CN210049229U - Double-shaft stirring drill bit with function of eliminating soil body bonding - Google Patents
Double-shaft stirring drill bit with function of eliminating soil body bonding Download PDFInfo
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- CN210049229U CN210049229U CN201920663408.5U CN201920663408U CN210049229U CN 210049229 U CN210049229 U CN 210049229U CN 201920663408 U CN201920663408 U CN 201920663408U CN 210049229 U CN210049229 U CN 210049229U
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Abstract
The utility model discloses a double-shaft stirring drill bit with the function of eliminating soil body bonding, which belongs to the field of pile foundation construction equipment and comprises a drill bit, stirring blades, a conversion device, a horizontal fixed connection device and a drill rod; the drill rod is a hollow cylindrical rod body, an internal thread is arranged on the inner side of the lower end of the drill rod, the drill rod is connected with the drill bit through the thread, and the drill rod is connected with the stirring blade through welding; the conversion device is connected with the drill rod through a buckle; the horizontal fixed connecting device is connected with the conversion device through a bolt. The utility model discloses effectively reduced the frictional resistance when covering soil layer's pressure and cutting the soil body, solved the soil body that stirs the pine around the (mixing) shaft and rotated along with the (mixing) shaft instrument, lead to from spouting mouthful spun grout can not with the weak soil homogeneous mixing, influence the problem of stake quality, realized having eliminated the inclusion on the drill bit through biax stirring drill bit, guaranteed the cement volume of mixing to and the homogeneity of grout and soil, and reduced the volume of returning the thick liquid.
Description
Technical Field
The utility model belongs to pile foundation construction equipment field, concretely relates to biax stirring drill bit with eliminate soil body bonding effect.
Background
A deep-layer cement-soil stirring pile for reinforcing the soft foundation features that cement is used as solidifying agent, and a special stirring machine and slurry pump are used to forcibly stir and mix the soft soil and solidifying agent in deep foundation. The deep stirring technology is officially operated in engineering practice since the seventies of the twentieth century, and is widely applied to the construction of industrial and civil buildings, subways, highways, municipal administration, water conservancy projects, port and navigation channels, offshore facilities and the like at present. In the deep stirring construction, a deep stirrer is adopted to mix the cement paste with the soft soil. The mixer is provided with a core tube, and the head of the core tube is provided with blades. When the mixer rotates, cement slurry is sprayed through the slurry spraying port at the end part of the core pipe and is mixed with soil loosened by the rotating blades to form a cement reinforced body. The stirring head is an important part of the deep layer stirring machine, and directly influences the pile body uniformity of the deep layer stirring pile formed by mixing cement paste and soft soil to determine the reinforcing effect of the foundation.
At present, in the deep stirring construction, a prominent problem is that soil body stirred loosely around a stirring shaft rotates along with a stirring shaft instrument, so that cement paste sprayed out from a grout spraying opening cannot be uniformly mixed with soft soil, and the pile forming quality is influenced. The double-shaft stirring drill bit with the function of eliminating the soil body bonding can effectively eliminate inclusions on the drill bit and ensure the cement mixing amount and the mixing uniformity of cement paste and soil.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned technical problem who exists among the prior art, the utility model provides a biax stirring drill bit with eliminate soil body bonding has overcome the not enough of prior art. The surrounding soil body is fully stirred through the double-shaft stirring drill bit, and slurry can be more efficiently filled into the surrounding soil body by combining the drill rod nozzle behind the stirring blade, and the slurry return amount is reduced; through horizontal fixed connection device, inclusion on the drill bit can effectually be eliminated, the cement doping amount is guaranteed to and the mixing homogeneity of grout and soil.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a biax stirring drill bit with eliminate soil body bonding effect which characterized in that: comprises a drill bit, a stirring blade, a conversion device, a horizontal fixed connection device and a drill rod; the drill rod is a hollow cylindrical rod body, an internal thread is arranged on the inner side of the lower end of the drill rod, the drill rod is connected with the drill bit through the thread, and the drill rod is connected with the stirring blade through welding; the conversion device is connected with the drill rod through a buckle; the horizontal fixed connecting device is connected with the conversion device through a bolt;
the stirring blades comprise a first-stage stirring blade, a second-stage stirring blade and a third-stage stirring blade;
the drill bit comprises a head stirring blade, a drill bit connecting section and a drill bit nozzle;
the horizontal fixed connecting device comprises horizontal blades, horizontal connecting rods and a high-strength fixing component;
the conversion device comprises a protective sleeve and a connecting sleeve;
the drill rod comprises a drill rod body, a liquid inlet channel and a protruding node.
A drill tooth is arranged below the primary stirring blade at intervals of 5-20cm, the drill tooth is made of a diamond micro powder and hard alloy composite material, the surface of the drill tooth is covered with a diamond particle coating, and the diameter range of the diamond particles is 0.2-1 mm; and drill rod nozzles are arranged behind the first-stage stirring blades and are of a conical structure, and the diameter range of the minimum position of each nozzle is 10-30 mm.
The rear parts of the first-stage stirring blade, the second-stage stirring blade and the third-stage stirring blade are all in a differentiated reinforcement structure form, the thickness of the blades is reduced in a linear rule from one end close to the drill rod to one end far away from the drill rod, the thickness range of one end, far away from the drill rod, of the stirring blades is 5-30mm, and the thickness range of one end, close to the drill rod, of the stirring blades is 10-60 mm.
The second-stage stirring blade and the third-stage stirring blade are provided with rectangular hollow structures at one end far away from the drill rod, the horizontal axis of each rectangular hollow structure is consistent with the horizontal central axis of each blade, the length of each rectangular hollow structure is 1/4-1/3 of the length of each blade, and the width of each rectangular hollow structure is 1/4-1/3 of the width of each blade.
The drill bit is provided with two head stirring blades, the head stirring blades are connected with the drill bit in a welding mode, the head stirring blades are of a spiral structure, head drill teeth with different angles are continuously arranged on the edges of the head stirring blades, and the integral angle of the head drill teeth is consistent with the spiral structure of the head stirring blades; the lower end of the drill bit is provided with a drill bit nozzle which is of a conical structure, and the diameter range of the minimum position of the nozzle is 10-30 mm.
Two protruding nodes are arranged at the front end and the rear end of the drill rod between the first-stage stirring blade and the second-stage stirring blade and between the second-stage stirring blade and the third-stage stirring blade respectively, the protruding nodes are of a cubic structure, the side length range is 2-5cm, and the center distance between the two protruding nodes is 5-20 cm.
The protective sleeve is formed by combining two symmetrical semicircular sleeves and comprises an annular bulge at the upper end and the lower end and a middle main body, the height of the annular bulge is 1-10cm, the protective sleeve is made of a wear-resistant metal material, and the wear resistance of the protective sleeve is slightly lower than that of a drill rod and a connecting sleeve; the diameter of the inner wall of the protective sleeve is 0.5-2mm larger than that of the outer wall of the drill rod; two concave nodes are arranged on the inner wall of the protective sleeve, the concave nodes are of a cubic structure, and the side length of each concave node is 1-5mm longer than that of the convex node on the drill rod.
The connecting sleeve is formed by combining two symmetrical semicircular sleeves, the two semicircular sleeves on the outer side are connected through bolts, and the two semicircular sleeves on the inner side are connected with the horizontal connecting rod through bolts.
The horizontal connecting rod is connected with the high-strength reinforcing member in a welding mode, and the high-strength reinforcing member is connected with the horizontal blade in a bolt mode; the high-strength reinforcing component is made of hard alloy composite materials, the horizontal blade is an elastic steel plate, the horizontal blade is cold-rolled steel with the carbon content of less than 0.25%, and the thickness range of the horizontal blade is 1-10 mm.
The number of the drill rods is two, and the center distance between the two drill rods is 2-3 times of the sum of the length of the first-stage stirring blade and the radius of the drill rods.
The utility model discloses the beneficial technological effect who brings:
(1) the utility model is provided with three-stage stirring blades, after the blades at the lowest layer cut and turn the soil body, the drilling is continued, then the blades at the two layers at the upper part are driven by the drill rod to rotate at high speed, and the soil body after turning is further stirred, so that the soil body is stirred more uniformly, and the pressure of an overlying soil layer is effectively reduced; (2) the three-stage blades are in a differentiated reinforced structural form, so that the frictional resistance is reduced when the soil body is cut, the thickness of the blade close to one end of the drill rod is larger, and the blade is favorable for bearing larger moment effect; (3) the spiral stirring blades are arranged on the drill bit, so that the drilling force in the drilling process is increased, and the direction of the drill bit is not easy to deviate; (4) the surrounding soil body is fully stirred through the double-shaft stirring drill bit, and slurry can be more efficiently filled into the surrounding soil body by combining the drill rod nozzle behind the stirring blade, and slurry return is reduced; (5) through horizontal fixed connection device, inclusion on the drill bit can effectually be eliminated, the cement doping amount is guaranteed, the homogeneity of mixing of grout and soil is guaranteed.
Drawings
Fig. 1 is an overall structure diagram of the double-shaft stirring drill with the function of eliminating soil body bonding.
Fig. 2 is a front view of the drill rod in the double-shaft stirring drill bit with the function of eliminating the soil body bonding.
Fig. 3 is a front view of the protective sleeve in the double-shaft stirring drill bit with the function of eliminating the soil body bonding.
Fig. 4 is a top view of the connecting sleeve in the double-shaft stirring drill bit with the function of eliminating soil body bonding.
Fig. 5 is a schematic structural diagram of the linking device in the double-shaft stirring drill bit with the function of eliminating soil body bonding.
Fig. 6 is a schematic structural view of the horizontal fixed connection device in the double-shaft stirring drill bit with the function of eliminating soil body bonding.
Fig. 7 is a schematic structural view of a second-stage stirring blade in a double-shaft stirring drill bit with the function of eliminating soil body bonding.
Fig. 8 is a front view of the drill bit of the double-shaft stirring drill bit with the function of eliminating soil body bonding.
Wherein, 1-a drill bit; 2-first-stage stirring blades; 3-a second-stage stirring blade; 4-three stages of stirring blades; 5-a conversion device; 6-horizontal fixed connection device; 7-a drill rod; 8-drill pipe nozzle; 9-drill nozzle; 10-blade drilling teeth; 11-a drill rod body; 12-a convex node; 13-a liquid inlet channel; 14-an annular projection; 15-a central body; 16-a reentrant node; 17-a protective sleeve; 18-bolt; 19-horizontal connecting rods; 20-a nut; 21-high-strength reinforcement member; 22-horizontal blades; 23-rectangular hollow structure; 24-head stirring blades; 25-drilling teeth at the head; 26-a drill bit connection section; 27-connecting the sleeve.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments:
example 1:
carrying out a model pile stirring test in a miscellaneous fill field, setting the pile forming depth to be 5m, adopting a cement soil stirring method for construction, setting A, B two groups of tests, wherein each group is provided with 3 test pieces, and A group is an experiment group and selects the stirring drill bit of the utility model; group B is a control group, a stirring drill bit universal in the market is adopted, and the specific technology is as follows:
as shown in fig. 1 to 8, a double-shaft stirring drill bit with a function of eliminating soil body bonding comprises a drill bit 1, stirring blades, a conversion device 5, a horizontal fixed connection device 6 and a drill rod 7; the drill rod 7 is a hollow cylindrical rod body, an internal thread is arranged on the inner side of the lower end of the drill rod 7, the drill rod 7 is in threaded connection with the drill bit 1, and the drill rod 7 is connected with the stirring blade through welding; the conversion device 5 is connected with the drill rod 7 through a buckle; the horizontal fixed connecting device 6 is connected with the conversion device 5 through bolts.
The stirring blade comprises a first-stage stirring blade 2, a second-stage stirring blade 3 and a third-stage stirring blade 4.
The drill bit 1 comprises a head stirring blade 24, a drill bit connecting section 26 and a drill bit nozzle 9.
The horizontal fixed connecting device 6 comprises a horizontal blade 22, a horizontal connecting rod 19 and a high-strength fixing member 21.
The conversion device 5 comprises a protective sleeve 17 and a connection sleeve 27.
The drill pipe 7 comprises a pipe body 11, a liquid inlet channel 13 and a raised node 12.
A blade drilling tooth 10 is arranged below the primary stirring blade 2 at intervals of 5-20cm, the blade drilling tooth 10 is made of a composite material of diamond micropowder and hard alloy, a diamond particle coating covers the surface of the blade drilling tooth 10, and the diameter range of the diamond particles is 0.2-1 mm; and drill rod nozzles 8 are arranged behind the first-stage stirring blades 2, the drill rod nozzles 8 are of conical structures, and the diameter range of the minimum position of each nozzle is 10-30 mm.
Preferably, the rear parts of the first-stage stirring blade 2, the second-stage stirring blade 3 and the third-stage stirring blade 4 are in a differentiated reinforcement structure form, and the blade thickness is linearly and regularly reduced from one end close to the drill rod 7 to one end far away from the drill rod 7; the thickness range of one end of the stirring blade, which is far away from the drill rod 7, is 5-30mm, and the thickness range of one end of the stirring blade, which is close to the drill rod 7, is 10-60 mm.
The second-stage stirring blade 3 and the third-stage stirring blade 4 are provided with rectangular hollow structures 23 at one end far away from the drill rod 7, the horizontal axis of each rectangular hollow structure 23 is consistent with the horizontal central axis of each blade, the length of each rectangular hollow structure 23 is 1/4-1/3 of the length of each blade, and the width of each rectangular hollow structure 23 is 1/4-1/3 of the width of each blade.
The drill bit 1 is provided with two head stirring blades 24, the head stirring blades 24 are connected with the drill bit 1 in a welding mode, the head stirring blades 24 are of a spiral structure, head drill teeth 25 with different angles are continuously arranged on the edge of each head stirring blade 24, and the integral angle of each head drill tooth 25 is consistent with the spiral structure of the head stirring blade 24; the lower end of the drill bit 1 is provided with a drill bit nozzle 9, the drill bit nozzle 9 is of a conical structure, and the diameter range of the minimum position of the nozzle is 10-30 mm.
Two protruding nodes 12 are respectively arranged at the front end and the rear end of the drill rod 7 between the first-stage stirring blade 2 and the second-stage stirring blade 3 and between the second-stage stirring blade 3 and the third-stage stirring blade 4, the protruding nodes 12 are of a cubic structure, the side length range is 2-5cm, and the center distance between the two protruding nodes 12 is 5-20 cm.
The protective sleeve 17 is formed by combining two symmetrical semicircular sleeves and comprises an annular bulge 14 at the upper end and the lower end and a middle main body 15, the height of the annular bulge 14 is 1-10cm, the protective sleeve 17 is made of wear-resistant metal materials, and the wear resistance of the protective sleeve is slightly lower than that of the drill rod 7 and the connecting sleeve 27; the diameter of the inner wall of the protective sleeve 17 is 0.5-2mm larger than that of the outer wall of the drill rod 7; two concave nodes 16 are arranged on the inner wall of the protective sleeve 17, the concave nodes 16 are in a cubic structure, and the side length of each concave node 16 is 1-5mm longer than that of the convex node 12 on the drill rod 7.
The connecting sleeve 27 is formed by combining two symmetrical semicircular sleeves, the two semicircular sleeves on the outer side are connected by bolts, and the two semicircular sleeves on the inner side are connected with the horizontal connecting rod 19 through bolts.
The horizontal connecting rod 19 is connected with the high-strength reinforcing member 21 in a welding mode, and the high-strength reinforcing member 21 is connected with the horizontal blade 22 in a bolt mode; the high-strength reinforcing member 21 is made of hard alloy composite materials, the horizontal blade 22 is an elastic steel plate, the horizontal blade 22 is cold-rolled steel with the carbon content of less than 0.25%, and the thickness range of the horizontal blade is 1-10 mm.
The number of the drill rods 7 is two, and the center distance between the two drill rods 7 is 2-3 times of the sum of the length of the first-stage stirring blade 2 and the radius of the drill rods 7.
The construction process of two stirring and two spraying is adopted for construction, the average stirring resistance of the test pieces in the group A is 2/3 of the test pieces in the group B in the construction process, the average slurry return amount of the test pieces in the group A is 1/3 of the test pieces in the group B, after the pile is formed for 28d, the pile forming quality is detected by excavation, and the results show that the pile forming quality of the two groups of test pieces is good.
Example 2:
when a construction site is used for testing piles, a test pile is added, and the test piles which are added are adopted the utility model discloses a stirring drill bit, the design rule becomes the stake degree of depth and is 13m, adopts the cement mixing method construction, and wherein, the soil layer in place is:
the specific technology is as follows:
as shown in fig. 1 to 8, a double-shaft stirring drill bit with a function of eliminating soil body bonding comprises a drill bit 1, stirring blades, a conversion device 5, a horizontal fixed connection device 6 and a drill rod 7; the drill rod 7 is a hollow cylindrical rod body, an internal thread is arranged on the inner side of the lower end of the drill rod 7, the drill rod 7 is in threaded connection with the drill bit 1, and the drill rod 7 is connected with the stirring blade through welding; the conversion device 5 is connected with the drill rod 7 through a buckle; the horizontal fixed connecting device 6 is connected with the conversion device 5 through bolts.
The stirring blade comprises a first-stage stirring blade 2, a second-stage stirring blade 3 and a third-stage stirring blade 4.
The drill bit 1 comprises a head stirring blade 24, a drill bit connecting section 26 and a drill bit nozzle 9.
The horizontal fixed connecting device 6 comprises a horizontal blade 22, a horizontal connecting rod 19 and a high-strength fixing member 21.
The conversion device 5 comprises a protective sleeve 17 and a connection sleeve 27.
The drill pipe 7 comprises a pipe body 11, a liquid inlet channel 13 and a raised node 12.
A blade drilling tooth 10 is arranged below the primary stirring blade 2 at intervals of 5-20cm, the blade drilling tooth 10 is made of a composite material of diamond micropowder and hard alloy, a diamond particle coating covers the surface of the blade drilling tooth 10, and the diameter range of the diamond particles is 0.2-1 mm; and drill rod nozzles 8 are arranged behind the first-stage stirring blades 2, the drill rod nozzles 8 are of conical structures, and the diameter range of the minimum position of each nozzle is 10-30 mm.
Preferably, the rear parts of the first-stage stirring blade 2, the second-stage stirring blade 3 and the third-stage stirring blade 4 are in a differentiated reinforcement structure form, and the blade thickness is linearly and regularly reduced from one end close to the drill rod 7 to one end far away from the drill rod 7; the thickness range of one end of the stirring blade, which is far away from the drill rod 7, is 5-30mm, and the thickness range of one end of the stirring blade, which is close to the drill rod 7, is 10-60 mm.
The second-stage stirring blade 3 and the third-stage stirring blade 4 are provided with rectangular hollow structures 23 at one end far away from the drill rod 7, the horizontal axis of each rectangular hollow structure 23 is consistent with the horizontal central axis of each blade, the length of each rectangular hollow structure 23 is 1/4-1/3 of the length of each blade, and the width of each rectangular hollow structure 23 is 1/4-1/3 of the width of each blade.
The drill bit 1 is provided with two head stirring blades 24, the head stirring blades 24 are connected with the drill bit 1 in a welding mode, the head stirring blades 24 are of a spiral structure, head drill teeth 25 with different angles are continuously arranged on the edge of each head stirring blade 24, and the integral angle of each head drill tooth 25 is consistent with the spiral structure of the head stirring blade 24; the lower end of the drill bit 1 is provided with a drill bit nozzle 9, the drill bit nozzle 9 is of a conical structure, and the diameter range of the minimum position of the nozzle is 10-30 mm.
Two protruding nodes 12 are respectively arranged at the front end and the rear end of the drill rod 7 between the first-stage stirring blade 2 and the second-stage stirring blade 3 and between the second-stage stirring blade 3 and the third-stage stirring blade 4, the protruding nodes 12 are of a cubic structure, the side length range is 2-5cm, and the center distance between the two protruding nodes 12 is 5-20 cm.
The protective sleeve 17 is formed by combining two symmetrical semicircular sleeves and comprises an annular bulge 14 at the upper end and the lower end and a middle main body 15, the height of the annular bulge 14 is 1-10cm, the protective sleeve 17 is made of wear-resistant metal materials, and the wear resistance of the protective sleeve is slightly lower than that of the drill rod 7 and the connecting sleeve 27; the diameter of the inner wall of the protective sleeve 17 is 0.5-2mm larger than that of the outer wall of the drill rod 7; two concave nodes 16 are arranged on the inner wall of the protective sleeve 17, the concave nodes 16 are in a cubic structure, and the side length of each concave node 16 is 1-5mm longer than that of the convex node 12 on the drill rod 7.
The connecting sleeve 27 is formed by combining two symmetrical semicircular sleeves, the two semicircular sleeves on the outer side are connected by bolts, and the two semicircular sleeves on the inner side are connected with the horizontal connecting rod 19 through bolts.
The horizontal connecting rod 19 is connected with the high-strength reinforcing member 21 in a welding mode, and the high-strength reinforcing member 21 is connected with the horizontal blade 22 in a bolt mode; the high-strength reinforcing member 21 is made of hard alloy composite materials, the horizontal blade 22 is an elastic steel plate, the horizontal blade 22 is cold-rolled steel with the carbon content of less than 0.25%, and the thickness range of the horizontal blade is 1-10 mm.
The number of the drill rods 7 is two, and the center distance between the two drill rods 7 is 2-3 times of the sum of the length of the first-stage stirring blade 2 and the radius of the drill rods 7.
Adopt two construction process constructions that stir two and spout, have in the work progress the utility model discloses the average stirring resistance of the experimental stake of stirring drill bit is 2/3 of the experimental stake of conventional stirring drill bit, and the average volume of returning the thick liquid has reduced 2/3 for the experimental stake of conventional stirring drill bit.
The utility model has the advantages that the double-shaft stirring drill bit with the function of eliminating the soil body bonding effectively reduces the pressure of an overlying soil layer and the friction resistance when cutting the soil body, so that the drilling force in the drilling process is increased, and the direction of the drill bit is not easy to deviate; the problem of the soil body of stirring the pine around the (mixing) shaft rotates along with the (mixing) shaft instrument, lead to leading to from grout spout mouthful blowout can not evenly mix with the weak soil, influence pile quality is solved, realized eliminating the inclusion on the drill bit through the biax stirring drill bit, guaranteed the cement volume of mixing and the homogeneity of grout and soil to the mud rate of returning has been reduced.
Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention also belong to the protection scope of the present invention.
Claims (10)
1. The utility model provides a biax stirring drill bit with eliminate soil body bonding effect which characterized in that: comprises a drill bit, a stirring blade, a conversion device, a horizontal fixed connection device and a drill rod; the drill rod is a hollow cylindrical rod body, an internal thread is arranged on the inner side of the lower end of the drill rod, the drill rod is connected with the drill bit through the thread, and the drill rod is connected with the stirring blade through welding; the conversion device is connected with the drill rod through a buckle; the horizontal fixed connecting device is connected with the conversion device through a bolt;
the stirring blades comprise a first-stage stirring blade, a second-stage stirring blade and a third-stage stirring blade;
the drill bit comprises a head stirring blade, a drill bit connecting section and a drill bit nozzle;
the horizontal fixed connecting device comprises horizontal blades, horizontal connecting rods and a high-strength fixing component;
the conversion device comprises a protective sleeve and a connecting sleeve;
the drill rod comprises a drill rod body, a liquid inlet channel and a protruding node.
2. The double-shaft stirring drill bit with the function of eliminating soil body bonding as claimed in claim 1, is characterized in that: a drill tooth is arranged below the first-stage stirring blade at intervals of 5-20cm, the drill tooth is made of a diamond micro powder and hard alloy composite material, the surface of the drill tooth is covered with a diamond particle coating, and the diameter range of the diamond particles is 0.2-1 mm; and drill rod nozzles are arranged behind the first-stage stirring blades and are of a conical structure, and the diameter range of the minimum position of each nozzle is 10-30 mm.
3. The double-shaft stirring drill bit with the function of eliminating soil body bonding as claimed in claim 1, is characterized in that: the rear parts of the first-stage stirring blade, the second-stage stirring blade and the third-stage stirring blade all adopt a differentiated reinforcement structure form, the thickness of the blades is reduced in a linear rule from one end close to the drill rod to one end far away from the drill rod, the thickness range of one end, far away from the drill rod, of the stirring blades is 5-30mm, and the thickness range of one end, close to the drill rod, of the stirring blades is 10-60 mm.
4. The double-shaft stirring drill bit with the function of eliminating soil body bonding as claimed in claim 1, is characterized in that: the second-stage stirring blade and the third-stage stirring blade are provided with rectangular hollow structures at one end far away from the drill rod, the horizontal axis of each rectangular hollow structure is consistent with the horizontal central axis of each blade, the length of each rectangular hollow structure is 1/4-1/3 of the length of each blade, and the width of each rectangular hollow structure is 1/4-1/3 of the width of each blade.
5. The double-shaft stirring drill bit with the function of eliminating soil body bonding as claimed in claim 1, is characterized in that: the drill bit is provided with two head stirring blades, the head stirring blades are connected with the drill bit in a welding mode, the head stirring blades are of a spiral structure, head drill teeth with different angles are continuously arranged on the edges of the head stirring blades, and the integral angle of the head drill teeth is consistent with the spiral structure of the head stirring blades; the lower end of the drill bit is provided with a drill bit nozzle which is of a conical structure, and the diameter range of the minimum position of the nozzle is 10-30 mm.
6. The double-shaft stirring drill bit with the function of eliminating soil body bonding as claimed in claim 1, is characterized in that: two protruding nodes are respectively arranged at the front end and the rear end of the drill rod between the first-stage stirring blade and the second-stage stirring blade and between the second-stage stirring blade and the third-stage stirring blade, the protruding nodes are of a cubic structure, the side length range is 2-5cm, and the center distance between the two protruding nodes is 5-20 cm.
7. The double-shaft stirring drill bit with the function of eliminating soil body bonding as claimed in claim 1, is characterized in that: the protective sleeve is formed by combining two symmetrical semicircular sleeves and comprises an annular bulge at the upper end and the lower end and a middle main body, the height of the annular bulge is 1-10cm, the protective sleeve is made of wear-resistant metal materials, and the wear resistance of the protective sleeve is slightly lower than that of a drill rod and a connecting sleeve; the diameter of the inner wall of the protective sleeve is 0.5-2mm larger than that of the outer wall of the drill rod; two concave nodes are arranged on the inner wall of the protective sleeve, the concave nodes are of a cubic structure, and the side length of each concave node is 1-5mm longer than that of the convex node on the drill rod.
8. The double-shaft stirring drill bit with the function of eliminating soil body bonding as claimed in claim 1, is characterized in that: the connecting sleeve is formed by combining two symmetrical semicircular sleeves, the two semicircular sleeves on the outer side are connected through bolts, and the two semicircular sleeves on the inner side are connected with the horizontal connecting rod through bolts.
9. The double-shaft stirring drill bit with the function of eliminating soil body bonding as claimed in claim 1, is characterized in that: the horizontal connecting rod is connected with the high-strength reinforcing member in a welding mode, and the high-strength reinforcing member is connected with the horizontal blade in a bolt mode; the high-strength reinforcing component is made of hard alloy composite materials, the horizontal blade is an elastic steel plate, the horizontal blade is cold-rolled steel with the carbon content of less than 0.25%, and the thickness range of the horizontal blade is 1-10 mm.
10. The double-shaft stirring drill bit with the function of eliminating soil body bonding as claimed in claim 1, is characterized in that: the number of the drill rods is two, and the distance between the centers of the two drill rods is 2-3 times of the sum of the length of the first-stage stirring blade and the radius of the drill rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920663408.5U CN210049229U (en) | 2019-05-10 | 2019-05-10 | Double-shaft stirring drill bit with function of eliminating soil body bonding |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920663408.5U CN210049229U (en) | 2019-05-10 | 2019-05-10 | Double-shaft stirring drill bit with function of eliminating soil body bonding |
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| CN210049229U true CN210049229U (en) | 2020-02-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110004924A (en) * | 2019-05-10 | 2019-07-12 | 北京中岩大地科技股份有限公司 | A kind of Double shaft stirring drill bit with elimination soil body cementation |
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2019
- 2019-05-10 CN CN201920663408.5U patent/CN210049229U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110004924A (en) * | 2019-05-10 | 2019-07-12 | 北京中岩大地科技股份有限公司 | A kind of Double shaft stirring drill bit with elimination soil body cementation |
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