Hanging walking open-close type maintenance work platform

Abstract

The utility model discloses a hanging running open-close type maintenance operation platform, which is characterized in that a running device is arranged on the upper part, so that the operation space of a first-layer maintenance platform and a second-layer maintenance platform is increased, a running cross beam is used as a main bearing part, and the space limitation of the lower part is avoided because the space above is abundant; the bearing stability is conveniently improved by increasing the size of the walking cross beam, so that the stability of train walking and bearing platform walking is improved, meanwhile, the wheelbase of the walking device is increased, the load point of an air rail vehicle on the bearing platform acts on the wheelbase of the walking device, the overall stability of the platform is further improved, and the service life of the platform is prolonged. When a freight heavy-load sky train is overhauled, the platform can be effectively prevented from overturning, and the operation safety is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of freight skyrail train maintenance, and in particular, to a suspended and traveling open and close maintenance work platform. Background Art

[0002] The maintenance of skytrains is mainly concentrated on the top of the vehicle. When the operators perform maintenance work on the roof, they need to use the maintenance platform. Most of the existing skytrain maintenance platforms use single-layer platforms. However, due to the large height difference between the roof equipment and the bogie, the maintenance of the operators is difficult. In addition, the existing double-layer operation and maintenance platform, the first-layer platform is a fixed platform for repairing the top equipment of the vehicle, and the second-layer platform is an open-and-close platform. The second-layer platform is provided with two track beams, which are respectively arranged on the guide rails of the second-layer support beam frame. The two track beams can be opened or closed along the width direction of the track beams. When the two track beams are closed, the bogie is suspended on the two track beams. When the two track beams are opened, the bogie can be transported by the hoisting equipment, thereby realizing the maintenance of the bogie. For example, patent CN218933767U discloses an open-and-close track device and a train maintenance platform, that is, the above-mentioned double-layer operation and maintenance platform structure is adopted. However, the running devices of the existing double-layer operation and maintenance platforms are all placed below, and the stability of the train running and the track beam running is determined by the supporting structure below. Therefore, the supporting structure adopts the diagonal bracing reinforcement method, which can be suitable for light-loaded skyrail trains with an axle weight of about 5 tons. However, for heavy-loaded skyrail trains with an axle weight of more than ten tons, since the platform has a large load-bearing weight and the space below is limited by the size of the vehicle limit, the reinforcement size of the supporting structure is limited, the stability of the heavy-loaded train when running on the platform is poor, and the platform's anti-overturning ability is not strong, and even serious safety accidents may occur. Utility Model Content

[0003] The utility model provides an open and close maintenance work platform with suspended travel, which realizes suspended travel by placing the travel device upward, avoids the space limitation below, improves the stability of train travel and carrying platform travel, and solves the problem of platform overturning.

[0004] According to one aspect of the utility model, a hanging and walking open and close maintenance work platform is provided, comprising a steel frame, a first-layer maintenance platform, a first mobile bearing platform, a second mobile bearing platform, a second-layer maintenance platform, a walking beam and a walking device, wherein the steel frame is fixedly installed on the ground, the first-layer maintenance platform is fixed on the steel frame, the walking beam is fixed on the steel frame and is located above the first-layer maintenance platform, the first mobile bearing platform and the second mobile bearing platform are respectively moved along the walking device

[0005] It is movably suspended on the running beam in the width direction so that the first mobile load-bearing platform and the second mobile load-bearing platform can be switched between an open state and a closed state. In the closed state, the bogie of the train is suspended on the first mobile load-bearing platform and the second mobile load-bearing platform. In the open state, the bogie of the train can be transported out from the gap between the first mobile load-bearing platform and the second mobile load-bearing platform. The second-floor maintenance platform is fixed on the steel frame and is located above the first mobile load-bearing platform and the second mobile load-bearing platform.

[0006] Furthermore, the running device includes a running frame, running wheels and load-bearing columns, the running frame is fixedly connected to the first mobile load-bearing platform or the second mobile load-bearing platform through the load-bearing columns, two pairs of the running wheels are installed on the running frame at intervals along the width direction of the running beam, and each pair of the running wheels are installed symmetrically on both sides of the running beam.

[0007] Furthermore, three running devices are installed on the first mobile bearing platform and the second mobile bearing platform, wherein an active running device is respectively arranged at both ends of the bearing platform, and a passive running device is arranged in the middle of the bearing platform.

[0008] Furthermore, the active running device also includes a guide wheel assembly installed on the running frame, which is used to provide a centering horizontal force for the movement of the carrying platform.

[0009] Furthermore, it also includes a driving device for driving the active running device to move relative to the running beam.

[0010] Furthermore, a sensing component is provided on the running frame, and a position switch is provided on the running beam. When the first mobile bearing platform and the second mobile bearing platform move to the positioning point during the opening or closing process, the position switch senses the sensing component and sends a feedback signal.

[0011] Furthermore, the running crossbeam includes a left steel plate, a right steel plate, a bottom steel plate, a top steel plate, a transverse steel partition and a vertical steel partition, and the left steel plate, the right steel plate, the bottom steel plate and the top steel plate together form a double-web H steel structure, and the transverse steel partition is arranged on the central axis of the double-web H steel structure in the width direction to symmetrically divide the enclosed area of ​​the double-web H steel structure into front and rear sides, and three vertical steel partitions are symmetrically arranged on the front and rear sides of the transverse steel partition along the width direction of the double-web H steel structure. The area between the two vertical steel partitions located on the left and the middle constitutes the hanging and running area of ​​the first mobile load-bearing platform, and the area between the two vertical steel partitions located in the middle and the right constitutes the hanging and running area of ​​the second mobile load-bearing platform.

[0012] Furthermore, buffer devices are provided on the right side surface of the vertical steel partition located on the left, on both side surfaces of the vertical steel partition located in the middle, and on the left side surface of the vertical steel partition located on the right, and the buffer devices include a bearing bracket and a buffer component, and the buffer component is installed on the vertical steel partition through the bearing bracket.

[0013] Furthermore, it also includes a locking device installed on the second-layer maintenance platform, which is used for locking and positioning when the first movable load-bearing platform and the second movable load-bearing platform are switched to a closed state. The locking device includes a locking pin, a mounting frame and a driving member. The mounting frame is fixedly installed on the second-layer maintenance platform. One end of the driving member is connected to the second-layer maintenance platform, and the other end is connected to the locking pin, which is used to drive the locking pin to move up and down. A vertical positioning guide hole is opened on the mounting frame directly below the locking pin, and a locking hole is opened on the first movable load-bearing platform or the second movable load-bearing platform. When the first movable load-bearing platform and the second movable load-bearing platform are switched to a closed state, the locking pin is driven downward by the driving member, and is positioned in the locking hole after passing through the positioning guide hole.

[0014] Furthermore, an outwardly extending contact iron is provided on the locking pin shaft, and a locking travel switch is installed on the mounting frame. When the locking pin shaft is positioned in the locking hole, the contact iron touches the locking travel switch.

[0015] The utility model has the following beneficial effects:

[0016] The utility model is a suspended open-and-closed maintenance work platform. When it is necessary to perform maintenance or overhaul work on the SkyRail train, the first mobile bearing platform and the second mobile bearing platform are initially in a closed state, and the bogie of the SkyRail train is suspended on the first mobile bearing platform and the second mobile bearing platform. The SkyRail train moves forward to the designated maintenance position and then stops. After stopping, the operator can inspect the equipment on the top of the train on the first-floor maintenance platform and inspect the bogie on the second-floor maintenance platform. When the bogie needs to be replaced, the work trolley is used to carry the car body support tooling to the bottom of the train and adjust the position. After the position is aligned, the car body support tooling is lifted upward. After the whole vehicle is lifted, the operator disassembles the connection between the bogie and the car body, and the lifting equipment lifts the bogie. Then, the first mobile load-bearing platform and the second mobile load-bearing platform are switched to the open state, and the lifting equipment transfers the damaged bogie from the gap between the first mobile load-bearing platform and the second mobile load-bearing platform, and then the new bogie is lifted to the upper part of the train, and the first mobile load-bearing platform and the second mobile load-bearing platform are switched to the closed state, and the new bogie falls on the track of the first and second mobile load-bearing platforms, and the operator installs the new bogie on the roof of the train, and the skyrail train after maintenance drives out of the maintenance platform. By placing the running device on top, the operating space of the first and second maintenance platforms is increased, and the running beam is used as the main load-bearing component. Due to the ample space above, the space limitation below is avoided, and it is convenient to increase the size of the running beam to improve the load stability, thereby improving the stability of the train running and the running of the load-bearing platform, and at the same time, the wheelbase of the running device is increased, so that the load point of the skyrail vehicle on the load-bearing platform acts between the wheelbase of the running device, further improving the overall stability of the platform, and when performing maintenance operations on freight heavy-load skyrail trains, the platform can be effectively prevented from overturning, greatly improving the safety of the operation.

[0017] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 It is an axonometric schematic diagram of a suspended and travelled open and close type maintenance work platform according to a preferred embodiment of the utility model.

[0020] Figure 2 It is a schematic structural diagram of a running device of a preferred embodiment of the utility model.

[0021] Figure 3 It is a top view schematic diagram of a suspended and traveling open and close type maintenance work platform according to a preferred embodiment of the utility model.

[0022] Figure 4 It is a structural schematic diagram of a running beam of a preferred embodiment of the utility model.

[0023] Figure 5 It is a structural schematic diagram of a buffer device of a preferred embodiment of the utility model.

[0024] Figure 6 It is a structural schematic diagram of a locking device of a preferred embodiment of the utility model.

[0025] Figure 7 It is a structural schematic diagram of a load-bearing platform of a preferred embodiment of the utility model.

[0026] Description of Reference Numerals

[0027] 1. Steel frame; 2. First-floor maintenance platform; 3. First mobile load-bearing platform; 4. Second mobile load-bearing platform; 5. Second-floor maintenance platform; 6. Traveling beam; 7. Traveling device; 8. Locking device; 9. Locking hole; 10. Third mobile load-bearing platform; 11. Fourth mobile load-bearing platform; 71. Traveling frame; 72. Traveling wheels; 73. Load-bearing columns; 74. Guide wheel assembly; 61. Left steel plate; 62. Right steel plate; 63. Bottom steel plate; 64. Top steel plate; 65. Horizontal steel partition; 66. Vertical steel partition; 67. Buffer device; 68. Load-bearing bracket; 69. Buffer; 81. Locking pin; 82. Mounting frame; 83. Positioning guide hole; 84. Iron contact; 85. Locking travel switch. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] Reference Figure 1The preferred embodiment of the present application provides an open and close maintenance work platform with hanging travel, including a steel frame 1, a first-layer maintenance platform 2, a first mobile load-bearing platform 3, a second mobile load-bearing platform 4, a second-layer maintenance platform 5, a running beam 6 and a running device 7. The steel frame 1 is fixedly installed on the ground, the first-layer maintenance platform 2 is fixed on the steel frame 1, the running beam 6 is fixed on the steel frame 1 and is located above the first-layer maintenance platform 2, the first mobile load-bearing platform 3 and the second mobile load-bearing platform 4 are respectively hung and installed on the running beam 6 movably along their width directions through the running device 7, so that the first mobile load-bearing platform 3 and the second mobile load-bearing platform 4 can switch between an open state and a closed state, in a closed state, the bogie of the train is suspended on the first mobile load-bearing platform 3 and the second mobile load-bearing platform 4, in an open state, the bogie of the train can be transported out from the gap between the first mobile load-bearing platform 3 and the second mobile load-bearing platform 4, and the second-layer maintenance platform 5 is fixed on the steel frame 1 and is located above the first mobile load-bearing platform 3 and the second mobile load-bearing platform 4. Specifically, the steel frame 1 is composed of multiple rows of columns, each row includes two columns arranged in parallel, each column is fixedly installed on the foundation, the first-layer maintenance platform 2 is welded on the columns of the steel frame 1 by channel steel and steel plates, and a safety fence is installed on the outside of the first-layer maintenance platform 2 to play a safety protection role. The operator can perform maintenance work on the top equipment of the train on the first-layer maintenance platform 2. The running beam 6 is integrally welded by steel plates and integrally installed on the reserved mounting seat inside the column of the steel frame 1. Of course, in other embodiments of the present invention, the running beam 6 can also be integrally formed with the two parallel columns of the steel frame 1. The first mobile load-bearing platform 3 and the second mobile load-bearing platform 4 are respectively suspended and installed on the running beam 6 through the running device 7, and can move along the width direction of the running beam 6, so that the first mobile load-bearing platform 3 and the second mobile load-bearing platform 4 can switch between an open state and a closed state. The first mobile load-bearing platform 3 and the second mobile load-bearing platform 4 are installed with tracks for the skyrail train to run. When the first mobile load-bearing platform 3 and the second mobile load-bearing platform 4 are switched to a closed state, the bogie of the train is suspended on the first mobile load-bearing platform 3 and the second mobile load-bearing platform 4, and when the first mobile load-bearing platform 3 and the second mobile load-bearing platform 4 are switched to an open state, the bogie of the train can be transported out from the gap between the first mobile load-bearing platform 3 and the second mobile load-bearing platform 4. Among them, the first mobile load-bearing platform 3 and the second mobile load-bearing platform 4 are symmetrically arranged. The second-layer maintenance platform 5 is welded on the column of the steel frame 1 by channel steel and steel plate. A safety fence is also installed on the outside of the second-layer maintenance platform 5. The second-layer maintenance platform 5 is located above the first mobile load-bearing platform 3 and the second mobile load-bearing platform 4, so that the operators can inspect the bogie.

[0030] It can be understood that when it is necessary to perform maintenance or overhaul operations on the skyrail train, the first mobile supporting platform 3 and the second mobile supporting platform 4 are initially in a closed state, and the bogie of the skyrail train is suspended on the first mobile supporting platform 3 and the second mobile supporting platform 4. The skyrail train moves forward to the designated maintenance position and then stops. After stopping, the operator can inspect the equipment on the top of the train on the first-floor maintenance platform 2 and inspect the bogie on the second-floor maintenance platform 5. When the bogie needs to be replaced, the work trolley is used to carry the car body support tooling to the bottom of the train and adjust the position. After the position is aligned, the car body support tooling is lifted upward, and the whole vehicle is slightly lifted. Then the operator disassembles the connection between the bogie and the car body, and the lifting equipment lifts the bogie. Then, the first mobile load-bearing platform 3 and the second mobile load-bearing platform 4 are switched to an open state, the lifting equipment transfers the damaged bogie from the gap between the first mobile load-bearing platform 3 and the second mobile load-bearing platform 4, and then the new bogie is lifted to the upper part of the train, the first mobile load-bearing platform 3 and the second mobile load-bearing platform 4 are switched to a closed state, the new bogie falls on the tracks of the first and second mobile load-bearing platforms, the operating personnel install the new bogie on the roof of the train, and the skyrail train after maintenance drives out of the maintenance platform.

[0031] It can be understood that the suspended open and close maintenance work platform of the present embodiment increases the working space of the first-layer maintenance platform 2 and the second-layer maintenance platform 5 by placing the running device 7 upward, and makes the running beam 6 as the main load-bearing component. Due to the ample space above, the space limitation below is avoided, and it is convenient to improve the load-bearing stability by increasing the size of the running beam 6, thereby improving the stability of the train running and the carrying platform running. At the same time, the wheelbase of the running device 7 is increased, so that the load point of the skyrail vehicle on the carrying platform acts between the wheelbase of the running device 7, further improving the overall stability of the platform. When performing maintenance operations on heavy-loaded freight skyrail trains, the platform can be effectively prevented from overturning, greatly improving the operation safety.

[0032] It is understandable that Figure 2As shown, the running device 7 includes a running frame 71, running wheels 72 and a bearing column 73. The running frame 71 is fixedly connected to the first mobile bearing platform 3 or the second mobile bearing platform 4 through the bearing column 73. Two pairs of the running wheels 72 are installed on the running frame 71 at intervals along the width direction of the running beam 6, and each pair of the running wheels 72 is installed symmetrically on both sides of the running beam 6. Specifically, the bearing column 73 is located below the running frame 71, and the top end of the bearing column 73 is fixedly connected to the running frame 71, and the bottom end is fixedly connected to the first mobile bearing platform 3 or the second mobile bearing platform 4, so that the running frame 71 can drive the bearing platform to move. A total of four running wheels 72 are arranged on the running frame 71, which are symmetrically arranged in pairs, wherein two running wheels 72 are symmetrically installed on both sides of the running beam 6, and the two pairs of running wheels 72 are arranged at intervals along the width direction of the running beam 6, so that the running frame 71 is suspended and installed on the running beam 6 and can move along its width direction, thereby driving the first mobile supporting platform 3 and the second mobile supporting platform 4 to switch between an open state and a closed state.

[0033] Among them, combined Figure 3 As shown, the first mobile bearing platform 3 and the second mobile bearing platform 4

[0034] Three running devices 7 are installed, wherein an active running device 7 is respectively arranged at both ends of the load-bearing platform, and a passive running device 7 is arranged in the middle of the load-bearing platform. Optionally, the running wheels 72 on the active running device 7 are powered wheels, which can drive the running frame 71 to move along the width direction. In addition, the active running device 7 also includes a guide wheel assembly 74 installed on the running frame 71. The guide wheel assembly 74 of the entire platform is symmetrically installed, which can provide a centering horizontal force for the movement of the two load-bearing platforms, thereby avoiding the generation of oblique rails when the two load-bearing platforms are running. In addition, different numbers of running devices 7 can be selected to be installed on the first mobile load-bearing platform 3 and the second mobile load-bearing platform 4 according to the lengths of the platforms.

[0035] Optionally, the suspended open and close maintenance work platform also includes a driving device (not shown) for driving the active traveling device 7 to move relative to the traveling crossbeam 6. The driving device specifically includes a driving electric cylinder, a cylinder mounting seat, a piston rod mounting seat and an electric cylinder controller. The cylinder mounting seat is fixed on the column of the steel frame 1, and the piston rod mounting seat is fixed on the traveling frame 71. One end of the driving electric cylinder is mounted on the cylinder mounting seat and the other end is mounted on the piston rod mounting seat. When the piston rod of the driving electric cylinder is extended, the first mobile bearing platform 3 and the second mobile bearing platform 4 move toward each other to switch to the closed state. When the piston rod of the driving electric cylinder is retracted, the first mobile bearing platform 3 and the second mobile bearing platform 4 move back to back to switch to the open state. The driving electric cylinder has a built-in displacement sensor that communicates with the electric cylinder controller in real time. The electric cylinder controller can control the telescopic stroke of the driving electric cylinder according to the detection result of the displacement sensor to control the first mobile bearing platform 3 and the second mobile bearing platform 4 to accurately move to the positioning point of the open state or the closed state, and has a good multi-drive synchronous movement effect. In addition, the driving electric cylinder has a manual driving interface. When the driving electric cylinder fails, the operator can manually control the driving electric cylinder for emergency reset. Of course, in other embodiments, the driving device can also use a linear driving device such as a gear rack driving mechanism, a screw nut driving mechanism, a hydraulic cylinder, etc. Among them, when the hanging and traveling open and closed maintenance work platform includes a driving device, the traveling wheels 72 can use non-powered wheels.

[0036] Optionally, a sensing element is provided on the running frame 71, and a position switch is provided on the running beam 6. When the first mobile supporting platform 3 and the second mobile supporting platform 4 move to the positioning point during the opening or closing process, the position switch senses the sensing element and sends a feedback signal, so as to monitor whether the first mobile supporting platform 3 and the second mobile supporting platform 4 are switched to the open state or the closed state. When the position sensor or circuit of the driving electric cylinder fails, the platform opening and closing state can still be monitored.

[0037] Optionally, the hanging and moving open and close maintenance operation platform further includes a third mobile bearing platform 10 and a fourth mobile bearing platform 11, wherein the third mobile bearing platform 10 and the first mobile bearing platform 3 are arranged in a straight line, and the fourth mobile bearing platform 11 and the second mobile bearing platform 4 are arranged in a straight line, and the third mobile bearing platform 10 and the fourth mobile bearing platform 11 are symmetrically arranged, and the length of the third mobile bearing platform 10 and the fourth mobile bearing platform 11 is shorter than the length of the first mobile bearing platform 3 and the second mobile bearing platform 4, and the two ends of the third mobile bearing platform 10 and the fourth mobile bearing platform 11 are movably hung and installed on the running beam 6 along the width direction through an active running device 7. When a large-area bogie maintenance operation is required, the first mobile bearing platform 3 and the second mobile bearing platform 4 are used for opening and closing operations, and when a small-area bogie maintenance operation is required, the third mobile bearing platform 10 and the fourth mobile bearing platform 11 are used for opening and closing operations, thereby realizing the regional operation of the bearing platform, and the maintenance operation method is more flexible.

[0038] It is understandable that Figure 4As shown, the running beam 6 includes a left steel plate 61, a right steel plate 62, a bottom steel plate 63, a top steel plate 64, a transverse steel partition 65 and a vertical steel partition 66. The left steel plate 61, the right steel plate 62, the bottom steel plate 63 and the top steel plate 64 together form a double-web H steel structure. The transverse steel partition 65 is arranged on the width direction of the double-web H steel structure. The central axis to symmetrically divide the enclosed area of ​​the double-web H steel structure into front and rear sides, and the front and rear sides of the transverse steel partition 65 are symmetrically spaced along the width direction of the double-web H steel structure. The vertical steel partitions 66, that is, the front side of the horizontal steel partition 65 is provided with three vertical steel partitions 66 at intervals along the width direction, and the rear side of the horizontal steel partition 65 is also provided with three vertical steel partitions 66 at intervals along the width direction, and the two vertical steel partitions 66 at the corresponding positions of the front and rear sides are symmetrically arranged, and the area between the two vertical steel partitions 66 located on the left and the middle constitutes the hanging and running area of ​​the first mobile bearing platform 3, and the area between the two vertical steel partitions 66 located in the middle and the right constitutes the hanging and running area of ​​the second mobile bearing platform 4. Among them, each pair of running wheels 72 corresponding to the first mobile bearing platform 3 is symmetrically suspended between the two vertical steel partitions 66 on the left and the middle, and each pair of running wheels 72 corresponding to the second mobile bearing platform 4 is symmetrically suspended between the two vertical steel partitions 66 in the middle and the right. Optionally, a buffer device 67 is provided on the right side surface of the vertical steel partition 66 on the left, on both side surfaces of the vertical steel partition 66 in the middle, and on the left side surface of the vertical steel partition 66 on the right. When the first mobile load-bearing platform 3 and the second mobile load-bearing platform 4 move to the positioning point during the opening or closing process, the buffer device 67 is used to buffer the running wheels 72 to avoid collision damage to the platform. Figure 5 As shown, the buffer device 67 includes a bearing bracket 68 and a buffer member 69. The buffer member 69 is installed on the vertical steel partition 66 through the bearing bracket 68. The buffer member 69 can be a round, spherical, cylindrical, spherical or ellipsoidal rubber member.

[0039] Optionally, the suspended open-close maintenance work platform further includes a locking device 8 installed on the second-layer maintenance platform 5, which is used to lock and position the first mobile load-bearing platform 3 and the second mobile load-bearing platform 4 when they are switched to the closed state. Figure 6 and Figure 7As shown, the locking device 8 includes a locking pin 81, a mounting frame 82 and a driving member. The mounting frame 82 is fixedly mounted on the second-layer maintenance platform 5. One end of the driving member is connected to the second-layer maintenance platform 5 and the other end is connected to the locking pin 81, which is used to drive the locking pin 81 to move up and down. A vertical positioning guide hole 83 is provided on the mounting frame 82 just below the locking pin 81. A locking hole 9 is provided on the first mobile bearing platform 3 or the second mobile bearing platform 4. The locking hole 9 is specifically arranged on one side of the column close to the steel frame 1. When the first mobile bearing platform 3 and the second mobile bearing platform 4 are switched to the closed state, the locking pin 81 is driven downward by the driving member, and is positioned in the locking hole 9 after passing through the positioning guide hole 83. In addition, an outwardly extending touch iron 84 is provided on the locking pin 81, and a locking travel switch 85 is installed on the mounting frame 82. When the locking pin 81 is positioned in the locking hole 9, the touch iron 84 touches the locking travel switch 85.

[0040] It can be understood that when the first mobile load-bearing platform 3 and the second mobile load-bearing platform 4 are switched to the closed state, the control driving member drives the locking pin 81 to move downward, passes through the positioning guide hole 83 and is positioned in the locking hole 9. At this time, the iron 84 touches the locking stroke switch 85, and the feedback locking device 8 is in a locked state, and the control driving member stops the action. At this time, the impact load of the sky rail train on the load-bearing platform is borne by the locking pin 81, the positioning guide hole 83 and the locking hole 9. When the first mobile load-bearing platform 3 and the second mobile load-bearing platform 4 need to be switched to the open state, the control driving member needs to first drive the locking pin 81 to move upward, separate the locking pin 81 from the locking hole 9, make the locking device 8 in an unlocked state, and then drive the first mobile load-bearing platform 3 and the second mobile load-bearing platform 4 to open. Among them, the driving member can adopt a linear drive device such as an electric cylinder, a cylinder, a gear rack drive mechanism, a screw nut drive mechanism, and of course, a manual method can also be adopted.

[0041] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A hanging and moving open and close maintenance work platform, characterized in that: The invention comprises a steel frame (1), a first-layer maintenance platform (2), a first mobile bearing platform (3), a second mobile bearing platform (4), a second-layer maintenance platform (5), a running beam (6) and a running device (7), wherein the steel frame (1) is fixedly installed on the ground, the first-layer maintenance platform (2) is fixed on the steel frame (1), the running beam (6) is fixed on the steel frame (1) and is located above the first-layer maintenance platform (2), and the first mobile bearing platform (3) and the second mobile bearing platform (4) are respectively suspended and installed on the first-layer maintenance platform (2) in a movably manner in their width direction via the running device (7). The first movable support platform (3) and the second movable support platform (4) are mounted on the running beam (6) so that the first movable support platform (3) and the second movable support platform (4) can be switched between an open state and a closed state. In the closed state, the bogie of the train is suspended on the first movable support platform (3) and the second movable support platform (4). In the open state, the bogie of the train can be transported out from the gap between the first movable support platform (3) and the second movable support platform (4). The second-floor maintenance platform (5) is fixed on the steel frame (1) and is located above the first movable support platform (3) and the second movable support platform (4).

2. The hanging and moving open and close maintenance work platform according to claim 1 is characterized in that: The running device (7) comprises a running frame (71), running wheels (72) and supporting columns (73); the running frame (71) is fixedly connected to the first mobile supporting platform (3) or the second mobile supporting platform (4) via the supporting columns (73); two pairs of the running wheels (72) are installed on the running frame (71) at intervals along the width direction of the running beam (6), and each pair of the running wheels (72) is symmetrically installed on both sides of the running beam (6).

3. The hanging and moving open and close maintenance work platform according to claim 2 is characterized in that: The first mobile carrying platform (3) and the second mobile carrying platform (4) are both equipped with three running devices (7), wherein an active running device (7) is respectively arranged at both ends of the carrying platform, and a passive running device (7) is arranged in the middle of the carrying platform.

4. The hanging and moving open and close maintenance work platform according to claim 3 is characterized in that: The active running device (7) also includes a guide wheel assembly (74) installed on the running frame (71) and used to provide a centering horizontal force for the movement of the carrying platform.

5. The hanging and moving open and close maintenance work platform according to claim 3 is characterized in that: It also includes a driving device for driving an active running device (7) to move relative to the running beam (6).

6. The hanging and moving open and close maintenance work platform according to claim 2 is characterized in that: The running frame (71) is provided with a sensing element, and the running beam (6) is provided with a position switch. When the first movable supporting platform (3) and the second movable supporting platform (4) move to a positioning point during the process of opening or closing, the position switch senses the sensing element and sends a feedback signal.

7. The hanging and moving open and close maintenance work platform according to claim 1 is characterized in that: The running crossbeam (6) comprises a left steel plate (61), a right steel plate (62), a bottom steel plate (63), a top steel plate (64), a transverse steel partition (65) and a vertical steel partition (66). The left steel plate (61), the right steel plate (62), the bottom steel plate (63) and the top steel plate (64) together form a double-web H steel structure. The transverse steel partition (65) is arranged on the central axis of the double-web H steel structure in the width direction to symmetrically divide the enclosed area of ​​the double-web H steel structure into front and rear sides. Three vertical steel partitions (66) are symmetrically arranged on the front and rear sides of the transverse steel partition (65) along the width direction of the double-web H steel structure. The area between the two vertical steel partitions (66) located on the left and middle parts constitutes the hanging running area of ​​the first mobile bearing platform (3), and the area between the two vertical steel partitions (66) located in the middle and on the right side constitutes the hanging running area of ​​the second mobile bearing platform (4).

8. The hanging and moving open and close maintenance work platform according to claim 7 is characterized in that: A buffer device (67) is provided on the right side surface of the vertical steel partition (66) located on the left, on both side surfaces of the vertical steel partition (66) located in the middle, and on the left side surface of the vertical steel partition (66) located on the right. The buffer device (67) includes a bearing bracket (68) and a buffer component (69). The buffer component (69) is installed on the vertical steel partition (66) through the bearing bracket (68).

9. The hanging and moving open and close type maintenance work platform according to claim 1, characterized in that: The invention also comprises a locking device (8) installed on the second-layer maintenance platform (5), which is used for locking and positioning when the first movable load-bearing platform (3) and the second movable load-bearing platform (4) are switched to a closed state. The locking device (8) comprises a locking pin (81), a mounting frame (82) and a driving member. The mounting frame (82) is fixedly installed on the second-layer maintenance platform (5). One end of the driving member is connected to the second-layer maintenance platform (5), and the other end is connected to the locking pin (81), which is used for driving the locking pin (81) to move up and down. A vertical positioning guide hole (83) is provided on the mounting frame (82) directly below the locking pin (81). A locking hole (9) is provided on the first movable load-bearing platform (3) or the second movable load-bearing platform (4). When the first movable load-bearing platform (3) and the second movable load-bearing platform (4) are switched to a closed state, the locking pin (81) is driven downward by the driving member, passes through the positioning guide hole (83), and is positioned in the locking hole (9).

10. The hanging and moving open and close type maintenance work platform according to claim 9, characterized in that: The locking pin shaft (81) is provided with an outwardly extending contact iron (84), and the mounting frame (82) is provided with a locking travel switch (85). When the locking pin shaft (81) is positioned in the locking hole (9), the contact iron (84) touches the locking travel switch (85).

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