CN210031786U

CN210031786U - Large-diameter rock drilling and filling device

Info

Publication number: CN210031786U
Application number: CN201920744195.9U
Authority: CN
Inventors: 何耀; 寇春武; 周晓均; 勾腊梅; 唐建; 伍春燕
Original assignee: CITIC Guoan Construction Group Co Ltd
Current assignee: CITIC Guoan Construction Group Co Ltd
Priority date: 2019-05-22
Filing date: 2019-05-22
Publication date: 2020-02-07
Anticipated expiration: 2029-05-22

Abstract

The utility model discloses a large-diameter rock drilling and filling device, which comprises a drill rod and a drill bit, wherein the inner wall of the drill rod is provided with a cavity, a high-pressure water spray pipe is arranged in the cavity and is communicated with the bottom of the drill bit, the drill rod is also provided with a plurality of grout spray pipes, the grout spray pipes are provided with a plurality of through holes, the grout spray pipes are also provided with sleeves, the sleeves are sleeved on the grout spray pipes, and the sleeves can block the through holes; still be equipped with the defeated thick liquid pipe of cover on the spray pipe in the cavity, be equipped with a plurality of connecting pipes on the outer wall of defeated thick liquid pipe, connecting pipe one end and defeated thick liquid pipe intercommunication, be equipped with the connecting block on the other end, the connecting block can remove towards spouting pipe direction, be equipped with in the connecting block and hold the chamber, and the connecting pipe with hold the chamber intercommunication, be equipped with the export that matches with spouting pipe on the connecting block, hold chamber and export intercommunication, telescopic diameter is greater than the diameter of export, it is equipped with the baffle that can plug up the export to hold the intracavity, spout thick liquid pipe and can promote the baffle.

Description

Large-diameter rock drilling and filling device

Technical Field

The utility model relates to a construction equipment technical field of high pressure jet grouting pile, concretely relates to major diameter rock drilling perfusion device.

Background

The high-pressure rotary jet pile is characterized by that it utilizes high-pressure rotating nozzle to spray cement slurry into soil layer and mix it with soil body to form continuous lapped cement reinforced body. The construction occupies less land, has small vibration and lower noise, has the advantages of wood and steel saving, durability, low manufacturing cost and the like, and is widely used in foundation engineering of hydraulic buildings, industrial buildings, civil buildings and bridges.

The high-pressure rotary jet pile machine comprises a drill rod and a drill bit positioned at the lower end of the drill rod, a nozzle is arranged at the lower part of the drill rod close to the drill bit, a slurry conveying pipe is arranged in a hollow rod cavity of the drill rod, the bottom end of the slurry conveying pipe is communicated with the nozzle, and cement slurry is jetted from the nozzle through the slurry conveying pipe. At present, in the process of drilling down in a rock of the existing high-pressure rotary jet pile machine, broken stones easily enter a slurry conveying pipe through a nozzle to cause blockage of the slurry conveying pipe, so that cement slurry cannot flow out normally, the subsequent construction process cannot be continued, manpower and time are consumed to pull a drill rod out of a hole and then dredge the hole, the construction efficiency is reduced, and the construction period is delayed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that overcome not enough among the prior art, aim at provides a major diameter rock drilling perfusion device, can avoid the drill bit to block up the shotcrete pipe at the in-process of boring down, improves the efficiency of construction.

The utility model discloses a following technical scheme realizes:

a large-diameter rock drilling and filling device comprises a drill rod and a drill bit, wherein a cavity is formed in the inner wall of the drill rod, a high-pressure water spray pipe is arranged in the cavity and is communicated with the bottom of the drill bit, a plurality of slurry spray pipes are further arranged on the drill rod, a plurality of through holes are formed in the slurry spray pipes, sleeves are further arranged on the slurry spray pipes and are sleeved on the slurry spray pipes, and the through holes can be plugged by the sleeves; still be equipped with the defeated thick liquid pipe of cover on the spray pipe in the cavity, be equipped with a plurality of connecting pipes on the outer wall of defeated thick liquid pipe, connecting pipe one end and defeated thick liquid pipe intercommunication are equipped with the connecting block on the other end, and the connecting block can move towards spouting pipe direction, is equipped with in the connecting block and holds the chamber to the connecting pipe with hold the chamber intercommunication, be equipped with the export that matches with spouting pipe on the connecting block, hold chamber and export intercommunication, telescopic diameter is greater than the diameter of export, it is equipped with the baffle that can plug up the export to hold the intracavity, spouts the thick liquid pipe and can promote the baffle and move towards keeping.

Furthermore, a fourth elastic piece is further arranged on the connecting pipe and sleeved on the connecting pipe, one end of the fourth elastic piece is connected with the connecting block, and the other end of the fourth elastic piece is connected with the slurry conveying pipe.

Furthermore, still be equipped with first elastic component in the holding intracavity of connecting block, first elastic component one end and the inner wall connection of keeping away from the export direction, the other end is connected with the baffle.

Further, still be equipped with a plurality of recesses on the inner wall of cavity, be equipped with the third elastic component in the recess, third elastic component one end and groove connection, the other end is connected with the connecting block, and when the third elastic component was in the non-compression state, the shotcrete pipe was located the outside of export.

Further, the sum of the elastic forces of the third elastic member is greater than the elastic force of the fourth elastic member.

Further, still be equipped with the second elastic component on the sleeve, second elastic component one end and muffjoint, the other end is connected with the inner wall of cavity, and when the second elastic component was in the non-compression state, the sleeve can be stopped up the through-hole.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

1. the utility model relates to a major diameter rock drilling perfusion device, because the drill bit drives the drilling rod in the in-process of drilling down, the elasticity that the third elastic component produced promotes the connecting block and moves towards defeated thick liquid pipe direction, make the shotcrete pipe not insert in the connecting block, utilize the sleeve on the shotcrete pipe to plug up the shotcrete pipe, thereby make the in-process of drilling down of drill bit, the rubble impurity that gets into in the shotcrete pipe can't get into in defeated thick liquid pipe, thereby effectively avoided the impurity to block up the circumstances emergence of defeated thick liquid pipe, improved the efficiency of construction;

2. the utility model relates to a major diameter rock drilling perfusion device, drilling depth carries out the slip casting under the drill bit completion, when defeated thick liquid intraductal transport cement thick liquid, the grout enters into the intracavity that holds to the connecting block through the connecting pipe, force the connecting block to remove towards the shotcrete pipe direction, and then make the shotcrete pipe insert to the export in, and promote the baffle and remove, thereby make the through-hole on the shotcrete pipe with hold the chamber intercommunication, make the grout that holds the intracavity flow in to the shotcrete pipe through the through-hole, final cement flows through the shotcrete pipe, carry out the slip casting operation to the hole that the drill bit bored.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the present invention during grouting;

FIG. 3 is an enlarged schematic view of part A of the present invention;

FIG. 4 is an enlarged view of the part B of the present invention;

fig. 5 is a schematic structural view of the guniting pipe of the present invention.

Reference numbers and corresponding part names in the drawings:

1-drill bit, 2-high-pressure water spray pipe, 3-slurry conveying pipe, 4-drill rod, 5-connecting block, 6-cavity, 7-slurry spraying pipe, 8-outlet, 9-baffle, 10-first elastic part, 11-connecting pipe, 12-second elastic part, 13-third elastic part, 14-containing cavity, 15-fourth elastic part, 16-sleeve and 17-through hole.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.

Examples

As shown in fig. 1-5, the utility model relates to a major diameter rock drilling perfusion device, including drilling rod 4 and the drill bit 1 of setting in drilling rod 4 bottom, the inside of drilling rod 4 is equipped with cavity 6, be equipped with high pressure spray pipe 2 in the cavity 6 to high pressure spray pipe 2 and the bottom intercommunication of drill bit 1, the high pressure spray pipe 2 of setting is used for carrying the high pressure water to drill bit 1, destroys the soil body, makes drill bit 1 easily carry out the drilling operation to soil.

The cavity 6 is also internally provided with a slurry conveying pipe 3, the diameter of the slurry conveying pipe 3 is larger than that of the water spraying pipe 2, the slurry conveying pipe 3 is sleeved on the water spraying pipe 2, the bottom end of the slurry conveying pipe 3 is of a closed structure, the outer wall of the slurry conveying pipe 3 is also provided with a plurality of connecting pipes 11, the connecting pipes 11 are of a corrugated pipe structure, so that the length of the connecting pipes can be changed, one ends of the connecting pipes 11 are communicated with the inside of the slurry conveying pipe 3, the other ends of the connecting pipes are provided with connecting blocks 5, accommodating cavities 14 are formed in the connecting blocks 5, and the connecting pipes 11 are communicated with the accommodating cavities 14, so that cement slurry in the slurry conveying pipe 3 can enter the accommodating cavities 14 of the connecting blocks 5; still be equipped with fourth elastic component 15 on the connecting pipe 11, fourth elastic component 15 is the spring, has certain elasticity to fourth elastic component 15 overlaps on connecting pipe 11, and the one end of fourth elastic component 15 and defeated thick liquid pipe 3's outer wall connection, the other end and connecting block 5's outer wall connection, and the fourth elastic component 15 of setting is located and supports connecting block 5, guarantees that connecting block 5 can stably be located the side of defeated thick liquid pipe 3.

The inside of connecting block 5 still is equipped with first elastic component 10, and first elastic component 10 is the spring, has certain elasticity, and the one end of first elastic component 10 and the interior wall connection of connecting block 5 are equipped with baffle 8 on the other end, still be equipped with export 8 on connecting block 5, the diameter of export 8 is less than baffle 8's diameter, under the effect of first elastic component 10, can promote baffle 8 and block up export 8 shutoff, baffle 8 is equipped with the sealing washer on the panel towards export 8 directions, guarantees the gas tightness between baffle 8 and the export 8.

The inner wall of the cavity 6 of the drill rod 4 is further provided with a plurality of accommodating grooves, the connecting block 5 can move into the accommodating grooves, the drill rod 4 is further provided with a plurality of guniting pipes 7 matched with the outlets 8, the guniting pipes 7 are horizontally inserted into the drill rod 4, the drill rod 4 is communicated with the accommodating grooves in the cavity 6, the drill rod 4 and the connecting block 5 are on the same horizontal plane, the outer wall of the circumference of the guniting pipe 7 is further provided with a plurality of through holes 17, the through holes 17 are close to the tail ends of the guniting pipes 7 towards the direction of the connecting block 5, the guniting pipe 7 is further provided with a sleeve 16 matched with the guniting pipes 7, the sleeve 16 is sleeved on the guniting pipes 7, the sleeve 16 can move on the guniting pipes 7 along the direction of the outer walls of the guniting pipes 7 to open and close the through holes 17, the sleeve 16 is further provided with a second elastic piece 12, one end of, when the second elastic part 12 is not acted by external force, the elastic force generated by the second elastic part 12 can force the sleeve 16 to plug the through hole 17, the diameter of the sleeve 16 is larger than that of the outlet 8, and the inner wall of the outlet 8 is also provided with a sealing ring to ensure the air tightness between the outlet 8 and the guniting pipe 7; still be equipped with a plurality of third elastic component 13 on the inner wall of holding tank, third elastic component 13 also is the spring, has certain elasticity, the one end of third elastic component 13 and the inner wall connection of holding tank, the other end is connected with connecting block 5 to the elasticity sum of third elastic component 13 is greater than the elasticity of fourth elastic component 15, makes third elastic component 13 receive the effect of external force again down, and the elasticity that third elastic component 13 produced forces whitewashing pipe 7 and connecting block 5 to separate.

When the drill bit 1 drives the drill rod 4 to drill downwards, the sleeve 16 is arranged on the guniting pipe 7, and the sleeve 16 blocks the through hole 17 under the action of the second elastic piece 12, so that broken stones can only enter the guniting pipe 7 and cannot continuously enter the slurry conveying pipe 3 in the drilling process of the drill bit 1, the blockage of the slurry conveying pipe 3 is avoided, the broken stones in the guniting pipe 7 are easy to discharge by impact force generated by cement slurry when the cement slurry is introduced into the slurry conveying pipe 7 due to the short length of the guniting pipe 7, the whole slurry conveying pipe 3 cannot be affected, the conventional guniting pipe and the conventional slurry conveying pipe are in a communicated structure, so that the broken stones can gradually enter the guniting pipe along with the guniting pipe in the drilling process of the drill bit, and finally a large amount of silt is accumulated in the slurry conveying pipe, and the blockage of the slurry conveying pipe is caused, particularly, the overall structure of the slurry conveying pipe and the guniting pipe is L-shaped, when some irregular crushed stones enter the grout conveying pipe, the grout conveying pipe is easy to block, and the grout spraying pipe and the grout conveying pipe are in a disconnected state in the drilling process, so that the crushed stones can only enter the grout spraying pipe, and the cement paste is easy to quickly discharge the crushed stones accumulated in the grout spraying pipe due to the fact that the grout spraying pipe is short in length and is a straight line segment.

When the drill bit finishes drilling the rock and grouting operation is needed to be performed on a hole which is taken by a brick, cement slurry is introduced into the slurry conveying pipe 3, cement enters the accommodating cavity 14 of the connecting block 5 through the connecting pipe 11 and pushes the connecting block 5 to move towards the direction of the slurry spraying pipe 7, so that the slurry spraying pipe 7 is inserted into the outlet 8, the connecting block 5 pushes the sleeve 16 to compress the second elastic part 12 due to the fact that the diameter of the outlet 8 is smaller than that of the sleeve 16, the slurry spraying pipe 7 with the section of the through hole 17 pushes the baffle plate 9 and enters the accommodating cavity 14, and finally the accommodating cavity 14 is communicated with the slurry spraying pipe 7 through the through hole 17, so that the cement slurry in the accommodating cavity 14 flows out through the slurry spraying pipe 7, and grouting operation is performed on the drilled hole; when the slip casting operation is completed, because the pressure of cement paste introduced into the grout conveying pipe 3 is reduced, the elastic force generated by the third elastic part 13 pushes the connecting block 5 to move towards the direction of the grout conveying pipe 3, finally, the grout spraying pipe 7 is separated from the connecting block 5, the slip casting operation is completed, the quick break stopping operation of the cement paste is realized, the cement paste cleaning treatment is performed on the grout conveying pipe 3 and the grout spraying pipe 7, and the cement is prevented from being solidified in the grout conveying pipe 3 and the grout spraying pipe 7.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A large-diameter rock drilling and filling device comprises a drill rod (4) and a drill bit (1), wherein a cavity (6) is formed in the inner wall of the drill rod (4), a high-pressure water spray pipe (2) is arranged in the cavity (6), and the high-pressure water spray pipe (2) is communicated with the bottom of the drill bit (1), and is characterized in that a plurality of slurry spray pipes (7) are further arranged on the drill rod (4), a plurality of through holes (17) are formed in the slurry spray pipes (7), a sleeve (16) is further arranged on the slurry spray pipes (7), the sleeve (16) is sleeved on the slurry spray pipes (7), and the sleeve (16) can block the through holes (17);

still be equipped with defeated thick liquid pipe (3) of cover on spray pipe (2) in cavity (6), be equipped with a plurality of connecting pipes (11) on the outer wall of defeated thick liquid pipe (3), connecting pipe (11) one end and defeated thick liquid pipe (3) intercommunication are equipped with connecting block (5) on the other end, and connecting block (5) can move towards spouting thick liquid pipe (7) direction, are equipped with in connecting block (5) and hold chamber (14) to connecting pipe (11) and holding chamber (14) intercommunication, be equipped with export (8) that match with spouting thick liquid pipe (7) on connecting block (5), hold chamber (14) and export (8) intercommunication, the diameter of sleeve (16) is greater than the diameter of export (8), it can be equipped with baffle (9) that export (8) are plugged up in chamber (14) to hold, spouts thick liquid pipe (7) can promote baffle (9) and move towards keeping away from export (8) direction.

2. A large diameter rock drilling and grouting device according to claim 1, characterised in that a fourth elastic member (15) is arranged on the connecting pipe (11), the fourth elastic member (15) is sleeved on the connecting pipe (11), and one end of the fourth elastic member (15) is connected with the connecting block (5) and the other end is connected with the slurry conveying pipe (3).

3. A large diameter rock drilling and filling device according to claim 1, characterized in that a first elastic member (10) is further arranged in the containing cavity (14) of the connecting block (5), one end of the first elastic member (10) is connected with the inner wall far away from the outlet (8) direction, and the other end is connected with the baffle plate (9).

4. A large diameter rock drilling and grouting device according to claim 2, characterised in that the inner wall of the cavity (6) is also provided with grooves, a third elastic element (13) is arranged in the grooves, one end of the third elastic element (13) is connected with the grooves, the other end is connected with the connecting block (5), and when the third elastic element (13) is in a non-compressed state, the guniting pipe (7) is positioned outside the outlet (8).

5. A large diameter rock drilling and filling device according to claim 4, characterized in that the sum of the spring forces of the third spring member (13) is greater than the spring force of the fourth spring member (15).

6. A large diameter rock drilling and grouting device according to claim 1, characterised in that the sleeve (16) is also provided with a second elastic element (12), the second elastic element (12) being connected to the sleeve (16) at one end and to the inner wall of the cavity (6) at the other end, the sleeve (16) being capable of blocking the through hole (17) when the second elastic element (12) is in the non-compressed state.