A tunnel boring machine main machine capable of blind hole disassembly and a tunnel boring machine

Abstract

The present invention provides a tunnel boring machine mainframe and a tunnel boring machine capable of blind hole disassembly, belonging to the technical field of tunnel boring equipment. The tunnel boring machine mainframe includes a detachable cutter disc, a shield, a main drive and a support shield. The cutter disc includes at least two cutter disc blocks that are detachably connected together. The shield includes an upper shield body and a lower shield body that can be detached separately. The main drive includes a head frame main structure and a connecting head structure that is detachably connected to the head frame main structure. The support shield includes at least two supporting shield blocks that are detachably connected together. When disassembling the machine in a blind hole, first remove the supporting shield blocks of the support shield and remove the propulsion cylinder, then remove the connecting head structure, then remove the upper shield body and the lower shield body of the shield and the head frame main structure, and finally remove the cutting disc blocks of the cutter disc. The present invention carries out targeted design of the cutter disc, the shield, the main drive and the support shield, and does not need to expand a special disassembly cavern. The mainframe can be disassembled directly in the blind hole, thereby reducing the consumption of manpower, material resources and financial resources.

Description

Technical Field

[0001] The invention relates to a tunnel boring machine mainframe capable of blind hole dismantling and a tunnel boring machine, belonging to the technical field of tunnel boring equipment. Background Art

[0002] At present, the successful trial application of small-diameter (excavation diameter 3530mm) TBM in pumped-storage power stations has fully proved that TBM construction technology has greatly improved the inherent safety and physical quality of the project, is beneficial to environmental protection, occupational health and civilized construction, and promoted the application of "new technologies, new processes, new processes, new equipment and new materials". It has laid the foundation for the comprehensive implementation of mechanized construction in pumped-storage power stations in the future, and at the same time promoted the technological upgrading of domestic pumped-storage power station construction equipment.

[0003] For example, a Chinese invention patent application with application publication number CN111794759A discloses a TBM for drainage corridors of a pumped-storage power station and a construction method thereof, which includes a TBM mainframe, a belt conveyor, TBM rear accessories and a bracket. The TBM mainframe includes a front shield, a thrust cylinder and a support shield. The front end of the thrust cylinder is connected to the rear of a main drive housing, and the rear end is connected to a front panel of the support shield. The front shield includes a front shield upper shield body connected to the main drive housing through a telescopic cylinder and a front shield lower shield body connected to the main drive housing. A support shoe system is provided in the support shield. The structure of the above-mentioned TBM main machine is the same as the tunnel boring machine main machine disclosed in the Chinese invention patent application with application publication number CN111520153A, both of which include a cutter head, a front shield (i.e., a protective shield), a main drive, a thrust cylinder and a support shield. The main drive usually includes a head frame main structure and a mushroom head structure arranged on the head frame main structure. The front end of the thrust cylinder is connected to the mushroom head structure and the rear end is connected to the support shield. Therefore, the mushroom head structure actually constitutes a connecting head structure for connecting the thrust cylinder.

[0004] After the existing TBM has completed tunnel excavation, the rear supporting parts are usually pulled out of the tunnel through the track in the tunnel for dismantling, while the main machine is dismantled on the receiving bracket and towed out of the cave by a tractor, that is, a special dismantling cave connected to the blind tunnel needs to be expanded and dug, and then transported out of the cave after the dismantling cave is disassembled. However, expanding and digging the dismantling cave will cause waste of manpower, material and financial resources. Therefore, it is necessary to provide a main machine of the tunnel boring machine that can be dismantled directly in the blind tunnel without expanding the cave to reduce the consumption of manpower, material and financial resources. Summary of the invention

[0005] The purpose of the present invention is to provide a tunnel boring machine main body that can be dismantled in a blind hole, so as to solve the problem that the existing tunnel boring machine main body needs to expand and dig a special tunnel for dismantling the machine before it can be dismantled and exit the hole, resulting in a relatively large consumption of manpower, material resources and financial resources; the purpose of the present invention is also to provide a tunnel boring machine, so as to solve the problem that the existing tunnel boring machine main body needs to expand and dig a special tunnel for dismantling the machine before it can be dismantled and exit the hole, resulting in a relatively large consumption of manpower, material resources and financial resources.

[0006] To achieve the above purpose, the main machine of the tunnel boring machine capable of blind hole disassembly in the present invention adopts the following technical solution:

[0007] A main machine of a tunnel boring machine capable of blind hole disassembly comprises a cutter disc, a protective shield, a main drive and a support shield, wherein the cutter disc comprises at least two cutter disc blocks which are detachably connected together, the protective shield comprises an upper shield body and a lower shield body which are separately detachable, the main drive comprises a head frame main structure and a connecting head structure which is detachably connected to the head frame main structure, the support shield comprises at least two supporting shield blocks which are detachably connected together, and the main machine of the tunnel boring machine capable of blind hole disassembly further comprises a propulsion cylinder installed between the connecting head structure and the supporting shield block; when disassembling the machine in a blind hole, firstly remove the supporting shield blocks of the supporting shield and remove the propulsion cylinder, and then remove the connecting head structure, or first remove the supporting shield blocks of the supporting shield, and then remove the propulsion cylinder and the connecting head structure, then remove the upper shield body and the lower shield body of the protective shield and the head frame main structure, and finally remove the cutter disc blocks of the cutter disc.

[0008] The beneficial effect of the above technical solution is that the cutter disc, shield, main drive and support shield of the tunnel boring machine main body in the present invention can be disassembled. Specifically, the cutter disc includes at least two cutter disc blocks that can be detachably connected together, the shield includes an upper shield body and a lower shield body that can be detached separately, the main drive includes a head frame main structure and a connecting head structure that can be detachably connected to the head frame main structure, the support shield includes at least two supporting shield blocks that can be detachably connected together, and of course the tunnel boring machine main body also includes a propulsion cylinder installed between the connecting head structure and the support shield block. When dismantling the main machine of a tunnel boring machine with such a structural form, first remove the various support shield blocks of the support shield and remove the thrust cylinder. These parts can be directly pulled out horizontally through the lifting points in the hole to achieve the dismantling of the rear structure of the main machine of the tunnel boring machine; then remove the connecting head structure, otherwise the existence of the connecting head structure will affect the dismantling of the shield; or first remove the various support shield blocks of the support shield, and then remove the thrust cylinder and the connecting head structure, and then remove the upper shield body and the lower shield body of the shield and the main structure of the head frame to achieve the dismantling of the main structure of the front part of the tunnel boring machine main machine; finally remove the various cutter disc blocks of the cutter disc to achieve the dismantling of the front end structure of the tunnel boring machine main machine. The entire dismantling process is based on the fact that each part can be disassembled itself, so that it can be dismantled in blocks and directly transferred out of the hole. There is no need to expand a special dismantling cavern, and the main machine can be dismantled directly in the blind hole, thereby reducing the consumption of manpower, material resources and financial resources.

[0009] Furthermore, the upper shield body is formed by detachably connecting at least two upper shield blocks.

[0010] The beneficial effect of the above technical solution is that when removing the upper shield body, the upper shield blocks can be removed one by one, thereby facilitating the removal of the upper shield body and reducing the difficulty of disassembly.

[0011] Furthermore, the upper shield body is composed of three upper shield blocks that are detachably connected, and the middle upper shield block has a structure that is small in the front and large in the back; when removing the shield in the blind hole, the upper shield body is removed first, and then the lower shield body is removed; when removing the upper shield body, the middle upper shield block is removed first, and then the upper shield blocks on the left and right sides are removed.

[0012] The beneficial effect of the above technical solution is that: there are three upper shield blocks, and the middle upper shield block has a structure that is small in the front and large in the back, so this block is easier to dismantle, so the upper shield body is removed first, and then the lower shield body is removed, and when removing the upper shield body, the middle upper shield block is removed first, and then the upper shield blocks on the left and right sides are removed, which can facilitate the removal of the shield and reduce the difficulty of disassembly.

[0013] Furthermore, the lower shield body is formed by detachably connecting at least two lower shield blocks.

[0014] The beneficial effect of the above technical solution is that when removing the lower shield body, the lower shield blocks can be removed one by one, thereby facilitating the removal of the lower shield body and reducing the difficulty of disassembly.

[0015] Furthermore, the lower shield body is composed of three lower shield blocks that are detachably connected, and the main structure of the head frame is supported on the middle lower shield block. When removing the lower shield body, the lower shield blocks on the left and right sides are first removed, and the middle lower shield block is removed after the main structure of the head frame is removed.

[0016] The beneficial effect of the above technical solution is that: there are three lower shield blocks. Since the main structure of the head frame is supported on the middle lower shield block, when removing the lower shield body, the lower shield blocks on the left and right sides are removed first, and the middle lower shield block is removed after the main structure of the head frame is removed. This not only facilitates the removal of the lower shield body, but also ensures that the main structure of the head frame is supported before removing the main structure of the head frame.

[0017] Furthermore, the excavation diameter of the cutter disc is greater than three meters and less than four meters, and there are three cutter disc blocks.

[0018] The beneficial effects of the above technical solution are: the excavation diameter of the cutter head is not very large, which is not only suitable for the excavation of small diameter tunnels such as pumped storage power stations, but also does not require a lot of cutter head blocks. Only three cutter head blocks are needed, which has a simple structure and is easy to manufacture and dismantle.

[0019] Furthermore, the support shield blocks include four blocks, upper, lower, left and right, and the two left and right support shield blocks are used for installing support shoes.

[0020] The beneficial effect of the above technical solution is that: the support shield blocks have four upper, lower, left and right blocks, and the structure is more reasonable, which is not only convenient for installing the support boots on the left and right support shield blocks, but also convenient for removing the support shield.

[0021] Furthermore, when removing the support shield, first remove the top support shield block, then remove the left and right support shield blocks, and finally remove the bottom support shield block.

[0022] The beneficial effect of the above technical solution is that: first remove the top support shield block, then remove the left and right support shield blocks, and finally remove the bottom support shield block. This is a top-to-bottom removal order, which is not only convenient for removal, but also conducive to ensuring the support and stability of the remaining shield blocks.

[0023] Furthermore, the connecting head structure is connected to the main structure of the head frame through bolts.

[0024] The beneficial effects of the above technical solution are: simple structure and convenient assembly and disassembly.

[0025] To achieve the above purpose, the tunnel boring machine in the present invention adopts the following technical solutions:

[0026] A tunnel boring machine comprises a tunnel boring machine main body and rear supporting equipment, the tunnel boring machine main body comprises a detachable cutter disc, a shield, a main drive and a support shield, the cutter disc comprises at least two detachably connected cutter disc blocks, the shield comprises an upper shield body and a lower shield body which can be detached separately, the main drive comprises a head frame main structure and a connecting head structure which can be detachably connected to the head frame main structure, the support shield comprises at least two detachably connected supporting shield blocks, and the tunnel boring machine main body also comprises a propulsion cylinder installed between the connecting head structure and the supporting shield blocks; when dismantling the machine in a blind hole, firstly remove the supporting shield blocks of the supporting shield and remove the propulsion cylinder, and then remove the connecting head structure, or first remove the supporting shield blocks of the supporting shield, then remove the propulsion cylinder and the connecting head structure, then remove the upper shield body and the lower shield body of the shield and the head frame main structure, and finally remove the cutting disc blocks of the cutter disc.

[0027] The beneficial effect of the above technical solution is that the cutter disc, shield, main drive and support shield of the tunnel boring machine main body in the present invention can be disassembled. Specifically, the cutter disc includes at least two cutter disc blocks that can be detachably connected together, the shield includes an upper shield body and a lower shield body that can be detached separately, the main drive includes a head frame main structure and a connecting head structure that can be detachably connected to the head frame main structure, the support shield includes at least two supporting shield blocks that can be detachably connected together, and of course the tunnel boring machine main body also includes a propulsion cylinder installed between the connecting head structure and the support shield block. When dismantling the main machine of a tunnel boring machine with such a structural form, first remove the various support shield blocks of the support shield and remove the thrust cylinder. These parts can be directly pulled out horizontally through the lifting points in the hole to achieve the dismantling of the rear structure of the main machine of the tunnel boring machine; then remove the connecting head structure, otherwise the existence of the connecting head structure will affect the dismantling of the shield; or first remove the various support shield blocks of the support shield, and then remove the thrust cylinder and the connecting head structure, and then remove the upper shield body and the lower shield body of the shield and the main structure of the head frame to achieve the dismantling of the main structure of the front part of the tunnel boring machine main machine; finally remove the various cutter disc blocks of the cutter disc to achieve the dismantling of the front end structure of the tunnel boring machine main machine. The entire dismantling process is based on the fact that each part can be disassembled itself, so that it can be dismantled in blocks and directly transferred out of the hole. There is no need to expand a special dismantling cavern, and the main machine can be dismantled directly in the blind hole, thereby reducing the consumption of manpower, material resources and financial resources.

[0028] Furthermore, the upper shield body is formed by detachably connecting at least two upper shield blocks.

[0029] The beneficial effect of the above technical solution is that when removing the upper shield body, the upper shield blocks can be removed one by one, thereby facilitating the removal of the upper shield body and reducing the difficulty of disassembly.

[0030] Furthermore, the upper shield body is composed of three upper shield blocks that are detachably connected, and the middle upper shield block has a structure that is small in the front and large in the back; when removing the shield in the blind hole, the upper shield body is removed first, and then the lower shield body is removed; when removing the upper shield body, the middle upper shield block is removed first, and then the upper shield blocks on the left and right sides are removed.

[0031] The beneficial effect of the above technical solution is that: there are three upper shield blocks, and the middle upper shield block has a structure that is small in the front and large in the back, so this block is easier to dismantle, so the upper shield body is removed first, and then the lower shield body is removed, and when removing the upper shield body, the middle upper shield block is removed first, and then the upper shield blocks on the left and right sides are removed, which can facilitate the removal of the shield and reduce the difficulty of disassembly.

[0032] Furthermore, the lower shield body is formed by detachably connecting at least two lower shield blocks.

[0033] The beneficial effect of the above technical solution is that when removing the lower shield body, the lower shield blocks can be removed one by one, thereby facilitating the removal of the lower shield body and reducing the difficulty of disassembly.

[0034] Furthermore, the lower shield body is composed of three lower shield blocks that are detachably connected, and the main structure of the head frame is supported on the middle lower shield block. When removing the lower shield body, the lower shield blocks on the left and right sides are first removed, and the middle lower shield block is removed after the main structure of the head frame is removed.

[0035] The beneficial effect of the above technical solution is that: there are three lower shield blocks. Since the main structure of the head frame is supported on the middle lower shield block, when removing the lower shield body, the lower shield blocks on the left and right sides are removed first, and the middle lower shield block is removed after the main structure of the head frame is removed. This not only facilitates the removal of the lower shield body, but also ensures that the main structure of the head frame is supported before removing the main structure of the head frame.

[0036] Furthermore, the excavation diameter of the cutter disc is greater than three meters and less than four meters, and there are three cutter disc blocks.

[0037] The beneficial effects of the above technical solution are: the excavation diameter of the cutter head is not very large, which is not only suitable for the excavation of small diameter tunnels such as pumped storage power stations, but also does not require a lot of cutter head blocks. Only three cutter head blocks are needed, which has a simple structure and is easy to manufacture and dismantle.

[0038] Furthermore, the support shield blocks include four blocks, upper, lower, left and right, and the two left and right support shield blocks are used for installing support shoes.

[0039] The beneficial effect of the above technical solution is that: the support shield blocks have four upper, lower, left and right blocks, and the structure is more reasonable, which is not only convenient for installing the support boots on the left and right support shield blocks, but also convenient for removing the support shield.

[0040] Furthermore, when removing the support shield, first remove the top support shield block, then remove the left and right support shield blocks, and finally remove the bottom support shield block.

[0041] The beneficial effect of the above technical solution is that: first remove the top support shield block, then remove the left and right support shield blocks, and finally remove the bottom support shield block. This is a top-to-bottom removal order, which is not only convenient for removal, but also conducive to ensuring the support and stability of the remaining shield blocks.

[0042] Furthermore, the connecting head structure is connected to the main structure of the head frame through bolts.

[0043] The beneficial effects of the above technical solution are: simple structure and convenient assembly and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a structural schematic diagram of the main machine of the tunnel boring machine capable of blind hole dismantling in the present invention;

[0045] Figure 2 for Figure 1 A schematic diagram of the side structure of the middle cutter disc;

[0046] Figure 3 for Figure 1 A schematic diagram of the side structure of the middle shield;

[0047] Figure 4 for Figure 1 A schematic diagram of the side structure of the middle support shield;

[0048] Figure 5 for Figure 1 Side view of the main drive structure.

[0049] In the figure: 1. cutter disc; 11. first cutter disc block; 12. second cutter disc block; 13. third cutter disc block; 2. shield; 21. upper shield block on the left; 22. upper shield block in the middle; 23. upper shield block on the right; 24. lower shield block on the left; 25. lower shield block in the middle; 26. lower shield block on the right; 3. main drive; 31. main structure of the head frame; 32. connector structure; 4. support shield; 41. top support shield block; 42. support shield block on the right; 43. support shield block on the left; 44. bottom support shield block; 5. thrust cylinder. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0051] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0052] It should be noted that relational terms such as "first" and "second" that may appear are only 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. Moreover, terms such as "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements that are not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by a sentence such as "comprises a..." does not exclude the existence of other identical elements in the process, method, article or device that includes the element.

[0053] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0054] An embodiment of the tunnel boring machine mainframe capable of blind hole disassembly in the present invention (hereinafter referred to as the tunnel boring machine mainframe) is as follows: Figure 1 As shown, it includes a detachable cutter head 1, a shield 2, a main drive 3 and a support shield 4, wherein the main drive 3 is used to drive the cutter head 1 to rotate, the shield 2 surrounds the main drive 3 and is connected to the main drive 3, and the shield 2 includes an upper shield body and a lower shield body that can be detached separately, and the upper and lower shield bodies are connected together by an oil cylinder, so that the upper shield body can be braced against the cave wall under the action of the oil cylinder to stabilize the cutter head 1. The support shield 4 is arranged behind the shield 2 to support and stabilize the tunnel boring machine.

[0055] The present invention realizes the blind hole dismantling requirements of the main machine components by targeted design of the cutter head 1, the shield 2, the main drive 3 and the support shield 4, thereby achieving the blind hole dismantling of the main machine of the tunnel boring machine without expanding the cave chamber.

[0056] Specifically, the cutterhead 1 includes at least two cutterhead blocks that are detachably connected together. The main machine of the tunnel boring machine in this embodiment is suitable for excavation of small-diameter tunnels such as pumped storage power stations. The excavation diameter of the cutterhead 1 is greater than three meters and less than four meters (for example, 3530 mm), so there is no need to set a lot of cutterhead blocks, such as Figure 2 As shown, there are only three cutter disc blocks, namely the first cutter disc block 11, the second cutter disc block 12 and the third cutter disc block 13. This not only has a simple structure, but is also convenient for manufacturing and dismantling.

[0057] Combination Figure 1 and Figure 5As shown, the main drive 3 includes a head frame main structure 31 and a connecting head structure 32 (i.e., an existing mushroom head structure) detachably connected to the head frame main structure 31. Considering that there are many driving parts inside the head frame main structure 31, it is an integral structure. In addition, the detachable connection method in this embodiment is a bolt connection, which has a simple structure and is convenient for assembly and disassembly.

[0058] The upper shield body is formed by at least two upper shield blocks being detachably connected. Specifically in this embodiment, Figure 3 As shown, the upper shield body is composed of three upper shield blocks that are detachably connected, namely, the upper shield block 21 on the left, the upper shield block 22 in the middle, and the upper shield block 23 on the right, and the adjacent upper shield blocks are connected by a block flange. Among them, the upper shield block 22 in the middle is a structure that is small in the front and large in the back. In this way, when removing the shield in the blind hole, the upper shield body is removed first, and then the lower shield body is removed. When removing the upper shield body, the upper shield block 22 in the middle is removed first, and then the upper shield blocks on the left and right sides are removed. This can facilitate the removal of the shield and reduce the difficulty of disassembly.

[0059] At the same time, the lower shield body is composed of at least two lower shield blocks that can be detachably connected, as shown in the following example: Figure 3 As shown, the lower shield body is composed of three lower shield blocks that are detachably connected, namely the lower shield block 24 on the left, the lower shield block 25 in the middle, and the lower shield block 26 on the right. The two adjacent lower shield blocks are also connected by block flanges. The head frame main structure 31 is supported on the lower shield block 25 in the middle. When removing the lower shield body, the lower shield blocks on the left and right sides are first removed, and the lower shield block 25 in the middle is removed after the head frame main structure 31 is removed. This not only facilitates the removal of the lower shield body, but also ensures that the head frame main structure 31 is supported before the head frame main structure 31 is removed.

[0060] The support shield 4 includes at least two support shield blocks that are detachably connected together, as shown in FIG. Figure 4 As shown, there are four support shield blocks, namely, the top support shield block 41, the right support shield block 42, the left support shield block 43 and the bottom support shield block 44. Two adjacent support shield blocks are also connected by block flanges. Among them, the left and right support shield blocks are used to install support boots (not shown in the figure). When removing the support shield, first remove the top support shield block 41, then remove the left and right support shield blocks, and finally remove the bottom support shield block 44. This is a top-to-bottom removal order, which is not only convenient for removal, but also conducive to ensuring the support and stability of the remaining shield blocks.

[0061] In addition, if Figure 1 As shown, the main machine of the tunnel boring machine also includes a propulsion cylinder 5 installed between the connecting head structure 32 and the supporting shield block, and the propulsion cylinder 5 is used to push the cutter head 1 forward for tunneling.

[0062] When the main machine of the tunnel boring machine of the present invention is dismantled in a blind hole, the following ideas are followed: first, the supporting shield blocks of the supporting shield 4 and the propulsion cylinder 5 are removed, and then the connecting head structure 32 is removed, or first, the supporting shield blocks of the supporting shield 4 are removed, and then the propulsion cylinder 5 and the connecting head structure 32 are removed, and then the upper shield body and the lower shield body of the shield 2 and the main structure 31 of the head frame are removed, and finally, the cutting disc blocks of the cutting disc 1 are removed. A specific operation step is as follows:

[0063] The first step is to remove the support shield 4. Pull out the top support shield block 41 horizontally through the hanging point in the hole, and then remove the right support shield block 42, the left support shield block 43 and the bottom support shield block 44 in sequence. During the removal of the support shield block, the propulsion cylinder 5 can be removed from the connector structure 32, and the propulsion cylinder 5 can be moved out together with the corresponding support shield block, or the propulsion cylinder 5 can be removed from the support shield block first, and then removed from the connector structure 32 and moved out after the support shield block is moved out.

[0064] The second step is to remove the connector structure 32 in the main drive 3 , otherwise the existence of the connector structure 32 will affect the removal of the shield 2 .

[0065] The third step is to pull out the middle upper shield block 22 horizontally through the hanging point in the hole, and then remove the upper shield block 21 on the left, the upper shield block 23 on the right, the lower shield block 24 on the left and the lower shield block 26 on the right in turn, leaving the middle lower shield block 25 to support the main structure 31 of the head frame.

[0066] The fourth step is to dismantle the main structure 31 of the head frame.

[0067] Step 5: remove the lower shield block 25 in the middle.

[0068] Step 6: Remove the first cutter disc block 11, the second cutter disc block 12 and the third cutter disc block 13 of the cutter disc 1 in sequence to complete the in-hole disassembly process.

[0069] The entire dismantling process above is based on the fact that the various parts of the tunnel boring machine mainframe can be disassembled in pieces and directly transferred out of the hole. There is no need to expand a special dismantling cavern, and the mainframe can be dismantled directly in the blind hole, thus reducing the consumption of manpower, material and financial resources.

[0070] In other embodiments of the tunnel boring machine main machine that can be disassembled in a blind hole: when disassembling the machine, the first step may be to first remove the support shield blocks of the support shield. During this process, the thrust cylinder needs to be removed from the support shield block, and then the thrust cylinder and the connecting head structure need to be directly removed from the main structure of the head frame, and then moved out together. The subsequent steps are the same as those in the above-mentioned embodiments.

[0071] In other embodiments of the blind hole dismantling tunnel boring machine main machine: the connecting head structure can also be detachably connected to the main structure of the head frame by means of pins or pressure plates.

[0072] In other embodiments of the tunnel boring machine main machine that can be disassembled in a blind hole: when removing the support shield, you can also first hang the top support shield block, then remove the left and right support shield blocks, and then remove the top support shield block and the bottom support shield block.

[0073] In other embodiments of the tunnel boring machine main machine capable of blind hole disassembly: the support shield block can also be arranged into two left and right blocks.

[0074] In other embodiments of the main machine of the tunnel boring machine capable of blind hole disassembly: when the excavation diameter of the cutter disc is relatively small, the cutter disc block can also be two pieces.

[0075] In other embodiments of the blind hole dismantling tunnel boring machine main machine: when the excavation diameter of the cutter disc is relatively large, the corresponding cutter disc blocks can also be set to four, five or more, and can even be set to include a central cutter disc block and multiple peripheral cutter disc blocks.

[0076] In other embodiments of the tunnel boring machine main machine that can be disassembled in a blind hole: the lower shield body can also be composed of only two lower shield blocks that are detachably connected. At this time, if the main structure of the head frame is supported on the two lower shield blocks, the main structure of the head frame can be disassembled first, and then the two lower shield blocks can be disassembled.

[0077] In other embodiments of the tunnel boring machine main machine capable of blind hole dismantling: the lower shield body may also be an integral structure.

[0078] In other embodiments of the blind hole dismantling tunnel boring machine main machine: the upper shield body can also be composed of only two upper shield blocks that are detachably connected, and in this case, any one of them can be dismantled first.

[0079] In other embodiments of the blind hole dismantling tunnel boring machine main machine: the upper shield body can also be an integrated structure.

[0080] An embodiment of a tunnel boring machine in the present invention is as follows: the tunnel boring machine comprises a tunnel boring machine main body and rear supporting equipment, the rear supporting equipment being used to assist the tunnel boring machine main body in completing normal tunnel boring. After the tunnel boring is completed, the rear supporting equipment is pulled out of the tunnel through the track in the tunnel for disassembly, and the specific structure and disassembly method of the tunnel boring machine main body are the same as those of the tunnel boring machine main body that can be disassembled in a blind hole in the above-mentioned embodiment, and will not be repeated here.

[0081] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.

Claims

1. A main machine of a tunnel boring machine capable of blind hole disassembly, characterized in that: The invention comprises a detachable cutter disc, a protective shield, a main drive and a supporting shield, wherein the cutter disc comprises at least two cutter disc blocks which are detachably connected together, the protective shield comprises an upper shield body and a lower shield body which can be detached separately, the main drive comprises a head frame main structure and a connecting head structure which is detachably connected to the head frame main structure, the supporting shield comprises at least two supporting shield blocks which are detachably connected together, and the tunnel boring machine main machine which can be dismantled in a blind hole further comprises a propulsion cylinder installed between the connecting head structure and the supporting shield block; when dismantling the machine in a blind hole, firstly remove the supporting shield blocks of the supporting shield and the propulsion cylinder, and then remove the connecting head structure, or first remove the supporting shield blocks of the supporting shield, and then remove the propulsion cylinder and the connecting head structure, then remove the upper shield body and the lower shield body of the protective shield and the head frame main structure, and finally remove the cutter disc blocks of the cutter disc, and pull out the protective shield blocks, the supporting shield blocks and the cutter disc blocks horizontally through the hanging points in the hole, without expanding the dismantling cave chamber.

2. The main machine of the tunnel boring machine capable of blind hole dismantling according to claim 1 is characterized in that: The upper shield body is formed by detachably connecting at least two upper shield blocks.

3. The main machine of the tunnel boring machine capable of blind hole dismantling according to claim 2 is characterized in that: The upper shield body is composed of three upper shield blocks that are detachably connected, and the middle upper shield block is a structure that is small in the front and large in the back; when removing the shield in the blind hole, the upper shield body is removed first, and then the lower shield body is removed; when removing the upper shield body, the middle upper shield block is removed first, and then the upper shield blocks on the left and right sides are removed.

4. The main machine of the tunnel boring machine capable of blind hole dismantling according to any one of claims 1 to 3, characterized in that: The lower shield body is formed by detachably connecting at least two lower shield blocks.

5. The main machine of the tunnel boring machine capable of blind hole dismantling according to claim 4 is characterized in that: The lower shield body is composed of three lower shield blocks that are detachably connected, and the main structure of the head frame is supported on the middle lower shield block. When removing the lower shield body, the lower shield blocks on the left and right sides are first removed, and the middle lower shield block is removed after the main structure of the head frame is removed.

6. The main machine of the tunnel boring machine capable of blind hole dismantling according to any one of claims 1 to 3, characterized in that: The excavation diameter of the cutter disc is greater than three meters and less than four meters, and there are three cutter disc blocks.

7. The main machine of the tunnel boring machine capable of blind hole dismantling according to any one of claims 1 to 3, characterized in that: The support shield blocks include four upper, lower, left and right blocks, and the two left and right support shield blocks are used for installing support shoes.

8. The main machine of the tunnel boring machine capable of blind hole dismantling according to claim 7, characterized in that: When removing the support shield, first remove the top support shield block, then remove the left and right support shield blocks, and finally remove the bottom support shield block.

9. The main machine of the tunnel boring machine capable of blind hole dismantling according to any one of claims 1 to 3, characterized in that: The connecting head structure is connected to the main structure of the head frame through bolts.

10. A tunnel boring machine, comprising a tunnel boring machine main machine and ancillary equipment, characterized in that: The main machine of the tunnel boring machine is the same as the main machine of the tunnel boring machine capable of blind hole dismantling as described in any one of claims 1 to 9.

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