CN210948677U

CN210948677U - Device for changing oil outlet position of built-in shield tail grease pipeline

Info

Publication number: CN210948677U
Application number: CN201922146546.9U
Authority: CN
Inventors: 程佳琛; 李艳辉; 殷刘伟
Original assignee: China Railway 12th Bureau Group Co Ltd; Second Engineering Co Ltd of China Railway 12th Bureau Group Co Ltd
Current assignee: China Railway 12th Bureau Group Co Ltd; Second Engineering Co Ltd of China Railway 12th Bureau Group Co Ltd
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2020-07-07
Anticipated expiration: 2029-12-04

Abstract

The utility model provides a change device of built-in shield tail grease pipeline oil-out position, belongs to tunnel shield construction technical field, can solve current shield tail grease pipeline oil-out position unreasonable, and the intracavity pressure damage of shield tail grease that causes is big, can't form the problem of effective sealed interlayer, including a plurality of guide plates and the side seal board that make oil-out position evenly distributed, the radian phase-match of guide plate and shield tail, the one end of guide plate and the boss of shield tail inner loop line welding shield tail brush are connected, and the tie point is less than the topmost of boss, and the other end is adjacent with shield tail grease export, and the distance between the free end of two adjacent guide plates equals, and the side seal board is connected with the outside of guide plate. Through using the utility model discloses make the sealed grease oil-out position evenly distributed on the shield tail, sealed grease loss of pressure reduces, and sealed grease injection volume reduces, and the sealed effect of shield tail is showing and is improving.

Description

Device for changing oil outlet position of built-in shield tail grease pipeline

Technical Field

The utility model belongs to the technical field of the tunnel shield constructs the construction, concretely relates to change device of built-in shield tail grease pipeline oil-out position.

Background

At present, in the construction of an interval tunnel of an urban subway, the shield method construction is adopted, the shield tail brush and shield tail grease are matched with each other to block the invasion of underground water and synchronous grouting slurry, the airtight environment in a tunnel of the shield method is ensured, but phenomena such as slurry leakage, sand gushing and water burst and the like often occur at the shield tail in actual construction, the synchronous grouting square quantity cannot be ensured, landmark settlement exceeds the standard, water leakage of a segment seam, upward floating of the segment and the like are caused, the problems of unreasonable arrangement positions of shield tail grease pipelines due to multiple reasons, namely, the interval distance between two adjacent shield tail grease injection ports is far, the pressure loss in a shield tail grease cavity is large, an effective sealing interlayer cannot be formed, and finally the shield sealing effect is poor.

Disclosure of Invention

The utility model discloses it is unreasonable to current shield tail grease pipeline oil-out position, and the shield tail grease intracavity pressure damage who causes is big, can't form the problem of effective sealed interlayer, provides a device that changes built-in shield tail grease pipeline oil-out position.

The utility model adopts the following technical scheme:

the utility model provides a change device of built-in shield tail grease pipeline oil-out position, includes a plurality of guide plates and the side seal board that make oil-out position evenly distributed, the radian phase-match of guide plate and shield tail, the one end of guide plate and the boss of shield tail inner loop line welding shield tail brush are connected, and the tie point is less than the topmost of boss, and the other end is adjacent with shield tail grease export, and the distance between the free end of two adjacent guide plates equals, and the side seal board is connected with one side of guide plate.

The guide plate is formed by rolling a steel plate, and the connecting point of the guide plate and the boss is 5mm lower than the topmost end of the boss.

The guide plate and the shield tail brush are respectively positioned on two sides of the boss.

The utility model has the advantages as follows:

the utility model discloses a long steel sheet of welding edge rolling in shield tail intrados sealed grease delivery port department to unilateral welding shrouding, the length of the long steel sheet of edge rolling is according to actual need's sealed grease oil-out position, makes sealed grease oil-out position evenly distributed on the shield tail, and sealed grease loss of pressure reduces, and sealed grease injection volume reduces, and the shield tail seals the effect and is showing and improve, the utility model discloses not only preparation low cost, simple process are swift, easy and simple to handle, improved the efficiency of construction moreover, practiced thrift construction cost.

Drawings

Fig. 1 is a front view of the present invention;

fig. 2 is a schematic rear view of the present invention;

FIG. 3 is a schematic view of the usage state of the present invention;

FIG. 4 is a schematic diagram of an oil outlet arrangement of a conventional shield tail grease pipeline;

wherein: 1-a flow guide plate; 2-side sealing plates; 3-shield tail; 4-boss; 5-tail brush; 6-shield tail grease outlet; 7-a segment; a No. 8-1 shield tail grease outlet; no. 9-2 shield tail grease outlet; no. 10-3 shield tail grease outlet; no. 11-4 shield tail grease outlet; a shield tail grease outlet of No. 12-5; no. 13-6 shield tail oil outlet.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1 and 2, the device for changing the position of the oil outlet of the built-in shield tail grease pipeline comprises a plurality of guide plates 1 and side seal plates 2, wherein the oil outlet positions are uniformly distributed, the radians of the guide plates 1 are matched with those of a shield tail 3, one end of each guide plate 1 is connected with a boss 4 of a shield tail brush 5 welded on an inner circular line of the shield tail 3, a connecting point is lower than the topmost end of each boss 4, the other end of each guide plate is adjacent to a shield tail grease outlet 6, the distance between the free ends of the two adjacent guide plates 1 is equal, and the side seal plates 2 are connected with the outer sides of.

The guide plate 1 is formed by rolling a steel plate, and the connecting point of the guide plate 1 and the boss 4 is 5mm lower than the topmost end of the boss 4.

The guide plate 1 and the shield tail brush 5 are respectively positioned on two sides of the boss 4.

The guide plate 1 is formed by rolling a steel plate of 5cm, one end of the guide plate 1 cannot be higher than a welding boss 4 of a shield tail brush 5 during welding, and the other end of the guide plate is close to a shield tail grease outlet 6 as far as possible.

The guide plate 1 can be formed by welding a plurality of short steel plates, and the length of the guide plate is determined according to the position of a sealing grease outlet of actual needs, so that the positions of the sealing grease outlets are uniformly distributed on the shield tail.

The side seal plate 2 can be determined according to the overlapping shape of the intrados of the guide plate 1 and the shield tail 3.

As shown in fig. 3, through the utility model discloses built-in shield tail grease pipeline oil-out position after the implementation is more reasonable, more even, No. 1 shield tail grease oil-out, No. 2 shield tail grease oil-out, No. 3 shield tail grease oil-out, No. 4 shield tail grease oil-out, No. 5 shield tail grease oil-out, No. 6 shield tail grease oil-out distance are comparatively even, and shield tail grease seal chamber loss of pressure is less, consequently, the utility model discloses can effectively reduce to leak thick liquid, gush sand and gush water phenomenon.

As shown in fig. 4, in the existing shield tail oil pipeline oil outlet arrangement schematic diagram, the original shield tail oil outlet No. 1 and the original shield tail oil outlet No. 6 are closer in position, after shield tail oil is injected, the pressure of a seal cavity is higher, and the shield tail oil consumption is larger; the distance between the original No. 3 shield tail grease outlet and the original No. 4 shield tail grease outlet is long, the shield tail grease injection pressure is low, the pressure of a sealing cavity is high, and the phenomena of slurry leakage, sand gushing and water gushing are caused.

Claims

1. The utility model provides a change device of built-in shield tail grease pipeline oil-out position which characterized in that: including a plurality of guide plate (1) and side seal board (2) that make oil-out position evenly distributed, the radian phase-match of guide plate (1) and shield tail (3), the one end of guide plate (1) is connected with boss (4) of shield tail (3) inner loop welding shield tail brush (5), the tie point is less than the top of boss (4), the other end is adjacent with shield tail grease export (6), the distance between the free end of two adjacent guide plate (1) equals, side seal board (2) is connected with the outside of guide plate (1).

2. The device for changing the position of the oil outlet of the built-in shield tail grease pipeline according to claim 1 is characterized in that: guide plate (1) is formed through the steel sheet edge rolling, and the tie point of guide plate (1) and boss (4) is than 5mm low on the top of boss (4).

3. The device for changing the position of the oil outlet of the built-in shield tail grease pipeline according to claim 1 is characterized in that: the guide plate (1) and the shield tail brush (5) are respectively positioned on two sides of the boss (4).