CN211081888U

CN211081888U - Grouting device of advanced small guide pipe

Info

Publication number: CN211081888U
Application number: CN201921948055.XU
Authority: CN
Inventors: 曾成钢; 梅强; 张仕书; 徐重之
Original assignee: Rail Transit Construction Co Ltd of China Construction Eighth Engineering Division Co Ltd
Current assignee: Rail Transit Construction Co Ltd of China Construction Eighth Engineering Division Co Ltd
Priority date: 2019-11-12
Filing date: 2019-11-12
Publication date: 2020-07-24
Anticipated expiration: 2029-11-12

Abstract

The utility model provides a slip casting device of little pipe in advance, include: the mouth protector comprises a bearing plate, wherein the first side of the bearing plate is connected with an inner cylinder and an outer cylinder, the inner cylinder is coaxially arranged in the outer cylinder, a retaining wall groove for embedding a grouting end of the advanced small catheter is formed between the inner cylinder and the outer cylinder, and the bearing plate is provided with an insertion hole communicated with the inner cylinder; the first end of the joint pipe is inserted into the jack, the second end of the joint pipe extends to the second side of the pressure bearing plate, and the joint pipe is obliquely connected with two slurry inlet pipes; and the locking assembly comprises a supporting plate and a pulling piece, the supporting plate is supported between the two slurry inlet pipes, and the pulling piece is detachably pulled and connected with the supporting plate and the pressure bearing plate. The utility model provides a traditional way will advance during little pipe squeezes into the soil layer, when the back stage slip casting, the many and many problems of thick liquid loss of slip casting loss of pressure.

Description

Grouting device of advanced small guide pipe

Technical Field

The utility model relates to a tunnel construction technical field, concretely relates to slip casting device of leading little pipe.

Background

In the construction process of the underground excavation tunnel, after the primary support is completed, backfill grouting is carried out on the back of the primary support in time to fill the back gap and the primary support to form a support system. Part of the underground tunnel needs to be reinforced by a small advanced conduit for geological and risk source reasons.

When a grouting pipe or a leading small guide pipe is driven into the soil layer after primary support of the back, the conventional method is to hammer the grouting pipe or the leading small guide pipe by adopting an artificial hammer, and then the grouting pipe or the leading small guide pipe is driven into the soil layer. The traditional method has low efficiency and safety, and the hammer hammering easily causes the caliber of the orifice position of the grouting pipe or the advanced small guide pipe to be enlarged and deformed. After the deformation to a certain degree, the grouting pipe joint cannot be fixed or fixed unstably with a grouting pipe or a leading small guide pipe, so that grouting pressure loss and slurry loss are caused.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the grouting device for the advanced small guide pipe is provided so as to solve the problems that the advanced small guide pipe is driven into a soil layer in the traditional method, and during later grouting, the grouting pressure loss is large and the grout loss is large.

To achieve the above object, there is provided a leading small duct grouting device, comprising:

The mouth protector comprises a bearing plate, wherein the first side of the bearing plate is connected with an inner cylinder and an outer cylinder, the inner cylinder is coaxially arranged in the outer cylinder, a retaining wall groove for embedding a grouting end of the advanced small catheter is formed between the inner cylinder and the outer cylinder, and the bearing plate is provided with an insertion hole communicated with the inner cylinder;

The first end of the joint pipe is inserted into the jack, the second end of the joint pipe extends to the second side of the pressure bearing plate, and the joint pipe is obliquely connected with two slurry inlet pipes; and

The locking assembly comprises a supporting plate and a pulling piece, wherein the supporting plate is supported between the two slurry inlet pipes, and the pulling piece is detachably pulled on the supporting plate and the pressure bearing plate.

Further, the axis of the joint pipe and the axes of the two slurry inlet pipes are positioned in the same plane.

Furthermore, the two slurry inlet pipes are arranged in a centrosymmetric manner by taking the axis of the joint pipe as the center.

Furthermore, two sides of the supporting plate are respectively provided with a notch, and the pulp inlet pipe is embedded in the notches.

Further, the breach is the arc breach, the radian of arc breach adaptation in advance the radian of thick liquid pipe's pipe wall.

Furthermore, the supporting plate and the bearing plate are respectively provided with a through hole, two ends of the tie piece are respectively arranged in the through holes of the supporting plate and the bearing plate in a penetrating way, two ends of the tie piece are provided with limiting parts, and the limiting parts at the two ends of the tie piece are respectively abutted against the back sides of the supporting plate and the bearing plate.

Furthermore, the pulling piece is a pulling screw rod, the limiting piece is a nut, the nut is screwed at two ends of the pulling screw rod, and the nuts at two ends of the pulling screw rod respectively abut against the back sides of the supporting plate and the bearing plate.

The beneficial effects of the utility model reside in that, the utility model discloses a grout injection device of leading little pipe, inlay the pipe wall of the slip casting end of leading little pipe in locating the dado groove of pipe protector, utilize hammer or pneumatic pick top to advance the bearing plate, squeeze into the soil layer with leading little pipe, the pipe wall indeformable of the slip casting end of leading little pipe can be ensured in the dado groove, and when later stage slip casting, the grafting of jack and the adapter tube of utilizing the bearing plate has reduced the slip casting gap, the loss of the loss that has reduced slip casting pressure and thick liquid. The joint pipe is locked in the jack through the locking assembly, further, the loss of grouting pressure and the loss of grout are reduced, and the grouting construction quality and efficiency of the advanced small guide pipe are improved.

Drawings

Fig. 1 is the utility model discloses the slip casting device of leading little pipe's schematic structure diagram.

3 fig. 3 2 3 is 3 a 3 cross 3- 3 sectional 3 view 3 taken 3 at 3 a 3- 3 a 3 in 3 fig. 3 1 3. 3

Fig. 3 is a schematic structural view of the locking assembly according to the embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a bearing plate according to an embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a supporting plate according to an embodiment of the present invention.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

3 fig. 3 1 3 is 3 the 3 utility 3 model 3 discloses 3 the 3 slip 3 casting 3 device 3' 3 s 3 of 3 leading 3 little 3 pipe 3 structure 3 schematic 3 diagram 3, 3 fig. 3 2 3 are 3 the 3 cross 3- 3 sectional 3 view 3 of 3 A 3- 3 A 3 department 3 in 3 fig. 3 1 3, 3 fig. 3 3 3 is 3 the 3 utility 3 model 3 discloses 3 a 3 lock 3 the 3 structure 3 schematic 3 diagram 3 of 3

subassembly

3, 3 fig. 3 4 3 do 3 the 3 utility 3 model 3 discloses 3 a 3 structure 3 schematic 3 diagram 3, 3 fig. 3 5 3 of 3 bearing 3 plate 3 are 3 the 3 utility 3 model 3 discloses 3 a 3 structure 3 schematic 3 diagram 3 of 3 backup 3 pad 3. 3

Referring to fig. 1 to 5, the utility model provides a grout injection device of advanced ductus venosus, including: a mouth protector 1, a joint pipe 2 and a locking component 3.

The mouth guard 1 includes a pressure bearing plate 13, an inner cylinder 11, and an outer cylinder 12. Specifically, the inner cylinder 11 and the outer cylinder 12 are connected to a first side of the pressure receiving plate 13. The inner cylinder 11 is coaxially disposed within the outer cylinder 12. A retaining wall groove for embedding the grouting end of the leading small conduit 4 is formed between the inner cylinder 11 and the outer cylinder 12. The bearing plate 13 is provided with an insertion hole 131 communicated with the inner cylinder 11.

A first end of the joint pipe 2 is inserted into the insertion hole 131, and a second end of the joint pipe 2 extends to a second side of the pressure bearing plate 13. The joint pipe 2 is obliquely connected with a secondary pulp inlet pipe 21. The two slurry inlet pipes can be respectively filled with slurries with different components. The slurries with different components are mixed by a joint pipe and then injected into the small leading pipe.

The locking assembly 3 includes a support plate 31 and a fastener 32. Specifically, the support plate 31 is supported between the slurry inlet pipes 21. The pulling member 32 is detachably pulled to the support plate 31 and the bearing plate 13.

The utility model discloses a grout injection device of little pipe in advance, during the pipe wall that the slip casting end of little pipe in advance was inlayed and is located the dado groove of hickey, utilized hammer or pneumatic pick top to advance the bearing plate, squeeze into the soil layer with little pipe in advance, the dado groove can ensure that the pipe wall of the slip casting end of little pipe in advance is indeformable, not circle the mouth, explode the pipe.

During later grouting, the insertion holes of the bearing plates are inserted into the connector pipes, the side walls of the outer barrel are provided with pin shaft holes, the first ends of the pin shafts are inserted into the pin shaft holes, the first ends of the pin shafts are fixedly (welded) connected to the outer wall of the small advanced guide pipe, and then plugging pieces (dispensing or welding) are arranged between the pin shaft holes and the pin shafts, so that grouting gaps are reduced, and grouting pressure loss and slurry loss are reduced. The joint pipe is locked in the jack through the locking assembly, further, the loss of grouting pressure and the loss of grout are reduced, and the grouting construction quality and efficiency of the advanced small guide pipe are improved.

In this embodiment, the adapter tube and the mortar inlet tube have a Y-shape. The axis of the joint pipe 2 and the axis of the two slurry inlet pipe 21 are located in the same plane.

In a preferred embodiment, the two slurry inlet pipes 21 are arranged in a central symmetry with the axis of the joint pipe 2 as the center. The joint pipe is more stably locked in the jack of the pressure bearing plate through the locking assembly.

In a preferred embodiment, in order to avoid the problems of the slurry inlet pipe such as shaking or deviation, a notch 311 is formed on each side of the support plate 31, and the slurry inlet pipe 21 is embedded in the notch 311. Further, the notch 311 is an arc-shaped notch, and the radian of the arc-shaped notch is adapted to the radian of the pipe wall of the pulp inlet pipe 21.

In the present embodiment, the supporting plate 31 and the pressure-receiving plate 13 are respectively provided with a through hole a. Both ends of the pulling piece 32 are respectively inserted into the through holes a of the support plate 31 and the bearing plate 13. The stopper 33 is provided at both ends of the fastener 32. The limiting parts 33 at the two ends of the pulling piece 32 respectively abut against the opposite sides of the supporting plate 31 and the bearing plate 13.

In a preferred embodiment, the pulling element 32 is a pulling screw, and the limiting element 33 is a nut. Nuts are screwed at two ends of the drawing screw rod, and the nuts at the two ends of the drawing screw rod respectively abut against the back sides of the supporting plate 31 and the bearing plate 13.

In the present embodiment, the limiting member 33 is a mountain nut.

It should be noted that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the efficacy and the achievable purpose of the present invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.

The present invention has been described in detail with reference to the embodiments shown in the drawings, and those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details of the embodiments should not be construed as limitations of the present invention, which are intended to be limited only by the scope of the appended claims.

Claims

1. A lead ductus grouting apparatus, comprising:

2. The advanced ductus edulis grouting device of claim 1, characterized in that the axis of the joint pipe and the axis of the two slurry inlet pipes are in the same plane.

3. The advanced ductus edulis grouting device according to claim 2, wherein the two slurry inlet pipes are arranged in a central symmetry with the axis of the joint pipe as the center.

4. The apparatus as claimed in claim 1, wherein a notch is formed on each side of the support plate, and the slurry inlet pipe is embedded in the notch.

5. The advancing ductus cornucopiae grouting device according to claim 4, wherein the notch is an arc-shaped notch, and the radian of the arc-shaped notch is matched with the radian of the pipe wall of the grout inlet pipe.

6. The grouting device of an advanced small conduit according to claim 1, wherein the supporting plate and the bearing plate are respectively provided with a through hole, two ends of the tie member are respectively inserted into the through holes of the supporting plate and the bearing plate, two ends of the tie member are provided with a limiting member, and the limiting members at two ends of the tie member respectively abut against opposite sides of the supporting plate and the bearing plate.

7. The advanced ductus dolichos grouting device according to claim 6, wherein the tie member is a tie screw, the position limiting member is a nut, the nut is screwed to both ends of the tie screw, and the nuts at both ends of the tie screw respectively abut against the opposite sides of the support plate and the pressure bearing plate.