Large-span steel structure net rack jacking device and jacking method

Abstract

The invention discloses a large-span steel structure net rack jacking device and method, and relates to the technical field of jacking devices.The large-span steel structure net rack jacking device comprises a jacking frame, and the jacking frame comprises a top cover and a first supporting column; a mounting groove is formed in the mounting seat; the hydraulic jacking part is provided with a jacking rod in an up-down sliding manner; a jacking frame; a first supporting groove is formed in the side wall of the first supporting column, and first connecting teeth are arranged on the groove wall of the first supporting groove; the supporting teeth are meshed with the first connecting teeth, upwards support the first connecting teeth, and downwards slide to be connected to the first connecting teeth; clamping grooves are formed in the bottoms of the first supporting column and the second supporting column, clamping blocks are arranged on the top of the second supporting column, and the clamping blocks are clamped into the clamping grooves; a second supporting groove is formed in the side wall of the second supporting column, second connecting teeth are arranged on the side wall of the second supporting groove, and the supporting teeth upwards support the second connecting teeth and downwards slidably connected to the second connecting teeth. According to the invention, the tedious degree of jacking construction can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of jacking devices, in particular to a large-span steel structure net rack jacking device and jacking method. BACKGROUND

[0002] Large-span steel structure net racks are widely used in modern architecture, such as sports stadiums, airport terminals, industrial plant buildings, and other buildings often use such structures. The development of installation and construction technology has brought significant value to the construction industry. It makes the construction of large-span space possible, meets the needs of large public buildings and industrial buildings for space layout and use function, promotes the progress of architectural design and construction technology, and effectively improves the safety and stability of buildings. In addition, large-span steel structure net racks also have good economy and environmental protection, reducing the use of building materials and reducing construction costs, meeting the requirements of sustainable development.

[0003] In the installation and construction of large-span steel structure net racks, in order to realize the jacking process of the net rack, the existing technology usually adopts a device composed of a power system, a support system and a bearing system. Specifically, a group of hydraulic jacks are usually used as power sources, the bottom of the jack is fixed on a solid concrete foundation or an existing structure, and the top is directly acted on the stress point below the net rack support point through a support column or a cushion block. The support column is usually a segmented standard section connected by flanges or high-strength bolts, providing a stable force transmission path for the jacking process.

[0004] However, the existing technology has obvious defects. Since the single jacking stroke is limited by the extension length of the jack and the single section height of the support column, when the jacking height is much higher than the single stroke, the "relay" method must be used. In this process, the repeated erection and removal of temporary supports not only has complicated procedures, consumes a lot of manpower and time, seriously restricts the continuity and overall speed of the jacking operation, but also increases the complexity and safety risk of construction organization due to frequent working condition changes. SUMMARY

[0005] In order to reduce the complexity of jacking construction, the present application provides a large-span steel structure net rack jacking device and jacking method.

[0006] In the first aspect, the present application provides a large-span steel structure net rack jacking device, which adopts the following technical scheme: A large-span steel structure net rack jacking device, comprising a jacking frame, a plurality of jacking frames are arranged at the bottom of the net rack, the jacking frame comprises a top cover and a first support column, and a plurality of first support columns are arranged at the bottom edge of the four corners of the top cover; A mounting seat is arranged directly below the jacking frame and corresponds one-to-one, and mounting grooves are formed at the top edge of the four corners of the mounting seat; A hydraulic lifting component is provided on the mounting base, and a lifting rod is slidably provided on the hydraulic lifting component. A lifting frame is disposed at the top of the lifting rod, and the outer peripheral sidewall of the lifting frame is slidably connected to the first support column in the vertical direction. The first support column has a first support groove on its side wall, and a plurality of first connecting teeth are evenly arranged on the top and bottom of the groove wall on the side away from the groove opening. The lifting frame sidewall is provided with a support tooth, the support tooth slides up and down in the first support groove and the support tooth meshes with the first connecting tooth, the support tooth supports the first connecting tooth upward and slides down to connect to the first connecting tooth; The second support column has multiple columns that slide in the mounting groove. The bottom of the first support column and the second support column are provided with slots. The top of the second support column is provided with a block that engages in the slot. The second support column has a second support groove on its side wall that communicates with the first support groove. The second support groove has second connecting teeth evenly arranged on the side wall away from the groove opening. The support teeth support the second connecting teeth upward and slide downward to connect with the second connecting teeth.

[0007] By adopting the above technical solution, multiple lifting frames are set at the bottom of the space frame, providing multi-point support for the space frame; the mounting base is set with corresponding mounting slots to provide a position for the installation of the second support column; the hydraulic lifting components and lifting rods enable the lifting action; the lifting frame slides with the first support column, and the meshing of the support teeth with the first and second connecting teeth ensures stable force transmission during the lifting process; the second support column is engaged with the first support column slot through a locking block, and the second support slot is connected to the first support slot, which can increase the support height during the lifting process, reduce the complexity of the erection and dismantling of temporary supports, improve the continuity and overall speed of the lifting operation, and reduce the complexity of construction organization and safety risks.

[0008] Optionally, the card block includes a first block and a second block, the first block being disposed on the second support column, and the second block being disposed on the side wall of the first block.

[0009] By adopting the above technical solution, the locking block composed of the first block and the second block can be more firmly locked into the slot, enhancing the stability of the connection between the first support column and the second support column, and ensuring the effective transmission of force during the lifting process.

[0010] Optionally, the mounting base has a first storage slot that corresponds to and communicates with the mounting slot, and a plurality of second support columns slide within the first storage slot; The mounting base is provided with an elastic driving member that drives the second support column to slide into the mounting groove. When the second support column slides into the mounting groove, the locking block is engaged in the locking groove.

[0011] By adopting the above technical solution, the second support column is stored in the first storage tank, and the second support column is automatically slid into the installation slot and the locking block is locked into the slot by the elastic drive component. This reduces the cumbersomeness of the erection and dismantling of temporary supports, improves the continuity and overall speed of the jacking operation, and reduces the complexity of construction organization and safety risks.

[0012] Optionally, the elastic driving component is a driving spring, which is installed in the first storage groove, and one end of the driving spring is connected to the groove wall of the first storage groove away from the mounting groove.

[0013] By adopting the above technical solution, the drive spring can drive the second support column to slide into the installation groove, realizing the automatic replenishment of the second support column, reducing the cumbersomeness of the temporary support erection and dismantling process, improving the continuity and overall speed of the jacking operation, and reducing the complexity of construction organization and safety risks.

[0014] Optionally, the end of the drive spring away from and near the mounting groove is provided with a first abutting block, which abuts against the side of the second support column away from the mounting groove.

[0015] By adopting the above technical solution, the first abutting block abuts against the second support column, making the force of the drive spring on the second support column more uniform and stable, and ensuring that the second support column slides smoothly into the installation groove.

[0016] Optionally, a second storage tank is provided in the mounting slot, which is connected to and adjacent to the first storage tank, and the extension direction of the first storage tank is perpendicular to the extension direction of the second storage tank. Multiple second support columns slide within the second storage tank. The mounting base is provided with a power spring that drives the second support columns to slide into the first storage tank. A second abutment block is provided at one end of the drive spring near the first storage tank. The mounting base is provided with a control component. When the second support column slides upward out of the mounting groove, the control component controls the second abutment block to slide to the side of the second reserve groove away from the mounting groove.

[0017] By adopting the above technical solution, multiple second support columns can be pre-stored using the second reserve groove and the power spring, and the second support columns can be easily slid into the first reserve groove. When the second support column slides upward out of the installation groove, the control component can automatically control the sliding of the second abutment block to achieve orderly replenishment of the second support column, reduce the cumbersomeness of temporary support erection and dismantling, improve the continuity and overall speed of jacking operation, and reduce the complexity of construction organization and safety risks.

[0018] Optionally, the control component includes a control rope, a control ball, and a control block; A control groove extending vertically is provided on the side wall of the mounting groove away from the first storage groove, and the control ball slides up and down in the control groove; The control rope is slidably inserted into the mounting base. One end of the control rope is connected to the outer peripheral side wall of the control ball, and the other end passes through the drive spring and is connected to the first abutment block. When the control ball slides upward, the control rope pulls the first abutment block away from the mounting groove; The bottom wall of the control groove has a connecting groove, and the control block is disposed on the side wall of the second support column; When the second support column slides into the mounting groove, the control block engages in the communicating groove; The top of the control block is inclined and has a control surface. When the second support column slides upward, the control surface abuts against the control ball and drives the control ball to slide upward. A receiving groove is provided on the wall of the mounting groove away from the communicating groove. When the control ball is aligned with the receiving groove, the control block pushes the control ball to slide into the receiving groove. At this time, the control block moves upward past the control ball. When the first abutment block approaches the mounting groove, the control rope pulls the control ball away from the receiving groove.

[0019] By adopting the above technical solution, the control components in the large-span steel structure space frame jacking device can realize the automatic replenishment of the second support column from the second reserve tank to the first reserve tank and then to the installation tank, which reduces the cumbersomeness of manual operation, improves the continuity and overall speed of jacking operation, reduces the consumption of manpower and time, and reduces the complexity of construction organization and safety risks.

[0020] Optionally, a reinforcing column is slidably provided on the top of the mounting base. There are multiple reinforcing columns arranged around the second support column. Each group of reinforcing columns has multiple columns and is evenly arranged in a direction away from the second support column. The mounting base is provided with a connecting spring that drives the reinforcing column to abut against the side wall of the second support column. A reinforcing block is provided on the side of the second support column away from the second support groove. A clearance groove is provided at the bottom of the reinforcing column for the reinforcing block to slide into. A reinforcing groove is provided above the clearance groove and connected to it. When the reinforcing block slides upward past the reinforcing column, the reinforcing block gets stuck in the reinforcing groove.

[0021] By adopting the above technical solution, the reinforcing column abuts against the side wall of the second support column under the action of the connecting spring, and the reinforcing block slides upward and gets stuck into the reinforcing groove, which enhances the stability between the first supports and the stability between the second support columns, and improves the overall safety and reliability of the lifting device.

[0022] Optionally, the top of the mounting base is provided with multiple sets of guide posts, and the reinforcing posts are arranged between the guide posts in the same set, with both ends of the reinforcing posts slidably connected to the sidewalls of the guide posts.

[0023] By adopting the above technical solution, the guide column can guide the sliding of the reinforcing column, enabling the reinforcing column to slide more stably and accurately and abut against the side wall of the second support column, thereby enhancing the reinforcement effect of the second support column and ensuring the stability and safety of the large-span steel structure grid lifting device during the lifting process.

[0024] Secondly, this application provides a jacking method for a large-span steel space frame, employing the following technical solution: A method for jacking up a large-span steel space frame includes the following steps: S1: Ground assembly of the space frame. Multiple raised columns are set on the ground, and the space frame is assembled and erected on the raised columns according to the design requirements, so that there is a gap between the space frame and the ground. S2: Lifting frame installation: According to design requirements, the lifting frame can be detachably fixed to the bottom of the grid frame at multiple design points for installation. S3: Mounting base installation: The mounting base is installed on the ground. The mounting base is located directly below the lifting frame and corresponds to it one by one. At the same time, the lifting frame is connected to the first support column, and the second support column is installed on the mounting base. S4: Lifting, the hydraulic lifting component drives the first support column to slide upward, causing the grid frame to rise until the card block is engaged in the card slot, the lifting rod retracts downward until the lifting frame is close to the bottom of the second support column, and then the hydraulic lifting component continues to lift upward; S5: Space frame connection. When the space frame is lifted to the predetermined height, the space frame is connected and fixed to the space frame support. S6: Remove the lifting device, and remove the lifting frame and the mounting base one by one.

[0025] By adopting the above technical solution, using the jacking device and the corresponding jacking method, the space frame can be assembled on the ground and then lifted as a whole using the jacking device. This reduces the complexity of temporary support erection and dismantling, improves the continuity and overall speed of the jacking operation, reduces the complexity of construction organization and safety risks, and also enhances the stability of the supporting structure through the combination of reinforcing columns and reinforcing blocks.

[0026] In summary, this application includes at least one of the following beneficial effects: 1. It reduces the complexity of erecting and dismantling temporary supports, and improves the continuity and overall speed of jacking operations; 2. It reduces the complexity of construction organization and safety risks. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a schematic diagram of the connection structure between the hydraulic lifting component and the lifting frame in an embodiment of this application; Figure 3 This is a schematic diagram of the connection structure between the lifting frame and the first support column in an embodiment of this application; Figure 4 yes Figure 3 Enlarged schematic diagram of part A; Figure 5 This is a schematic diagram of the connection structure between the second support column and the mounting base in an embodiment of this application; Figure 6 yes Figure 5 Enlarged schematic diagram of part B; Figure 7 This is a schematic diagram of the state when the second support column is placed in the second storage tank in an embodiment of this application; Figure 8 yes Figure 7 Enlarged schematic diagram of part C.

[0028] Reference numerals: 1. Lifting frame; 11. Top cover; 12. First support column; 121. First support groove; 122. First connecting tooth; 2. Mounting base; 21. Mounting groove; 211. Control groove; 212. Connecting groove; 213. Receiving groove; 22. First reserve groove; 23. Drive spring; 24. First abutment block; 25. Second reserve groove; 26. Power spring; 27. Second abutment block; 3. Hydraulic lifting component; 1. Lifting rod; 4. Lifting frame; 41. Support tooth; 5. Second support column; 51. Locking block; 511. First block; 512. Second block; 52. Second support groove; 53. Second connecting tooth; 54. Reinforcing block; 6. Locking groove; 7. Control assembly; 71. Control rope; 72. Control ball; 73. Control block; 731. Control surface; 8. Reinforcing column; 81. Connecting spring; 82. Reinforcing groove; 9. Guide column. Detailed Implementation

[0029] The following is in conjunction with the appendix Figures 1-8 This application will be described in further detail.

[0030] This application discloses a lifting device for a large-span steel structure space frame.

[0031] This application mainly adopts the method of setting support columns and elastic drive components in the space frame lifting device, which achieves the effect of reducing the temporary support erection and dismantling process and improving the continuity and speed of the lifting operation. The following is a further detailed description of this application.

[0032] Example 1 See Figure 1 and Figure 2 The large-span steel structure space frame jacking device provided in this application includes a jacking frame 1, a mounting base 2, a hydraulic jacking component 3, a jacking frame 4, and a second support column 5. The jacking frame 1 is located at the bottom of the space frame, the mounting base 2 is located directly below the jacking frame 1 and corresponds to it, the hydraulic jacking component 3 is located on top of the mounting base 2, the jacking frame 4 is located on top of the hydraulic jacking rod 31, and the second support column 5 slides on the mounting base 2. This achieves continuous and stable jacking during the jacking process, reducing the complexity of the temporary support erection and dismantling procedures.

[0033] Specifically, the lifting frame 1 includes a top cover 11 and multiple first support columns 12. The top cover 11 is typically a four-sided pyramidal structure, made of high-strength steel to ensure it can withstand the weight of the space frame. The shape of the top cover 11 can be designed according to the distribution of the support points of the space frame; common shapes include square and circular. The top cover 11 is installed at the bottom of the space frame and can be fixed to the space frame by welding, bolting, or other methods.

[0034] See Figure 3 and Figure 4 The first support column 12 is generally a square column structure, also made of high-strength steel. The top of the first support column 12 is fixedly connected to the four corners of the bottom edge of the top cover 11. A first support groove 121 is opened on the vertical side wall of the inward side of the first support column 12. The first support groove 121 extends vertically. A first connecting tooth 122 is fixed on the groove wall away from the groove opening. There are multiple first connecting teeth 122, which are evenly arranged vertically. Multiple first support columns 12 together support the top cover 11, transferring the weight of the grid frame to the lifting structure below. The lifting force is transferred through the cooperation of the first connecting teeth 122 with the support teeth 41 on the lifting frame 4.

[0035] See Figure 5 and Figure 6Specifically, the mounting base 2 is fixed to the ground and is located directly below the lifting frame 1, with each mounting base 2 corresponding to the other. Mounting slots 21 are provided at the four corners of the top edge of the mounting base 2. In the initial state, the space frame is raised, and there is a gap between the space frame and the mounting base 2. The first support column 12 is located directly above the mounting slots 21.

[0036] See Figure 2 and Figure 3 The mounting base 2 is generally a cuboid structure, which can be made of concrete or welded steel to ensure its stability. The mounting groove 21 is used to install the second support column 5. The shape of the mounting groove 21 is adapted to the second support column 5, and it is usually a rectangular or square groove. The size and shape of the mounting base 2 are determined according to the overall design and load-bearing requirements of the lifting device. The mounting base 2 provides a stable foundation for the entire lifting device, and the mounting groove 21 provides space for the installation and sliding of the second support column 5.

[0037] Specifically, the hydraulic lifting component 3 is equipped with a lifting rod 31.

[0038] The hydraulic jack 3 is embedded and fixed in the middle of the mounting base 2. The hydraulic jack 3 is typically a hydraulic jack driven by a hydraulic system. The lifting rod 31 slides up and down on the hydraulic jack 3, and can slide up and down under hydraulic pressure. A lifting frame 4 is fixedly installed on the top of the lifting rod 31. The lifting frame 1 has a grid-shaped or I-shaped structure. The lifting rod 31 is generally cylindrical and made of high-strength alloy steel to ensure it can withstand large lifting forces. The hydraulic jack 3 can also use other types of power devices, such as electric push rods. The hydraulic jack 3 provides power for the lifting operation, driving the lifting frame 4 and the space frame upwards through the up and down movement of the lifting rod 31.

[0039] See Figure 3 and Figure 4 Specifically, the outer peripheral sidewall of the lifting frame 4 is slidably connected to the first support column 12. The lifting frame 4 is generally made of welded steel. A support tooth 41 is also fixedly connected to the sidewall of the lifting frame 4. The support tooth 41 slides up and down within the first support groove 121, and meshes with the first connecting tooth 122. The support tooth 41 and the first connecting tooth 122 each adopt a right-angled triangular tooth structure. During lifting, the support tooth 41 supports the first connecting tooth 122 upwards; when the lifting rod 31 moves downwards, and the second support column 5 supports the first support column 12, or when the second support column 5 supports the upper second support column 5, the support tooth 41 slides downwards and connects to the first connecting tooth 122, allowing the position of the lifting frame 4 to return to its original position following the lifting rod 31. The lifting frame 4 transmits the lifting force to the first support column 12 through the cooperation of the support teeth 41 and the first support column 12, thereby driving the grid frame to rise. At the same time, the first support column 12 is restricted by the support teeth 41, reducing the possibility of swaying or deviation of the lifting frame 1.

[0040] See Figure 7 and Figure 8 Specifically, there are multiple second support columns 5, which slide in the mounting groove 21 respectively, and the second support groove 52 abuts against the opposing sides of the two relative first support columns 12 in a direction away from each other.

[0041] The second support column 5 is a square column structure, also made of high-strength steel. A locking block 51 is fixedly connected to the top of the second support column 5, and a locking groove 6 is formed at the bottom of the second support column 5. The depth of the locking groove 6 is less than the thickness of the second support column 5. The locking block 51 (the locking block 51 is located in...) Figure 4 The second support column 5 can be connected to the first support column 12 by inserting it into the slot 6.

[0042] See Figure 3 and Figure 4 The locking block 51 includes a first block 511 and a second block 512. The first block 511 is fixedly connected to the second support column 5, and the second block 512 is disposed on the side wall of the first block 511. The first block 511 and the second block 512 are typically block structures, manufactured using an integral molding method, and are made of high-strength steel. The first block 511 and the second support column 5 are formed integrally by die casting or casting. The second block 512 is fixedly connected to the side wall of the first block 511. The shape and size of the locking block 51 are designed according to the structure of the locking slot 6 to ensure smooth insertion into the slot 6. During production, by changing the number and position of the second blocks 512, the locking block 51 can be made into shapes such as a "T", a side "T", or a cross. This locking block 51 structure can more stably connect the second support column 5 and the first support column 12, improving the reliability of the connection.

[0043] The second support column 5 has a second support groove 52 on its side wall (the second support groove 52 is in Figure 8 (As indicated by the bid), the second support groove 52 has second connecting teeth 53 evenly arranged on the upper and lower sides of the side wall away from the groove opening. The second connecting teeth 53 adopt a right-angled triangular tooth structure. When the locking block 51 of the second support column 5 is engaged in the locking groove 6 of the first support column 12 and the first support column 12 and the second support column 5 are coaxially arranged, the second support groove 52 and the first support groove 121 are aligned and connected to each other. At this time, when the lifting rod 31 moves upward, the support teeth 41 support the second connecting teeth 53 upward. Correspondingly, when the locking block 51 of the next second support column 5 is engaged in the locking groove 6 of the previous second support column 5 and the lifting rod 31 moves downward, the support teeth 41 slide downward and connect to the second connecting teeth 53. During the lifting process, the second support column 5 achieves force transmission through the cooperation of the connecting teeth and the support teeth 41. At the same time, the connection between the locking block 51 and the locking groove 6 reduces the complexity of the lifting construction.

[0044] The implementation principle of the large-span steel structure space frame jacking device in Embodiment 1 of this application is as follows: This large-span steel structure jacking device achieves continuous jacking of the space frame through the coordinated operation of components such as the jacking frame 1, mounting base 2, hydraulic jacking component 3, jacking frame 4, and second support column 5. The support teeth 41 on the jacking frame 4 engage with the connecting teeth on the first support column 12 and the second support column 5, ensuring stable transmission of the jacking force. The second support column 5 is connected to the first support column 12, and adjacent second support columns 5 are connected via locking blocks 51 and locking slots 6, respectively. This significantly reduces the complexity of erecting and dismantling temporary supports in traditional jacking methods, reduces manpower and time consumption, improves the continuity and overall speed of jacking operations, and reduces the complexity of construction organization and safety risks, representing a significant improvement over existing technologies.

[0045] Example 2 See Figure 4 and Figure 6 The difference between this embodiment and the previous embodiment is that: the mounting base 2 has a first reserve groove 22 that corresponds to and communicates with the mounting groove 21. The first reserve groove 22 extends away from the mounting groove 21, and the multiple second support columns 5 abut against each other and slide within the first reserve groove 22. The mounting base 2 is provided with an elastic driving member to drive the second support columns 5 to slide into the mounting groove 21. When the second support column 5 slides into the mounting groove 21, the locking block 51 of the second support column 5 engages with the locking groove 6 of the first support column 12, or the locking block 51 of the second support column 5 on the mounting base 2 engages with the locking groove 6 of the previous second support column 5.

[0046] The first storage slot 22 is a rectangular slot located at the top of the mounting base 2, used to store and place the second support column 5. The elastic driving component is a drive spring 23, which is installed within the first storage slot 22 in a one-to-one correspondence. One end of the drive spring 23 is fixedly connected to the side wall of the first storage slot 22 away from the mounting slot 21, and the other end is fixedly connected to a first abutment block 24. The end of the first abutment block 24 away from the drive spring 23 abuts against the side of the second support column 5 away from the mounting slot 21. When the drive spring 23 is released elastically, it drives the second support column 5 to slide towards the mounting slot 21 until the first support column 12 and the second support column 5 are misaligned, or when misalignment occurs between the upper and lower second support columns 5. At this point, the drive spring 23 drives the second support column 5 adjacent to the mounting slot 21 to slide into the mounting slot 21, at which point the locking block 51 engages with the locking slot 6. When the first support column 12 or the second support column 5 slides upward, the next second support column 5, under the action of gravity and the friction between the second support column 5 and the wall of the first storage groove 22, remains within the first storage groove 22. The drive spring 23 can also be other elastic elements, such as rubber springs. The first storage groove 22 provides space for the storage of the second support column 5. The elastic drive component can automatically push the second support column 5 into the mounting groove 21, achieving automatic replenishment of the second support column 5, improving the efficiency of the jacking operation, and further reducing the complexity of the jacking construction.

[0047] The implementation principle of the large-span steel structure space frame jacking device in Embodiment 2 of this application is as follows: By setting up the first reserve slot 22 and the elastic drive component, the second support column 5 can be reserved and automatically replenished. When the second support column 5 needs to be replenished, the elastic drive component pushes the second support column 5 into the mounting slot 21, causing the locking block 51 to engage with the locking slot 6, ensuring the continuity of the jacking operation. This design reduces manual intervention, improves the automation level of the jacking operation, and reduces labor costs and construction time, showing significant advantages compared to existing technologies.

[0048] Example 3 See Figure 6 and Figure 8The difference between this embodiment and the previous embodiment is that a second storage slot 25 is provided in the mounting slot 21. The second storage slot 25 is a rectangular slot, providing more storage space for the second support column 5. The second storage slot 25 is connected to and adjacent to the first storage slot 22, and the extension direction of the first storage slot 22 is perpendicular to the extension direction of the second storage slot 25. Multiple second support columns 5 abut against each other and slide within the second storage slot 25. The mounting base 2 is provided with a power spring 26 for driving the second support column 5 to slide into the first storage slot 22. The power spring 26 is installed in the second storage slot 25. One end of the power spring 26 is fixedly connected to the wall of the second storage slot 25 away from the first storage slot 22, and a second abutting block 27 is fixedly connected to the end of the power spring 26 near the first storage slot 22. The second abutting block 27 abuts against the side of the second support column 5 in the second storage slot 25 away from the first storage slot 22. The mounting base 2 is provided with a control component 7. When the second support column 5 slides upward out of the mounting groove 21, the control component 7 controls the second abutment block 27 to slide to the side of the second storage groove 25 away from the mounting groove 21.

[0049] The control assembly 7 includes a control rope 71, a control ball 72, and a control block 73. A control groove 211 is formed on the side wall of the mounting groove 21 away from the first storage groove 22, extending vertically. The control balls 72 slide up and down within the control groove 211, corresponding one-to-one. The control rope 71 slides through the mounting base 2, corresponding one-to-one with the control balls 72. One end of the control rope 71 is fixedly connected to the outer peripheral side wall of the control ball 72, and the other end passes through the drive spring 23 and is fixedly connected to the side wall of the first abutment block 24 away from the mounting groove 21. A connecting groove 212 is formed on the bottom wall of the control groove 211, and the control block 73 is fixedly connected to the side wall of the second support column 5. Restriction strips are fixedly installed on opposite vertical walls of the control groove 211. The control block 73 slides up and down between the two opposing restriction strips, preventing the control balls 72 from detaching from the control groove 211 during use.

[0050] When multiple second support columns 5 are present in the first storage tank 22, the control rope 71 is in a relaxed state, and the second support columns 5 continuously enter the mounting tank 21. The top of the control block 73 has an inclined control surface 731, and the vertical wall of the control tank 211 away from the opening has a receiving groove 213. As the second support columns 5 move upwards, the control ball 72 abuts against the control surface 731. When the control ball 72 aligns with the receiving groove 213, it slides along the control surface 731 into the receiving groove 213, allowing the control block 73 to pass through it. After the control block 73 passes the control ball 72, the control ball 72, guided by the wall of the receiving groove 213, slides into the control tank 211 and falls onto the bottom wall of the control tank 211. Until the last second support column 5 in the first storage tank 22 slides into the mounting slot 21, the drive spring 23 drives the first abutment block 24 to slide to a position adjacent to the mounting slot 21. At this time, the control rope 71 is taut and drives the control ball 72 to abut against the bottom wall of the control slot 211. When the last second support column 5 in the first storage tank 22 slides into the mounting slot 21, the control block 73 is engaged in the connecting slot 212. Then, as the second support column 5 slides upward, the control block 73 pushes the control ball 72 upward. At this time, the control rope 71 pulls the first abutment block 24 away from the mounting slot 21, causing the drive spring 23 to enter a compressed state. When the control block 73 pushes the control ball 72 upward, the control ball 72 abuts against the control surface 731. When the control ball 72 slides upward to align with the receiving slot 213, the control ball 72 slides into the receiving slot 213. Then, as the second support column 5 continues to move upward, the control block 73 passes the control ball 72. When the control ball 72 enters the receiving groove 213, the first abutting block 24 slides to the side of the second storage groove 25 away from the mounting groove 21. At this time, the second support column 5 in the second storage groove 25 and adjacent to the first storage groove 22 slides into the first storage groove 22. Until the control block 73 passes the control ball 72, the drive spring 23 is released elastically, pushing the second support column 5 that has slid into the first storage groove 22 into the mounting groove 21. At the same time, the control rope 71 drives the control ball 72 to leave the receiving groove 213 and fall on the bottom wall of the control groove 211.

[0051] The implementation principle of a large-span steel structure space frame jacking device in Embodiment 3 of this application is as follows: By setting up a second reserve tank 25 and a control component 7, the reserve and replenishment of the second support column 5 can be managed more rationally. When the second support column 5 slides upward out of the mounting slot 21, the control component 7 can automatically control the position of the second abutment block 27, allowing the second support column 5 in the second reserve tank 25 to smoothly slide into the first reserve tank 22, ensuring a continuous supply of the second support column 5. This design further improves the continuity and efficiency of the jacking operation, reduces human interference during construction, and represents a significant improvement over existing technologies.

[0052] Example 4 See Figure 1 and Figure 2 The difference between this embodiment and the above embodiment is that: a guide column 9 is fixedly connected to the top of the mounting base 2. There are multiple sets of guide columns 9, which are arranged at 90-degree intervals around the second support column 5 with the hydraulic lifting component 3 as the center. There are two guide columns 9 in each set, which are arranged opposite to each other. Multiple sets of reinforcing columns 8 are provided on the top of the mounting column. Each set of reinforcing columns 8 corresponds to a set of guide columns 9. There are multiple reinforcing columns 8 in each set, which are slidably connected between two guide columns 9 in the same set. Each set of reinforcing columns 8 is evenly abutted in the direction away from the second support column 5. The two ends of the reinforcing columns 8 in the same set are slidably connected to the opposite sidewalls of the two guide columns 9 in the same set.

[0053] A mounting column is fixedly connected between the two guide columns 9 in the same group, at a position away from the second support column 5. The mounting base 2 is equipped with a connecting spring 81. One end of the connecting spring 81 is fixedly connected to the side wall of the mounting column near the second support column 5, and the other end of the connecting spring 81 abuts against the side wall of the reinforcing column 8 away from the second support column 5. When the connecting spring 81 is released elastically, it drives the reinforcing column 8 to abut against the side wall of the second support column 5.

[0054] See Figure 6 and Figure 8 A reinforcing block 54 is fixedly connected to the side of the second support column 5 away from the second support groove 52. The reinforcing block 54 is in the shape of a "T", a side "T", or a "+", etc. The bottom of the reinforcing column 8 has a clearance groove for the reinforcing block 54 to slide into. The reinforcing column 8 has a reinforcing groove 82 located above the clearance groove and connected to it. The reinforcing groove 82 is adapted to the reinforcing block 54. In the initial state, the reinforcing block 54 is aligned with the reinforcing groove 82. When the first support column 12 (the first support column 12 is in...) Figure 7 When the first or second support column 5 slides upward until the reinforcing block 54 is engaged in the reinforcing groove 82, the reinforcing block 54 abuts against the top wall of the reinforcing groove 82, causing the reinforcing column 8 to slide upward. At this time, the reinforcing column 8 connects to the adjacent first support column 12 or the adjacent second support column 5, which helps to improve the connection stability between the first support columns 12 and the second support columns 5. When the previous reinforcing column 8 moves upward with the first support column 12 or the second support column 5, the connecting spring 81 pushes the next reinforcing column 8 to abut against the side wall of the second support column 5.

[0055] The implementation principle of a large-span steel structure space frame jacking device in Embodiment 4 of this application is as follows: During the upward movement of the first support column 12 and the second support column 5, the reinforcement column 8 connects the adjacent first support column 12 and the adjacent second support column 5, thereby improving the stability between the first support column 12 and the second support column 5.

[0056] Example 5 On the other hand, this application discloses a jacking method for a large-span steel space frame, including the following steps: Step 1: Ground assembly of the space frame. Set up multiple raised columns on the ground, and then assemble and erect the space frame on the raised columns according to the design requirements, so that there is a gap between the space frame and the ground.

[0057] Elevation columns are typically columnar structures, made of steel or brick. The positions of the elevation columns are determined and installed on the ground according to design requirements. Then, the various components of the space frame are assembled and erected on these columns. This facilitates the subsequent installation of the lifting device and ensures the quality of the space frame assembly.

[0058] Step 2: Installation of lifting frame 1. According to design requirements, the lifting frame 1 can be detachably fixed to the bottom of the grid at multiple installation design points.

[0059] The lifting frame 1 can be installed at a designated position at the bottom of the space frame by means of bolt connection or welding, ensuring that the installation is firm and can bear the weight of the space frame.

[0060] Step 3: Install mounting base 2. Install mounting base 2 on the ground. Mounting base 2 is located directly below lifting frame 1 and corresponds to it. At the same time, lifting frame 4 is connected to first support column 12, and second support column 5 is installed on mounting base 2.

[0061] Mounting base 2 can be fixed to the ground by means of anchor bolts to ensure its stability. Lifting frame 4 is slidably connected to first support column 12, and second support column 5 is installed in mounting groove 21 and first storage groove 22 of mounting base 2.

[0062] Step 4: Lifting. The hydraulic lifting component 3 drives the first support column 12 to slide upward, causing the grid frame to rise until the locking block 51 is engaged in the locking slot 6. Then the lifting rod 31 retracts downward until the lifting frame 4 is close to the bottom of the second support column 5. Then the hydraulic lifting component 3 continues to lift upward.

[0063] After the hydraulic lifting component 3 is activated, the lifting rod 31 moves upward, driving the first support column 12 and the space frame to rise through the lifting frame 4 and the support teeth 41. When the locking block 51 engages with the locking slot 6, the lifting rod 31 retracts, preparing for the next lifting operation. This cycle repeats, achieving continuous lifting of the space frame.

[0064] Step 5: Connect the space frame. When the space frame is lifted to the predetermined height, connect and fix the space frame to the space frame support.

[0065] Once the space frame reaches the designed height, it is securely connected to the space frame supports using welding or bolting methods to ensure the stability of the space frame.

[0066] Step 6: Remove the lifting device. Remove the lifting frame 1 and the mounting base 2 one by one.

[0067] After the space frame is connected and fixed to the support column, the lifting frame 1 and the mounting base 2 are removed in sequence to facilitate subsequent construction or site cleanup.

[0068] The implementation principle of the large-span steel space frame jacking method in Embodiment 5 of this application is as follows: This jacking method, through a rational arrangement of steps, fully utilizes the characteristics of the aforementioned jacking device. From the ground assembly of the space frame to the installation of the jacking device, then to the cyclical operation of the jacking process, and finally the connection of the space frame and the dismantling of the jacking device, the entire process is carried out in an orderly manner. This method reduces the cumbersome erection and dismantling of temporary supports in traditional jacking methods, improves the continuity and efficiency of jacking operations, and reduces construction costs and safety risks, demonstrating significant advantages over existing technologies.

[0069] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A lifting device for a large-span steel structure space frame, characterized in that: It includes a lifting frame (1), which has multiple components and is respectively located at the bottom of the grid frame. The lifting frame (1) includes a top cover (11) and a first support column (12). There are multiple first support columns (12) and they are respectively located at the four corners of the bottom edge of the top cover (11). Mounting base (2) is located directly below the lifting frame (1) and corresponds to it one by one. Mounting slots (21) are respectively opened at the four corners of the top edge of the mounting base (2). A hydraulic lifting component (3) is provided on the mounting base (2), and a lifting rod (31) is provided on the hydraulic lifting component (3) for sliding up and down. A lifting frame (4) is set on the top of the lifting rod (31), and the outer peripheral sidewall of the lifting frame (4) is slidably connected to the first support column (12) in the upper and lower directions; The first support column (12) has a first support groove (121) on its side wall, and a plurality of first connecting teeth (122) are evenly arranged on the upper and lower sides of the groove wall away from the groove opening of the first support groove (121). The lifting frame (4) is provided with a support tooth (41) on its side wall. The support tooth (41) slides up and down in the first support groove (121) and the support tooth (41) meshes with the first connecting tooth (122). The support tooth (41) supports the first connecting tooth (122) upward and slides downward to connect with the first connecting tooth (122). The second support column (5) has multiple columns and slides in the mounting groove (21). The bottom of the first support column (12) and the second support column (5) are provided with slots (6). The top of the second support column (5) is provided with a locking block (51). The locking block (51) is inserted into the slot (6). The second support column (5) has a second support groove (52) that communicates with the first support groove (121) on its side wall. The second support groove (52) has second connecting teeth (53) evenly arranged on the side wall away from the groove opening. The support teeth (41) support the second connecting teeth (53) upward and slide downward to connect with the second connecting teeth (53).

2. The large-span steel structure space frame jacking device according to claim 1, characterized in that: The card block (51) includes a first block (511) and a second block (512). The first block (511) is disposed on the second support column (5), and the second block (512) is disposed on the side wall of the first block (511).

3. The large-span steel structure space frame jacking device according to claim 2, characterized in that: The mounting base (2) has a first storage slot (22) that corresponds to and is connected to the mounting slot (21), and a plurality of second support columns (5) slide in the first storage slot (22); The mounting base (2) is provided with an elastic drive member that drives the second support column (5) to slide into the mounting groove (21). When the second support column (5) slides into the mounting groove (21), the locking block (51) is locked into the locking slot (6).

4. The large-span steel structure space frame jacking device according to claim 3, characterized in that: The elastic driving component is a driving spring (23), which is installed in the first storage groove (22). One end of the driving spring (23) is connected to the side wall of the first storage groove (22) away from the mounting groove (21).

5. The large-span steel structure space frame jacking device according to claim 4, characterized in that: The drive spring (23) is provided with a first abutting block (24) at the end away from the mounting groove (21), and the first abutting block (24) abuts against the side of the second support column (5) away from the mounting groove (21).

6. The large-span steel structure space frame jacking device according to claim 5, characterized in that: The mounting slot (21) is provided with a second storage slot (25) that is connected to and adjacent to the first storage slot (22). The extension direction of the first storage slot (22) is perpendicular to the extension direction of the second storage slot (25). Multiple second support columns (5) slide in the second storage tank (25). The mounting base (2) is provided with a power spring (26) that drives the second support columns (5) to slide into the first storage tank (22). A second abutment block (27) is provided at one end of the drive spring (23) near the first storage tank (22). The mounting base (2) is provided with a control component (7). When the second support column (5) slides upward out of the mounting groove (21), the control component (7) controls the second abutment block (27) to slide to the side of the second storage groove (25) away from the mounting groove (21).

7. The large-span steel structure space frame jacking device according to claim 6, characterized in that: The control component (7) includes a control rope (71), a control ball (72), and a control block (73); The mounting groove (21) has a vertically extending control groove (211) on the side wall away from the first storage groove (22), and the control ball (72) slides up and down in the control groove (211); The control rope (71) slides through the mounting base (2), one end of the control rope (71) is connected to the outer peripheral side wall of the control ball (72), and the other end passes through the drive spring (23) and is connected to the first abutment block (24); When the control ball (72) slides upward, the control rope (71) pulls the first abutment block (24) away from the mounting groove (21). The bottom wall of the control groove (211) is provided with a connecting groove (212), and the control block (73) is disposed on the side wall of the second support column (5); When the second support column (5) slides into the mounting groove (21), the control block (73) is engaged in the communicating groove (212); The top of the control block (73) is inclined to form a control surface (731). When the second support column (5) slides upward, the control surface (731) abuts against the control ball (72) and drives the control ball (72) to slide upward. The mounting groove (21) has a receiving groove (213) on its wall away from the connecting groove (212). When the control ball (72) is aligned with the receiving groove (213), the control block (73) pushes the control ball (72) to slide into the receiving groove (213). At this time, the control block (73) moves upward past the control ball (72). When the first abutting block (24) approaches the mounting groove (21), the control rope (71) pulls the control ball (72) away from the receiving groove (213).

8. The large-span steel structure space frame jacking device according to claim 1, characterized in that: The mounting base (2) is slidably provided with a reinforcing column (8) on its top. There are multiple reinforcing columns (8) arranged around the second support column (5). Each group of reinforcing columns (8) has multiple columns and is evenly arranged in a direction away from the second support column (5). The mounting base (2) is provided with a connecting spring (81) that drives the reinforcing column (8) to abut against the side wall of the second support column (5). The second support column (5) is provided with a reinforcing block (54) on the side away from the second support groove (52). The bottom of the reinforcing column (8) is provided with a clearance groove for the reinforcing block to slide into. The reinforcing column (8) is provided with a reinforcing groove (82) located above the clearance groove and connected to it. When the reinforcing block (54) slides upward past the reinforcing column (8), the reinforcing block (54) gets stuck in the reinforcing groove (82).

9. A large-span steel structure space frame jacking device according to claim 8, characterized in that: The mounting base (2) has multiple sets of guide posts (9) arranged opposite each other on its top. The reinforcing post (8) is arranged between the guide posts (9) in the same set. The two ends of the reinforcing post (8) are slidably connected to the side wall of the guide post (9).

10. A method for jacking a large-span steel space frame, comprising a jacking device for a large-span steel space frame as described in any one of claims 1-9, characterized in that, Includes the following steps: S1: Ground assembly of the space frame. Multiple raised columns are set on the ground, and the space frame is assembled and erected on the raised columns according to the design requirements, so that there is a gap between the space frame and the ground. S2: Installation of the lifting frame (1): According to the design requirements, the lifting frame (1) can be detachably fixed to the bottom of the grid frame at multiple installation design points; S3: Mounting base (2) installation: The mounting base (2) is installed on the ground. The mounting base (2) is located directly below the lifting frame (1) and corresponds to it. At the same time, the lifting frame (4) is connected to the first support column (12), and the second support column (5) is installed on the mounting base (2). S4: Lifting, the hydraulic lifting component (3) drives the first support column (12) to slide upward, driving the grid frame to rise until the card block (51) is inserted into the card slot (6), the lifting rod (31) retracts downward until the lifting frame (4) is close to the bottom of the second support column (5), and then the hydraulic lifting component (3) continues to lift upward; S5: Space frame connection. When the space frame is lifted to the predetermined height, the space frame is connected and fixed to the space frame support. S6: Remove the lifting device, and remove the lifting frame (1) and the mounting base (2) one by one.

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