Material distributing machine self-lifting device and lifting method

Abstract

The invention provides a distributing machine self-lifting device and a lifting method. The self-lifting device is applied to an elevator shaft with a reserved hole. The distributing machine self-lifting device comprises a lifting frame, a base supporting mechanism installed at the bottom of the lifting frame, a guide rail mechanism installed on the lifting frame, a lifting mechanism assembled on the guide rail mechanism in an up-down sliding mode and a lifting source connected between the base supporting mechanism and the lifting mechanism. A first telescopic part of which the end part is matched with the reserved hole is arranged on the outer side of the base supporting mechanism; the lifting mechanism is used for installing the material distributing machine, a second telescopic part with the end matched with the reserved hole is arranged on the outer side of the lifting mechanism, the lifting mechanism is further provided with a locking assembly used for being locked or unlocked with the guide rail mechanism, and the lifting source is used for providing pulling force facing the lifting mechanism for the base supporting mechanism. According to the scheme, the whole device can be lifted only by lifting and fixing the lifting mechanism and then lifting the base supporting mechanism for fixing, the steps are simple and rapid, and the efficiency is high.

Description

Technical Field

[0001] This invention belongs to the field of building construction technology, and in particular relates to a self-lifting device and lifting method for a concrete placing boom. Background Technology

[0002] In the construction industry, a concrete placing boom is an engineering device used to evenly spread concrete. When constructing high-rise buildings, concrete slabs need to be poured layer by layer. Therefore, after pouring one slab, the placing boom needs to be raised to the next higher floor to allow for the pouring of the next floor.

[0003] In related technologies, two traditional methods are typically used to lift the concrete placing boom during the construction of super high-rise buildings: 1. Tower crane assisted lifting method: The concrete placing boom is lifted as a whole by a tower crane, moved to the target floor, and then a temporary support is manually erected to fix the concrete placing boom, thus completing the lifting operation. 2. Fixed support type lifting method: A fixed multi-layer support is pre-built in the elevator shaft. The concrete placing boom moves layer by layer on the support as the construction progresses. During the movement, the connection structure between the concrete placing boom and the support needs to be manually disassembled and reinstalled. However, traditional methods of fabric lifting have the following drawbacks: 1. Poor adaptability: It cannot flexibly adapt to elevator shafts of different specifications. When using tower cranes for assisted lifting, the size of the temporary support needs to be customized according to the shaft width. When changing the construction project or shaft specifications, the support needs to be re-processed. The support width of the fixed support type lifting is fixed, which can only adapt to a single specification shaft, resulting in extremely low versatility and increasing equipment costs and construction preparation time. 2. Low climbing efficiency: Tower crane-assisted lifting requires coordination of tower crane operation time and is greatly affected by tower crane scheduling. A single lifting operation, from disassembly and hoisting to re-fixing, takes an average of 4-6 hours. Fixed support lifting requires manual disassembly and installation of the connecting parts between the concrete placing boom and the support layer by layer. A single climbing operation takes 3-5 hours, which cannot meet the needs of rapid progress in super high-rise construction. 3. Insufficient safety: During the tower crane assisted lifting process, the concrete placing boom is in a suspended state and is prone to collision with the shaft wall due to wind force and tower crane operation accuracy. Fixed support lifting lacks a special anti-tilting structure. When the concrete placing boom is in operation or moving, it is prone to tilting due to factors such as the reaction force of concrete placement and uneven floor load, and there is even a risk of falling. 4. High dependence on manual labor: Both existing technologies require a large amount of manual labor, such as the temporary support construction and concrete placing boom fixing during tower crane assisted lifting; and the component disassembly and installation during fixed support lifting. This not only increases labor costs but also increases the safety risks of high-altitude operations, which is not in line with the development trend of automation and intelligence in construction. Summary of the Invention

[0004] The technical objective of this invention is to provide a self-lifting device and lifting method for a fabric placing machine, which solves at least one of the problems existing in the traditional lifting methods of fabric placing machines in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides a self-lifting device for a fabric placing machine, applied in an elevator shaft. The elevator shaft has pre-drilled holes at predetermined heights. The self-lifting device includes a lifting frame, a base support mechanism mounted on the bottom of the lifting frame, a guide rail mechanism mounted on the lifting frame, a lifting mechanism slidably mounted on the guide rail mechanism, and a lifting source connecting the base support mechanism and the lifting mechanism. The base support mechanism has a first telescopic portion on its outer side, the end of which matches the pre-drilled holes. The lifting mechanism is used to mount the fabric placing machine, and has a second telescopic portion on its outer side, the end of which matches the pre-drilled holes. The lifting mechanism also has a locking component for locking or unlocking with the guide rail mechanism. The lifting source provides a pulling force to the base support mechanism towards the lifting mechanism.

[0006] Furthermore, the lifting frame includes multiple standard frame sections, which are rectangular truss sections welded from steel, with flanges at both the upper and lower ends.

[0007] Furthermore, the base support mechanism includes a base ring beam fixedly connected to the flange at the bottom of the lifting frame. The base ring beam is a rectangular steel frame structure with protruding first mounting feet on opposite sides. One end of the first telescopic part is inserted into the mounting groove of the first mounting foot. A screw nut mechanism connected to the first telescopic part is provided in the first mounting foot. Pin holes are provided on the first mounting foot and at preset positions of the first telescopic part.

[0008] Furthermore, the base support mechanism also includes a lifting lower suspension point fixed to the base ring beam, and the bottom end of the lifting source is suspended from the lifting lower suspension point.

[0009] Furthermore, the guide rail mechanism includes guide rails vertically arranged at the four corners of the lifting frame, connectors for fixing the guide rails to the lifting frame, and a fixing frame for fixing each guide rail as a whole; the connectors are horizontally inserted through the lifting frame and fixed to the lifting frame, and both ends of the connectors are respectively fixed to the two guide rails, with a clearance reserved between the fixing point and the edge of the corresponding guide rail; the fixing frame is annular, with a retaining groove at each of the four inner corners, and the four guide rails are respectively embedded in the four retaining grooves and fixedly connected to the fixing frame.

[0010] Furthermore, the lifting mechanism includes a lifting ring beam sleeved outside the guide rail mechanism. The lifting ring beam has four sliding grooves at its inner corners, and the four guide rails of the guide rail mechanism are slidably connected to the four sliding grooves. The outer surface of the guide rails has spaced support nodes arranged vertically. The locking assembly includes a support device and a manual wrench connected to the support device via a spring reset mechanism. One end of the support device is rotatably connected to the lifting ring beam, and the other end is a wedge-shaped block capable of abutting against the bottom side of the support node. The spring reset mechanism and the manual wrench provide a driving force to rotate the support device towards or away from the support node.

[0011] Furthermore, the lifting mechanism also includes a lifting upper hoisting point disposed on the lifting ring beam, the lifting upper hoisting point having a hoisting position on both the bottom and top sides, and the top end of the lifting source being connected to the hoisting position on the bottom side of the lifting upper hoisting point; the lifting ring beam has protruding second mounting feet on opposite sides, one end of the second telescopic part being inserted into the mounting groove of the second mounting foot, the second mounting foot being provided with a screw nut mechanism connected to the second telescopic part, and pin holes being provided on the second mounting foot and at preset positions of the second telescopic part.

[0012] Furthermore, it also includes an anti-tilt mechanism, which includes an anti-tilt bracket with one end fixed to the lifting frame and the other end extending outward, and an anti-tilt guide wheel rotatably connected to the outer end of the anti-tilt bracket.

[0013] Furthermore, it also includes an operating platform disposed on the base support mechanism and the lifting mechanism, the operating platform including an internal steel mesh and a rectangular tube frame surrounding the outer periphery of the steel mesh.

[0014] A method for lifting a fabric placing machine is provided, which employs the self-lifting device for the fabric placing machine as described in any of the above claims, and includes the following steps: Initial preparation: Complete the installation of the self-lifting device and the concrete placing machine. The first telescopic part of the base support mechanism is inserted into the reserved hole corresponding to the F+1 floor of the building, and the second telescopic part of the lifting mechanism is inserted into the reserved hole corresponding to the F+2 floor of the building. The F+3 floor of the building is used as the concrete pouring layer. Lifting mechanism lifting: After the F+3 floor of the building is poured, the second telescopic part is controlled to retract to disengage from the reserved hole corresponding to the F+2 floor of the building. The lifting mechanism is then lifted upwards along the guide rail mechanism to the F+3 floor. The second telescopic part is then controlled to extend out of the reserved hole corresponding to the F+3 floor of the building and fixed. Lifting of the base support mechanism: Control the first telescopic part to retract to disengage from the reserved hole corresponding to the F+1 floor of the building, start the lifting source to drive the base support mechanism and the lifting frame to rise together until the base support mechanism reaches the F+2 floor of the building, control the first telescopic part to extend out and fix it to the reserved hole corresponding to the F+2 floor of the building, and the F+4 floor of the building is used as the concrete pouring layer.

[0015] Compared with the prior art, the self-lifting device and lifting method for the fabric placing machine in this invention have the following advantages: Using the aforementioned self-lifting device for the concrete placing boom, the base support mechanism and the lifting mechanism can be fixed in the pre-drilled holes in the elevator shaft via the first and second telescopic parts, respectively. The lifting mechanism and guide rail mechanism are then locked together using a locking assembly. This securely fixes the self-lifting device to the elevator shaft, and the concrete placing boom can be mounted on the lifting mechanism. When lifting is required, simply retract the second telescopic part out of the corresponding pre-drilled hole, lift the lifting mechanism to a higher floor, extend the second telescopic part, insert it into the corresponding pre-drilled hole, and secure it. Then, retract the first telescopic part out of the corresponding pre-drilled hole, lift the base support mechanism to a higher floor using the lifting source, and then extend the first telescopic part into the pre-drilled hole of the corresponding floor and secure it. Finally, lock the lifting mechanism and guide rail mechanism together using the locking assembly. This achieves the overall lifting of the concrete placing boom and the self-lifting device. This solution only requires step-by-step lifting of the lifting mechanism and base support mechanism, which is simple, quick, and efficient, and can improve the construction progress of super high-rise buildings. The first and second telescopic parts can be adapted to elevator shafts of different specifications, making it highly versatile. The locking components ensure stability between the lifting frame and the lifting mechanism, resulting in high safety. Due to its compact structure, there is no need to set up too many additional fixed supports during the lifting process, reducing manual intervention, lowering labor costs and risks associated with high-altitude operations, and promoting the automation and standardization of concrete placing boom lifting operations. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the self-lifting device of the fabric laying machine in an embodiment of the present invention; Figure 2 This is a schematic diagram of the layout of the self-lifting device of the fabric placing machine installed in the elevator shaft in an embodiment of the present invention; Figure 3 This is a schematic diagram of the base ring beam of the self-lifting device for the fabric placing machine in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the fixing frame of the self-lifting device of the fabric laying machine in an embodiment of the present invention; Figure 5 This is a schematic diagram of the lifting ring beam of the self-lifting device of the fabric placing machine in an embodiment of the present invention; Figure 6 This is a schematic diagram of the operating platform of the self-lifting device for the fabric laying machine in an embodiment of the present invention. Detailed Implementation

[0017] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0018] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "circumferential," and "radial," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] In this embodiment, combined with Figure 1-2 A self-lifting device for a fabric placing machine is applied to an elevator shaft 10. The elevator shaft 10 has pre-drilled holes 101 at predetermined heights. The self-lifting device for the fabric placing machine includes a lifting frame 1, a base support mechanism 4 installed at the bottom of the lifting frame 1, a guide rail mechanism 3 installed on the lifting frame 1, a lifting mechanism 2 slidably mounted on the guide rail mechanism 3, and a lifting source 6 connecting the base support mechanism 4 and the lifting mechanism 2. The outer side of the base support mechanism 4 has a first telescopic part 44 whose end matches the pre-drilled hole 101. The lifting mechanism 2 is used to install the fabric placing machine (not shown). The outer side of the lifting mechanism 2 has a second telescopic part 25 whose end matches the pre-drilled hole 101. The lifting mechanism 2 also has a locking component 21 for locking or unlocking with the guide rail mechanism 3. The lifting source 6 is used to provide a pulling force to the base support mechanism 4 toward the lifting mechanism 2.

[0021] Using the aforementioned self-lifting device for the concrete placing machine, the base support mechanism 4 and the lifting mechanism 2 can be fixed in the reserved holes 101 of the elevator shaft 10 via the first telescopic part 44 and the second telescopic part 25, respectively. The lifting mechanism 2 and the guide rail mechanism 3 are then locked by the locking assembly 21, thus stably fixing the self-lifting device to the elevator shaft 10. The concrete placing machine can be installed on the lifting mechanism 2. When lifting is required, simply retract the second telescopic part 25 to disengage from the corresponding reserved hole 101, lift the lifting mechanism 2 to a higher floor, extend the second telescopic part 25, insert it into the corresponding reserved hole 101, and fix it. Then, retract the first telescopic part 44 to disengage from the corresponding reserved hole 101, lift the base support mechanism 4 to a higher floor via the lifting source 66, and then extend the first telescopic part 44 to insert it into the reserved hole 101 of the corresponding floor and fix it. The lifting mechanism 2 and the guide rail mechanism 3 are locked by the locking assembly 21, thus achieving the overall lifting of the concrete placing machine and the self-lifting device. This solution only requires lifting the lifting mechanism 2 and the base support mechanism 4 in stages, which is simple, quick, and efficient, and can improve the construction progress of super high-rise buildings. With the setting of the first telescopic part 44 and the second telescopic part 25, it can be adapted to elevator shafts 10 of different specifications, with high versatility. The locking component 21 ensures the stability between the lifting frame 1 and the lifting mechanism 2, with high safety. Due to the compact structure, there is no need to set up too many additional fixed supports during the lifting process, and the manual intervention is reduced, which can reduce labor costs and high-altitude operation risks, and promote the development of concrete placing boom lifting operations towards automation and standardization.

[0022] Furthermore, combined Figure 1 The lifting frame 1 comprises multiple standard frame sections, each a rectangular truss welded from steel, with flanges at both ends. Specifically, each standard frame section is a rectangular truss structure, welded from Q345B steel, with a section length of 2.8m (suitable for standard floor heights), and flanges (with bolt holes) at both ends. The lower end of the lifting frame 1 is bolted to the base support mechanism 4 via flanges, thus forming the vertical support frame of the device. Pre-drilled guide rail mounting holes are provided on the truss members on both sides, providing an installation foundation for the guide rail mechanism 3 and ensuring the verticality of the guide rail 32. The load of the lifting mechanism 2 is transferred to the base support mechanism 4 through the lifting frame 1. The standard section configuration allows for rapid assembly via flanges, resulting in greater efficiency.

[0023] Furthermore, the base support mechanism 4 includes a base ring beam 41 fixedly connected to the flange at the bottom of the lifting frame 1. The base ring beam 41 is a rectangular steel frame structure, with protruding first mounting feet on opposite sides. One end of the first telescopic part 44 is inserted into the mounting groove of the first mounting foot. A screw and nut mechanism connected to the first telescopic part 44 is provided in the first mounting foot. Pin holes 43 are provided on the first mounting foot and at preset positions on the first telescopic part 44. Specifically, in conjunction with... Figure 3The base support mechanism 4 includes: welded component 411 (made of Q355B 150*100*8 rectangular tube), welded component 412 (made of Q355B 70*70*6 rectangular tube), welded component 413 (made of Q355B 70*70*6 rectangular tube), welded component 414 (made of Q355B t10 steel plate), welded component 415 (made of Q355B t10 steel plate), and welded component 416 (made of Q355B t10 steel plate). The first telescopic part 44 is a telescopic bracket, and the first telescopic part 44 and the first mounting foot can be locked together using 32mm steel bar pins. The bottom of the frame of the base ring beam 41 is equipped with leveling bolts, and the top is connected to the lifting frame 1 by high-strength bolts. The base support mechanism 4 serves as the bottom support structure of the device, bearing the weight of the entire device and the placing boom; the levelness can be adjusted by the leveling bolts to ensure the installation accuracy of the device.

[0024] Furthermore, the base support mechanism 4 also includes a lower lifting point 42 fixed to the base ring beam 41, and the bottom end of the lifting source 6 is suspended from the lower lifting point 42. The lower lifting point 42 is made of a 20mm thick steel plate welded to the side of the top flange of the base ring beam 41. The steel plate has lifting holes (50mm in diameter), and reinforcing ribs are welded around the holes. In this scheme, the lifting source 66 is an electric hoist. The lower lifting point 42 is connected to the lower hook of the electric hoist through the lifting holes, serving as the force point for the base to climb, transmitting the lifting force of the electric hoist, and driving the base to climb synchronously or stepwise with the lifting frame 1.

[0025] Furthermore, combined Figure 1 The guide rail mechanism 3 includes guide rails 32 vertically arranged at the four corners of the lifting frame 1, connectors 31 that fix the guide rails 32 to the lifting frame 1, and a fixing frame 33 that fixes each guide rail 32 into one piece. The connectors 31 are horizontally inserted through the lifting frame 1 and fixed to the lifting frame 1. The two ends of the connectors 31 are respectively fixed to the two guide rails 32, and a clearance is reserved between the fixing point and the edge of the corresponding guide rail 32. The fixing frame 33 is ring-shaped, and there are retaining grooves at the four corners of the inner side. The four guide rails 32 are respectively embedded in the four retaining grooves and fixedly connected to the fixing frame 33.

[0026] Specifically, the guide rail 32 is made of I-shaped steel with a length matching the height of the construction floor. It has a smooth surface and a guide wheel mating surface on the outer side. The guide wheel serves as a support node. The inner side of the guide rail 32 is fixed to the end of the connector 31. The connector 31 is welded from Q355B 70*70*6 rectangular tube. The connector 31 is bolted to the flange of the standard section of the frame, thereby fixing the guide rail 32 and the lifting frame 1. The guide rail 32 can provide guidance for the lifting of the device, and the guide wheel on the guide rail 32 serves as the support surface of the locking assembly 21 to ensure the stability of the device.

[0027] Combination Figure 4The fixing frame 33 is welded from welded parts 331 (material: Q355B 100*100*8 rectangular tube) and 332 (material: Q355B t10 steel plate). Bolt holes are precisely drilled on the fixing frame 33 according to the dimensions and installation position of the guide rails 32. High-strength bolts with a diameter of 32mm are typically selected. The guide rails 32 are placed in the predetermined positions on the fixing frame 33, the bolt holes are aligned, the bolts are inserted, and nuts are tightened. By evenly distributing multiple bolts, the guide rails 32 are firmly fixed to the fixing frame 33. The fixing frame 33 can fix the four guide rails 32 into one unit and to the lifting frame 1, ensuring the stability of the guide rails 32. The groove shape is adapted to the guide rails 32, and the inner side of the groove has an opening that matches the size of the fixing point of the connecting part 31. This allows for a sliding fit between the groove and the guide rails 32 while ensuring that they do not detach.

[0028] Furthermore, combined Figure 1 The lifting mechanism 2 includes a lifting ring beam 22 sleeved outside the guide rail mechanism 3. The lifting ring beam 22 has a sliding groove at each of the four corners of its inner side. The four guide rails 32 of the guide rail mechanism 3 are slidably connected to the four sliding grooves respectively. The outer side of the guide rail 32 has support nodes arranged at intervals in the vertical direction. The locking assembly 21 includes a support device and a manual wrench connected to the support device through a spring reset mechanism. One end of the support device is rotatably connected to the lifting ring beam 22, and the other end is a wedge block that can abut against the bottom side of the support node. The spring reset mechanism and the manual wrench are used to provide a driving force to make the support device rotate toward or away from the support node. The lifting mechanism 2 also includes a lifting upper hoisting point 23 set on the lifting ring beam 22. The lifting upper hoisting point 23 has a hoisting position on both the bottom and top sides. The top of the lifting source 6 is connected to the hoisting position on the bottom side of the lifting upper hoisting point 23. The lifting ring beam 22 has protruding second mounting feet on opposite sides. One end of the second telescopic part 25 is inserted into the mounting groove of the second mounting foot. A screw nut mechanism connected to the second telescopic part 25 is set in the second mounting foot. A pin hole 24 is set on the second mounting foot and at a preset position of the second telescopic part 25.

[0029] Specifically, in combination Figure 5The lifting ring beam 22 is composed of welded parts 221 (material: Q355B 150*100*8 rectangular tube), 222 (material: Q355B t10 steel plate), 223 (material: Q355B steel), 224 (material: Q355B 70*70*6 rectangular tube), 225 (material: Q355B t10 steel plate), 226 (material: Q355B 70*70*6 rectangular tube), 227 (material: Q355B t10 steel plate), 228 (material: Q355B t10 steel plate), 229 (material: Q355B t10 steel plate), and 2210 (material: Q355B t10 steel plate). The frame is constructed from t10 steel plate and welded parts 2211 (material is Q355Bt10 steel plate), forming a rectangular frame. The second telescopic part 25 is a telescopic bracket. The second telescopic part 25 and the second mounting foot can be locked together by 32mm steel bar pins. The bottom of the frame of the lifting ring beam 22 can be connected to the standard section flange of the lifting frame 1 by bolts. The top connecting seat of the lifting ring beam 22 is fixed to the base of the concrete placing machine by bolts.

[0030] The lifting point 23 is made of a 20mm thick steel plate welded to the top flange of the lifting ring beam 22. The steel plate has lifting holes (50mm in diameter) and reinforcing ribs welded around the holes. There are lifting points on the top and bottom sides. The upper hook of the lifting source 66 (electric hoist) is suspended on the bottom side of the lifting point 23 to lift the base support mechanism 4.

[0031] The wedge block of the jack is made of 45 steel with a hardened surface. The wrench extends to the operating platform 7 (e.g., Figure 6 (For manual operation) During device operation, the wedge block of the support abuts against the support node (outer guide wheel of guide rail 32), locking the relative position of the lifting frame 1 ring beam and guide rail 32 to prevent the frame from swaying. Before the lifting ring beam 22 rises, the wrench is pulled in the reverse direction, the spring is in a stretched state, and the support still abuts against the support node of guide rail 32. Afterward, the lifting ring beam 22 rises, the wedge block and the support node disengage, and the support returns to its original position under the action of the spring. The wedge block is released from the constraint of guide rail 32, making it easy for the lifting ring beam 22 to slide. When it is necessary to support again, the wrench only needs to be pulled in the forward direction. Under the action of the spring, the wedge block will press against guide rail 32, and then it will be pressed against when the lifting ring beam 22 descends.

[0032] Furthermore, the self-lifting device of the fabric placing machine also includes an anti-tilt mechanism 5. The anti-tilt mechanism 5 includes an anti-tilt bracket 51 with one end fixed to the lifting frame 1 and the other end extending outward, and an anti-tilt guide wheel 52 rotatably connected to the outer end of the anti-tilt bracket 51. Specifically, the anti-tilt bracket 51 is an L-shaped steel plate (16mm thick), with one end welded to the outside of the fixing frame 33 on the standard section of the lifting frame 1, and the other end provided with a guide wheel mounting shaft. The anti-tilt guide wheel 52 is a circular wheel (100mm in diameter) made of wear-resistant cast iron, with a bearing in the center, and is sleeved on the mounting shaft. The anti-tilt guide wheel 52 contacts the elevator shaft wall. When the device climbs or operates, if a tilting tendency occurs, the anti-tilt guide wheel 52 contacts the elevator shaft wall, thereby transmitting the contact force to the guide rail mechanism 3 through the anti-tilt bracket 51 to suppress the tilt of the device. The anti-tilt guide wheel 52 can roll on the elevator shaft wall without affecting the normal climbing of the device.

[0033] Furthermore, such as Figure 6 The self-lifting device of the concrete placing boom also includes an operating platform 7 mounted on the base support mechanism 4 and the lifting mechanism 2. The operating platform 7 includes an internal steel mesh 72 and a rectangular tube frame surrounding the steel mesh 72. The size of the rectangular tube frame structure 71 is determined by the actual site size of the project and is welded to the steel mesh 72, which facilitates workers' operation of the concrete placing boom and reduces safety risks.

[0034] Furthermore, based on the aforementioned self-lifting device for the fabric placing machine, combined with Figure 1 and Figure 2 This embodiment also provides a method for lifting a fabric placing machine, including the following steps: S1. Initial preparation: Complete the installation of the self-lifting device and the concrete placing machine. The first telescopic part 44 of the base support mechanism 4 is inserted into the reserved hole 101 corresponding to the F+1 floor of the building, and the second telescopic part 25 of the lifting mechanism 2 is inserted into the reserved hole 101 corresponding to the F+2 floor of the building. The F+3 floor of the building is used as the concrete pouring layer.

[0035] At this point, the wedge-shaped block of the jack abuts against the bottom of the guide wheel on the outer side of the guide rail 32. High-strength bolts can be used to further secure the lifting ring beam 22 and the standard section flange of the lifting frame 1. Thus, under the combined action of the jack and the high-strength bolts, the stability of the lifting ring beam 22 can be achieved, ensuring its load-bearing capacity. Furthermore, the anti-tilt guide wheel 52 of the anti-tilt mechanism 5 can abut against the elevator shaft wall to prevent the device from tilting. It should be understood that the anti-tilt mechanism 5 is located below the lifting mechanism 2 and has a gap (e.g., at least 0.5 standard floor height) to ensure anti-tilt performance.

[0036] S2. Lifting Mechanism 2 Lifting: After the F+3 floor of the building is poured, control the second telescopic part 25 to retract to disengage from the reserved hole 101 corresponding to the F+2 floor of the building, lift the lifting mechanism 2 upward along the guide rail mechanism 3 to the F+3 floor, and control the second telescopic part 25 to extend out and fix it to the reserved hole 101 corresponding to the F+3 floor of the building.

[0037] Specifically, after the F+3 floor is poured, an electric hoist can be used to pre-lift the lifting ring beam 22 from a higher floor. If there are bolts fixing the lifting ring beam 22 and the lifting frame 1, remove the bolts to loosen the fixing, and turn the wrench in the opposite direction to stretch the spring. Then, the second telescopic part 25 (telescopic bracket) is driven to retract and disengage from the corresponding reserved hole 101 through the manual or electric control screw nut mechanism. At this time, the lifting ring beam 22 is no longer supported by the reserved hole 101 and can be slightly lowered while being lifted by the electric hoist, so that the wedge block and guide wheel of the support are disengaged. In this way, the lifting ring beam 22 can be smoothly slid upward along the guide rail 32 by the electric hoist. After reaching the preset height, turn the wrench in the forward direction to make the end of the support contact the guide rail 32, and drive the second telescopic part 25 (telescopic bracket) to extend into the corresponding reserved hole 101 for fixation, thereby realizing the stable fixation of the lifting ring beam 22 and the building F+3 floor, in preparation for the lifting of the base support mechanism 4 and the lifting frame 1.

[0038] S3. Lifting of base support mechanism 4: Control the first telescopic part 44 to retract to disengage from the reserved hole 101 corresponding to the F+1 floor of the building. Start the lifting source 6 to drive the base support mechanism 4 and the lifting frame 1 to rise together until the base support mechanism 4 reaches the F+2 floor of the building. Control the first telescopic part 44 to extend out and fix it to the reserved hole 101 corresponding to the F+2 floor of the building. The F+4 floor of the building is used as the concrete pouring layer.

[0039] Specifically, after the first telescopic part 44 (telescopic bracket) retracts, the base support mechanism 4 disengages from the support of the reserved hole 101 on the F+1 floor of the building. At this time, the lifting source 66 (electric hoist) provides tensile support through the lifting point 23 of the lifting ring beam 22 to prevent it from falling. Then, the lifting source 66 (electric hoist) is started to lift the base support mechanism 4. At this time, the lifting frame 1 is lifted together, and the guide rail 32 slides and rises relative to the lifting ring beam 22. During the lifting process, the anti-tilt guide wheel 52 can prevent tilting. After reaching the predetermined position, the telescopic part (telescopic bracket) is extended and fixed in the corresponding reserved hole 101 and fixed with a pin to achieve stable installation of the base support mechanism 4 on the F+2 floor. In order to improve stability, after the lifting is completed, the lifting ring beam and the lifting frame 1 can also be fixed with bolts. This completes one full climbing cycle. Subsequent operations only require repeating the above steps to enable the concrete placing machine to continuously climb upwards with the lifting frame 1, meeting the concrete placing needs of different construction floors (such as F+4, F+5, etc., depending on the actual needs of the project).

[0040] By implementing the above solution, the present invention can achieve the following effects: I. Significantly improve construction efficiency and shorten project duration Reduce equipment relocation time: Traditional concrete placing booms rely on tower cranes for dismantling and relocation, which takes 2-3 hours per trip. This invention uses a climbing frame and concrete placing boom to climb synchronously (0.5m / min at a uniform speed), which only takes 30 minutes per climb. The concrete pouring cycle for a single standard floor is shortened from 8-12 hours to 4-6 hours, and the overall construction efficiency is improved by more than 35%. Reduced manual intervention costs: Traditional processes require 8 people (4 operators + 4 pipe disconnection and reconnection personnel), while this invention only requires 2 people to complete the lifting operation of the fabric placing machine, reducing manual operation by 75% and reducing the manual time per layer by 60%; Achieving continuous construction cycle: Through the integrated "climbing-pouring" assembly line operation, there is no need to wait for tower crane resources, and continuous concrete pouring can be achieved from the 5th floor to the top floor, avoiding process interruption. Taking a 47-story super high-rise as an example, the total construction period is shortened by 15-20 days compared with the traditional process.

[0041] II. Significantly improves construction safety and reduces safety risks Dual attachment ensures structural stability: The concrete placing boom utilizes a dual attachment system of "retractable brackets + pre-drilled holes in the elevator shaft" and "high-strength bolts + climbing frame main frame," coupled with DM300 support devices (with guide rail pressure ≥0.5MPa). This reduces equipment sway from the traditional 150mm to within 30mm, and tilt angle ≤1‰, lowering safety risks by 80% compared to traditional concrete placing booms. Fully enclosed protection avoids personnel risks: The walkway on the operating platform provides an enclosed working platform for operators, equipped with guardrails (height ≥1.2m) and safety nets, completely eliminating the fall risk of traditional "high-altitude edge disconnection of pipes"; at the same time, the climbing frame has a built-in ratchet-type fall protection device, which can immediately lock the guide rail in case of power failure or hoist failure, with a fall distance ≤100mm, ensuring the safety of equipment and personnel; III. Reduce construction costs and improve project economic benefits Reduced equipment investment and rental costs: Traditional processes require multiple four-legged concrete placing booms to operate in rotation, and they occupy tower cranes for extended periods (rental price 2800 yuan / day). This invention, however, can cover an entire high-rise building with a single climbing concrete placing boom, eliminating the need for tower crane assistance and reducing equipment rental costs by 30%. Furthermore, the climbing scaffold and the concrete placing boom share pre-reserved holes in the elevator shaft, reducing the cost of attachment devices by 40%. Reduced labor and management costs: The number of workers was reduced from 8 to 2. At a daily wage of 350 yuan per person, the labor cost for a single 47-story building (42 floors of effective operation) was reduced by 117,600 yuan. The shortened construction period reduced indirect costs such as management personnel salaries and on-site water and electricity costs, resulting in an overall cost reduction of more than 25%. Reduced material waste: Traditional concrete placing booms have a concrete waste rate of about 3%-5% due to frequent disassembly and reassembly of pump pipes. This invention eliminates the need for pipe disassembly and reassembly, reducing the waste rate to below 1%. A single project (3 buildings) can save more than 120 tons of cement, further reducing material costs.

[0042] IV. Enhance scenario adaptability and overcome construction limitations Adaptable to diverse building structures and sizes: The extendable bracket of the concrete placing boom can accommodate elevator shaft width differences of ±500mm, and the climbing formwork supports 3-5m standard floor height adjustment, which can meet the pouring needs of different super high-rise structures such as core tube and frame-core tube, without the need for customized equipment for specific projects, improving versatility by 60%; Overcoming the limitations of narrow sites: Traditional ground-based concrete placing booms require an operating radius of at least 8-10m. This invention is installed inside an elevator shaft, eliminating the need for ground space. It is suitable for projects with "dense surrounding buildings and a site utilization rate of ≤60% within the red line," solving the problem of construction in narrow sites. Adaptable to high-quality pouring requirements: The boom's precise rotation (positioning deviation ≤10mm) and stable operation characteristics can meet the high requirements of pouring accuracy for fair-faced concrete, large-volume concrete, and other scenarios. The flatness error of the concrete surface is controlled within 3mm, reducing the cost of later repairs.

[0043] V. Promote technological upgrading in the industry and practice the concept of green construction. Promoting the industrialization of super high-rise construction: This invention relies on standardized pre-reserved holes, modular installation, and intelligent control to promote the transformation of super high-rise construction from "extensive manual operation" to "industrialized and refined operation," driving the standardized development of upstream and downstream industrial chains such as elevator shaft pre-reserved parts production and intelligent equipment research and development, and providing the industry with a replicable collaborative operation paradigm.

[0044] In summary, this invention not only solves the practical construction problems of concrete pouring for super high-rise residential buildings, but also forms systematic advantages in terms of efficiency, safety, cost, and environmental protection, providing core support for the upgrading of super high-rise construction technology, and has significant engineering practical value and industry promotion significance.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A self-lifting device for a fabric laying machine, applied in an elevator shaft, wherein the elevator shaft is provided with pre-reserved holes at predetermined heights, characterized in that... The self-lifting device for the fabric placing machine includes a lifting frame, a base support mechanism installed at the bottom of the lifting frame, a guide rail mechanism installed on the lifting frame, a lifting mechanism slidably mounted on the guide rail mechanism, and a lifting source connecting the base support mechanism and the lifting mechanism. The base support mechanism has a first telescopic part on its outer side that matches the reserved hole at its end. The lifting mechanism is used to install the fabric placing machine. The lifting mechanism has a second telescopic part on its outer side that matches the reserved hole at its end. The lifting mechanism also has a locking component for locking or unlocking with the guide rail mechanism. The lifting source is used to provide a pulling force to the base support mechanism toward the lifting mechanism.

2. The self-lifting device for a fabric laying machine according to claim 1, characterized in that, The lifting frame includes multiple standard frame sections, which are rectangular truss sections welded from steel, with flanges at both the top and bottom.

3. The self-lifting device for a fabric placing machine according to claim 2, characterized in that, The base support mechanism includes a base ring beam fixedly connected to the flange at the bottom of the lifting frame. The base ring beam is a rectangular steel frame structure with protruding first mounting feet on opposite sides. One end of the first telescopic part is inserted into the mounting groove of the first mounting foot. A screw nut mechanism connected to the first telescopic part is provided in the first mounting foot. Pin holes are provided on the first mounting foot and at preset positions of the first telescopic part.

4. The self-lifting device for a fabric placing machine according to claim 3, characterized in that, The base support mechanism also includes a lifting lower suspension point fixed to the base ring beam, and the bottom end of the lifting source is suspended from the lifting lower suspension point.

5. The self-lifting device for a fabric placing machine according to claim 1, characterized in that, The guide rail mechanism includes guide rails vertically arranged at the four corners of the lifting frame, connectors for fixing the guide rails to the lifting frame, and a fixing frame for fixing each guide rail as a whole. The connector is horizontally inserted through the lifting frame and fixed to the lifting frame. Both ends of the connector are respectively fixed to the two guide rails, and a clearance is reserved between the fixed part and the edge of the corresponding guide rail. The fixing frame is ring-shaped, with grooves at the four inner corners. The four guide rails are respectively embedded in the four grooves and fixedly connected to the fixing frame.

6. The self-lifting device for a fabric placing machine according to claim 1, characterized in that, The lifting mechanism includes a lifting ring beam sleeved outside the guide rail mechanism. The lifting ring beam has sliding grooves at its four inner corners. The four guide rails of the guide rail mechanism are slidably connected to the four sliding grooves respectively. The outer surface of the guide rail is provided with spaced support nodes in the vertical direction. The locking assembly includes a support device and a manual wrench connected to the support device via a spring return mechanism. One end of the support device is rotatably connected to the lifting ring beam, and the other end is a wedge block that can abut against the bottom side of the support node. The spring return mechanism and the manual wrench are used to provide a driving force to rotate the support device toward or away from the support node.

7. The self-lifting device for a fabric placing machine according to claim 6, characterized in that, The lifting mechanism also includes a lifting point disposed on the lifting ring beam, and the lifting point has a lifting position on both the bottom and top sides. The top of the lifting source is connected to the lifting position on the bottom side of the lifting point. The lifting ring beam has two protruding second mounting feet on opposite sides. One end of the second telescopic part is inserted into the mounting groove of the second mounting foot. The second mounting foot is provided with a screw nut mechanism connected to the second telescopic part. The second mounting foot and the second telescopic part are provided with pin holes at preset positions.

8. The self-lifting device for a fabric placing machine according to claim 1, characterized in that, It also includes an anti-tilt mechanism, which includes an anti-tilt bracket with one end fixed to the lifting frame and the other end extending outward, and an anti-tilt guide wheel rotatably connected to the outer end of the anti-tilt bracket.

9. The self-lifting device for a fabric placing machine according to claim 1, characterized in that, It also includes an operating platform mounted on the base support mechanism and the lifting mechanism, the operating platform comprising an internal steel mesh and a rectangular tube frame surrounding the steel mesh.

10. A method for lifting a fabric placing machine, characterized in that, The self-lifting device of the fabric placing machine as described in any one of claims 1-9 is used to achieve this, comprising the following steps: Initial preparation: Complete the installation of the self-lifting device and the concrete placing machine. The first telescopic part of the base support mechanism is inserted into the reserved hole corresponding to the F+1 floor of the building, and the second telescopic part of the lifting mechanism is inserted into the reserved hole corresponding to the F+2 floor of the building. The F+3 floor of the building is used as the concrete pouring layer. Lifting mechanism lifting: After the F+3 floor of the building is poured, the second telescopic part is controlled to retract to disengage from the reserved hole corresponding to the F+2 floor of the building. The lifting mechanism is then lifted upwards along the guide rail mechanism to the F+3 floor. The second telescopic part is then controlled to extend out of the reserved hole corresponding to the F+3 floor of the building and fixed. Lifting of the base support mechanism: Control the first telescopic part to retract to disengage from the reserved hole corresponding to the F+1 floor of the building, start the lifting source to drive the base support mechanism and the lifting frame to rise together until the base support mechanism reaches the F+2 floor of the building, control the first telescopic part to extend out and fix it to the reserved hole corresponding to the F+2 floor of the building, and the F+4 floor of the building is used as the concrete pouring layer.

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