A method for lateral translation of a tunnel boring machine in a closed underground small space

Abstract

The application relates to a shield machine transverse translation construction method for closing a small space under a well, and relates to the technical field of tunnel construction.The method comprises the following steps: S1, shield machine fixing; S2, receiving bracket sliding setting; S3, shield machine transverse translation; S4, shield machine placement completion; and S5, rear matching trailer translation.The shield machine is moved to the receiving bracket and welded and fixed, then the receiving bracket is lifted to a certain height through multiple groups of lifting assemblies, then the transverse steel rails are laid at the bottom of the receiving bracket, then the receiving bracket is placed on the transverse steel rails through the lifting hydraulic cylinders, the pushing hydraulic cylinders are fixedly installed on the transverse steel rails, the pushing hydraulic cylinders and the steel supports with different lengths are cooperated with each other, so that the shield machine is slid to a specified position along the transverse steel rails, the multiple groups of transverse steel rails are slid against the receiving bracket, the probability of deviation of the shield machine in the moving process is reduced, and the construction efficiency of the shield machine transverse translation is improved.

Description

Technical Field

[0001] This application relates to the technical field of tunnel construction, and in particular to a method for lateral translation construction of a shield tunneling machine in a small enclosed underground space. Background Technology

[0002] With social development and progress, tunnel boring machines (TBMs) play an indispensable role in municipal subway construction. Due to the improvement and perfection of urbanization, TBM construction in urban areas often faces challenges such as limited space and severe environmental constraints. As a result, dual-line subway construction has emerged, with a TBM hoisting shaft usually set up for the left and right lines. This has added some difficulties for engineering construction technicians and has also led to the emergence of more and more different TBM shaft lateral movement construction techniques.

[0003] Currently, the most common method for the internal lateral movement of tunnel boring machines (TBMs) is the steel plate sliding method. This involves pouring concrete onto a base slab, then laying thick steel plates on top. Before tunnel breakthrough, a receiving bracket to support the bottom of the TBM is welded and fixed onto the thick steel plates. The TBM is then fixed onto the receiving bracket. The receiving bracket is then cut and slid across the thick steel plates. Hydraulic cylinders and their supports are welded onto the thick steel plates, and these cylinders propel the receiving bracket and the TBM laterally. Finally, by continuously cutting and re-welding the hydraulic cylinders and their supports, the position of the hydraulic cylinders is constantly changed, ultimately moving the receiving bracket and the TBM to the designated location.

[0004] However, due to the high coefficient of friction between the tunnel boring machine and the thick steel plate during lateral movement, and the poor welding environment caused by the underground space during the continuous cutting and welding of the hydraulic cylinder and its support, the welding quality is not high. This makes it easy for the tunnel boring machine to deviate during the movement, requiring subsequent angle adjustment. At the same time, the laying and subsequent dismantling of the thick steel plate are difficult, which greatly reduces the construction efficiency of the tunnel boring machine's lateral movement. Summary of the Invention

[0005] In order to reduce the probability of tunnel boring machine (TBM) deviating during movement and improve the construction efficiency of TBM lateral movement, this application provides a method for lateral translation of TBM in a closed underground small space.

[0006] This application provides a method for lateral translation of a tunnel boring machine in a closed underground small space, which adopts the following technical solution:

[0007] A method for lateral translation construction of a tunnel boring machine in a closed underground small space includes the following steps:

[0008] S1. Tunnel Boring Machine Fixing: Set up a receiving bracket at the starting point of the base plate, then move the tunnel boring machine to the designated position of the receiving bracket and lock it to the receiving bracket.

[0009] S2. Receiving bracket sliding setting: The receiving bracket is lifted to a certain height by the lifting component, and then a transverse steel rail is laid at the bottom of the receiving bracket. The lifting component places the receiving bracket on the transverse steel rail and allows the receiving bracket to slide on the transverse steel rail.

[0010] S3. Shield machine lateral movement: A push hydraulic cylinder is installed on the lateral movement rail. The push hydraulic cylinder cooperates with steel supports of different lengths and causes the hydraulic cylinder to push the receiving bracket to move along the lateral movement rail to the designated position.

[0011] S4. Tunnel boring machine placement completed: The receiving bracket is lifted to a certain height by the lifting assembly and the transverse rail at the bottom of the receiving bracket is removed. Then the receiving bracket is placed on the designated base plate.

[0012] S5. Rear trailer lateral movement: After the tunnel boring machine is placed, the rear trailer is moved laterally along the transverse rail to the designated position by an electric hoist.

[0013] By adopting the above technical solution, the tunnel boring machine (TBM) is moved onto the receiving bracket and welded in place. Then, multiple sets of lifting components are used to raise the receiving bracket to a certain height. A transverse rail is then laid at the bottom of the receiving bracket. A lifting hydraulic cylinder is used to place the receiving bracket onto the transverse rail. A pushing hydraulic cylinder is fixedly installed on the transverse rail. By cooperating with the pushing hydraulic cylinder and steel supports of different lengths, the TBM is slid along the transverse rail to the designated position. The sliding contact between the multiple sets of transverse rails and the receiving bracket reduces the probability of deviation during TBM movement and improves the construction efficiency of the transverse movement of the TBM.

[0014] Furthermore, after the hydraulic cylinder pushes the receiving bracket to move and reaches its maximum stroke, the hydraulic cylinder retracts and a steel support is placed between the hydraulic cylinder and the receiving bracket, with both ends of the steel support abutting against the hydraulic cylinder and the receiving bracket respectively. The lengths of the multiple sets of steel supports are different and are integer multiples of the maximum stroke of the hydraulic cylinder.

[0015] By adopting the above technical solution, the push hydraulic cylinder is fixed on the transverse rail. By replacing the steel support of different lengths between the push hydraulic cylinder and the receiving bracket, the receiving bracket is slowly pushed away from the push hydraulic cylinder.

[0016] Furthermore, when the multiple sets of push hydraulic cylinders retract, a portion of the push hydraulic cylinders retract first, then a steel support is placed between the retracted push hydraulic cylinders and the receiving bracket, and finally the remaining push hydraulic cylinders retract and a steel support is placed between the push hydraulic cylinders and the receiving bracket.

[0017] By adopting the above technical solution, when the hydraulic cylinder is retracted, in order to prevent the receiving bracket from slipping and causing the steel support to be unable to be installed, a portion of the hydraulic cylinder is retracted first, and then a new steel support is replaced between the hydraulic cylinder and the receiving bracket. The new steel support is used for support, and then the remaining hydraulic cylinder is retracted and the remaining steel support is replaced. This improves the accuracy of installation.

[0018] Furthermore, the steel supports of different lengths are composed of different numbers of support members, the support members including:

[0019] A supporting steel body is slidably mounted on a transverse steel rail;

[0020] Connecting blocks, two sets of connecting blocks are respectively set on opposite ends of the supporting steel body, and adjacent supporting steel bodies are connected to each other by the connecting blocks;

[0021] The limiting block is bolted to the adjacent connecting block at both ends and slides against the transverse rail. The limiting block is used to prevent the two connecting blocks from moving away from the transverse rail.

[0022] By adopting the above technical solution, after the first retraction of the hydraulic cylinder, the support is placed between the hydraulic cylinder and the receiving bracket. The connecting block increases the contact area between the supporting steel body and the hydraulic cylinder or the receiving bracket. Each time the hydraulic cylinder retracts, a set of support is added between the hydraulic cylinder and the receiving bracket. Adjacent support members are fixedly connected by the connecting block. At the same time, the limiting block presses the two sets of support members against the transverse rail, thereby reducing the probability of deformation and arching between the two sets of supporting steel bodies due to excessive pressure.

[0023] Furthermore, a tensioning assembly is provided on the side of the receiving bracket away from the pushing hydraulic cylinder to assist the receiving bracket in sliding on the transverse rail. The tensioning assembly includes:

[0024] A housing, which is slidably mounted on a transverse rail;

[0025] A stretching hydraulic cylinder, wherein the stretching hydraulic cylinder is mounted on the housing and its movable end is connected to the receiving bracket;

[0026] A clamping hydraulic cylinder is mounted on the housing and is used to clamp the housing onto the transverse rail.

[0027] By adopting the above technical solution, the clamping hydraulic cylinder clamps the housing onto the transverse rail while the rope-pulling hydraulic cylinder is in an extended state. When the pushing hydraulic cylinder pushes the receiving bracket to slide, the stretching hydraulic cylinder retracts to assist in pulling the receiving bracket to slide on the transverse rail. At the same time, the strokes of the stretching hydraulic cylinder and the pushing hydraulic cylinder are the same. When the stretching hydraulic cylinder retracts to its minimum, the clamping hydraulic cylinder releases the transverse rail, and the stretching hydraulic cylinder extends to drive the housing to slide. After the stretching hydraulic cylinder reaches its maximum stroke, the clamping hydraulic cylinder clamps the housing onto the transverse rail, thereby achieving long-distance pulling of the receiving bracket.

[0028] Furthermore, the receiving bracket is provided with a lubrication mechanism for reducing the coefficient of friction between the receiving bracket and the transverse rail, the lubrication mechanism comprising:

[0029] Fuel supply box, wherein the fuel supply box is mounted on the receiving bracket;

[0030] A clamping plate is provided on the receiving bracket and slides against the transverse rail. An oil supply groove is provided on the clamping plate. The oil supply groove is connected to the inside of the oil supply box and discharges the lubricating oil in the oil supply box into the space between the clamping plate and the transverse rail.

[0031] A pressurizing assembly is mounted on a receiving bracket and is used to pressurize the oil supply box. The pressurizing assembly pressurizes the lubricating oil in the oil supply box into the space between the clamping plate and the transverse rail through the oil supply groove.

[0032] By adopting the above technical solution, when the receiving bracket slides on the transverse rail, the lubricating oil in the oil supply box is pressed into the gap between the abutment plate and the transverse rail through the oil supply groove by the pressurizing component, thereby reducing the coefficient of friction between the receiving bracket and the transverse rail.

[0033] Furthermore, the pressurization component includes:

[0034] An extrusion plate, which is slidably disposed in the oil supply box and used to squeeze the lubricating oil in the oil supply box into the oil supply groove;

[0035] A driving component, which is mounted on a receiving bracket and is used to drive the extrusion plate to slide within the oil supply box.

[0036] By adopting the above technical solution, the driving component drives the extrusion plate to slide in the oil supply box, thereby pressing the lubricating oil in the oil supply box into the oil supply groove, and at the same time increasing the probability of lubricating oil entering the gap between the abutment plate and the transverse rail.

[0037] Furthermore, the transverse rail includes:

[0038] The rail body is pre-laid on the base plate and is designed to facilitate the lateral movement of the bracket;

[0039] The first extension section is set on the side of the rail body near the starting point. The lifting component will lift the receiving bracket and the tunnel boring machine to a certain height and then lay the first extension section at the starting point.

[0040] The second extension section is located on the side of the rail body away from the first extension section. After the receiving bracket is moved to the designated position, the second extension section can be removed and the receiving bracket can be placed on the designated base plate.

[0041] By adopting the above technical solution, the rail body is pre-embedded in the designated position. After the lifting component raises the receiving bracket to a certain height, the first extension section is fixedly installed on the base plate. The first extension section is connected to the rail body and is an extension of the rail body. When the receiving bracket reaches the end point, the lifting component raises the receiving bracket to a certain height and then removes the second extension section, so as to facilitate the placement of the receiving bracket in the designated position.

[0042] Furthermore, the lifting component includes:

[0043] Support blocks, multiple sets of the support blocks are welded and installed on both sides of the tunnel boring machine;

[0044] Steel piers, which are pre-installed on the base plate below the support blocks;

[0045] A lifting hydraulic cylinder is mounted on a steel pier and is used to push the support block to slide away from the steel pier.

[0046] By adopting the above technical solution, when it is necessary to lift the receiving bracket off the base plate, the lifting hydraulic cylinder is fixed on the steel pier, and then the lifting hydraulic cylinder is pressed against the lower surface of the support block, so as to make the receiving bracket and the tunnel boring machine slide away from the base plate.

[0047] Furthermore, the rear trailer is equipped with a configuration to reduce the probability of lateral movement and rollover. The configuration consists of multiple water tanks and water injected into the water tanks.

[0048] By adopting the above technical solution, since the weight difference between the two sides of the rear trailer is large, a certain amount of water is injected into the water tank to make the weight of the two sides of the rear trailer closer to equal, thereby reducing the probability of the rear trailer overturning when moving laterally.

[0049] In summary, this application includes at least one of the following beneficial technical effects:

[0050] 1. By moving the tunnel boring machine (TBM) onto the receiving bracket and welding it in place, the receiving bracket is then raised to a certain height using multiple sets of lifting hydraulic cylinders. A first extension section connected to the rail body is then laid at the bottom of the receiving bracket. The lifting hydraulic cylinders place the receiving bracket on the first extension section, and the pushing hydraulic cylinders are fixedly installed on the first extension section. Through the cooperation of the pushing hydraulic cylinders and steel supports of different lengths, the TBM is slid along the transverse rails to the designated position. The sliding contact between the multiple sets of transverse rails and the receiving bracket reduces the probability of deviation during TBM movement and improves the construction efficiency of the TBM's transverse movement.

[0051] 2. By placing a set of support components between the push hydraulic cylinder and the receiving bracket after each stroke of the push hydraulic cylinder, the receiving bracket can be slid on the transverse rail. At the same time, the push hydraulic cylinder and the tension hydraulic cylinder work together to drive the receiving bracket to slide on the transverse rail, thereby reducing the probability of the tunnel boring machine overturning.

[0052] 3. When the receiving bracket slides on the transverse rail, the driving component drives the extrusion plate to slide in the oil supply box, thereby extruding the lubricating oil in the oil supply box into multiple sets of oil supply grooves. This allows the lubricating oil to enter the gap between the clamping plate and the transverse rail through the oil supply grooves, thereby reducing the coefficient of friction between the receiving bracket and the transverse rail and facilitating the sliding of the receiving bracket on the transverse rail. Attached Figure Description

[0053] Figure 1 This is a schematic diagram of the lateral translation structure of Embodiment 1 of this application;

[0054] Figure 2 This is a schematic diagram of the transverse steel rail, the pushing hydraulic cylinder, and the receiving bracket structure of Embodiment 1 of this application;

[0055] Figure 3 This is a schematic diagram of the transverse steel rail, the pushing hydraulic cylinder, and the receiving bracket structure of Embodiment 2 of this application;

[0056] Figure 4 yes Figure 3 Enlarged diagram of section A in the middle;

[0057] Figure 5 This is a schematic diagram of the transverse steel rail, the pushing hydraulic cylinder, and the receiving bracket structure of Embodiment 3 of this application;

[0058] Figure 6 yes Figure 5 Enlarged schematic diagram of section B.

[0059] Reference numerals: 1. Tunnel boring machine; 2. Receiving bracket; 3. Transverse rail; 31. Rail body; 32. First extension section; 33. Second extension section; 4. Lifting assembly; 41. Support block; 42. Steel pier; 43. Lifting hydraulic cylinder; 5. Pushing hydraulic cylinder; 51. Hydraulic cylinder support point; 52. Steel support; 6. Support component; 61. Support steel body; 62. Connecting block; 63. Limiting block; 7. Tensioning assembly; 71. Housing; 72. Tensioning hydraulic cylinder; 73. Clamping hydraulic cylinder; 8. Lubrication mechanism; 81. Oil supply box; 82. Anchor plate; 83. Pressurizing assembly; 831. Extrusion plate; 832. Driving component. Detailed Implementation

[0060] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0061] This application discloses a method for lateral translation construction of a tunnel boring machine in a closed underground small space.

[0062] Example 1

[0063] Reference Figure 1 and Figure 2 A method for lateral translation construction of a tunnel boring machine in a small enclosed underground space includes the following steps:

[0064] S1. Shield machine 1 fixed: Set up receiving bracket 2 at the starting point of the base plate, and then move shield machine 1 to the designated position of receiving bracket 2 and lock it to the receiving bracket 2.

[0065] S2. Sliding setting of receiving bracket 2: The receiving bracket 2 is lifted to a certain height by the lifting component 4, and then a transverse steel rail 3 is laid at the bottom of the receiving bracket 2. The lifting component 4 places the receiving bracket 2 on the transverse steel rail 3 and allows the receiving bracket 2 to slide on the transverse steel rail 3.

[0066] S3, Shield machine 1 lateral movement: A push hydraulic cylinder 5 is set on the lateral movement rail 3. The push hydraulic cylinder 5 cooperates with steel supports 52 of different lengths and causes the push hydraulic cylinder 5 to push the receiving bracket 2 to move along the lateral movement rail 3 to the designated position.

[0067] S4. The shield machine 1 is placed: The receiving bracket 2 is lifted to a certain height by the lifting component 4 and the transverse rail 3 at the bottom of the receiving bracket 2 is removed. Then the receiving bracket 2 is placed on the designated base plate.

[0068] S5. Rear trailer translation: After the tunnel boring machine 1 is placed, the rear trailer is moved laterally along the transverse rail 3 to the designated position by an electric hoist.

[0069] Reference Figure 1A screw conveyor is installed between the tunnel boring machine 1 and the rear trailer. In order to prevent the screw conveyor from affecting the tunnel boring machine 1 when it is moved horizontally, the tunnel boring machine 1 is first separated from the rear trailer. Then, the screw conveyor installed on the tunnel boring machine 1 is removed from the station in a closed shaft environment. After being separated from the tunnel boring machine 1, the screw conveyor is placed flat on the segment car and the segment car is pushed to a reasonable position. Then, the screw conveyor is welded and fixed, and finally pushed into the tunnel.

[0070] Reference Figure 2 The transverse rail 3 includes a rail body 31, a first extension section 32 and a second extension section 33. The rail body 31 is pre-laid on the base plate and is convenient for receiving the transverse movement of the bracket 2. The first extension section 32 and the second extension section 33 are respectively detachably installed on opposite ends of the rail body 31. The first extension section 32 and the second extension section 33 are both extensions of the rail body 31.

[0071] Reference Figure 1 and Figure 2 Before the tunnel is completed, the bottom plate is cleaned and leveled as a whole. The bottom plate is divided into three areas: the starting point, the lateral movement area, and the ending point. The receiving bracket 2 is fixedly installed at the starting point. Sleepers are laid in advance in the lateral movement area and the ending point. Then, the rail body 31 and the second extension section 33 are fixedly installed on multiple sets of sleepers. The second extension section 33 is connected to the rail body 31 and is an extension of the rail body 31 in the length direction. The length direction of the rail body 31 is the same as the lateral movement direction of the shield machine 1.

[0072] Reference Figure 1 and Figure 2 The tunnel boring machine 1 is pushed to the designated position on the receiving bracket 2 by air thrust. Then, the tunnel boring machine 1 is welded and fixed at the connection between the receiving bracket 2 and the two sides, so that the receiving bracket 2 and the tunnel boring machine 1 are connected as a whole. The lifting assembly 4 includes a support block 41, a steel pier 42 and a lifting hydraulic cylinder 43. Multiple sets of support blocks 41 are provided and welded to both sides of the tunnel boring machine 1. The steel pier 42 is pre-installed on the base plate and is located directly below the support block 41. The lifting hydraulic cylinder 43 is fixedly installed on the upper surface of the steel pier 42 and the movable end of the lifting hydraulic cylinder 43 is pressed against the lower surface of the support block 41. Multiple sets of lifting assemblies 4 are fixedly installed on the tunnel boring machine 1. The tunnel boring machine 1 and the receiving bracket 2 are lifted off the base plate by the joint action of multiple sets of lifting assemblies 4.

[0073] Reference Figure 1 and Figure 2After multiple lifting components 4 lift the tunnel boring machine 1 and the receiving bracket 2 off the ground, sleepers are laid on the bottom plate of the receiving bracket 2. Then, multiple sets of first extension sections 32 are fixedly installed on the multiple sets of sleepers. The first extension section 32 is fixedly connected to the corresponding rail body 31. The first extension section 32 is an extension of the rail body 31 in the length direction. After the first extension section 32 is installed, No. 2 lithium-based grease is applied to the surface of the first extension section 32, the rail body 31 and the second extension section 33. After the No. 2 lithium-based grease is applied, multiple lifting hydraulic cylinders 43 descend to place the receiving bracket 2 on the first extension section 32, so that the receiving bracket 2 can slide on the multiple sets of first extension sections 32. The No. 2 lithium-based grease reduces the friction coefficient of the receiving bracket 2 sliding on the multiple sets of transverse rails 3.

[0074] Reference Figure 1 and Figure 2 A hydraulic cylinder support point 51 is fixedly installed on the first extension section 32 by external hexagonal bolts. The cylinder body of the push hydraulic cylinder 5 is fixedly installed on the hydraulic cylinder support point 51, and the movable end of the push hydraulic cylinder 5 is pressed against the side wall of the receiving bracket 2. In use, multiple sets of push hydraulic cylinders 5 are started synchronously to push the receiving bracket 2 from the first extension section 32 to the rail body 31. When the push hydraulic cylinder 5 reaches its maximum stroke, the push hydraulic cylinder 5 retracts to its original position. Then, a steel support 52 is placed between the push hydraulic cylinder 5 and the receiving bracket 2. The steel support 52 can slide on the transverse rail 3. The two ends of the steel support 52 are pressed against the movable end of the push hydraulic cylinder 5 and the side of the receiving bracket 2 near the push hydraulic cylinder 5, respectively. There are multiple sets of steel supports 52 at the same position, and the lengths of the multiple sets of steel supports 52 are different. The lengths of the multiple sets of steel supports 52 are integer multiples of the maximum stroke of the push hydraulic cylinder 5.

[0075] Reference Figure 1 and Figure 2 The specific selection process is as follows: after the hydraulic cylinder 5 is pushed back for the first time, a steel support 52 with a length equal to the maximum stroke of the hydraulic cylinder 5 is selected. After the hydraulic cylinder 5 is pushed back for the second time, the first steel support 52 is removed and replaced with a new steel support 52 with a length equal to twice the maximum stroke of the hydraulic cylinder 5. This process is repeated until the receiving bracket 2 is finally pushed to the designated position.

[0076] Reference Figure 1 and Figure 2Because the shield machine 1 has a large mass, in order to facilitate the sliding of the shield machine 1, multiple sets of push hydraulic cylinders 5 work together to push the receiving bracket 2 to slide on the transverse rail 3. In order to prevent the receiving bracket 2 from sliding when the push hydraulic cylinders 5 retract, when the multiple sets of push hydraulic cylinders 5 retract, a portion of the push hydraulic cylinders 5 retract first, and then a steel support 52 is placed between the retracted push hydraulic cylinders 5 and the receiving bracket 2. Then the remaining push hydraulic cylinders 5 retract, and then a steel support 52 is placed between the retracted push hydraulic cylinders 5 and the receiving bracket 2. Finally, they work together to push the receiving bracket 2 to slide on the transverse rail 3.

[0077] Reference Figure 1 and Figure 2 After the receiving bracket 2 moves to the end point, the lifting component 4 lifts the receiving bracket 2 to a certain height, then removes the second extension section 33 at the bottom of the receiving bracket 2, and finally places the receiving bracket 2 on the base plate, and finally moves the tunnel boring machine 1 to the next tunnel entrance.

[0078] Reference Figure 1 Before the tunnel boring machine (TBM) 1 breaks through, counterweights are installed on the lighter side of the rear supporting trailer where the weight difference is greater, to make the weight on both sides of the rear supporting trailer nearly equal. The principle of translating the rear supporting trailer is the same as that of the TBM 1. Three segment cars are placed above the rails on the station floor. The rails of the rear supporting trailer are laid by using 300×300 H-beams with 3cm steel plates underneath before welding and fixing. The rails of the locomotive are laid by using 400×400 H-beams with two 4cm steel plates underneath before welding and fixing. The laying of the rails and... Inside the tunnel, the rear-mounted trailer and the locomotive rails are connected at the same height. A 50cm gap should be reserved above the H-beams near the tunnel side to prevent the joints from being suspended when the rails are overlapped inside the tunnel. After the shield machine 1 main unit is hoisted, the processed rear-mounted translation support is dragged to the left line. The tunnel locomotive is used to push the rear-mounted trailer onto the translation support, and two 5t electric hoists are used for lateral translation. The configuration component in this embodiment consists of multiple water tanks and water injected into the water tanks. The amount of water injected is controlled to make the weight on both sides of the rear-mounted trailer approximately equal.

[0079] The working principle of Embodiment 1 of this application is as follows:

[0080] By moving the tunnel boring machine 1 onto the receiving bracket 2 and welding it in place, and then using multiple sets of lifting hydraulic cylinders 43 to lift the receiving bracket 2 to a certain height, a first extension section 32 connected to the rail body 31 is laid at the bottom of the receiving bracket 2. The lifting hydraulic cylinders 43 then place the receiving bracket 2 onto the first extension section 32, and the pushing hydraulic cylinder 5 is fixedly installed on the first extension section 32. By cooperating with the pushing hydraulic cylinder 5 and steel supports 52 of different lengths, the tunnel boring machine 1 is slid along the transverse rail 3 to the designated position. By using multiple sets of transverse rails 3 to slide and abut against the receiving bracket 2, the probability of the tunnel boring machine 1 deviating during its movement is reduced, and the construction efficiency of the transverse movement of the tunnel boring machine 1 is improved.

[0081] Example 2

[0082] Reference Figure 3 and Figure 4 The difference between this embodiment and embodiment 1 is that the steel supports 52 of different lengths are composed of different numbers of support members 6. The support member 6 includes a support steel body 61, a connecting block 62, and a limiting block 63. The support steel body 61 can be slidably installed on the transverse rail 3. In this embodiment, the support steel body 61 is an H-beam. When in use, the support steel body 61 is snapped onto the transverse rail 3. There are two sets of connecting blocks 62. The two sets of connecting blocks 62 are respectively fixedly installed on opposite ends of the support steel body 61. The length of the support steel body 61 plus the thickness of the two sets of connecting blocks 62 equals the maximum stroke of the hydraulic cylinder 5. When the two sets of support members 6 are pressed against each other, they are pressed against each other through the connecting blocks 62 and fixedly connected by bolts. The two ends of the limiting block 63 are respectively locked to the two adjacent connecting blocks 62 by bolts. The limiting block 63 slides against the transverse rail 3. The limiting block 63 is used to prevent the two connecting blocks 62 from moving away from the transverse rail 3, reducing the probability of arching and deformation when the two sets of support members 6 are pressed against each other.

[0083] Reference Figure 3 and Figure 4On the side of the receiving bracket 2 away from the pushing hydraulic cylinder 5, there is also a tensioning assembly 7 to assist the receiving bracket 2 in sliding on the transverse rail 3. The tensioning assembly 7 includes a housing 71, a tensioning hydraulic cylinder 72, and a clamping hydraulic cylinder 73. The housing 71 is slidably mounted on the transverse rail 3, and the cylinder body of the tensioning hydraulic cylinder 72 is fixedly mounted on the housing 71. The piston end of the tensioning hydraulic cylinder 72 is fixedly mounted on the receiving bracket 2. The maximum stroke of the tensioning hydraulic cylinder 72 is equal to the stroke of the pushing hydraulic cylinder 5, and the tensioning force of the tensioning hydraulic cylinder 72 is less than the thrust of the pushing hydraulic cylinder 5. The clamping hydraulic cylinder 73 is fixedly mounted on the housing 71 and is used to clamp the housing 71 to the transverse rail 3. Specifically, before use, the tensioning hydraulic cylinder is positioned such that... At its maximum stroke, the clamping hydraulic cylinder 73 clamps onto the transverse rail 3. When the pushing hydraulic cylinder 5 pushes the receiving bracket 2, the stretching hydraulic cylinder 72 moves to pull the receiving bracket 2 to slide on the transverse rail 3. When the pushing hydraulic cylinder 5 reaches its maximum stroke, the clamping hydraulic cylinder 73 releases its clamp on the transverse rail 3. Then, the pulling rope hydraulic cylinder extends to its maximum stroke to drive the housing 71 to slide on the transverse rail 3. When the pulling rope hydraulic cylinder reaches its maximum stroke, the clamping hydraulic cylinder 73 clamps onto the transverse rail 3 and fixes the housing 71. After the support member 6 is added, the above steps are repeated to make the receiving bracket 2 slide along the transverse rail 3, thereby improving the stability of the receiving bracket 2 during sliding.

[0084] The working principle of Embodiment 2 of this application is as follows:

[0085] After the hydraulic cylinder 5 pushes the receiving bracket 2 forward by one stroke, a set of support members 6 is placed between the hydraulic cylinder 5 and the receiving bracket 2 to facilitate the sliding of the receiving bracket 2 on the transverse rail 3. At the same time, the hydraulic cylinder 5 and the tensioning hydraulic cylinder 72 work together to drive the receiving bracket 2 to slide on the transverse rail 3, reducing the probability of the tunnel boring machine 1 overturning.

[0086] Example 3

[0087] Reference Figure 5 and Figure 6 The difference between this embodiment and embodiment 1 is that the receiving bracket 2 is provided with a lubrication mechanism 8 for reducing the friction coefficient between the receiving bracket 2 and the transverse rail 3. The lubrication mechanism 8 includes an oil supply box 81, a clamping plate 82, and a pressurizing component 83. The oil supply box 81 is fixedly installed on the receiving bracket 2. The clamping plate 82 is fixedly installed on the bottom of the receiving bracket 2 and slides against the upper surface of the transverse rail 3. The clamping plate 82 has multiple sets of oil supply grooves, all of which are connected to the inside of the oil supply box 81. The multiple sets of oil supply grooves discharge the lubricating oil in the oil supply box 81 into the space between the clamping plate and the transverse rail 3, thereby reducing the friction coefficient between the receiving bracket 2 and the transverse rail 3. The lubricating oil in this embodiment is No. 2 lithium-based grease lubricating oil.

[0088] Reference Figure 5 and Figure 6 The pressurizing component 83 is mounted on the receiving bracket 2. The pressurizing component 83 pressurizes the inside of the oil supply box 81, thereby forcing the lubricating oil in the oil supply box 81 through the oil supply groove between the pressing plate 82 and the transverse rail 3. The pressurizing component 83 includes a pressing plate 831 and a driving component 832. The pressing plate 831 is slidably disposed inside the oil supply box 81 and presses the lubricating oil in the oil supply box 81 into the oil supply groove. The driving component 832 is fixedly mounted on the receiving bracket 2 and is used to drive the pressing plate 831 to supply oil. The shield machine 1 slides inside the box 81. Due to the large weight of the shield machine 1, the gap between the clamping plate 82 and the transverse rail 3 is small. At the same time, the viscosity of the No. 2 lithium-based grease lubricating oil is medium, and it cannot flow well by gravity alone. The driving component 832 drives the pressing plate 831 to move down, thereby pressing the lubricating oil in the oil supply box 81 into the gap between the clamping plate 82 and the transverse rail 3, and finally achieving the effect of reducing the friction coefficient between the receiving bracket 2 and the transverse rail 3. In this embodiment, the driving component 832 is an electric push rod.

[0089] The working principle of Embodiment 3 of this application is as follows:

[0090] When the receiving bracket 2 slides on the transverse rail 3, the driving component 832 drives the pressing plate 831 to slide in the oil supply box 81, thereby squeezing the lubricating oil in the oil supply box 81 into multiple sets of oil supply grooves. This allows the lubricating oil to enter the gap between the pressing plate 82 and the transverse rail 3 through the oil supply grooves, thereby reducing the coefficient of friction between the receiving bracket 2 and the transverse rail 3 and facilitating the sliding of the receiving bracket 2 on the transverse rail 3.

[0091] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A shield machine transverse translation construction method for closing a small space downhole, characterized in that: Comprise the following steps: S1, shield machine (1) fixed: set receiving bracket (2) on the starting point of the bottom plate, then move the shield machine (1) to the designated position of receiving bracket (2) and lock connection with receiving bracket (2); S2, receiving bracket (2) slip setting: the receiving bracket (2) is lifted to a certain height by lifting assembly (4), then the cross rail (3) is laid at the bottom of the receiving bracket (2), the lifting assembly (4) is placed on the cross rail (3) and the receiving bracket (2) can slide on the cross rail (3); S3, shield machine (1) transverse: set the push hydraulic cylinder (5) on the cross rail (3), the push hydraulic cylinder (5) cooperates with steel support (52) of different length and makes the hydraulic cylinder push receiving bracket (2) to move to the designated position along the cross rail (3); S4, shield machine (1) placement is completed: the receiving bracket (2) is lifted to a certain height by the lifting assembly (4) and the cross rail (3) at the bottom of the receiving bracket (2) is removed, then the receiving bracket (2) is placed on the designated bottom plate; S5, the rear matching trailer translation: after the shield machine (1) is placed, the rear matching trailer is driven by the electric hoist to move to the designated position along the cross rail (3); The push hydraulic cylinder (5) pushes the receiving bracket (2) to move, and after the push hydraulic cylinder (5) reaches the maximum stroke, the push hydraulic cylinder (5) is retracted, the steel support (52) is placed between the push hydraulic cylinder (5) and the receiving bracket (2), and the two ends of the steel support (52) are respectively abutted on the push hydraulic cylinder (5) and the receiving bracket (2), the lengths of the steel supports (52) in multiple groups are different and are integer multiples of the maximum stroke of the push hydraulic cylinder (5); The steel supports (52) of different lengths are composed of different numbers of support pieces (6), and the support piece (6) comprises: Support steel body (61), the support steel body (61) is slidably arranged on the cross rail (3); Connecting block (62), two groups of connecting blocks (62) are arranged on the opposite ends of the support steel body (61), respectively, and the adjacent two support steel bodies (61) are connected by the connecting block (62); Limiting block (63), the limiting block (63) is locked on the adjacent connecting block (62) by bolts at both ends and is slidably abutted on the cross rail (3), and the limiting block (63) is used for preventing the two connecting blocks (62) from moving away from the cross rail (3).

2. The method according to claim 1, wherein the shield machine is transversely moved in the small space of the closed shaft. When multiple push hydraulic cylinders (5) are retracted, a part of the push hydraulic cylinders (5) are retracted first, then the steel support (52) is placed between the retracted push hydraulic cylinder (5) and the receiving bracket (2), and finally the remaining push hydraulic cylinders (5) are retracted and the steel support (52) is placed between the push hydraulic cylinder (5) and the receiving bracket (2).

3. The method according to claim 1, wherein the method is characterized in that: The receiving bracket (2) is provided with a stretching assembly (7) on the side away from the push hydraulic cylinder (5), which assists the receiving bracket (2) to slide on the cross rail (3), and the stretching assembly (7) comprises: A shell (71) is slidingly arranged on the transverse moving rail (3); A stretching hydraulic cylinder (72) is arranged on the shell (71) and the active end is connected with the receiving bracket (2); A clamping hydraulic cylinder (73) is arranged on the shell (71), and the clamping hydraulic cylinder (73) is used for clamping the shell (71) on the transverse moving rail (3).

4. The method of claim 1, wherein: A lubricating mechanism (8) for reducing the friction coefficient between the receiving bracket (2) and the transverse moving rail (3) is arranged on the receiving bracket (2), and the lubricating mechanism (8) comprises: An oil supply box (81) is arranged on the receiving bracket (2); A pressing plate (82) is arranged on the receiving bracket (2) and is slidingly pressed against the transverse moving rail (3), and an oil supply groove is formed in the pressing plate (82) and is in communication with the inside of the oil supply box (81) and discharges the lubricating oil in the oil supply box (81) between the pressing plate (82) and the transverse moving rail (3); A pressurizing assembly (83) is arranged on the receiving bracket (2) and is used for pressurizing the inside of the oil supply box (81), and the pressurizing assembly (83) pressurizes the lubricating oil in the oil supply box (81) into the oil supply groove between the pressing plate (82) and the transverse moving rail (3).

5. The method according to claim 4, wherein: The pressurizing assembly (83) comprises: An extrusion plate (831) is slidingly arranged in the oil supply box (81) and is used for extruding the lubricating oil in the oil supply box (81) into the oil supply groove; A driving member (832) is arranged on the receiving bracket (2) and is used for driving the extrusion plate (831) to slide in the oil supply box (81).

6. The method of claim 1, wherein: The transverse moving rail (3) comprises: A rail body (31) is previously laid on the bottom plate and facilitates the transverse movement of the receiving bracket (2); A first extension section (32) is arranged on the rail body (31) near the starting point, and the lifting assembly (4) lifts the receiving bracket (2) and the shield tunneling machine (1) to a certain height and then lays the first extension section (32) at the starting point; A second extension section (33) is arranged on the rail body (31) away from the first extension section (32), and the receiving bracket (2) can take out the second extension section (33) after moving to a designated position and then place the receiving bracket (2) on the designated bottom plate.

7. The method of claim 1, wherein: The lifting assembly (4) comprises: A plurality of support blocks (41) are welded on both sides of the shield tunneling machine (1); A steel pier (42) is previously arranged on the bottom plate below the support block (41); A lifting hydraulic cylinder (43) is arranged on the steel pier (42) and is used for pushing the support block (41) to slide away from the steel pier (42).

8. The method of claim 1, wherein: The rear matching trailer is provided with a configuration member for reducing the transverse moving and rollover probability, and the configuration member is composed of a plurality of water tanks and water filled in the water tanks.

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