A cutter transport system and cutter replacement method for tunnel boring machines

Abstract

This application discloses a cutterhead transport system and cutterhead replacement method for a tunnel boring machine (TBM). The TBM cutterhead transport system includes a main system and further includes: a cutterhead adapter ring, rotatably mounted within the main system; a main drive, located within the main system, to rotate the cutterhead adapter ring; a cutterhead, fixed to the front end of the cutterhead adapter ring, with an atmospheric pressure cutterhead box; cutterhead legs, multiple sets of cutterhead legs fixed between the cutterhead and the cutterhead adapter ring, with transfer channels connecting to the atmospheric pressure cutterhead box on the cutterhead legs, and movable transfer devices within the transfer channels; and a hoisting device, fixed within the main system, used to hoist materials from the main system onto the transfer devices. The TBM cutterhead transport system allows materials to be transported to the atmospheric pressure cutterhead box via transfer devices in multiple transfer channels at a time. Operators can access the atmospheric pressure cutterhead box through multiple transfer channels to inspect and replace the cutterhead cutters, shortening replacement time and improving replacement efficiency.

Description

Technical Field

[0001] This application relates to the field of tunnel boring machine technology, and in particular to a cutter transport system and cutter replacement method for tunnel boring machines. Background Technology

[0002] my country's infrastructure construction is in a period of rapid development. However, my country has many mountainous areas, and tunnels are frequently excavated to facilitate the construction of railways or highways. Tunnel boring machines (TBMs) are indispensable in the tunnel excavation process. During use, the cutterheads of TBMs experience severe wear, requiring manual cutterhead replacement to maintain high excavation efficiency.

[0003] Currently, most existing technologies involve setting up multiple manual cranes at different points within the central compartment. By using the pulling of these cranes at different points, the cutterheads can be moved laterally and longitudinally. However, the corresponding cutter box needs to be rotated to the lowest position of the cutterhead before the operator can enter the lowest atmospheric pressure cutter box along the central compartment to perform atmospheric pressure cutter replacement. Although this can ensure construction safety, the cutter replacement point is singular, requiring multiple operations, which leads to low cutter replacement efficiency and cannot guarantee the high excavation efficiency of the tunnel boring machine.

[0004] Therefore, how to improve the cutter replacement efficiency of tunnel boring machines is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a cutter transport system for tunnel boring machines (TBMs) to improve the cutter changing efficiency of TBMs.

[0006] To achieve the above objectives, the present invention provides a cutter transport system for a tunnel boring machine, comprising a main unit system, and further comprising:

[0007] The tool turret adapter ring is rotatably mounted within the host system;

[0008] The host drive, located within the host system, is used to rotate the tool head adapter ring.

[0009] The cutter head is fixed at the front end of the cutter head adapter ring, and the cutter head is equipped with an atmospheric pressure cutter box chamber;

[0010] The cutter head support legs are fixed between the cutter head and the cutter head adapter ring. The cutter head support legs are provided with a transfer channel that connects to the normal pressure cutter box. A movable transfer device is provided in the transfer channel.

[0011] The hoisting device is fixed inside the main system and is used to hoist materials from the main system onto the transfer device.

[0012] The main drive has a tool changing position. When the main drive is in the tool changing position, the hoisting device hoists the materials in the main system to the transfer device, and the transfer device transports the materials to the atmospheric pressure tool box to complete the tool maintenance and replacement of the tool disc.

[0013] A tunnel boring machine (TBM) cutter transport system includes a transfer device comprising: an annular slide rail, comprising a first annular slide rail and a second annular slide rail of the same structure, the first annular slide rail being fixed within a transfer channel, and the second annular slide rail being fixed within a main drive unit, the first annular slide rail and the second annular slide rail being located on the same axis; a support base, comprising a first support base and a second support base of the same structure, the first support base and the second support base being respectively mounted on the first annular slide rail and the second annular slide rail; and a transfer platform, comprising a telescopic frame, a transport frame, and a counterweight, the telescopic frame being symmetrically fixed to the upper ends of the first support base and the second support base, the transport frame being slidably mounted on the telescopic frame, and the counterweight being fixedly mounted to the lower end of the telescopic frame.

[0014] A cutterhead transport system for a tunnel boring machine includes a support base slidably mounted on an annular slide rail. When all cutterhead legs rotate relative to the main system, the transport platform rotates along the annular track under gravity, ensuring that the transport platform remains horizontally positioned on the annular guide rail. The support base includes: a slider with a flat upper end and an arc-shaped lower end, the lower end of which has a groove that mates with the annular slide rail, and a through-hole cavity at the radial center of the slider; a bearing disposed within the cavity, the circumferential surface of which fits against the inner wall of the annular slide rail; and a pressure block fixedly disposed within the cavity, the lower end of which has a first slot for engaging the bearing, thus fixing the bearing within the cavity.

[0015] A cutter transport system for a tunnel boring machine includes a transfer device further comprising a pin, a first limiting hole on the side wall of an annular slide rail, and a second limiting hole on the side wall of a slider facing the first limiting hole. The first limiting hole and the second limiting hole are interconnected, and the pin is disposed within the first limiting hole and the second limiting hole to keep the annular slide rail and the slider relatively stationary.

[0016] A cutter transport system for a tunnel boring machine, wherein the support base is fixed on an annular slide rail at a horizontal or inclined first angle.

[0017] A tunnel boring machine cutter transport system includes a telescopic frame comprising: a fixed frame, which is an L-shaped plate, symmetrically arranged and fixed to the upper surface of a support base; a first-stage pulley system on the inner wall of each side plate of the fixed frame, and a counterweight fixedly disposed on the lower surface of the fixed frame; and a base frame, which is a square column, with a first receiving groove and a second receiving groove on each side of the base frame, both extending along the length of the base frame; the first receiving groove is fitted onto the first-stage pulley system to allow the base frame to slide on the fixed frame; and the width between the edges of the two base frames near the fixed frame is a first width value.

[0018] A cutter transport system for a tunnel boring machine has a second slot on the side of the transport frame facing the base frame. A secondary pulley assembly is symmetrically arranged in the second slot. The secondary pulley assembly is installed in a second receiving slot, and the base frame is fitted into the second slot so that the transport frame can slide on the base frame.

[0019] A cutter transport system for a tunnel boring machine (TBM) includes a first hoisting device, a second hoisting device, a third hoisting device, and a fourth hoisting device located in a first, second, third, and fourth direction, respectively. Transfer channels in the first, second, third, and fourth directions are designated as a first cutter change channel, a second cutter change channel, a third cutter change channel, and a fourth cutter change channel, respectively. A working platform is provided within the main system. The first and third hoisting devices are symmetrically arranged about the radial centerline of the working platform and are located inside the first and third cutter change channels, respectively. The second hoisting device is installed on the top inner wall of the main system and is located below the second cutter change channel. The fourth hoisting device is located on the lower surface of the working platform and is located above the fourth cutter change channel.

[0020] A method for changing cutterheads in the aforementioned tunnel boring machine cutter transport system, wherein the method includes the following steps:

[0021] S1: Controls the rotational speed of the main drive. When it is determined that any of the constant pressure tool box compartments of the tool disc stops at the first direction position, the main drive is controlled to stop working.

[0022] S2: Control the hoisting device to hoist the materials in the main system to the transfer device located at the tool changing position, and control the transfer device to transport the materials to the connected atmospheric pressure tool box.

[0023] S3: Operators go to the atmospheric pressure tool box chamber through the transfer channel located at the tool change position to perform operations. After completing the operation, the operators exit back into the main system through the transfer channel located at the tool change position.

[0024] S4: Control the host drive to rotate, so that the tool turret rotates to the second angle and then stops working. Repeat steps S2-S3 to complete the tool inspection and replacement.

[0025] A method for changing cutterheads in the aforementioned tunnel boring machine cutter transport system, wherein the method includes the following steps:

[0026] S1: Control the rotation speed of the main drive. When it is determined that the transfer device with the horizontally fixed support is in the first direction position, control the main drive to stop working.

[0027] S2: Control the hoisting device to hoist the materials in the main system to the transfer device located at the tool changing position, and control the transfer device to transport the materials to the connected atmospheric pressure tool box.

[0028] S3: The operator goes through the transfer channel located at the tool change position to the connected atmospheric pressure tool box to perform the operation. After the operation is completed, the operator exits into the main system through the transfer channel located at the tool change position.

[0029] S4: Control the host drive to rotate, and stop working after the tool turret rotates to the third angle. Repeat steps S2-S3 to complete the tool inspection and replacement.

[0030] Regarding the aforementioned background technology, the shield machine cutter transport system provided by this invention has multiple sets of cutterhead legs, and the cutterhead legs are equipped with transfer channels, and the transfer channels are equipped with transfer devices. This application can transport materials to the atmospheric pressure cutter box chamber at one time through the transfer devices in multiple transfer channels. Moreover, the operators of this application can enter the atmospheric pressure cutter box chamber through multiple sets of transfer channels to inspect and replace the cutterhead cutters, which greatly shortens the cutter replacement time, improves the cutter replacement efficiency, and reduces production costs. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the isometric structure of the tunnel boring machine cutter transport system provided in the embodiments of this application;

[0032] Figure 2 This is a schematic diagram of the shaft side structure of the transfer device provided in the embodiments of this application;

[0033] Figure 3 This is a schematic diagram of the longitudinal section structure of the transfer device provided in the embodiments of this application;

[0034] Figure 4 This is a schematic diagram of the cross-sectional structure of the transfer device provided in the embodiments of this application;

[0035] Figure 5 This is a schematic diagram of the working process of the transfer device provided in the embodiments of this application;

[0036] Figure 6 This is a schematic diagram showing the distribution of the hoisting devices provided in the embodiments of this application;

[0037] Figure 7 This is a schematic diagram of the working state of the lifting component provided in the embodiments of this application;

[0038] Figure 8 This is a schematic diagram of the sliding sleeve installation structure of the support seat provided in the embodiments of this application;

[0039] Figure 9 This is a schematic diagram of the host drive working state when the support base is slidably sleeved according to an embodiment of this application;

[0040] Figure 10This is a schematic diagram of the host drive working state when the support base is slidably sleeved according to an embodiment of this application;

[0041] Figure 11 This is a schematic diagram of the support base fixing installation structure provided in the embodiments of this application;

[0042] Figure 12 This is a schematic diagram of the host drive's working state when the support base is fixed, as provided in the embodiments of this application.

[0043] Figure 13 This is a schematic diagram of the host drive's working state when the support base is fixed, as provided in the embodiments of this application.

[0044] in:

[0045] 1-Main system, 2-Cutterhead adapter ring, 3-Main drive, 4-Cutterhead support legs, 5-Transfer device, 6-Lifting device, 7-Working platform

[0046] 41-Transfer Channel

[0047] 411 - First tool change channel, 412 - Second tool change channel, 413 - Third tool change channel, 414 - Fourth tool change channel

[0048] 51-Circular slide rail, 52-Support base, 53-Transfer platform, 54-Pin shaft,

[0049] 511-First limiting hole,

[0050] 521-Slider, 522-Bearing, 523-Pressure block,

[0051] 531-Telescopic frame, 532-Shipping frame, 533-Counterweight block

[0052] 5311-Fixed frame, 5312-First stage pulley block, 5313-Base frame,

[0053] 5321-Secondary Pulley Block

[0054] 61-First hoisting device, 62-Second hoisting device, 63-Third hoisting device, 64-Fourth hoisting device

[0055] 621-Lifting assembly, 6211-Telescopic pole, 6212-Placement platform. Detailed Implementation

[0056] The core of this application is a cutter transport system for tunnel boring machines (TBMs) to improve the cutter changing efficiency of TBMs.

[0057] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0058] See Figures 1-13 A cutterhead transport system for a tunnel boring machine includes a main system 1, and further includes: a cutterhead adapter ring 2, rotatably mounted within the main system 1; a main drive 3, located within the main system 1, to rotate the cutterhead adapter ring 2; a soil chamber partition located inside the cutterhead adapter ring 2, wherein the soil chamber partition is fixedly mounted within the main system 1 to prevent soil from entering the main system 1; a cutterhead, fixedly mounted at the front end of the cutterhead adapter ring 2, the cutterhead having multiple sets of atmospheric pressure cutterhead chambers; and cutterhead support legs 4, multiple sets of cutterhead support legs 4 fixed between the cutterhead and the cutterhead adapter ring 2, the cutterhead support legs 4 having openings on them. The system includes a transfer channel 41 for the atmospheric pressure tool box, meaning that the tool disc support legs 4 are correspondingly arranged with the atmospheric pressure tool box. The transfer channel 41 is always connected to the atmospheric pressure tool box. Multiple sets of tool disc support legs 4 are arranged in a circumferential array on the tool disc connecting ring 2. A movable transfer device 5 is provided in the transfer channel 41. A hoisting device 6 is provided in the main system 1. Multiple sets of hoisting devices 6 are used to hoist materials in the main system 1 onto the transfer device 5. The materials are cutting tools and related maintenance tools. The transfer device 5 transports the materials to the atmospheric pressure tool box to complete the tool inspection and replacement of the tool disc.

[0059] The main drive 3 has a tool changing working position. When the main drive 3 is in the tool changing working position, the positions of the transfer device 5 and the hoisting device 6 correspond to each other. The hoisting device 6 hoists the material in the main system 1 onto the transfer device 5, and the transfer device 5 transports the material into the atmospheric pressure cutter box. When the main drive 3 is in the tunneling process, the transfer channel 41 rotates with the cutter head connecting ring 2. At this time, the transfer device 41 and the hoisting device 6 do not correspond.

[0060] The shield tunneling machine cutter transport system provided in this application has multiple sets of cutterhead support legs 4, and each cutterhead support leg 4 has a transfer channel 41. The transfer channel 41 is equipped with a transfer device 5. Materials in the main system 1 are hoisted onto the multiple sets of transfer devices 5 through multiple sets of hoisting devices 6. Since this application can transport materials to the atmospheric pressure cutter box chamber at one time through the transfer devices 5 in multiple transfer channels 41, and the operators of this application can enter the atmospheric pressure cutter box chamber through multiple sets of transfer channels 41 to inspect and replace the cutterhead cutters, the cutter replacement time is greatly shortened, the cutter replacement efficiency is improved, and the production cost is reduced.

[0061] Example 1 of the shield tunneling machine cutter transport system of this application:

[0062] As per the instruction manual Figure 2-3As shown, the transfer device 5 includes: an annular slide rail 51, comprising a first annular slide rail and a second annular slide rail with the same structure. The first annular slide rail is fixed inside the transfer channel 41, and the second annular slide rail is fixed inside the main drive 3. Therefore, the annular slide rail 51 rotates together with the transfer channel 41. The cross-sectional shape of the annular slide rail 51 is a concave groove. The first annular slide rail and the second annular slide rail are located on the same axis. By ensuring that the first annular slide rail and the second annular slide rail are located on the same axis, the distance between the first annular slide rail and the second annular slide rail is shortened, thereby reducing the material transportation time; and a support base 52, comprising a first support base and a second support base with the same structure. The first support base and the second support base are slidably sleeved on the first annular slide rail and the second annular slide rail, respectively. The transfer platform 53, consisting of a telescopic frame 531, a transport frame 532, and a counterweight 533, is mounted on two annular slide rails. The telescopic frame 531 is symmetrically fixed to the upper surfaces of the first and second support seats. In other words, the telescopic frame 531 includes a first telescopic frame and a second telescopic frame with the same structure. The first and second telescopic frames are symmetrically fixed to the upper surface of the support seat 52. The transport frame 532 is slidably mounted on the telescopic frame 531. The counterweight 533 is fixedly mounted at the lower end of the telescopic frame 531, thereby increasing the self-weight of the transfer platform 53. When all the cutter head legs 4 rotate relative to the host system 1, the transfer platform 53 rotates along the annular track 51 under the action of gravity, so that the transfer platform 53 is always horizontally positioned on the annular guide rail 51.

[0063] In other words, during the tunneling process, the transfer channel 41 rotates with the cutterhead connecting ring 2, and the transfer platform 53 rotates along the ring track 51 under the action of gravity, so that the transfer platform 53 is always horizontally positioned on the ring guide rail 51. Therefore, when the main drive 3 is in the cutter changing position, multiple sets of transfer platforms 53 are always horizontally positioned in the transfer channel 41, which facilitates the transportation of materials and prevents the materials from falling off the transfer platform 53 due to the tilt of the transfer platform 53, thus preventing damage to the materials.

[0064] As per the instruction manual Figure 3As shown, the support base 52 includes: a slider 521, with a flat upper end and an arc-shaped lower end. The lower end of the slider 521 is provided with a groove that mates with the annular slide rail 51. Since the cross-sectional shape of the annular slide rail 51 is a concave groove, the inner walls of the annular slide rail 51 form protrusions on both sides, which then mate with the groove provided at the lower end of the slider 521 to achieve sliding mounting of the slider 521 on the annular slide rail 51; the radial centerline of the slider 521 is provided with a through-hole receiving cavity, and the number of receiving cavities is not less than 5; bearing 5 22, located within the receiving cavity, the lower end of the receiving cavity of this application is provided with a stepped hole, so that the bearing 522 is located within the stepped hole, and the circumferential surface of the bearing 522 is in contact with the inner wall of the annular slide rail 51; the pressure block 523 is fixedly located within the receiving cavity, and the fixed connection is a detachable connection. The pressure block 523 is installed on the aforementioned slider 521 by bolts, so as to facilitate the subsequent replacement of the bearing 522. The lower end of the pressure block 523 is provided with a first slot, which is used to fit the bearing 522 so that the bearing 522 is radially and axially limited.

[0065] In other words, the lower end of the slider 521 of this application is provided with a groove for slidingly fitting onto the annular slide rail 51, so that the support seat 52 can rotate relative to the annular slide rail 51. The bearing 522 installed in the slider 521 of this application fits against the annular slide rail 51, reducing the wear between the slider 521 and the annular slide rail 51, and reducing the friction between the block 521 and the annular slide rail 51, making it easier for the support seat 52 to rotate on the annular slide rail 51. The pressure block 523 provided in this application fits against the bearing 522, so that the bearing 522 is fixed on the slider 521.

[0066] As per the instruction manual Figure 4 As shown, the above-mentioned transfer device 5 also includes a pin 54. The side wall of the annular slide rail 51 is provided with a first limiting hole 511, and the side wall of the slider 521 facing the first limiting hole 511 is provided with a second limiting hole. The first limiting hole and the second limiting hole are connected to each other. The pin 54 is provided in the first limiting hole 511 and the second limiting hole so that the annular slide rail 51 and the slider 521 remain relatively stationary.

[0067] In other words, when the main drive 3 is in the tool changing position, the hoisting device 6 is used to hoist the material in the main system 1 to the transfer device 5. The transfer device 5 transports the material to the atmospheric pressure tool box. In this application, the pin 54 is set in the first limit hole 511 and the second limit hole so that the annular slide rail 51 and the slider 521 remain relatively stationary, thereby preventing the transfer device 5 from rotating during the material transportation process, which would cause the material on the transfer device 5 to become unstable and fall off.

[0068] As per the instruction manual Figure 3-4As shown, the telescopic frame 531 includes: a fixed frame 5311, which is an L-shaped plate including a base plate and side plates. The fixed frames 5311 are symmetrically arranged and fixed to the upper surface of the support base 52. That is, the fixed frame 5311 in this application includes a first fixed frame and a second fixed frame. The first fixed frame and the second fixed frame are opposite to each other and welded to the upper surface of the support base 52. That is, the side plate of the first fixed frame is on the left edge of the base plate, and the side plate of the second fixed frame is on the right edge of the base plate. The inner wall of the side plate of the fixed frame 5311 is provided with a first-stage pulley group 5312. That is, the inner wall of the side plates of the first fixed frame and the second fixed frame facing each other is provided with a first-stage pulley group 5312. A counterweight 533 is fixedly installed on the fixed frame. The lower surface of 5311, that is, the counterweight 533 can be symmetrically fixed to the lower surface of the fixed frame 5311 in this application; the base frame 5313 is a square column, and the two sides of the base frame 5313 are respectively provided with a first receiving groove and a second receiving groove. The first receiving groove and the second receiving groove both extend along the length direction of the base frame 5313. The first receiving groove is sleeved on the first-stage pulley block 5312 so that the base frame 5313 can slide on the fixed frame 5311; the width between the edges of the two base frames 5313 near the fixed frame 5311 is the first width value, that is, the first width value between the left edge of the left base frame 5313 and the right edge of the right base frame 5313 is W1.

[0069] In other words, the base frame 5313 of this application can slide on the fixed frame 5311. That is, the power source of this application can be set on the first-stage pulley block 5312. The rotary driver is connected to the first-stage pulley block 5312, so that the first-stage pulley block 5312 rotates so that the base frame 5313 can slide on the fixed frame 5311. The power source of this application is not only the one mentioned above. Others that can make the base frame 5313 slide on the fixed frame 5311 can also be the power source of this application, such as hydraulic cylinders and electric push rods to drive the base frame 5313 to slide on the fixed frame 5311.

[0070] As per the instruction manual Figure 4-5 As shown, the transport rack 532 is provided with a second slot on the side facing the base frame 5313. A secondary pulley group 5321 is symmetrically arranged in the second slot. The secondary pulley group 5321 is installed in the second receiving slot, and the base frame 5313 is attached to the second slot so that the transport rack 532 can slide on the base frame 5313.

[0071] In other words, the transport rack 532 of this application is provided with second slots on both the left and right sides. The second slots extend along the length of the transport rack 532. The side walls of the second slots on both sides are provided with secondary pulley groups 5321. The secondary pulley groups 5321 on both sides are located in the second receiving slot of the base frame 5313, and the right end of the base frame 5313 is inserted into the second slot, so that the base frame 5313 can better support the transport rack, so that the transport rack 532 can slide on the base frame 5313. The transport rack 532 of this application can be connected to a hydraulic cylinder or an electric push rod to make the transport rack 532 slide on the base frame 5313. The upper end of the transport rack 532 of this application is provided with a V-shaped groove. By providing the V-shaped groove, the material located on the V-shaped groove is prevented from shaking. This application sets the extension distance of the transfer device 5 towards the main drive 3 to be L1 and the extension distance of the transfer device 5 towards the pressure chamber of the knife box to be L2.

[0072] As per the instruction manual Figure 6 As shown, the host system 1 is equipped with a first hoisting device 61, a second hoisting device 62, a third hoisting device 63, and a fourth hoisting device 64 in the first, second, third, and fourth directions, respectively. Specifically, the first hoisting device 61 is located due east (right side) within the host system 1; the second hoisting device 62 is located due north (above) within the host system 1; the third hoisting device 63 is located due west (left side) within the host system 1; and the fourth hoisting device 64 is located due south (below) within the host system 1. This embodiment has 8 sets of tool head support legs, meaning there are 8 transfer channels 41. When the host drive 3 is in the tool changing position, the transfer channels 41 in the first, second, third, and fourth directions are respectively the first tool changing channel 411, the second tool changing channel 412, the third tool changing channel 413, and the fourth tool changing channel 414. The tool channel 413 and the fourth tool changing channel 414 correspond one-to-one with the first hoisting device 61, the second hoisting device 62, the third hoisting device 63, and the fourth hoisting device 64, respectively. The hoisting device 6 then hoists the materials in the main system 1 to the transfer device 5 in the tool changing channel for transportation. The main system 1 is equipped with a working platform 7. The first hoisting device 61 and the third hoisting device 63 are installed on the left and right sides of the working platform 7. The first hoisting device 61 and the third hoisting device 63 are both located inside the first tool changing channel 411 and the third tool changing channel 413, that is, the first hoisting device 61 is located on the left side of the first tool changing channel 411, and the third hoisting device 63 is located on the left side of the third tool changing channel 413. The second hoisting device 62 is installed on the top inner wall of the main system 1 and is located below the second tool changing channel 412. The fourth hoisting device 64 is located on the lower surface of the working platform 7 and is located above the fourth tool changing channel 414.

[0073] As per the instruction manual Figure 5-7 As shown, the first hoisting device 61 and the third hoisting device 63 are traveling cranes, and the fourth hoisting device 64 is an electric hoist. The first hoisting device 61, the third hoisting device 63, and the fourth hoisting device 64 hoist materials on the work platform 7 to the transfer devices 5 in the first tool change channel 411, the third tool change channel 413, and the fourth tool change channel 414, respectively, along the west, east, and south directions. The second hoisting device 62 includes an electric hoist and a lifting assembly 621. The lifting assembly 621 includes a telescopic rod 6211 and a placement platform 6212 located at the upper end of the telescopic rod 6211. The width W2 between the two telescopic rods 6211 is greater than the width W1 between the edges of the two base frames 5313, ensuring that the base frame 5313 and the transport frame 532 can smoothly pass through the channel between the two telescopic rods 6211 of the lifting assembly 621. The electric hoist is started first to hoist the materials onto the lifting assembly 621. The lifting assembly 621 is then activated to raise the material to a height of H1, ensuring that the lowest position of the lifted material on the cross-section is higher than the height of the corresponding transport frame 532. The transfer device 53 extends a set distance L1 along the direction of the main drive 3, and then slowly lowers the lifting assembly by a distance S1 to a height of H2. The lifting assembly 621 ensures that the material is stably supported by the transport frame 532. The lifting assembly 621 then retracts and lowers by a distance S2, ensuring that there is no interference between the transfer device 5 and the lifting assembly 621 when the material is transported forward. Alternatively, the placement platform 6212 of the lifting assembly 621 can retract along the left and right sides. The transfer device 5 extends forward by a set distance L2 to transport the material into the atmospheric pressure knife box. At the same time, the lifting assembly 621 continues to descend and retract to the initial position before stopping. In order to facilitate the hoisting of the material onto the transfer device 5, the main drive 201 is provided with an atmospheric pressure chamber corresponding to the number of transfer channels 41.

[0074] This embodiment also provides a cutter replacement method for a tunnel boring machine (TBM) cutter transport system. Using the TBM cutter transport system described above, the cutter replacement method includes the following steps:

[0075] S1: Controls the rotational speed of the main drive 3. When any of the constant pressure tool box compartments of the tool turret is in the first direction position, the main drive 3 is stopped, as per the instruction manual. Figure 9 As shown, when the transfer channel 41 connected to the first tool box compartment D of this application stops in the due east direction, that is, when the transfer channel 41 of the first tool box compartment D of this application is the first tool changing channel 411, the control host drive 3 stops working; the technical solution of this application to control the host drive 3 to stop working when determining that any atmospheric pressure tool box compartment of the tool turret is located in the first direction position is the prior art, such as the use of proximity sensors, therefore the use of proximity sensors will not be described in detail in this application;

[0076] S2: Control the first hoisting device 61, the second hoisting device 62, the third hoisting device 63 and the fourth hoisting device 64 to hoist the materials on the work platform 7 to the transfer device 5 in the first tool changing channel 411, the second tool changing channel 412, the third tool changing channel 413 and the fourth tool changing channel 414 respectively, and control the transfer device 5 to transport the materials to the corresponding atmospheric pressure tool box.

[0077] S3: Operators enter the corresponding atmospheric pressure toolbox chambers through the first tool change channel 411, the second tool change channel 412, the third tool change channel 413 and the fourth tool change channel 414 respectively to carry out operations. After completing the operations, the operators exit back to the work platform 7 through the first tool change channel 411, the second tool change channel 412, the third tool change channel 413 and the fourth tool change channel 414 respectively.

[0078] S4: Control the host drive to rotate the tool turret to the second angle and then stop working. Repeat steps S2-S3 to complete the tool inspection and replacement. Since the tool turret support legs 4 in this application are in 8 groups and arranged in a circumferential array, the interval angle between each group of tool turret support legs 4 is 45°. That is, control the host drive 3 to rotate counterclockwise by 45° and then stop working. At this time, the second tool box is located on the first tool changing channel 411, as shown in the attached manual. Figure 10 As shown; it can also control the host drive 3 to rotate 45° clockwise and then stop working.

[0079] In step S2, before the first hoisting device 61, the second hoisting device 62, the third hoisting device 63 and the fourth hoisting device 64 are started, the pin 54 is placed in the first limiting hole 11 and the second limiting hole so that the transfer device 5 remains relatively stationary relative to the transfer channel 41.

[0080] Controlling the first hoisting device 61, the third hoisting device 63, and the fourth hoisting device 64 to hoist the material on the work platform 7 onto the transfer device 5 within the first tool change channel 411, the third tool change channel 413, and the fourth tool change channel 414, respectively, includes the following steps:

[0081] Control the first hoisting device 61, the third hoisting device 63 and the fourth hoisting device 64 to hoist the materials on the work platform 7 to the transfer device 5 in the first tool changing channel 411, the third tool changing channel 413 and the fourth tool changing channel 414 respectively along the first direction, the third direction and the fourth direction;

[0082] As per the instruction manual Figure 6As shown, the first hoisting device 61 hoists the material on the work platform 7 to the transfer device 5 in the first tool changing channel 411 along the due east direction, the third hoisting device 63 hoists the material on the work platform 7 to the transfer device 5 in the third tool changing channel 413 along the due west direction, and the fourth hoisting device 64 hoists the material on the work platform 7 to the transfer device 5 in the fourth tool changing channel 414 along the due south direction.

[0083] Controlling the second hoisting device 62 to hoist the material on the work platform 7 to the transfer device 5 in the second tool change channel 412 includes the following steps:

[0084] S21. The control transfer device 5 is located in the second tool changing channel 412;

[0085] S22. Control the electric hoist to lift the material on the work platform 7 onto the lifting assembly 621 in the due north direction;

[0086] S23. Control the lifting assembly 621 to raise the first height H1, extend the transfer device 5 a set distance L1 in the direction toward the main drive 3 and place it in the channel of the lifting assembly 621, and lower the lifting assembly 621 to a second height S1 so that the material of the lifting assembly 621 is placed on the transfer device 5.

[0087] S24. Control the lifting assembly 621 to descend to the third height S2 to avoid the lifting assembly 621 interfering with the transfer device 5 transporting materials to the atmospheric pressure knife box.

[0088] After the lifting assembly 621 raises the material to a first height H1, the lowest height of the material on the lifting assembly 621 is higher than the height of the corresponding transport frame 532. The channel width of the lifting assembly 621 is set to a second width W2, which is greater than the first width W1 between the edges of the two base frames 5313, so that the base frame 5313 and the transport frame 532 of the loading device 5 can pass through the channel of the lifting assembly 621.

[0089] Example 2 of the shield tunneling machine cutter transport system of this application:

[0090] The difference between this embodiment 2 and embodiment 1 is that in embodiment 1, the support base 52 is slidably sleeved on the annular slide rail 51. In this embodiment, the support base 52 is fixed on the annular slide rail 51.

[0091] In this embodiment, the support base 52 is fixed to the annular slide rail 51 at a horizontal and inclined first angle. This embodiment of the support base has 8 sets of cutter head legs 4, meaning there are 8 sets of transfer channels 41, namely the first transfer channel, the second transfer channel, the third transfer channel, the fourth transfer channel, the fifth transfer channel, the sixth transfer channel, the seventh transfer channel, and the eighth transfer channel. The transfer channel located due north is designated as the first transfer channel, and the one located closer to the right is designated as the second transfer channel. The support bases 52 located in the first, third, fifth, and seventh transfer channels are all horizontally fixed to the annular slide rail 51. The support bases 52 located in the second, fourth, sixth, and eighth transfer channels are all fixed to the annular slide rail 51 at a 45° inclination in the horizontal direction. This can be a 45° leftward or a 45° rightward inclination in the horizontal direction; in this embodiment, it is a 45° rightward inclination. (See attached specification). Figure 11 As shown.

[0092] This embodiment also provides a cutter replacement method for a tunnel boring machine (TBM) cutter transport system. Using the TBM cutter transport system described above, the cutter replacement method includes the following steps:

[0093] S1: Control the rotational speed of the main drive 3, determine if the atmospheric pressure toolbox connected to any of the first, third, fifth, or seventh transfer channels is stopped in the first direction position, and control the main drive 3 to stop working, as per the instruction manual. Figure 12 As shown, the first transfer channel connected to the first toolbox compartment D in this application stops in the due east direction, that is, the first transfer channel of the first toolbox compartment D in this application is the first tool changing channel 411, and the control host drive 3 stops working; the technical solution of this application to determine that the atmospheric pressure toolbox compartment connected to any of the first transfer channel, the third transfer channel, the fifth transfer channel, and the seventh transfer channel stops in the first direction position and the control host drive 3 stops working is the prior art, such as the use of proximity sensors, therefore the use of proximity sensors will not be described in detail in this application;

[0094] S2: Control the first hoisting device 61, the second hoisting device 62, the third hoisting device 63 and the fourth hoisting device 64 to hoist the materials on the work platform 7 to the transfer device 5 in the first tool changing channel 411, the second tool changing channel 412, the third tool changing channel 413 and the fourth tool changing channel 414 respectively, and control the transfer device 5 to transport the materials to the corresponding atmospheric pressure tool box.

[0095] S3: Operators enter the corresponding atmospheric pressure toolbox chambers through the first tool change channel 411, the second tool change channel 412, the third tool change channel 413 and the fourth tool change channel 414 respectively to carry out operations. After completing the operations, the operators exit back to the work platform 7 through the first tool change channel 411, the second tool change channel 412, the third tool change channel 413 and the fourth tool change channel 414 respectively.

[0096] S4: Control the host drive 3 to rotate the tool turret to the third angle and then stop working. Repeat steps S2-S3 to complete the tool inspection and replacement. Since the tool turret support legs 4 in this application are in 8 groups and arranged in a circumferential array, the interval angle between each group of tool turret support legs 4 is 45°. Also, the support base 52 in this application is fixedly installed with a 45° rightward tilt in the horizontal direction. That is, control the host drive 3 to rotate counterclockwise by 45° and then stop working. At this time, the second tool box is located on the first tool changing channel 411, as shown in the attached manual. Figure 13 As shown; when the support base 52 located in the second, fourth, sixth and eighth transfer channels is fixedly installed with a horizontal tilt of 45° to the left, it can also be controlled to rotate the host drive 3 clockwise by 45° and then stop working.

[0097] Controlling the first hoisting device 61, the third hoisting device 63, and the fourth hoisting device 64 to hoist the material on the work platform 7 onto the transfer device 5 within the first tool change channel 411, the third tool change channel 413, and the fourth tool change channel 414, respectively, includes the following steps:

[0098] Control the first hoisting device 61, the third hoisting device 63 and the fourth hoisting device 64 to hoist the materials on the work platform 7 to the transfer device 5 in the first tool changing channel 411, the third tool changing channel 413 and the fourth tool changing channel 414 respectively along the first direction, the third direction and the fourth direction;

[0099] As per the instruction manual Figure 6 As shown, the first hoisting device 61 hoists the material on the work platform 7 to the transfer device 5 in the first tool changing channel 411 along the due east direction, the third hoisting device 63 hoists the material on the work platform 7 to the transfer device 5 in the third tool changing channel 413 along the due west direction, and the fourth hoisting device 64 hoists the material on the work platform 7 to the transfer device 5 in the fourth tool changing channel 414 along the due south direction.

[0100] Controlling the second hoisting device 62 to hoist the material on the work platform 7 to the transfer device 5 in the second tool change channel 412 includes the following steps:

[0101] S21. The control transfer device 5 is located in the second tool changing channel 412;

[0102] S22. Control the electric hoist to lift the material on the work platform 7 onto the lifting assembly 621 in the due north direction;

[0103] S23. Control the lifting assembly 621 to raise the first height H1, extend the transfer device 5 a set distance L1 toward the main drive 3 and place it in the channel of the lifting assembly 621, and lower the lifting assembly to the second height S1 so that the material of the lifting assembly 621 is placed on the transfer device 5.

[0104] S24. Control the lifting assembly 621 to descend to the third height S2 to avoid the lifting assembly 621 interfering with the transfer device 5 transporting materials to the atmospheric pressure knife box.

[0105] After the lifting assembly 621 raises the material to a first height H1, the lowest height of the material on the lifting assembly 621 is higher than the height of the corresponding transport frame 532. The channel width of the lifting assembly 621 is set to a second width W2, which is greater than the first width W1 between the edges of the two base frames 5313, so that the base frame 5313 and the transport frame 532 of the loading device 5 can pass through the channel of the lifting assembly 621.

[0106] The specific steps of the transportation method of the above-mentioned tunnel boring machine cutter transport system can be found in the description of the tunnel boring machine cutter transport system above, and will not be elaborated here.

[0107] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from another, and do not necessarily require or imply any such actual relationship or order between these entities.

[0108] The present invention provides a detailed description of a cutter transport system for tunnel boring machines. Specific examples have been used to illustrate the principles and implementation methods of the invention. The descriptions of these embodiments are merely illustrative of the method and core ideas of the invention. It should be noted that those skilled in the art can make various improvements and modifications to the invention without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A cutter transport system for a tunnel boring machine, comprising a main unit system (1), characterized in that, Also includes: The tool head adapter ring (2) is rotatably disposed within the host system (1); The host drive (3) is located within the host system (1) to make the cutter head adapter ring (2) rotate; The cutter head is fixed at the front end of the cutter head adapter ring (2), and the cutter head is provided with an atmospheric pressure cutter box chamber; The cutter head support leg (4) is fixed between the cutter head and the cutter head adapter ring (2). The cutter head support leg (4) is provided with a transfer channel (41) that connects to the atmospheric pressure cutter box chamber. A movable transfer device (5) is provided in the transfer channel (41). The hoisting device (6) is fixed in the main system (1) and is used to hoist the materials in the main system (1) onto the transfer device (5); The host drive (3) has a tool changing working position. When the host drive (3) is in the tool changing working position, the hoisting device (6) hoists the material in the host system (1) onto the transfer device (5). The transfer device (5) transports the material to the atmospheric pressure tool box to complete the tool maintenance and replacement of the tool disc. The transfer device (5) includes: The annular slide rail (51) includes a first annular slide rail and a second annular slide rail with the same structure. The first annular slide rail is fixed in the transfer channel (41), and the second annular slide rail is fixed in the host drive (3). The first annular slide rail and the second annular slide rail are located on the same axis. Support base (52) includes a first support base and a second support base with the same structure, wherein the first support base and the second support base are respectively disposed on the first annular slide rail and the second annular slide rail; The transfer platform (53) includes a telescopic frame (531), a transport frame (532), and a counterweight (533). The telescopic frame (531) is symmetrically fixed at the upper ends of the first support base and the second support base. The transport frame (532) is slidably disposed on the telescopic frame (531). The counterweight (533) is fixedly disposed at the lower end of the telescopic frame (531). The support base (52) is slidably mounted on the annular slide rail (51). When all the cutter head legs (4) rotate relative to the main machine system (1), the transfer platform (53) rotates along the annular slide rail (51) under the action of gravity, so that the transfer platform (53) is always horizontally positioned on the annular slide rail (51); the support base (52) includes: The slider (521) has a flat upper end and an arc lower end. The lower end of the slider (521) is provided with a groove that cooperates with the annular slide rail (51). The radial center line of the slider (521) is provided with a through cavity. A bearing (522) is disposed in the receiving cavity, and the circumferential surface of the bearing (522) is in contact with the inner wall of the annular slide rail (51); A pressure block (523) is fixedly disposed in the receiving cavity. The lower end of the pressure block (523) is provided with a first slot, which is used to fit the bearing (522) so that the bearing (522) is fixed in the receiving cavity. The telescopic frame (531) includes a base frame (5313), and a first receiving groove and a second receiving groove are respectively provided on both sides of the base frame (5313). The first receiving groove and the second receiving groove both extend along the length direction of the base frame (5313). Each of the shipping racks (532) is provided with a second slot on the side facing the base frame (5313). A secondary pulley assembly (5321) is symmetrically arranged in the second slot. The secondary pulley assembly (5321) is installed in the second receiving slot, and the base frame (5313) is fitted into the second slot so that the shipping rack (532) can slide on the base frame (5313).

2. The shield tunneling machine cutter transport system according to claim 1, characterized in that: The transfer device also includes a pin (54), the side wall of the annular slide rail (51) is provided with a first limiting hole (511), the side wall of the slider (521) facing the first limiting hole (511) is provided with a second limiting hole, the first limiting hole and the second limiting hole are connected to each other, and the pin (54) is provided in the first limiting hole (511) and the second limiting hole so that the annular slide rail (51) and the slider (521) remain relatively stationary.

3. The shield tunneling machine cutter transport system according to claim 1, characterized in that, The support base (52) is fixed to the annular slide rail (51) at a horizontal and inclined first angle.

4. The shield tunneling machine cutter transport system according to claim 1, characterized in that, The telescopic frame (531) includes: The fixing frame (5311) is an L-shaped plate. The fixing frame (5311) is symmetrically arranged and fixed to the upper end face of the support base (52). The inner wall of the side plate of the fixing frame (5311) is provided with a first-stage pulley group (5312), and the counterweight (533) is fixedly arranged on the lower surface of the fixing frame (5311). The base frame (5313) is a square column, and the first receiving groove is fitted on the first-stage pulley group (5312) so that the base frame (5313) can slide on the fixed frame (5311). The width between the edges of the base frame (5313) on both sides near the fixed frame (5311) is the first width value.

5. The shield tunneling machine cutter transport system according to claim 1, characterized in that: The host system (1) is equipped with a first hoisting device (61), a second hoisting device (62), a third hoisting device (63), and a fourth hoisting device (64) in the first, second, third, and fourth directions, respectively. The transfer channels in the first, second, third, and fourth directions are the first tool changing channel (411), the second tool changing channel (412), the third tool changing channel (413), and the fourth tool changing channel (414). The host system is equipped with a working platform (7). The first hoisting device (61) and the third hoisting device (63) are related to... The work platform (7) is symmetrically arranged along its radial centerline, and the first hoisting device (61) and the third hoisting device (63) are both located inside the first tool changing channel (411) and the third tool changing channel (413); the second hoisting device (62) is installed on the top inner wall of the host system (1), and the second hoisting device (62) is located below the second tool changing channel (412); the fourth hoisting device (64) is located on the lower surface of the work platform (7), and the fourth hoisting device (64) is located above the fourth tool changing channel (414).

6. A method for changing cutterheads in a tunnel boring machine cutter transport system according to claim 1, wherein, The tool changing method includes the following steps: S1: Control the rotation speed of the main drive (3). When it is determined that any atmospheric pressure tool box of the tool disc is located in the first direction position, control the main drive (3) to stop working. S2: Control the hoisting device (6) to hoist the material in the main system (1) to the transfer device (5) located at the tool changing position, and control the transfer device (5) to transport the material to the connected atmospheric pressure tool box. S3: The operator goes to the atmospheric pressure toolbox chamber through the transfer channel (41) located at the tool changing position to perform the operation. After the operation is completed, the operator exits into the host system (1) through the transfer channel (41) located at the tool changing position. S4: Control the main drive (3) to rotate, so that the cutter head rotates to a second angle and then stops working. Repeat steps S2-S3 to complete the inspection and replacement of the cutter.

7. A method for changing cutterheads in a tunnel boring machine cutter transport system according to claim 3, wherein, The tool changing method includes the following steps: S1: Control the rotation speed of the main drive (3). When it is determined that the transfer device (5) with the support base (52) horizontally fixed is in the first direction position, control the main drive (3) to stop working. S2: Control the hoisting device (6) to hoist the material in the main system (1) to the transfer device (5) located at the tool changing position, and control the transfer device (5) to transport the material to the connected atmospheric pressure tool box. S3: The operator goes to the atmospheric pressure toolbox chamber through the transfer channel (41) located at the tool changing position to perform the operation. After the operation is completed, the operator exits into the host system (1) through the transfer channel (41) located at the tool changing position. S4: Control the main drive (3) to rotate, so that the cutter head rotates to the third angle and then stops working. Repeat steps S2-S3 to complete the inspection and replacement of the cutter.

Images