Tunnel boring machine main drive sealing system and tunnel boring machine

Abstract

The present invention relates to the field of sealing technology, and proposes a main drive sealing system for a tunnel boring machine and a tunnel boring machine. The main drive sealing system for the tunnel boring machine comprises: a sealing chamber assembly, arranged between a shield unit and a drive disc unit of the tunnel boring machine, the sealing chamber assembly having an inner ring and an outer ring that are connected to each other, and an annular sealing chamber is formed between the inner ring and the outer ring; a flexible connecting member, arranged between the sealing chamber assembly and the shield unit or the drive disc unit, the flexible connecting member being used to absorb the vibration displacement of the drive disc unit; a slewing support member, arranged on the shield unit or the drive disc unit, the inner ring and the outer ring being connected to the slewing support member so as to be relatively rotatable, so as to reduce the radial vibration of the annular sealing chamber when the inner ring and the outer ring are in a state of relative rotation. The present invention can solve the problem of abnormal wear and leakage caused by excessive vibration of the main drive sealing chamber of the existing tunnel boring machine.

Description

Technical Field

[0001] The present invention relates to the field of sealing technology, and in particular to a tunnel boring machine main drive sealing system and a tunnel boring machine capable of reducing the vibration of a sealing cavity. Background Art

[0002] The main drive seal is a key core component of the tunnel boring machine. Once the main drive seal structure fails, it is very likely to cause damage to other key components of the tunnel boring machine's main drive, resulting in long-term shutdown and maintenance of the entire tunnel boring machine or even scrapping. In addition, it is difficult to replace the seal in the tunnel, and it is extremely difficult and costly to repair or replace the main bearing, which will cause safety hazards and economic losses to the entire tunnel project.

[0003] Currently, the main drive seals for roadheaders primarily utilize lip seals, VD seals, or multi-finger polyurethane + VD seals. These seals are installed on a grease ring and work together with the sealing runner to form a sealed main drive system. As the diameter of the roadheader increases, component machining errors increase. Furthermore, the cutterhead's overturning force during operation increases its runout, leading to significant runout in the main drive seal chamber. This accelerates seal wear and increases the risk of leakage. Therefore, it is crucial to design a sealing structure that can enhance the stability of the seal chamber. Summary of the Invention

[0004] The purpose of the present invention is to provide a main drive sealing system and a roadheader to solve the problem that the main drive sealing chamber of the existing roadheader vibrates too much, resulting in abnormal wear and leakage.

[0005] The above technical objectives of the present invention are mainly achieved through the following technical solutions:

[0006] In one aspect, the present invention provides a main drive sealing system for a roadheader, comprising:

[0007] A sealed cavity assembly is provided between the shield unit and the drive disc unit of the tunnel boring machine, wherein the sealed cavity assembly comprises an inner ring member and an outer ring member which are connected to each other, and an annular sealed cavity is formed between the inner ring member and the outer ring member;

[0008] a flexible connector provided between the sealed cavity assembly and the shield unit or the drive disk unit, the flexible connector being used to absorb the bouncing displacement of the drive disk unit;

[0009] The rotary support is provided on the shield unit or the drive disk unit, and the inner ring and the outer ring are connected to the rotary support so as to be relatively rotatable, so as to reduce the radial runout of the annular sealing chamber when the inner ring and the outer ring are relatively rotating.

[0010] In a preferred embodiment of the present invention, the rotary support member includes an inner support ring and an outer support ring sleeved on the outer circumference of the inner support ring, the outer support ring and the inner support ring are coaxial and rotatable, one end of the inner ring member is connected to the inner support ring, and one end of the outer ring member is connected to the outer support ring.

[0011] In a preferred embodiment of the present invention, the flexible connecting member is connected between the inner ring member and the drive disk unit, and the outer support ring is connected to the shield unit.

[0012] In a preferred embodiment of the present invention, the flexible connecting member is connected between the outer ring member and the shield unit, and the inner support ring is connected to the drive disk unit.

[0013] In a preferred embodiment of the present invention, the flexible connecting member is an elastic tube made of elastic material, and the elastic tube is clamped between the inner ring and the drive disk unit; or, the elastic tube is clamped between the outer ring and the shield unit.

[0014] In a preferred embodiment of the present invention, the flexible connecting member is an elastic ring made of elastic material, the outer edge of the elastic ring is connected to the end face of the inner ring member through a fixing member, and the inner edge of the elastic ring is connected to the end face of the drive disk unit through a fixing member; or the inner edge of the elastic ring is connected to the end face of the outer ring member through a fixing member, and the outer edge of the elastic ring is connected to the end face of the shield unit through a fixing member.

[0015] In a preferred embodiment of the present invention, the rotary support member is a rolling bearing or a sliding bearing, and the rolling bearing or the sliding bearing is arranged at one end of the sealing chamber assembly, and one end of the inner ring of the bearing is connected to the inner ring member, and one end of the outer ring of the bearing is connected to the outer ring member.

[0016] In a preferred embodiment of the present invention, the flexible connector is connected between the sealed chamber assembly and the drive disk unit, and the other end of the outer ring of the bearing is connected to the end face of the shield unit.

[0017] In a preferred embodiment of the present invention, the flexible connector is connected between the sealed chamber assembly and the shield unit, and the inner ring of the bearing is sleeved on the drive disk unit.

[0018] On the other hand, the present invention also provides a roadheader, comprising:

[0019] Shield unit;

[0020] a drive disk unit rotatably disposed in the shield unit via a bearing;

[0021] The main drive sealing system of the tunnel boring machine as described above is provided between the shield unit and the drive disc unit.

[0022] Compared with the prior art, the technical solution of the present invention has the following characteristics and advantages:

[0023] The present invention utilizes a rotary support to directly assemble the inner ring and the outer ring in the sealing chamber assembly. The vibration of the annular sealing chamber is no longer affected by other assembly relationships, but is directly determined by the vibration of the rotary support. The precision of the rotary support is utilized to ensure the stability of the vibration of the annular sealing chamber during equipment operation. At the same time, a flexible connector is added between the sealing chamber assembly and the drive disk unit or the shield unit to isolate the influence of the vibration of the drive disk unit on the annular sealing chamber. The vibration of the drive disk caused by the force on the cutter disk in the drive disk unit is absorbed by the flexible connector and is no longer transmitted to the annular sealing chamber, thereby achieving the stability of the vibration of the annular sealing chamber.

[0024] As described above, the technical solution described in the present invention can solve the problem of excessive vibration of the main drive seal chamber, reduce abnormal wear and damage of the main drive seal, improve the reliability of the main drive system of the tunnel boring machine, reduce the cost of maintenance and replacement of the main drive seal system, and reduce oil leakage loss and engineering losses caused by shutdown. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0026] The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the various components in the drawings are merely illustrative and are used to help understand the present invention, and are not intended to specifically limit the shapes and proportional dimensions of the various components of the present invention. Those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to specific circumstances under the guidance of the present invention.

[0027] Figure 1 This is a schematic diagram of the structure of the main drive lip seal of the tunnel boring machine in the prior art;

[0028] Figure 2 This is a structural diagram of a first embodiment of the main drive sealing system for a roadheader according to the present invention;

[0029] Figure 3This is a schematic structural diagram of a second embodiment of the main drive sealing system for a roadheader according to the present invention;

[0030] Figure 4 for Figure 2 Schematic diagram of the assembly structure of the structure shown.

[0031] Description of reference numerals:

[0032] 10. Shield; 11. Drive plate; 12. Cutter head; 13. Main bearing fixed ring; 14. Main bearing moving ring;

[0033] 20. Inner ring; 21. Outer ring; 22. Annular sealing chamber; 23. Lip seal;

[0034] 30. Flexible connectors;

[0035] 40. Rotary support member; 41. Inner support ring; 42. Outer support ring. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0037] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be an element centered thereon. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0039] like Figure 1As shown, in the prior art, the inner ring 20 (sealing runway) forming the main drive sealing structure is assembled on the drive disc 11, and the outer ring 21 (grease ring) forming the main drive sealing structure is assembled on the shield body 10, and a lip seal 23 is provided in the annular sealing cavity 22 formed between the outer ring 21 and the inner ring 20. On the one hand, since the shield body 10 and drive disc 11 of the tunnel boring machine are usually composed of multiple components, affected by the processing accuracy and assembly errors of each component, the annular sealing cavity 22 formed between the inner ring 20 and the outer ring 21 is usually not a regular circular ring (that is, the coaxiality between the inner ring 20 and the outer ring 21 cannot be effectively guaranteed), which leads to the annular sealing cavity 22 vibrating during the relative rotation of the inner ring 20 and the outer ring 21 (the thickness of the annular sealing cavity 22 in a certain radial direction continues to change); on the other hand, since the inner ring 20 is directly assembled on the shield body 10, and the cutter disc 12 is connected to the shield body 10, during the excavation process, the vibration of the drive disc 11 caused by the force applied to the cutter disc 12 will cause the annular sealing cavity 22 to vibrate.

[0040] The vibration of the annular sealing chamber 22 will affect the service life of the sealing ring in the annular sealing chamber 22. The present invention provides a main drive sealing system for a roadheader that can significantly reduce the vibration of the annular sealing chamber 22. The details are as follows:

[0041] Implementation method one:

[0042] like Figure 2 and Figure 4 As shown, the present invention provides a main drive sealing system for a roadheader, comprising a sealing chamber assembly, a flexible connector 30, and a slewing support 40. The sealing chamber assembly is disposed between the roadheader's shield unit and the drive disc unit. The sealing chamber assembly comprises an inner ring 20 and an outer ring 21 that are nested together, forming an annular sealing chamber 22. The flexible connector 30 is disposed between the sealing chamber assembly and the drive disc unit to absorb the runout displacement of the drive disc unit. The slewing support 40 is disposed on the shield unit. The inner ring 20 and the outer ring 21 are rotatably connected to the slewing support 40. This reduces radial runout of the annular sealing chamber 22 while the inner ring 20 and the outer ring 21 rotate relative to each other, maintaining a substantially unchanged shape.

[0043] A flexible connector 30 is added between the sealing chamber assembly and the drive disc unit to isolate the impact of the vibration of the drive disc unit on the annular sealing chamber 22. The vibration of the drive disc 11 caused by the force applied to the cutter disc 12 in the drive disc unit is absorbed by the flexible connector 30 and is no longer transmitted to the annular sealing chamber 22, thereby achieving the stability of the vibration of the annular sealing chamber 22.

[0044] A rotary support 40 is added between the sealing chamber assembly and the shield unit. The inner ring 20 and the outer ring 21 in the sealing chamber assembly are directly assembled on the rotary support 40. The vibration of the annular sealing chamber 22 is no longer affected by other assembly relationships, but is directly determined by the vibration of the rotary support 40. The precision of the rotary support 40 is used to ensure the stability of the vibration of the annular sealing chamber 22 during equipment operation.

[0045] The following will describe in detail the specific structure of each part of the main drive sealing system of the roadheader in this embodiment, as well as the position and connection relationship between the parts.

[0046] First, a brief description of the shield unit and drive disc unit on the tunnel boring machine is given. Figures 2 to 4 As shown, the shield unit is a shell located circumferentially outside the tunneling head. It is typically composed of multiple annular components. The shield unit includes at least a shield body 10. A drive disc unit is located within the shield unit and includes at least an axially connected drive disc 11 and a cutter disc 12. A main drive bearing is located between the drive disc unit and the shield unit. The main drive bearing includes a main bearing fixed ring 13 and a main bearing movable ring 14, which are rotatable relative to each other. The main bearing fixed ring 13 is fixedly connected to the shield body 10, and the main bearing movable ring 14 is fixedly connected to the drive disc 11, meaning that the drive disc 11 can rotate relative to the shield body 10.

[0047] Further, such as Figure 2 As shown, a sealed chamber assembly is provided between the shield 10 and the drive plate 11. This assembly is used to seal the main drive bearing. The sealed chamber assembly comprises an inner ring 20 and an outer ring 21, which are nested together. An annular sealed chamber 22 is formed between the inner and outer rings 20 and 21, and at least one sealing ring is located within the annular sealed chamber 22. The inner ring 20 is typically a sealing raceway, the outer ring 21 is typically a grease ring, and the sealing ring is typically a lip seal 23.

[0048] The inner ring 20 is sleeved on the circumferential outer side of the drive disc 11. A flexible connector 30 is provided between the drive disc 11 and the inner ring 20 to absorb the bouncing displacement of the drive disc 11. The flexible connector 30 is fixedly connected to the drive disc 11 and the inner ring 20, and is used to connect the inner ring 20 to the drive disc 11 so that the inner ring 20 can rotate with the drive disc 11. The flexible connection between the inner ring 20 and the drive disc 11 can be achieved by a single flexible connector 30 or by multiple flexible connectors 30. The flexible connector 30 is typically made of an elastic material with elasticity, preferably rubber, but other elastic composite materials can also be used.

[0049] In one embodiment, if Figure 2As shown, the flexible connecting member 30 is an elastic tube made of elastic material, which is arranged between the inner ring member 20 and the driving disk 11; specifically, the elastic tube is sleeved on the circumferential outer side of the driving disk 11, and the two can be connected by bonding, welding, etc., and the inner ring member 20 is sleeved on the circumferential outer side of the elastic tube, and the two can be connected by bonding, welding, etc.

[0050] In another embodiment, Figure 4 As shown, the flexible connecting member 30 is an elastic ring made of elastic material, the outer edge of the elastic ring is connected to the end face of the inner ring member 20 by screws, and the inner edge of the elastic ring is connected to the end face of the driving disk 11 by screws; an elastic ring is fixed to the front end face and the rear end face of the inner ring member 20 by screws, thereby improving the stability of the flexible connection between the inner ring member 20 and the driving disk 11.

[0051] Since the inner ring 20 and the driving disk 11 are flexibly connected, when the driving disk 11 is in a stationary state, the inner ring 20 can move relatively easily relative to the driving disk 11, thereby causing the annular sealing chamber 22 to jump. Therefore, it is necessary to further limit the inner ring 20 to avoid the annular sealing chamber 22 from jumping.

[0052] In order to avoid the above problems, Figure 2 As shown, a rotary support 40 is provided at one end of the sealing chamber assembly close to the main drive bearing, and the relatively rotatable inner ring 20 and outer ring 21 are assembled on the rotary support 40 to keep the shape of the annular sealing chamber 22 basically unchanged.

[0053] Specifically, the rotary support member 40 includes an inner support ring 41 and an outer support ring 42 that are coaxially and rotatably sleeved together. One end of the inner ring member 20 is fixedly connected to the inner support ring 41, and the inner support ring 41 can rotate with the inner ring member 20; one end of the outer ring member 21 is fixedly connected to the outer support ring 42, and the outer support ring 42 is connected to the shield body 10 or to the main bearing fixed ring 13 fixed on the shield body 10. The outer ring member 21 and the outer support ring 42 can remain stationary with the shield body 10 (relative to the rotation of the drive disk 11, the shield body 10 remains stationary, that is, stationary).

[0054] In one embodiment, if Figure 2 and Figure 4 As shown, the rotary support member 40 is a rolling bearing, the inner ring of the rolling bearing serves as an inner support ring 41, and the front end face of the inner ring is connected to the rear end face of the inner ring member 20 by screws; the outer ring of the rolling bearing serves as an outer support ring 42, the front end face of the outer ring is connected to the rear end face of the outer ring member 21 by screws, and the rear end face of the outer ring is connected to the front end face of the main bearing fixed ring 13 by screws.

[0055] In another embodiment, the rotary support member 40 is a sliding bearing, the inner ring of the sliding bearing serves as an inner support ring 41, and the front end face of the inner ring is connected to the rear end face of the inner ring member 20 by screws; the outer ring of the sliding bearing serves as an outer support ring 42, the front end face of the outer ring is connected to the rear end face of the outer ring member 21 by screws, and the rear end face of the outer ring is connected to the front end face of the main bearing fixed ring 13 by screws.

[0056] Implementation method 2:

[0057] like Figure 3 As shown, the present invention also provides another main drive sealing system for a roadheader, which includes a sealing chamber assembly, a flexible connector 30, and a slewing support 40. The sealing chamber assembly is disposed between the shield unit and the drive disc unit of the roadheader. The sealing chamber assembly comprises an inner ring 20 and an outer ring 21 that are connected to each other, forming an annular sealing chamber 22 therebetween. The flexible connector 30 is disposed between the sealing chamber assembly and the shield unit and is used to absorb the runout displacement of the drive disc unit. The slewing support 40 is disposed on the drive disc unit. The inner ring 20 and the outer ring 21 are rotatably connected to the slewing support 40 so as to reduce the radial runout of the annular sealing chamber 22 when the inner ring 20 and the outer ring 21 rotate relative to each other, thereby maintaining the shape of the annular sealing chamber 22 substantially unchanged.

[0058] A flexible connector 30 is added between the sealing chamber assembly and the shield unit so that the entire sealing chamber assembly can jump together with the drive disk unit, thereby avoiding the influence of the jumping of the drive disk unit on the annular sealing chamber 22. The jumping of the drive disk 11 and the sealing chamber assembly caused by the force applied to the cutter disk 12 in the drive disk unit is absorbed by the flexible connector 30, and the entire annular sealing chamber 22 jumps together with the drive disk 11, thereby maintaining the stability of the shape of the annular sealing chamber 22.

[0059] A rotary support 40 is added between the sealing chamber assembly and the drive disk unit. The inner ring 20 and the outer ring 21 in the sealing chamber assembly are directly assembled on the rotary support 40. The vibration of the annular sealing chamber 22 is no longer affected by other assembly relationships, but is directly determined by the vibration of the rotary support 40. The precision of the rotary support 40 is used to ensure the stability of the vibration of the annular sealing chamber 22 during equipment operation.

[0060] The following will describe in detail the specific structure of each part of the main drive sealing system of the roadheader in this embodiment, as well as the position and connection relationship between the parts.

[0061] The structures of the drive disc unit and the shield unit have been described above and will not be repeated here.

[0062] The outer ring 21 is disposed on the inner circumferential side of the shield body 10. A flexible connector 30 is provided between the outer ring 21 and the shield body 10 to absorb the bouncing displacement of the drive disc 11. The flexible connector 30 is connected to both the shield body 10 and the outer ring 21, and is used to connect the outer ring 21 to the shield body 10 so that the outer ring 21 can remain stationary along with the shield body 10. The flexible connection between the outer ring 21 and the shield body 10 can be achieved by a single, integral flexible connector 30 or by multiple flexible connectors 30. The flexible connector 30 is typically made of an elastic material with elasticity, preferably rubber, but other elastic composite materials can also be used.

[0063] In one embodiment, if Figure 3 As shown, the flexible connecting member 30 is an elastic tube made of elastic material, which is arranged between the outer ring member 21 and the shield body 10; specifically, the elastic tube is sleeved on the circumferential outer side of the outer ring member 21, and the two can be connected by bonding, welding, etc., and the shield body 10 is sleeved on the circumferential outer side of the elastic tube, and the two can be connected by bonding, welding, etc.

[0064] In another embodiment, the flexible connecting member 30 is an elastic ring made of elastic material, the outer edge of the elastic ring is connected to the end face of the shield body 10 by screws, and the inner edge of the elastic ring is connected to the end face of the outer ring member 21 by screws; an elastic ring is fixed to the front end face and the rear end face of the outer ring member 21 by screws, thereby improving the stability of the flexible connection between the outer ring member 21 and the shield body 10.

[0065] Since the outer ring 21 and the shield body 10 are flexibly connected, when the drive disk 11 and the shield body 10 are in a stationary state, the outer ring 21 can move relatively easily relative to the drive disk 11, thereby causing the annular sealing cavity 22 to vibrate. Therefore, it is necessary to further limit the outer ring 21 to prevent the annular sealing cavity 22 from vibrating.

[0066] In order to avoid the above problems, Figure 3 As shown, a rotary support 40 is provided at one end of the sealing chamber assembly close to the main drive bearing, and the relatively rotatable inner ring 20 and outer ring 21 are assembled on the rotary support 40 to keep the shape of the annular sealing chamber 22 basically unchanged.

[0067] Specifically, the rotary support member 40 includes an inner support ring 41 and an outer support ring 42 that are coaxially and rotatably connected together. One end of the outer ring member 21 is connected to the outer support ring 42, and the outer support ring 42 can remain stationary together with the outer ring member 21; one end of the inner ring member 20 is connected to the inner support ring 41, and the inner support ring 41 is connected to the drive disk 11, and the inner ring member 20 and the inner support ring 41 can rotate together with the drive disk 11.

[0068] In one embodiment, if Figure 3 As shown, the rotary support member 40 is a rolling bearing, the outer ring of the rolling bearing serves as an outer support ring 42, and the front end face of the outer ring is connected to the rear end face of the outer ring member 21 by screws; the inner ring of the rolling bearing serves as an inner support ring 41, and the front end face of the inner ring is connected to the rear end face of the inner ring member 20 by screws, and the inner ring is sleeved on the drive disk 11, and the two are connected and fixed.

[0069] In another embodiment, the rotary support member 40 is a sliding bearing, the outer ring of the sliding bearing serves as an outer support ring 42, and the front end face of the outer ring is connected to the rear end face of the outer ring member 21 by screws; the inner ring of the sliding bearing serves as an inner support ring 41, and the front end face of the inner ring is connected to the rear end face of the inner ring member 20 by screws, and the inner ring is sleeved on the drive disk 11, and the two are connected and fixed.

[0070] Implementation method three:

[0071] The present invention further provides a roadheader, comprising: a shield unit; a drive plate unit rotatably mounted within the shield unit via a bearing; and a roadheader main drive sealing system as described in Embodiment 1 or Embodiment 2, the roadheader main drive sealing system being disposed between the shield unit and the drive plate unit. The technical effects of the roadheader main drive sealing system have been described above and will not be further elaborated here.

[0072] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A main drive sealing system for a roadheader, characterized in that: include: A sealed cavity assembly is provided between a shield unit and a drive disc unit of a tunnel boring machine, wherein the sealed cavity assembly comprises an inner ring member (20) and an outer ring member (21) which are connected to each other, and an annular sealed cavity (22) is formed between the inner ring member (20) and the outer ring member (21); A flexible connecting member (30) is provided between the sealing chamber assembly and the shield unit or the drive disk unit, and the flexible connecting member (30) is used to absorb the bouncing displacement of the drive disk unit; A rotary support member (40) is provided on the shield unit or the drive disk unit, and the inner ring member (20) and the outer ring member (21) are connected to the rotary support member (40) in a relatively rotatable manner so as to reduce the radial runout of the annular sealing chamber (22) when the inner ring member (20) and the outer ring member (21) are in a relatively rotating state.

2. The main drive sealing system of the tunnel boring machine according to claim 1, characterized in that: The rotary support member (40) comprises an inner support ring (41) and an outer support ring (42) sleeved on the outer periphery of the inner support ring (41); the outer support ring (42) and the inner support ring (41) are coaxial and rotatable; one end of the inner ring member (20) is connected to the inner support ring (41), and one end of the outer ring member (21) is connected to the outer support ring (42).

3. The main drive sealing system of the tunnel boring machine according to claim 2, characterized in that: The flexible connecting member (30) is connected between the inner ring member (20) and the drive disk unit, and the outer support ring (42) is connected to the shield unit.

4. The main drive sealing system of the roadheader according to claim 2, characterized in that: The flexible connecting member (30) is connected between the outer ring member (21) and the shield unit, and the inner support ring (41) is connected to the drive disk unit.

5. The main drive sealing system of the roadheader according to claim 1 or 2, characterized in that: The flexible connecting member (30) is an elastic tube made of elastic material; The elastic collet is arranged between the inner ring (20) and the drive disk unit; or, the elastic collet is arranged between the outer ring (21) and the shield unit.

6. The main drive sealing system of the roadheader according to claim 1 or 2, characterized in that: The flexible connecting member (30) is an elastic ring made of elastic material; The outer edge of the elastic ring is connected to the end face of the inner ring (20) via a fixing member, and the inner edge of the elastic ring is connected to the end face of the drive disk unit via a fixing member; or the inner edge of the elastic ring is connected to the end face of the outer ring (21) via a fixing member, and the outer edge of the elastic ring is connected to the end face of the shield unit via a fixing member.

7. The main drive sealing system of a roadheader according to any one of claims 1 to 4, characterized in that: The rotary support member (40) is a rolling bearing or a sliding bearing, and the rolling bearing or the sliding bearing is arranged at one end of the sealing chamber assembly, and one end of the inner ring of the bearing is connected to the inner ring member (20), and one end of the outer ring of the bearing is connected to the outer ring member (21).

8. The main drive sealing system of the roadheader according to claim 7, characterized in that: The flexible connecting piece (30) is connected between the sealed cavity assembly and the drive disk unit, and the other end of the outer ring of the bearing is connected to the end surface of the shield unit.

9. The main drive sealing system of the roadheader according to claim 7, characterized in that: The flexible connecting piece (30) is connected between the sealing chamber assembly and the shield unit, and the inner ring of the bearing is sleeved on the driving disk unit.

10. A roadheader, characterized in that: include: Shield unit; a drive disk unit rotatably disposed in the shield unit via a bearing; The main drive sealing system for a tunnel boring machine according to any one of claims 1 to 9, wherein the main drive sealing system for a tunnel boring machine is arranged between the shield unit and the drive disc unit.

Images