CN211287522U - Drill rod assembly with follow-up retaining wall casing - Google Patents

Abstract

The utility model provides a drilling rod subassembly with follow-up formula dado sleeve pipe relates to drilling and probing technical field. The drill rod, the drill bit, the wall protection sleeve limiter and the wall protection sleeve are included, the wall protection sleeve limiter is fixed on the drill rod through a fixing mechanism, a shoulder is arranged at the front end of the wall protection sleeve limiter, and the wall protection sleeve is sleeved on the shoulder and is in running fit with the shoulder; and a plurality of through slag discharge holes are axially formed in the periphery of the inner part of the wall protection sleeve limiting stopper so as to conveniently discharge the drilling slag. The beneficial effects of the utility model reside in that: the method solves the technical problems that hole collapse is easily caused in the drilling operation in the loose crushing body, drilling and burying accidents are caused, the construction efficiency is low and the like in the prior art, and has the characteristics that the hole collapse is not easily caused in the drilling operation in the loose crushing body, the drilling and burying accidents are reduced, the construction quality and efficiency are high, the safety and the convenience are realized, and the like. The drilling tool can be widely applied to drilling of structures such as loose and fragile bodies, such as broken rock and soil bodies.

Description

Drill rod assembly with follow-up retaining wall casing

Technical Field

The utility model relates to a probing technical field is particularly suitable for the internal drilling of broken ground.

Background

In recent years, China's economy is rapidly developed, a huge amount of large-angle artificial high side slopes are formed, rock masses are continuously broken and weathered under the action of natural action and artificial activity, thick-layer loose broken bodies are formed to cover the surfaces of the side slopes which slide, when anchor cable reinforcing construction is carried out on the side slopes, drilling operation needs to be carried out, holes are easy to collapse during drilling operation in the loose broken bodies, drilling and burying accidents are caused, construction efficiency is low, construction quality and construction progress are seriously affected, safety of constructors is threatened, and challenges are brought to construction processes.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an aim at provides a drilling rod subassembly with follow-up formula dado sheathed tube to solve the drilling operation easy hole of collapsing of boring into especially in loose broken rock in loose broken internal that exists among the prior art, cause the sticking to bore, bury the brill accident, technical problem such as the efficiency of construction is lower, the utility model discloses the drilling rod is owing to have the follow-up dado sleeve pipe, so have and creep into the operation difficult hole of collapsing in loose broken internal, cause the sticking to bore, bury the brill accident, construction quality and efficient, characteristics such as safe in utilization, convenience. The drilling tool can be widely applied to drilling of structures such as loose and fragile bodies, such as broken rock and soil bodies.

In order to achieve the above object, the utility model adopts the following technical scheme: drilling rod subassembly with follow-up formula dado sleeve pipe, including drilling rod, drill bit, its characterized in that: the drill rod drilling tool further comprises a wall protection sleeve limiter and a wall protection sleeve, wherein the wall protection sleeve limiter is fixed on the drill rod through a fixing assembly, a shoulder is arranged at the front end of the wall protection sleeve limiter, and the wall protection sleeve is sleeved on the shoulder and is in rotating fit with the shoulder; the inner diameter of the wall protection sleeve is larger than the outer diameter of the drill rod, the suspension end of the wall protection sleeve is positioned near the back of the drill bit, and the drilling diameter of the drill bit is larger than or equal to the outer diameter of the wall protection sleeve; and a plurality of through slag discharge holes are axially formed in the periphery of the inner part of the wall protection sleeve limiting stopper so as to conveniently discharge the drilling slag.

Preferably, the wall protection sleeve limiter is a tubular sleeve, the fixing rod is provided with a blind hole, and the tubular sleeve is locked on the drill rod through a screw rod.

Preferably, the number of the screw rods and the blind holes is several.

Preferably, there are several retaining sleeves, which may be threaded or welded together.

Preferably, the drill bit is an eccentric drill bit which can exit the casing pipe when the inner casing pipe of the loose fractured rock body follows, and the eccentric drill bit is a conventional drill bit after passing through the loose fractured zone.

Preferably, the wall protection sleeve limiting stopper comprises 2 small semicircular chucks, a multi-petal wall protection sleeve limiting stopper and a fixing assembly, and the multi-petal wall protection sleeve limiting stopper is respectively fixed on the 2 small semicircular chucks; the small semi-circular chucks 2 are wrapped on the drill rod, the clamping grooves formed in the joint positions of the small semi-circular chucks 2 on the drill rod are provided with anti-rotation limiting bulges, the tail ends of the small semi-circular chucks 2 on the drill rod are provided with axial limiting bulges for preventing the small semi-circular chucks 2 from sliding, and the small semi-circular chucks 2 are locked on the drill rod through fixing components.

Preferably, the fixing assembly comprises 2 sets, each set comprises 2 fixing rods, and 2 screws and nuts lock the 2 small semicircular chucks through screw holes in the fixing rods.

Preferably, the 2 fixing rods are respectively welded with the 2 small semicircular chucks.

Preferably, the anti-rotation limiting protrusions and the axial limiting protrusions form a group of limiting structures, and more than 2 groups of limiting structures are arranged on the drill rod.

The beneficial effects of the utility model reside in that: compared with the prior art, the utility model provides a what exist among the prior art creeps into the easy hole that collapses of operation in loose broken internal especially in loose broken rock, causes the sticking of tool, buries the brill accident, the lower technical problem of efficiency of construction, the utility model discloses the drilling rod is owing to have the wall protection sleeve pipe of following in, so have and creep into the difficult hole that collapses of operation in loose broken internal, reduce the sticking of tool, bury the brill accident, construction quality and efficiency are higher to and characteristics such as safety, convenience. The drilling tool can be widely applied to drilling of structures such as loose and fragile bodies, such as broken rock and soil bodies.

The utility model discloses during the use, can weld the preset position at the drilling rod earlier with preventing rotating stopper, slip stopper, with dead lever and chuck welding combination, installation dado sleeve pipe stopper uses screw rod, nut to pass through two semicircle chucks of dead lever to fix on the drilling rod, and tightening screw increases frictional force. When the drilling machine operates, the chuck transfers the thrust of the drilling machine to the retaining wall sleeve through the multi-petal retaining wall sleeve limiting block by means of the friction between the chuck and the drill rod and the action of the sliding limiting block. Meanwhile, the sliding limiting block and the anti-rotation limiting block act on the tail portion and the side wall of the chuck respectively, relative sliding and rotation of the chuck and the drill rod are prevented, and follow-up efficiency of the wall protection sleeve is improved. The shoulder that evenly distributed's multilobe formula dado sleeve pipe stop block constitutes plays dual function, and on the one hand transmits thrust to the dado sleeve pipe, and on the other hand guarantees the coincidence of dado sleeve pipe central line and drilling rod central line, prevents the rocking of dado sleeve pipe. Gaps among the uniformly distributed multi-petal type wall protection sleeve limiting blocks form a slag discharge hole, so that the smooth discharge of drilling slag is ensured. The eccentric drill bit drills a drill hole with the diameter slightly larger than that of the retaining wall casing pipe in front of the retaining wall casing pipe, the retaining wall casing pipe follows the eccentric drill bit under the action of shoulder-transmitted thrust to drill the hole and protect the wall, and collapse of surrounding rocks is prevented. The device is simple to manufacture and assemble, can effectively improve the drilling efficiency, improve the drilling quality, prevent the accidents of drill burying and drill clamping, and has the characteristics of energy conservation, consumption reduction, good quality, low cost, high efficiency, construction safety guarantee and the like.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an elevational cross-sectional view of fig. 1.

Fig. 3 is a top cross-sectional view of fig. 1.

Fig. 4 is a sectional view taken along line a-a' in fig. 1.

Fig. 5 is a sectional view of B-B' in fig. 1.

Fig. 6 is a cross-sectional view of C-C' in fig. 1.

In the figure: 1-drill rod, 2-chuck, 3-fixed rod, 4-multi-petal type wall protection sleeve limiting block, 5-anti-rotation limiting protrusion, 6-axial limiting protrusion, 7-anti-rotation limiting protrusion clamping groove, 8-screw rod, 9-nut, 10-screw, 11-shoulder, 12-slag discharge hole, 13-drill bit, 14-wall protection sleeve and 15-surrounding rock.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 and 2 together, the present invention will now be described. As a specific embodiment provided by the utility model, including drilling rod 1, drill bit, its characterized in that: the drill rod drilling device further comprises a wall protection sleeve limiter and a wall protection sleeve 14, wherein the wall protection sleeve limiter is fixed on the drill rod 1 through a fixing assembly, a shoulder is arranged at the front end of the wall protection sleeve limiter, and the wall protection sleeve 14 is sleeved on the shoulder and is in running fit with the shoulder; the inner diameter of the wall protection sleeve 14 is larger than the outer diameter of the drill rod 1, the suspension end of the wall protection sleeve 14 is positioned near the rear face of the drill bit, and the drilling diameter of the drill bit is larger than or equal to the outer diameter of the wall protection sleeve 14; a plurality of through slag discharge holes 12 are axially formed in the periphery of the inner part of the wall protection sleeve limiter so as to conveniently discharge the drilling slag.

As a specific embodiment provided by the utility model, it is preferred, dado sleeve pipe stopper is a tubular cover, is equipped with the blind hole on the dead lever 3, and the tubular cover passes through screw rod 8 locking on drilling rod 1.

Preferably, as the utility model provides a specific implementation mode, it is preferred, screw rod and blind hole have a plurality of.

As a specific embodiment of the present invention, it is preferable that the retaining wall sleeve 14 has a plurality of pieces, which can be screwed or welded.

As a specific embodiment provided by the present invention, preferably, the drill bit 13 is an eccentric drill bit capable of exiting the casing when the casing is following up in the loose and broken rock (the structure of the eccentric drill bit is the prior art), and is replaced by a common drill bit after passing through the loose and broken zone.

As a specific embodiment provided by the present invention, preferably, the retaining wall sleeve stopper includes 2 small semicircular chucks 2, a multi-petal retaining wall sleeve stopper 4 and a fixing component, and the multi-petal retaining wall sleeve stopper 4 is fixed on the 2 small semicircular chucks 2 respectively; 2 little semicircle formula chucks 2 package is equipped with on drilling rod 1, at draw-in groove 7 department that the joint of 2 little semicircle formula chucks 2 is constituteed and prevents changeing spacing arch 5, on drilling rod 1, be equipped with at 2 little semicircle formula chucks 2 tail ends and prevent 2 gliding axial spacing archs 6 of little semicircle formula chucks 2, 2 little semicircle formula chucks 2 lock on drilling rod 1 through fixed subassembly.

As a specific embodiment of the utility model provides, it is preferred, fixed subassembly includes 2 sets, and every set includes 2 dead levers 3, and 2 screws 8 and nut 9 pass through the screw on the dead lever 3 with 2 little semicircle formula chucks 2 locks.

As a specific embodiment provided by the utility model, it is preferred, 2 dead levers 3 weld with 2 little semicircle formula chucks 2 respectively.

As a specific embodiment provided by the present invention, preferably, the anti-rotation limiting protrusion 5 and the axial limiting protrusion 6 constitute a set of limiting structures, and more than 2 sets of limiting structures are arranged on the drill rod 1; the retaining wall casing 14 has a plurality of them, which can be threaded or welded to make long holes.

As a specific embodiment provided by the present invention, the following detailed description is given.

The utility model is suitable for a dado sheathed tube follow-up when the internal drilling of broken rock prevents that the country rock from collapsing, reduces the accident of burying brill, card brill, dado sheathed tube follow-up when drilling including but not limited to geology drilling, geotechnical engineering, hydrology.

Referring to fig. 1-5, the utility model provides a drilling rod subassembly with follow-up formula dado sleeve pipe, including drilling rod 1, chuck 2, dead lever 3 and multilobe formula dado sleeve pipe stopper 4, little semicircular chuck 2 and two dead lever 3 welding use screw rod 8, nut 9 to fix two relative little semicircular chuck 2 on drilling rod 1 through the screw on the dead lever 3, and multilobe formula dado sleeve pipe stopper 4 passes through screw 10 and installs at the chuck front end.

As the utility model discloses an preferred mode, drilling rod 1 prevents rotating spacing arch 5 and the spacing arch 6 of axial along the drilling direction evenly mounted multiunit, prevents rotating spacing arch 5 and lays along drilling rod 1 drilling direction, and the spacing arch 6 of axial is laid along drilling rod 1 rotation direction.

The small semicircular chuck 2 is composed of two arc chucks which are smaller than 180 degrees and is connected with the fixed rod 3 in a welding mode, the small semicircular chuck 2 is fixed on the drill rod 1 through the fixed rod 3 by using a screw rod 8 and a nut 9, and the small semicircular chuck 2 is spliced to form an anti-rotation limiting protruding clamping groove 7.

As the optimal selection method of the utility model, the anti-rotation limiting bulge 5 acts on the side wall of the small semicircular chuck 2 to prevent the small semicircular chuck 2 and the drill rod 1 from rotating relatively; the axial limiting bulge 6 acts on the tail part of the small semicircular chuck 2 to prevent the small semicircular chuck 2 from sliding relative to the drill rod 1 and increase the effect of transmitting thrust from the shoulder 4 of the wall protection sleeve limiter to the wall protection sleeve 14.

The multi-petal type protective wall sleeve limiting block 4 is installed at the head of the small semicircular chuck 2 through a screw 10, 3 multi-petal type protective wall sleeve limiting blocks 4 are evenly distributed on each small semicircular chuck 2, the multi-petal type protective wall sleeve limiting blocks 4 form a shoulder 11, the dual functions of transmitting thrust to the protective wall sleeve 14 and limiting the protective wall sleeve to shake are achieved, the central line of the protective wall sleeve 14 is enabled to coincide with the central line of the drill rod 1, and the drilling quality is improved.

And the gaps among the multi-petal type wall protection sleeve limiting blocks 4 form a slag discharge hole 12 during drilling.

During the use, will prevent that the spacing arch of rotation 5, the spacing arch of axial 6 welds in drilling rod 1 preset position earlier, with dead lever 3 and little semicircular chuck 2 welding combination, install many lamella formula dado sleeve pipe stopper 4 at little semicircular chuck 2 head through screw 10, use screw rod 8, nut 9 with two little semicircular chuck 2 through dead lever 3 fastening on drilling rod 1. When the drilling machine operates, the small semicircular chuck 2 transfers the thrust of the drilling machine to the retaining wall sleeve 14 through a shoulder 11 formed by the multi-petal retaining wall sleeve limiting blocks 4 by means of friction between the small semicircular chuck 2 and the drill rod 1 and the action of the axial limiting bulge 6. Meanwhile, the axial limiting bulge 6 and the anti-rotation limiting bulge 5 respectively act on the tail part and the side wall of the small semicircular chuck 2, so that the small semicircular chuck 2 and the drill rod 1 are prevented from sliding and rotating relatively, and the follow-up efficiency of the wall protection sleeve 14 is improved. Shoulder 11 that evenly distributed's multilobe formula dado sleeve pipe stopper 4 is constituteed plays dual function, and on the one hand transmits thrust to the dado sleeve pipe, and on the other hand guarantees that dado sleeve pipe 14 central line and drilling rod 1 central line coincide, prevents the rocking of dado sleeve pipe. The gaps among the uniformly distributed multi-petal type wall protection sleeve pipe limiting blocks 4 form a slag discharge hole 12, so that the smooth discharge of the drilling slag is ensured. The eccentric drill bit 13 drills a drill hole with the diameter slightly larger than the outer diameter of the retaining wall sleeve 14 in front of the retaining wall sleeve 14, the retaining wall sleeve 14 follows the eccentric drill bit 13 under the action of the thrust transmitted by the shoulder 11 to drill a hole and protect the wall, and the surrounding rock 15 is prevented from collapsing. The device is simple to manufacture and assemble, can effectively improve the drilling efficiency, improves the drilling quality, prevents the accidents of buried drilling and stuck drilling, and ensures the construction safety.

And when the retaining wall casing pipe follows the orifice, lifting the drill rod, continuing to perform retaining wall casing pipe follow-up drilling until the rock stratum is stabilized, and replacing the common drill bit.

Adopt the device, when trompil in broken rock mass, transmit rig thrust for the dado sleeve pipe through little semicircular chuck and many lamella formula dado sleeve pipe stopper, make the dado sleeve pipe follow-up along with the trompil drill bit, prevent collapsing of the broken rock mass of pore wall, effectively avoided the card to bore, buried the emergence of boring the accident, promoted work efficiency, improved drilling quality.

The device can use a drilling method comprising the following steps:

step 001: a drilling machine is in place, and a drilling rod component with a follow-up type wall protection sleeve is installed;

step 002: when the hole is opened in the crushed rock mass, the wall protection sleeve is pushed to follow at the hole opening by the shoulder, and the hole is drilled to protect the wall;

step 003: when the wall protection casing pipe follows the hole opening, the drill rod and the drill bit are lifted out of the hole and the lengths of the wall protection casing pipe and the drill rod are continued;

step 004: continuously opening the hole, and continuously following the retaining wall by the retaining wall casing pipe until the broken rock mass is drilled through and the broken rock mass is drilled to a complete rock mass;

step 005: and lifting the drill rod, removing the drill rod component with the follow-up type wall protection sleeve and the eccentric drill bit, replacing the drill rod component with the common drill bit, and continuing to deeply drill to the required depth.

The technical scheme of the utility model is not mentioned above, and the technical personnel in the field can implement.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and all modifications, equivalents, improvements and the like that are made within the spirit and principles of the present invention are included within the scope of the present invention.

Claims (9)

1. Drill rod subassembly with follow-up formula dado sleeve pipe, including drilling rod (1), drill bit, its characterized in that: the drill rod drilling device is characterized by further comprising a wall protection sleeve pipe limiter and a wall protection sleeve pipe (14), wherein the wall protection sleeve pipe limiter is fixed on the drill rod (1) through a fixing assembly, a shoulder is arranged at the front end of the wall protection sleeve pipe limiter, and the wall protection sleeve pipe (14) is sleeved on the shoulder and is in running fit with the shoulder; the inner diameter of the wall protection sleeve (14) is larger than the outer diameter of the drill rod (1), the suspension end of the wall protection sleeve (14) is positioned near the rear face of the drill bit, and the drilling diameter of the drill bit is larger than or equal to the outer diameter of the wall protection sleeve (14); a plurality of through slag discharge holes (12) are axially formed in the periphery of the inner part of the wall protection sleeve limiting stopper so as to conveniently discharge the drilling slag.

2. A drill stem assembly with a follow-up wall sheath as defined in claim 1, wherein: the wall protection sleeve limiting stopper is a tubular sleeve, a screw hole or a blind hole is correspondingly formed in the fixed rod (3), and the tubular sleeve is locked on the drill rod (1) through a screw rod (8).

3. A drill stem assembly with a follow-up retaining wall sleeve as defined in claim 2, wherein: the screw rods and the screw holes or the blind holes are provided with a plurality of screw rods.

4. A drill stem assembly with a follow-up wall sheath as defined in claim 1, wherein: the wall protection sleeves (14) are provided with a plurality of parts which can be connected by screw threads or welded.

5. A drill stem assembly with a follow-up wall sheath as defined in claim 1, wherein: the drill bit (13) is an eccentric drill bit which can exit the sleeve when the inner sleeve of the loose and broken rock body follows, and the drill bit passes through a loose and broken zone and is replaced by a common drill bit.

6. A drill stem assembly with a follow-up wall sheath as defined in claim 1, wherein: the wall protection sleeve limiting stopper comprises 2 small semicircular chucks (2), a multi-petal wall protection sleeve limiting stopper (4) and a fixing assembly, wherein the multi-petal wall protection sleeve limiting stopper (4) is respectively fixed on the 2 small semicircular chucks (2); 2 little semicircle formula chucks (2) package on drilling rod (1), draw-in groove (7) department of the joint department constitution of 2 little semicircle formula chucks (2) is equipped with prevents changeing spacing arch (5), on drilling rod (1), the tail end of 2 little semicircle formula chucks (2) is equipped with prevents the gliding spacing arch of axial (6) of 2 little semicircle formula chucks (2), 2 little semicircle formula chucks (2) are locked on drilling rod (1) through fixed subassembly.

7. The drill stem assembly with a follow-up wall sheath of claim 6, wherein: the fixing assembly comprises 2 sets of fixing rods (3), each set of fixing rods comprises 2 fixing rods (3), and 2 small semicircular chucks (2) are locked by screw holes in the fixing rods (3) through 2 screw rods (8) and nuts (9).

8. The drill stem assembly with a follow-up wall sheath of claim 7, wherein: the 2 fixed rods (3) are respectively welded with the 2 small semicircular chucks (2).

9. The drill stem assembly with a follow-up wall sheath of claim 6, wherein: the anti-rotation limiting protrusions (5) and the axial limiting protrusions (6) form a group of limiting structures, and more than 2 groups of limiting structures are arranged on the drill rod (1).

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