A track laying machine travel span-changing guide device and use method thereof

Abstract

The invention relates to the technical field of subway track laying engineering machinery, and specifically to a track laying machine travel span change guide device and a use method thereof. A trapezoidal temporary running rail is laid between a section temporary running rail and a main line running rail. One end of the travel span change guide device is buckled on the main line track, and the other end is connected to the web of the temporary running rail by bolts according to the inclination angle of the trapezoidal temporary running rail. The travel span change guide device comprises a basic section and a tread conversion section. The characteristic is that: the basic section is a longitudinally continuously elevated U-shaped groove structure welded by steel plates, one end of the tread conversion section is a longitudinally continuously elevated U-shaped groove structure welded by steel plates, and the other end is a transversely continuously contracted trapezoidal box beam structure welded by steel plates. The invention has the advantages of realizing the connection of different track gauges between the main line track and the trapezoidal continuous transition span change temporary running rail, and providing the basic guarantee for the operation of automatic span change track laying during the travel process.

Description

Technical Field

[0001] The invention relates to the technical field of subway track laying engineering machinery, in particular to a track laying machine travel span-changing guide device and a use method thereof. Background Art

[0002] At present, the metro track laying in China is generally carried out by machine laying. The track laying machine runs along the pre-laid temporary running rails to realize the transportation, adjustment and installation of rails, and the transportation of rail materials and small machinery and equipment. The following methods are used for the track laying machine to enter and exit the site: (1) The upper crossbeam adopts a track laying machine with a roller hanging leg structure set on the flange of a single box beam. The track car pushes the flatbed car along the temporary mainline track to run to the track laying operation surface. The track laying machine is lifted from the top of the shield machine, and the driving leg assembly drives the trolley running beam to move along the flange track to the track laying operation gauge to achieve the entry and span change. After the track laying construction is completed, the reverse procedure is followed to exit the site. The entry and exit methods of this method: the span change operation in the confined space of the shield machine is inconvenient to hang and lift, the operation is difficult, labor-intensive and time-consuming, and many auxiliary machines and tools are required, which is costly. The hanging on the top of the shield machine is easy to cause damage to the civil engineering structure, which poses a great safety hazard. (2) The upper crossbeam adopts a track-laying machine with a single box beam guide sleeve and guide column hydraulic cylinder driven telescopic mechanism. The rail car pushes the hydraulic support frame on the flatbed car along the temporary mainline track to carry the track-laying machine to the track-laying operation surface. The hydraulic support frame lifts the track-laying machine, and the upper crossbeam horizontal cylinder extends the support leg to the track gauge of the track-laying operation to achieve entry and span change. After the track-laying construction is completed, the reverse procedure is followed to exit the site. This method of entry and exit requires many auxiliary machines and tools, which is costly. The high-position lifting of the support frame is unstable, and there is a safety hazard of overturning. (3) The upper crossbeam adopts a track-laying machine with a double box beam guide sleeve and guide column telescopic structure: The rail car pushes the flatbed car along the temporary mainline track to run the track-laying operation surface, and the low-position lifting of the track-laying machine is horizontally moved to the operation gauge to achieve entry and span change. After the track-laying construction is completed, the reverse procedure is followed to exit the site. This method of entry and exit requires many auxiliary machines and tools, which is costly, and there is a safety hazard of overturning. In summary, the existing track laying machines need rail cars and flatbed trucks for auxiliary transportation when entering and exiting the site, and auxiliary machinery and materials such as jacking supports (or shield top suspension, or low-level jacks, auxiliary transverse rails and supporting materials) are required to change the track gauge of the mainline track span. There are safety hazards in the span change process, and the span change during entry and exit takes up effective track laying operation time, affecting the track laying efficiency.

[0003] In order to meet the higher demand for track laying construction efficiency, solve the problem of track laying machines continuously running in and out of the site on their own, and realize automatic span-changing track laying construction during the entire line's travel process, it is necessary to develop a track laying machine travel span-changing guide device and a method of use, so that the mainline running track and the pre-laid temporary running rails form a trapezoidal continuous running track, realize automatic span-changing track laying during the travel process, reduce labor, save supporting transportation machinery, materials and other resources, reduce costs, and improve work efficiency. Summary of the invention

[0004] The purpose of the present invention is to connect the mainline running track with the temporary running track in the section to form a trapezoidal continuous running track, solve the problem of jacking in narrow underground space, realize automatic span change in the process of track laying machine traveling without load, reduce labor, save supporting resources such as transportation machinery and materials, save invalid track laying time, improve track laying efficiency, and provide a track laying machine traveling span change guide device and its use method.

[0005] In order to achieve the above-mentioned purpose, a track laying machine travel span change guide device is designed, a trapezoidal temporary running rail is laid between the section temporary running rail and the main line running rail, one end of the travel span change guide device is buckled on the main line track, and the other end is connected to the web of the temporary running rail with bolts according to the inclination angle of the trapezoidal temporary running rail, including a basic section and a tread conversion section, characterized in that: the basic section is a longitudinally continuously elevated U-shaped groove structure welded by steel plates, one end of the tread conversion section is a longitudinally continuously elevated U-shaped groove structure welded by steel plates, and the other end is a transversely continuously shrinking trapezoidal box beam structure welded by steel plates.

[0006] The basic section includes a cover plate, a web plate, a rail support plate, a reinforcement plate and a flange plate. One end of the cover plate is a wedge-shaped slope. A groove is provided under the cover plate. A rail support plate that changes with the longitudinal trapezoidal cross-section is provided in the groove. Symmetrical connecting flange plates are provided on the outer side of the U-groove web plate at the connecting end of the basic section. Threaded holes with reinforcement plates are provided at the two web plates of the basic section corresponding to the rail waist position of the mainline track, which are used to lock the basic section and the mainline track into a whole.

[0007] The tread conversion section includes a cover plate, a web plate, a bottom plate, a rail support plate, a reinforcement plate, a flange plate and a partition plate. A rail support plate that changes with the longitudinal trapezoidal cross-section is provided in the groove below the cover plate of the U-shaped groove section of the tread conversion section. Symmetrical connecting flange plates are provided on the outer side of the U-shaped groove web plate at the connecting end of the tread conversion section. Threaded holes with reinforcement plates are provided at the waist positions of the two web plates corresponding to the mainline track. The end of the box beam section of the tread conversion section is a connecting double-ear flange plate with a connecting long hole that is consistent with the transverse inclination of the temporary running rail, which is plugged into the web plate of the temporary running rail.

[0008] An installation step of a track laying machine travel span changing guide device, characterized in that: the steps are as follows

[0009] A. Install the U-shaped groove structure of the tread conversion section on the main track, and ensure that the inclined double-ear flange plate of the box beam section faces the direction of the trapezoidal temporary running rail;

[0010] B. Install the basic U-shaped groove structure on the main track, and ensure that the flange plate at the connecting end faces the direction of the U-shaped groove connecting flange of the tread conversion section;

[0011] C. Move the connecting flanges of the basic section and the tread conversion section along the mainline track to align them, adjust the connecting flange holes of the two components to accurately align them, and use bolts to firmly install the basic section and the tread conversion section so that the basic section and the tread conversion section form a whole guide device;

[0012] D. Adjust the guide device longitudinally so that the double-ear flange plate at the end of the tread conversion section clamps the web of the temporary running rail, and the bolt holes of the fish plate are accurately aligned, ensuring that the plane of the upper cover plate of the tread conversion section box beam section is aligned with the temporary running rail surface and adjusted to the same height, install the bolt pair, and connect and tighten;

[0013] E. Install bolts on the U-groove web at the rail waist position of the guide device corresponding to the mainline track, and adjust the guide device to align with the mainline track and tighten them in place to complete the installation of the guide device.

[0014] A method for using a track laying machine travel span-changing guide device, characterized in that: the method steps are as follows:

[0015] A. When the track laying machine enters the site along the main track, it runs along the main track to the basic section end of the guide device, and smoothly runs to the guide device through the wedge-shaped ramp cover plate;

[0016] B. The track laying machine runs along the guide device according to the track gauge of the main line to the end of the tread conversion section and the starting end of the span change;

[0017] C. The front running wheels of the track laying machine run along the temporary running rails with trapezoidal continuous transition span, and the rear running wheels run along the main track of the guide device;

[0018] D. When the front running wheel of the track laying machine runs to the temporary running track gauge of the variable span and the conditions cannot be met, the track laying machine automatically monitors and controls the upper variable span to drive the running wheel of the track laying machine to change span outwards, and the track laying machine smoothly runs to the interval running track through the trapezoidal continuous transition variable span temporary running track, realizing the automatic variable span entry of the track laying machine during the no-load travel process;

[0019] E. When the track laying machine exits along the main line, the reverse procedure is followed to operate the track laying machine from the section running track through the trapezoidal continuous transition temporary running rail and the guide device to run to the main line track, so that the track laying machine can automatically exit along the section running track during the no-load travel process.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1. It realizes the connection of different track gauges between the mainline track and the trapezoidal continuous transition variable span temporary running track, providing the basic guarantee for the operation of automatic variable span track laying during the traveling process;

[0022] 2. It facilitates the rapid operation of the mainline track to the trapezoidal continuous transition span temporary running track, and realizes the entry and exit operation of the track laying machine during the travel process;

[0023] 3. Reduce the resource input of track laying machine span change auxiliary equipment, reduce labor intensity, reduce the risk of span change, and improve track laying construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the technical principle of the traveling span-changing guiding device of the present invention;

[0025] Figure 2 This is a front view of the traveling span-changing guiding device of the present invention;

[0026] Figure 3 A top view of the traveling span-changing guide device of the present invention;

[0027] Figure 4 This is a front view of the basic section of the present invention;

[0028] Figure 5 It is a top view of the basic section of the present invention;

[0029] Figure 6 This is a front view of the tread conversion section of the present invention;

[0030] Figure 7 A top view of the tread conversion section of the present invention;

[0031] In the figure: 1. Basic section 2. Tread conversion section 3. M24 bolt 4. M12 bolt pair 5. M20 bolt pair 1-1. Basic section pedal 1-2 Basic section belly plate 1-3. Basic section rail support plate 1-4. Basic section reinforcement plate 1-5. Basic section flange plate 2-1. Tread conversion section cover plate 2-2. Tread conversion section belly plate 2-3. Tread conversion section bottom plate 2-4 Tread conversion section rail support plate 2-5. Tread conversion section reinforcement plate 2-6. Tread conversion section flange plate 2-7. Tread conversion section partition plate. DETAILED DESCRIPTION

[0032] The present invention is further described below in conjunction with the accompanying drawings, and the structure and principle of the present invention are very clear to people in the field. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0033] The main technical scheme of the present invention is to design a span-changing guiding device for a track laying machine. According to the need to match the wheel tread width and wheel wheelbase of the track laying machine with the length of the trapezoidal temporary running rail, the length of the span-changing guiding device, the inclination angle of the connecting female head and the U-shaped groove cross-section mounted on the main line track are determined to ensure that the span-changing guiding device and the trapezoidal temporary running rail form a continuously variable span running track, and cooperate with the track laying machine to automatically monitor and control the upper span-changing capacity to realize automatic span-changing entry and exit during the no-load travel process of the track laying machine.

[0034] Example 1:

[0035] The technical principle of the present invention is to lay a temporary ladder-shaped running track between the temporary running track in the section and the mainline running track in order to realize the automatic change of span during the track laying process. One end of the running span change guide device is buckled on the mainline track, and the other end is connected to the web of the temporary running track with bolts according to the inclination angle of the ladder-shaped temporary running track, so that the mainline track and the temporary running track form a continuous running track for the automatic change of span during the unloaded running of the track laying machine. Figure 1 shown.

[0036] Method for determining the inclination angle of trapezoidal continuous temporary running rails:

[0037] (1) Known conditions: The P60 rail of the track laying machine's main line running track has a rail head width of 73 mm, the P24 rail of the temporary running rail has a rail head width of 51 mm, the wheelbase of the track laying machine is 2000 mm, the gauge of the continuous trapezoidal temporary running rail is 1508 mm at the starting end and 3000 mm at the stop end, the tread diameter of the track laying machine's running wheel is 500 mm and the width is 120 mm, and the gauge and wheelbase of the track laying machine form a rectangular structure.

[0038] (2) In order to ensure that the track laying machine can always run on the trapezoidal temporary running rails, it is necessary to ensure that the outermost side of the track laying machine's running wheel tread at the larger gauge end of the temporary running rail and the innermost side of the track laying machine's running wheel tread at the smaller gauge end of the temporary running rail are both on the running rails. Therefore, the trapezoidal temporary running rails must be of sufficient length.

[0039] (3) The minimum length L of the trapezoidal temporary running rail is calculated as follows:

[0040]

[0041] Substituting the known conditions into the equation:

[0042]

[0043] In order to ensure that the track laying machine always operates dynamically on the trapezoidal temporary running rail, a certain amount of redundancy is reserved. Under this condition, the laying length of the trapezoidal temporary running rail is selected to be 30,000 mm.

[0044] (4) The inclination angle α of the trapezoidal temporary running rail is calculated as follows:

[0045]

[0046] (5) The laying length and inclination angle of the trapezoidal temporary running rail can be calculated and determined according to the actual redundancy required at the construction site. The inclination angle of the double-ear flange plate connecting the web of the temporary running rail at the tread conversion section of the guide device should be changed accordingly to ensure the continuity of the variable gauge running track.

[0047] Example 2:

[0048] The design of the present invention mainly consists of two parts: the basic section and the tread conversion section. Figure 2 shown.

[0049] The basic section is designed as a longitudinally continuous U-shaped groove structure welded with steel plates, including: cover plate, web plate, rail support plate, reinforcement plate, flange plate, etc. Figure 3 As shown. One end of the basic section cover is processed into a wedge-shaped slope, and a rail support plate that changes with the longitudinal trapezoidal cross-section is set at intervals of 250mm in the groove below the cover, so that the basic section can be overlapped on the top surface of the mainline rail and form a continuously lifted trapezoidal structure. A symmetrical connecting flange plate is designed on the outside of the U-shaped groove web at the connection end of the basic section to achieve connection with the tread conversion section to form a smooth and continuously elevated track for the track laying machine. M24 threaded holes with reinforcement plates are set at the two webs of the basic section corresponding to the rail waist position of the mainline track, which is convenient for installing bolts to lock the basic section and the mainline track into a whole.

[0050] One end of the tread conversion section is designed as a longitudinally continuous U-shaped groove structure welded by steel plates, and the other end is designed as a transversely continuous shrinking trapezoidal box beam structure welded by steel plates, including: cover plate, web plate, bottom plate, rail support plate, reinforcement plate, flange plate, partition plate, etc. Figure 4 As shown. Rail support plates that change with the longitudinal trapezoidal cross-section are set at intervals of 250mm in the slot below the cover plate of the U-shaped slot section of the tread conversion section. Symmetrical connecting flange plates are designed on the outer side of the U-shaped slot web at the connection end. M24 threaded holes with reinforcement plates are set at the waist positions of the two webs corresponding to the rails of the mainline track, so as to achieve overlap with the top surface of the mainline rail, connect with the basic section to form a smooth and continuously rising track laying machine running track, and lock with the mainline track into a whole. The end of the box beam section of the tread conversion section is designed to be a connecting double-ear flange plate with a connecting long hole that is consistent with the transverse inclination of the temporary running rail. It can be plugged into the web of the temporary running rail and locked with a bolt pair. The spacing of the long holes is 20mm to adapt to the longitudinal installation deviation of the tread conversion section and the temporary running rail, so as to achieve connection with the temporary running rail to form a smooth track laying machine running track.

[0051] Example 3: Installation steps of the track laying machine travel span changing guide device:

[0052] 1. Install the U-shaped groove structure of the tread conversion section on the main line track to ensure that the inclined double-ear flange plate of the box girder section faces the direction of the trapezoidal temporary running rail.

[0053] 2. Install the basic U-shaped groove structure on the main line track, ensuring that the flange plate at the connecting end faces the direction of the U-shaped groove connecting flange of the tread conversion section.

[0054] 3. Move the connecting flanges of the basic section and the tread conversion section along the mainline track to align them, adjust the connecting flange holes of the two components to align accurately, and use 4 sets of M12 bolt pairs to firmly install the basic section and the tread conversion section so that the basic section and the tread conversion section form a whole guide device.

[0055] 4. Adjust the guiding device longitudinally so that the double-ear flange plate at the end of the tread conversion section clamps the web of the temporary running rail, and the bolt holes of the fishplate are accurately aligned. Ensure that the plane of the upper cover plate of the box girder section of the tread conversion section is aligned with the surface of the temporary running rail and adjusted to the same height, install the M20 bolt pair, and connect and tighten.

[0056] 5. Install M24 bolts on the U-groove web at the rail waist position of the guide device corresponding to the mainline track, adjust the guide device to align with the mainline track and tighten them in place to complete the installation of the guide device.

[0057] Example 4: The method of using the track laying machine's travel span-changing guide device is as follows:

[0058] 1. When the track laying machine enters the site along the main line track, it runs along the main line track to the basic section end of the guide device, and runs smoothly onto the guide device through the wedge-shaped ramp cover.

[0059] 2. The track laying machine runs along the guide device according to the mainline track gauge to the end of the tread conversion section and the starting end of the span change.

[0060] 3. The front running wheels of the track laying machine run along the trapezoidal continuous transition span temporary running rail, and the rear running wheels run along the main line track of the guide device.

[0061] 4. When the front running wheels of the track laying machine run to the temporary running track gauge of the variable span and the conditions cannot be met, the track laying machine automatically monitors and controls the upper variable span to drive the running wheels of the track laying machine to change span outwards. The track laying machine smoothly runs to the section running track through the trapezoidal continuous transition variable span temporary running rail, realizing the automatic change of span to enter the site during the no-load travel process of the track laying machine.

[0062] 5. When the track laying machine exits along the main line, the reverse procedure is followed to operate the track laying machine from the section running track through the trapezoidal continuous transition temporary running rail and the guide device to the main line track, so that the track laying machine can automatically exit along the main line during the no-load travel process.

Claims

1. A track laying machine travel span change guide device, wherein a trapezoidal temporary running rail is laid between the section temporary running rail and the main line running rail, one end of the travel span change guide device is buckled on the main line track, and the other end is bolted to the temporary running rail web according to the inclination angle of the trapezoidal temporary running rail, comprising a basic section and a tread conversion section, characterized in that: The basic section is a longitudinally continuously raised U-shaped groove structure welded by steel plates, one end of the tread conversion section is a longitudinally continuously raised U-shaped groove structure welded by steel plates, and the other end is a transversely continuously contracted trapezoidal box beam structure welded by steel plates; The basic section comprises a cover plate, a web plate, a rail support plate, a reinforcement plate and a flange plate. One end of the cover plate is a wedge-shaped slope. A groove is provided below the cover plate. A rail support plate that changes with the longitudinal trapezoidal cross-section is provided in the groove. A symmetrical connecting flange plate is provided on the outer side of the U-shaped groove web plate at the connection end of the basic section. The two web plates of the basic section are provided with threaded holes with reinforcement plates at the rail waist positions corresponding to the mainline track, which are used to lock the basic section and the mainline track into a whole. The tread conversion section includes a cover plate, a web plate, a bottom plate, a rail support plate, a reinforcement plate, a flange plate and a partition plate. A rail support plate that changes with the longitudinal trapezoidal cross-section is provided in the groove below the cover plate of the U-shaped groove section of the tread conversion section. Symmetrical connecting flange plates are provided on the outer side of the U-shaped groove web plate at the connecting end of the tread conversion section. Threaded holes with reinforcement plates are provided at the waist positions of the two web plates corresponding to the mainline track. The end of the box beam section of the tread conversion section is a connecting double-ear flange plate with a connecting elongated hole that is consistent with the lateral inclination of the temporary running rail, which is plugged into the web plate of the temporary running rail.

2. The method for installing a track laying machine travel span-changing guide device according to claim 1, characterized in that: The method is as follows A. Install the U-shaped groove structure of the tread conversion section on the main track, and ensure that the inclined double-ear flange plate of the box beam section faces the direction of the trapezoidal temporary running rail; B. Install the basic U-shaped groove structure on the main track, and ensure that the flange plate at the connecting end faces the direction of the U-shaped groove connecting flange of the tread conversion section; C. Move the connecting flanges of the basic section and the tread conversion section along the mainline track to align them, adjust the connecting flange holes of the two components to accurately align them, and use bolts to firmly install the basic section and the tread conversion section so that the basic section and the tread conversion section form a whole guide device; D. Adjust the guide device longitudinally so that the double-ear flange plate at the end of the tread conversion section clamps the web of the temporary running rail, and the bolt holes of the fish plate are accurately aligned, ensuring that the plane of the upper cover plate of the tread conversion section box beam section is aligned with the temporary running rail surface and adjusted to the same height, install the bolt pair, and connect and tighten; E. Install bolts on the U-groove web at the rail waist position of the guide device corresponding to the mainline track, and adjust the guide device to align with the mainline track and tighten them in place to complete the installation of the guide device.

3. The method for using the track laying machine travel span changing guide device according to claim 1, characterized in that: The method steps are as follows A. When the track laying machine enters the site along the main track, it runs along the main track to the basic section end of the guide device, and smoothly runs to the guide device through the wedge-shaped ramp cover plate; B. The track laying machine runs along the guide device according to the track gauge of the main line to the end of the tread conversion section and the starting end of the span change; C. The front running wheels of the track laying machine run along the temporary running rails with trapezoidal continuous transition span, and the rear running wheels run along the main track of the guide device; D. When the front running wheel of the track laying machine runs to the temporary running track gauge of the variable span and the conditions cannot be met, the track laying machine automatically monitors and controls the upper variable span to drive the running wheel of the track laying machine to change span outwards, and the track laying machine smoothly runs to the interval running track through the trapezoidal continuous transition variable span temporary running track, realizing the automatic variable span entry of the track laying machine during the no-load travel process; E. When the track laying machine exits along the main line, the reverse procedure is followed to operate the track laying machine from the section running track through the trapezoidal continuous transition temporary running rail and the guide device to run to the main line track, so that the track laying machine can automatically exit along the section running track during the no-load travel process.

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