Lifting and moving working platform with rails and building and structure disassembling method

Abstract

The lifting and moving working platform comprises a bridge frame, a track beam and a track lifting device, the track beam is arranged on the top face of a box type building, the bridge frame is movably connected to the track beam in the length direction of the track beam and used for installing working equipment, and the track lifting device is installed on the bridge frame and comprises a limiting part. The limiting part can limit the track beam in the vertical direction, so that the bridge frame and the track beam can synchronously ascend and descend in the vertical direction while relative movement of the bridge frame and the track beam in the length direction is not interfered, and the bridge frame and the track beam can serve as an integral module to be hoisted and placed. The working platform is reasonable in structural arrangement, convenient to move, high in automation degree and capable of achieving rapid hoisting and mounting, and the working efficiency is improved. The invention further provides a specific building structure disassembling method.

Description

Technical Field

[0001] The invention specifically relates to a rail-lifting mobile working platform and a building dismantling method. Background Art

[0002] As the dismantling and decommissioning of old nuclear facilities in my country continues to advance, the dismantling of some nuclear facilities is imperative. However, the dismantling of nuclear facilities is difficult, mainly because: the internal equipment structure of the facility is complex, and strong equipment is required for dismantling operations; and the facility is tall and deep, so it is necessary to adopt a top-down layer-by-layer dismantling technology route; and due to the high radioactive working environment of nuclear facilities, personnel cannot approach for a long time, and cannot perform normal auxiliary lifting and installation work.

[0003] Since there are generally solid metal (reinforced concrete) box structures for shielding or cooling around such nuclear facilities, working platforms for demolition tools such as manipulators for dismantling the main body of the facility and its annular structures can be installed with the help of the box-type building (or annular box) structure. However, due to radioactive reasons, it is difficult to install a working platform on the surface of a box-type building. And as the facility disintegrates from top to bottom, the box-type building structure also needs to be dismantled layer by layer, otherwise the working distance of the demolition tools will become larger and larger, and the load capacity and working range will be very tight. However, when the box-type building structure is partially dismantled and the height of the installation surface on it is continuously reduced, not only does it need to be frequently hoisted and placed repeatedly on the work platform installed on it, but it also needs to repeatedly build, install and dismantle the track for the work platform to move, which greatly affects the work efficiency and also poses a greater risk of occupational health and safety. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a mobile working platform with rail lifting in view of the above-mentioned deficiencies in the prior art. The working platform has a reasonable structure, is easy to move, has a high degree of automation, and can realize the overall rapid lifting and installation of the working platform and the bearing rail, thereby improving work efficiency. The present invention also provides a method for dismantling a building structure.

[0005] The present invention provides a mobile working platform with rail lifting, comprising a bridge, a track beam and a track lifting device, wherein the track beam is arranged on the top surface of a box-type structure, the bridge is movably connected to the track beam along the length direction of the track beam and is used to install working equipment, the track lifting device is installed on the bridge, and the track lifting device comprises a limiting part, which can limit the track beam in the vertical direction, so that the bridge and the track beam can be synchronously lifted and lowered in the vertical direction without interfering with the relative movement of the bridge and the track beam in the length direction, so as to be hoisted and placed as an integral module.

[0006] Furthermore, the track beam includes a running track and a mounting plate, the running track is connected to the upper surface of the mounting plate, the bridge is movably connected to the running track on the upper surface of the mounting plate, the limiting portion is located on the side of the mounting plate, extends vertically downward from the bridge to below the mounting plate, and the bottom end is horizontally bent to form a hook-shaped end located below the lower surface of the mounting plate, so that the mounting plate is lifted by the hook-shaped end to achieve vertical limitation during lifting.

[0007] Furthermore, the track beam also includes an I-beam, the upper flange plate of the I-beam serves as the mounting plate, the track lifting device is provided with two limiting parts, and is symmetrically arranged relative to the web of the I-beam, so that the two limiting parts hold the mounting plate in a relatively buckled manner, and the spacing between the hook-shaped ends of the two limiting parts is greater than the thickness of the web of the I-beam and less than the width of the mounting plate.

[0008] Furthermore, the rail lifting device also includes a lifting drive device and a mounting seat, the lifting drive device is installed on the bridge frame through the mounting seat, the top end of the limiting part is connected to the vertical driving end of the lifting drive device, and is raised and lowered between the suspension position and the supporting position under the drive of the lifting drive device, when the limiting part is in the suspension position, the hook-shaped end is suspended below the lower surface of the mounting plate, and when it is in the supporting position, the hook-shaped end is in contact with the lower surface of the mounting plate.

[0009] Furthermore, a vertically arranged transverse rib is provided between the upper flange plate and the lower flange plate of the I-beam, the transverse rib is perpendicular to the web, and an avoidance gap is opened in the transverse rib at a first set position in the vertical direction to avoid the hook-shaped end of the limiting part when the bridge moves, and the first set position is the vertical position of the hook-shaped end when the limiting part is in the suspended position.

[0010] Furthermore, there are multiple transverse ribs, each of which is arranged in sequence along the length direction of the track beam, and the arrangement position of each transverse rib avoids the second set position, which is the position of the track lifting device when the bridge frame is located at the center of gravity of the track beam.

[0011] Furthermore, the working platform also includes a fixed base, which is in the shape of a U-shaped structure with an opening facing downward, and the width of the opening gradually decreases from bottom to top. The width of the narrowest part of the opening is greater than the thickness of the side wall of the box-type structure. The top of the fixed base is installed under the track beam, and the bottom is embedded in the top surface of the side wall of the box-type structure through the opening.

[0012] Furthermore, an electromagnetic adsorption device is provided in the fixed base for adsorbing the side walls and top surface of the box-type structure when powered on.

[0013] Furthermore, the fixed base is provided with multiple ones, which are symmetrically distributed below the track beam, and also includes a leveling device, which is a six-degree-of-freedom adjustment mechanism, and the leveling device is installed between the fixed base and the track beam.

[0014] Furthermore, there are two track beams, which are parallel to each other and are respectively arranged on the top surfaces of two opposite side walls of the box-type structure. The bridge spans the box-type structure, and its two ends are movably connected to the two track beams, and each end is provided with at least one track lifting device, and the middle part is used to install working equipment.

[0015] Furthermore, the bridge frame includes a main beam and an end beam, the main beam is perpendicular to the track beam, each end of the main beam is connected to an end beam, the end beam is parallel to the track beam, the two end beams are movably connected to the two track beams respectively, and a track lifting device is provided at both ends of each end beam.

[0016] Furthermore, the working platform also includes a sling for lifting the main beam, the sling has multiple hooks, and the hooks of each hook are oriented in the same direction. The main beam is provided with multiple lifting ears, and the distribution position of each lifting ear on the main beam corresponds to the distribution position of each hook on the sling.

[0017] The present invention also provides a method for dismantling a building structure, wherein a box-type building structure is provided outside the building structure to be dismantled, and the method adopts the above-mentioned belt rail lifting mobile working platform, and the method comprises the following steps:

[0018] S1: Installing the rail-lifting mobile working platform and working equipment on the top surface of the current section of the box-type structure;

[0019] S2: Use working equipment to dismantle the current section of the inner structure of the box-type structure;

[0020] S3: After the disassembly is completed, the mobile working platform with rails and the working equipment are lifted off the top surface of the box-type structure;

[0021] S4: Cut and demolish the box-type structures of the current section;

[0022] S5: Repeat steps S1 to S4 until the dismantling of the building is completed.

[0023] The mobile work platform with rail lifting of the present invention has a bridge frame for installing work equipment movably connected to the track beam, and the track beam itself is arranged on the top surface of the box-shaped structure. However, it is not set up in the conventional way of rails, with the top surface of the box body as the construction surface and directly and completely fixedly installed on the top surface, but a rail lifting device is used to limit the connection with the bridge frame, and the two are used as an integral module, so that they can be hoisted and placed together during hoisting.

[0024] This setting method breaks away from the inherent technical thinking of the original track layout, and creatively uses the track beam and bridge as an integral module to achieve the joint lifting of the two. Therefore, when used on a work plane that needs to be dismantled multiple times and constantly updated, it avoids the tedious operation steps of repeated construction and dismantling of tracks, which not only significantly improves work efficiency, but also saves a lot of manpower and material resources, and reduces the cost of dismantling work.

[0025] The limiting part of the track lifting device limits the track beam in the vertical direction, and does not make other limits such as length direction. Therefore, it can make the bridge frame and the track beam rise and fall synchronously in the vertical direction without interfering with the relative movement of the bridge frame and the track beam in the length direction. The connection between the two only requires vertical limiting. The structure is simple and reasonably arranged, the movement is convenient, and it can be fully automated without manual assistance. Personnel will not be disturbed by environmental factors, avoiding direct exposure of personnel to harsh environments such as radiation and radioactive atmosphere. Therefore, it is very suitable for the dismantling of certain types of radioactive nuclear facilities. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a mobile working platform with rail lifting in Embodiment 1 of the present invention;

[0027] Figure 2 It is a structural schematic diagram of a bridge frame for lifting a mobile working platform with rails in Example 1 of the present invention;

[0028] Figure 3 It is a schematic diagram of the three-dimensional structure of the rail lifting device for lifting a mobile working platform with rails in Embodiment 1 of the present invention;

[0029] Figure 4 It is a schematic plan view of the structure of a rail lifting device for lifting a mobile working platform with rails in Embodiment 1 of the present invention;

[0030] Figure 5 It is a schematic structural diagram of a track beam of a mobile working platform with a track lift in Embodiment 1 of the present invention;

[0031] Figure 6 It is a schematic diagram of the end structure of the track beam of the mobile working platform with track lifting in Example 1 of the present invention;

[0032] Figure 7 yes Figure 6 Schematic diagram of the AA structure;

[0033] Figure 8 It is a schematic diagram of the three-dimensional structure of the fixed base of the mobile working platform with rail lifting in Example 1 of the present invention;

[0034] Fig. 9 It is a schematic plan view of the structure of the fixed base of the mobile working platform with rail lifting in Embodiment 1 of the present invention;

[0035] Fig.10 It is a schematic diagram of the three-dimensional structure of the leveling device of the mobile working platform with rail lifting in Example 1 of the present invention;

[0036] Fig.11 It is a schematic diagram of the planar structure of the leveling device for lifting a mobile working platform with rails in Embodiment 1 of the present invention;

[0037] Fig.12 1 is a schematic diagram of the top surface structure of a lifting device for lifting a mobile working platform with rails in Example 1 of the present invention;

[0038] Fig.13 It is a schematic diagram of the bottom structure of the lifting device for lifting a mobile working platform with rails in Example 1 of the present invention.

[0039] In the figure: 1, bridge frame; 11, main beam; 111, lifting lug; 12, end beam; 2, track beam; 21, running track; 22, mounting plate; 23, I-beam; 231, transverse rib plate;

[0040] 232, avoidance gap; 233, longitudinal rib plate; 24, end stop; 3, rail lifting device;

[0041] 31. Limiting part; 32. Lifting drive device; 33. Mounting seat; 4. Box-type building structure;

[0042] 5. Fixed base; 6. Leveling device; 7. Lifting device; 71. Hook; 72. Hanger; 73. Rotary drive module; 74. Hook fixing part. DETAILED DESCRIPTION

[0043] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of the present invention.

[0044] In the description of the present invention, it should be noted that the terms "upper", "lower" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience and simplification of the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0045] In the description of the present invention, the terms “first”, “second” and “third” are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0046] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connect", "set", "install", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0047] Example 1

[0048] like Figures 1 to 5 As shown, the rail-lifting mobile work platform of this embodiment includes a bridge frame 1, a track beam 2 and a track lifting device 3. The track beam 2 is arranged on the top surface of a box-type structure 4 with a certain wall thickness. The bridge frame 1 is movably connected to the track beam 2 along the length direction of the track beam 2 for installing work equipment. The track lifting device 3 is installed on the bridge frame 1. The track lifting device 3 includes a limiting portion 31. The limiting portion 31 can limit the track beam 2 in the vertical direction, so that the bridge frame 1 and the track beam 2 can be synchronously lifted and lowered in the vertical direction without interfering with the relative movement of the bridge frame 1 and the track beam 2 in the length direction, so as to be lifted and placed as an integral module.

[0049] The track beam 2 of this embodiment is arranged on the top surface of the box-type structure 4. However, it is not directly and completely fixedly installed on the top surface with the top surface of the box as the construction surface like the setting mode of the conventional track, but the track lifting device 3 is connected with the bridge frame 1 in a limited position, and the two are used as an integral module, so that they can be hoisted and placed together during hoisting.

[0050] This setting method breaks away from the inherent technical ideas of the original track layout, and creatively uses the track beam 2 and the bridge 1 as an integral module to achieve the joint lifting of the two. Therefore, when used on a work plane that needs to be dismantled and updated multiple times, it avoids the tedious operation steps of repeated construction and dismantling of tracks, which not only significantly improves work efficiency, but also saves a lot of manpower and material resources, and reduces the cost of dismantling work.

[0051] The limiting part 31 of the track lifting device 3 limits the track beam 2 in the vertical direction, and does not perform other limitations such as length direction. Therefore, it can make the bridge frame 1 and the track beam 2 rise and fall synchronously in the vertical direction without interfering with the relative movement of the bridge frame 1 and the track beam 2 in the length direction. The connection between the two only requires vertical limiting. The structure is simple and reasonably arranged, the movement is convenient, and it can be fully automated without manual assistance. Personnel will not be disturbed by environmental factors. Therefore, it is very suitable for the dismantling of certain types of radioactive nuclear facilities.

[0052] In this embodiment, Figure 5As shown, the track beam 2 includes a running track 21 and a mounting plate 22, the running track 21 is connected to the upper surface of the mounting plate 22, and the bridge 1 is movably connected to the running track 21 on the upper surface of the mounting plate 22, as shown in FIG. Figure 3 As shown, the limiting portion 31 is located on the side of the mounting plate 22, extending vertically downward from the bridge frame 1 to below the mounting plate 22, and the bottom end is horizontally bent to form a hook-shaped end located below the lower surface of the mounting plate 22, so that the mounting plate 22 is lifted by the hook-shaped end to achieve vertical limiting during hoisting. The limiting portion 31 extending from the side of the mounting plate 22 will not block the movement route of the bridge frame 1, and the hook-shaped portion below the mounting plate 22 is in a suspended state under normal conditions, so it will not interfere with the movement. During hoisting, the hook-shaped portion can fit the lower surface of the mounting plate 22, so that the track beam 2 is lifted together through the upward supporting force.

[0053] The bridge 1 is connected to the running track 21 by sliding / rolling cooperation. In this embodiment, a roller adapted to the running track 21 is arranged at the bottom of the bridge 1 to achieve motion cooperation. The running track 21 and the mounting plate 22 are both strip-shaped structures. The limiting portion 31 is located on the side of the mounting plate 22 in the width direction, and has a certain gap with the side of the mounting plate 22, so as to virtually hold the mounting plate 22 from the side.

[0054] In this embodiment, the track beam 2 also includes an I-beam 23, and the upper flange plate of the I-beam 23 serves as the mounting plate 22. The track lifting device 3 is provided with two limiting portions 31, which are symmetrically arranged relative to the web of the I-beam 23, so that the two limiting portions 31 hold the mounting plate 22 in a relatively buckled manner, and the distance between the hook-shaped ends of the two limiting portions 31 is greater than the thickness of the web of the I-beam 23, and less than the width of the mounting plate 22.

[0055] The upper flange plate of the I-beam 23 structure is used as the mounting plate 22. First, the top edge of the middle web supports the mounting plate 22, and the web does not completely cover the entire lower surface of the mounting plate 22, so that the mounting plate 22 will not directly fit the placement surface, and the lower surface has space that allows the hook-shaped end to bend inward and move up and down, thereby achieving vertical limitation. At the same time, the I-beam 23 has a simple structure, is easy to process, and has a low cost.

[0056] Both ends of the track beam 2 are also provided with end stops 24, which include a stop surface and a stop block. The stop surface is perpendicular to the length direction of the track beam 2 and is arranged at both ends of the track beam 2. The stop block is arranged on the top of the stop surface at the height of the bridge frame 1. The stop blocks at both ends of the track beam 2 are opposite to each other, so as to provide limitation and buffering when the bridge frame 1 runs to the end along the track beam 2 to avoid separation from the track beam 2.

[0057] In this embodiment, Figure 3 and Figure 4As shown, the rail lifting device 3 also includes a lifting drive device 32 and a mounting seat 33. The lifting drive device 32 is installed on the bridge frame 1 through the mounting seat 33. The top end of the limiting portion 31 is connected to the vertical driving end of the lifting drive device 32, and is lifted and lowered between the suspension position and the supporting position under the drive of the lifting drive device 32. When the limiting portion 31 is in the suspension position, the hook-shaped end is suspended below the lower surface of the mounting plate 22, and when it is in the supporting position, the hook-shaped end is attached to the lower surface of the mounting plate 22. Through the lifting drive device 32, the limiting portion 31 can limit the track beam 2 before lifting, so as to ensure the balance of the entire system and avoid collision and displacement between the track beam 2 and the bridge frame 1 during lifting, resulting in tilting or even overturning.

[0058] The limiting part 31 of the rail lifting device 3 is a square tube-shaped structure with an opening on one side, which is sleeved on the outside of the mounting plate 22. The opening avoids the web below the mounting plate 22, and the top is connected to the driving end of the lifting drive device 32.

[0059] In this embodiment, Figure 6 and Figure 7 As shown, a vertically arranged transverse rib plate 231 is further provided between the upper flange plate and the lower flange plate of the I-beam 23, for strengthening the strength of the track beam 2, and ensuring that the track beam 2 has sufficient strength, rigidity and stability. The transverse rib plate 231 is perpendicular to the web plate, and an avoidance notch 232 is provided in the transverse rib plate 231 at a first set position in the vertical direction, so as to avoid the hook-shaped end of the limit portion 31 when the bridge frame 1 moves. The first set position is the vertical position where the hook-shaped end is located when the limit portion 31 is in the suspended position.

[0060] In this embodiment, there are multiple transverse ribs 231, each of which is arranged in sequence along the length direction of the track beam 2, and the arrangement position of each transverse rib 231 avoids the second set position, which is the position of the track lifting device 3 when the bridge 1 is located at the center of gravity of the track beam 2. Therefore, when the working platform is operating normally, the hook-shaped end of the limit part 31 is suspended below the mounting plate 22, and can pass through the avoidance gap 232 on the transverse rib 231 when the bridge 1 moves back and forth; and when the working platform is hoisted, the bridge 1 is first moved to the center of the track beam 2, that is, the center of gravity, to ensure that the center of gravity of the entire system is also basically located at the center of the lifting rope, which can ensure the balance of the entire system and is not easy to tilt. At this time, the position of the track lifting device 3 is not interfered by the transverse ribs 231, so the hook-shaped end can be raised and lowered and fit with the mounting plate 22.

[0061] In this embodiment, when the bridge frame 1 is located at the center of gravity of the track beam 2, transverse ribs 231 can be set on both sides of the hook end of the track lifting device 3 so that when lifting, the hook end is exactly located between the two transverse ribs 231.

[0062] In this embodiment, a horizontally arranged longitudinal rib 233 is further provided between the upper flange plate and the lower flange plate of the I-beam 23. The longitudinal rib 233 is arranged along the length direction of the track beam 2 and is also used to strengthen the strength of the track beam 2 to ensure that the track beam 2 has sufficient strength, rigidity and stability.

[0063] In this embodiment, Figure 8 and Fig. 9 As shown, the working platform also includes a fixed base 5, which is in a U-shaped structure with an opening facing downward, and the width of the opening gradually decreases from bottom to top, presenting a trumpet-shaped structure with a lower opening. The width of the narrowest part of the opening is greater than the thickness of the side wall of the box-type structure 4, and the width of the widest part of the opening is greater than the wall thickness of the box-type structure 4 by 20-50 mm (i.e., 20-50 mm wider than the wall thickness), ensuring that the lower surface of the fixed base 5 can contact the upper surface of the box-type structure 4. The top of the fixed base 5 is installed below the track beam 2, and the bottom is embedded in the top surface of the side wall of the box-type structure 4 through the opening. When embedded and connected, the slope formed by the opening can play an automatic guiding role, so that the fixed base 5 automatically presses the side wall of the box-type structure 4.

[0064] In this embodiment, an electromagnetic adsorption device is provided in the fixed base 5, which is used to adsorb the side walls and top surface of the box-type structure 4 when powered on, ensuring that the fixed base 5 is in close contact with the upper surface of the box-type structure 4 and is not prone to slippage, thereby ensuring the stability of the entire mobile work platform.

[0065] In the present embodiment, a plurality of fixed bases 5 are provided, which are symmetrically distributed below the track beam 2. Specifically, a fixed base 5 is provided at each end of the two track beams 2, and a total of four fixed bases 5 are distributed at four corners, that is, two on each side. The four-corner distribution structure ensures that it can provide stable support and flexibly adjust the height of the track beam 2 without increasing the difficulty of adjustment due to too many fixed bases. In other embodiments, it can also be appropriately adjusted according to the situation.

[0066] The working platform also includes a leveling device 6, such as Fig.10 and Fig.11As shown, the leveling device 6 is a six-degree-of-freedom adjustment mechanism, and the leveling device 6 is installed between the fixed base 5 and the track beam 2. In this embodiment, the essence of the leveling device 6 is a six-degree-of-freedom Stewart mechanism. It has upper and lower mounting surfaces and an adjustment telescope in the middle. The upper and lower mounting surfaces can be moved relative to each other in the X, Y, and Z directions and rotated around the X-axis, Y-axis, and Z-axis. The adjustment telescope can be a cylinder or an electric push rod. The lower surface of the leveling device 6 is fixed to the fixed base 5, and the upper surface is fixed to the bottom of the track beam 2. At this time, the two track beams 2 and the upper bridge 1 can be supported on the top of the box-type structure 4 through four points. And by adjusting the direction of each degree of freedom through the leveling device 6, the position and height changes of the four support points of the track beam 2 can be achieved. It is ensured that no matter how flat the upper surface of the box-type structure 4 is, the two track beams 2 can have a certain track gauge, parallelism, horizontality, and a small relative height difference.

[0067] In this embodiment, two track beams 2 are provided, the two track beams 2 are parallel to each other, and are respectively arranged on the top surfaces of two opposite side walls of the box-type structure 4. The bridge frame 1 spans the box-type structure 4, and both ends are movably connected to the two track beams 2, and each end is provided with at least one track lifting device 3. The middle part is used to install working equipment, so as to dismantle the buildings in the box-type structure 4.

[0068] In this embodiment, the bridge frame 1 includes a main beam 11 and an end beam 12. The main beam 11 is perpendicular to the track beam 2. An end beam 12 is connected to each end of the main beam 11. The end beam 12 is parallel to the track beam 2. The two end beams 12 are movably connected to the two track beams 2 respectively. Specifically, running wheels can be set at the bottom and driven by running drive parts such as motors, and a rail lifting device 3 is provided at both ends of each end beam 12. There are two main beams 11, which are arranged in parallel and spaced apart. The two main beams 11 and the two end beams 12 are connected to form a frame structure.

[0069] In this embodiment, Fig.12 and Fig.13As shown, the working platform also includes a lifting device 7, which is an electric rotating lifting device for lifting the main beam 11. The lifting device 7 has multiple hooks 71, and the hooks of each hook 71 are all oriented in the same direction, so that the cooperation with the lifting lug 111 can be achieved by lifting and moving to one side through automatic equipment without manual assistance. The main beam 11 is provided with multiple lifting lugs 111, and the distribution positions of each lifting lug 111 on the main beam 11 correspond to the distribution positions of each hook 71 on the lifting device 7. The sling 7 also includes a hanger 72, a slewing drive module 73 and a hook fixing part 74. The hanger 72 is a plate-like structure with the hook fixing parts 74 connected at the four corners, and each hook 71 is connected to each hook fixing part 74 respectively; the slewing drive module 73 is installed at the top center of the hanger 72, and the slewing drive method is the current conventional method. For example, a motor, gears and gear rings are used to achieve relative rotation between the hanger 72 and the large lifting ear used to connect the crane. The motor can be used to drive the entire hanger 72 to rotate to drive the working platform to rotate.

[0070] In general, the mobile work platform with rail lifting in this embodiment comprises an electric rotary hanger, a bridge 1, a track beam 2, a rail lifting device 3, a leveling device 6, and a fixed base 5, which are arranged in a box-type building 4. It can be used in a special environment where workers cannot approach for auxiliary operations, to realize remote control and rapid installation and disassembly of the bridge 1 and the running track beam 3 as a whole, to form a mobile work platform, to provide a work platform for the installation of tools and equipment such as lifting, dismantling, and handling, and has adaptive installation and precision adjustment functions, and belongs to the field of lifting and hoisting technology.

[0071] The electric rotary spreader includes a quick hook 71, a hanger 72, a rotary drive module 73, and a hook fixing part 74. The electric rotary spreader can realize relative rotation between the lifting point and the hanging object, so during the installation process, the installation position and installation angle of the hanging object can be adjusted by the movement of the upper crane hook and the rotation of the spreader.

[0072] The bridge frame 1 is composed of two main beams 11 and two end beams 12, running wheels and running drive components. The end beams 12 are used to connect the two main beams 11 and install running wheels and running drive components. The main beams 11 have a certain length and span, and it is convenient to install tools and equipment that can be used for lifting, handling or demolition. Tracks can also be added to the main beams 11 so that the tools and equipment installed on them have the ability to move in a straight line. At the end of the end beams 12 of the bridge frame 1, there are rail lifting devices 3, and the total number of such devices is four.

[0073] The track beam 2 includes an I-beam 23 (I-shaped steel can be used), transverse rib plates 231, longitudinal rib plates 233, end stops 24, and a running track 21. The running track 21 is installed on the top of the upper flange plate of the I-beam and can cooperate with the wheel with a flange of the bridge 1 to complete the straight-line walking function of the bridge 1. The transverse rib plates 231 and the longitudinal rib plates 233 are welded between the web and the upper and lower flange plates of the I-beam to ensure that the track beam 2 has sufficient strength, stiffness, and stability. The outer edge of the transverse rib plate 231 has an avoidance notch 232, and the notches are arranged in a straight line at the same height of all the transverse rib plates 231 to ensure that the hook-shaped end of the rail lifting device 3 on the bridge 1 can pass through the notch without interference. The end stops 24 are installed at both ends of the track beam 2 to provide collision buffering and limit position protection to ensure that the bridge 1 does not derail from the track beam 2 when walking on the track.

[0074] The rail lifting device 3 includes a limiting part 31, a lifting driving device 32, and a mounting seat 33. The limiting part 31 of each rail lifting device 3 includes two hook-shaped ends, which are symmetrically arranged on both sides of the track beam 2. Under normal operating conditions, the hook-shaped ends are exactly located in the notches of the transverse rib plates 231 of the track beam 2 to ensure that the bridge 1 can run smoothly on the track beam 2. When rail lifting is required, first move the bridge 1 to the middle position of the track beam 2. At this time, the hook-shaped ends are exactly located between two transverse rib plates 231. The lifting driving device 32 is started to lift the hook-shaped ends until the upper surface of the hook-shaped ends is close to or in contact with the lower surface of the upper flange plate of the I-beam of the track beam 2. At this time, if an electric rotating sling is used to lift the bridge 1, the track beam 2 will also be lifted together, and since the bridge 1 is exactly located at the center of the track beam 2 at this time, the center of gravity of the entire system is also basically located at the center of the lifting rope, which can ensure the balance of the entire system and is not prone to tilting.

[0075] The fixed base 5 includes a guiding structure, a supporting connection part, and an internal electromagnetic adsorption device. The supporting connection part is generally U-shaped, and its bottom opening serves as the guiding structure. The guiding structure is located at the bottom of the fixed base 5 and is a downward-opening horn-shaped structure, which can make it easier for the fixed base 5 to be placed on the upper surface of the box-shaped building structure 4 through slope guiding. The narrowest part of the guiding structure is slightly larger than the width of the box body to ensure that the lower surface of the fixed base 5 can be in contact with the upper surface of the box-shaped building structure 4. The supporting connection part is used to connect the upper leveling device 6 and the track beam 2. The internal electromagnetic adsorption device can ensure that the fixed base 5 is in close contact with the upper surface of the box-shaped building structure 4 and is not prone to slipping when energized. Ensure the stability of the entire mobile working platform

[0076] The leveling device 6 is essentially a six-degree-of-freedom Stewart mechanism, which can ensure that the two track beams 2 have a certain gauge, parallelism, levelness, and a small relative height difference regardless of the flatness of the upper surface of the box-shaped building structure 4.

[0077] The box-type structure 4 is a square ring structure, and the inner surface of the box body is welded by carbon steel plates.

[0078] The bridge 1 has the function of running in a straight line on the track beam 2; the track beam 2 has sufficient strength, rigidity and stability, so that it can not only support the bridge 1 to run on it and carry a certain load, but also when the bridge 1 runs to the center of the track beam 2, the bridge 1 and the track beam 2 can be hoisted together by the hoist 7 and transported to another place. The upper surface of the box-type structure 4 can be used to connect the fixed base 5 of the track beam 2. When the box-type structure 4 is continuously cut and disassembled from the top to the bottom and the height is gradually reduced, the bridge 1 and the track beam 2 can be hoisted as a whole by the electric rotating hoist and placed at a suitable position on the upper surface of the box-type structure 4. Since the working upper surface of the box-type structure 4 has a certain degree of unevenness, the four-point position and height of the track beam 2 can be readjusted by the leveling device 6, so that the parallelism, horizontality and track center distance of the two track beams 2 meet the operation requirements of the bridge. It solves the problem of unmanned rail lifting of the entire mobile work platform as the installation structure (box-type building) is constantly dismantled and the installation height is continuously lowered. The track can be re-placed and the accuracy of the track can be adjusted at the new installation height, so that the track can meet the operating accuracy requirements of the upper bridge and working device.

[0079] This embodiment has the following advantages:

[0080] ① A bridge 1 with a certain load capacity and transport capacity, which can be used to install tools or equipment such as lifting, handling, and demolition;

[0081] ② With a track beam 2 that is easy to install, the bridge frame can connect and hoist the track beam together through a rail lifting device, so that the running track can be installed or removed without assistance, ensuring that the bridge frame and the track beam can be lifted and lowered as a whole, so there is no need to install and remove the track separately on the upper surface of the box, saving installation time and improving work efficiency;

[0082] ③ The base of the running track adopts a four-point support structure, which does not require high flatness of the installation foundation and has strong adaptability to the installation environment; and after installation or reinstallation, the running track has a certain accuracy and position adjustment function, and a six-degree-of-freedom leveling device is set. It can ensure that no matter how flat the upper surface of the box-type structure is, the track beam can meet the track gauge, parallelism, horizontality and relative height difference of the bridge frame moving working conditions;

[0083] ④ The bridge structure is convenient for hoisting. Electric rotating hoists can be used for quick hook installation, and through the rotating movement, the entire mobile working platform can be accurately placed on the upper surface of the box-type structure;

[0084] ⑤ The single track beam is a two-point supported single beam structure, which has sufficient strength, rigidity and stability. It ensures that when the track beam is fixed on the upper surface of the box-type structure, the bridge can stay and carry loads at any position of the track beam;

[0085] ⑥ Through the guide part of the fixed base and the electromagnetic adsorption device, even if the flatness of the upper surface of the box-type structure is poor, it will not affect the installation of the entire mobile work platform on the upper surface of the box-type structure, and it is not easy to slip and detach during the working process.

[0086] Example 2

[0087] In the building dismantling method of this embodiment, a box-type building 4 is provided outside the building to be dismantled. The method adopts the mobile working platform with rail lifting in Embodiment 1. The method comprises the following steps:

[0088] S1: Installing a rail-lifting mobile working platform and working equipment on the top surface of the current section of the box-type structure 4;

[0089] S2: Use working equipment to dismantle the current section of the inner structure of the box-type structure 4;

[0090] S3: After the disassembly is completed, the mobile working platform with rails and the working equipment are lifted off the top surface of the box-type structure 4;

[0091] S4: cutting and demolishing the box-type structure 4 of the current section;

[0092] S5: Repeat steps S1 to S4 until the dismantling of the building is completed.

[0093] Combined with the specific structure in Example 1, this method is further specified as follows:

[0094] Taking a certain type of nuclear facility as an example, the dismantling process of the facility is generally carried out layer by layer from top to bottom. First, the top of the box-type structure is processed, and a wall-climbing robot carrying a laser or plasma cutting head is generally used to cut the box-type structure horizontally and vertically. This makes the top of the box relatively flat and meets the conditions for installing a mobile work platform.

[0095] The mobile work platform is preassembled on the ground in a conventional environment. First, the two track beams 2 are fixed with tooling and the relative position and accuracy are adjusted. Then the leveling device 6 and the fixed base 5 are installed at the bottom of the track beam 2, and the bridge 1 and the rail lifting device 3 as well as the corresponding drive device and power supply control cable are installed on the top running track 21 of the track beam 2. After the installation is completed, use an electric rotating hoist to lift the bridge 1 together with the track beam 2 as a whole about 150mm off the ground and let it stand to observe the balance state of the entire system. If necessary, install counterweights in local areas, so that the track beam 2 and the bridge 1 are basically in a horizontal state during the overall lifting without causing a large tilt.

[0096] The mobile work platform is hoisted as a whole by using an electric rotating hoist, and moved to the top of the facility, and then slowly lowered. Through the action of the electric rotating hoist, the four fixed bases 5 and the box-type structure 4 are matched with each other and initially lowered. The above operations are all remotely operated, and a video surveillance system can be used for monitoring and assistance.

[0097] If the placement position is found to be unsuitable, lift the mobile work platform and repeat the above process until the installation position meets the use requirements of the mobile work platform.

[0098] The electromagnetic adsorption device of the fixed base 5 is powered on, so that the fixed base 5 is firmly connected to the box-type building 4. At this time, the relative position and accuracy of the two track beams 2 generally do not meet the operation and load requirements of the bridge.

[0099] Next, the track beam 2 is leveled. The leveling devices 6 above the four fixed bases 5 are controlled to adjust in three directions, X, Y, and Z, and the leveling device 6 at the lowest point is used as the adjustment reference.

[0100] After the track beam 2 is adjusted, the hook-shaped end of the track lifting device 3 is lowered to the working position (suspended position). At this time, the bridge frame 1 can move on the track beam 2 and provide a working platform for equipment such as a manipulator.

[0101] When the work of the mobile work platform is completed, the bridge frame 1 is first driven to the center of the track beam 2, and then the rail lifting device 3 lifts the hook end to the upper flange plate of the I-beam close to the track beam 2. At this time, after the electromagnetic suction device is powered off, the electric rotating hoist can be used to lift the bridge frame 1 and the track beam 2 as a whole and drop them to a suitable area near the facility.

[0102] Then, the facility disposal and the cutting and dismantling of the box-type building are carried out. After the box-type building has a new working surface, the above process is repeated to realize the reuse of the mobile working platform.

[0103] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A mobile working platform with rail lifting, characterized in that: It comprises a bridge frame (1), a track beam (2) and a track lifting device (3). The track beam (2) is arranged on the top surface of the box-shaped structure (4). The bridge frame (1) is movably connected to the track beam (2) along the length direction of the track beam (2) and is used for installing working equipment. The rail lifting device (3) is installed on the bridge frame (1), and the rail lifting device (3) comprises a limiting portion (31). The limiting portion (31) limits the track beam (2) in the vertical direction, thereby enabling the bridge frame (1) and the track beam (2) to be synchronously raised and lowered in the vertical direction without interfering with the relative movement of the bridge frame (1) and the track beam (2) in the length direction, so as to be hoisted and placed as an integral module.

2. The rail-lifting mobile working platform according to claim 1, characterized in that: The track beam (2) comprises a running track (21) and a mounting plate (22). The running track (21) is connected to the upper surface of the mounting plate (22). The bridge frame (1) is movably connected to a running track (21) on the upper surface of a mounting plate (22). The limiting portion (31) is located on the side of the mounting plate (22), extending vertically downward from the bridge frame (1) to below the mounting plate (22), and the bottom end is horizontally bent to form a hook-shaped end located below the lower surface of the mounting plate (22), so that the mounting plate (22) is lifted by the hook-shaped end during lifting to achieve vertical limiting.

3. The rail-lifting mobile working platform according to claim 2 is characterized in that: The track beam (2) further comprises an I-beam (23), an upper flange plate of the I-beam (23) serving as the mounting plate (22), The rail lifting device (3) is provided with two limiting parts (31), which are symmetrically arranged relative to the web of the I-beam (23). The two limiting portions (31) are arranged to hold the mounting plate (22) in a relatively buckled manner, and the distance between the hook-shaped ends of the two limiting portions (31) is greater than the thickness of the web of the I-beam (23) and less than the width of the mounting plate (22).

4. The rail-lifting mobile working platform according to claim 3 is characterized in that: The rail lifting device (3) further comprises a lifting drive device (32) and a mounting seat (33). The lifting drive device (32) is mounted on the bridge frame (1) via a mounting seat (33). The top end of the limiting part (31) is connected to the vertical driving end of the lifting driving device (32), and is driven by the lifting driving device (32) to rise and fall between the suspension position and the supporting position. When the limiting portion (31) is in the suspended position, the hook-shaped end is suspended below the lower surface of the mounting plate (22); when it is in the supporting position, the hook-shaped end is in contact with the lower surface of the mounting plate (22).

5. The rail-lifting mobile working platform according to claim 4 is characterized in that: A vertically arranged transverse rib plate (231) is further provided between the upper flange plate and the lower flange plate of the I-beam (23), wherein the transverse rib plate (231) is perpendicular to the web plate. The transverse rib plate (231) is provided with an avoidance notch (232) at a first set position in the vertical direction, so as to avoid the hook-shaped end of the limit portion (31) when the bridge frame (1) moves. The first set position is the vertical position of the hook-shaped end when the limiting portion (31) is in the suspended position.

6. The rail-lifting mobile working platform according to claim 5, characterized in that: A plurality of transverse ribs (231) are provided, each transverse rib (231) is arranged in sequence along the length direction of the track beam (2), and the arrangement position of each transverse rib (231) avoids the second set position. The second set position is the position of the track lifting device (3) when the bridge frame (1) is located at the center of gravity of the track beam (2).

7. The rail-lifting mobile working platform according to claim 1, characterized in that: It also includes a fixed base (5), the fixed base (5) is in a U-shaped structure with an opening facing downward, and the width of the opening gradually decreases from bottom to top, and the width of the narrowest part of the opening is greater than the thickness of the side wall of the box-shaped building (4). The top of the fixed base (5) is installed below the track beam (2), and the bottom is embedded in the top surface of the side wall of the box-type building (4) through an opening.

8. The rail-lifting mobile working platform according to claim 7, characterized in that: An electromagnetic adsorption device is arranged inside the fixed base (5) and is used for adsorbing the side walls and top surface of the box-shaped building (4) when powered on.

9. The rail-lifting mobile working platform according to claim 7, characterized in that: The fixed bases (5) are provided in plurality and are symmetrically distributed below the track beam (2). It also comprises a leveling device (6), which is a six-degree-of-freedom adjustment mechanism. The leveling device (6) is installed between the fixed base (5) and the track beam (2).

10. The rail-lifting mobile working platform according to claim 1, characterized in that: The track beams (2) are provided with two, the two track beams (2) are parallel to each other and are respectively arranged on the top surfaces of two opposite side walls of the box-shaped building (4). The bridge frame (1) spans across the box-type building (4), and its two ends are movably connected to two track beams (2), and each end is provided with at least one track lifting device (3), and the middle part is used for installing working equipment.

11. The rail-lifting mobile working platform according to claim 10, characterized in that: The bridge frame (1) comprises a main beam (11) and an end beam (12), wherein the main beam (11) is perpendicular to the track beam (2), and each end of the main beam (11) is connected to an end beam (12). The end beam (12) is parallel to the track beam (2), the two end beams (12) are movably connected to the two track beams (2) respectively, and a track lifting device (3) is provided at both ends of each end beam (12).

12. The rail-lifting mobile working platform according to claim 11, characterized in that: It also includes a lifting device (7) for lifting the main beam (11), wherein the lifting device (7) has a plurality of hooks (71), and the hook portions of the hooks (71) are all oriented in the same direction. The main beam (11) is provided with a plurality of lifting ears (111), and the distribution positions of the lifting ears (111) on the main beam (11) correspond to the distribution positions of the lifting hooks (71) on the lifting device (7).

13. A method for dismantling a building structure, characterized in that: The structure to be dismantled is provided with a box-type structure (4) outside, the method adopts the track-lifting mobile working platform described in any one of claims 1 to 12, and the method comprises the following steps: S1: installing the rail-lifting mobile working platform and working equipment on the top surface of the current section of the box-type building (4); S2: using working equipment to dismantle the current section of the structure inside the box-type structure (4); S3: After the disassembly is completed, the mobile working platform with rails and the working equipment are lifted off the top surface of the box-type structure (4); S4: cutting and dismantling the box-type structures of the current segment (4); S5: Repeat steps S1 to S4 until the dismantling of the building is completed.

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