Construction method for replacing existing line hump speed reducer

Abstract

The invention relates to the field of railway equipment replacement, and provides a construction method for replacing an existing line hump speed reducer, which comprises the following steps: S1, a preparation stage before construction: determining four continuous station tracks including three blocking station tracks and one auxiliary station track, and the blocking station tracks are respectively a first preset track, a second preset track and a first auxiliary track; the station track which does not need to be blocked is a third preset track; s2, a preparation stage before a blocking point; s21, the hardened surface is crushed; s3, a blocking point construction stage; and S4, opening an acceptance stage. The construction method has the effect of improving the construction efficiency.

Description

Technical Field

[0001] This application relates to the field of railway equipment replacement, and in particular to a construction method for replacing hump reducers on existing railway lines. Background Technology

[0002] With the rapid development of the national economy, railway freight volume has increased dramatically, making the marshalling of freight trains at marshalling yards increasingly busy. As a crucial component of humpback train marshalling, the increased frequency of use of humpback reducers has led to a significantly shorter replacement cycle than before. To reduce the impact of humpback reducer replacement on train marshalling efficiency, improvements must be made to existing humpback reducer replacement methods to enhance replacement efficiency.

[0003] In previous humpback gearbox replacement operations, the commonly used method was "occupy one, replace two, affect three". This method requires using a rescue crane to occupy the middle track of three tracks, and carry out humpback gearbox replacement work on the middle track and an adjacent track. The train with the new foundation plate is parked on another adjacent track. This method relies on the rescue crane for operation, and the rescue crane needs to perform track switching operations continuously during the construction process. In the busy marshalling yard operation environment, track switching operations take a lot of time and affect the construction progress. Summary of the Invention

[0004] To address the aforementioned issues, this application provides a method for replacing existing line hump reducers.

[0005] This application provides a construction method for replacing existing line humpback reducers, which adopts the following technical solution: A method for replacing the hump gear reducer on an existing power line includes the following steps: S1. Pre-construction preparation stage: Determine four continuous tracks, including three closed tracks and one auxiliary track. The closed tracks are designated as the first pre-set track, the second pre-set track, and the first auxiliary track; the track that does not need to be closed is designated as the third pre-set track. S2, Preparation stage before the blockade point; S21, Fragmented and hardened surface; S3. Construction Phase at the Blockade Point: S31. Removal of Old Reducers: Removal of existing reducer equipment from the first and second pre-set lanes; S32. Removal of Old Foundation Plates: The hammer truck occupies the first pre-set lane and removes the existing integral old foundation plates from the first pre-set lane; S33. Lifting Operation: The truck crane occupies the second pre-set lane to carry out lifting operations, lifting the old foundation plates removed in S32 to the third pre-set lane, or transporting the new reducer equipment to the first pre-set lane; S34. Open wagons cooperate in the construction on the third pre-set lane, receiving the removed old foundation plates and transporting the new equipment; S35. Installation of the new reducer equipment on the first pre-set lane; S36. The hammer truck leaves the first pre-set lane, the truck crane leaves the second pre-set lane, the hammer truck enters the second pre-set lane to remove the old foundation plates, and the truck crane enters the third pre-set lane to carry out lifting operations; S4. Commissioning and Acceptance Phase.

[0006] By adopting the above technical solution, and by using a truck crane and a hammer truck, two track reducers can be removed and one track reducer replaced simultaneously within a single track maintenance window. This significantly improves construction efficiency, reduces the impact on train formation, and decreases the number of maintenance points required for the project. It also enables continuous track maintenance window operations, further improving efficiency. At the same time, it optimizes the construction process, reduces the time for large machinery to switch tracks and the waiting time for labor, and lowers construction costs.

[0007] Optionally, in step S1, the pre-construction preparation stage further includes the following steps: S11. Material preparation; S12. Environmental measurement; S13. Plan development.

[0008] By adopting the above technical solutions, the pre-construction preparation stage is considered preliminary planning and maintenance, which facilitates coordination and communication for subsequent personnel, vehicle, and material allocation, reduces unnecessary accidents, and improves the overall stability of the construction method.

[0009] Optionally, in step S1, during the pre-construction preparation stage, there are two auxiliary tracks, namely the first auxiliary track and the second auxiliary track. The first auxiliary track is the first preset track and the other adjacent track away from the second preset track; the second auxiliary track is the third preset track and the other adjacent track away from the second preset track.

[0010] By adopting the above technical solution, the function of the two auxiliary tracks is to assist the hoisting and transportation of materials and equipment in the first, second and third preset tracks. If there are too many new equipment or new materials, or too many old foundation plates, all of which need to be transported, and the open wagons on the third preset track cannot meet the transportation needs, new open wagons can be added through the auxiliary tracks for transportation.

[0011] Optionally, in the preparation stage before the blocking point in step S2, the first auxiliary track also includes step 22, making a new base plate, with the new base plate making point located on the first auxiliary track.

[0012] By adopting the above technical solution, workers can prefabricate new foundation slabs on the first auxiliary road, so that when new foundation slabs need to be replaced, they can be put into use directly, thereby improving the overall construction efficiency.

[0013] Optionally, in step S32, the old foundation slab removal stage also includes S321, old stone debris removal; S322, laying new foundation stone debris; S323, leveling, elevation, centering and slope treatment; in step S33, it also includes step S331, new foundation slab hoisting, where a truck crane hoists the new foundation slab in the first auxiliary lane to the first preset lane.

[0014] By adopting the above technical solution, the stone debris around the old foundation slab is cleaned and replaced with new stone debris. At the same time, the new stone debris is laid with level, elevation, line center and slope treatment to ensure the accurate laying of the new foundation slab.

[0015] Optionally, in step S35, the installation stage of the first preset new reducer equipment also includes S351, laying of the new foundation plate; S352, installation of the new reducer equipment; and S353, wiring and debugging.

[0016] By adopting the above technical solution, after laying the new foundation, the new reducer equipment is installed to ensure a stable connection between the new reducer equipment and the new foundation. At the same time, after the new reducer equipment is installed, wiring and debugging are carried out to ensure that the new reducer equipment can operate normally.

[0017] Optionally, steps S35 and S36 can be performed simultaneously.

[0018] By adopting the above technical solutions, S35 and S36 can be carried out simultaneously, thereby improving the construction process and accelerating construction efficiency.

[0019] Optionally, in step S2, the pre-blocking preparation stage further includes: S23, turning off the power fuse of the reducer in the track; S24, removing the track wheel derailment device.

[0020] By adopting the above technical solutions, in order to ensure the safety of personnel and machinery within the blocked track, it is necessary to turn off the power fuse of the reducer within the blocked track and remove the wheel derailment device, thereby improving the safety of workers during construction.

[0021] Optionally, the second auxiliary lane provides access for open wagons. When there is insufficient space for open wagons in the third preset lane, the open wagons provided by the second auxiliary lane can be used to transport new speed reducers or old equipment and old foundation plates.

[0022] By adopting the above technical solution, the open wagon transportation provided by the second auxiliary lane can increase the transportation volume and speed. The open wagon transportation between the third pre-set lane and the second auxiliary lane is staggered, which improves the overall construction speed.

[0023] Optionally, during the commissioning and acceptance phase of S4, the acceptance includes point-to-point track compaction and shunting tests.

[0024] By adopting the above technical solutions, the track rolling and shunting tests are to verify the performance of the newly installed speed reducer in actual operation. The track rolling test can check the bearing capacity of the track and foundation, and the shunting test can check the braking effect of the speed reducer. Only after the track rolling and shunting tests are qualified can the target track be opened to ensure the safe operation of trains.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. By using truck cranes and hammer trucks, two track reducers can be removed and one track reducer replaced simultaneously within a single track maintenance window, which greatly improves construction efficiency, reduces the impact on train formation, reduces the number of maintenance points required for the project, enables continuous track maintenance window operations, further improves efficiency, optimizes the construction process, reduces the time for large machinery to switch tracks and the waiting time for labor, and reduces construction costs. 2. The pre-construction preparation stage involves planning and maintenance in the early stages, which facilitates coordination and communication for subsequent personnel, vehicle, and material allocation, reduces unnecessary accidents, and improves the overall stability of the construction method. Attached Figure Description

[0026] Figure 1 This is a construction diagram of a construction method in one embodiment of this application; Detailed Implementation

[0027] The following specific examples illustrate the implementation methods of this application. Those skilled in the art can easily understand other advantages and effects of this application from the information disclosed herein. This application can also be implemented or applied through other different specific embodiments, and various details in this application can be modified or changed according to different viewpoints and application systems without departing from the spirit of this application. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0028] The embodiments of this application will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily implement the application. This application may be embodied in many different forms and is not limited to the embodiments described herein.

[0029] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics represented in connection with that embodiment or example, which are included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics represented may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate different embodiments or examples represented in this application, as well as features of different embodiments or examples.

[0030] Furthermore, the terms "first" and "second" are used only to indicate an objective and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the representation of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0031] Throughout this specification, when it is said that a device is "connected" to another device, this includes not only "direct connection" but also "indirect connection" by placing other components in between. Furthermore, when it is said that a device "comprises" a certain constituent element, unless otherwise stated otherwise, this does not exclude other constituent elements, but rather implies that other constituent elements may be included.

[0032] The following is in conjunction with the appendix Figure 1 This application will be described in further detail below.

[0033] This application discloses a construction method for replacing the hump reducer of an existing power line.

[0034] A construction method for replacing hump gearboxes on existing railway lines is proposed. This construction method is a comprehensive project that requires the cooperation of multiple parties, including railway operations, locomotive operations, track maintenance, signaling, and construction units, to complete successfully.

[0035] In the traditional "occupy one, replace two, affect three" construction method, a rescue crane is required to occupy the middle track of three tracks to replace the hump reducer on the middle track and an adjacent track. The train with the new foundation plate is parked on another adjacent track. This construction method requires the rescue crane to continuously switch tracks for construction. In busy marshalling yard operations, track switching operations require a lot of time and the submission of rescue crane operation plans. Moreover, some marshalling yards do not have the conditions for track switching (depending on the actual yard type and the implementation of the scheduling plan). This will waste more construction time, rescue crane rental time, and labor waiting time.

[0036] Therefore, this application proposes a construction method for replacing speed reducers using a truck crane and hammer truck, which involves a sequential replacement process of "three-stage closure, one-stage replacement, and four-stage impact." This method includes four stages: pre-construction preparation, pre-closure preparation, closure construction, and opening and acceptance. These four stages are carried out in sequence to form a complete and orderly construction process, which can improve the efficiency of hump speed reducer replacement construction while reducing the impact on transportation.

[0037] Specifically, the steps include the following: S1. Pre-construction preparation stage: Determine four continuous tracks, which are three blocked tracks and one auxiliary track. The blocked tracks are the first pre-set track, the second pre-set track and the first auxiliary track. The three continuous tracks are blocked, while the third pre-set track is blocked.

[0038] Step S1, the pre-construction preparation stage, also includes the following steps: S11. Material Preparation: Sign construction safety agreements with the electrical, track maintenance, rolling stock, station, and locomotive departments to clarify their respective responsibilities and obligations, and prepare the necessary tools, instruments, and materials for construction, as well as prepare and inventory the truck cranes, hammer trucks, material transport trucks, open wagons, and diesel locomotives to be used in construction.

[0039] S12. Environmental Measurement: The survey and measurement of the track spacing of the reducer need to be replaced. This method is not suitable when the track spacing is greater than 6m or there are tall obstacles in the middle. This is because if the track spacing is greater than 6m or there are tall obstacles in the middle, it may affect the operation of the truck crane and the hammer truck, causing the construction to be unable to proceed smoothly. Therefore, it is not suitable for the construction method of this application.

[0040] S13. Develop a plan: Determine on-site the parking locations and entry / exit routes of locomotives, flatbed trucks (material-carrying open wagons), truck cranes, and hammer trucks before, during, and after each stage of the construction blockade. Prepare a construction plan, rationally plan the construction process and resource allocation, and arrange personnel to provide protection and set up warning signs at the peak and tail of the peak.

[0041] The construction plan needs to be formulated based on the actual site conditions, including the construction sequence, the time arrangement for each stage, and the allocation of personnel. Determining the parking positions of locomotives and construction machinery can avoid chaos during the construction process and improve construction efficiency.

[0042] The pre-construction preparation stage involves early planning and maintenance, which facilitates coordination and communication for subsequent personnel, vehicle, and material allocation, reduces unnecessary accidents, and improves the overall stability of the construction method.

[0043] S2, Preparation stage before the blockade point; S21, Breaking the hardened surface: Before the blockade point, organize personnel to use the skylight to manually break the hardened surface of the reducer near the first and second preset lanes, so as to loosen the hardened surface around the old reducer, so that the hardened cement blocks can be packed and stacked in woven bags later.

[0044] The preparatory stage before the blockade point includes engineering surveying of elevations, laying of angle steel, material handling (including unloading of rails), removal of garbage (such as bagged cement blocks), preliminary investigation of reducer control circuits, duct testing, site clearing (equipment relocation and sinking), and road widening and repair, to ensure the normal and orderly progress of construction.

[0045] S3, Blockade Point Construction Stage: S31, Removal of Old Speed ​​Reducers: Remove the existing speed reducer equipment of the first and second preset lanes. The existing old speed reducers of the first and second preset lanes are removed by manual cutting. The cutting method can be oxy-acetylene welding.

[0046] S32. Demolition of old foundation slabs: The hammer truck occupies the first preset lane and demolishes the existing old foundation slabs in the first preset lane. Specifically, the hammer truck moves along the first preset lane and enters the upper part of the reducer to gradually break and demolish the old foundation slabs.

[0047] S33. Lifting Operation: The truck crane occupies the second preset lane for lifting operations, lifting the old foundation slabs removed in S32 to the third preset lane, or transporting the new reducer equipment to the first preset lane. Before lifting, it is necessary to check for any problems and ensure that no personnel are walking or lingering on the lifting path to ensure the safety of personnel during lifting.

[0048] S34. Open wagons cooperate with the construction in the third pre-set lane, receiving the old foundation slabs to be demolished and transporting new equipment. The open wagons can transport the new equipment to the hoisting range. The new equipment can be a speed reducer or the tools required for the speed reducer. At the same time, the truck crane can also hoist the old foundation slabs that have been broken up in the first pre-set lane to the open wagons, and the open wagons will transport the old foundation slabs away.

[0049] S35. Installation of the new speed reducer equipment in the first preset lane: The new speed reducer equipment in the first preset lane is hoisted and transported from the third preset lane to the first preset lane by a truck crane on the second preset lane, without the need for lane switching construction.

[0050] S36, the hammer truck drives out of the first pre-set lane, the truck crane drives out of the second pre-set lane, the hammer truck enters the second pre-set lane to demolish the old foundation slab, the truck crane enters the third pre-set lane to carry out lifting operations, and the open wagons that were originally in the third pre-set lane travel on the adjacent lane on the side away from the second pre-set lane, which becomes the new third pre-set lane.

[0051] That is, after the original first preset track is replaced, the original second preset track is changed to the first preset track, the original third preset track is changed to the second preset track, and the adjacent track on the side of the original third preset track away from the second preset track is changed to the new third preset track. Then, steps S31-S36 are repeated until the construction of replacing the reducer is completed.

[0052] S4. Commissioning and acceptance phase: After the new reducer is replaced, it needs to be tested to ensure that it can be put into normal and stable use.

[0053] By utilizing truck cranes and hammer trucks, two track reducers can be removed and one track reducer replaced simultaneously within a single track maintenance window. This significantly improves construction efficiency, reduces the impact on train formation, and decreases the number of maintenance points required for the project. It also enables continuous track maintenance window operations, further improving efficiency. At the same time, it optimizes the construction process, reduces the time for large machinery to switch tracks and the waiting time for labor, and lowers construction costs.

[0054] In some embodiments, in step S1, the pre-construction preparation stage includes two auxiliary tracks, namely a first auxiliary track and a second auxiliary track. The first auxiliary track is a blocked track, which is another adjacent track of the first preset track that is far away from the second preset track.

[0055] The second auxiliary lane is another adjacent lane of the third preset lane, which is far away from the second preset lane. The second auxiliary lane is not a closed lane, so it can be used by open wagons.

[0056] The purpose of the two auxiliary tracks is to assist the hoisting and transportation of materials and equipment on the first, second, and third pre-set tracks. If there are too many new equipment or materials, or too many old foundation slabs, all of which need to be transported, and the open wagons on the third pre-set track cannot meet the transportation needs, new open wagons can be added through the auxiliary tracks for transportation.

[0057] Furthermore, in the first auxiliary road, the preparation stage before the blocking point in step S2 also includes step 22, the fabrication of a new foundation slab. Workers can prefabricate a new foundation slab on the first auxiliary road so that it can be put into use directly when a new foundation slab needs to be replaced, thereby improving the overall construction efficiency.

[0058] Furthermore, in step S32, the old foundation slab removal stage also includes S321, old stone debris removal. After the old reducer is removed, the hammer truck crushes the old foundation slab, and workers clean the old foundation slab. In step S33, a truck crane lifts the old foundation slab, and the old foundation slab stone debris around the old foundation slab needs to be cleaned. Therefore, the engineering professionals cooperate with manual cleaning of the old stone debris.

[0059] S322. Laying new foundation stone chips: After the old stone chips are cleaned up, workers transport new stone chips for laying.

[0060] When laying S323 and new stone chips, leveling, elevation, alignment, and slope treatment are required to ensure that the leveling, elevation, alignment, and slope treatment are reasonably matched when laying the new foundation slab.

[0061] Step S33 also includes step S331, new foundation slab hoisting, in which a truck crane hoists the new foundation slab in the first auxiliary track to the first preset track in preparation for laying the new foundation slab.

[0062] By cleaning up the rubble around the old foundation slab and replacing it with new rubble, and by ensuring the new rubble is laid horizontally, at the correct elevation, aligned with the center line, and sloped, the accurate laying of the new foundation slab can be guaranteed.

[0063] Furthermore, in step S35, the installation stage of the new reducer equipment for the first preset track also includes S351, laying of the new foundation plate. After step S331, the new foundation plate has been lifted to the first preset track by a truck crane. Therefore, step S351, i.e., laying of the new foundation plate, can be carried out after step S331. The laying of the new foundation plate requires the track maintenance professionals to do a good job of determining the elevation and slope of the roadbed surface and make records. When placing the new foundation plate, ensure that the foundation plates are aligned with the center of the track to ensure that the laying height, position, track center and slope of the new foundation plate are accurate, so that the trains on the railway can run more smoothly.

[0064] S352. Installation of new reducer equipment: After the new foundation plate is laid, the new reducer equipment can be installed.

[0065] 353. Wiring and debugging: Wiring and debugging involves wiring the cables of the new reducer equipment, installing insulation, drilling holes in the rails, installing boxes, (restoring) installing and debugging the first preset rail derailer, installing brake rails and air ducts, debugging the track circuits and equipment and testing them. The track maintenance department assists in manually grinding the rails, threading the main rails, and tightening fasteners.

[0066] After laying the new foundation, the new reducer equipment is installed to ensure a stable connection between the new reducer equipment and the new foundation. At the same time, after the new reducer equipment is installed, the wiring and debugging are carried out to ensure that the new reducer equipment can operate normally.

[0067] In step S32, the hammer truck completes the crushing of the first preset old foundation slab, and after step S34, the truck crane also completes the lifting task. At this time, step S36 can be carried out directly, that is, S35 and S36 can be carried out simultaneously, thereby improving the construction process and speeding up the construction efficiency.

[0068] In some embodiments, step S2, the pre-blocking preparation stage further includes: S23, turning off the power fuse of the reducer in the track, the electrical professional manually turning off the power fuse of the reducer of the blocked track, the closed track is the blocked track, namely the first preset track, the second preset track, and the first auxiliary track, arranging a special person to close the relevant track air duct valves, during the construction period, placing conspicuous signs at the air duct valves and arranging a special person to guard the air duct valves, and not opening or closing them at will without the permission of the construction supervisor.

[0069] The power fuses for the reducers of the first preset track, the second preset track, and the first auxiliary track are shut off because the first and second preset tracks require access by hammer trucks and mobile cranes, while the first auxiliary track requires manual access to prefabricate new foundation slabs. Therefore, the power fuses for the reducers of all tracks that require manual access must be shut off.

[0070] S24. Remove the track wheel derailers. Remove the vehicle derailers blocking the track. There are three preset tracks: the first preset track, the second preset track, and the first auxiliary track. Remove the box wiring and protect the equipment.

[0071] To ensure the safety of personnel and machinery within the blocked track, it is necessary to shut off the power fuses of the decelerators within the blocked track and remove the wheel derailment devices to improve the safety of workers during construction.

[0072] Furthermore, the second auxiliary lane provides access for open wagons. When there is insufficient space for open wagons in the third pre-designed lane, the open wagons provided by the second auxiliary lane can be used to transport new speed reducers or old equipment and old foundation plates. Therefore, using the open wagons provided by the second auxiliary lane can increase the transport volume and speed. The staggered transport of open wagons between the third pre-designed lane and the second auxiliary lane improves the overall construction speed.

[0073] In some embodiments, during the commissioning and acceptance phase of S4, acceptance includes point-to-point compaction and shunting tests.

[0074] Compacting the roadbed increases its density, thereby improving the railway's strength and load-bearing capacity. This helps prevent uneven or localized subsidence after use and is an effective means of checking track quality and the presence of potential safety hazards in the new foundation beneath the track.

[0075] During shunting, observe the braking force of the reducer and measure and fine-tune the reducer jaw size. The construction technical supervisor conducts a comprehensive inspection, test, and measurement of the newly installed equipment. After confirming that all technical parameters meet the technical requirements, the construction technical supervisor conducts a comprehensive review to confirm that all technical parameters meet the technical requirements before notifying normal shunting and deactivation.

[0076] The track rolling and shunting tests are conducted to verify the performance of the newly installed speed reducer in actual operation. The track rolling test can check the load-bearing capacity of the track and foundation, while the shunting test can check the braking effect of the speed reducer. Only after the track rolling and shunting tests are passed can the target track be opened to ensure the safe operation of trains.

[0077] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A method for replacing the humpback reducer on an existing power line, characterized in that, Includes the following steps: S1. Pre-construction preparation stage: Determine four continuous tracks, including three closed tracks and one auxiliary track. The closed tracks are designated as the first pre-set track, the second pre-set track, and the first auxiliary track; the track that does not need to be closed is designated as the third pre-set track. S2, Preparation stage before the blockade point; S21, Fragmented and hardened surface; S3. Construction Phase at the Blockade Point: S31. Removal of Old Reducers: Removal of existing reducer equipment from the first and second pre-set lanes; S32. Removal of Old Foundation Plates: The hammer truck occupies the first pre-set lane and removes the existing integral old foundation plates from the first pre-set lane; S33. Lifting Operation: The truck crane occupies the second pre-set lane to carry out lifting operations, lifting the old foundation plates removed in S32 to the third pre-set lane, or transporting the new reducer equipment to the first pre-set lane; S34. Open wagons cooperate in the construction on the third pre-set lane, receiving the removed old foundation plates and transporting the new equipment; S35. Installation of the new reducer equipment on the first pre-set lane; S36. The hammer truck leaves the first pre-set lane, the truck crane leaves the second pre-set lane, the hammer truck enters the second pre-set lane to remove the old foundation plates, and the truck crane enters the third pre-set lane to carry out lifting operations; S4. Commissioning and Acceptance Phase.

2. The construction method for replacing an existing line humpback reducer according to claim 1, characterized in that, In step S1, the pre-construction preparation stage also includes the following steps: S11. Material preparation; S12. Environmental measurement; S13. Plan development.

3. The construction method for replacing an existing line hump reducer according to claim 1, characterized in that, In step S1, during the pre-construction preparation stage, there are two auxiliary tracks, namely the first auxiliary track and the second auxiliary track. The first auxiliary track is the first preset track and the other adjacent track away from the second preset track; the second auxiliary track is the third preset track and the other adjacent track away from the second preset track.

4. The construction method for replacing an existing line hump reducer according to claim 1, characterized in that, In the first auxiliary lane, the preparation stage before the blocking point in step S2 also includes step 22, the fabrication of a new base plate, with the fabrication point of the new base plate located on the first auxiliary lane.

5. A construction method for replacing an existing line hump reducer according to claim 4, characterized in that, In step S32, the old foundation slab removal stage also includes S321, old stone debris removal; S322, laying new foundation stone debris; S323, leveling, elevation, centering and slope treatment; in step S33, it also includes step S331, new foundation slab hoisting, where a truck crane hoists the new foundation slab in the first auxiliary lane to the first preset lane.

6. A construction method for replacing an existing line hump reducer according to claim 5, characterized in that, In step S35, the installation stage of the first preset new reducer equipment also includes S351, laying of the new foundation plate; S352, installation of the new reducer equipment; and S353, wiring and debugging.

7. A construction method for replacing an existing line hump reducer according to claim 6, characterized in that, Steps S35 and S36 can be performed simultaneously.

8. A construction method for replacing an existing line hump reducer according to claim 1, characterized in that, In step S2, the pre-blocking preparation stage also includes: S23, turning off the power fuse of the reducer in the track; S24, removing the track wheel derailment device.

9. A construction method for replacing an existing line hump reducer according to claim 3, characterized in that, The second auxiliary lane provides access for open wagons. When there is insufficient space for open wagons in the third pre-designated lane, the open wagons provided by the second auxiliary lane can be used to transport new speed reducers or old equipment and old foundation plates.

10. A construction method for replacing an existing line humpback reducer according to claim 1, characterized in that, During the commissioning and acceptance phase of S4, the acceptance process includes track compaction and chute evacuation tests.

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