CN-224214173-U - Reinforced shield tail brush capable of injecting grease and monitoring abrasion

CN224214173UCN 224214173 UCN224214173 UCN 224214173UCN-224214173-U

Abstract

The utility model provides a reinforced shield machine tail brush capable of injecting grease and monitoring abrasion. The shield tail brush comprises a plurality of shield tail brush bodies which are arranged in an annular structure, wherein each shield tail brush body comprises a first shield tail brush capable of detecting and injecting grease, a second shield tail brush capable of injecting grease and a shield tail brush of a common shield tail brush, the annular shield tail brush is formed by the three shield tail brush bodies of the different types, the first shield tail brush is arranged in the annular shield tail brush at intervals of 5-7 shield tail brush bodies, the first shield tail brush, the second shield tail brush and the common shield tail brush are of steel wire brush structures, grease injection parts are respectively arranged on the first shield tail brush and the second shield tail brush, and the first shield tail brush is further provided with a wear detection strip and a detection interface. According to the utility model, the brush body capable of injecting grease covers the area easy to leak slurry and the position with larger grouting pressure, and the problems of slurry leakage and shield tail brush abrasion in the area can be reduced by increasing the injection amount of the grease.

Inventors

LIU ZHENDONG
ZHOU XUEQIAN
TANG ZHEN
HU ZHONG
XIA GUOSONG
XU ZONGHUI
ZHANG KUNFENG
ZHOU SHUQING
SUN XUN
SHI BINGBING
XU JIAN
WANG YONGGANG

Assignees

中铁十一局集团有限公司
中铁十一局集团城市轨道工程有限公司
中铁十一局武汉重型装备有限公司

Dates

Publication Date: 20260508
Application Date: 20250623

Claims (7)

1. The reinforced shield tail brush capable of injecting grease and monitoring abrasion comprises a plurality of shield tail brush bodies which are arranged in an annular structure, and is characterized in that each shield tail brush body comprises a first shield tail brush (1) capable of detecting and injecting grease, a second shield tail brush (2) capable of injecting grease and a common shield tail brush (3), three different types of shield tail brush bodies form an annular shield tail brush through the three different types of shield tail brush bodies, and one first shield tail brush (1) is arranged among 5-7 shield tail brush bodies in the annular shield tail brush; The novel steel wire brush comprises a first shield tail brush (1), a second shield tail brush (2) and a common shield tail brush (3), and is characterized in that the first shield tail brush (1), the second shield tail brush (2) and the common shield tail brush (3) are of a steel wire brush structure, the steel wire brush comprises a front side protection steel plate (101), a rear side protection steel plate (102) and a steel wire brush (103) arranged between the front side protection steel plate and the rear side protection steel plate, one side of the steel wire brush (103) is covered and welded into a whole through the front side protection steel plate (101) and the rear side protection steel plate (102), an installation bolt (105) is arranged in a covered welding area of the steel wire brush, two protection steel plates extend out of the other side of the steel wire brush (103) to form a sealing brush surface, the first shield tail brush (1) and the second shield tail brush (2) are respectively provided with a grease injection part (104), the grease injection part (104) is arranged on one side of the first shield tail brush (1) and the second shield tail brush (2) away from the sealing brush surface, the first shield tail brush (1) is further provided with a wear detection strip (106), and the wear detection strip (106) is fixed in the sealing surface of the steel wire brush (103) and the sealing surface of the first shield tail brush (1) and the other side is provided with a wear detection interface (109).
2. The reinforced shield tail brush capable of injecting grease and monitoring abrasion according to claim 1 is characterized in that the shield tail brush is divided into four areas according to 12-3 points, 3-6 points, 6-9 points and 9-12 points in a ring shape, and each area is provided with 2-3 pieces of first shield tail brushes (1).
3. The reinforced shield tail brush capable of injecting grease and monitoring abrasion according to claim 1 or 2 is characterized in that the second shield tail brush (2) is distributed in the range of 10 degrees above and below a shield tail grouting pipe area and in the range of 30 degrees above and below each of 3 points, 6 points, 9 points and 12 points, and the rest positions adopt the common shield tail brush (3).
4. The reinforced shield machine tail brush capable of injecting grease and monitoring abrasion according to claim 1 or 2, wherein the first shield tail brush (1), the second shield tail brush (2) and the common shield tail brush (3) are respectively provided with an intermediate protection steel plate (107), the intermediate protection steel plates (107) are inserted between the steel wire brushes (103) and are parallel to the front protection steel plates (101), the size of the intermediate protection steel plates (107) is matched with that of the front protection steel plates (101), and the front protection steel plates (101), the rear protection steel plates (102), the steel wire brushes (103) and the intermediate protection steel plates (107) are welded into a whole, and the welding areas of the intermediate protection steel plates are provided with 2-4 mounting bolts (105).
5. The reinforced shield machine tail brush capable of injecting grease and monitoring abrasion according to claim 1 or 2, wherein the first shield tail brush (1), the second shield tail brush (2) and the common shield tail brush (3) are provided with bearing plates (108) on two sides of a region where the shield tail brush body is provided with mounting bolts (105), two bearing plates (108) on the same shield tail brush body are welded on the side face of the front side protection steel plate (101) and the other one is welded on the side face of the rear side protection steel plate (102), and in the splicing process, two adjacent bearing plates (108) of two adjacent shield tail brush bodies are mutually overlapped.
6. The reinforced shield tail brush capable of injecting grease and monitoring abrasion according to claim 1 or 2, wherein the abrasion detection strip (106) is a U-shaped wire, the closed end of the U-shaped wire is close to the sealed brush surface end of the steel wire brush (103), and two openings extend to the mounting end of the steel wire brush (103) and are connected with two detection heads arranged at the detection interface (109).
7. The reinforced shield tunneling machine tail brush capable of injecting grease and monitoring abrasion according to claim 6 is characterized in that 2-4U-shaped wires with different lengths are arranged on an abrasion detection strip (106) at the same position, the distances between the sealing ends of the 2-4U-shaped wires with different lengths and the brush hair ends of the steel wire brush (103) are different, detection heads matched with the number of the U-shaped wires are arranged at the detection interface (109), and two corresponding detection heads at two ends of each U-shaped wire are connected.

Description

Reinforced shield tail brush capable of injecting grease and monitoring abrasion Technical Field The utility model belongs to a shield sealing component, and particularly relates to a reinforced shield tail brush capable of injecting grease and monitoring abrasion. Background The shield tail brush is an important component in a shield machine sealing system, and is mainly used for sealing a gap between the shield tail and a tunnel segment, preventing groundwater, sediment and the like from rushing into the tunnel, and simultaneously keeping the stability of an excavation surface. The existing shield tail brush is a conventional tail brush and consists of a protective plate and a compacting plate which are made of steel plates, wherein a steel wire brush made of stainless steel materials is clamped between the protective plate and the compacting plate, the protective plate and the compacting plate are fixed on a base plate of the shield tail through pins to form a whole shield tail brush ‌, the steel wire brush adopts martensitic stainless steel wires with the diameter of 0.35mm, and the steel wire brush is processed by a special bending process and is irregularly bent at 360 degrees to meet the coating amount of sealing grease, so that the sealing effect is achieved. The function of automatic viscous grease filling is arranged in the existing shield tail brush structure, the filling space is required to be filled with viscous grease before tunneling so as to prevent water, slurry and the like at the back of the segment ring from entering the shield body, but the grease originally filled in the shield tail brush can not meet the sealing requirement in the actual use process, the tail brush is damaged often because of poor gap of the shield tail or the problem of leakage of the shield tail, if the grease is not timely increased or the shield tail brush is replaced, the phenomena of steel wire abrasion, steel plate breakage or tail brush hardening and the like can occur, the shield tail brush loses elasticity and sealing performance, and thus the sealing effect is lost. Moreover, the existing shield tail brush also lacks a wear detection function, and the wear condition of the shield tail brush steel wire in the shield process cannot be known in time and can be treated in time. Disclosure of Invention Aiming at the defects of the prior art, the utility model provides the reinforced tail brush capable of injecting grease and monitoring abrasion, the annular gap between the shield machine shell and the pipe piece is effectively filled through the combined action of the tail brush and the tail grease injection system, so that the external water and soil infiltration is prevented, meanwhile, the friction between the pipe piece and the tail can be reduced through injecting grease, the pipe piece is prevented from being damaged due to friction or extrusion in the assembling process, and the smooth shield propulsion is ensured. In order to solve the technical problems, the utility model provides a reinforced shield tail brush capable of injecting grease and monitoring abrasion, which comprises a plurality of shield tail brush bodies arranged in an annular structure, wherein each shield tail brush body comprises three different types of shield tail brush bodies, namely a first shield tail brush capable of detecting and injecting grease, a second shield tail brush capable of injecting grease and a common shield tail brush, the annular shield tail brush is formed by the three different types of shield tail brush bodies, and one first shield tail brush is arranged among 5-7 shield tail brush bodies in the annular shield tail brush; The first shield tail brush, the second shield tail brush and the ordinary shield tail brush are steel wire brush structures, including front side protection steel sheet, rear side protection steel sheet and the steel wire brush of arranging in between the front and rear side protection steel sheet, one side of steel wire brush is through front side protection steel sheet and rear side protection steel sheet cladding and welding, is equipped with the installing bolt in its cladding welding area, and two protection steel sheets are stretched out to the opposite side of steel wire brush and are formed sealed brush face, first shield tail brush and second shield tail brush all are equipped with grease injection part, grease injection part sets up in one side that sealed brush face was kept away from to first shield tail brush and second shield tail brush, first shield tail brush still is equipped with wearing and tearing detection strip, wearing and tearing detection strip is fixed in the sealed brush face of steel wire brush to one side that sealed brush face was kept away from to first shield tail brush is equipped with the detection interface. According to the preferable technical scheme, the shield tail brush is divided into four areas according to 12-3 points, 3-6 points, 6-9 points and 9-12