holes are arranged on the transmission shaft at intervals along the axial direction of the transmission shaft, a limit stop lever which can be matched with the threaded holes is arranged on the transmission shaft, a plurality of groups of opposite grooves for embedding the limit stop lever are uniformly distributed on the end surface of the front end of the drill rod connector along the circumference, the reaming blade device comprises two groups of reaming blades, two groups of supporting rods, a supporting support and a spring, the rear ends of the two groups of supporting rods are hinged with the front end of the supporting support through hinged rods, and the rear end of the supporting support is inserted into the circular hole, two sets of the front end of bracing piece is articulated through the middle part of hinge bar and a set of reaming blade respectively, and two sets of reaming blade all pass through the epaxial blade gap of biography power stretches out the biography power off-axial side, the front end of two sets of reaming blade all through same hinge bar with the rear end of blade support is articulated, the one end of spring with the support is connected, its other end with the blade support is connected.
The utility model discloses during the use, place in the initial position that enlarges the section and open the brill, when the drill rod head moves forward, the impeller that is connected with it promotes through the catch bar and supports the support and remove to the blade support along the centre bore of dowel steel, it drives two sets of reaming blades of bracing piece promotion to expand to both sides to support the support simultaneously, when in arbitrary a set of subtend recess on the spacing pin that sets up on the dowel steel and the front end contact of drill rod connector and embedding drill rod connector front end terminal surface, the expansion angle of reaming blade is injectd, drilling work can be carried out this moment. After the drilling operation of the expanding section under the same radius is finished, the pusher and the drill rod connector are driven by the drill rod head to move towards the direction far away from the front drill bit, the supporting seat is pushed by the spring to move towards the direction far away from the front drill bit, meanwhile, the supporting rod pulls the reaming blade to be closed towards the center, and the whole device is recovered under the action of the hook-shaped structure of the drill rod connector and the force transmission shaft.
Further, in order to improve the strength of the reaming blade device, each group of supporting rods comprises two supporting rods arranged in parallel, each group of reaming blades comprises two blades arranged in parallel, and the two blades are connected through a hinge rod.
The utility model has the advantages that: the utility model provides an adjustable soil body enlarged footing stock drill bit can freely adjust the diameter of drill bit according to required drilling diameter through adopting special structural design to the realization is bored the drilling of getting different apertures. The utility model discloses an adjust the epaxial screw hole interval of biography power and reaming blade length, can realize the stock construction demand under the arbitrary drilling radius to avoided the problem of frequent change rig model or drill bit, not only realized the construction site drill bit apparatus simplification, reduced construction cost moreover, improved the efficiency of construction greatly.
Drawings
Fig. 1 is a schematic longitudinal top sectional view (with the reamer blades in a closed state) of the present invention;
fig. 2 is a schematic longitudinal front sectional view (with the reamer blade in a closed state) of the present invention;
FIG. 3 is a schematic view of the attachment of the blade support to the front drill bit in accordance with the present invention;
fig. 4 is a schematic view of the connection structure of the reaming blade device with the blade support and the front drill bit according to the present invention;
FIG. 5 is a schematic view of the connection of the hinge rods of FIG. 4;
fig. 6 is a schematic structural view of a force transmission shaft according to the present invention;
fig. 7 is a schematic structural view of a drill pipe connector according to the present invention;
FIG. 8 is a schematic view of the connection between the dowel pin and the drill pipe connector according to the present invention;
fig. 9 is a schematic longitudinal top view cross-section of the present invention (with the reamer blades deployed at any radius);
fig. 10 is a schematic longitudinal front sectional view of the present invention (expanded state of the reamer blade at an arbitrary radius);
fig. 11 is a schematic longitudinal top sectional view of the present invention (with the reaming insert fully deployed);
fig. 12 is a schematic longitudinal front sectional view of the present invention (with the reamer blades fully deployed);
fig. 13 is a schematic view of the reaming blade assembly separated from the force-transmitting shaft during disassembly of the present invention;
in the figure, 1, a drill rod head, 2, a drill rod connector, 21, a hook-shaped structure of the drill rod connector, 22, an opposite groove, 3, a chambering blade, 4, a spring, 5, a force transmission shaft, 51, a blade gap, 52, a hook-shaped structure of the force transmission shaft, 6, a blade support, 7, a front drill bit, 8, a support rod, 9, a hinge rod, 10, a support, 11, a pusher, 111, a push rod, 112, a main body of the pusher, 12, a threaded stop rod, 13, a threaded hole, 14, a limit stop rod, 15, a hinge No. 1, 16, a hinge No. 2, a hinge No. 17, a hinge No. 3, a hinge No. 18, a hinge No. 4, a hinge No. 19, a hinge No. 5, and.
Detailed Description
The invention will now be further described by way of non-limiting examples with reference to the accompanying drawings:
as shown in the attached drawings, the adjustable soil mass expanding head anchor rod drill bit comprises a front drill bit 7, a blade support 6, a reaming blade device, a force transmission shaft 5, a drill rod connector 2, a pusher 11 and a drill rod head 1. The main body 112 of the pusher 11 is a cylinder structure with an open front end, the middle part of the pusher 11 is a push rod 111 which is coaxial with the main body 112 and is connected with the rear end of the main body 112, the front end of the main body 11 is provided with internal threads, and the center of the front end of the push rod 111 is provided with a round hole. The drill bit head 1 is connected to the rear end of the pusher 11 by a screw. The drill rod connector 2 is of a cylindrical structure, a hook-shaped structure 21 is arranged on the inner side wall of the front end of the drill rod connector 2, a plurality of groups of opposite grooves 22 for embedding the limit stop rods 14 are uniformly distributed on the end surface of the front end of the drill rod connector 2 along the circumference, external threads are arranged at the rear end of the drill rod connector 2, and the rear end of the drill rod connector 2 is connected with the front end of the main body 112 of the pusher 11 through threads. The transmission shaft 5 is a hollow shaft with a central hole inside, the rear end of the transmission shaft 5 is movably sleeved in the main body 112 of the pusher 11, the push rod 111 is matched with the central hole of the transmission shaft 5, a hook-shaped structure 52 which can be hooked with the hook-shaped structure 21 arranged on the inner side wall of the front end of the drill rod connector 2 is arranged outside the rear end of the transmission shaft 5, two blade gaps 51 along the axial direction are arranged on the transmission shaft 5, and the blade gaps 51 penetrate through to the end part of the transmission shaft 5 without the hook-shaped structure. The front end of the blade support 6 is fixedly connected with the front drill 7, and the front end and the front drill can be connected together by welding. The front end of the force transmission shaft 5 is provided with a screw hole, and the front end of the force transmission shaft 5 is fixedly connected with the rear end of the blade support 6 through a threaded stop lever 12. Two rows of threaded holes are symmetrically formed in the force transmission shaft 5, each row comprises a plurality of threaded holes 13 which are arranged at intervals along the axial direction, a limiting stop lever 14 which can be matched with the threaded holes 13 is arranged on the force transmission shaft 5, and the limiting stop lever 14 is used for being matched with the front end of the drill rod connector 2 to limit the drill rod connector. The reaming blade device comprises two sets of reaming blades 3, two sets of supporting rods 8, a supporting support 10 and a spring 4, wherein the rear ends of the supporting rods 8 are hinged to the front end of the supporting support 10 through a hinge rod 9, and the rear end of the supporting support 10 is inserted into a round hole in the front end of the push rod 111. Two sets of the front end of bracing piece 8 is articulated through articulated mast 9 and a set of reaming blade 3's middle part respectively, and two sets of reaming blade 3 all pass through blade gap 51 on the dowel shaft 5 stretches out the dowel shaft 5 outside, the front end of two sets of reaming blade 3 all through same root articulated mast 9 with the rear end of blade support 6 is articulated. One end of the spring 4 is connected to the support mount 10 and the other end is connected to the blade mount 6.
In order to improve the strength of the reaming blade device, in this embodiment, each set of supporting rods 8 includes two supporting rods arranged in parallel, each set of reaming blades 3 includes two blades arranged in parallel, and the two blades are connected through a hinge rod 9. The connection of the hinge points of the hinge levers in this embodiment is shown in fig. 5.
The use method of the adjustable soil mass enlarged head anchor rod drill bit comprises the following steps:
(one) installation of adjustable soil body enlarged head stock drill bit: firstly, sleeving one end of a hook-free structure of a force transmission shaft 5 into a drill rod connector 2 from one end with threads of the drill rod connector 2 to form an integrated device which is mutually nested; secondly, connecting the end with the thread of the drill rod connector 2 with the main body 112 of the pusher 11 together through the thread; the blade support 6 and the front drill 7 are fixedly connected together; assembling the reaming blade device, inserting the rear end of a support 10 of the reaming blade device into a circular hole at the front end of a push rod 111 of a pusher 11, simultaneously respectively inserting the rear ends of two groups of reaming blades 3 into two blade gaps 51 on a force transmission shaft 5, connecting the front ends of the two groups of reaming blades 3 with the rear end of a blade support 6 through a hinge rod, and then connecting the front end of the force transmission shaft 5 with the blade support 6 by using a threaded stop rod 12; selecting a corresponding threaded hole 13 on the force transmission shaft 5 according to the reaming diameter and connecting a limit stop lever 14 at the position of the threaded hole by screw thread to be used as the limit of the pusher 11 and the drill rod connector 2.
(two) the adjustable soil body enlarged footing stock drill bit that will assemble is transferred and is expanded the section and open the initial position of boring, when drill rod head 1 moves forward, the impeller 11 that is connected with it promotes through catch bar 111 and supports support 10 and remove to blade support 6 along the centre bore of dowel 5, support 10 simultaneously and drive the bracing piece 8 and promote two sets of reaming blades 3 and expand to both sides, when spacing pin that sets up on dowel 5 and the front end contact of drill rod connector 2 and embedding drill rod connector 2 front end terminal surface in arbitrary a set of subtend recess 22, the expansion angle of reaming blade 3 is injectd, can carry out drilling work this moment. After the drilling operation of the expansion section under the same radius is finished, the pusher 11 and the drill rod connector 2 are driven by the drill rod head 1 to move towards the direction far away from the front drill bit 7, the support 10 is pushed by the spring 4 to move towards the direction far away from the front drill bit 7, meanwhile, the support rod 8 pulls the reaming blade 3 to be closed towards the center, and the whole device is recovered under the action of the hook-shaped structures of the drill rod connector 2 and the force transmission shaft 5. After the steps are completed, the manufactured anchor rod and the grouting pipe are bound and then are inserted into the drilled hole together, the drilled hole is placed to a position 150mm away from the hole bottom, grouting is started at the hole bottom, and grouting can be stopped when the hole opening returns.
The expanding angle of the reamer blade 3 is limited by the position of the limit stop lever 14 on the force transmission shaft 5, and as shown in fig. 9 and 10, the reamer blade is in an expanded state at any radius, as shown in fig. 11 and 12, the reamer blade is in a fully expanded state, and as shown in fig. 1 and 2, the reamer blade is in a collapsed state.
The limit stop 14 is screwed into a different threaded hole in the force transmission shaft 5 according to the drilling radius, so that drilling of the remaining drilling radius can be started.
(III) replacing the reaming blade: comprises the following steps: firstly, taking down a threaded stop lever 12 connecting a force transmission shaft 5 and a blade support 6; secondly, taking out the reaming blade device, the blade support 6 and the front drill bit 7 integrally from one end of the force transmission shaft 5 connected with the blade support 6 along the central hole of the force transmission shaft 5 and the blade gap 51 on the force transmission shaft 5, as shown in fig. 13; and thirdly, disassembling the reaming blade device, and after replacing the new reaming blade, assembling according to the step (I) to finish the replacement of the reaming blade.
Other parts in this embodiment are the prior art, and are not described herein again.
Claims (2)
1. The utility model provides an adjustable soil body enlarges first stock drill bit, characterized by: the drill bit comprises a front drill bit (7), a blade support (6), a reaming blade device, a force transmission shaft (5), a drill rod connector (2), a pusher (11) and a drill rod head (1), wherein the main body of the pusher (11) is of a cylindrical structure with an open front end, the middle part of the pusher (11) is a push rod (111) which is coaxial with the main body and is connected with the rear end of the main body, the front end of the main body of the pusher (11) is provided with threads, the front end center of the push rod (111) is provided with a round hole, the drill rod head (1) is connected with the rear end of the pusher (11) through threads, the drill rod connector (2) is of a cylindrical structure, the inner side wall of the front end of the drill rod connector (2) is provided with a hook-shaped structure, the rear end of the drill rod connector (2) is connected with the front end of the main body of the pusher (11) through threads, and the, two blade gaps (51) along the axial direction are arranged on the transmission shaft (5), the rear end of the transmission shaft (5) is movably sleeved in the main body of the pusher (11), the push rod (111) is matched with the central hole of the transmission shaft (5), a hook-shaped structure which can be hooked with a hook-shaped structure arranged on the inner side wall of the front end of the drill rod connector (2) is arranged outside the rear end of the transmission shaft (5), the front end of the blade support (6) is fixedly connected with the front drill bit (7), the front end of the transmission shaft (5) is fixedly connected with the rear end of the blade support (6) through a thread stop lever (12), a plurality of threaded holes are arranged on the transmission shaft (5) along the axial direction at intervals, limit stop levers (14) which can be matched with the threaded holes are arranged on the transmission shaft (5), and a plurality of groups of grooves which are used for embedding the limit stop levers (14) in opposite directions are uniformly distributed on the front end surface of the drill rod connector (2) along the circumference 22) The reaming blade device comprises two groups of reaming blades (3), two groups of supporting rods (8), a supporting support (10) and a spring (4), wherein the rear ends of the two groups of supporting rods (8) are hinged with the front end of the supporting support (10) through a hinge rod, the rear ends of the supporting supports (10) are inserted into circular holes at the front ends of the push rods (111), the front ends of the two groups of supporting rods (8) are respectively hinged with the middle parts of the two groups of chambering blades (3) through hinge rods, the two groups of chambering blades (3) extend out of the outer side of the force transmission shaft (5) through blade gaps (51) on the force transmission shaft (5), the front ends of the two groups of chambering blades (3) are hinged with the rear ends of the blade supports (6) through the same hinge rod, one end of the spring (4) is connected with the supporting support (10), and the other end of the spring is connected with the blade support (6).
2. The adjustable soil mass enlarging head anchor rod bit of claim 1, wherein: every group bracing piece (8) is including two parallel arrangement's bracing piece, and every reaming blade (3) of group is including two parallel arrangement's blade, and two blades pass through the hinge bar and connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020698761.XU CN212177045U (en) | 2020-04-30 | 2020-04-30 | Adjustable soil body enlarges first stock drill bit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020698761.XU CN212177045U (en) | 2020-04-30 | 2020-04-30 | Adjustable soil body enlarges first stock drill bit |
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| CN212177045U true CN212177045U (en) | 2020-12-18 |
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| CN202020698761.XU Active CN212177045U (en) | 2020-04-30 | 2020-04-30 | Adjustable soil body enlarges first stock drill bit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116816261A (en) * | 2023-08-30 | 2023-09-29 | 济宁矿业集团有限公司 | Underground roadway support drilling machine supporting device and application method thereof |
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2020
- 2020-04-30 CN CN202020698761.XU patent/CN212177045U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116816261A (en) * | 2023-08-30 | 2023-09-29 | 济宁矿业集团有限公司 | Underground roadway support drilling machine supporting device and application method thereof |
| CN116816261B (en) * | 2023-08-30 | 2023-11-07 | 济宁矿业集团有限公司 | Underground roadway support drilling machine supporting device and application method thereof |
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