Railway supporting rotary frame, operation platform and control method of railway supporting rotary frame

Abstract

The invention provides a railway supporting rotary frame, a work platform and a control method of the work platform, and belongs to the technical field of railway aerial work platforms. Comprising a rotary table, a first rotary bearing, a first rotary speed reducer, a second rotary bearing, a second rotary speed reducer, a bearing base and a supporting device, the rotary table is installed on the bearing base through the first rotary support, the second rotary support is installed on one side of the upper surface of the rotary table, and when the first rotary support drives the rotary table to rotate to a preset position, the second rotary support provided with the high-altitude lifting device rotates to the side from the lower portion of the track overhead line system; the supporting devices are installed at the four corners of the rotary table. Through rotation of the rotary table, the high-altitude lifting device is conveyed to the side of the track overhead line system for net winding operation, and stepless angle adjustment of the high-altitude lifting device can be achieved in a safe operation space; in addition, equipment leveling is achieved through the supporting device, and stable supporting is provided during net winding operation.

Description

Technical Field

[0001] The present invention relates to a railway supporting rotary frame, an operating platform and a control method thereof, and belongs to the technical field of railway aerial operating platforms. Background Art

[0002] The rapid development of high-speed railways and subways has placed high demands on construction quality and efficiency. At the same time, labor costs have also increased rapidly. Now, a large amount of professional equipment is needed to complete high-altitude operations above the railway. When conducting related inspections and maintenance construction of the railway contact network and bridges crossing the contact network, it is necessary to have equipment suitable for high-altitude manned operations on the railway line to transport construction personnel to high altitudes for high-altitude operations. However, in addition to normal inspections, when equipment and components need to be repaired or replaced, unlike ordinary construction environments where cranes can be equipped to lift equipment and components, it is not convenient to equip multiple equipment for operations at the same time in most environments on the railway line. Therefore, the load capacity of the railway aerial work platform for high-altitude manned operations must not only be able to carry operators but also sufficient maintenance equipment and components.

[0003] The following challenges exist regarding the working environment: The characteristics of railway tracks make them significantly different from ordinary ground. Tracks and sleepers divide the railway line into different longitudinal zones, and the ground is also uneven, preventing large-scale equipment from crossing the line during construction. This prevents large equipment from directly squeezing or damaging the roadbed and track associated with the railway tracks. Furthermore, electrified lines are now widely available, and overhead equipment such as contact wires, load-bearing cables, and booms are located above the lines. Furthermore, overhead equipment such as catenary columns and tension compensation devices also exist. When inspecting and maintaining the railway overhead line and the numerous high-altitude facilities above it, such as bridges and stations, it is necessary to avoid these various devices above the railway lines. With these devices interfering, high-altitude lifting operations must be completed within limited space, and accidental collisions must be avoided during the operation. Therefore, avoiding the various devices above and to the sides of the electrified lines during high-altitude railway operations is a major challenge. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a railway support revolving frame, an operating platform and a control method thereof, which solves the problem of difficulty in avoiding various equipment above and on the sides of electrified lines during high-altitude railway operations.

[0005] To achieve the above object, the present invention is implemented by adopting the following technical solutions: In the first aspect, the present invention provides a railway support revolving frame, comprising: a turntable, a first slewing bearing, a first slewing reducer, a second slewing bearing, a second slewing reducer, a bearing base and a supporting device; the turntable is mounted on the bearing base through the first slewing bearing; the gears of the first slewing reducer and the first slewing bearing are engaged with each other; the second slewing bearing is mounted on one side of the upper surface of the turntable, and is used to install a high-altitude lifting device required for the track contact network winding operation; when the first slewing bearing drives the turntable to rotate to a preset position, the second slewing bearing on which the high-altitude lifting device is installed rotates from the bottom of the track contact network to the side to realize the winding operation; the gears of the second slewing reducer and the second slewing bearing are engaged with each other; one end of the supporting device is mounted on the turntable, and the other end is a supporting part, which is used to realize the leveling of the railway support revolving frame before the track contact network winding operation, and provide stable support for the railway support revolving frame during the track contact network winding operation.

[0006] In combination with the first aspect, optionally, support devices are provided at the four top corners of the turntable; the support device includes: fixed legs, horizontal telescopic legs, horizontal telescopic cylinders and vertical legs; the fixed legs are welded and fixed to the inside of the turntable, and adopt a hollow structure to provide support and guidance for the horizontal telescopic legs; the cylinder barrel of the horizontal telescopic cylinder is fixed to the inside of the fixed legs, and its movable end is hinged to the horizontal telescopic legs to achieve horizontal span expansion of the support device; the main part of the vertical legs is the vertical leg cylinder, and its cylinder barrel is fixed to the end of the horizontal telescopic legs, and the movable end of the vertical leg cylinder serves as a support part.

[0007] In combination with the first aspect, optionally, a through hole is provided in a vertical direction at the end of the horizontal telescopic leg, and the cylinder barrel of the vertical leg cylinder is fixed in the through hole.

[0008] In combination with the first aspect, optionally, a locking device is provided on the bearing base for locking the railway supporting revolving frame on the rail transport vehicle.

[0009] In a second aspect, the present invention provides an operating platform configured with the railway-supported revolving frame as described in the first aspect, further comprising: a hydraulic drive system, a controller, a sensor group, and a high-altitude lifting device.

[0010] The hydraulic drive system includes: a hydraulic pump station, an upper vehicle hydraulic reversing valve and an lower vehicle hydraulic reversing valve; the hydraulic pump station provides high-pressure oil for the upper vehicle hydraulic reversing valve and the lower vehicle hydraulic reversing valve; the upper vehicle hydraulic reversing valve is used to control the winding operation of the high-altitude lifting device and the second slewing bearing during the track contact network winding operation; the lower vehicle hydraulic reversing valve is used to control the operation of the first slewing bearing and the supporting device of the railway supporting slewing frame before the track contact network winding operation; the sensor group is used to measure the action data of the turntable, the supporting device and the high-altitude lifting device, and send the action data to the controller; the controller is used to receive the action data measured by the sensor group, and send control instructions to the upper vehicle hydraulic reversing valve and the lower vehicle hydraulic reversing valve according to the action data.

[0011] When the working platform is in the initial state, the upper vehicle hydraulic reversing valve and the lower vehicle hydraulic reversing valve are both in the locked state, the first slewing bearing and the second slewing bearing do not rotate, and the high-altitude lifting device is placed on the slewing platform in a fully retracted and non-raised posture.

[0012] In combination with the second aspect, optionally, the sensor group includes: a first angle sensor for measuring the rotation angle of the first slewing bearing; a second angle sensor for measuring the rotation angle of the second slewing bearing; a horizontal telescopic length sensor for measuring the extension length of the horizontal telescopic leg; and a vertical leg oil pressure sensor for measuring the oil pressure of the vertical leg cylinder.

[0013] In the third aspect, the present invention provides a control method for the working platform as described in the second aspect, after the rail transport vehicle carries the working platform to the target working location, the controller performs the following steps: real-time acquisition of motion data measured by the sensor group; unlocking the disembarkation hydraulic reversing valve; issuing a control instruction to the disembarkation hydraulic reversing valve, first controlling the rotation of the first slewing bearing, driving the turntable to a preset position, so that the second slewing bearing on which the high-altitude lifting device is installed is rotated from the bottom of the track contact network to the side; then controlling the action of the support device of the railway supporting slewing frame, using the motion data to control the support device to form a stable support at the preset support point; locking the disembarkation hydraulic reversing valve, and unlocking the onboard hydraulic reversing valve; issuing a control instruction to the onboard hydraulic reversing valve to control the high-altitude lifting device to perform the circling operation action.

[0014] In combination with the third aspect, optionally, the control of the movement of the support device of the railway supporting revolving frame and the use of movement data to control the support device to form a stable support at a preset support point include: controlling the movement of the horizontal telescopic cylinder to drive the horizontal telescopic leg to extend; in response to the extension length of the horizontal telescopic leg reaching a preset safety span, controlling the horizontal telescopic cylinder to maintain the current state; controlling the movement of the vertical leg cylinder to drive the vertical leg to extend; in response to the cylinder oil pressure measured by the vertical leg oil pressure sensor reaching a preset oil pressure value, controlling the vertical leg cylinder to maintain the current state.

[0015] In combination with the third aspect, optionally, before the support device controlling the railway-supported revolving frame moves, it also includes: unlocking the locking device on the load-bearing base so that after the support device forms a stable support at a preset support point, the working platform of the railway-supported revolving frame is completely separated from the rail transport vehicle.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The railway support revolving frame provided by the present invention, on the one hand, rotates the high-altitude lifting device from under the contact network of the track to the side through the rotation of the turntable, avoids the contact network of the track to perform winding operations, and can also realize stepless angle adjustment of the high-altitude lifting device in a safe working space; on the other hand, the equipment leveling in uneven scenes is realized through the support device. Whether it is erected between the platform and the railway or supported on an uneven roadbed, the railway support revolving frame can be leveled. At the same time, it provides stable support for the railway support revolving frame and the high-altitude lifting device thereon during winding operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an overall structural diagram of the railway support revolving frame in Example 1 of the present invention; Figure 2 This is a detailed view of the first slewing bearing in Example 1 of the present invention; Figure 3 is a front view of the railway supporting revolving frame in Example 1 of the present invention; Figure 4 This is a front view of the railway supporting revolving frame in Example 1 of the present invention working close to the platform; Figure 5 is a front view of the working platform in the initial state in Example 2 of the present invention; Figure 6 This is an overall diagram of the working platform in the working state in Example 2 of the present invention; Figure 7 This is a schematic diagram of the control connections of the work platform in Example 2 of the present invention; In the figure: 1 is the railway supporting slewing frame, 1-1 is the slewing platform, 1-2 is the first slewing bearing, 1-3 is the first slewing reducer, 1-4 is the fixed support leg, 1-5 is the horizontal telescopic support leg, 1-6 is the horizontal telescopic oil cylinder, 1-7 is the vertical support leg, 1-8 is the second slewing reducer, 1-9 is the second slewing bearing, 2 is the bearing base, 3-1 is the hydraulic pump station, 3-2 is the hydraulic reversing valve for getting on the vehicle, and 3-3 is the hydraulic reversing valve for getting off the vehicle; 4-1 is the controller, 4-2 is the first angle sensor, 4-3 is the horizontal telescopic length sensor, 4-4 is the vertical support leg oil pressure sensor, 4-5 is the second angle sensor, and 5 is the high-altitude lifting device. DETAILED DESCRIPTION

[0018] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or that are inherent to these processes, methods, products or devices. The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the embodiments described are only a part of the embodiments of the present application, rather than all of the embodiments. Example 1

[0019] This embodiment provides a railway support revolving frame 1, comprising: a revolving platform 1-1, a first revolving bearing 1-2, a first revolving reducer 1-3, a second revolving bearing 1-9, a second revolving reducer 1-8, a bearing base 2 and a supporting device.

[0020] refer to Figure 1 and Figure 2 The turntable 1-1 is installed on the bearing base 2 through the first slewing bearing 1-2, and the first slewing bearing 1-2 is installed at the center of the lower surface of the turntable 1-1; the second slewing bearing 1-9 is installed on the side of the upper surface of the turntable 1-1 away from the center point, and is used to install the high-altitude lifting device 5 required for the track contact network winding operation.

[0021] When the first slewing bearing 1-2 drives the turntable 1-1 to rotate to a preset position, the second slewing bearing 1-9 on which the aerial lifting device 5 is installed rotates from below the contact network of the track to the side to bypass the contact network of the track to realize the bypass operation.

[0022] It should be noted that the distance between the installation point of the second slewing bearing 1-9 and the installation point of the first slewing bearing 1-2 is set according to key parameters such as the track spacing and the horizontal pull-out value of the contact network wire, so as to ensure that when the first slewing bearing 1-2 drives the turntable 1-1 to rotate to a preset position, the second slewing bearing 1-9 and the high-altitude lifting device 5 thereon can be sent to the outside of the contact network of this track.

[0023] In some specific embodiments, the installation point of the second slewing bearing 1-9 should meet the following requirements: when the turntable 1-1 rotates 90° clockwise or counterclockwise from the initial position, the aerial lifting device 5 is just sent to the side of the track contact network, and can avoid the track contact network for winding operations.

[0024] The gears of the first slewing bearing 1-2 and the first slewing reducer 1-3 are engaged with each other, which can drive the entire railway support slewing frame 1 to rotate, and the gears of the second slewing bearing 1-9 and the second slewing reducer 1-8 are engaged with each other, which can drive the high-altitude lifting device 5 to rotate.

[0025] refer to Figures 1 to 4 In this embodiment, four supporting devices are included, which are respectively installed at the four top corners of the turntable 1-1, and are used to level the railway support turntable frame 1 before the track contact network winding operation, and provide stable support for the railway support turntable frame 1 during the track contact network winding operation.

[0026] In some specific embodiments, the supporting device includes: fixed legs 1-4, horizontal telescopic legs 1-5, horizontal telescopic cylinders 1-6 and vertical legs 1-7.

[0027] The fixed legs 1-4 are welded and fixed inside the turntable 1-1, and adopt a hollow structure to provide support and guidance for the horizontal telescopic legs 1-5; the cylinder barrel of the horizontal telescopic oil cylinder 1-6 is fixed inside the fixed legs 1-4, and its movable end is hinged to the horizontal telescopic legs 1-5 to achieve the span expansion of the support device in the horizontal direction.

[0028] The main part of the vertical support leg 1-7 is the vertical support leg oil cylinder, the cylinder barrel of which is fixed to the end of the horizontal telescopic support leg 1-5, and the movable end of the vertical support leg oil cylinder serves as a support part.

[0029] In some embodiments, a through hole is opened in the vertical direction at the end of the horizontal telescopic legs 1-5, and the inner diameter of the through hole matches the outer diameter of the vertical leg cylinder barrel, just fixing the vertical leg cylinder barrel in the through hole.

[0030] In some specific embodiments, the movable ends of the vertical leg cylinders are equipped with ball-jointed feet to facilitate the stable support of the vertical legs 1-7 on railway sleepers, track plates or other solid ground.

[0031] The bearing base 2 is in direct contact with the rail transport vehicle. When in use, the bearing base 2 is placed flat on the rail transport vehicle.

[0032] In some embodiments, a locking device is provided on the support base 2 for locking the railway support slewing frame 1 to the rail transport vehicle. The locking device on the support base 2 is unlocked before the support device is activated. Once the support device is stably supported at the work site, the support base 2 can be completely separated from the rail transport vehicle.

[0033] The railway support revolving frame 1 provided in this embodiment is fixed to a rail transport vehicle by a locking device. Conventional aerial work equipment is installed on the railway support revolving frame 1 and is transported to a target rail work point by the rail transport vehicle. The railway support revolving frame 1 can achieve the following functions: First, the support device can achieve equipment leveling in uneven scenes. Whether it is erected between the platform and the railway or supported on an uneven roadbed, the railway support rotary frame 1 can be leveled in a short time to prevent the equipment from overturning due to unstable center of gravity during high-altitude winding operations. At the same time, it also provides stable support for the railway support rotary frame 1 and the operating equipment thereon during winding operations; Second, the turntable 1-1 rotates to move the second slewing bearing 1-9, which is offset from the center of rotation, and the high-altitude lifting device 5 mounted thereon, from below the contact network to the side, avoiding various electrified equipment above and to the sides of the electrified line. This allows for high-altitude work above the contact network, across bridges, station roofs, and other facilities, without the need for scaffolding or other methods, interrupting line operations, or damaging the railway track or associated roadbed. Furthermore, during the winding operation, the second slewing bearing 1-9 and the second slewing reducer 1-8 cooperate to achieve stepless angle adjustment of the high-altitude lifting device within a safe working space, ensuring efficient and safe construction. Example 2

[0034] Based on Example 1, this example provides a work platform, which is equipped with the railway support revolving frame 1 as described in Example 1, and also includes: a hydraulic drive system, a controller 4-1, a sensor group and a high-altitude lifting device 5.

[0035] In some embodiments, in order to balance the force on the turntable 1 - 1 , the hydraulic drive system and the controller 4 - 1 are installed on the other side of the upper surface of the turntable 1 - 1 , which has the function of balancing the gravity of the high-altitude lifting device 5 .

[0036] refer to Figures 5 to 7In this embodiment, the aerial lifting device 5 is mounted on the second slewing bearing 1-9. The hydraulic drive system includes: a hydraulic pump station 3-1, an upper vehicle hydraulic reversing valve 3-2, and an lower vehicle hydraulic reversing valve 3-3; the hydraulic pump station 3-1 provides high-pressure oil to the upper vehicle hydraulic reversing valve 3-2 and the lower vehicle hydraulic reversing valve 3-3; the upper vehicle hydraulic reversing valve 3-2 is used to control the winding operation of the aerial lifting device 5 during the track contact network winding operation, such as the rotation of the aerial lifting device 5, that is, the movement of the second slewing bearing 1-9 and the second rotary reducer 1-8, as well as the rotation, extension, retraction, lifting and lowering of the aerial lifting device 5; and the lower vehicle hydraulic reversing valve 3-3 is used to control the adjustment movement of the railway support slewing frame 1 before the track contact network winding operation, including: the movement of the first slewing bearing 1-2 and the first rotary reducer 1-3, as well as the extension or retraction of the horizontal telescopic legs 1-5 and the vertical legs 1-7.

[0037] It should be noted that the onboard hydraulic reversing valve 3-2 and the offboard hydraulic reversing valve 3-3 are prohibited from working at the same time.

[0038] When the working platform is in the initial state, the onboard hydraulic reversing valve 3-2 and the offboard hydraulic reversing valve 3-3 are both in a locked state, the first slewing bearing 1-2 and the second slewing bearing 1-9 do not rotate, and the aerial lifting device 5 is placed on the railway support slewing frame 1 in a fully retracted and non-raised posture.

[0039] The sensor group is used to measure the motion data of the first slewing bearing 1-2, the second slewing bearing 1-9 and the supporting device, and send the motion data to the controller 4-1.

[0040] In some embodiments, the sensor group includes: a first angle sensor 4-2 for measuring the rotation angle of the first slewing bearing 1-2, such as Figure 2 As shown, it is installed on one side of the first slewing bearing 1-2; the second angle sensor 4-5 for measuring the rotation angle of the second slewing bearing 1-9 is installed on the top of the second slewing bearing 1-9; the horizontal telescopic length sensor 4-3 for measuring the extension length of the horizontal telescopic leg 1-5 is installed inside the horizontal telescopic leg 1-5, near the horizontal telescopic cylinder 1-6; the vertical leg oil pressure sensor 4-4 for measuring the oil pressure of the vertical leg cylinder is installed on the top of the vertical leg cylinder.

[0041] like Figure 7 As shown, the controller 4-1 is used to receive the motion data measured by the sensor group. It is the core of the control system, realizes the logical operation of the control function, receives the motion data measured by the external sensor group, and sends control instructions to the upper vehicle hydraulic reversing valve 3-2 and the lower vehicle hydraulic reversing valve 3-3 according to the motion data.

[0042] The high-altitude lifting device 5 is installed on the second slewing bearing 1-9, and an aerial work platform is provided at the end thereof. The high-altitude lifting device 5 can be extended or retracted, and can also be raised or lowered to achieve changes in the amplitude and height of the high-altitude lifting. Example 3

[0043] Based on Example 2, this embodiment provides a control method for the work platform described in Example 2. The method is executed by the controller 4-1 after the rail transport vehicle carries the work platform in the initial state to the target work location. The control method includes: Step 1: Obtain motion data measured by the sensor group in real time.

[0044] Before performing the winding operation, during the entire process of control using this method, the controller 4-1 needs to periodically obtain the motion data measured by the external sensor group to grasp the posture of each component of the railway support revolving frame 1 at each moment until the preset operation requirements are met.

[0045] Step 2: Unlock the disembarkation hydraulic reversing valve 3-3; issue a control command to the disembarkation hydraulic reversing valve 3-3.

[0046] After the transport vehicle carries the work platform to the target work site, a support point suitable for support and meeting the safety span is pre-set for each support device.

[0047] The working platform in transport is in the initial state, and both the onboard hydraulic reversing valve 3-2 and the offboard hydraulic reversing valve 3-3 are in the locked state. Therefore, it is necessary to unlock the offboard hydraulic reversing valve 3-3 first so that the offboard hydraulic reversing valve 3-3 can receive the control instruction from the controller 4-1.

[0048] Step 3: Control the first slewing bearing 1-2 to rotate, and drive the turntable 1-1 to a preset position, so that the second slewing bearing 1-9 where the high-altitude lifting device 5 is installed is rotated from the bottom of the track contact network to the side.

[0049] Specifically, the first slewing bearing 1-2 and the first slewing reducer 1-3 are controlled to cooperate to rotate the turntable 1-1 90 degrees relative to the supporting base 2. At this time, the second slewing bearing 1-9 and the high-altitude lifting device 5 are rotated from just below the contact network of the track to the side.

[0050] Step 4: Control the movement of the support device and use the movement data to control the support device to form a stable support at the preset support point.

[0051] In the embodiment where the supporting base 2 is provided with a locking device, the locking device on the supporting base 2 needs to be unlocked before step 4, so that the railway support slewing frame 1 can be separated from the rail transport vehicle. After the locking device is unlocked, the support device can be controlled to provide a stable support, and the rail transport vehicle can then leave the work site or remain in place.

[0052] In some embodiments, step 4 includes: first controlling the horizontal telescopic cylinder 1-6 to move and drive the horizontal telescopic leg 1-5 to extend; controlling the horizontal telescopic cylinder 1-6 to maintain the current state in response to the extension length of the horizontal telescopic leg 1-5 reaching a preset safety span, that is, the end of the horizontal telescopic leg 1-5 reaches above the preset support point; then controlling the vertical leg cylinder to move and drive the vertical leg 1-7 to extend and support at the preset support point, and in response to the cylinder oil pressure measured by the vertical leg oil pressure sensor reaching a preset oil pressure value, controlling the vertical leg cylinder to maintain the current state.

[0053] In some specific embodiments, the preset safety span is 8 to 10 meters.

[0054] Step 5: Lock the lower hydraulic reversing valve 3-3 and unlock the upper hydraulic reversing valve 3-2.

[0055] After the support device achieves stable support, the disembarkation hydraulic reversing valve 3-3 is locked to maintain the support device in a stable support state, and the rotation angle of the turntable 1-1 relative to the supporting base 2 is kept unchanged, so as to avoid accidental contact with the disembarkation control during the boarding operation, causing accidents such as overturning of the working platform, resulting in damage to the electrified lines or injury to workers.

[0056] After the hydraulic reversing valve 3-3 for getting off the vehicle is locked, the worker steps onto the aerial work platform at the end of the aerial lifting device 5 and then unlocks the hydraulic reversing valve 3-2 for getting on the vehicle.

[0057] Step 6: Send a control command to the upper vehicle hydraulic reversing valve 3-2 to perform the winding operation.

[0058] Control the actions of the high-altitude lifting device 5, the second slewing bearing 1-9 and the second slewing reducer 1-8 to send the high-altitude work platform to the high-altitude work point for the winding operation.

[0059] On the one hand, the control method of the present invention eliminates the need for scaffolding or other methods for high-altitude operations, nor does it require interrupting line operations, thus preventing routine maintenance work from affecting normal railway operations. On the other hand, the interlocking logic of the boarding and disembarking controls prevents accidental contact with the disembarking control during operation of the high-altitude lifting device 5, thereby improving the safety of high-altitude railway operations.

[0060] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A railway support revolving frame, comprising: Turntable, first slewing bearing, first slewing reducer, second slewing bearing, second slewing reducer, bearing base and supporting device; The turntable is mounted on the bearing base via the first slewing bearing; The first slewing reducer and the gear of the first slewing bearing are meshed with each other; The second slewing bearing is installed on one side of the turntable and is used to install a high-altitude lifting device required for the track contact network winding operation; when the first slewing bearing drives the turntable to rotate to a preset position, the second slewing bearing installed with the high-altitude lifting device rotates from below the track contact network to the side to realize the winding operation; The second slewing reducer and the gear of the second slewing bearing are meshed with each other; One end of the support device is installed on the turntable, and the other end is a support part, which is used to level the railway support turntable frame before the track contact network winding operation, and provide stable support for the railway support turntable frame during the track contact network winding operation.

2. The railway support revolving frame according to claim 1, characterized in that: The supporting devices are arranged at the four corners of the turntable; The supporting device includes: fixed legs, horizontal telescopic legs, horizontal telescopic oil cylinders and vertical legs; The fixed legs are welded and fixed inside the turntable and adopt a hollow structure to provide support and guidance for the horizontal telescopic legs; The cylinder barrel of the horizontal telescopic oil cylinder is fixed inside the fixed leg, and the movable end thereof is hinged to the horizontal telescopic leg to achieve the span extension of the support device in the horizontal direction; The main part of the vertical support leg is a vertical support leg oil cylinder, the cylinder barrel of which is fixed to the end of the horizontal telescopic support leg, and the movable end of the vertical support leg oil cylinder serves as a supporting part.

3. The railway support revolving frame according to claim 2, characterized in that: A through hole in the vertical direction is provided at the end of the horizontal telescopic support leg, and the cylinder barrel of the vertical support leg oil cylinder is fixed in the through hole.

4. The railway support revolving frame according to claim 1, characterized in that: The bearing base is provided with a locking device for locking the railway supporting rotary frame on the rail transport vehicle.

5. A working platform equipped with a railway supporting revolving frame as claimed in any one of claims 1 to 4, characterized in that: Also includes: hydraulic drive systems, controllers, sensor groups, and aerial lifts; The hydraulic drive system includes: a hydraulic pump station, an onboard hydraulic reversing valve and an offboard hydraulic reversing valve; The hydraulic pump station provides high-pressure oil to the upper and lower hydraulic reversing valves; the upper hydraulic reversing valve is used to control the winding operation of the high-altitude lifting device and the second slewing bearing during the track catenary winding operation; the lower hydraulic reversing valve is used to control the operation of the first slewing bearing and the supporting device of the railway supporting slewing frame before the track catenary winding operation; The said hydraulic reversing valve for getting on the vehicle and the hydraulic reversing valve for getting off the vehicle are prohibited from working at the same time; The sensor group is used to measure the motion data of the turntable, the supporting device and the high-altitude lifting device, and send the motion data to the controller; The controller is used to receive the motion data measured by the sensor group and send control instructions to the upper vehicle hydraulic reversing valve and the lower vehicle hydraulic reversing valve according to the motion data; When the working platform is in the initial state, the upper vehicle hydraulic reversing valve and the lower vehicle hydraulic reversing valve are both in the locked state, the first slewing bearing and the second slewing bearing do not rotate, and the high-altitude lifting device is placed on the slewing platform in a fully retracted and non-raised posture.

6. The working platform according to claim 5, characterized in that: The sensor group includes: A first angle sensor, used for measuring the rotation angle of the first slewing bearing; A second angle sensor is used to measure the rotation angle of the second slewing bearing; Horizontal telescopic length sensor, used to measure the extension length of the horizontal telescopic legs; Vertical outrigger oil pressure sensor, used to measure the oil pressure of the vertical outrigger cylinder.

7. A control method for the work platform according to claim 5, characterized in that: After the rail transport vehicle carries the work platform to the target work location, the controller performs the following steps: Acquire motion data measured by the sensor group in real time; Unlock the hydraulic reversing valve for getting off the vehicle; A control command is issued to the hydraulic reversing valve on the lower vehicle to first control the rotation of the first slewing bearing, driving the turntable to rotate to a preset position, so that the second slewing bearing installed with the high-altitude lifting device is rotated from under the contact network of the track to the side; then the support device of the railway supporting the slewing frame is controlled to move, and the action data is used to control the support device to form a stable support at the preset support point; Lock the hydraulic reversing valve for getting off the vehicle and unlock the hydraulic reversing valve for getting on the vehicle; Send control instructions to the hydraulic reversing valve on the upper vehicle to control the high-altitude lifting device and the second slewing bearing to perform the net-circling operation.

8. The control method according to claim 7, characterized in that: The method of controlling the movement of the support device of the railway supporting revolving frame and using the movement data to control the support device to form a stable support at a preset support point includes: Control the movement of the horizontal telescopic cylinder to drive the horizontal telescopic legs to extend; In response to the extension length of the horizontal telescopic legs reaching a preset safety span, controlling the horizontal telescopic cylinder to maintain the current state; Control the action of the vertical outrigger cylinder to drive the vertical outrigger to extend; In response to the cylinder oil pressure measured by the vertical support leg oil pressure sensor reaching a preset oil pressure value, the vertical support leg cylinder is controlled to maintain the current state.

9. The control method according to claim 7, characterized in that: Before the control of the support device of the railway supporting revolving frame is activated, it also includes: unlocking the locking device on the load-bearing base so that after the support device forms a stable support at the preset support point, the working platform of the railway supporting revolving frame is completely separated from the rail transport vehicle.

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