CN214110963U - Hole cleaning drill bit and rotary drilling machine with same - Google Patents
Hole cleaning drill bit and rotary drilling machine with same Download PDFInfo
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- CN214110963U CN214110963U CN202023045329.XU CN202023045329U CN214110963U CN 214110963 U CN214110963 U CN 214110963U CN 202023045329 U CN202023045329 U CN 202023045329U CN 214110963 U CN214110963 U CN 214110963U
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Abstract
The utility model provides a clear hole drill bit and be equipped with rig that circles round of this clear hole drill bit is applied to low headroom and links wall grooving construction technology in, and this clear hole drill bit structure is, sets up a body, the body top can be coaxial assembly in the drilling rod end of rig that circles round, and the inner chamber communicates with each other with the drilling rod inner chamber, and the bottom face is uncovered and be equipped with the alloy drill bit of round along circumference interval distribution, the alloy drill bit radially exposes outside the pipe, and each alloy drill bit exposes the end and follows the diameter of place disc outward and links wall thickness according to ground and corresponds the setting, place in the body can the looks adaptation in linking the wall slotted hole, leave the clearance between periphery wall and the cell wall. The utility model discloses a low headroom is wall construction even provides a brand-new thinking, has greatly practiced thrift construction cost, has reduced the construction degree of difficulty, and the construction effect is good, has effectively guaranteed near the safety of building when low headroom is wall construction even, has guaranteed the security and the quality of construction.
Description
Technical Field
The utility model belongs to the technical field of the construction technology of ground wall grooving and specifically relates to a clear hole drill bit and be equipped with this clear hole drill bit's rig that circles round that says so.
Background
In water conservancy projects, diaphragm walls are mostly adopted for seepage prevention and maintenance and soil retaining construction before foundation excavation of large buildings such as water gates, pump stations, subway stations and the like. In the process of constructing the diaphragm wall, the construction site space and the influence possibly caused to surrounding buildings are taken as important factors for restricting the diaphragm wall construction.
When the diaphragm wall is constructed, whether the construction site space can meet the requirements of the construction of the grooving equipment and the influence of the construction equipment on the existing buildings around should be fully considered. During construction, if the construction groove section of the diaphragm wall part is influenced by the objective environment of the site space, adjustment should be made in time, and grooving construction is performed by adopting equipment meeting the ultra-low space requirement, so that the grooving construction is ensured to be performed smoothly, and the integrity and the closure of the diaphragm wall are ensured. At present, a low clearance slot milling machine is usually selected when low clearance slot forming is carried out, but the equipment is not completely popularized in China and has higher manufacturing cost.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving above-mentioned technical problem to a certain extent at least. Therefore, the utility model provides a be applied to low headroom ground and link clear hole drill bit of wall grooving construction technology and be equipped with the rig that circles round of this clear hole drill bit provides a brand-new thinking for low headroom ground is wall construction even, has greatly practiced thrift construction cost, has reduced the construction degree of difficulty, and the construction effect is good.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a hole cleaning drill bit is structurally characterized in that: the pipe body is applied to the groove forming construction process of the diaphragm wall, the top end of the pipe body can be coaxially assembled at the end of a drill rod of a rotary drilling machine, an inner cavity is communicated with an inner cavity of the drill rod, the bottom end surface is open and is provided with a circle of alloy drill bits distributed at intervals along the circumferential direction, the alloy drill bits are exposed out of the pipe body along the radial direction, the diameter of the circular surface where the exposed end of each alloy drill bit is located is correspondingly arranged according to the thickness of the diaphragm wall, the pipe body can be arranged in a slotted hole of the diaphragm wall in a matched mode, and a gap is reserved between the outer peripheral wall and the groove wall.
The utility model discloses clear hole drill bit's structural feature also lies in:
the bottom end part of the tube body is provided with a plurality of soft steel wires which are in radial distribution based on central symmetry of the central axis of the tube body.
The multiple soft steel wires converge towards the center of the pipe body and form a circular notch at the tail end, and the diameter of the circular notch is smaller than that of the inner cavity of the drill rod.
The alloy drill bit is of a square structure.
The alloy drill bits are distributed at equal intervals.
The pipe body is a steel pipe.
The utility model discloses provide a rig circles round simultaneously, its structural feature is: the hole cleaning drill bit is mounted at the end of the drill rod, and the diameter of the circular surface where the exposed end outer edge of each alloy drill bit at the bottom end of the hole cleaning drill bit is located is used as the effective drilling diameter D.
The utility model also provides a low headroom is wall grooving construction technology even:
the method comprises three steps of rotary drilling, impact splitting and sediment cleaning, and the construction is carried out step by step;
the rotary drilling is to drill and cut to the designed hole depth one by using a rotary drilling machine according to a drilling and cutting hole sequence divided according to the technical parameters of the underground diaphragm wall groove section, and a plurality of rotary drilling holes are formed in the groove section;
the impact splitting is to split the partition walls one by using an impact drilling machine according to a drilling and cutting hole sequence at the partition walls formed between two adjacent rotary drilling holes until complete slotted holes are formed;
and the sediment cleaning is to configure a hole cleaning drill bit for the rotary drilling machine, and use the rotary drilling machine to be matched with the hole cleaning drill bit to salvage sediment and pebbles in the slot hole.
The low-clearance ground wall-connecting grooving construction process is specifically carried out according to the following steps:
step 5, according to the hole site marks in the step 3, taking the middle position of two adjacent hole site marks as the position of a partition wall needing to be punched and removed, and using an impact drilling machine to impact and split the partition wall between two adjacent rotary drill holes one by one from one end to the other end of the groove section until a complete groove hole is formed;
and 6, replacing the hole cleaning drill bit prepared in the step 1 by a rotary drilling machine, moving the hole cleaning drill bit back and forth on the rail through the rotary drilling machine, driving the hole cleaning drill bit to perform up-and-down punching movement in the slotted hole by using a winch, milling out the residual small walls in the slot in the step 5 by depending on each alloy drill bit at the bottom end of the hole cleaning drill bit, fishing out sediments and pebbles in the slot by using the rotary drilling machine in cooperation with the hole cleaning drill bit, sucking the sediments and the pebbles into a pump pipe through the hole cleaning drill bit, discharging the sediments and the pebbles out of the slot from a pipe opening, and finishing the sediment cleaning in the slot to form a complete rectangular unit slot section.
Furthermore, the impact drilling machine is provided with a square drilling hammer, a mud circulating system protective wall needs to be arranged when the impact is split into grooves, and the mud circulating system selects high-quality bentonite as a mud preparation material.
Compared with the prior art, the utility model discloses beneficial effect embodies:
in the low-clearance underground diaphragm wall construction process, a large trenching machine cannot operate to eliminate the influence of surrounding buildings on the underground diaphragm wall construction. At present, a low clearance slot milling machine is selected when low clearance slot forming is carried out, but the low clearance slot milling machine is not popularized in China, the purchase cost is about 400-600 thousands, and the manufacturing cost is very high;
based on this background, the utility model discloses a low headroom ground is wall construction even provides brand-new thinking, is the initiative in this field, has broken the permanent bottleneck that comes of low headroom grooving construction, can be under the prerequisite that does not influence ground even wall surrounding building crowd, accomplishes low headroom ground even wall grooving construction. The utility model discloses a purpose-made clear hole drill bit, the main part is the steel pipe that has the alloy drill bit, and its convenient for acquireing materials, simple manufacture does not increase new building materials, does not increase resource consumption, accords with green construction requirement, and this clear hole drill bit cooperates the use of the rig that circles round and has solved the key technical problem that low headroom links the wall grooving and slag tap, has played good effect in low headroom links the wall work progress. Therefore, the utility model discloses can realize adopting the rig that circles round to cooperate the percussion drill to bore and cut into the groove and accomplish low headroom ground and link the wall construction, utilize the rig that circles round in soil layer, gravel and the strong weathering rock formation pore-forming ability to utilized the percussion drill in the weak weathering rock formation, and the rig that circles round and the percussion drill is as common basic construction equipment, purchase lease price is cheap a lot relatively, makes construction cost greatly reduced; meanwhile, the safety of nearby buildings during construction is effectively guaranteed, and the safety and the quality of diaphragm wall construction are guaranteed;
the utility model discloses have spreading value in the wall construction even in the ground especially low headroom ground is even the wall construction even, solved and to have relied on the difficult problem that purchase foreign and expensive low headroom slot milling machine was under construction in the past, very be applicable to at internal extensive popularization, practicality, economic nature are splendid.
Drawings
FIG. 1 is a schematic structural view of the hole cleaning drill of the present invention;
FIG. 2 is a schematic structural view of the bottom end of the hole cleaning drill of the present invention;
FIG. 3 is a rotary drilling sequence diagram of a rotary drilling machine in a low-clearance diaphragm wall grooving construction process;
fig. 4 is a sequence diagram of impact splitting of a percussion drill in the low-clearance diaphragm wall grooving construction process.
In the figure, 1 drill rod; 2, a pipe body; 3, an alloy drill bit; 4 mild steel wires.
Detailed Description
To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are 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 efforts belong to the protection scope of the present invention.
Referring to fig. 1 to 2, the hole cleaning drill of the present embodiment is applied to a trench forming construction process of an underground diaphragm wall, and is provided with a pipe body 2, wherein the top end of the pipe body 2 can be coaxially assembled at the rod end of a drill rod 1 of a rotary drilling machine, an inner cavity is communicated with the inner cavity of the drill rod 1, the bottom end surface is open and provided with a circle of alloy drill bits 3 distributed at intervals along the circumferential direction, the alloy drill bits 3 are exposed outside the pipe body 2 along the radial direction, the diameter of the circular surface where the exposed end of each alloy drill bit 3 is located is correspondingly set according to the thickness of the underground diaphragm wall, the pipe body 2 can be adaptively arranged in a slotted hole of the underground diaphragm wall, the outer diameter is slightly smaller than the thickness of the underground diaphragm wall, and a gap is left between the outer peripheral wall and the slotted wall.
In specific implementation, the corresponding arrangement of the hole cleaning drill bit also comprises:
the bottom end part of the tube body 2 is provided with a plurality of soft steel wires 4 which are radially distributed based on the central axis of the tube body 2 in a centrosymmetric manner.
The plurality of soft steel wires 4 converge towards the center of the pipe body 2 and form a circular gap at the tail end, and the diameter of the circular gap is smaller than that of the inner cavity of the drill rod 1.
The alloy drill bit 3 can ensure the drilling and cutting capacity of the hole cleaning drill bit, is of a square structure in the embodiment, and can be a YG06 alloy straight-line type drill bit; the alloy drill bits 3 are distributed at equal intervals.
The pipe body 2 is a steel pipe.
The main structure of the hole cleaning drill bit is a hollow steel pipe with a square alloy drill bit 3 at the bottom, under the action of adsorption force provided by the rotary drilling machine, stone slag (sediment and pebbles) left in a groove hole after construction of the rotary drilling machine and the percussion drilling machine are gathered by the hollow steel pipe, and then the stone slag and the pebbles are sucked into a pump pipe through an inner cavity of a drill rod 1 and discharged from a pipe opening. The function of the mild steel wire 4 is to prevent the ballast from falling out of the steel pipe, so as to better ensure the efficiency of sucking out the ballast. The gap formed between two adjacent mild steel wires 4 is large enough for the stone slag to pass through.
The embodiment also provides a rotary drilling machine, wherein the hole cleaning drill bit is installed at the rod end of the drill rod 1, the diameter of the circular surface of the exposed end of each alloy drill bit 3 at the bottom end of the hole cleaning drill bit is used as an effective drilling diameter D, and the effective drilling diameter D is correspondingly arranged according to the thickness of the diaphragm wall so as to ensure that the structural size of the diaphragm wall after being formed into the diaphragm wall meets the requirement.
The embodiment also provides a low-clearance diaphragm wall grooving construction process applying the hole cleaning drill bit and the rotary drilling machine, which comprises the following steps:
the method comprises three steps of rotary drilling, impact splitting and sediment cleaning, and the construction is carried out step by step;
the rotary drilling is to drill and cut to the designed hole depth one by using a rotary drilling machine according to a drilling and cutting hole sequence divided according to the technical parameters of the underground diaphragm wall groove section, and a plurality of rotary drill holes are formed in the groove section;
the impact splitting is to split the partition walls one by using an impact drilling machine according to a drilling and cutting hole sequence at the partition walls formed between two adjacent rotary drilling holes until complete slotted holes are formed;
and (4) sediment cleaning, namely, arranging a hole cleaning drill bit for the rotary drilling machine, and fishing sediment and pebbles in the slotted hole by using the rotary drilling machine in cooperation with the hole cleaning drill bit.
In the low-clearance underground diaphragm wall construction process, a large trenching machine cannot operate to eliminate the influence of surrounding buildings on the underground diaphragm wall construction. In the construction process, a rotary drilling machine is adopted to drill and cut the part to form the groove, the groove hole needs to penetrate through a sandy gravel stratum to enter the bedrock for a certain depth by combining the geological condition of the part, and the impact drilling machine is matched to split and beat the bedrock partition wall with higher hardness. Namely 'rotary drilling, impact splitting and sediment cleaning'.
The construction process utilizes the hole forming capability of a rotary drilling machine in a soil layer, gravel sand and gravel and a strong weathering rock stratum and the hole forming capability of an impact drilling machine in a weak weathering rock stratum, the quantity and the hole forming pitch of drilled holes are reasonably divided, the rotary drilling machine is used for drilling and cutting the drilled holes, then the impact drilling machine is used for splitting and striking partition walls between the rotary drilling holes, the drilled holes are occluded to form grooves, complete slotted holes are formed, then the rotary drilling machine is matched with a special hole cleaning drill, stone slag remained in the slotted holes after the rotary drilling machine and the impact drilling machine are constructed is cleaned, and the salvage of the sediment slag is completed. The construction process improves the hole forming efficiency in the sandy gravel stratum and has great popularization significance in diaphragm wall construction, particularly low clearance diaphragm wall construction.
The low-clearance ground wall-connecting grooving construction process is specifically carried out according to the following steps:
step 5, according to the hole site marks in the step 3, taking the middle position of two adjacent hole site marks as the position of a partition wall needing to be punched and removed, and using an impact drilling machine to impact and split the partition wall between two adjacent rotary drill holes one by one from one end to the other end of the groove section until a complete groove hole is formed;
and 6, replacing the hole cleaning drill bit prepared in the step 1 by a rotary drilling machine, moving the hole cleaning drill bit back and forth on the rail through the rotary drilling machine, driving the hole cleaning drill bit to perform up-and-down punching movement in the slotted hole by using a winch, milling out the residual small walls in the slot in the step 5 by depending on each alloy drill bit at the bottom end of the hole cleaning drill bit, fishing out sediments and pebbles in the slot by using the rotary drilling machine in cooperation with the hole cleaning drill bit, sucking the sediments and the pebbles into a pump pipe through the hole cleaning drill bit, discharging the sediments and the pebbles out of the slot from a pipe opening, and finishing the sediment cleaning in the slot to form a complete rectangular unit slot section.
Furthermore, the impact drilling machine is provided with a square drilling hammer, a mud circulating system protective wall needs to be arranged when the impact is split into grooves, and the mud circulating system selects high-quality bentonite as a mud preparation material.
The low clearance diaphragm wall grooving construction process is described in detail below with reference to fig. 3 to 4:
1. according to the wall thickness of the continuous wall required by design, the diameters of drill bits of matched rotary drilling machines are selected, the number of drilled holes is reasonably divided according to the length of a groove section determined by the standard requirement, and the drilled hole numbers and the intervals are sequentially laid and marked on the concrete guide wall. The number of holes of one groove section is divided according to an equal division principle, and the division principle of the number of the drilled holes is as follows: and the length L and the width B of the groove section are respectively equal to the number X of the drill holes, if the number X of the drill holes is not an integer, the number X of the drill holes is the number obtained by rounding off the decimal number Y, and the distance is B + (Y/X). Example (c): the thickness of the impervious wall is 0.6m, the length of a single groove section is 7m, the diameter of a drill bit of the rotary drilling machine is selected to be 0.6m, the number of drilled holes is 7/0.6 to 11.67, so that the number of drilled holes of the groove section is 11, the total length of 11 holes is 6.6m, the remaining 0.4m of the groove section is determined, and the drilling distance of the rotary drilling machine is controlled to be 0.64 m. FIG. 3 is a schematic view of a rotary drill cutting slot;
2. the rotary drilling machine is positioned on the construction platform, the position of a machine body and the verticality of a drill rod are adjusted according to the hole position marks made on the concrete guide wall, after the verticality adjustment meets the requirements, the rotary drilling machine is constructed from one end of a slotted hole to the other end by adopting a hole jumping method, namely, firstly, drilling is performed according to the sequence of (i) - (c …), and then, drilling is performed according to the sequence of (i) - (c …). A technician compares the designed bottom elevation of the impervious wall according to the measured foundation elevation data in the previous step, calculates the drilling depth of the rotary drilling machine, measures the drilling depth of a drill rod by using a steel tape in combination with the elevation of the concrete guide wall, and marks the drill rod; strictly controlling the verticality and the drilling depth of the drill rod in the drilling process to ensure that the design requirements are met;
3. positioning the impact drilling machine according to hole site marks made on the concrete guide wall when the rotary drilling machine drills holes, wherein the middle position of every two hole site marks is the position of the partition wall needing to be subjected to impact chiseling, and guiding the impact drilling machine to be in place by technicians to start impact splitting construction. And after the drilling of each groove section by the rotary drilling machine is finished, a percussion drill is used for percussion splitting on the bedrock partition wall between the drilled holes, and the splitting sequence is pushed from one end of each groove section to the other end of each groove section. In order to ensure the safety and the quality of the impact splitting groove, the quality control of the circulating system for producing the wall-protecting slurry is a key factor related to the stability of the wall of the groove, high-quality bentonite is preferentially adopted as a slurry preparation material, and the slurry material for pore-forming can be used after being qualified through field detection;
4. after drilling by the rotary drilling machine and impact splitting construction by the impact drilling machine are completed, the rotary drilling machine is matched with a special hole cleaning drill bit to salvage sediment and pebbles, the sediment is sucked into the pump pipe and discharged from the pipe opening, and in the process, residual small walls in the groove are further milled by utilizing various alloy drill bits at the bottom end of the hole cleaning drill bit, so that the hole forming efficiency is improved in a sandy and pebble stratum. In the process of cleaning the tank, high-quality slurry is continuously pumped into the tank to keep the liquid level height and prevent hole collapse.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (7)
1. A hole cleaning drill bit is characterized in that: the pipe body is applied to the groove forming construction process of the diaphragm wall, the top end of the pipe body can be coaxially assembled at the end of a drill rod of a rotary drilling machine, an inner cavity is communicated with an inner cavity of the drill rod, the bottom end surface is open and is provided with a circle of alloy drill bits distributed at intervals along the circumferential direction, the alloy drill bits are exposed out of the pipe body along the radial direction, the diameter of the circular surface where the exposed end of each alloy drill bit is located is correspondingly arranged according to the thickness of the diaphragm wall, the pipe body can be arranged in a slotted hole of the diaphragm wall in a matched mode, and a gap is reserved between the outer peripheral wall and the groove wall.
2. The hole cleaning drill bit as defined in claim 1, wherein: the bottom end part of the tube body is provided with a plurality of soft steel wires which are in radial distribution based on central symmetry of the central axis of the tube body.
3. The hole cleaning drill bit as defined in claim 2, wherein: the multiple soft steel wires converge towards the center of the pipe body and form a circular notch at the tail end, and the diameter of the circular notch is smaller than that of the inner cavity of the drill rod.
4. The hole cleaning drill bit as defined in claim 1, wherein: the alloy drill bit is of a square structure.
5. The hole cleaning drill bit as defined in claim 1, wherein: the alloy drill bits are distributed at equal intervals.
6. The hole cleaning drill bit as defined in claim 1, wherein: the pipe body is a steel pipe.
7. A rotary drilling machine is characterized in that: the hole cleaning drill bit as claimed in any one of claims 1-6 is mounted at the end of the drill rod, and the diameter of the circular surface where the exposed end outer edge of each alloy drill bit at the bottom end of the hole cleaning drill bit is located is used as the effective drilling diameter D.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023045329.XU CN214110963U (en) | 2020-12-17 | 2020-12-17 | Hole cleaning drill bit and rotary drilling machine with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023045329.XU CN214110963U (en) | 2020-12-17 | 2020-12-17 | Hole cleaning drill bit and rotary drilling machine with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214110963U true CN214110963U (en) | 2021-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023045329.XU Active CN214110963U (en) | 2020-12-17 | 2020-12-17 | Hole cleaning drill bit and rotary drilling machine with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214110963U (en) |
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2020
- 2020-12-17 CN CN202023045329.XU patent/CN214110963U/en active Active
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