A cantilevered power-centralized EMU head car maintenance work platform

Abstract

The invention discloses a cantilevered maintenance work platform for a head car of a centralized power train set, which is characterized in that: it is used to renovate an existing maintenance shed and track of a passenger maintenance station, and comprises a cantilevered maintenance work shed, a contact network arm (2), a middle-level operation platform, a top-level operation platform, a suspended lightweight protective net (5) and existing maintenance shed columns (6); the contact network arm and the two-layer maintenance work platform on one side of the track to be renovated are installed thereon by using the existing maintenance shed columns; the cantilevered maintenance work shed and its columns are arranged on the opposite side of the renovated track, and the contact network columns on the opposite side share a passage with the cantilevered maintenance work shed columns, thereby solving many technical problems such as the contradiction between renovation and operation, and the contradiction between high standards and economy, and achieving a balance between reducing engineering costs and improving work efficiency.

Description

Technical Field

[0001] The invention belongs to the field of existing passenger maintenance depot reconstruction and centralized power EMU maintenance, and specifically relates to a cantilevered centralized power EMU head car maintenance operation platform. Background Art

[0002] At present, railway passenger trains are mainly divided into EMUs (distributed power type) and ordinary passenger trains. EMUs and ordinary passenger trains have been in use for many years, and their operation and maintenance technical standard system and related facilities are relatively complete, providing a strong guarantee for the safe transportation of railway passengers. As a series product of the "Fuxing" EMU, the power-concentrated EMU plays an important role in improving the efficiency of transportation organization and improving the travel conditions of passengers. Compared with the traditional "locomotive + vehicle" ordinary speed train, the power-concentrated EMU adopts a non-disassembly operation mode, which reduces the time for disassembly, end change and other operations, and adopts a fixed locomotive and vehicle formation and integrated maintenance mode.

[0003] At present, the maintenance work of centralized power EMU mainly faces the following two problems:

[0004] 1) When the centralized power EMU enters the EMU operation depot for maintenance without disassembly, the inspection depot line is often too short to meet the maintenance requirements. In addition, the maintenance tracks of traditional passenger maintenance depots are not electrified and cannot meet the running requirements of centralized power EMUs.

[0005] 2) The centralized power EMU is optimized and designed with reference to the experience and requirements of existing EMUs in China. Its structural parameters are quite different from those of traditional EMUs. If a new EMU operation depot is built for its maintenance, the project investment will be large, land acquisition will be difficult, and the construction period will be long. If the engineering shunting locomotive is used to haul the passenger maintenance depot for maintenance and maintenance, the maintenance facilities of the passenger maintenance depot cannot meet the requirements of maintenance, top maintenance, and storage of centralized power EMUs. Summary of the invention

[0006] In response to at least one of the above defects or improvement needs in the prior art, the present invention electrifies and networks the track that needs to be renovated according to the renovation requirements, and provides a cantilevered power-centralized EMU head car maintenance work platform. Taking into account the structural stress conditions of the existing maintenance shed columns in the passenger maintenance depot and the limitations of the foundation construction measures, the existing maintenance shed columns are used to install the contact network wrist arm and the two-layer maintenance work platform on one side of the track that needs to be renovated; a cantilevered maintenance work shed and its columns are set on the opposite side of the renovated track, and the opposite side contact network columns and the cantilevered maintenance work shed columns share a passage, so that the maintenance work passage between the two tracks of this renovation can be guaranteed to be smooth.

[0007] To achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided a cantilevered power-centralized EMU head car maintenance work platform, which is used to transform the existing preparation shed and track of the passenger maintenance station, and comprises a cantilevered maintenance work shed, a contact network arm, a middle-level work platform, a top-level work platform, a suspended lightweight protective net and existing preparation shed columns;

[0008] The cantilevered maintenance work shed comprises cantilevered maintenance work shed columns and a cantilevered maintenance work shed roof;

[0009] The existing maintenance shed includes existing maintenance shed columns and an existing maintenance shed ceiling;

[0010] A plurality of cantilevered maintenance work shed columns are arranged on the side of the existing preparation shed, and the cantilevered maintenance work shed roof is cantilevered from the top of the cantilevered maintenance work shed columns and extends toward the existing preparation shed columns, straddling over the multiple preparation tracks with trenches of the existing passenger maintenance station;

[0011] The contact network arm is provided on the outer side of the existing preparation shed column and the inner side of the cantilever maintenance work shed column, and is located above the power-concentrated EMU;

[0012] The middle-level working platform and the top-level working platform are arranged on the outer side of the existing preparation shed columns and the inner side of the cantilever maintenance work shed columns, and are arranged on the side of the power-concentrated EMU;

[0013] The suspended lightweight protective net is suspended below the ceiling of the cantilevered maintenance work shed and above the middle of the adjacent maintenance track.

[0014] Preferably, the bottom of the columns of the cantilevered maintenance work shed is cast with concrete on the existing hardened ground.

[0015] Preferably, the cantilevered maintenance work shed roof is arranged to be laterally inclined, and the end thereof close to the existing preparation shed columns is higher.

[0016] Preferably, a mounting interface for the contact network arm is preset on the column of the cantilever maintenance work shed;

[0017] And / or, a mounting interface for the contact network arm is added to the existing maintenance shed column.

[0018] Preferably, the contact network arm adopts a simple chain-type suspension, and the suspension type is contact suspension.

[0019] Preferably, the middle-level working platform includes a leading car middle-level working platform and a trailing car middle-level working platform, which are respectively arranged on the sides of the leading car and the trailing car of the power-concentrated EMU.

[0020] Preferably, the top-level working platform includes a top-level working platform of a leading car and a top-level working platform of a trailing car, which are arranged on the sides of the leading car and the trailing car of the power-concentrated EMU.

[0021] Preferably, a ladder is provided between the middle working platform and the ground, and a ladder with a safety door is provided between the top working platform and the middle working platform.

[0022] Preferably, a ceiling cantilever is connected to the lower part of the ceiling of the cantilevered maintenance work shed, and the suspended lightweight protective net is arranged on both sides of the ceiling cantilever.

[0023] Preferably, a maintenance vehicle is provided in a channel reserved on the hardened ground between adjacent maintenance tracks and below the suspended lightweight protective net, for operations including refueling, adding water, adding grease, adding sand, and draining sewage for the power-centralized EMU.

[0024] The above-mentioned preferred technical features can be combined with each other as long as they do not conflict with each other.

[0025] In general, the above technical solution conceived by the present invention has the following beneficial effects compared with the prior art:

[0026] 1. The cantilevered power-concentrated EMU head car maintenance work platform of the present invention electrifies and networks the track that needs to be rebuilt according to the reconstruction requirements. Taking into account the structural stress conditions of the existing maintenance shed columns in the passenger maintenance depot and the limitations of the basic construction measures, the contact network wrist arm and the two-layer maintenance work platform on one side of the track that needs to be rebuilt are installed thereon using the existing maintenance shed columns; a cantilevered maintenance work shed and its columns are set on the opposite side of the rebuilt track, and the opposite side contact network columns and the cantilevered maintenance work shed columns share a passage, so as to ensure smooth maintenance work passage between the two tracks of this reconstruction.

[0027] 2. The renovation plan creatively solved many technical problems such as the contradiction between renovation and operation, and the contradiction between high standards and economy, achieved a balance between reducing project costs and improving work efficiency, and generated great social and economic benefits.

[0028] 3. The reconstruction plan electrifies the tracks that need to be reconstructed, and adds two-story three-dimensional maintenance work platforms to the head and tail cars of the EMU, thus realizing the operation and maintenance of the centralized power EMU in the passenger maintenance depot.

[0029] 4. The integrated maintenance operation platform is divided into a three-layer structure. On the premise of meeting the maintenance requirements, it also achieves the goal of compact overall layout, small space occupation and high maintenance efficiency.

[0030] 5. The integrated maintenance work platform adopts a cantilever structure and a single-side column, which retains the maintenance channel to ensure smooth maintenance process and meet the needs of large component transportation and maintenance operations.

[0031] 6. The integrated maintenance work platform is prefabricated, and the main body adopts a light steel structure with low cost, stable structure, safety and reliability. The installation location and installation scheme fully meet the overall process layout requirements of railway locomotive maintenance. Among them, the bottom working platform adopts a sunken plane, which fully considers the practicality, convenience and safety of the working platform; the top working platform is equipped with a suspended lightweight protective net, which can effectively prevent casualties caused by people or objects falling from the air during the construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the composition of a cantilevered power-centralized EMU head car maintenance work platform according to an embodiment of the present invention;

[0033] Figure 2 It is a cross-sectional schematic diagram of a cantilevered power-centralized EMU head car maintenance work platform according to an embodiment of the present invention;

[0034] Figure 3 It is a schematic diagram of a cantilevered maintenance work shed of a cantilevered power-centralized EMU head car maintenance work platform according to an embodiment of the present invention;

[0035] Figure 4 It is a schematic diagram of the overhead contact network arm and installation of the cantilevered power-centralized EMU head car maintenance work platform according to an embodiment of the present invention;

[0036] Figure 5 It is a schematic diagram of the existing maintenance shed columns of the cantilevered power-centralized EMU head car maintenance work platform according to an embodiment of the present invention;

[0037] Figure 6 The middle and top working platforms of the cantilevered power centralized EMU head car maintenance working platform according to the embodiment of the present invention are schematically shown from the side. Figure 1 .

[0038] Figure 7 The middle and top working platforms of the cantilevered power centralized EMU head car maintenance working platform according to the embodiment of the present invention are schematically shown from the side. Figure 2 .

[0039] Figure 8 It is a schematic diagram of a suspended lightweight protective net for a cantilevered power-centralized EMU head car maintenance work platform according to an embodiment of the present invention. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in each embodiment of the present invention described below can be combined with each other as long as they do not conflict with each other. The present invention is further described in detail below in conjunction with specific embodiments.

[0041] As a preferred embodiment of the present invention, Figure 1-8 As shown, the present invention provides a cantilevered power-concentrated EMU head car maintenance work platform (since both ends of the EMU can be the head car, the "head car" here is not limited to one head car, to distinguish it from the full-length maintenance platform), which is used to transform the existing preparation shed and track of the passenger maintenance station, and mainly includes a cantilevered maintenance work shed, a contact network arm 2, a middle-level work platform, a top-level work platform, a suspended lightweight protective net 5, and an existing preparation shed column 6. In addition to the above main structures, the work platform also has components such as the existing preparation shed roof 7, the power-concentrated EMU to be repaired 8, the maintenance car 9, and the roof cantilever 10.

[0042] like Figure 2 As shown, the cantilever maintenance work shed includes a cantilever maintenance work shed column 1 and a cantilever maintenance work shed ceiling 11; the existing preparation shed includes an existing preparation shed column 6 and an existing preparation shed ceiling 7. The cantilever maintenance work shed ceiling 11 and the existing preparation shed ceiling 7 are both continuous along the track longitudinal direction. The existing preparation shed ceiling 7 is provided with a contact network.

[0043] A plurality of cantilevered maintenance work shed columns 1 are arranged on the side of the existing preparation shed, and the cantilevered maintenance work shed ceiling 11 is cantilevered from the top of the cantilevered maintenance work shed column 1 and extends toward the existing preparation shed column 6, straddling the preparation tracks with multiple trenches in the existing passenger maintenance station. The bottom of the cantilevered maintenance work shed column 1 is cast with concrete on the existing hardened ground. The cantilevered maintenance work shed ceiling 11 is arranged to be inclined horizontally, and the end close to the existing preparation shed column 6 is higher.

[0044] The contact network arm 2 is provided on the outer side of the existing preparation shed column 6 and the inner side of the cantilever maintenance work shed column 1, and is located above the power-concentrated EMU 8. The cantilever maintenance work shed column 1 is preset with an installation interface for the contact network arm 2; the existing preparation shed column 6 is added with an installation interface for the contact network arm 2. The contact network arm 2 adopts a simple chain suspension, the suspension type is contact suspension, and the conductor combination is JTMM95+CTA120.

[0045] The middle-level working platform and the top-level working platform are provided on the outer side of the existing preparation shed columns 6 and the inner side of the cantilever maintenance work shed columns 1, and are provided on the side of the power-concentrated EMU 8. The middle-level working platform includes the middle-level working platform 3 of the leading car and the middle-level working platform 31 of the trailing car, which are respectively provided on the sides of the leading car and the trailing car of the power-concentrated EMU. The top-level working platform includes the top-level working platform 4 of the leading car and the top-level working platform 41 of the trailing car, which are provided on the sides of the leading car and the trailing car of the power-concentrated EMU. A ladder is provided between the middle-level working platform and the ground, and a ladder with a safety door is provided between the top-level working platform and the middle-level working platform. A ceiling cantilever 10 is connected to the lower part of the ceiling 11 of the cantilevered maintenance work shed, and the suspended lightweight protective net 5 is provided on both sides of the ceiling cantilever 10.

[0046] The suspended lightweight protection net 5 is suspended below the cantilever maintenance work shed ceiling 11 and above the middle of the adjacent maintenance tracks. A maintenance vehicle 9 is arranged in a reserved passage on the hardened ground below the suspended lightweight protection net 5 and between the adjacent maintenance tracks, and is used for operations including refueling, watering, greasing, sanding, and sewage discharge of the power-concentrated EMU.

[0047] The specific structure is described as follows.

[0048] 1) Cantilevered maintenance shed

[0049] Cantilever maintenance shed Figure 3 As shown, the structure is the main body of the integrated work platform. The cantilever maintenance work shed column 1 is pre-buried and poured with concrete on the existing hardened ground. The contact network arm 2, the middle-level work platform 3 of the first car, the top-level work platform 4 of the first car, the middle-level work platform 31 of the tail car, and the top-level work platform 41 of the tail car are connected by bolts and installed on the column. Here, "first car" and "tail car" are used together to refer to the head and tail of the driving direction to distinguish the two car heads.

[0050] 2) Contact network arm

[0051] Contact network arm 2 Figure 4 As shown, it is installed on the upper part of the cantilever maintenance work shed column 1 and the existing preparation shed column 6 by bolts to support the contact suspension and transfer the load.

[0052] 3) Existing preparation shed columns

[0053] The existing preparation shed columns 6 Figure 5The existing preparation shed columns 6 are pre-buried and poured with concrete on the existing hardened ground, and the contact network arm 2, the middle working platform 3 of the leading car, the top working platform 4 of the leading car, the middle working platform 31 of the trailing car, the top working platform 41 of the trailing car and other structures are connected by bolts 11 and installed on the existing preparation shed columns 6.

[0054] 4) Working platform

[0055] Maintenance platform such as Figure 6-7 As shown. The middle-level working platform 3 of the leading car and the middle-level working platform 31 of the tail car are used for maintenance personnel to clean and inspect the locomotive doors and windows and enter and exit the locomotive; the top-level working platform 4 of the leading car and the top-level working platform 41 of the tail car are used for maintenance personnel to detect, clean, inspect and repair the roof equipment. The two-layer maintenance work platforms set up in the leading car and the tail car are connected to the cantilevered maintenance work shed columns 1 and the existing preparation shed columns 6 by bolts. In this solution, the car group between the leading car and the tail car no longer has an intermediate working platform. Through the traction of the EMU, the middle car group uses the leading car working platform and the tail car working platform to complete the work.

[0056] 5) Suspended lightweight protective net

[0057] Suspended lightweight protective net 5 Figure 8 As shown, it is connected to the ceiling cantilever 10 by bolts, and the ceiling cantilever 10 is connected to the top of the cantilever maintenance work shed 1 by bolts. The suspended lightweight protection net 5 is mainly used to prevent casualties caused by people or objects falling from the air during the construction process.

[0058] Taking into account the structural stress conditions of the existing maintenance shed columns in the passenger maintenance depot and the limitations of the foundation construction measures, the existing maintenance shed columns are used to install the contact network wrist arm and two-layer maintenance work platform on the side of the track that needs to be renovated; a cantilevered maintenance work shed and its columns are set up on the opposite side of the renovated track, and the contact network columns on the opposite side share a common passage with the columns of the cantilevered maintenance work shed, so as to ensure smooth maintenance work passage between the two tracks of this renovation.

[0059] In summary, the specific advantages of the present invention are as follows:

[0060] 1. The renovation plan creatively solved many technical problems such as the contradiction between renovation and operation, and the contradiction between high standards and economy, achieved a balance between reducing project costs and improving work efficiency, and generated great social and economic benefits.

[0061] 2. The reconstruction plan electrifies the tracks that need to be reconstructed, and adds two-story three-dimensional maintenance work platforms to the leading and trailing cars of the EMUs, thus realizing the operation and maintenance of power-centralized EMUs in the passenger maintenance depot.

[0062] 3. The integrated maintenance operation platform is divided into a three-layer structure. On the premise of meeting the maintenance requirements, it also achieves the goal of compact overall layout, small space occupation and high maintenance efficiency.

[0063] 4. The integrated maintenance work platform adopts a cantilever structure and a single-side column, retaining the maintenance channel to ensure a smooth maintenance process and meet the needs of large component transportation and maintenance operations.

[0064] 5. The integrated maintenance work platform is prefabricated, and the main body adopts a light steel structure with low cost, stable structure, safety and reliability. The installation location and installation scheme fully meet the overall process layout requirements of railway locomotive maintenance. Among them, the bottom working platform adopts a sunken plane, which fully considers the practicality, convenience and safety of the working platform; the top working platform is equipped with a suspended lightweight protective net, which can effectively prevent casualties caused by people or objects falling from the air during the construction process.

[0065] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cantilevered power-centralized EMU head car maintenance work platform, characterized in that: Used for renovating the existing maintenance shed and track of the passenger maintenance station, including a cantilever maintenance work shed, a contact network arm (2), a middle-level work platform, a top-level work platform, a suspended lightweight protective net (5) and existing maintenance shed columns (6); The cantilevered maintenance work shed comprises cantilevered maintenance work shed columns (1) and a cantilevered maintenance work shed ceiling (11); The existing maintenance shed comprises existing maintenance shed columns (6) and an existing maintenance shed ceiling (7); A plurality of cantilevered maintenance work shed columns (1) are arranged on the side of the existing preparation shed, and the cantilevered maintenance work shed roof (11) is cantilevered from the top of the cantilevered maintenance work shed columns (1) and extends toward the existing preparation shed columns (6), straddling above the multiple preparation tracks with trenches of the existing passenger maintenance station; The contact network arm (2) is provided on the outer side of the existing preparation shed column (6) and the inner side of the cantilever maintenance work shed column (1), and is located above the power-concentrated EMU (8); The middle-level working platform and the top-level working platform are both arranged on the outer side of the existing preparation shed columns (6) and the inner side of the cantilevered maintenance work shed columns (1), and are arranged on the side of the power-concentrated EMU (8); The suspended lightweight protective net (5) is suspended below the cantilevered maintenance work shed ceiling (11) and above the middle of an adjacent maintenance track; The cantilever maintenance work shed column (1) is pre-set with a mounting interface for the contact network arm (2); A mounting interface for the contact network arm (2) is added to the existing maintenance shed column (6); A ceiling cantilever (10) is connected and arranged below the cantilevered maintenance work shed ceiling (11), and the suspended lightweight protective net (5) is arranged on both sides of the ceiling cantilever (10); A maintenance vehicle (9) is provided in a reserved passage on the hardened ground between adjacent maintenance tracks below the suspended lightweight protective net (5) and is used for operations including refueling, watering, grease addition, sanding and sewage discharge of the power-concentrated EMU.

2. The cantilevered power-centralized EMU head car maintenance work platform as claimed in claim 1, characterized in that: The bottom of the cantilever maintenance work shed column (1) is cast with concrete on the existing hardened ground.

3. The cantilevered power-centralized EMU head car maintenance work platform as claimed in claim 1, characterized in that: The cantilevered maintenance work shed roof (11) is arranged to be inclined transversely, and the end thereof close to the existing preparation shed column (6) is higher.

4. The cantilevered power-centralized EMU head car maintenance work platform as claimed in claim 1, characterized in that: The contact network arm (2) adopts a simple chain-type suspension, and the suspension type is contact suspension.

5. The cantilevered power-centralized EMU head car maintenance work platform as claimed in claim 1, characterized in that: The middle-level operating platform comprises a leading car middle-level operating platform (3) and a trailing car middle-level operating platform (31), which are respectively arranged on the sides of the leading car and the trailing car of the power-concentrated EMU.

6. The cantilevered power-centralized EMU head car maintenance work platform as claimed in claim 1, characterized in that: The top-level working platform comprises a top-level working platform (4) of a leading car and a top-level working platform (41) of a trailing car, which are arranged on the sides of the leading car and the trailing car of the power-concentrated EMU.

7. The cantilevered power-centralized EMU head car maintenance work platform as claimed in claim 1, characterized in that: A ladder is provided between the middle working platform and the ground, and a ladder with a safety door is provided between the top working platform and the middle working platform.

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