A detachable shield tail brush

Abstract

The utility model relates to shield tail brush technical field, and disclose a detachable shield tail brush, including main part, the top surface of main part is fixed with steel wire brush group, the main part includes the bottom plate, and one end of bottom plate is fixed with the mounting sleeve, the inside of mounting sleeve is provided with the installation groove, the inner wall of installation groove is clamped with the brush holder, and the bottom surface both sides of brush holder are provided with the limiting slot. The utility model through bottom plate and mounting sleeve constitute the base, can through the installation groove and brush holder quick disassembly and assembly of built -in mounting sleeve, its brush holder cooperation limiting slot and guide tooth groove can correspond with the elastic buckling of inverted tooth frame in installation groove, also can cooperate with pull rod and pull, realize both sides positioning plate's synchronous pull, can remove the locking of inverted tooth frame, and the process of disassembly and installation is convenient, to need not to remove the bottom plate of welding to complete the replacement of new group of compression plate and protection plate and steel wire brush group, improve maintenance efficiency and reduce material loss amount.

Description

Technical Field

[0001] This utility model relates to the field of shield tail brush technology, specifically a detachable shield tail brush. Background Technology

[0002] The tail brush is one of the five major sealing devices of a tunnel boring machine (TBM). It is mainly used to block the connection between the TBM and the outside of the tunnel segments, preventing groundwater, silt, and other contaminants from flowing into the tunnel through the annular gap between the TBM's steel shell and the assembled tunnel segments. It is usually composed of multiple wire brush-shaped sealing brushes, which form a sealed chamber. By injecting special tail grease, a dense and flexible sealing barrier is formed. The core function of the tail brush is to form a life safety ring. Through multiple sealing designs and grease filling, it effectively blocks external water and slurry from entering the shield body, ensuring a dry and safe working environment inside the tunnel. Even under harsh conditions such as deep water, high pressure, or segment misalignment, it can still achieve dynamic sealing.

[0003] The existing tail shield brush mainly consists of various wire brushes, steel plates, and a base plate structure. During use, it is welded to the tunnel boring machine. When the tail shield brush contacts the tunnel segments, grease fills the gaps between the wires to form an elastic sealing barrier, which can adapt to the displacement caused by the assembly and correction of the tunnel segments. Moreover, when the tail shield posture is adjusted by the articulated hydraulic cylinder, the multiple sealing brushes and grease layer can dynamically adapt to the angle changes to ensure the sealing effect.

[0004] While the aforementioned existing technologies have significant beneficial effects, they still have shortcomings:

[0005] When the aforementioned tail shield brush is in use, it needs to come into frequent and prolonged contact with the tunnel lining segments. During this contact, the tail shield brush is constantly deformed due to the pressure it experiences. This leads to irreversible deformation and wear on the wire brush, protective plate, and clamping plate of the tail shield brush. Therefore, it needs to be replaced promptly after reaching the required service mileage. However, since the base plate of the tail shield brush is fixed to the tunnel boring machine by welding, disassembly is difficult. Furthermore, after replacing the tail shield brush, the new tail shield brush still needs to be welded again, resulting in low efficiency and high material consumption. Therefore, a detachable tail shield brush is proposed. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a detachable shield tail brush. The base is composed of a base plate and a mounting sleeve. The brush holder can be quickly disassembled and assembled through the mounting groove built into the mounting sleeve. This allows for the replacement of a new set of clamping plates, protective plates, and wire brush sets without removing the welded base plate, thereby improving maintenance efficiency and reducing material consumption.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a detachable shield tail brush, comprising a main body, a wire brush assembly pinned to the top surface of the main body, the main body including a base plate, and an mounting sleeve fixed to one end of the base plate, an mounting groove inside the mounting sleeve, a brush seat engaged in the inner wall of the mounting groove, and limit grooves on both sides of the bottom surface of the brush seat, guide tooth grooves distributed on both sides of the top surface of the brush seat, a pressing plate and a protective plate fixed to the upper and lower ends of the brush seat respectively, and telescopic grooves on both sides of the top surface of the mounting groove, a positioning plate attached to the inner wall of the telescopic groove, and a reverse tooth frame fixed to the bottom surface of the positioning plate, springs embedded on both sides of the top surface of the positioning plate, and a pull rod fixed to the center of the top surface of the positioning plate.

[0008] Preferably, positioning plates are symmetrically fixed at the bottom of both ends of the pull rod, and the positioning plates form an elastic telescopic structure through springs and telescopic grooves.

[0009] Preferably, the inverted tooth frame is arranged sequentially along both sides of the bottom surface of the positioning plate, and the outer dimensions of the inverted tooth frame match the outer dimensions of the inner wall of the guide tooth groove on both sides of the top surface of the brush holder.

[0010] Preferably, the brush holder is slidably engaged with the mounting groove via a limiting groove, and the toothed bracket is elastically engaged with the guide tooth groove on the top surface of the brush holder.

[0011] Preferably, the pull rod forms an elastic telescopic structure with the mounting sleeve via a positioning plate and a spring.

[0012] Preferably, the wire brush assembly includes a wire brush, and the outer wall of the wire brush is fitted with a strap, and a center plate is embedded in the center of the wire brush. The bottom end of the wire brush is fixed with an inner sheath, and pins are provided on both sides of the inner sheath. A brush holder is attached to the outer wall of the inner sheath.

[0013] Preferably, the inner sheath is fixed to the brush seat by pins on both sides, and the wire brush and the bottom end of the center plate are fixedly connected to the inner sheath.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This utility model consists of a base plate and a mounting sleeve to form a base. The mounting sleeve can be quickly disassembled and assembled with the brush holder through the built-in mounting groove. The brush holder, in conjunction with the limiting groove and the guide tooth groove, can be elastically engaged with the inverted tooth frame in the mounting groove. It can also be pulled up with the pull rod to realize the synchronous lifting of the positioning plates on both sides, thereby releasing the locking of the inverted tooth frame. The disassembly and installation process is convenient, so there is no need to remove the welded base plate to complete the replacement of a new set of pressure plates, protective plates and wire brush sets, thereby improving maintenance efficiency and reducing material consumption.

[0016] 2. The wire brush of this shield tail brush is fixed with straps to maintain structural stability, while the central plate embedded in the center enhances the strength of the central structure. Combined with the inner sheath at the end and the pin fixing method, it is easy to disassemble and replace. Depending on the degree of use and damage to the pressure plate and protective plate, it is possible to choose whether to replace only the wire brush part, which can save material consumption.

[0017] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures pointed out in the description, claims, and drawings. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the main body of this utility model;

[0019] Figure 2 This is a side view sectional structural diagram of the main body of this utility model;

[0020] Figure 3 This is a three-dimensional structural diagram of the brush holder of this utility model;

[0021] Figure 4 This is a three-dimensional structural diagram of the wire brush assembly of this utility model.

[0022] In the diagram: 1. Main body; 101. Base plate; 102. Mounting sleeve; 103. Mounting groove; 104. Brush holder; 105. Limiting groove; 106. Guide tooth groove; 107. Pressing plate; 108. Protective plate; 109. Telescopic groove; 110. Positioning plate; 111. Inverted tooth frame; 112. Spring; 113. Pull rod; 2. Wire brush assembly; 201. Wire brush; 202. Strapping; 203. Center plate; 204. Inner sheath; 205. Pin. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4This embodiment of a detachable shield tail brush includes a main body 1, with a wire brush assembly 2 pinned to the top surface of the main body 1. The main body 1 includes a base plate 101, and an mounting sleeve 102 is fixed to one end of the base plate 101. An mounting groove 103 is provided inside the mounting sleeve 102. A brush holder 104 is engaged with the inner wall of the mounting groove 103. Limiting grooves 105 are provided on both sides of the bottom surface of the brush holder 104. Guide tooth grooves 106 are distributed on both sides of the top surface of the brush holder 104. A pressing plate 107 and a protective plate 108 are fixed to the top and bottom of the brush holder 104, respectively. Telescopic grooves 109 are provided on both sides of the top surface of the mounting groove 103. A positioning plate 110 is attached to the inner wall of the telescopic groove 109. A toothed bracket 111 is fixed to the bottom surface of the positioning plate 110. Springs 112 are embedded on both sides of the top surface of the positioning plate 110. A pull rod 113 is fixed to the center of the top surface of the positioning plate 110.

[0025] like Figure 1-4 As shown, the shield tail brush of this utility model is similar in structure to the existing shield tail brush. The main improvement of this utility model is that the base is composed of a base plate 101 and a mounting sleeve 102. The mounting sleeve 102 can be quickly disassembled and assembled with the brush holder 104 through the mounting groove 103 inside. Therefore, the replacement of a new set of clamping plates 107, protective plates 108 and wire brush group 2 can be completed without removing the welded base plate 101, which improves maintenance efficiency and reduces material consumption. In this utility model, the spring 112 Both the wire brush 201 and the shield tail brush are existing technologies. When using this shield tail brush, the bottom surface of the base plate 101 of the shield tail brush can be welded and fixed to the shield machine first. Then, the wire brush assembly 2 and the brush seat 104 fixed at the end are slid into the mounting groove 103 of the mounting sleeve 102 until the guide tooth groove 106 on the top surface of the brush seat 104 is aligned with the inverted tooth frame 111 on the bottom surface of the positioning plate 110. As the spring 112 returns to its original position and fastens the guide tooth groove 106, the quick installation can be completed. When disassembling, simply pull the rod. Pulling up 113 will simultaneously lift both sets of positioning plates 110, unlocking the brush holder 104. The user can then slide the brush holder 104 out of the mounting slot 103 to remove it, allowing for quick removal and replacement of the brush holder 104, pressure plate 107, protective plate 108, and wire brush assembly 2. This shield tail brush uses a base plate 101 and mounting sleeve 102 to form a base, which can be quickly detached from the brush holder 104 via the mounting slot 103 inside the mounting sleeve 102. The brush holder 104, in conjunction with the limiting groove 105 and the guide tooth groove 106, can be elastically engaged with the inverted tooth frame 111 in the mounting groove 103. It can also be pulled up with the pull rod 113 to simultaneously pull up the positioning plates 110 on both sides, thereby releasing the locking of the inverted tooth frame 111. The disassembly and installation process is convenient, so there is no need to remove the welded base plate 101 to complete the replacement of a new set of clamping plates 107, protective plates 108 and wire brush group 2, improving maintenance efficiency and reducing material consumption.

[0026] like Figure 3-4 As shown, the wire brush assembly 2 includes a wire brush 201, with a strap 202 fitted around the outer wall of the wire brush 201. A center plate 203 is embedded in the center of the wire brush 201. An inner sheath 204 is fixed to the bottom end of the wire brush 201, and pins 205 are provided on both sides of the inner sheath 204. A brush holder 104 is attached to the outer wall of the inner sheath 204. During maintenance, the wire brush 201 and the center plate 203 are fixed at the bottom end by the inner sheath 204, and then the pins 205 are used to secure the brush holder. The brush holder 104 is fixed by inserting the inner sheath 204 on both sides, and can then be installed and used. The wire brush 201 itself is fixed by the strap 202 to maintain structural stability, while the central plate 203 embedded in the center enhances the strength of the central structure. With the inner sheath 204 at the end and the pin 205 for fixing, it is easy to remove and replace. Depending on the degree of damage to the pressure plate 107 and the protective plate 108, it is possible to choose whether to replace only the wire brush 201, which can save material consumption.

[0027] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A detachable shield tail brush, comprising a main body (1), characterized in that, The top surface of the main body (1) is fixed with a wire brush assembly (2). The main body (1) includes a base plate (101), and one end of the base plate (101) is fixed with a mounting sleeve (102). The mounting sleeve (102) has an internal mounting groove (103). The inner wall of the mounting groove (103) is fitted with a brush holder (104). The bottom surface of the brush holder (104) has limit grooves (105) on both sides. The top surface of the brush holder (104) has guide tooth grooves (106) distributed on both sides. The brush holder (104) has a pressing plate (107) and a protective plate (108) fixed at the top and bottom respectively. The mounting groove (103) has telescopic grooves (109) on both sides of the top surface. The inner wall of the telescopic groove (109) is fitted with a positioning plate (110). The bottom surface of the positioning plate (110) is fixed with a toothed bracket (111). The top surface of the positioning plate (110) is embedded with springs (112) on both sides. The center of the top surface of the positioning plate (110) is fixed with a pull rod (113).

2. A detachable shield tail brush according to claim 1, characterized in that, The bottom ends of the pull rod (113) are symmetrically fixed with positioning plates (110), and the positioning plates (110) form an elastic telescopic structure with the telescopic groove (109) through the spring (112).

3. A detachable shield tail brush according to claim 1, characterized in that, The inverted tooth frame (111) is arranged sequentially along both sides of the bottom surface of the positioning plate (110), and the outer dimensions of the inverted tooth frame (111) match the outer dimensions of the inner wall of the guide tooth groove (106) on both sides of the top surface of the brush holder (104).

4. A detachable shield tail brush according to claim 1, characterized in that, The brush holder (104) is slidably engaged with the mounting groove (103) through the limiting groove (105), and the toothed bracket (111) is elastically engaged with the guide tooth groove (106) on the top surface of the brush holder (104).

5. A detachable shield tail brush according to claim 1, characterized in that, The pull rod (113) forms an elastic telescopic structure with the mounting sleeve (102) through the positioning plate (110) and the spring (112).

6. A detachable shield tail brush according to claim 1, characterized in that, The wire brush assembly (2) includes a wire brush (201), and a strap (202) is fitted around the outer wall of the wire brush (201). A center plate (203) is embedded in the center of the wire brush (201). An inner sheath (204) is fixed to the bottom end of the wire brush (201), and pins (205) are provided on both sides of the inner sheath (204). A brush holder (104) is attached to the outer wall of the inner sheath (204).

7. A detachable shield tail brush according to claim 6, characterized in that, The inner sheath (204) is fixed to the brush holder (104) by pins (205) on both sides, and the bottom ends of the wire brush (201) and the center plate (203) are fixedly connected to the inner sheath (204).

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