Grouting stopping device for shield tail of shield tunneling machine

Abstract

The utility model relates to a grout stopping device for a shield tail of a shield tunneling machine, and belongs to the technical field of shield tunneling machines. The shield tail comprises a shield tail shell, a shield tail brush and a slurry stopping mechanism. The shield tail shell is provided with at least one shield tail brush arranged in the length direction and used for foundation sealing. The slurry stopping mechanism is additionally arranged, the slurry stopping mechanism comprises a slurry stopping assembly groove formed in the shield tail shell and a plurality of slurry stopping plates fixedly assembled in the slurry stopping assembly groove, and the slurry stopping plates and the shield tail brush are oppositely arranged to form double protection. Meanwhile, the grout stopping plate is of a steel plate bundle structure and is provided with a second grease injection channel, so that the supporting and pressure maintaining capacity is enhanced. In addition, the grout stopping plate is assembled through bolts, can be detached and replaced and is convenient to maintain. The grouting stopping plate can effectively prevent concrete grout from flowing backwards, resists external water and soil pressure, solves the problem that an existing grouting stopping plate is prone to falling off and deforming, and improves efficiency and safety of shield construction.

Description

TECHNICAL FIELD

[0001] The utility model relates to a shield machine technical field especially a kind of for the shield tail of shield machine stop grout device. BACKGROUND

[0002] With the development of city subway construction field technology, shield method construction technology appears, this technology has safety, reliable, fast, environmental protection and other advantages, and is widely applied in the subway construction of each big city, especially applicable to soft soil stratum, hard rock stratum and composite stratum.

[0003] In the related art, in order to effectively control the ground settlement, the shield construction adopts the way of post-wall synchronous grouting to reinforce the shield segment. However, the above-mentioned post-wall synchronous grouting method has obvious problems in hard rock and composite stratum. Because the combination of rock stratum geology with grout is poor, it is easy to cause the grout to flow to the working face through the gap between the excavation section and the shield shell, resulting in loss of grout, affecting the improvement of muck, and thus reducing the construction efficiency. In order to solve this problem, the current method is to weld a grout stop plate at the shield tail to form a water stop ring between the surrounding rock and the shield shell to block the flow of grout to the cutterhead.

[0004] However, the above-mentioned grout stop plate device has the problems of easy falling off and irreversible deformation. The grout stop plate is a spring steel sheet structure with outward bending. When the shield tail enters the surrounding rock, the grout stop plate is easily damaged by impact load, resulting in the formation of a gap on the outside of the grout stop plate, so that the mud can flow into the shield machine, thereby causing the grout stop to fail. INVENTION CONTENTS

[0005] In view of the above-mentioned shortcomings in the prior art, the present application provides a grout stop device for the shield tail of a shield machine, which can effectively block the backflow of concrete grout and also effectively resist external water and soil pressure.

[0006] The technical solution adopted by the utility model is as follows: a grout stop device for the shield tail of a shield machine, comprising:

[0007] A shield tail shell is provided with at least one shield tail brush along its length direction;

[0008] A grout stop mechanism is provided on the shield tail shell, which comprises a grout stop assembly groove opened on the shield tail shell, and a plurality of grout stop plates are fixedly assembled in the grout stop assembly groove, and the direction of each grout stop plate is arranged in the opposite direction of the direction of the shield tail brush;

[0009] A first grease injection channel is in communication with the shield tail shell.

[0010] As a further improvement of the above technical solution:

[0011] Preferably, the stop plate is a steel plate bundle structure, and at least one second grease injection channel is arranged in the middle of each steel plate bundle structure.

[0012] Preferably, the second grease injection channel is configured to inject grease, thereby strengthening the support of the steel plate bundle structure, and thereby more effectively improving the pressure maintaining capacity of the steel plate bundle.

[0013] Preferably, the stop plate comprises a first stop plate and a second stop plate fixedly arranged along the length direction of the stop assembly groove.

[0014] Preferably, the first stop plate and the second stop plate are fixed in the stop assembly groove by bolts.

[0015] Preferably, the installation angle of the first stop plate and the second stop plate is matched with the stop plate demand under different geological conditions.

[0016] Preferably, the first grease injection channel extends along the axis direction of the shield tail shell and is in communication with an external grease supply system.

[0017] The beneficial effects of the utility model are as follows:

[0018] The utility model has the advantages of compact structure, by adding the stop plate mechanism on the shield tail shell, fixing and assembling a plurality of stop plates in the stop assembly groove, the stop plates are reversely arranged with the shield tail brush, can form an effective barrier, effectively block the concrete slurry backflow, ensure the smooth progress of the shield construction.

[0019] The utility model also has the following advantages:

[0020] (1) the stop plate of the utility model adopts the steel plate bundle structure, has higher strength and rigidity, can effectively resist the external water and soil pressure, prevent the slurry leakage or stop plate deformation caused by the water and soil pressure effect;

[0021] (2) the stop plate (including the first stop plate and the second stop plate) of the utility model is fixed in the stop assembly groove by bolts, and this detachable design facilitates replacement when the stop plate is damaged or worn, reduces the maintenance cost, improves the reliability and service life of the equipment;

[0022] (3) the shield tail shell is in communication with the first grease injection channel; meanwhile, at least one second grease injection channel is arranged on each steel plate bundle structure, and the support of the steel plate bundle can be strengthened by injecting grease through the second grease injection channel, the pressure maintaining capacity of the steel plate bundle is improved, and the stop plate effect is further enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the whole structure schematic view of the utility model.

[0024] Figure 2 For Figure 1 A enlarged schematic view of part A in Fig.

[0025] Wherein: 1, shield tail shell; 2, shield tail brush; 3, stop paste mechanism; 4, first grease injection channel;

[0026] 301, stop paste assembly groove; 302, first stop paste plate; 303, second stop paste plate. DETAILED DESCRIPTION

[0027] The specific embodiments of the present application will be described below with reference to the accompanying drawings.

[0028] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the specification of the present application herein is only for the purpose of describing specific embodiments and is not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0030] In the case of using "include", "have", and "contain" described herein, unless a clear limiting term is used, such as "only", "consisting of", etc., another component can be added. Unless otherwise mentioned, the singular form of the term can include the plural form and cannot be understood as one in number.

[0031] It should be understood that although the terms "first", "second", etc. can be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, without departing from the scope of the present application, a first element can be referred to as a second element, and similarly, a second element can be referred to as a first element.

[0032] In addition, the drawings are not drawn to scale 1:1, and the relative sizes of the elements are only drawn by example in the drawings, not necessarily according to the true scale.

[0033] As Figures 1-2, the structure state schematic diagram of a shield tail stop grout device for a shield machine in an embodiment of the utility model is shown; for the convenience of description, the drawings only show the structure related to the embodiment of the utility model.

[0034] In the embodiment, a shield tail stop grout device for a shield machine is provided, which comprises:

[0035] The shield tail shell 1 is provided with at least one shield tail brush 2 along the length direction thereof;

[0036] The stop grout mechanism 3 is arranged on the shield tail shell 1, and comprises a stop grout assembly groove 301 formed on the shield tail shell 1, and a plurality of stop grout plates fixedly assembled in the stop grout assembly groove 301, wherein the direction of each stop grout plate is arranged in the opposite direction of the shield tail brush 2;

[0037] The first grease injection channel 4 is communicated with the shield tail shell 1.

[0038] In the embodiment, the stop grout plate is a steel plate bundle structure, and at least one second grease injection channel is arranged in the middle of each steel plate bundle structure.

[0039] Further, the second grease injection channel is configured to inject grease, thereby strengthening the support of the steel plate bundle structure, and more effectively improving the pressure maintaining capacity of the steel plate bundle.

[0040] In the embodiment, the stop grout plate comprises a first stop grout plate 302 and a second stop grout plate 303 fixedly assembled in the length direction of the stop grout assembly groove 301 in sequence.

[0041] Further, the first stop grout plate 302 and the second stop grout plate 303 are fixed in the stop grout assembly groove 301 through bolts.

[0042] Further, the installation angle of the first stop grout plate 302 and the second stop grout plate 303 is matched with the stop grout demand under different geological conditions.

[0043] In the embodiment, the first grease injection channel 4 extends along the axis direction of the shield tail shell 1 and is communicated with an external grease supply system.

[0044] The utility model has the advantages of reasonable structure, by additionally arranging the stop grout mechanism 3 on the shield tail shell 1 and fixedly assembling a plurality of stop grout plates in the stop grout assembly groove 301, the stop grout plates are arranged in the opposite direction of the shield tail brush 2, an effective barrier can be formed, the concrete slurry backflow is effectively blocked, and the smooth progress of the shield construction is ensured.

[0045] Any combination of the technical features in the above-described embodiments can be made, and for the sake of brevity, not all possible combinations are described, however, as long as the combination of the technical features does not exist in contradiction, it shall be considered as the scope of the description.

[0046] The above-described embodiments only express the implementation manners of the present application, and the description is relatively specific and detailed, but it shall not be understood as the limitation of the scope of the present application patent. It should be pointed out that, for the ordinary skilled in the art, under the premise of not departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent shall be subject to the appended claims.

Claims

1. A grout stopping device for a shield tail of a shield machine, characterized in that, The shield tail shell (1) is provided with at least one shield tail brush (2) arranged along the length direction thereof. A slurry stopping mechanism (3) is arranged on the shield tail shell (1), and the slurry stopping mechanism (3) comprises a slurry stopping assembly groove (301) formed on the shield tail shell (1), and a plurality of slurry stopping plates are fixedly arranged in the slurry stopping assembly groove (301), and the direction of each slurry stopping plate is opposite to the direction of the shield tail brush (2). A first grease injection channel (4) is in communication with the shield tail shell (1). Each of the slurry stopping plates is a steel plate bundle structure, and at least one second grease injection channel is arranged in the middle of each steel plate bundle structure.

2. The device of claim 1, wherein The second grease injection channel is configured to inject grease, thereby strengthening the support of the steel plate bundle structure and more effectively improving the pressure maintaining capacity of the steel plate bundle.

3. The device of claim 2, wherein The slurry stopping plates comprise a first slurry stopping plate (302) and a second slurry stopping plate (303) fixedly arranged along the length direction of the slurry stopping assembly groove (301) in sequence.

4. The device of claim 2, wherein The first slurry stopping plate (302) and the second slurry stopping plate (303) are fixedly arranged in the slurry stopping assembly groove (301) by bolts.

5. The device of claim 4, wherein The installation angles of the first slurry stopping plate (302) and the second slurry stopping plate (303) are matched with the slurry stopping requirements under different geological conditions.

6. The device of claim 5, wherein The first grease injection channel (4) extends along the axis direction of the shield tail shell (1) and is in communication with an external grease supply system.

7. The device of claim 1, wherein ​

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