CN217153410U

CN217153410U - Rotary grouting joint

Info

Publication number: CN217153410U
Application number: CN202122786642.7U
Authority: CN
Inventors: 吴夏晨; 许磊; 张明翠; 王书国; 王金华; 张骞; 耿坤; 周旭峰
Original assignee: Shanghai Guangda Foundation Engineering Co ltd
Current assignee: Shanghai Guangda Foundation Engineering Co ltd
Priority date: 2021-11-15
Filing date: 2021-11-15
Publication date: 2022-08-09
Anticipated expiration: 2031-11-15

Abstract

A rotary grouting joint comprises a rotary shell comprising a lower flange, a plurality of oil storage grooves positioned on the inner wall, a plurality of sealing grooves, a plurality of lower sealing grooves and an upper hole shoulder, a shell cover, an inner pipe comprising an end flange and a middle ring groove, an inner lining ring, an outer lining ring, a plurality of oil nozzles and a plurality of plugs; the upper part of the inner pipe is fixedly provided with an external grouting pipeline; an output shaft of the rotary shell and the external reduction gearbox; the oil storage tank is filled with lubricating grease; the sealing grooves are arranged among the oil storage grooves at intervals, and framework oil seals are arranged in the sealing grooves; an O-shaped ring is arranged in the lower sealing groove; the oil storage tanks are respectively provided with two oil filling channels, and the end parts of the oil filling channels are respectively provided with an oil nozzle and a plug; the inner pipe penetrates through the rotary shell, a check ring for a shaft is arranged on an annular groove in the middle of the inner pipe and then is arranged in an upper hole shoulder of the rotary shell, and an upper bearing, an inner lining ring, an outer lining ring, a lower bearing and a shell cover are sequentially arranged. The utility model discloses the sealing performance of slip casting in-process is guaranteed to gyration slip casting joint, ensures that its operation is stable, reliable to effectively prolong the life that gyration slip casting connects.

Description

Rotary grouting joint

Technical Field

The utility model relates to a stirring stake rig construction field specifically is a gyration slip casting connects.

Background

In the construction of deep foundation pit excavation of urban high-rise buildings and subway stations, and the construction of impervious walls of river dams and dams, etc., a large number of construction methods of multi-shaft continuous wall mixing piles and deep mixing piles are adopted, cement slurry with a certain proportion is required to be injected in the process of drilling and mixing by a mixing pile drilling machine for in-situ soil mixing, and cement slurry is injected into the stratum or gaps of buildings to be cemented and hardened into a whole in the process of drilling by a drill rod and a drilling tool thereof, so that the engineering purposes of consolidation, reinforcement and seepage prevention are achieved. In the prior art, a grouting pipeline is arranged on an output main shaft of a top drive power head of a drilling machine through a rotary joint, a grouting pipe is driven to rotate through rotation of the output main shaft, grout is injected into a required position of a poured stratum through an inner cavity of the output main shaft, and the grout overflows from the rotary joint due to eccentric movement and sealing failure of the grouting pipe in the rotary process, so that the grouting pipe is seriously abraded, and the construction efficiency is influenced. Therefore, it is necessary to improve the existing rotary grouting system to improve the sealing performance of the grouting pipe and prevent the slurry from overflowing.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at overcomes the shortcoming that current rotary joint exists, provides a rational in infrastructure, sealed reliable and the steady gyration slip casting of gyration and connects, reduces the gyration pipe inner wall wearing and tearing condition, guarantees the sealing performance of thick liquid slip casting in-process, ensures its operation reliable and stable, extension gyration slip casting connects life.

In order to achieve the above purpose, the utility model adopts the following solution:

a rotary grouting joint comprises a rotary shell, a shell cover, an inner pipe, an inner lining ring, an outer lining ring, a plurality of oil nozzles and a plurality of plugs, wherein the rotary shell comprises a lower flange, a plurality of oil storage tanks positioned on the inner wall, a plurality of sealing grooves, a plurality of lower sealing grooves and an upper hole shoulder;

the method is characterized in that:

the upper part of the inner pipe is fixedly provided with an external grouting pipeline, and a flange at the end part of the inner pipe fixes a grouting pipe joint;

the rotary shell is fixedly mounted with an output shaft of an external reduction gearbox through a flange at the lower part of the rotary shell; the oil storage tank of the rotary shell is arranged below the upper hole shoulder and is filled with lubricating grease; the sealing grooves are arranged among the oil storage grooves at intervals, and framework oil seals are arranged in the sealing grooves; an O-shaped ring is arranged in a lower sealing groove of the rotary shell; each oil storage tank of the rotary shell is provided with two oil injection channels communicated with the outer wall of the rotary shell, the end part of one oil injection channel is provided with an oil nozzle, and the end part of the other oil injection channel is provided with a plug;

the inner pipe is arranged in a mode of penetrating through an inner hole of the rotary shell; and after a shaft check ring is arranged in an annular groove in the middle of the excircle of the inner pipe, the inner pipe is arranged in an upper hole shoulder of the rotary shell, an upper bearing, an inner lining ring, an outer lining ring and a lower bearing are sequentially arranged, and finally the inner pipe is arranged on the rotary shell through a shell cover.

Drawings

Fig. 1 is a schematic structural view of a rotary grouting joint of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a bottom view of FIG. 1;

fig. 4 is a partially enlarged view of portion D of fig. 1.

Detailed Description

The rotary grouting joint of the present invention will be further described with reference to the embodiments shown in fig. 1-4.

A rotary grouting joint comprises a rotary shell 1 comprising a lower flange 11, a plurality of oil storage tanks 12 positioned on the inner wall, a plurality of sealing grooves 13, a plurality of lower sealing grooves 13 'and an upper hole shoulder 14, a shell cover 2, an inner pipe 3 comprising an end flange 31 and a middle annular groove 32, an inner lining ring 4, an outer lining ring 4', a plurality of oil nozzles 7 and a plurality of plugs 8, wherein:

the outer grouting pipeline is fixedly installed on the upper portion of the inner pipe 3, and the end flange 31 of the inner pipe fixes the grouting pipe joint, so that the outer grouting pipeline is prevented from shaking, and normal slurry conveying is guaranteed.

The rotary shell 1 is fixedly mounted with an output shaft of an external reduction gearbox through a lower flange 11 of the rotary shell; after the top driving force head of the external drilling machine is started, the output shaft of the reduction gearbox rotates to drive the rotary shell 1 to rotate together. The oil storage tank 12 of the rotary shell 1 is arranged below the upper hole shoulder 14 and is filled with lubricating grease; the seal grooves 13 are arranged among the oil storage grooves 12 at intervals, and framework oil seals are arranged in the seal grooves; an O-shaped ring is arranged in a lower sealing groove 13' of the rotary shell 1; each oil storage tank 12 of the rotary shell 1 is provided with two oil filling channels 121 communicated with the outer wall of the rotary shell 1, wherein the end of one oil filling channel 121 is provided with an oil nozzle 7, and the end of the other oil filling channel 121 is provided with a plug 8. When lubricating grease is filled into each oil storage groove 12 of the rotary shell 1, each plug 8 on the outer wall of the rotary shell 1 is detached, a grease gun is installed on the grease nipple 7 on the other side, lubricating grease is filled into each oil storage groove 12, and the plugs 8 are screwed to the ends of the oil filling channels 121 until the lubricating grease overflows from the ends of the oil filling channels 121.

The inner pipe 3 is arranged in a mode of penetrating through an inner hole of the rotary shell 1; the outer circle middle part annular groove 32 of the inner pipe 3 is provided with a shaft retainer ring 777 and then is arranged in the upper hole shoulder 14 of the rotary shell 1, the upper bearing 5, the inner lining ring 4, the outer lining ring 4 'and the lower bearing 5' are sequentially arranged, and finally the inner pipe 3 is arranged on the rotary shell 1 through the shell cover 2.

The utility model discloses gyration slip casting connects has rational in infrastructure, sealed reliable and gyration steady gyration slip casting to connect, reduces the gyration pipe inner wall wearing and tearing condition, guarantees the sealing performance of thick liquid slip casting in-process, ensures its operation reliable and stable, extension gyration slip casting connects life.

Claims

1. A rotary grouting joint comprises a rotary shell (1) comprising a lower flange (11), a plurality of oil storage grooves (12) positioned on the inner wall, a plurality of sealing grooves (13), a plurality of lower sealing grooves (13 ') and an upper hole shoulder (14), a shell cover (2), an inner pipe (3) comprising an end flange (31) and a middle ring groove (32), an inner lining ring (4), an outer lining ring (4'), a plurality of oil nozzles (7) and a plurality of plugs (8);

the method is characterized in that:

the upper part of the inner pipe (3) is fixedly provided with an external grouting pipeline, and a flange (31) at the end part of the inner pipe fixes a grouting pipe joint;

the rotary shell (1) is fixedly mounted with an output shaft of an external reduction gearbox through a lower flange (11) of the rotary shell; the oil storage tank (12) of the rotary shell (1) is arranged below the upper hole shoulder (14) and is filled with lubricating grease; the sealing grooves (13) are arranged among the oil storage grooves (12) at intervals, and framework oil seals are arranged in the sealing grooves; an O-shaped ring is arranged in a lower sealing groove (13') of the rotary shell (1); each oil storage tank (12) of the rotary shell (1) is provided with two oil injection channels (121) communicated with the outer wall of the rotary shell (1), wherein an oil nozzle (7) is installed at the end part of one oil injection channel (121), and a plug (8) is installed at the end part of the other oil injection channel (121);

the inner pipe (3) is arranged in a mode of penetrating through an inner hole of the rotary shell (1); the outer circle middle part ring groove (32) of the inner pipe (3) is provided with a shaft check ring (777) and then is arranged in an upper hole shoulder (14) of the rotary shell (1), an upper bearing (5), an inner lining ring (4), an outer lining ring (4 ') and a lower bearing (5') are sequentially arranged, and finally the inner pipe (3) is arranged on the rotary shell (1) through the shell cover (2).