Shield tail brush structure and shield tail sealing system

Abstract

Compared with the prior art, the utility model discloses a shield tail brush structure which comprises a connector seat and a brush head, the pressing plate is arranged on the joint seat; the spring plate structure is mounted in the middle of the pressing plate; the steel wire mesh structure is arranged in the spring plate structure; the steel wire cloth bundle structure is arranged in the steel wire mesh sheet structure; the flexible wear detection element is mounted in the steel wire cloth bundle structure and communicated with the joint seat, and is connected to an external loop through the flexible wear detection element, and the device is externally connected to a hydraulic pipeline or a power-on circuit; the abrasion condition of the shield tail brush structure can be accurately judged through corresponding physical quantity signals such as pressure signals or current change signals, and meanwhile, the problem of failure of a shield tail sealing system can be effectively prevented. Therefore, compared with the prior art, according to the technical scheme provided by the utility model, the abrasion condition of the shield tail brush structure can be accurately judged, and in addition, the utility model further provides a shield tail sealing system which also has the technical effects.

Description

Technical Field

[0001] The present application relates to the technical field of shield machines, and more specifically, to a shield tail brush structure. The present application also relates to a shield tail sealing system. Background Art

[0002] At present, with the rapid development of tunnel construction technology and theoretical level, and the increasing level of construction mechanization, the number of tunnel engineering projects constructed by shield machines has increased rapidly. A sealing system is installed at the tail of the shield, which is mainly used to isolate external mud and water and grouting slurry. The pressure of mud and water outside the tail of the shield can reach 10Bar, and the sealing effect is critical to the normal operation of the shield machine. If the sealing system fails, mud and water will enter the shield machine, which will cause the shield machine to stop working at the least, and the entire tunnel will be flooded with mud at the worst.

[0003] The shield tail sealing system of the shield machine in the prior art is mainly composed of a slurry stop plate, a shield tail brush structure and sealing grease between the shield tail brush structures. The current method for monitoring the shield tail sealing effect is mainly to monitor the grease pressure in the shield tail grease cavity and the soil pressure or mud water pressure at the shield tail, and it is impossible to accurately judge the wear condition of the shield tail brush structure.

[0004] Therefore, how to provide a shield tail brush structure that can accurately judge the wear condition of the shield tail brush structure compared with the prior art has become a technical problem that needs to be urgently solved by those skilled in the art. Utility Model Content

[0005] In order to solve the above technical problems, the present application provides a shield tail brush structure, which can accurately judge the wear condition of the shield tail brush structure. In addition, the present utility model also provides a shield tail sealing system, which also has the above technical effects.

[0006] The technical solutions provided by this application are as follows:

[0007] The present application provides a shield tail brush structure, comprising: a joint seat; a pressure plate installed on the joint seat; a spring plate structure installed in the middle of the pressure plate; a steel wire mesh structure arranged in the spring plate structure; a steel wire bundle structure arranged in the steel wire mesh structure;

[0008] A flexible wear detection element is installed in the wire bundle structure and communicated with the joint seat.

[0009] Furthermore, in a preferred embodiment of the present invention, the joint seat is specifically a hydraulic oil pipe joint seat; and the flexible wear detection element is specifically a flexible wear detection hydraulic oil pipe.

[0010] Furthermore, in a preferred embodiment of the present invention, the connector seat is specifically a wiring harness connector seat; and the flexible wear detection element is specifically a flexible wear detection resistor.

[0011] Furthermore, in a preferred embodiment of the present invention, the steel wire bundle structure comprises: a stainless steel wire bundle made of part 0.35 martensitic stainless steel wire.

[0012] Furthermore, in a preferred embodiment of the present invention, the steel wire mesh structure comprises: a 40-mesh steel wire mesh, which is arranged around the periphery of the steel wire bundle structure.

[0013] Furthermore, in a preferred embodiment of the utility model, the stainless steel wire bundle includes: stainless steel wire that is bent 360 degrees after a bending process. After the bending process, the stainless steel wire can better adapt to the gap between the shield tail and the pipe segment, ensuring the uniform coating of the sealing grease, thereby achieving a better sealing effect, wherein the stainless steel wire is arranged in a bundle in the shield tail brush structure to form a multi-layer sealing structure, and these bundle structures work together with the shield tail grease when the shield machine is advancing, effectively preventing impurities such as mud, water, sand and soil from leaking into the main body through the shield tail gap, thereby ensuring the normal operation of the shield machine.

[0014] Furthermore, in a preferred embodiment of the present invention, the thickness of the spring plate structure is 0.5-0.7 mm.

[0015] Furthermore, in a preferred embodiment of the present invention, the pressing plate is fixedly mounted on the joint seat via a pin shaft.

[0016] Furthermore, in a preferred embodiment of the present invention, the thickness of the pressing plate is 0.8~1.2㎜.

[0017] In addition, the utility model also provides a shield tail sealing system, which includes the shield tail brush as described above and also has the above technical effects.

[0018] The utility model provides a shield tail brush structure, including: a joint seat; a pressure plate installed on the joint seat; a spring plate structure installed in the middle of the pressure plate; a wire mesh structure arranged in the spring plate structure; a wire bundle structure arranged in the wire mesh structure; a flexible wear detection element installed in the wire bundle structure and connected to the joint seat. In this solution, the flexible wear detection element is connected to an external circuit or device such as an external connection to a hydraulic pipeline or an electric circuit, and the wear condition of the shield tail brush structure can be accurately judged through corresponding physical quantity signals such as pressure signals or current change signals. At the same time, the problem of failure of the shield tail sealing system can be effectively prevented. Therefore, the technical solution provided by the utility model can accurately judge the wear condition of the shield tail brush structure compared with the prior art. In addition, the utility model also provides a shield tail sealing system, which also has the above-mentioned technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of the shield tail brush structure provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of this application.

[0022] It should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0023] It should be understood that the terms "length", "width", "up", "down", "front", "back", "first", "second", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0025] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0026] like Figure 1 As shown, the shield tail brush structure provided by the embodiment of the present application includes: a joint seat 1; a pressure plate 2 installed on the joint seat 1; a spring plate structure 3 installed in the middle of the pressure plate 2; a steel wire mesh structure 4 arranged in the spring plate structure; a steel wire bundle structure 5 arranged in the steel wire mesh structure; and a flexible wear detection element 6 installed in the steel wire bundle structure 5 and connected to the joint seat 1. Compared with the prior art, the technical solution provided by the utility model can accurately judge the wear of the shield tail brush structure. In addition, the utility model also provides a shield tail sealing system, which also has the above technical effects.

[0027] The technical solution of the utility model is described in detail below in conjunction with specific embodiments:

[0028] Specifically, in a specific embodiment of the present utility model, the joint seat 1 is specifically a hydraulic oil pipe joint seat; the flexible wear detection element 6 is specifically a flexible wear detection hydraulic oil pipe.

[0029] Specifically, in a specific embodiment of the present utility model, the connector seat 1 is specifically a wiring harness connector seat 1; the flexible wear detection element 6 is specifically a flexible wear detection resistor.

[0030] Specifically, in a specific embodiment of the present utility model, the steel wire bundle structure 5 includes: a stainless steel wire bundle made of part 0.35 martensitic stainless steel wire.

[0031] Specifically, in a specific embodiment of the present utility model, the steel wire mesh structure 4 includes: a 40-mesh steel wire mesh, which is arranged around the outer periphery of the steel wire bundle structure 5.

[0032] Among them, the steel wire mesh is placed around the steel wire bundle during the manufacturing process of the shield tail brush structure. It can be tightly combined with the steel wire bundle to form a complete sealing system. The steel wire mesh and the stainless steel wire bundle together constitute the sealing part of the shield tail brush structure. The steel wire mesh further strengthens the sealing effect of the stainless steel wire bundle through its fine mesh structure.

[0033] Specifically, in a specific embodiment of the utility model, the stainless steel wire bundle includes: stainless steel wire that is bent 360 degrees after a bending process. After the bending process, the stainless steel wire can better adapt to the gap between the shield tail and the pipe segment, ensuring the uniform coating of the sealing grease, thereby achieving a better sealing effect. The stainless steel wire is arranged in a bundle in the shield tail brush structure to form a multi-layer sealing structure. These bundle structures work together with the shield tail grease when the shield machine is advancing, effectively preventing impurities such as mud, water, sand and soil from leaking into the main body through the shield tail gap, ensuring the normal operation of the shield machine.

[0034] Specifically, in a specific embodiment of the present utility model, the thickness of the spring plate structure 3 is 0.5-0.7 mm.

[0035] The spring plate structure 3 is used to press the steel wire bundle to make it close to the outer wall of the pipe segment. The spring plate structure 3 relies on its elasticity and the elasticity of the stainless steel wire bundle itself to help the steel wire bundle to be in close contact with the outer curved surface of the pipe segment, thereby forming an effective sealing layer.

[0036] Specifically, in a specific embodiment of the present utility model, the pressing plate 2 is fixedly mounted on the joint seat 1 through a pin shaft.

[0037] Specifically, in a specific embodiment of the present invention, the thickness of the pressing plate 2 is 0.8-1.2 mm.

[0038] In addition, the utility model also provides a shield tail sealing system, which includes the shield tail brush as described above and also has the above technical effects.

[0039] To elaborate more specifically, with the rapid development of tunnel construction technology and theoretical level in my country and the increasing level of construction mechanization, the number of tunnel engineering projects constructed by shield machines has increased rapidly. Among them, a sealing system is installed at the shield tail, which is mainly used to isolate external mud and water and grouting slurry. The mud and water pressure outside the shield tail can reach 10Bar, and the sealing effect is critical to the normal operation of the shield machine. If the sealing system fails, mud and water will enter the shield machine, which will cause the shield machine to stop working at the least, and the entire tunnel will be flooded with mud at the worst. At present, the shield tail sealing system of the shield machine is mainly composed of a slurry stop plate, a shield tail brush structure, and sealing grease between the shield tail brush structure. The current method of monitoring the sealing effect of the shield tail is mainly to monitor the grease pressure of the shield tail grease cavity and the earth pressure or mud water pressure of the shield tail, and it is impossible to accurately judge the wear of the shield tail brush structure.

[0040] The technical solution involved in the embodiment of the utility model solves the problem that the shield tail sealing system of the shield cannot accurately judge the wear condition of the shield tail brush structure.

[0041] Among them, the first implementation is a shield tail brush structure with an electrical wear detection device. In this embodiment, the connector seat 1 is specifically a wiring harness connector seat 1; the flexible wear detection element 6 is specifically a flexible wear detection resistor, and its working principle is to connect the flexible wear detection resistor to the live circuit, and the circuit is equipped with a current detector. When the wire bundle and cloth bundle of the shield tail brush structure are worn to a certain extent, the flexible wear detection resistor begins to wear. When the flexible wear detection resistor is worn, its resistance value changes. The more serious the wear of the flexible wear detection resistor, the greater the change in resistance value. The current of the line pipeline connected to it will also change accordingly. At the same time, the current detector detects the current change signal. At this time, we can accurately judge the wear of the shield tail brush structure through the current change signal. By adding a flexible wear detection resistor and a current detector, we can accurately judge the wear of the shield tail brush structure through the current change signal. At the same time, the problem of failure of the shield tail sealing system can be effectively prevented.

[0042] The second implementation is a shield tail brush structure with a hydraulic wear detection device. In this case, the joint seat 1 is specifically a hydraulic oil pipe joint seat; the flexible wear detection element 6 is specifically a flexible wear detection hydraulic oil pipe, and its working principle is to connect the flexible wear detection hydraulic oil pipe to the pressurized hydraulic pipeline, and the pipeline is equipped with a pressure sensor. When the wire bundle and cloth bundle of the shield tail brush structure are worn to a certain extent, the flexible wear detection hydraulic oil pipe begins to wear. When the flexible wear detection hydraulic oil pipe is worn and broken, the hydraulic pipeline connected to it is depressurized, and the pressure sensor senses the signal. At this time, we can accurately judge the wear condition of the shield tail brush structure through the pressure signal. In the embodiment, by adding a flexible wear detection hydraulic oil pipe and a pressure sensor, the wear condition of the shield tail brush structure can be accurately judged through the pressure signal, and at the same time, the problem of failure of the shield tail sealing system can be effectively prevented.

[0043] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A shield tail brush structure, characterized in that: include: Connector seat (1); A pressing plate (2) mounted on the joint seat (1); A spring plate structure (3) mounted in the middle of the pressure plate (2); A steel wire mesh structure (4) arranged inside the spring plate structure; A steel wire bundle structure (5) disposed within the steel wire mesh structure; A flexible wear detection element (6) installed in the steel wire bundle structure (5) and connected to the joint seat (1).

2. The shield tail brush structure according to claim 1, characterized in that: The joint seat (1) is specifically a hydraulic oil pipe joint seat; The flexible wear detection element (6) is specifically a flexible wear detection hydraulic oil pipe.

3. The shield tail brush structure according to claim 1, characterized in that: The connector seat (1) is specifically a wiring harness connector seat (1); The flexible wear detection element (6) is specifically a flexible wear detection resistor.

4. The shield tail brush structure according to claim 2 or 3, characterized in that: The steel wire bundle structure (5) comprises: a stainless steel wire bundle made of part 0.35 martensitic stainless steel wire.

5. The shield tail brush structure according to claim 4, characterized in that: The steel wire mesh structure (4) comprises: a 40-mesh steel wire mesh, which is arranged around the outer periphery of the steel wire bundle structure (5).

6. The shield tail brush structure according to claim 5, characterized in that: The stainless steel wire bundle includes: stainless steel wire that is bent 360 degrees after being processed by a bending process.

7. The shield tail brush structure according to claim 6, characterized in that: The thickness of the spring plate structure (3) is 0.5-0.7 mm.

8. The shield tail brush structure according to claim 7, characterized in that: The pressing plate (2) is fixedly mounted on the joint seat (1) via a pin shaft.

9. The shield tail brush structure according to claim 8, characterized in that: The thickness of the pressing plate (2) is 0.8-1.2 mm.

10. A shield tail sealing system, characterized in that: The shield tail sealing system comprises the shield tail brush structure according to any one of claims 1 to 9.

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