Patent Application
20220227609
This application claims the priority benefit of China application serial no. 202110076409.1, filed on Jan. 20, 2021. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification.
The present invention relates to the field of lifting of assembled members in civil engineering, and particularly relates to an integral lifting system and lifting method for assembled members.
An assembled structure is a form of structure produced and manufactured in a factory in a prefabricated manner and transported to a site for assembly. Compared with a traditional cast-in-place structure, the assembled structure has the advantages of high production and installation speed, high building quality, green and environment-friendly effects of operation environments, low construction process cost and the like, and is thus widely used in China in recent years.
Compared with a cast-in-place structure, the assembled structure has the advantages that prefabricated members of the assembled structures have heavy mass and big volumes, the required quantity is great, and additionally, the requirements on lifting precision and stability in the lifting process are high, so that great-tonnage and high-performance hoisting equipment is needed. At present, common hoisting equipment in China is mainly a tower crane and a self-propelled crane. The tower crane can be mounted at a side surface of a building or in an elevator pipeline inside the building, and can realize high-altitude operation. However, the existing tower crane in China has limited tonnage, group tower operation is generally needed in a construction site, and a higher requirement is provided for construction management. The self-propelled crane is more convenient and flexible in construction, but has the limited lifting height, and is often matched with a tower crane for use. The two traditional lifting modes are not optimal lifting solutions for the assembled member, and there is an urgent need for large-scale lifting equipment for assembled members with the advantages of great lifting tonnage, lifting stability, high installation precision and capability of being reliably connected with a building body in a construction site.
Invention objectives: to realize fast and stable lifting of big-volume great-tonnage assembled members, to require the whole lifting system to realize installation convenience and a reliable connection mode with a building body at the same time, and to achieve a high safety coefficient. Therefore, an integral lifting system and lifting method for assembled members are provided, and are used to complete a lifting process of the assembled members.
Technical solution: in order to achieve the above objectives, the present invention adopts the following technical solution. An integral lifting system for assembled members includes fixing mechanisms and more than four vertical stand columns. The four vertical stand columns are located at four corners of a building, the building is located in a region encircled by the vertical stand columns, a transverse rail beam is disposed between every two vertical stand columns, one end of the transverse rail beam is mounted at a top portion of one vertical stand column, and the other end of the transverse rail beam is mounted on a top portion of the other stand column. The transverse rail beam is provided with an operation trolley, a jib crane is disposed on an upper surface of the operation trolley, and lifting mechanical arms are disposed on an outer side surface of the operation trolley. A hydraulic jacking mechanism is disposed at bottom portions of the vertical stand columns.
Each of the vertical stand columns includes more than two vertically disposed first cuboid frameworks, each of the first cuboid frameworks is formed by welding first vertical square steel pipes and first horizontal square steel pipes, and connecting sheets are respectively disposed on two side surfaces of the vertical square steel pipes at one side of the first cuboid frameworks near a facade of the building. The connecting sheets are configured to be vertically and slidingly connected with the fixing mechanisms. First connecting lugs are disposed on the horizontal square steel pipes at upper and lower ends of each of the first cuboid frameworks, and the vertically adjacent two first cuboid frameworks are fixedly connected through the first connecting lugs.
The transverse rail beam includes operation rails and more than two transversely disposed second cuboid frameworks, each of the second cuboid frameworks is formed by welding second vertical square steel pipes and second horizontal square steel pipes, second connecting lugs are disposed on the second vertical square steel pipes at the left and right ends of each of the second cuboid frameworks, and the left and right adjacent two second cuboid frameworks are fixedly connected through the second connecting lugs. The operation rails are mounted on an upper surface of the second cuboid frameworks, and the operation rails are two parallel I-shaped rails.
The hydraulic jacking mechanism includes a fixing platform, steel anchor bolts, hydraulic oil cylinders, a jacking platform, a clamper, rotating gears and two lifting frames. The steel anchor bolts are fixed to a lower surface of the fixing platform, the hydraulic oil cylinders are fixedly mounted on an upper surface of the fixing platform, pistons of the hydraulic oil cylinders are fixedly mounted on an lower surface of the jacking platform, the clamper and the lifting frames are all fixedly mounted on the upper surface of the jacking platform, the clamper is positioned between the lifting frames, vertical wave-shaped grooves are formed in the lifting frames, the rotating gears are mounted on the jacking platform through a first rotating shaft, and the wave-shaped grooves are meshed and connected with the rotating gears.
Each of the fixing mechanisms includes steel grooves matched with the connecting sheets, support sheets, pin shafts, springs and a fixing plate. The steel grooves are welded onto the fixing plate, the fixing plate is fixed to a prefabricated member of the building through screw bolts, a forming direction of the steel grooves is identical to a sliding direction of the connecting sheets, and each of the support sheets is mounted on the top of the corresponding steel groove through the pin shafts, thereby realizing the rotation of the support sheets around the top portions of the steel grooves through the pin shaft. One end of each of the springs is fixed onto the fixing plate, and the other end each of the springs is fixed to a lower surface of the corresponding support sheet.
The operation trolley includes two first rear wheels, two first front wheels, second rotating shafts, fixing buckles, a trolley body, a conveying belt, third rotating shafts and rotating wheels. The vehicle body includes a trolley top plate and two trolley side plates. The two trolley side plates are respectively mounted at two sides of a lower surface of the trolley top plate. The second rotating shaft respectively penetrates through a center of each of the first rear wheels and a center of each of the first front wheels. Each of the second rotating shafts is a driving device, and is able to drive the corresponding first rear wheel or first front wheel to enable the trolley to move on the transverse rail beams. The fixing buckles are connected to two sides of the second rotating shafts. The upper ends of the fixing buckles are fixed to the lower surface of the trolley top plate. The first rear wheels and the first front wheels are in transmission connection through the conveying belt. One end of each of the third rotating shafts is disposed on the trolley side plate, the other end of each of the third rotating shafts is connected with the rotating wheels, the number of the rotating wheels is four, the two of the rotating wheels are located below the first front wheels, and the other two rotating wheels are located below the first rear wheels. The first rear wheels and the first front wheels are located at upper surfaces of the operation rails, and the rotating wheels are located in rail grooves at outer sides of middle portions of the operation rails.
The jib crane includes a rotary platform, third connecting lugs, a rotary shaft, a jib boom, a pole derrick, a steering rod, a first windlass, a second windlass and a first lifting hook. The rotary platform is mounted on an upper surface of the operation trolley, the third connecting lugs are disposed on the rotary platform, and the jib boom is rotationally connected with the third connecting lugs through the rotary shaft, so that the jib boom rotates in a vertical plane. The pole derrick and the first windlass are fixedly mounted on the rotary platform, the steering rod is disposed on a top portion of the pole derrick, and steel wire ropes fixed to an end portion of the jib boom bypass the steering rod at the top portion of the pole derrick to be wound on the first windlass and are configured to drag the jib boom to move. The second windlass is disposed at a bottom portion of the jib boom. The first lifting hook is disposed at the end portion of the jib boom, and steel wire ropes fixed to an end portion of the first lifting hook pass through the jib boom to be wound on the second windlass.
Each of the lifting mechanical arms includes horizontal I-shaped steel, vertical I-shaped steel, an L-shaped support frame, annular clamp buckles, a third windlass, first binding rings, second binding rings, a second lifting hook and a third lifting hook. The vertical I-shaped steel is fixedly mounted on the outer side surface of the operation trolley, and a lower surface of one end of the horizontal I-shaped steel near the operation trolley is fixedly connected to an outer side surface of the operation trolley through the L-shaped support frame. An included angle between the vertical I-shaped steel and the horizontal I-shaped steel is 90°. The first binding rings are disposed on the vertical I-shaped steel, the second binding rings are disposed above an outer end surface and a middle portion of the horizontal I-shaped steel, one end of each steel wire rope is connected with the corresponding first binding ring, and the other end of each steel wire rope is connected with the corresponding second binding ring. The annular clamp buckles are disposed below the outer end surface and the middle portion of the horizontal I-shaped steel to be used as fixed lifting points, and the steel wire ropes fixed to an end portion of the second lifting hook and an end portion of the third lifting hook respectively pass through the fixed lifting points to be wound on the third windlass.
Preferably, the integral lifting system for assembled members further includes lifting tools. Each of the lifting tools includes two transverse lifting beams, four L-shaped clampers and a lifting disc. Each of the transverse lifting beams includes hollow first square-shaped steel and second square-shaped steel, the second square-shaped steel is disposed in the first square-shaped steel, the second square-shaped steel is slidingly connected with the first square-shaped steel, the upper ends of the L-shaped clampers are fixedly connected with the second square-shaped steel, and clamping openings of the two L-shaped clampers on the same transverse lifting beam are disposed oppositely. Two first lifting rings are disposed on each of the first square-shaped steel, the lifting disc and the first lifting rings are connected through steel wire ropes, and a second lifting ring is disposed on the lifting disc. The second lifting ring is configured to hang the first lifting hook and/or the second lifting hook and/or the third lifting hook.
Preferably, each of the lifting frames is of a rectangular structure formed by welding vertical lifting steel pipes and horizontal fixed steel pipes.
Preferably, third inclined struts are welded in a framework plane of the rectangular structure of each of the lifting frames.
Preferably, fixing sheets are configured for reinforced connection in connecting positions of the hydraulic oil cylinders and the fixing platform.
Preferably, a first inclined strut is welded in a framework plane of each of four side surfaces of the first cuboid frameworks.
Preferably, a second inclined strut is welded in a framework plane of each of four side surfaces of the second cuboid frameworks.
Preferably, the number of the vertical stand columns is at least four.
Another technical objective of the present invention is to provide an integral lifting method for assembled members, realized based on the above integral lifting system for assembled members, and the method includes the following steps.
Step 1: after building integral positioning and stringing and completion of underground work construction, determining arrangement positions and a quantity of the vertical stand columns according to a scale of the building and a weight of prefabricated assembled members, fixing the hydraulic jacking mechanism in a corresponding position in advance, ensuring firmness and reliability of the steel anchor bolts, and inspecting performance of the hydraulic oil cylinders and the matched pistons.
Step 2: firstly fixing a first section of the first cuboid framework of the vertical stand column onto the jacking platform of the hydraulic jacking mechanism, and performing tight clamping by the clamper; then, taking the hydraulic jacking mechanism as a base to connect the vertical stand column with the transverse rail beams through the first connecting lugs, the second connecting lugs and the screw bolts, and mounting the operation trolley and lifting machinery on the transverse rail beams, wherein the lifting machinery includes the jib crane and the lifting mechanical arms; and then, debugging the lifting machinery to ensure normal operation in use.
Step 3: enabling the hydraulic oil cylinders and the matched pistons of the hydraulic lifting mechanism to start to operate, jacking the whole lifting system until the connecting sheets of the first section of the first cuboid framework pass through first steel grooves of the fixing mechanism and get supported by the support sheets horizontally disposed on upper sides of the first steel grooves so as to complete fixation between the lifting system and a building body, then completing a jacking process, and resetting the hydraulic oil cylinders and the matched pistons.
Step 4: completing lifting and assembly of all assembled members of a first storey of the building corresponding to the first section of the first cuboid framework of the building through mutual cooperation of the operation trolley, the jib crane and the lifting mechanical arms, wherein during the lifting of the assembled members, the following two modes are adopted according to volumes of the assembled members.
For small-size assembled members, a single-point lifting mode is adopted, and the assembled members are able to be lifted to a specified height only by using the jib crane cooperating with a lifting disc.
For big-size assembled members, a four-point lifting mode is adopted, the lifting mechanical arms are used, and cooperates with a lifting tool in a specific structure form to lift the assembled members to a specified height; in this process, the first lifting hook of the jib crane only cooperates with the second lifting hook and/or the third lifting hook; after the assembled members reach a specified height, the lifting mechanical arms stop operation, the jib crane further ascends, first lifting rings on transverse lifting beams are disengaged from the second lifting hooks and/or third lifting hooks of the lifting mechanical arms, and the assembled members are conveyed by the jib crane to a specified position for installation until the assembly of all assembled member of a current storey of the building is completed.
The lifting tool includes the transverse lifting beams, L-shaped clampers, the lifting disc and steel wire ropes; the first lifting rings on the transverse lifting beams are connected with the second lifting hooks and/or third lifting hooks of the lifting mechanical arms, and then, a second lifting ring on the lifting disc is connected with the first lifting hook of the jib crane;
Step 5: upwards jacking the lifting system for a standard section by using the hydraulic jacking mechanism until the first section of the first cuboid framework passes through second steel grooves of the fixing mechanism and gets supported by support sheets horizontally disposed on upper sides of the second steel grooves, and resetting the hydraulic oil cylinders and the matched pistons; and then, putting a new section of the first cuboid framework at a bottom portion of the lifting system, and completing fixation of the two sections of the first cuboid frameworks with the first connecting lugs and the screw bolts; and
repeating steps 3 to 5 until the installation of the assembled members of each storey of the whole building is completed.
Compared with the prior art, the present invention has the following beneficial effects that compared with the prior art, the integral lifting system of the present invention is convenient and fast in installation, and occupies a small area of a construction site. The integral lifting system after installation is in a cage shape completely warping the building, reliable connecting devices are disposed between the integral lifting system and the building, the whole structure has a high safety coefficient. Through the cooperative use of the operation trolley, the jib crane, the lifting mechanical arms and the lifting tools, the stable lifting of great-tonnage heavy-weight assembled members can be realized, the lifting requirements of members in various sizes and specifications can be met, and the lifting requirements of members in different positions of the construction site can also be met.
The present invention will be further illustrated with reference to the drawings and specific embodiments, it should be understood that these examples are only used for illustrating the present invention and are not intended to limit the scope of the present invention, and modifications of various equivalent forms of the present invention made by those skilled in the art upon reading the present invention all fall within the scope of the appended claims.
An integral lifting system for assembled members, as shown in
The transverse rail beam 2 is provided with an operating trolley 5, a jib crane 6 is disposed on an upper surface of the operating trolley 5, and lifting mechanical arms 7 are disposed on an outer side surface of the operating trolley 5, and are configured to meet the lifting requirements of different positions. Lifting tools can ensure the stability of the members in the lifting process. The operation trolley 5 drives the jib crane 6 and the lifting mechanical arms 7 to do reciprocating movement on the transverse rail beams 2, and cooperates with the lifting tools 8 to be used to complete the lifting process. A hydraulic jacking mechanism 3 is disposed at the bottoms of the vertical stand columns 1, and the hydraulic jacking mechanism 3 is configured to jack the structure.
As shown in
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Vertical wave-shaped grooves 314 are formed in the lifting frames 309, rotating gears 308 are connected to two opposite side surfaces of the jacking platform 306 through four first rotating shafts in two groups, i.e., the rotating gears 308 are mounted on the jacking platform 306 through a first rotating shaft, and the wave-shaped grooves 314 are meshed and connected with the rotating gears 308. The lifting frames 309 are disposed in corresponding positions on the fixing platform 301, each of the lifting frames 309 is of a rectangular structure formed by welding vertical lifting steel pipes 310 and horizontal fixed steel pipes 312, and third inclined struts 313 are welded in a framework plane of the rectangular structure of each of the lifting frames 309. The rotating gears 308 can vertically move along the wave-shaped grooves 314, and are configured to ensure the coordinate and consistent jacking speeds and jacking heights of the four hydraulic oil cylinders 303 during the jacking of the hydraulic jacking mechanism 3.
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A use process of the present invention will be described in conjunction with
1. After building integral positioning and stringing and completion of underground work construction, arrangement positions and the quantity of vertical stand columns 1 are determined according to the scale of the building and the weight of prefabricated assembled members, a hydraulic jacking mechanism 3 is fixed in a corresponding position in advance, firmness and reliability of steel anchor bolts 302 are ensured, and performance of hydraulic oil cylinders 303 and matched pistons 304 is inspected.
2. A first section of a first cuboid framework 101 of the vertical stand column 1 is fixed onto a jacking platform 306 of the hydraulic jacking mechanism 3, and is tightly clamped by a clamper 307. The hydraulic jacking mechanism 3 is taken as a base to connect the vertical stand column 1 with transverse rail beams 2 through first connecting lugs 106, second connecting lugs 206 and screw bolts 12. An operation trolley 5, a jib crane 6 and a lifting mechanical arm 7 are mounted on the transverse rail beams 2. Each kind of lifting machinery (the jib crane 6 and the lifting mechanical arm 7) should be debugged without errors before use.
3. Before the lifting of the assembled members, fixation is performed by lifting tools 8. For small-size assembled members, a single-point lifting process can be completed by only using the jib crane 6 cooperating with a lifting disc 807. For big-size assembled members, the assembled members need to be fixed by transverse lifting beams 801, L-shaped clampers 802, a lifting disc 807 and steel wire ropes 9. First lifting rings 805 on the transverse lifting beams are connected with the second lifting hooks 708 and/or third lifting hooks 709 of the lifting mechanical arms 7, and the second lifting ring 806 on the lifting disc 807 is connected with the first lifting hook 609 of the jib crane 6. Firstly, four-point lifting is performed by using the lifting mechanical arms 7, so as to lift the assembled members to a specified height. In this process, the jib crane 6 does not undertake the main lifting tasks, and only cooperate with the lifting hooks. After the specified height is reached, the lifting mechanical arms 7 stop operation, the jib crane 6 further ascends, the first lifting rings 805 on the transverse lifting beams are disengaged from the second lifting hook 708 and/or the third lifting hook 709 of the lifting mechanical arm 7, and the assembled members are conveyed by the jib crane 6 to a specified position for installation. This process is repeated by the lifting work in each storey.
4. Through the mutual cooperation of the operation trolley 5, the jib crane 6 and the lifting mechanical arms 7, the installation process of the assembled members of the first storey is completed. Then, the hydraulic oil cylinders 303 and the matched pistons 304 of the hydraulic lifting mechanism 3 start to operate, jacking the whole lifting system until the fixation between the lifting system and a building body is completed through the connecting sheets 105 of the vertical stand columns 1 and the steel grooves 401 and the support sheets 402 of the fixing mechanisms, the jacking process is completed, the hydraulic oil cylinders 303 and the matched pistons 304 are reset, and the lifting system continuously completes lifting work at this height. After the lifting work at this height is completed, the lifting system is upwards jacked for a standard section by the hydraulic jacking mechanism 3 again, after the hydraulic oil cylinders 303 and the matched pistons 304 are reset, a new section of the first cuboid framework 101 is put at the bottom portion of the lifting system, and fixation of the two sections of the first cuboid frameworks 101 is completed with first connecting lugs 106 and screw bolts 10. This process is repeated in the subsequent jacking process.
The present invention has the advantages of convenient installation and construction, high safety, great lifting capacity and lifting stability, is applicable to lifting of assembled members in various specifications, improves the construction efficiency, and has good economic and technical values.
The foregoing descriptions are only exemplary implementations of the present invention. It should be pointed out that those skilled in the art can also make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications are also included within the protection scope of the present invention.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202110076409.1 | Jan 2021 | CN | national |
