Steel plate type shield tail sealing brush

Abstract

The utility model discloses a steel plate type shield tail sealing brush, relates to the technical field of shield tail sealing brushes, and aims to solve the problems that in the prior art, in the long-time working process of a shield tail sealing brush, due to insufficient elastic recovery, a gap is formed between a shield tail and a duct piece, sealing grease cannot be stably sealed, and durability is poor. A pressing plate is fixedly installed on the lower portion of the inner side of the base, a rear protection plate, a steel wire set and a front protection plate are sequentially arranged between the base and the pressing plate from top to bottom, the rear protection plate, the steel wire set and the front protection plate are all arranged in a bent mode, the rear protection plate comprises an outer rear protection plate and an inner rear protection plate, the outer rear protection plate is arranged to be a layer, and the inner rear protection plate is arranged to be a layer. The inner rear protection plate comprises nine layers, the outer rear protection plate and the inner rear protection plate are spring steel plates, the front protection plate comprises an outer front protection plate and an inner front protection plate, the outer front protection plate comprises one layer, the inner front protection plate comprises six layers, and the outer front protection plate and the inner front protection plate are spring steel plates.

Description

Technical Field

[0001] The utility model relates to the technical field of shield tail sealing brushes, in particular to a steel plate type shield tail sealing brush. Background Art

[0002] The shield tail sealing brush is a mechanical component that plays a key sealing role in shield construction. It is mainly used in shield equipment for tunneling in soft soil layers. The shield tail sealing brush is a mechanical sealing material installed at the tail of the shield machine to form an effective seal between the shield tail shell and the segment of the shield machine. The shield tail sealing brush is used to prevent mud, soil and other impurities from leaking out of the tail of the shield machine, ensuring the environmental hygiene and safety of the construction site, and ensuring the smooth progress of the shield construction.

[0003] For example, the authorized patent with announcement number CN209277878U (a shield tail brush and a shield machine): comprises a bottom plate, a first steel plate and a second steel plate connected to the bottom plate in sequence at an angle, and a steel wire layer arranged between the first steel plate and the second steel plate, wherein the steel wire layer protrudes symmetrically on both sides of the first steel plate and the second steel plate, and can ensure the sealing performance of a large-diameter shield machine during excavation in a long-distance, high-pressure environment;

[0004] Although the above-mentioned prior art is convenient for the shield tail brush to ensure sealing performance, it has insufficient resilience. As a result, during the long-term working process of the shield tail sealing brush, a gap will appear between the shield tail and the pipe segment due to insufficient elastic recovery, resulting in the inability of the sealing grease to seal stably and poor durability. Therefore, the market urgently needs to develop a steel plate shield tail sealing brush to help people solve the existing problems. Utility Model Content

[0005] The utility model aims to provide a steel plate type shield tail sealing brush to solve the problem in the above background technology that during the long-term operation of the shield tail sealing brush, due to insufficient elastic recovery, a gap will appear between the shield tail and the pipe segment, resulting in the inability of the sealing grease to seal stably and poor durability.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a steel plate type shield tail sealing brush comprises a base, a pressure plate is fixedly installed at the lower inner side of the base, a rear protective plate, a steel wire group and a front protective plate are sequentially arranged between the base and the pressure plate from top to bottom, one end of the rear protective plate, the steel wire group and the front protective plate all extend to one side of the base, and the rear protective plate, the steel wire group and the front protective plate are all bent, the rear protective plate comprises an outer rear protective plate and an inner rear protective plate, and the inner rear protective plate is arranged on the inner side of the outer rear protective plate, the outer rear protective plate is arranged as one layer, and the inner rear protective plate is arranged as nine layers, the outer rear protective plate and the inner rear protective plate are both spring steel plates, the front protective plate comprises an outer front protective plate and an inner front protective plate, and the inner front protective plate is arranged on the outer side of the outer front protective plate, the outer front protective plate is arranged as one layer, and the inner front protective plate is arranged as six layers, and the outer front protective plate and the inner front protective plate are both spring steel plates.

[0007] Preferably, a support plate is arranged between the rear protective plate and the front protective plate along the inner side of the base, and the support plate is arranged as a U-shaped plate, a nut groove is arranged inside the base, a welding groove is arranged inside the pressure plate, a bottom plate bolt is arranged inside the nut groove of the base, and the screw end of the bottom plate bolt extends into the inside of the welding groove.

[0008] Preferably, the outer rear protective plate and the inner rear protective plate of the rear protective plate are both provided with bolt hole 1, and the outer front protective plate and the inner front protective plate of the front protective plate are both provided with bolt hole 2.

[0009] Preferably, an extension plate is fixedly installed on one side of the base, a fixed strip is fixedly installed below the extension plate, a plurality of compression springs are arranged below one side of the fixed strip, a spring seat 1 is fixedly installed on one end of the compression spring, and the spring seat 1 is fixedly connected to the fixed strip, a spring seat 2 is fixedly installed on the other end of the compression spring, and a flat plate is fixedly installed below one side of the spring seat 2.

[0010] Preferably, the thickness of the outer rear protective plate of the rear protective plate is 1 mm, and the thickness of the inner rear protective plate of the rear protective plate is 0.6 mm.

[0011] Preferably, the thickness of the outer front protective plate of the front protective plate is 1 mm, and the thickness of the inner front protective plate of the front protective plate is 0.6 mm.

[0012] Preferably, each layer of the inner rear protective plate of the rear protective plate and the inner front protective plate of the front protective plate are arranged in a staggered manner.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model arranges a rear protective plate, a steel wire group and a front protective plate between the base and the pressure plate respectively. Through the combination of the steel plate and the steel wire, the grease adhesion of the steel wire group and the fatigue elasticity of the steel plate are combined to form a more reasonable steel plate type shield tail sealing brush with stronger pressure bearing capacity. The rear protective plate and the front protective plate are both multi-layer steel plates, and spring steel plates are adopted. By arranging the multi-layer spring steel plates, the shield tail sealing brush has a good rebound effect. When in use, it can have good fatigue elastic adhesion to the pipe segment and good grease adhesion effect. Combined with the multi-layer front protective plate, it has good wear resistance and thus good comprehensive sealing performance. It effectively meets the fatigue elastic adhesion of the steel plate in long-distance construction and the effective grease adhesion performance of the steel wire, plays the first effective barrier to external slurry and water, reduces the content of mud and slurry penetrating into the tail oil cavity, and increases the durability of the shield tail sealing brush.

[0015] 2. The utility model arranges bottom plate bolts on the inner side of the base, which facilitates the installation of the wire group during installation and the positioning and placement of the rear protective plate and the front protective plate, thereby improving the convenience of assembling the shield tail sealing brush and increasing practicality.

[0016] 3. The utility model sets an extension plate, and sets a fixed strip plate, a compression spring and a flat plate below the extension plate, so that when the rear protective plate is elastically deformed, the set compression spring can play an auxiliary role and elastically press the rear protective plate, which is beneficial to the rebound stability of the rear protective plate and increases practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of a steel plate type shield tail sealing brush of the utility model;

[0018] Figure 2 It is a cross-sectional view of a steel plate type shield tail sealing brush of the utility model;

[0019] Figure 3 It is an enlarged schematic diagram of the A part of the utility model;

[0020] Figure 4 It is an enlarged schematic diagram of the B part of the utility model;

[0021] Figure 5 It is a partial arrangement schematic diagram of the rear protection plate of the utility model.

[0022] In the figure: 1. base; 101. nut slot; 2. pressure plate; 201. welding slot; 3. steel wire group; 4. rear protection plate; 401. bolt hole one; 5. front protection plate; 501. bolt hole two; 6. support plate; 7. bottom plate bolt; 8. extension plate; 9. fixing strip plate; 10. flat plate; 11. compression spring; 12. spring seat one; 13. spring seat two. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] See also Figure 1-5 The utility model provides an embodiment: a steel plate type shield tail sealing brush, comprising a base 1, a pressure plate 2 is fixedly installed at the lower inner side of the base 1, a rear protective plate 4, a wire group 3 and a front protective plate 5 are arranged in sequence from top to bottom between the base 1 and the pressure plate 2, the steel wires in the wire group 3 are stainless steel wires, one end of the rear protective plate 4, the wire group 3 and the front protective plate 5 all extend to one side of the base 1, and the rear protective plate 4, the wire group 3 and the front protective plate 5 are all bent, the rear protective plate 4 comprises an outer rear protective plate and an inner rear protective plate, and the inner rear protective plate is arranged on the inner side of the outer rear protective plate, the outer rear protective plate is arranged as one layer, and the inner rear protective plate is arranged as nine layers, and the outer rear protective plate and the inner rear protective plate are both spring steel plates, the front protective plate 5 comprises an outer front protective plate and an inner front protective plate, and the inner front protective plate is arranged on the outer side of the outer front protective plate, the outer front protective plate is arranged as one layer, and the inner front protective plate is arranged as six layers, and the outer front protective plate and the inner front protective plate are both spring steel plates.

[0025] When in use, through the combination of steel plates and steel wires, the grease adhesion of the steel wire group and the fatigue elasticity of the steel plates are combined to form a more reasonable steel plate shield tail sealing brush with stronger pressure-bearing capacity, and the rear protection plate 4 and the front protection plate 5 are both multi-layer spring steel plates, so that the shield tail sealing brush has a good rebound effect, and can have good fatigue elastic fit to the pipe segment during use, and has a good grease adhesion effect. Combined with the multi-layer front protection plate, it has good wear resistance, and thus has good comprehensive sealing performance, effectively meeting the fatigue elastic fit of the steel plate for long-distance construction, and meeting the effective grease adhesion performance of the steel wire, playing the first effective barrier to external slurry and water, reducing the content of mud and slurry penetrating into the tail oil cavity, and increasing the durability of the shield tail sealing brush.

[0026] Furthermore, a support plate 6 is arranged between the rear protective plate 4 and the front protective plate 5 along the inner side of the base 1, and the support plate 6 is arranged as a U-shaped plate, so as to facilitate the support between the rear protective plate 4 and the front protective plate 5. A nut groove 101 is arranged inside the base 1, and a welding groove 201 is arranged inside the pressure plate 2. A bottom plate bolt 7 is arranged inside the nut groove 101 of the base 1. The setting of the nut groove 101 facilitates hiding the nut part of the bottom plate bolt 7, and the screw end of the bottom plate bolt 7 extends into the inside of the welding groove 201. The welding groove 201 is a slot hole, which facilitates the welding connection between the bottom plate bolt 7 and the pressure plate 2.

[0027] Furthermore, the outer rear protective plate and the inner rear protective plate of the rear protective plate 4 are both provided with bolt holes 401, and the outer front protective plate and the inner front protective plate of the front protective plate 5 are both provided with bolt holes 501. The provided bolt holes 401 and 501 facilitate the rear protective plate 4 and the front protective plate 5 to be sleeved on the bottom plate bolts 7 when the shield tail sealing brush is assembled.

[0028] Furthermore, an extension plate 8 is fixedly installed on one side of the base 1, a fixed strip plate 9 is fixedly installed below the extension plate 8, a plurality of compression springs 11 are arranged below one side of the fixed strip plate 9, a spring seat 12 is fixedly installed on one end of the compression spring 11, and the spring seat 12 is fixedly connected to the fixed strip plate 9, a spring seat 2 13 is fixedly installed on the other end of the compression spring 11, and a flat plate 10 is fixedly installed below one side of the spring seat 2 13, so that when the rear protective plate 4 is elastically deformed, the provided compression spring 11 can play an auxiliary role, elastically press the rear protective plate 4, which is beneficial to the rebound stability of the rear protective plate.

[0029] Furthermore, the thickness of the outer rear protective plate of the rear protective plate 4 is 1 mm, the thickness of the inner rear protective plate of the rear protective plate 4 is 0.6 mm, the thickness of the outer front protective plate of the front protective plate 5 is 1 mm, and the thickness of the inner front protective plate of the front protective plate 5 is 0.6 mm. Through the multi-layer setting of the rear protective plate 4 and the front protective plate 5, the wear resistance and service life of the shield tail sealing brush are improved, the replacement frequency is reduced, and the construction cost is reduced.

[0030] Furthermore, each layer of the inner rear protective plate of the rear protective plate 4 and the inner front protective plate of the front protective plate 5 are arranged in a staggered manner. Through the staggered arrangement, a structure similar to staggered lamination is formed between the layers of protection plates. This structure can effectively disperse and resist various forces and impacts from the shield excavation process. Each layer of protection plate can share the stress of adjacent layers to a certain extent, avoiding local damage caused by excessive stress at a single point, thereby increasing practicality.

[0031] Working principle: When in use, during the installation and use of the shield tail sealing brush, a rear protective plate 4, a steel wire group 3 and a front protective plate 5 are respectively arranged between the base 1 and the pressure plate 2. Through the combination of the steel plate and the steel wire, the grease adhesion of the steel wire group and the fatigue elasticity of the steel plate are combined to form a more reasonable steel plate type shield tail sealing brush with stronger pressure-bearing capacity. The rear protective plate 4 and the front protective plate 5 are both multi-layer steel plates, and spring steel plates are used. By arranging multi-layer spring steel plates, the shield tail sealing brush has a good rebound effect. When in use, it can have good fatigue elastic adhesion to the pipe segment and good grease adhesion effect. Combined with the multi-layer front protective plate, it has good wear resistance, and then has good comprehensive sealing performance, which effectively meets the fatigue elastic adhesion of the steel plate for long-distance construction, and meets the effective grease adhesion performance of the steel wire, and plays the first effective barrier to external slurry and water, and reduces the content of mud and slurry penetrating into the tail oil cavity.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A steel plate type shield tail sealing brush, comprising a base (1), characterized in that: A pressure plate (2) is fixedly installed below the inner side of the base (1), and a rear protective plate (4), a steel wire group (3) and a front protective plate (5) are arranged in sequence from top to bottom between the base (1) and the pressure plate (2), one end of the rear protective plate (4), the steel wire group (3) and the front protective plate (5) all extend to one side of the base (1), and the rear protective plate (4), the steel wire group (3) and the front protective plate (5) are all bent, the rear protective plate (4) includes an outer rear protective plate and an inner rear protective plate, and the inner rear protective plate is arranged on the inner side of the outer rear protective plate, the outer rear protective plate is arranged as one layer, and the inner rear protective plate is arranged as nine layers, and the outer rear protective plate and the inner rear protective plate are both spring steel plates, the front protective plate (5) includes an outer front protective plate and an inner front protective plate, and the inner front protective plate is arranged on the outer side of the outer front protective plate, the outer front protective plate is arranged as one layer, and the inner front protective plate is arranged as six layers, and the outer front protective plate and the inner front protective plate are both spring steel plates.

2. A steel plate type shield tail sealing brush according to claim 1, characterized in that: A support plate (6) is arranged between the rear protection plate (4) and the front protection plate (5) along the inner side of the base (1), and the support plate (6) is arranged as a U-shaped plate. A nut groove (101) is arranged inside the base (1), and a welding groove (201) is arranged inside the pressure plate (2). A bottom plate bolt (7) is arranged inside the nut groove (101) of the base (1), and the screw end of the bottom plate bolt (7) extends into the inside of the welding groove (201).

3. A steel plate type shield tail sealing brush according to claim 2, characterized in that: The outer rear protective plate and the inner rear protective plate of the rear protective plate (4) are both provided with bolt holes one (401) inside, and the outer front protective plate and the inner front protective plate of the front protective plate (5) are both provided with bolt holes two (501) inside.

4. The steel plate type shield tail sealing brush according to claim 1, characterized in that: An extension plate (8) is fixedly mounted on one side of the base (1), a fixed strip plate (9) is fixedly mounted below the extension plate (8), a plurality of compression springs (11) are arranged below one side of the fixed strip plate (9), a spring seat one (12) is fixedly mounted on one end of the compression spring (11), and the spring seat one (12) is fixedly connected to the fixed strip plate (9), a spring seat two (13) is fixedly mounted on the other end of the compression spring (11), and a flat plate (10) is fixedly mounted below one side of the spring seat two (13).

5. The steel plate type shield tail sealing brush according to claim 1, characterized in that: The thickness of the outer rear protection plate of the rear protection plate (4) is 1 mm, and the thickness of the inner rear protection plate of the rear protection plate (4) is 0.6 mm.

6. The steel plate type shield tail sealing brush according to claim 1, characterized in that: The thickness of the outer front protective plate of the front protective plate (5) is 1 mm, and the thickness of the inner front protective plate of the front protective plate (5) is 0.6 mm.

7. The steel plate type shield tail sealing brush according to claim 1, characterized in that: Each layer of the inner rear protective plate of the rear protective plate (4) and the inner front protective plate of the front protective plate (5) are arranged in a staggered manner.

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