A shield machine

Abstract

The invention discloses a shield machine, comprising: a middle shield, including a middle shield shell; a middle shield connecting flange, arranged at the front end of the middle shield, the middle shield connecting flange is provided with a first oil cylinder interface with adjustable position; an annular support component, arranged inside the middle shield shell, the annular support component is provided with a plurality of propulsion mechanism mounting parts and a plurality of hinge mechanism mounting parts; a propulsion oil cylinder component, detachably connected between the middle shield shell and the annular support component, can be connected with any propulsion mechanism mounting part, the propulsion oil cylinder component is provided with a second oil cylinder interface; an articulated oil cylinder component, detachably connected between the middle shield shell and the annular support component, can be connected with any hinge mechanism mounting part, and is provided with a third oil cylinder interface; a propulsion oil cylinder, respectively connected with the first oil cylinder interface and the second oil cylinder interface; an articulated oil cylinder, respectively connected with the third oil cylinder interface and the shield tail of the shield machine, the shield tail is provided with an articulated oil cylinder interface with adjustable position. The positions of the propulsion oil cylinder and the articulated oil cylinder are variable, and the scope of modification is large.

Description

Technical Field

[0001] The present invention relates to the technical field of shield equipment, and more specifically, to a shield machine. Background Art

[0002] The overall structure of traditional shield machines is mostly welded rigid structural parts, and the installation position of driving components such as the propulsion system of the same model is fixed, which limits the segment assembly scheme of the shield machine. In addition, the existing shield machine diameter-changing transformation technology is more reflected in the change of the outer diameter of the shield body, and functional components such as the internal propulsion cylinder and articulated cylinder cannot be adjusted accordingly, resulting in a limited scope of transformation of the shield machine and low versatility.

[0003] Therefore, how to provide a shield machine that can change the distribution position of the propulsion cylinder and the articulated cylinder to improve the modification range and versatility of the shield machine is a problem that urgently needs to be solved by technical personnel in this field. Summary of the invention

[0004] In view of this, the present invention aims to propose a shield machine with variable cylinder distribution positions, so as to realize rapid replacement of cylinder distribution positions, improve the modification scope and versatility of the shield machine, and increase the reuse rate of the shield machine.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A shield machine, comprising:

[0007] A middle shield, including a middle shield shell;

[0008] A middle shield connecting flange is arranged at the front end of the middle shield, and the middle shield connecting flange is provided with a first oil cylinder interface with adjustable position;

[0009] An annular support component is arranged inside the middle shield shell, and the annular support component is provided with a plurality of propulsion mechanism mounting parts and a plurality of hinge mechanism mounting parts;

[0010] A propulsion cylinder component is detachably connected between the middle shield shell and the annular support component, and can be connected to any of the propulsion mechanism mounting parts. The propulsion cylinder component is provided with a second cylinder interface;

[0011] An articulated oil cylinder component is detachably connected between the middle shield shell and the annular support component, can be connected to any of the articulated mechanism mounting parts, and is provided with a third oil cylinder interface;

[0012] A propulsion cylinder, connected to the first cylinder interface and the second cylinder interface respectively;

[0013] The articulated oil cylinder is respectively connected to the third oil cylinder interface and the shield tail of the shield machine, wherein the shield tail is provided with an articulated oil cylinder interface with adjustable position.

[0014] Optionally, the propulsion cylinder component includes:

[0015] An inner fixing seat and an outer fixing seat are arranged opposite to each other and connected via a detachable connecting plate to form the second oil cylinder interface;

[0016] An oil cylinder base, detachably connected between the inner fixing seat and the annular supporting component;

[0017] The first pre-welded plate is arranged at a position on the inner side of the middle shield shell corresponding to the outer fixing seat and is detachably connected to the outer fixing seat.

[0018] Optionally, the articulated cylinder component comprises:

[0019] An articulated support, the third oil cylinder interface is arranged on the articulated support, and the position of the articulated support can be adjusted to be connected to any mounting part of the articulated mechanism;

[0020] The second pre-welded plate is arranged at a position on the inner side of the middle shield shell corresponding to the hinge support and is detachably connected to the hinge support.

[0021] Optionally, the articulated support is provided with a grouting pipe interface for installing an advance grouting pipe.

[0022] Optionally, the propulsion cylinder component and the articulation cylinder component are staggered and distributed along the length direction of the middle shield.

[0023] Optionally, it also includes:

[0024] A first diameter expansion plate, used for being detachably mounted between the propulsion cylinder component and the annular support component;

[0025] The second diameter expansion plate is used for being detachably mounted between the articulated cylinder component and the annular support component.

[0026] Optionally, the annular support component is provided with a plurality of mounting holes, and the mounting holes can serve as any one of the propulsion mechanism mounting portion and the hinge mechanism mounting portion.

[0027] Optionally, a detachable front shield shell is provided on the outer periphery of the front shield of the shield machine.

[0028] The shield machine provided by the present invention has a first cylinder interface for installing one end of the propulsion cylinder, and a second cylinder interface for installing the other end of the propulsion cylinder. After the propulsion cylinder is connected to the first cylinder interface and the second cylinder interface respectively, the installation of the propulsion cylinder is realized. The position and distribution of the first cylinder interface and the second cylinder interface determine the position and distribution of the propulsion cylinder. Since the position of the first cylinder interface is adjustable at the middle shield connection flange, the position and layout of the first cylinder interface can be changed by adjusting the position of the first cylinder interface at the middle shield connection flange; and since the propulsion cylinder component is detachably connected between the middle shield shell and the annular support component, the propulsion cylinder component can be connected to any propulsion mechanism installation part. Therefore, the propulsion cylinder component can be connected to the required propulsion mechanism installation part by disassembling the propulsion cylinder component, so as to achieve the purpose of adjusting the position and distribution of the propulsion cylinder component. The second cylinder interface is arranged at the propulsion cylinder component, that is, the position and distribution of the second cylinder interface can be adjusted.

[0029] Similarly, the middle shield and the shield tail are connected by an articulated cylinder, one end of the articulated cylinder is installed on the third cylinder interface, and the other end is installed on the articulated cylinder interface set on the shield tail. The third cylinder interface and the articulated cylinder interface of the shield tail determine the position and distribution of the articulated cylinder. Since the articulated cylinder component is detachably connected between the middle shield shell and the annular support component, the articulated cylinder component can be connected to any articulated mechanism mounting part. Therefore, the articulated cylinder component can be connected to the required articulated mechanism mounting part by disassembling the articulated cylinder component to achieve the purpose of adjusting the position and distribution of the articulated cylinder component. The third cylinder interface is provided on the articulated cylinder component, that is, the position and distribution of the third cylinder interface can be adjusted. In addition, the articulated cylinder interface on the shield tail is adjustable to adapt to the position change of the third cylinder interface. In actual application, a new shield tail can be made according to actual needs, and the articulated cylinder interface of the new shield tail corresponds to the third cylinder interface to ensure the normal articulation of the middle shield and the shield tail.

[0030] It can be seen from this that, in the shield machine provided by the embodiment of the present invention, the positions and distributions of the first cylinder interface and the second cylinder interface for installing the thrust cylinder can be adjusted; at the same time, the position and distribution of the third cylinder interface for installing the articulated cylinder can be adjusted, and the articulated cylinder interface of the shield tail is adjustable. Therefore, the positions and distributions of the thrust cylinder and the articulated cylinder can be changed, which solves the problem of limited segment assembly scheme of the shield machine due to the fixed positions of the thrust cylinder and the articulated cylinder, expands the modification scope of the shield machine, improves the versatility of the shield machine, and makes the reuse rate of the shield machine high. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention 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 embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0032] Figure 1 A schematic diagram of the structure of a shield machine provided by a specific embodiment of the present invention;

[0033] Figure 2 It is a structural schematic diagram of the distribution of the propulsion cylinder components and the articulation cylinder components in a specific embodiment of the present invention;

[0034] Figure 3 It is a structural schematic diagram of a group of propulsion cylinder components and articulation cylinder components in one embodiment of the present invention;

[0035] Figure 4 It is a structural schematic diagram of a group of propulsion cylinder components and articulation cylinder components in another embodiment of the present invention;

[0036] Figure 5 Schematic diagram of the relative positions of the propulsion cylinder component and the articulation cylinder component at the same distribution angle in an embodiment of the present invention.

[0037] Figures 1 to 5 The reference numerals in the figures are as follows:

[0038] 1 is the middle shield, 11 is the middle shield shell, 12 is the middle shield connecting flange, 13 is the annular support component, 14 is the propulsion cylinder component, 141 is the inner fixing seat, 142 is the outer fixing seat, 143 is the connecting plate, 144 is the cylinder base, 145 is the first expansion plate, 146 is the first pre-welded plate, 15 is the propulsion cylinder, 16 is the articulated cylinder component, 161 is the articulated support, 1611 is the grouting pipe interface, 162 is the second pre-welded plate, 163 is the second expansion plate, 17 is the articulated cylinder, 2 is the shield tail, 3 is the front shield, 31 is the front shield shell, and 32 is the front shield connecting flange. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in 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 creative work are within the scope of protection of the present invention.

[0040] The core of the present invention is to provide a shield machine, which can change the distribution positions of the propulsion cylinder and the articulated cylinder to improve the reuse rate of the shield machine.

[0041] Please refer to Figure 1-Figure 5 , Figure 1 A schematic diagram of the structure of a shield machine provided by a specific embodiment of the present invention; Figure 2 It is a structural schematic diagram of the distribution of the propulsion cylinder components and the articulation cylinder components in a specific embodiment of the present invention; Figure 3 It is a structural schematic diagram of a group of propulsion cylinder components and articulation cylinder components in one embodiment of the present invention; Figure 4 It is a structural schematic diagram of a group of propulsion cylinder components and articulation cylinder components in another embodiment of the present invention; Figure 5 Schematic diagram of the relative positions of the propulsion cylinder component and the articulation cylinder component at the same distribution angle in an embodiment of the present invention.

[0042] The embodiment of the present invention provides a shield machine, including a middle shield 1, a middle shield connecting flange 12, an annular support component 13, a propulsion cylinder component 14, a propulsion cylinder 15, an articulated cylinder component 16, an articulated cylinder 17 and a shield tail 2, wherein the middle shield 1 includes a middle shield shell 11; the middle shield connecting flange 12 is arranged at the front end of the middle shield 1, and the middle shield connecting flange 12 is provided with a first cylinder interface with an adjustable position; the annular support component 13 is arranged inside the middle shield shell 11, and the annular support component 13 is provided with a plurality of propulsion mechanism mounting parts and a plurality of articulated mechanism mounting parts; the propulsion cylinder component 14 is detachably connected to the middle shield shell 11; the middle shield connecting flange 12 is provided with a first cylinder interface with an adjustable position; ... middle shield connecting flange 12 is provided with a first cylinder interface with an adjustable position; the middle shield connecting flange 12 is provided with a first cylinder interface with an adjustable position; the middle shield connecting flange 12 is provided with a Between the middle shield shell 11 and the annular support component 13, the propulsion cylinder component 14 can be connected to any propulsion mechanism installation part, and the propulsion cylinder component 14 is provided with a second cylinder interface; the propulsion cylinder 15 is respectively connected to the first cylinder interface and the second cylinder interface; the articulated cylinder component 16 is detachably connected between the middle shield shell 11 and the annular support component 13, and the articulated cylinder component 16 can be connected to any articulated mechanism installation part, and the articulated cylinder component 16 is provided with a third cylinder interface, and the articulated cylinder 17 is respectively connected to the third cylinder interface and the shield tail 2, and the articulated cylinder interface of the shield tail 2 is adjustable.

[0043] It can be understood that the first cylinder interface is used to install one end of the propulsion cylinder 15, and the second cylinder interface is used to install the other end of the propulsion cylinder 15. After the propulsion cylinder 15 is connected to the first cylinder interface and the second cylinder interface respectively, the installation of the propulsion cylinder 15 is realized. The position and distribution of the first cylinder interface and the second cylinder interface determine the position and distribution of the propulsion cylinder 15. Since the position of the first cylinder interface is adjustable at the middle shield connection flange 12, the position and layout of the first cylinder interface can be changed by adjusting the position of the first cylinder interface at the middle shield connection flange 12; and because the propulsion cylinder component 14 is detachably connected between the middle shield shell 11 and the annular support component 13, the propulsion cylinder component 14 can be connected to any propulsion mechanism installation part. Therefore, the propulsion cylinder component 14 can be connected to the required propulsion mechanism installation part by disassembling the propulsion cylinder component 14, so as to achieve the purpose of adjusting the position and distribution of the propulsion cylinder component 14. The second cylinder interface is provided at the propulsion cylinder component 14, that is, the position and distribution of the second cylinder interface can be adjusted.

[0044] Similarly, the middle shield 1 and the shield tail 2 are connected by an articulated cylinder 17, one end of which is mounted on the third cylinder interface, and the other end is mounted on the shield tail 2. The structure of the third cylinder interface and the shield tail 2 determines the position and distribution of the articulated cylinder 17. Since the articulated cylinder component 16 is detachably connected between the middle shield shell 11 and the annular support component 13, the articulated cylinder component 16 can be connected to any articulated mechanism mounting portion. Therefore, the articulated cylinder component 16 can be disassembled to connect the articulated cylinder component 16 to the required articulated mechanism mounting portion, so as to achieve the purpose of adjusting the position and distribution of the articulated cylinder component 16. The third cylinder interface is provided on the articulated cylinder component 16, that is, the position and distribution of the third cylinder interface can be adjusted. In addition, the articulated cylinder interface on the shield tail 2 is adjustable to adapt to the position change of the third cylinder interface. In practical applications, a new shield tail 2 can be made according to actual needs, and the articulation cylinder interface of the new shield tail 2 corresponds to the interface of the third cylinder to ensure normal articulation of the middle shield 1 and the shield tail 2.

[0045] It can be seen from this that in the shield machine provided by the embodiment of the present invention, the position and distribution of the first cylinder interface and the second cylinder interface for installing the thrust cylinder 15 can be adjusted; at the same time, the position and distribution of the third cylinder interface for installing the articulated cylinder 17 can be adjusted, and the shield tail 2 can be replaced. Therefore, the position and distribution of the thrust cylinder 15 and the articulated cylinder 17 can be changed, which solves the problem of limited segment assembly scheme of the shield machine due to the fixed position of the thrust cylinder 15 and the articulated cylinder 17, expands the modification scope of the shield machine, improves the versatility of the shield machine, and makes the reuse rate of the shield machine high.

[0046] It should be noted that the present embodiment does not limit the specific structure of the position adjustment of the first cylinder interface on the middle shield connecting flange 12. In some embodiments, the middle shield connecting flange 12 is provided with a plurality of mounting holes, and the first cylinder interface is detachably mounted on the mounting holes. By disassembling the first cylinder interface and connecting the first cylinder interface to the desired mounting holes, the position and distribution of the first cylinder interface can be adjusted.

[0047] In addition, this embodiment does not limit the specific structure of the propulsion mechanism mounting portion. In some embodiments, the propulsion mechanism mounting portion is a mounting hole.

[0048] In some embodiments, the annular support component 13 is provided with at least two circles of mounting holes with different radial positions, and the mounting holes in the same circle are distributed circumferentially along the outer periphery of the annular support component 13 to facilitate adjustment of the circumferential and radial positions of the propulsion cylinder component 14 .

[0049] Furthermore, the above-mentioned embodiments do not limit the specific structure of the propulsion cylinder component 14. Considering the convenience of disassembly and assembly, in some embodiments, the propulsion cylinder component 14 includes an inner fixing seat 141, an outer fixing seat 142, a connecting plate 143, a cylinder base 144 and a first pre-welded plate 146. The inner fixing seat 141 and the outer fixing seat 142 are arranged opposite to each other, and the inner fixing seat 141 and the outer fixing seat 142 are respectively detachably connected to the connecting plate 143 to form a second cylinder interface. The inner fixing seat 141 is detachably connected to the cylinder base 144, and the cylinder base 144 is detachably connected to the annular support component 13. The first pre-welded plate 146 is arranged at a position of the middle shield shell 11 corresponding to the outer fixing seat 142, and the first pre-welded plate 146 is detachably connected to the outer fixing seat 142.

[0050] When it is necessary to change the position and distribution of the propulsion cylinder 15, remove the cylinder base 144 from the annular support component 13, find the propulsion mechanism installation part that meets the propulsion cylinder distribution plan according to the distribution of the propulsion mechanism installation part, and connect multiple cylinder bases 144 to the annular support component 13 at the corresponding required propulsion mechanism installation parts; adjust the end of the propulsion cylinder 15 away from the cylinder base 144 to the corresponding first cylinder interface for installation.

[0051] In some embodiments, there is a clearance fit between the inner fixing seat 141 and the outer fixing seat 142. This fit facilitates assembly.

[0052] In some embodiments, the connecting plate 143 is connected to the inner fixing seat 141 and the outer fixing seat 142 respectively by bolts.

[0053] It can be understood that the propulsion cylinder 15 includes a single cylinder and a double cylinder, and correspondingly, the inner fixing seat 141 includes a single cylinder inner fixing seat and a double cylinder inner fixing seat, and the outer fixing seat 142 includes a single cylinder outer fixing seat and a double cylinder outer fixing seat. In order to improve the versatility of the connection structure, in some embodiments, the single cylinder inner fixing seat and the double cylinder inner fixing seat are the same in structure except for the different structures at the second cylinder interface; the single cylinder outer fixing seat and the double cylinder outer fixing seat are the same in structure except for the different structures at the second cylinder interface, so as to facilitate the connection of the single cylinder inner fixing seat and the double cylinder inner fixing seat with the annular support component 13 respectively, and the connection of the single cylinder outer fixing seat and the double cylinder outer fixing seat with the middle shield shell 11 respectively.

[0054] It is understandable that the oil cylinder base 144 facilitates the connection between the inner fixing seat 141 and the annular support member 13. In some embodiments, a positioning pin is provided between the oil cylinder base 144 and the annular support member 13, and the two are connected by bolts.

[0055] In some embodiments, one of the inner fixing seat 141 and the cylinder base 144 is provided with a first boss, and the other is provided with a first groove, and the first boss and the first groove are matched in a concave-convex manner to enhance the anti-twisting ability of the shield machine.

[0056] In some embodiments, the inner fixing seat 141 and the cylinder base 144 are connected by bolts.

[0057] In some embodiments, the first expansion plate 145 is provided with holes so that the oil cylinder base 144, the first expansion plate 145 and the annular support component 13 can be positioned by positioning pins and connected by bolts.

[0058] In addition, the first pre-welded plate 146 facilitates the connection between the outer fixing seat 142 and the middle shield shell 11. In some embodiments, the first pre-welded plate 146 is welded to the inner side of the middle shield shell 11 according to the distribution angle of the propulsion cylinder 15. It should be noted that when the position and distribution of the propulsion cylinder 15 are changed, the middle shield shell 11 can be newly manufactured, or the position of the first pre-welded plate 146 can be partially adjusted according to the situation to ensure that the distribution position of the first pre-welded plate 146 is consistent with the distribution position of the propulsion cylinder 15.

[0059] In some embodiments, one of the first pre-welded plate 146 and the outer fixing seat 142 is provided with a second boss, and the other is provided with a second groove, and the second boss and the second groove are matched in a concave-convex manner to enhance the anti-twisting capability of the shield machine.

[0060] In some embodiments, the first pre-welded plate 146 and the outer fixing seat 142 are connected by bolts.

[0061] In addition, it should be noted that the above-mentioned embodiment does not limit the specific structure of the articulated cylinder component 16. Considering the convenience of disassembly and assembly, in some embodiments, the articulated cylinder component 16 includes an articulated support 161 and a second pre-welded plate 162, and the third cylinder interface is arranged on the articulated support 161, and the position of the articulated support 161 can be adjusted to be connected to any articulated mechanism mounting part; the second pre-welded plate 162 is arranged at a position of the middle shield shell 11 corresponding to the articulated support 161, and is detachably connected to the articulated support 161.

[0062] During installation, the articulated support 161 is installed on the required articulated mechanism installation part according to the configuration requirements of the articulated cylinder 17 of the shield machine; when it is necessary to change the position and distribution of the articulated cylinder 17, the connection between the articulated support 161 and the annular support component 13 and the second pre-welded plate 162 is removed respectively, and the installation position of the articulated support 161 on the annular support component 13 is changed, and the position of the second pre-welded plate 162 is adjusted accordingly.

[0063] It should be noted that the second pre-welded plate 162 is provided to facilitate the connection between the articulated support 161 and the middle shield shell 11. In some embodiments, the second pre-welded plate 162 is welded to the inner side of the middle shield shell 11 according to the distribution angle of the articulated oil cylinder 17. It should be noted that when the position and distribution of the articulated oil cylinder 17 are changed, the middle shield shell 11 can be newly manufactured, or the position of the second pre-welded plate 162 can be partially adjusted according to the situation to ensure that the distribution position of the second pre-welded plate 162 is consistent with the distribution position of the articulated oil cylinder 17.

[0064] In some embodiments, a positioning pin is provided between the hinged support 161 and the annular support member 13, and the two are connected by bolts.

[0065] In some embodiments, one of the hinged support 161 and the second pre-welded plate 162 is provided with a third boss, and the other is provided with a third groove, and the third boss and the third groove are matched in a concave-convex manner to enhance the anti-twisting ability of the shield machine.

[0066] Further, in some embodiments, the hinged support 161 and the second pre-welded plate 162 are connected by bolts.

[0067] In some embodiments, the hinged support 161 is provided with a grouting pipe interface 1611 for installing the advance grouting pipe. That is, in this embodiment, the hinged support 161 is provided with a grouting pipe interface 1611, and the hinged support 161 is used to provide support for the advance grouting pipe, so as to save space.

[0068] In addition, in order to make full use of the space and maintain the strength of the shield body of the shield machine, and avoid interference when arranging the propulsion cylinder 15 and the articulation cylinder 17, in some embodiments, the propulsion cylinder component 14 and the articulation cylinder component 16 are staggered along the length direction of the middle shield 1. This is conducive to avoiding interference between the articulation cylinder component 16 and the propulsion cylinder component 14 due to uneven distribution angles.

[0069] In some embodiments, two propulsion cylinder components 14 are provided along the axial direction of the annular support component 13 at the same distribution angle of the annular support component 13, that is, the two propulsion cylinder components 14 are arranged front and back along the excavation direction, and the articulated support 161 of the articulated cylinder component 16 is provided between the two propulsion cylinder components 14, that is, the propulsion cylinder component 14 and the articulated cylinder component 16 are staggered and distributed along the length direction of the middle shield 1 while having a part of overlap, which can make full use of the space and maintain the strength of the shield body of the shield machine while avoiding mutual interference.

[0070] In addition, in order to achieve the expansion of the shield machine, in some embodiments, the shield machine also includes a first expansion plate 145 and a second expansion plate 163. The first expansion plate 145 is used to be detachably installed between the cylinder base 144 and the annular support component 13; the second expansion plate 163 is used to be detachably installed between the hinged support 161 and the annular support component 13.

[0071] In this embodiment, the first diameter expansion plate 145 and the second diameter expansion plate 163 are added to realize the diameter change of the middle shield 1. When the first diameter expansion plate 145 is not installed between the oil cylinder base 144 and the annular support component 13, and the second diameter expansion plate 163 is not installed between the hinge support 161 and the annular support component 13, the outer diameter of the middle shield 1 is relatively small; when the first diameter expansion plate 145 is installed between the oil cylinder base 144 and the annular support component 13, and the second diameter expansion plate 163 is installed between the hinge support 161 and the annular support component 13, the outer diameter of the middle shield 1 can be increased. The thickness of the first diameter expansion plate 145 and the second diameter expansion plate 163 is the increase in the radius of the middle shield 1. In this embodiment, the specific thickness of the first diameter expansion plate 145 and the second diameter expansion plate 163 is not limited, and those skilled in the art can set it according to actual needs. This structure can realize the diameter change of the middle shield 1 without changing the core components of the middle shield 1, and the operation is simple and fast.

[0072] Specifically, when the diameter of the middle shield 1 needs to be expanded, the steps are as follows:

[0073] Remove the connection between the front shield 3 and the middle shield 1 of the shield machine, and separate the front shield 3 and the middle shield 1;

[0074] Remove the connecting plate 143 from the inner fixing seat 141 and the outer fixing seat 142 respectively, and remove the hinge support 161 from the second pre-welded plate 162. At this time, remove the middle shield shell 11 together with the first pre-welded plate 146, the outer fixing seat 142 and the second pre-welded plate 162 from the shield body;

[0075] Remove the functional components such as the propulsion cylinder 15 and the articulation cylinder 17;

[0076] Replace the middle shield shell 11 with a larger size;

[0077] The oil cylinder base 144 is removed from the annular support component 13, and a first diameter expansion plate 145 is installed on the side of the oil cylinder base 144 facing the annular support component 13, and then the oil cylinder base 144, the first diameter expansion plate 145 and the annular support component 13 are connected together;

[0078] The hinge support 161 is removed from the annular support member 13, a second diameter expansion plate 163 is installed on the side of the hinge support 161 facing the annular support member 13, and the hinge support 161, the second diameter expansion plate 163 and the annular support member 13 are connected together;

[0079] Reinstall the middle shield shell 11, the first pre-welded plate 146, the outer fixing seat 142 and the second pre-welded plate 162, and connect the inner fixing seat 141 and the outer fixing seat 142 together using the connecting plate 143;

[0080] A new shield tail 2 with a larger diameter is manufactured and installed accordingly.

[0081] Thus, the diameter expansion operation of the middle shield 1 and the shield tail 2 is realized. It can be seen that this embodiment ensures the integrity of core components such as the propulsion cylinder component 14 and the articulated cylinder component 16, improves the transformation efficiency, and solves the problems of complex diameter change operation of the shield machine and large changes in core components.

[0082] It can be understood that the first expansion plate 145 and the second expansion plate 163 are respectively provided with holes so that the cylinder base 144, the first expansion plate 145 and the annular support component 13 can be positioned by positioning pins and connected by bolts; and the hinged support 161, the second expansion plate 163 and the annular support component 13 can be positioned by positioning pins and connected by bolts.

[0083] In some embodiments, the annular support component 13 is provided with a plurality of mounting holes, and the mounting holes can be used as any one of the propulsion mechanism mounting parts and the articulation mechanism mounting parts. That is to say, the mounting holes can be used as both the propulsion mechanism mounting part and the articulation mechanism mounting part. The propulsion cylinder component 14 can be connected to any mounting hole, and the articulation cylinder component 16 can also be connected to any mounting hole.

[0084] In order to facilitate the diameter change of the front shield 3 of the shield machine, in some embodiments, the outer periphery of the front shield 3 of the shield machine is provided with a detachable front shield shell 31. That is, in this embodiment, the diameter change of the front shield 3 is achieved by replacing the front shield shells 31 of different sizes.

[0085] Considering the convenience of connecting the front shield 3 with the middle shield 1 , in some embodiments, the front shield 3 is provided with a front shield connecting flange 32 , and the front shield connecting flange 32 is connected to the middle shield connecting flange 12 by bolts to achieve docking of the front shield 3 with the middle shield 1 .

[0086] It should be noted that in the above-mentioned embodiments, the specific structure of the middle shield shell 11 is not limited. In some embodiments, the middle shield shell 11 includes a plurality of segmented shells, that is, the middle shield shell 11 is formed by splicing a plurality of segmented shells to facilitate replacement of the middle shield shell 11 with different diameters.

[0087] It should also be noted that, in this specification, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0088] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0089] The shield machine provided by the present invention is introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation method of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A shield machine, characterized in that: include: A middle shield (1), comprising a middle shield shell (11); A middle shield connecting flange (12) is arranged at the front end of the middle shield (1), and the middle shield connecting flange (12) is provided with a first oil cylinder interface with adjustable position; An annular support component (13) is arranged inside the middle shield shell (11), and the annular support component (13) is provided with a plurality of propulsion mechanism mounting parts and a plurality of hinge mechanism mounting parts; A propulsion cylinder component (14) is detachably connected between the middle shield shell (11) and the annular support component (13), and can be connected to any of the propulsion mechanism mounting parts. The propulsion cylinder component (14) is provided with a second cylinder interface; An articulated oil cylinder component (16) is detachably connected between the middle shield shell (11) and the annular support component (13), can be connected to any of the articulated mechanism mounting parts, and is provided with a third oil cylinder interface; A propulsion cylinder (15) connected to the first cylinder interface and the second cylinder interface respectively; An articulated oil cylinder (17) is respectively connected to the third oil cylinder interface and the shield tail (2) of the shield machine, wherein the shield tail (2) is provided with an articulated oil cylinder interface with adjustable position; The propulsion cylinder component (14) comprises: An inner fixing seat (141) and an outer fixing seat (142) are arranged opposite to each other and connected via a detachable connecting plate (143) to form the second oil cylinder interface; A cylinder base (144) detachably connected between the inner fixing seat (141) and the annular support component (13); A first pre-welded plate (146) is arranged on the inner side of the middle shield shell (11) at a position corresponding to the outer fixing seat (142) and is detachably connected to the outer fixing seat (142); The articulated cylinder component (16) comprises: An articulated support (161) is provided with the third oil cylinder interface, the position of the articulated support (161) is adjustable, and is connected to any of the articulated mechanism mounting parts; The second pre-welded plate (162) is arranged on the inner side of the middle shield shell (11) at a position corresponding to the hinged support (161), and is detachably connected to the hinged support (161).

2. The shield machine according to claim 1, characterized in that: The hinged support (161) is provided with a grouting pipe interface (1611) for installing an advance grouting pipe.

3. The shield machine according to claim 1 or 2, characterized in that: The propulsion cylinder component (14) and the articulation cylinder component (16) are staggered and distributed along the length direction of the middle shield (1).

4. The shield machine according to claim 1, characterized in that: Also includes: A first diameter expansion plate (145) is used to be detachably mounted between the oil cylinder base (144) and the annular support component (13); The second diameter expansion plate (163) is used to be detachably installed between the hinge support (161) and the annular support component (13).

5. The shield machine according to claim 1 or 2, characterized in that: The annular support component (13) is provided with a plurality of mounting holes, and the mounting holes can be used as any one of the propulsion mechanism mounting parts and the hinge mechanism mounting parts.

6. The shield machine according to claim 1 or 2, characterized in that: A detachable front shield shell (31) is provided on the outer periphery of the front shield (3) of the shield machine.

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