CN210049233U

CN210049233U - Construction equipment based on high-pressure jet grouting pile application

Info

Publication number: CN210049233U
Application number: CN201920744711.8U
Authority: CN
Inventors: 程晓波; 陈本义; 冯善斌; 陈思燕; 邓欢; 王长富
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: 2020-02-11
Anticipated expiration: 2029-05-22

Abstract

The utility model discloses a construction equipment based on high pressure jet grouting pile application, including drilling rod and drill bit, the drilling rod inner wall is equipped with the cavity, is equipped with the high pressure spray pipe in the cavity to the high pressure spray pipe communicates with the bottom of drill bit, still is equipped with a plurality of shotcrete pipes on the drilling rod, is equipped with a plurality of through-holes on the shotcrete pipe, still is equipped with the sleeve on the shotcrete pipe, and the sleeve cover is on the shotcrete pipe, and the sleeve can plug up the through-hole; 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

Construction equipment based on high-pressure jet grouting pile application

Technical Field

The utility model relates to a construction equipment technical field of high pressure jet grouting pile, concretely relates to construction equipment based on high pressure jet grouting pile uses.

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 in soil by using the existing high-pressure rotary jet pile machine, soil and gravels easily enter a slurry conveying pipe through a nozzle, so that the slurry conveying pipe is blocked, 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 drill rod, the construction efficiency is reduced, and the construction period is delayed; meanwhile, most of concrete piles formed by grouting of the existing drill rods are of cylindrical structures, and the bearing capacity of the cylindrical concrete piles is insufficient in high water content or soft geology, so that the structure of a building is influenced.

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 construction equipment based on high pressure spouts stake is used soon, can avoid the drill bit to block up the shotcrete pipe at the in-process that bores down, improves the efficiency of construction, can increase the bearing capacity who mixes the soil pile simultaneously.

The utility model discloses a following technical scheme realizes:

a construction device based on high-pressure jet grouting pile application 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 blocked by the sleeves; the slurry conveying pipe is sleeved on the water spraying pipe and can move on the water spraying pipe along the direction of the outer wall of the water spraying pipe, a plurality of connecting pipes are arranged on the outer wall of the slurry conveying pipe, one end of each connecting pipe is communicated with the slurry conveying pipe, a connecting block is arranged at the other end of each connecting pipe and can move towards the direction of the outer wall of the cavity, a containing cavity is formed in each connecting block and is communicated with the containing cavity, an outlet matched with the slurry spraying pipe is formed in each connecting block, the containing cavity is communicated with the outlet, the diameter of each sleeve is larger than that of the outlet, a baffle capable of blocking the outlet is arranged in each containing cavity, and the slurry spraying pipe can push the baffle to move towards the direction; the drilling rod is further provided with drilling blades, the number of the drilling blades is the same as that of the connecting blocks, the drilling blades penetrate into the cavity and are located above the guniting pipe, the cross section area of the tail end, located in the cavity, of each drilling blade is larger than that of the outlet, and when the connecting blocks move to the same height as the drilling blades, the connecting blocks can enable the drilling blades to move towards the direction far away from the central axis of the drilling rod.

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 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.

Furthermore, the inner wall of the cavity is also provided with second grooves the number of which is the same as that of the drill leaves, the drill leaves are inserted into the second grooves, and the section width of each second groove is smaller than that of each connecting block.

Further, the drill blade comprises a blade rod and a blade end, the blade rod penetrates through the second groove to be connected with the blade end, the diameter of the blade rod is smaller than that of the blade end, and the diameter of the blade end is larger than that of the outlet.

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

1. the utility model relates to a construction equipment based on high pressure jet grouting pile uses, when the drill bit drives the drilling rod and is carrying out the drilling operation to soil, move the connecting block on the defeated thick liquid pipe to the same height with boring the leaf, towards defeated thick liquid intraductal transport high pressure water medium, high pressure water medium forces the connecting block to move towards boring the leaf direction, will bore the leaf and move to the drilling rod outside finally, thereby enlarged the slip casting hole that the drilling rod went down and formed, and then increased the diameter of muddy earth stake, thereby improved the bearing capacity of muddy earth stake;

2. the utility model relates to a construction equipment based on high pressure jet grouting pile uses, when the drill bit accomplishes the depth of boring down and carries out the slip casting, when carrying the grout in the thick liquid conveying pipe, the grout enters into the chamber that holds of connecting block through the connecting pipe, forces the connecting block to move towards the shotcrete pipe direction, and then makes the shotcrete pipe insert in the export, and promote the baffle and move, thereby make the through-hole on the shotcrete pipe communicate with holding the chamber, make the grout that holds the intracavity flow into the shotcrete pipe through the through-hole, finally the cement flows out through the shotcrete pipe, carry out the slip casting operation to the hole that the drill bit bored;

3. the utility model relates to a construction equipment based on high pressure jet grouting pile is used, because the drill bit drives the drilling rod at the in-process that bores down, utilize the sleeve on the shotcrete pipe to plug up the shotcrete pipe to make the in-process that the drill bit bored down, it is intraductal that impurity such as earth, grit that get into to the shotcrete can't get into to defeated thick liquid, thereby has effectively avoided the condition that impurity blockked up defeated thick liquid pipe to take place, has improved the efficiency of construction.

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 a schematic view of another state structure of the present invention during grouting;

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

FIG. 5 is an enlarged view of the part B of the present invention;

FIG. 6 is a schematic structural view of the guniting pipe of the present invention;

fig. 7 is a schematic structural view of the drill blade 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, 14-containing cavity, 15-fourth elastic part, 16-sleeve, 17-through hole, 18-first groove, 19-drill blade, 20-second groove, 21-blade rod and 22-blade end.

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 to 7, the utility model relates to a construction equipment based on high-pressure jet grouting pile application, including drilling rod 4 and drill bit 1 arranged at the bottom of drilling rod 4, the inside of drilling rod 4 is provided with cavity 6, high-pressure spray pipe 2 is arranged in cavity 6, and high-pressure spray pipe 2 is communicated with the bottom of drill bit 1, and high-pressure spray pipe 2 is arranged to convey high-pressure water to drill bit 1, destroy the soil body, make drill bit 1 easily carry out drilling operation to the soil; the outer wall of the periphery of the drill rod 4 is provided with a gear, the gear is close to the top end of the drill rod 4, and the gear can be meshed with an output shaft of the motor, so that the drill rod 4 can rotate by the motor.

The cavity 6 is also internally provided with a pulp conveying pipe 3, the diameter of the pulp conveying pipe 3 is larger than that of the water spray pipe 2, the pulp conveying pipe 3 is sleeved on the water spray pipe 2, the bottom end of the pulp conveying pipe 3 is of a closed structure, the pulp conveying pipe 3 can move on the water spray pipe 2 along the direction of the outer wall of the water spray pipe 2, and a sealing ring is arranged at the joint between the pulp conveying pipe 3 and the water spray pipe 2 to ensure the air tightness between the pulp conveying pipe 3 and the water spray pipe 2; the slurry conveying pipe 3 is connected with an external hydraulic cylinder, the slurry conveying pipe 3 can move on the water spraying pipe 2 by the aid of the hydraulic cylinder, the slurry conveying pipe 3 is further connected with an external bidirectional water pump and a cement slurry material pump respectively, the bidirectional water pump can introduce high-pressure water media into the slurry conveying pipe 3 or pump the slurry conveying pipe 3, and the cement slurry material pump can convey cement slurry required for grouting into the slurry conveying pipe 3.

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, the connecting pipes 11 are communicated with the accommodating cavities 14, and therefore cement slurry in the slurry conveying pipe 3 can enter the accommodating cavities 14 of the connecting blocks 5 through the connecting pipes 11; 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 first grooves 18, when the connecting block 5 moves to the same height as the first grooves 18, the connecting block 5 can move into the first grooves 18, 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 first grooves 18 in the cavity 6, the circumferential outer wall of each 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 facing the direction of the connecting block 5, the guniting pipes 7 are further provided with sleeves 16 matched with the guniting pipes 7, the sleeves 16 are sleeved on the guniting pipes 7 and 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 sleeves 16 are further provided with second elastic members 12, one ends of the second elastic members 12 are connected with the sleeves, the other end is communicated with the inner wall of the first groove 18, 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.

The inner wall of the cavity 6 of the drill rod 4 is further provided with second grooves 20, the number of the second grooves 20 is the same as that of the connecting blocks 5, when the connecting blocks 4 on the slurry conveying pipe 3 move to the same height as the second grooves 20, the connecting blocks 5 can move into the second grooves 20, the drill rods 4 are provided with drill blades 19, the number of the drill blades is the same as that of the second grooves 20, each drill blade 19 comprises a blade rod 21 and a blade end 22, the diameter of each blade rod 21 is smaller than that of each blade end 22, the diameter of each blade end 22 is larger than that of the corresponding outlet 8, each blade rod 21 penetrates through the corresponding second groove 20 and is connected with the corresponding blade end 22, each drill blade 19 can move on the drill rod 4 along the horizontal direction, the drill rod 10 extends out of the drill rod 4, and the arranged blade ends 22 are used for limiting the blade rods 21, and the blade rods 21 are prevented.

When the drill bit 1 drives the drill rod 4 to drill down soil, the position of the slurry conveying pipe 3 is adjusted by using a hydraulic cylinder connected with the slurry conveying pipe 3, so that the connecting block 5 and the second groove 20 are at the same height, then external high-pressure water is introduced into the slurry conveying pipe 3, high-pressure medium water enters the accommodating cavity 14 of the connecting block 5 through the connecting pipe 11, the pressure in the accommodating cavity 14 is gradually increased at any time, the connecting block is forced to stretch the fourth elastic part 15, the connecting block 5 moves towards the direction of the drill leaf 19, and the drill leaf 19 is finally pushed to extend out of the drill rod 4, so that the diameter of a hole formed by drilling down the drill rod 4 is increased, the diameter of a cement slurry injection hole is increased, the diameter of a concrete pile is finally increased, the bearing capacity of the concrete pile is increased, the moving distance of the connecting block 5 is controlled by using the pressure generated by the high-pressure medium water, and the extending length of the drill leaf 19 can, therefore, flexible selection can be performed according to actual operation requirements.

Meanwhile, in the process that 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 soil or gravel 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, and the blockage of the slurry conveying pipe 3 is avoided, because the length of the guniting pipe 7 is short and the blockage distance is short, when cement slurry is introduced into the slurry conveying pipe 7, silt in the guniting pipe 7 is easily discharged by impact force generated by the cement slurry, the whole slurry conveying pipe 3 cannot be influenced, and the traditional guniting pipe and the slurry conveying pipe are in a communicated structure, so that the silt 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 to cause the blockage of the slurry conveying pipe, particularly the integral structure of the slurry conveying pipe and the guniting pipe is L-shaped, when some irregular small 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 silt can only enter the grout spraying pipe, and the grout is easy to quickly discharge the silt accumulated in the grout spraying pipe due to the fact that the grout spraying pipe is short in length and is in a straight line section.

When the drill bit finishes drilling soil and grouting operation is required to be performed on a hole which is taken by a brick, a bidirectional pump connected with the slurry conveying pipe 3 is used for discharging pressure in the slurry conveying pipe 3, water in the slurry conveying pipe 3 is pumped out, then the connecting block 5 is moved to be flush with the first groove 18 by using a hydraulic cylinder, then cement slurry is introduced into the slurry conveying pipe 3, the 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, as the diameter of the outlet 8 is smaller than that of the sleeve 16, the connecting block 5 pushes the sleeve 16 to compress the second elastic piece 12, and the slurry spraying pipe 7 with a 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, grouting 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 fourth elastic part 15 pulls 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 construction device based on high-pressure jet grouting pile application 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 through holes (17) can be blocked by the sleeve (16);

the mortar conveying pipe (3) sleeved on the water spraying pipe (2) is further arranged in the cavity (6), the mortar conveying pipe (3) can move on the water spraying pipe (2) along the direction of the outer wall of the water spraying pipe (2), a plurality of connecting pipes (11) are arranged on the outer wall of the mortar conveying pipe (3), one end of each connecting pipe (11) is communicated with the mortar conveying pipe (3), a connecting block (5) is arranged on the other end of each connecting pipe, the connecting block (5) can move towards the direction of the outer wall of the cavity (6), an accommodating cavity (14) is arranged in each connecting block (5), each connecting pipe (11) is communicated with the corresponding accommodating cavity (14), an outlet (8) matched with the corresponding mortar spraying pipe (7) is formed in each connecting block (5), the accommodating cavity (14) is communicated with the corresponding outlet (8), the diameter of each sleeve (16) is larger than that of the corresponding outlet (8), a baffle (9) capable of blocking the corresponding, the guniting pipe (7) can push the baffle (9) to move towards the direction far away from the outlet (8);

drilling blades (19) with the same number as the connecting blocks (5) are further arranged on the drill rod (4), the drilling blades (19) penetrate into the cavity (6), the drilling blades (19) are located above the guniting pipe (7), the cross section area of the tail end of each drilling blade (19) located in the cavity (6) is larger than that of the outlet (8), and when the connecting blocks (5) move to the same height as the drilling blades (19), the connecting blocks (5) can move the drilling blades (19) towards the direction far away from the central axis of the drill rod (4).

2. The construction equipment based on the high-pressure jet grouting pile application is characterized in that a fourth elastic member (15) is further arranged on the connecting pipe (11), the fourth elastic member (15) is sleeved on the connecting pipe (11), one end of the fourth elastic member (15) is connected with the connecting block (5), and the other end of the fourth elastic member is connected with the grout conveying pipe (3).

3. The construction equipment based on the high-pressure jet grouting pile application is characterized in that a first elastic piece (10) is further arranged in the accommodating cavity (14) of the connecting block (5), one end of the first elastic piece (10) is connected with the inner wall far away from the outlet (8), and the other end of the first elastic piece (10) is connected with the baffle plate (9).

4. Construction equipment based on high-pressure jet grouting pile application according to claim 1, characterized in that the sleeve (16) is further provided with a second elastic member (12), one end of the second elastic member (12) is connected with the sleeve (16), the other end is connected with the inner wall of the cavity (6), and when the second elastic member (12) is in a non-compressed state, the sleeve (16) can block the through hole (17).

5. The construction equipment based on the high-pressure jet grouting pile application is characterized in that the inner wall of the cavity (6) is also provided with a plurality of second grooves (20) which are the same as the drilling blades (19), the drilling blades (19) are inserted into the second grooves (20), and the cross-sectional width of the second grooves (20) is smaller than that of the connecting blocks (5).

6. Construction equipment based on high pressure jet grouting pile application according to claim 5, characterized in that the drilling blade (19) comprises a blade stem (21) and a blade end (22), the blade stem (21) is connected with the blade end (22) through the second groove (20), the diameter of the blade stem (21) is smaller than the diameter of the blade end (22), and the diameter of the blade end (22) is larger than the diameter of the outlet (8).