Construction method for horizontal transportation of shield

Abstract

The invention discloses a construction method for shield horizontal transportation, which relates to the technical field of shield material transportation, and comprises the following steps: measuring and calculating the width of a trolley running track and the size of a concrete lining block by adopting a field measurement method to obtain the size of a material transportation trolley; based on the size of the material conveying trolley, the material conveying trolley is manufactured, the welded part is polished after manufacturing is completed, and the material conveying trolley is obtained; the welding points of the material transporting trolley are detected through ultrasonic nondestructive flaw detection, and the stable material transporting trolley is obtained; the winch is installed between the double-beam stand columns of the shield tunneling machine, the height is set to avoid collision with the erector, power support is provided for stabilizing the material conveying trolley, and the material conveying device with the traction capacity is obtained. The winch is connected with the stable material conveying trolley through a steel wire rope, the steel wire rope with the corresponding diameter is calculated and selected, and a complete conveying system capable of safely and efficiently conveying materials is obtained; and the winch is started, and the stable material conveying trolley loaded with the materials is pulled to the construction area of the shield tunneling machine.

Description

Technical Field

[0001] The present invention relates to the technical field of shield material transportation, and particularly to a construction method for horizontal transportation of a shield tunneling machine. Background Art

[0002] Shield material transportation refers to the process of efficiently and safely transporting the required building materials (such as precast concrete lining blocks, grouting materials, etc.) from the ground or a certain centralized storage point to the construction area where the shield tunneling machine is located during the construction of a shield tunneling method tunnel. This process is one of the important links to ensure the continuous and stable progress of shield construction.

[0003] In the field of shield material transportation, when there is no dedicated material transportation shaft at the construction site, the traditional method of using motor vehicle trains to transport lining blocks and other materials cannot be implemented. And in the case where motor vehicle trains cannot be used, it can only rely on manual material transfer. This method not only has low efficiency, but also greatly increases the safety risk of operations, which is not conducive to achieving the construction period objectives and safety objectives of shield operations. Summary of the Invention

[0004] In view of the above existing problems, the present invention is proposed.

[0005] Therefore, the present invention provides a construction method for horizontal transportation of a shield tunneling machine to solve the problem that when there is no dedicated material transportation shaft at the construction site, the traditional method of using motor vehicle trains to transport lining blocks and other materials cannot be implemented. And in the case where motor vehicle trains cannot be used, it can only rely on manual material transfer. This method not only has low efficiency, but also greatly increases the safety risk of operations, which is not conducive to achieving the construction period objectives and safety objectives of shield operations.

[0006] To solve the above technical problems, the present invention provides the following technical solutions:

[0007] The present invention provides a construction method for horizontal transportation of a shield tunneling machine, which includes:

[0008] Adopt on-site measurement methods to measure and calculate the width of the trolley running track and the size of the concrete lining block to obtain the size of the material transport trolley;

[0009] Based on the size of the material transport trolley, manufacture the material transport trolley. After completion, grind the welded parts to obtain the material transport trolley;

[0010] Use ultrasonic non-destructive testing to detect the welded joints of the material transport trolley to obtain a stable material transport trolley;

[0011] Install a winch between the double-beam columns of the shield tunneling machine and set the height to avoid collision with the segment erector to provide power support for the stable material transport trolley to obtain a material transport device with traction capacity;

[0012] Connect the winch and the stable material transport trolley with a wire rope, calculate and select a wire rope with an appropriate diameter to obtain a complete transport system that can safely and efficiently transport materials.

[0013] Start the winch and tow the stable material transport trolley loaded with materials to the construction area of the shield machine, and pull the empty trolley back to the starting shaft after unloading the materials to achieve safe and efficient material transportation.

[0014] As a preferred embodiment of the construction method for horizontal transportation of the shield machine according to the present invention, wherein: the width of the trolley running track and the size of the concrete lining block are measured and calculated by on-site measurement methods to obtain the size of the material transport trolley. The specific steps are as follows:

[0015] Precisely measure the actual width of the track and the length of the concrete lining block with a laser rangefinder.

[0016] Introduce an evaluation function to calculate the optimal trolley size.

[0017] Based on the above formula, obtain the optimal size of the material transport trolley.

[0018] As a preferred embodiment of the construction method for horizontal transportation of the shield machine according to the present invention, wherein: based on the size of the material transport trolley, manufacture the material transport trolley, and after completion, polish the welded parts to obtain the material transport trolley. The specific steps are as follows:

[0019] Based on the size of the material transport trolley, use 200H steel and 10# channel steel for on-site reinforcement and production.

[0020] Four track wheels are arranged at the bottom, and two tie devices are arranged at the front end. The size is 3m * 1.2m * 0.35m.

[0021] Cut and assemble the materials according to the design size to form the frame of the material transport trolley.

[0022] The heaviest material required for the branch line shield construction of this section is the concrete precast lining body. Each lining body is 0.97t, and 3 pieces are transported each time.

[0023] Calculate the strength and size of the material transport trolley until the construction requirements are met.

[0024] As a preferred embodiment of the construction method for horizontal transportation of the shield machine according to the present invention, wherein: the welded joints of the material transport trolley are detected by ultrasonic non-destructive testing to obtain a stable material transport trolley. The specific steps are as follows:

[0025] Select an ultrasonic flaw detector with a frequency range between 1MHz and 10MHz, and calibrate the equipment with a standard test block with known defects.

[0026] Before ultrasonic flaw detection, clean the welded parts to remove oil, rust and other impurities;

[0027] Move the probe evenly on the weld seam and perform detection according to the predetermined scanning path. During the detection process, record the echo signal intensity at each position;

[0028] Introduce a quality evaluation function Q to evaluate the quality of the weld seam;

[0029] After the detection is completed, collect all the detection data and analyze it. For any unqualified weld seam, mark the specific position and record the detailed defect information, and generate a detailed detection report according to the analysis results.

[0030] As a preferred solution of the construction method for the horizontal transportation of the shield tunneling machine described in the present invention, wherein: install the winch between the double-beam columns of the shield tunneling machine and set the height to avoid collision with the erector, providing power support for the stable material handling trolley to obtain a material transportation device with traction ability. The specific steps are as follows:

[0031] Install the winch between the double-beam columns of the shield tunneling machine and set the height to 50 cm;

[0032] Weld a 50 cm * 50 cm platform using 10# channel steel and 10 mm steel plates between the double-beam columns of the shield tunneling machine for fixing the winch platform;

[0033] Lift the winch and install it on the platform and weld the base firmly to the platform;

[0034] During the platform design process, set the rated pulling force of the winch to 30 KN, the rated speed of the wire rope to 8 m / min, the diameter of the wire rope The rope capacity of the drum is 150 m, the motor model is YZR160L-8, the power is 7.5 kW, and the overall dimensions are 1050 * 1110 * 660 mm;

[0035] Before being officially put into use, conduct a load test on the winch and gradually increase the load until the maximum design load is reached;

[0036] After the test is completed, organize relevant personnel to conduct a comprehensive acceptance of the platform to ensure that each link meets the design standards and safety specifications.

[0037] As a preferred solution of the construction method for the horizontal transportation of the shield tunneling machine described in the present invention, wherein: connect the winch and the stable material handling trolley with a wire rope, calculate and select the wire rope with the corresponding diameter to obtain a complete transportation system that can transport materials safely and efficiently. The specific steps are as follows:

[0038] Based on the maximum weight P carried by the material handling trolley max and the specific conditions of the working environment;

[0039] Introduce a safety assessment function to select an appropriate wire rope diameter;

[0040] The calculated value of A is the minimum diameter of the required wire rope;

[0041] Fix one end of the wire rope of the winch to the front pulling ear of the material transport trolley, and wind the remaining wire rope regularly on the winch drum;

[0042] After the connection is completed, adjust the tension of the wire rope appropriately so that it is neither too loose nor too tight;

[0043] Test the no-load operation and light-load operation of the test platform, and observe the working state of the wire rope and the response of the winch.

[0044] As a preferred solution of the construction method for the shield horizontal transportation described in the present invention, wherein: start the winch and tow the stable material transport trolley loaded with materials to the shield machine construction area, and pull the empty trolley back to the starting shaft after unloading the materials to achieve safe and efficient transportation of materials. The specific steps are as follows:

[0045] Start the winch for preliminary testing, check the motor and the wire rope, and tow the material transport trolley loaded with materials;

[0046] During the towing process, monitor the parameters of the winch;

[0047] The parameters of the winch include motor current, temperature change, and wire rope tension;

[0048] When the material transport trolley reaches the shield machine construction area, stop the winch operation, and ensure that the trolley has come to a complete stop before performing the material unloading operation;

[0049] After the material unloading is completed, start the winch again and slowly tow the empty material transport trolley back to the starting shaft.

[0050] As a preferred solution of the construction method for the shield horizontal transportation described in the present invention, wherein: the frame of the material transport trolley uses 200H-shaped steel as the main beam and 10# channel steel as the auxiliary support structure;

[0051] The distance between the main beams is 3m, and the distance between the channel steels is 0.5m, forming a stable rectangular frame structure;

[0052] Four track wheels with a diameter of 15 cm are arranged at the bottom to ensure smooth operation on the track;

[0053] Two pulling devices are arranged at the front end for connecting the wire rope to ensure uniform force during the towing process.

[0054] As a preferred embodiment of the construction method for the horizontal transportation of the shield tunneling machine in the present invention, the following applies: The winch platform is welded by 10# channel steel, with dimensions of 50 cm × 50 cm, and the surface is covered with a steel plate with a thickness of 10 mm;

[0055] The platform is fixed between the double-beam columns of the shield tunneling machine through four M20 bolts to ensure the stability and firmness of the platform;

[0056] Reinforcing ribs are provided above the platform to increase the stiffness and load-bearing capacity of the overall structure;

[0057] The winch base is connected to the platform by welding to ensure no relative displacement.

[0058] As a preferred embodiment of the construction method for the horizontal transportation of the shield tunneling machine in the present invention, the following applies: The steel wire rope is a high-strength galvanized steel wire rope with a diameter of Each strand consists of 19 fine steel wires, having good tensile strength and corrosion resistance;

[0059] Both ends of the steel wire rope are connected to the winch drum and the lug at the front end of the material transport trolley through U-shaped snap rings;

[0060] The number of layers of the steel wire rope wound on the drum does not exceed three layers to ensure smooth operation of the winch during work.

[0061] The beneficial effects of the present invention are as follows: By adopting the construction method of using a winch in cooperation with a material transport trolley for horizontal transportation, not only is the material transportation efficiency in shield tunneling construction significantly improved, but also the safety risks during manual handling are greatly reduced. Through precise design and installation, the method ensures efficient operation in a narrow space and has been verified in the shield slag pit construction project case. In the absence of traditional material hoisting facilities, this method can still achieve rapid construction while ensuring safety and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0063] Figure 1 It is a flowchart of the construction method for the horizontal transportation of the shield tunneling machine in Embodiment 1. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0064] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the following will provide a detailed description of the specific embodiments of the present invention in conjunction with the drawings in the specification.

[0065] In the following description, many specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention may be practiced in other ways than those specifically described herein, and those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0066] Secondly, as used herein, an "embodiment" or "embodiments" refer to specific features, structures, or characteristics that may be included in at least one implementation of the present invention. The phrase "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an isolated or alternative embodiment that is mutually exclusive of other embodiments.

[0067] Embodiment 1, referring to Figure 1 , is the first embodiment of the present invention. This embodiment provides a construction method for shield horizontal transportation, including the following steps:

[0068] S1. Use on-site measurement methods to measure and calculate the width of the trolley running track and the size of the concrete lining blocks to obtain the size of the material transport trolley;

[0069] Furthermore, accurately measure the actual width of the track and the length of the concrete lining blocks with a laser rangefinder;

[0070] Introduce an evaluation function to calculate the optimal trolley size, and the expression is:

[0071]

[0072] where W is the actual width of the track, L c is the length of the concrete lining block, W c is the width of the concrete lining block, H c is the height of the concrete lining block, G s is the reserved safety gap to ensure the stability and safety of the trolley on the track;

[0073] Based on the above formula, the optimal size of the material transport trolley is obtained.

[0074] It should be noted that when conducting on-site measurements, environmental factors such as temperature and humidity that affect the measurement accuracy need to be considered, and corrections should be made when necessary. In addition, the evaluation function not only considers the track width and the lining block size, but also comprehensively considers the safety gap for the trolley to run, ensuring that there is enough space for the trolley to run on the track to avoid collisions with other equipment or structures, thereby improving the reliability and safety of the system.

[0075] S2. Based on the size of the material transport trolley, manufacture the material transport trolley. After completion, grind the welded parts to obtain the material transport trolley;

[0076] Furthermore, based on the size of the material transport trolley, it is fabricated on-site with 200H-shaped steel and 10# channel steel for reinforcement.

[0077] Four track wheels are arranged at the bottom, and two tie devices are arranged at the front end. The size is 3m * 1.2m * 0.35m.

[0078] Cut and assemble the materials according to the design size to form the framework of the material transport trolley.

[0079] The heaviest material required for the shield construction of the branch line in this section is the precast concrete lining block. Each lining block weighs 0.97t, and 3 blocks are transported at a time.

[0080] Calculate the strength and size of the material transport trolley until the construction requirements are met. The expression is:

[0081]

[0082] Among them, Y s is the yield strength of the selected material, E m is the elastic modulus of the selected material, P max is the expected maximum load of the material transport trolley. The value range of the formula is greater than 0 and increases with the increase of Y s and E m , indicating that the better the material performance.

[0083] The framework of the material transport trolley uses 200H-shaped steel as the main beam and 10# channel steel as the auxiliary support structure.

[0084] The distance between the main beams is 3m, and the spacing between the channel steels is 0.5m, forming a stable rectangular frame structure.

[0085] Four track wheels with a diameter of 15cm are arranged at the bottom to ensure smooth operation on the track.

[0086] Two tie devices are arranged at the front end to connect the steel wire ropes and ensure uniform stress during the traction process.

[0087] It should be noted that during the manufacturing process of the material transport trolley, all welding points need to be operated strictly in accordance with the design drawings and comprehensively polished after completion to eliminate any possible stress concentration points and ensure the integrity and strength of the structure. In addition, the material selection should not only meet the strength requirements but also consider corrosion resistance and durability to meet the long-term use requirements in the underground humid environment.

[0088] S3. Use ultrasonic non-destructive testing to detect the welding points of the material transport trolley to obtain a stable material transport trolley.

[0089] Furthermore, select an ultrasonic flaw detector with a frequency range between 1 MHz and 10 MHz, and calibrate the equipment using a standard test block with known defects.

[0090] Before ultrasonic flaw detection, clean the welded parts to remove oil, rust, and other impurities.

[0091] Move the probe evenly on the weld seam and perform detection according to a predetermined scanning path. During the detection process, record the echo signal intensity at each position.

[0092] Introduce a quality assessment function Q to evaluate the quality of the weld seam. The expression is:

[0093]

[0094] where I is the actually detected echo signal intensity, and S std is the preset standard value of the qualified echo signal intensity.

[0095] After the detection is completed, collect all the detection data and analyze it. For any unqualified weld seam, mark the specific position and record the detailed defect information, and generate a detailed detection report based on the analysis results.

[0096] It should be noted that during the ultrasonic flaw detection process, in addition to recording the echo signal intensity, attention should also be paid to the state of the weld seam surface to ensure it is flat and defect-free. For any minor defects found, detailed records should be made and corresponding repair measures should be taken. In addition, the quality assessment function is not only used to judge whether the weld seam is qualified, but also helps to identify potential problem areas and provide a reference basis for subsequent maintenance.

[0097] S4. Install the winch between the double-beam columns of the shield machine and set the height to avoid collision with the segment erector, providing power support for the stable material transport trolley to obtain a material transport device with traction capacity.

[0098] Furthermore, install the winch between the double-beam columns of the shield machine and set the height to 50 cm.

[0099] Weld a 50 cm * 50 cm platform using 10# channel steel and 10 mm steel plate between the double-beam columns of the shield machine for fixing the winch platform.

[0100] Lift the winch and install it on the platform, and weld the base firmly to the platform.

[0101] During the design of the platform, set the rated pulling force of the winch to 30 KN, the rated speed of the wire rope to 8 m / min, and the diameter of the wire rope The rope capacity of the drum is 150m, the motor model is YZR160L-8, the power is 7.5kW, and the overall dimensions are 1050*1110*660mm;

[0102] Before it is officially put into use, conduct a load test on the winch, gradually increase the load until the maximum design load is reached;

[0103] After the test is completed, organize relevant personnel to conduct a comprehensive acceptance of the platform to ensure that each link meets the design standards and safety specifications;

[0104] The winch platform is welded by 10# channel steel, with dimensions of 50cm×50cm, and the surface is covered with a steel plate with a thickness of 10mm;

[0105] The platform is fixed between the double-beam columns of the shield machine through four M20 bolts to ensure the stability and firmness of the platform;

[0106] Reinforcing ribs are provided above the platform to increase the overall structural stiffness and load-bearing capacity;

[0107] The winch base is connected to the platform by welding to ensure no relative displacement.

[0108] It should be noted that the selection of the installation height of the winch should not only consider avoiding collision with the erector, but also ensure that the winch can operate smoothly during the working process, and will not affect the traction force or cause potential safety hazards due to improper height. In addition, the design of the platform needs to fully consider the load-bearing capacity and stability, and enhance the overall stiffness through structures such as reinforcing ribs to ensure stability under the maximum load.

[0109] S5. Connect the winch to the stable material transport trolley with a steel wire rope, calculate and select the corresponding diameter of the steel wire rope to obtain a complete transport system that can transport materials safely and efficiently;

[0110] Furthermore, based on the maximum weight P carried by the material transport trolley max and the specific conditions of the working environment;

[0111] Introduce a safety evaluation function to select the appropriate diameter of the steel wire rope. The expression is:

[0112]

[0113] where P max is the expected maximum load of the material transport trolley, S f is the safety factor set during design, and T s is the tensile strength of the selected steel wire rope material;

[0114] The calculated value of A is the minimum diameter of the required steel wire rope;

[0115] Fix one end of the hoist wire rope to the pulling ear at the front end of the material transport trolley, and wind the remaining wire rope regularly around the hoist drum;

[0116] After the connection is completed, adjust the tension of the wire rope appropriately so that it is neither too loose nor too tight;

[0117] Test the no-load operation and light-load operation of the platform, and observe the working state of the wire rope and the response of the hoist;

[0118] The wire rope is selected as a high-strength galvanized wire rope with a diameter of , each strand is composed of 19 fine steel wires, and it has good tensile strength and corrosion resistance;

[0119] Both ends of the wire rope are connected to the hoist drum and the pulling ear at the front end of the material transport trolley through U-shaped snap rings;

[0120] The number of winding layers of the wire rope on the drum does not exceed three layers to ensure the smooth operation of the hoist during work.

[0121] It should be noted that the safety assessment function is not only used to select the appropriate wire rope diameter, but also needs to be adjusted in combination with the actual working conditions (such as temperature, humidity, etc.). The selection of the wire rope should not only meet the tensile strength requirements, but also have good wear resistance and corrosion resistance to cope with the complex construction environment. In addition, when connecting the wire rope, it is necessary to ensure firm fixation and moderate tension to avoid safety hazards caused by excessive tightness or looseness.

[0122] S6. Start the hoist and tow the stable material transport trolley loaded with materials to the shield machine construction area, and pull the empty trolley back to the starting shaft after unloading the materials to achieve safe and efficient transportation of materials;

[0123] Furthermore, start the hoist for preliminary testing, check the motor and the wire rope, and tow the material transport trolley loaded with materials;

[0124] During the towing process, monitor the parameters of the hoist;

[0125] The parameters of the hoist include motor current, temperature change and wire rope tension;

[0126] When the material transport trolley arrives at the shield machine construction area, stop the hoist operation, and ensure that the trolley has come to a complete stop before performing the material unloading operation;

[0127] After the material unloading is completed, start the hoist again and slowly tow the empty material transport trolley back to the starting shaft.

[0128] It should be noted that before starting the winch, a comprehensive preliminary test is required, including checking key parameters such as motor current, temperature change, and wire rope tension to ensure that the system is in the best state. During the transportation process, monitor the changes of these parameters in real time, promptly discover and handle possible problems. In addition, the operation of the empty vehicle returning to the starting wellhead after the material is unloaded also needs to be carried out carefully to ensure the safety and stability during the return journey of the empty vehicle and avoid accidents caused by improper operation.

[0129] In summary, the construction method of the present invention using a winch in cooperation with a material transport trolley for horizontal transportation not only significantly improves the material transport efficiency in shield construction, but also greatly reduces the safety risks during manual handling. Through precise design and installation, the method ensures efficient operation in a narrow space and has been verified in the shield slag pit construction project case. In the absence of traditional material hoisting facilities, this method can still achieve rapid construction on the premise of ensuring safety and quality.

[0130] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A construction method for shield horizontal transportation, characterized in that: Including: Adopt on-site measurement methods to measure and calculate the width of the trolley running track and the size of the concrete lining blocks, and obtain the size of the material transport trolley; Based on the size of the material transport trolley, manufacture the material transport trolley, and after completion, polish the welded parts to obtain the material transport trolley; Use ultrasonic non-destructive testing to detect the welding points of the material transport trolley to obtain a stable material transport trolley; Install the winch between the double-beam columns of the shield machine and set the height to avoid collision with the erector, providing power support for the stable material transport trolley to obtain a material transport device with traction ability; Connect the winch and the stable material transport trolley with steel wire ropes, calculate and select the corresponding diameter of the steel wire ropes to obtain a complete transport system that can transport materials safely and efficiently; Start the winch and tow the stable material transport trolley loaded with materials to the construction area of the shield machine, and pull the empty trolley back to the starting shaft after unloading the materials to achieve safe and efficient material transportation.

2. The construction method for the shield horizontal transportation according to claim 1, characterized in that: The step of adopting on-site measurement methods to measure and calculate the width of the trolley running track and the size of the concrete lining blocks to obtain the size of the material transport trolley is as follows: Precisely measure the actual width of the track and the length of the concrete lining blocks with a laser rangefinder; Introduce an evaluation function to calculate the optimal trolley size; Based on the above formula, obtain the optimal size of the material transport trolley.

3. The construction method for shield horizontal transportation according to claim 2, characterized in that: The step of manufacturing the material transport trolley based on the size of the material transport trolley, and after completion, polishing the welded parts to obtain the material transport trolley is as follows: Based on the size of the material transport trolley, use 200H-shaped steel and 10# channel steel for on-site reinforcement production; Set 4 track wheels at the bottom and 2 tie devices at the front, with dimensions of 3m * 1.2m * 0.35m; Cut and assemble the materials according to the design dimensions to form the frame of the material transport trolley; The heaviest material required for the branch line shield construction of this section is the precast concrete lining body, each lining body is 0.97t, and 3 pieces are transported each time; Calculate the strength and size of the material transport trolley until the construction requirements are met.

4. The construction method for shield horizontal transportation according to claim 3, characterized in that: The step of using ultrasonic non-destructive testing to detect the welding points of the material transport trolley to obtain a stable material transport trolley is as follows: Select an ultrasonic flaw detector with a frequency range between 1MHz and 10MHz, and calibrate the equipment with a standard test block with known defects; Before ultrasonic flaw detection, clean the welding parts to remove oil stains, rust and other impurities; Move the probe evenly on the weld seam and perform detection according to the predetermined scanning path. During the detection process, record the echo signal intensity at each position; Introduce a quality evaluation function Q to evaluate the quality of the weld seam; After the detection is completed, collect all the detection data and analyze it. For any unqualified weld seam, mark the specific position and record the detailed defect information, and generate a detailed detection report according to the analysis results.

5. The construction method for shield horizontal transportation according to claim 4, characterized in that: The step of installing the winch between the double-beam columns of the shield machine and setting the height to avoid collision with the erector, providing power support for the stable material transport trolley to obtain a material transport device with traction ability is as follows: Install the winch between the double-beam columns of the shield machine, and set the height to 50cm; A 50cm*50cm platform is welded between the double beam columns of the shield machine using 10# channel steel and 10mm steel plate to fix the winch platform; Lift the winch and install it on the platform and weld the base to the platform firmly; During the platform design process, the rated pulling force of the winch is set to 30KN, the rated speed of the wire rope is 8m / min, the wire rope diameter is φ14mm, the rope capacity of the drum is 150m, the motor model is YZR160L-8, the power is 7.5kW, and the overall dimensions are 1050*1110*660mm; Before it is officially put into use, the winch is subjected to a load test, and the load is gradually increased until the maximum design load is reached; After completing the test, relevant personnel are organized to conduct a comprehensive acceptance of the platform to ensure that each link complies with design standards and safety regulations.

6. The construction method for shield horizontal transportation according to claim 5, characterized in that: The winch is connected to the stable material transport trolley by using a steel wire rope, and the steel wire rope of the corresponding diameter is calculated and selected to obtain a complete transportation system that can transport materials safely and efficiently. The specific steps are as follows: Based on the maximum weight P carried by the material handling trolley max and the specific conditions of the working environment; Introduce safety assessment function to select appropriate wire rope diameter; The calculated A value is the minimum diameter of the required wire rope; Fix one end of the winch wire rope to the front end pull ear of the material transport trolley, and wind the rest of the wire rope regularly on the winch drum; After completing the connection, adjust the tension of the wire rope appropriately so that it is neither too loose nor too tight; The test platform operates with no load and light load, and the working condition of the wire rope and the response of the winch are observed.

7. The construction method for the horizontal transportation of a shield tunneling machine according to claim 6, characterized in that: The winch is started and a stable material transport trolley loaded with materials is towed to the shield machine construction area, and the empty trolley is pulled back to the starting wellhead after unloading the materials, so as to realize safe and efficient transportation of materials. The specific steps are as follows: Start the winch for preliminary testing, check the motor and wire rope, and tow the material transport cart loaded with materials; During the traction process, monitor the parameters of the winch; The parameters of the winch include motor current, temperature change and wire rope tension; When the material transport trolley arrives at the shield machine construction area, stop the winch and make sure the trolley stops completely before unloading the materials; After the material unloading is completed, the winch is started again to slowly pull the empty material transport cart back to the starting wellhead.

8. The construction method for the horizontal transportation of a shield tunneling machine according to claim 7, characterized in that: The material transport trolley frame uses 200H steel as the main beam and 10# channel steel as the auxiliary support structure; The distance between the main beams is 3m, and the spacing between the channel steels is 0.5m, forming a stable rectangular frame structure; There are 4 track wheels with a diameter of 15cm at the bottom to ensure smooth running on the track; Two tie-down devices are provided at the front end to connect the steel wire rope to ensure uniform force during traction.

9. The construction method for the horizontal transportation of a shield tunneling machine as described in claim 8, characterized in that: The hoist platform is welded from 10# channel steel, with a size of 50cm×50cm and a steel plate covering the surface with a thickness of 10mm; The platform is fixed between the double beam columns of the shield machine by four M20 bolts to ensure the stability and firmness of the platform; Reinforcement ribs are provided above the platform to increase the rigidity and load-bearing capacity of the overall structure; The winch base is connected to the platform by welding to ensure no relative displacement.

10. The construction method for shield horizontal transportation according to claim 9, characterized in that: The wire rope selected is a high-strength galvanized wire rope with a diameter of φ14mm. Each strand is composed of 19 fine wires, having good tensile strength and corrosion resistance; Both ends of the wire rope are connected to the drum of the winch and the lugs at the front end of the material transport trolley through U-shaped snap rings; The number of layers of the wire rope wound on the drum does not exceed three layers to ensure the smooth operation of the winch during operation.

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