CN214245699U

CN214245699U - Novel drill rod of triaxial mixing pile machine

Info

Publication number: CN214245699U
Application number: CN202022892407.3U
Authority: CN
Inventors: 刘彦彬
Original assignee: Beijing Dongdi Geotechnical Engineering Co ltd
Current assignee: Beijing Dongdi Geotechnical Engineering Co ltd
Priority date: 2020-12-03
Filing date: 2020-12-03
Publication date: 2021-09-21
Anticipated expiration: 2030-12-03

Abstract

The utility model relates to a novel drilling rod of triaxial stirring stake machine relates to the field of drilling rod, and it includes drilling rod body, whitewashing mouth and drill bit, and the whitewashing mouth is seted up on the drilling rod body, and the inside whitewashing passageway that has opened of drilling rod body, the fixed bottom that sets up at the drilling rod body of drill bit, including lifting unit and stirring portion from bottom to top in proper order on the drilling rod body, the fixed helical blade that is provided with in lifting unit is provided with a plurality of stirring rod in the stirring portion. This application has the effect of improving the stirring effect of triaxial stirring stake machine.

Description

Novel drill rod of triaxial mixing pile machine

Technical Field

The application relates to the field of drill rods, in particular to a novel drill rod of a triaxial mixing pile machine.

Background

The triaxial mixing pile machine is widely applied to the field of foundation pit support and foundation reinforcement, and has the advantages of high construction efficiency, wide applicable soil layer range, high pile body strength and the like.

The present chinese utility model patent that can refer to publication number CN210507426U discloses a drilling rod structure of triaxial stirring stake machine, and it includes drilling rod and drill bit, and drill bit fixed connection is provided with helical blade on the drilling rod. The pile forming process comprises the following steps: the drilling rod drives the drill bit downstream, and the drilling rod upwards promotes the deep soil of soil layer through helical blade, drills out the deep hole, and the rotatory whitewashing of drilling rod simultaneously for grout and soil intensive mixing, thereby make the weak soil induration and improve foundation strength.

In view of the above-mentioned related technologies, the inventor thinks that when a triaxial mixer mixes soil and cement in the deep part of a soil layer, the existing drill rod is difficult to lift the soil at the lower part of the deep hole to the upper part of the deep hole, and the content of the soil at the lower part of the deep hole is higher than that of the soil at the upper part of the deep hole, resulting in low pile-forming quality and poor mixing effect.

SUMMERY OF THE UTILITY MODEL

In order to improve the stirring effect of triaxial stirring stake machine, this application provides a novel drilling rod of triaxial stirring stake machine.

The application provides a pair of novel drilling rod of triaxial stirring stake machine adopts following technical scheme:

the utility model provides a triaxial stirring stake machine's novel drilling rod, drilling rod body, whitewashing mouth and drill bit, the whitewashing mouth is seted up on the drilling rod body, and the inside whitewashing passageway of having opened of drilling rod body, the fixed bottom that sets up at the drilling rod body of drill bit include lifting unit and stirring portion from bottom to top in proper order on the drilling rod body, fixedly on the lifting unit being provided with helical blade, be provided with a plurality of stirring rod in the stirring portion.

Through adopting above-mentioned technical scheme, the drilling rod body drives the drill bit and rotates, and in the drill bit bored into the soil layer, the drill bit downstream formed the deep hole, and the grout spouts in the deep hole through the spouting mouth to mix with the soil in the soil layer, helical blade in the promotion portion carried the soil in the soil layer to the stirring portion in rotating, and the stirring rod in the stirring portion fully mixed the soil in grout and the soil layer, thereby improved the stirring effect of original triaxial stirring stake machine.

Preferably, the lifting part is fixedly connected with a crushing rod, and the crushing rod and the helical blades are arranged in a staggered mode.

Through adopting above-mentioned technical scheme, broken stick sets up between helical blade, and the drilling rod body drives broken stick and rotates, and great clod collides each other in broken stick and the soil layer, and the clod is smashed into the volume by broken stick and is less to be carried to stirring portion by helical blade.

Preferably, the crushing rod is in an elongated shape, and one end of the crushing rod, which is far away from the lifting part, is inclined downwards.

By adopting the technical scheme, the crushing rod is arranged into a strip shape, and the crushing rod is arranged obliquely, so that the crushed soil blocks fall on the spiral blades again and are conveyed to the stirring part by the spiral blades to be stirred; meanwhile, the crushing rod can play a certain stirring role, so that the soil in the deep hole is mixed with the cement paste more uniformly.

Preferably, the crushing rod is fixedly provided with a crushing head, the crushing head is conical, and the tip of the crushing head points to the rotating direction of the crushing rod.

Through adopting above-mentioned technical scheme, through setting up broken head, broken head is coniform, and when broken stick rotated, the pointed end of broken head collided with the clod, and then had strengthened the crushing ability of broken stick for the crushing effect of clod is better.

Preferably, the top of the stirring part is fixedly provided with a blocking disc, and the diameter of the blocking disc is equal to that of the helical blade.

Through adopting above-mentioned technical scheme, the stirring rod mixes grout and soil, and stirring in-process helical blade sends the soil after the breakage and grout to the stirring portion, can spill the deep hole when grout mixes with soil, and through setting up the barrier disc, the liquid interception that the barrier disc will splash is in the deep hole to reduce the sputter of soil and grout mixture.

Preferably, a plurality of stirring heads are fixedly arranged on the stirring rod.

Through adopting above-mentioned technical scheme, fixed being provided with a plurality of stirring heads on the stirring rod, increaseed the area of contact of stirring rod with grout and soil for the mixing of grout and soil is more even, thereby has strengthened the stirring effect of triaxial stirring stake machine.

Preferably, the drill bit is fixedly provided with a ground breaking blade.

By adopting the technical scheme, the drill bit is fixedly provided with the soil breaking blade, when the drill bit body rotates to drive the drill bit to vertically move downwards, and when the drill bit moves to a hydraulic fill bag soil body, the soil breaking blade can cut the geotechnical cloth buried in the soil layer, so that the geotechnical cloth and cement slurry are mixed to form a pile, the possibility that the drill bit body is wound by the geotechnical cloth is reduced, and the drill bit drills a deep hole in the soil layer; meanwhile, when the drill bit meets a sandy soil layer, the soil breaking blade can break the soil layer and then drill down, the strength of the drill bit is enhanced, the application range of the triaxial mixing pile machine is widened,

preferably, the air jet ports are formed in the lifting portion and the stirring portion, the air jet passage is formed in the drill rod body, the air jet direction of the air jet port located in the lifting portion is inclined upwards, and the air jet direction of the air jet port located in the stirring portion is inclined downwards.

Through adopting above-mentioned technical scheme, grout in the promotion portion and the soil after the breakage blow to stirring portion through the air jet, and grout in the stirring portion and the soil after the breakage blow to the promotion portion through the air jet for grout in the deep hole and the soil after the breakage mix fully, thereby improve the stirring effect of triaxial stirring stake machine.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the stirring part is fixedly arranged on the drill rod body, the stirring rod is fixedly connected to the stirring part, and the cement paste and soil in the deep hole are stirred by the stirring rod, so that the stirring effect of the triaxial stirring pile machine is enhanced;

2. the barrier disc is fixedly arranged at the top of the stirring part and intercepts the cement slurry and the soil which are splashed during stirring in the deep hole, so that the splashing of a mixture of the soil and the cement slurry is reduced;

3. through setting up broken stick in promotion portion to fixedly connected with breaks the head on broken stick, makes on the helical blade the great clod of volume and broken head collision and then broken by broken head, makes soil and grout in the deep hole obtain more even mixture.

Drawings

FIG. 1 is a schematic structural diagram of the present application;

fig. 2 is a sectional view intended to show the guniting passage.

Description of reference numerals: 1. a drill rod body; 11. a lifting portion; 111. crushing the rods; 1111. a crushing head; 112. a helical blade; 12. a stirring section; 121. a stirring rod; 1211. a stirring head; 122. a blocking disk; 13. an air jet; 131. a gas injection passage; 14. a guniting port; 141. a guniting passage; 15. a drill bit; 151. a ground breaking blade.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses novel drilling rod of triaxial mixing stake machine. Referring to fig. 1 and 2, the novel drill rod of the triaxial mixing pile machine comprises a drill rod body 1, a guniting port 14 and a drill bit 15, wherein the drill rod body 1 comprises a lifting part 11 and a stirring part 12, the lifting part 11 is located at the lower part of the drill rod body 1, the stirring part 12 is located at the lower part of the drill rod body 1, the drill bit 15 is fixedly connected to the bottom end of the lifting part 11, the guniting port 14 is arranged on the drill rod body 1, and a guniting passage 141 is formed inside the drill rod body 1.

When the triaxial mixing pile machine drills, the drill rod body 1 rotates to drive the drill bit 15 to vertically drill downwards into a soil layer, deep holes are gradually formed in the soil layer, cement paste is sprayed into the deep holes from the cement spraying opening 14 through the cement spraying passage 141 and is mixed with soil in the deep holes, the lifting part 11 lifts the mixture of the soil and the cement paste to the mixing part 12, and the mixture is gradually solidified to form a pile after being mixed by the mixing part 12.

Referring to fig. 1, the drill 15 is in a circular truncated cone shape, four ground breaking blades 151 are uniformly and fixedly arranged on the side surface of the drill 15, the cutting edges of the ground breaking blades 151 point to the rotation direction of the drill 15, and the ground breaking blades 151 are made of tungsten steel.

When the drill rod body 1 rotates to drive the drill bit 15 to move downwards to a soil body of a hydraulic fill bag, the soil breaking blade 151 can cut the geotechnical cloth buried in the soil layer, so that the cut geotechnical cloth is mixed in cement paste, and the drill bit 15 drills a deep hole in the soil layer.

Referring to fig. 1, fixed helical blade 112 and broken stick 111 of being provided with on the promotion portion 11 of triaxial stirring stake machine, broken stick 111 sets up between helical blade 112, and broken stick 111 is rectangular form, and the one end slope that promotion portion 11 was kept away from to broken stick 111 is downward, and a plurality of crushing head 1111 of fixedly connected with on the broken stick 111, and crushing head 1111 is coniformly, and the pointed portion of crushing head 1111 points to the direction of motion of broken stick 111, and grout spraying port 14 is seted up on promotion portion 11.

When the lifting part 11 is located the deep hole, the grout spraying port 14 begins to spray grout, mixes with the soil in the deep hole, carries out certain moist to the soil layer simultaneously to reduce the resistance that receives when the drill bit 15 drills down, the clod that produces when the drill bit 15 drills down contacts with helical blade 112, crushing head 1111 and clod collision between helical blade 112, make the great clod of volume hit the bits of broken head 1111 and break, become the less clod of volume, thereby promote to stirring part 12 by helical blade 112.

Referring to fig. 1, a plurality of stirring rods 121 are fixedly connected to the stirring portion 12, the stirring rods 121 are cylindrical, the stirring rods 121 are perpendicular to the drill rod body 1, a stirring head 1211 is fixedly disposed on each stirring rod 121, the stirring head 1211 is cylindrical, the stirring head 1211 is perpendicular to the stirring rod 121 on which the stirring head 1211 is disposed, and the length direction of the stirring head 1211 is the radial direction of the stirring rod 121. The top of the stirring part 12 is fixedly connected with a circular blocking disc 122, the stirring part 12 is arranged in the center of the blocking disc 122 in a penetrating way and is vertical to the blocking disc 122, and the diameter of the blocking disc 122 is equal to the spiral diameter of the spiral blade 112.

When lifting portion 11 promotes the soil in grout and the deep hole to stirring portion 12, drilling rod body 1 drives stirring portion 12 and rotates, and stirring portion 12 fully contacts with the soil in grout and the deep hole for the soil intensive mixing in grout and the deep hole mixes. When the cement slurry and the soil in the deep hole are mixed, the cement slurry and the soil in the deep hole can rotationally flow in the deep hole under the driving of the stirring rod 121, the blocking disc 122 is fixedly arranged at the upper part of the stirring part 12, and a splashing mixture generated when the cement slurry and the soil in the deep hole flow is blocked in the deep hole, so that the splashing of the cement slurry is reduced.

Referring to fig. 1 and 2, a plurality of air nozzles 13 are respectively arranged on the lifting part 11 and the stirring part 12, an air injection passage 131 is formed in the drill rod body 1, the air injection direction of the air nozzles 13 positioned on the lifting part 11 is inclined upwards, and the air injection direction of the air nozzles 13 positioned on the stirring part 12 is inclined downwards, so that cement slurry and crushed soil blocks in the lifting part 11 and the stirring part 12 are fully mixed.

The implementation principle of the novel drilling rod of the triaxial mixing pile machine in the embodiment of the application is as follows: when triaxial stirring stake machine drilling becomes stake, drilling rod body 1 rotates and drives drill bit 15 vertical downstream and forms the deep hole, broken stick 111 on the promotion portion 11 utilizes broken head 1111 to carry out the breakage with great clod, simultaneously the grout spout 14 spouts the grout into the deep hole in, grout mixes with the clod after the breakage, the clod that produces when promotion portion 11 drills down drill bit 15 and grout promote to stirring portion 12, when drill bit 15 removes to the hydraulic reclamation bag soil body, broken blade 151 can cut geotechnological cloth, make geotechnological cloth after the cutting by the same mixture in grout.

After grout and the clod after the breakage were promoted to stirring portion 12, stirring rod 121 rotated and fully contacted with grout and the clod after the breakage under the drive of drilling rod body 1 for grout and the clod after the breakage intensive mixing, air jet 13 blows grout in the deep hole and the clod after the breakage, makes grout in the deep hole and the clod after the breakage intensive mixing. The blocking disc 122 intercepts splashing mixture generated when cement paste and the crushed soil blocks are mixed in the deep hole, when the drill bit 15 drills down to a set depth, the drill rod body 1 is lifted out of the deep hole, and the mixture of the cement paste and the crushed soil blocks is gradually solidified to form a pile, so that the cement paste and the crushed soil blocks are fully mixed.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a novel drilling rod of triaxial stirring stake machine, includes drilling rod body (1), whitewashing mouth (14) and drill bit (15), whitewashing mouth (14) are seted up on drilling rod body (1), and drilling rod body (1) is inside to be opened has whitewashing passageway (141), and drill bit (15) are fixed to be set up in the bottom of drilling rod body (1), its characterized in that: the drill rod body (1) sequentially comprises a lifting part (11) and a stirring part (12) from bottom to top, wherein the lifting part (11) is fixedly provided with a helical blade (112), and the stirring part (12) is provided with a plurality of stirring rods (121).

2. The novel drill rod of the triaxial mixing pile machine according to claim 1, wherein: the lifting part (11) is fixedly connected with crushing rods (111), and the crushing rods (111) and the helical blades (112) are arranged in a staggered mode.

3. The novel drill rod of the triaxial mixing pile machine according to claim 2, characterized in that: the crushing rod (111) is long, and one end, far away from the lifting part (11), of the crushing rod (111) inclines downwards.

4. The novel drill rod of the triaxial mixing pile machine according to claim 3, characterized in that: broken stick (111) are fixed to be provided with broken head (1111), and broken head (1111) are coniformly, and the point portion of broken head (1111) points to the direction of rotation of broken stick (111).

5. The novel drill rod of the triaxial mixing pile machine according to claim 1, wherein: the top of the stirring part (12) is fixedly provided with a blocking disc (122), and the diameter of the blocking disc (122) is equal to that of the helical blade (112).

6. The novel drill rod of the triaxial mixing pile machine according to claim 1, wherein: a plurality of stirring heads (1211) are fixedly arranged on the stirring rod (121).

7. The novel drill rod of the triaxial mixing pile machine according to claim 1, wherein: and a ground breaking blade (151) is fixedly arranged on the drill bit (15).

8. The novel drill rod of the triaxial mixing pile machine according to claim 1, wherein: air jet ports (13) are formed in the lifting portion (11) and the stirring portion (12), an air jet passage (131) is formed in the drill rod body (1), the air jet direction of the air jet ports (13) located in the lifting portion (11) inclines upwards, and the air jet direction of the air jet ports (13) located in the stirring portion (12) inclines downwards.