Grid lattice support equalized jacking and unloading device

Abstract

The present invention relates to the technical field of grid frame construction, and particularly to a balanced jacking and unloading device for a lattice truss support frame of a grid frame; it includes at least four telescopic devices fixedly installed on the ground and a number of lattice truss support frames, and the top side and the bottom side of the lattice truss support frame are detachably connected; the lattice truss support frame includes four vertical rods detachably connected together, and the connected vertical rods form a three-dimensional support structure, and a sleeve is installed on each vertical rod; when jacking the lattice truss support frame, the four telescopic devices jack the same lattice truss support frame simultaneously, with multi-point support and balanced jacking, avoiding the collapse of the lattice truss support frame due to central deviation during the jacking process; during the disassembly process, multiple support points formed by multiple telescopic devices are synchronously and evenly unloaded, reducing the risk of structural damage caused by stress mutation at the support points during the unloading process, and avoiding the deformation, fracture or even collapse of the grid frame due to uneven stress.

Description

Technical Field

[0001] The present invention relates to the technical field of grid frame construction, and particularly to a balanced jacking and unloading device for a lattice type support frame of a grid frame. Background Art

[0002] A grid frame structure is a space structure formed by connecting members such as steel pipes through spherical joints, and has the advantages of light weight, large stiffness, good seismic performance, etc., and is suitable for large public buildings such as stadiums, theaters, stations, entertainment venues, etc. and industrial buildings such as workshops with large column spacings; when constructing a large grid frame, a construction method of "ground pre-assembly of lattice type support frames + integral jacking + concrete pouring of truss floor slabs + curing and forming" is often adopted. During the construction process, it is necessary to jack and unload the lattice type support frames; after the composite steel grid frame structure is formed, it is necessary to remove the temporary jacking support points formed by the lattice type support frames. During the unloading process, the structure gradually transitions from multi-point support to the support method of the original design condition, and the vertical load gradually transitions from the jacking support points to the structural supports. Therefore, it is necessary to ensure the balanced synchronization of unloading at multiple support points during the construction process, otherwise the grid frame may be deformed, fractured or even collapsed due to uneven stress; during the jacking process of the lattice type support frame, it is also necessary to ensure the balanced force of the lattice type support frame to avoid the situation of tipping due to center offset of the lattice type support frame. Summary of the Invention

[0003] Aiming at the deficiencies in the prior art, the present invention provides a balanced jacking and unloading device for a lattice type support frame of a grid frame, which solves the problem that the lattice type support frame cannot be evenly stressed during jacking and unloading in the construction of a grid frame in the prior art.

[0004] According to an embodiment of the invention, a balanced jacking and unloading device for a lattice type support frame of a grid frame includes at least four telescopic devices fixedly installed on the ground and a plurality of lattice type support frames, and the top side and the bottom side of the lattice type support frame are detachably connected;

[0005] The lattice type support frame includes four upright rods detachably connected together, and the connected upright rods form a three-dimensional support structure. A sleeve is installed on each upright rod, and a closing member for closing the top side of the sleeve is detachably connected to the top side of the sleeve. The sleeve includes a fixed sleeve fixedly connected to the upright rod and a movable sleeve detachably connected to the fixed sleeve. When the movable sleeve is connected to the fixed sleeve, the telescopic device is sleeved therein, and when separated, it is separated from the telescopic device.

[0006] In this embodiment, when jacking up the lattice support frame, the telescopic device is fixedly installed on the ground at the construction site, and then the lattice support frame is assembled. The four vertical rods are connected together to form a three-dimensional support structure; the fixed kits on the vertical rods are connected to the movable kits, and the telescopic device is placed inside the sleeve; the telescopic ends of all the telescopic devices are controlled to remain in the retracted state, and then the closure is connected to the top side of the sleeve; then, the telescopic ends of all the telescopic devices are controlled to extend. The telescopic ends jack up the closure, the sleeve connected to the closure, and the vertical rod connected to the sleeve, so as to jack up the entire lattice support frame. When jacked up to a certain height, the next lattice support frame (excluding the closure) is assembled under the jacked-up lattice support frame according to the above steps, and the jacked-up lattice support frame is connected to the lower lattice support frame. Then, the telescopic ends of the telescopic devices are controlled to retract. At this time, the two connected lattice support frames are placed on the ground, and the telescopic ends of the telescopic devices are retracted and stored in the sleeves of the lattice support frame close to the ground. Then, the closure of the lattice support frame close to the ground is assembled with the sleeve. After the assembly is completed, the jacking of the next lattice support frame can be carried out; repeating the above operations can continuously jack up several lattice support frames until the combined lattice support frames can support the grid to be constructed. The four telescopic devices jack up the same lattice support frame at the same time, with multi-point support and balanced jacking, avoiding the collapse of the lattice support frame due to central offset during the jacking process. And after the installation is completed, the lowermost lattice support frame is placed on the ground, and the fixedly installed telescopic device is sleeved in the sleeve of the lattice support frame, which can play a limiting role.

[0007] When unloading the lattice support frame, the closure on the lowermost lattice support frame is removed, the telescopic ends of the telescopic devices are controlled to extend into the sleeves of the upper lattice support frames connected with the closures, and then the lowermost lattice support frame is disassembled; after the disassembly is completed, the telescopic ends of the telescopic devices are controlled to retract until the lowermost lattice support frame is placed on the ground at this time; repeating the above operations can disassemble the lattice support frames from bottom to top in sequence; and during the disassembly process, the multiple support points formed by the multiple telescopic devices unload synchronously and evenly, reducing the risk of structural damage caused by stress mutation at the support points during the unloading process, and avoiding the deformation, fracture or even collapse of the grid due to uneven force.

[0008] Further, the lattice support frame further includes a horizontal rod detachably connected to the vertical rod. The four vertical rods are distributed in a rectangle, and at least two horizontal rods are arranged between two adjacent vertical rods. One of the horizontal rods is fixedly connected to the tops of the two vertical rods, and the other horizontal rod is fixedly connected to the bottoms of the two vertical rods.

[0009] Further, the lattice support frame further includes diagonal bars, and two ends of each diagonal bar are detachably connected to two adjacent vertical rods respectively.

[0010] Further, first connecting plates are fixedly connected to both the top end and the bottom end of the vertical rod.

[0011] Further, a second connecting plate detachably connected to the horizontal rod and a third connecting plate connected to both the horizontal rod and the diagonal bar are fixedly connected to the side wall of the vertical rod.

[0012] Further, the fixing kit includes an arc-shaped groove, the movable kit is an arc-shaped plate, and the telescopic device is a cylindrical hydraulic rod.

[0013] Further, a plurality of first bumps are arranged on both sides of the arc-shaped groove of the fixing kit, a plurality of second bumps are arranged on the side surfaces of two free ends of the arc-shaped plate, the first bumps and the second bumps are arranged alternately, a first connecting screw hole is formed in the first bump, a second connecting screw hole is formed in the second bump, when the arc-shaped plate and the fixing kit are closed, the first connecting screw hole is aligned with the second connecting screw hole for a long screw to pass through together.

[0014] Further, the closing member is detachably connected to the top sides of the fixing kit and the movable kit through a bolt structure.

[0015] Further, the telescopic device is fixedly connected to a base fixedly connected to the ground.

[0016] Further, the base is an I-shaped steel section.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] In this embodiment, when the lattice support frame is lifted, four telescopic devices lift the same lattice support frame simultaneously, with multi-point support and balanced lifting, avoiding the collapse of the lattice support frame due to center offset during the lifting process; during the disassembly process, multiple support points formed by multiple telescopic devices are unloaded synchronously and evenly, reducing the risk of structural damage caused by stress mutation at the support points during the unloading process, and avoiding the deformation, fracture or even collapse of the grid due to uneven force. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0020] Figure 2 is a schematic diagram of the structure of the lattice support frame of an embodiment of the present invention;

[0021] Figure 3Schematic diagram of the connection structure of the column, sleeve and closure in the embodiment of the present invention;

[0022] Figure 4 Schematic diagram of the connection structure of the column, sleeve and telescopic device in the embodiment of the present invention;

[0023] Figure 5 Schematic diagram of the installation of the fixed kit and the movable kit in the embodiment of the present invention;

[0024] Figure 6 Schematic diagram of the connection structure of the base and the telescopic device in the embodiment of the present invention;

[0025] In the above-mentioned drawings: 100, base; 200, telescopic device; 300, lattice support frame; 310, vertical pole; 311, first connecting plate; 312, second connecting plate; 313, third connecting plate; 320, horizontal bar; 330, diagonal bar; 340, fixed kit; 341, first convex block; 3411, first connecting screw hole; 350, movable kit; 351, second convex block; 3511, second connecting screw hole; 360, closure; 361, third connecting screw hole; 362, connecting bolt. Detailed implementation manners

[0026] The technical solutions in the present invention will be further described below with reference to the drawings and embodiments.

[0027] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0028] Refer to Figures 1 to 6 , this embodiment provides a grid lattice support frame balanced jacking and unloading device, which includes at least four telescopic devices 200 fixedly installed on the ground and several lattice support frames 300, and the top side and the bottom side of the lattice support frame 300 are detachably connected;

[0029] The lattice support frame 300 includes four vertical rods 310 detachably connected together. The connected vertical rods 310 form a three-dimensional support structure. A sleeve is installed on each vertical rod 310. A closure 360 for closing the top side of the sleeve is detachably connected to the top side of the sleeve. The sleeve includes a fixed sleeve 340 fixedly connected to the vertical rod 310 and a movable sleeve 350 detachably connected to the fixed sleeve 340. When the movable sleeve 350 is connected to the fixed sleeve 340, the telescopic device 200 is sleeved therein, and when separated, it is separated from the telescopic device 200.

[0030] In this embodiment, when jacking up the lattice support frame 300, the telescopic device 200 is fixedly installed on the ground at the construction site, and then the lattice support frame 300 is assembled. The four vertical rods 310 are connected together to form a three-dimensional support structure; and the fixed sleeve 340 on the vertical rod 310 is connected to the movable sleeve 350, so that the telescopic device 200 is placed inside the sleeve; control the telescopic ends of all the telescopic devices 200 to remain in the retracted state, and then connect the closure 360 to the top side of the sleeve; then control the telescopic ends of all the telescopic devices 200 to extend. The telescopic ends jack up the closure 360, jack up the sleeve connected to the closure 360, and jack up the vertical rod 310 connected to the sleeve, so as to perform a jacking operation on the entire lattice support frame 300. When jacked up to a certain height, the next lattice support frame 300 (excluding the closure 360) is assembled under the jacked-up lattice support frame 300 according to the above steps, and the jacked-up lattice support frame 300 is connected to the lattice support frame 300 below. Then control the telescopic ends of the telescopic devices 200 to retract. At this time, the two connected lattice support frames 300 are placed on the ground, and the telescopic ends of the telescopic devices 200 are retracted and stored in the sleeves of the lattice support frame 300 close to the ground. Then the closure 360 of the lattice support frame 300 close to the ground is assembled with the sleeve, and after the assembly is completed, the jacking of the next lattice support frame 300 can be carried out; repeating the above operations can continuously jack up a number of lattice support frames 300 until the combined lattice support frames 300 can support the grid to be constructed. The four telescopic devices 200 jack up the same lattice support frame 300 at the same time, with multi-point support and balanced jacking, avoiding the collapse of the lattice support frame 300 due to central offset during the jacking process. And after the installation is completed, the lowermost lattice support frame 300 is placed on the ground, and the fixedly installed telescopic device 200 is sleeved in the sleeve of the lattice support frame 300, which can play a limiting role.

[0031] When unloading the lattice support frame 300, remove the closure 360 on the lowermost lattice support frame 300, control the telescopic end of the telescopic device 200 to extend into the sleeve of the upper lattice support frame 300 where the closure 360 is connected, and then disassemble the lowermost lattice support frame 300; after completion of the disassembly, control the telescopic end of the telescopic device 200 to retract until the lowermost lattice support frame 300 is placed on the ground at this time; repeat the above operations, and the lattice support frames 300 can be disassembled successively from bottom to top; and during the disassembly process, multiple support points formed by multiple telescopic devices 200 unload synchronously and evenly, reducing the risk of structural damage caused by stress mutation at the support points during the unloading process, and avoiding the situation that the grid deforms, breaks or even collapses due to uneven stress.

[0032] Preferably, the lattice support frame 300 further includes a horizontal rod 320 detachably connected to the vertical rod 310. Four vertical rods 310 are distributed in a rectangle, and at least two horizontal rods 320 are arranged between two adjacent vertical rods 310. One horizontal rod 320 is fixedly connected to the tops of the two vertical rods 310, and the other horizontal rod 320 is fixedly connected to the bottoms of the two vertical rods 310; the lattice support frame 300 further includes a diagonal rod 330, and the two ends of the diagonal rod 330 are respectively detachably connected to two adjacent vertical rods 310.

[0033] Among them, as Figures 1 to 4 shown, the lattice support frame 300 is a three-dimensional rectangular frame structure. The vertical rods 310 play a supporting role, and the horizontal rods 320 and the diagonal rods 330 strengthen the connection between the vertical rods 310, making the whole lattice support frame 300 more firm and reliable; specifically, both the top end and the bottom end of the vertical rod 310 are fixedly connected with a first connecting plate 311. The first connecting plate 311 at the top end of the vertical rod 310 can be connected and disassembled with the connecting plate at the bottom end of another vertical rod 310; the first connecting rods can be connected together by bolts in the prior art; specifically, a second connecting plate 312 detachably connected to the horizontal rod 320 and a third connecting plate 313 connected to both the horizontal rod 320 and the diagonal rod 330 are also fixedly connected to the side wall of the vertical rod 310. The horizontal rod 320, the second connecting plate 312, the diagonal rod 330 and the third connecting plate 313 can also be stably connected together by bolts in the prior art and are also convenient to disassemble.

[0034] Preferably, the fixing kit 340 includes an arc-shaped groove, the movable kit 350 is an arc-shaped plate, and the telescopic device 200 is a cylindrical hydraulic rod.

[0035] Among them, as Figures 1 to 6As shown, the telescopic device 200 directly uses a hydraulic rod in the prior art for jacking and disassembly. Of course, other telescopic devices in the prior art can also be used. When the arc-shaped groove on the fixed kit 340 closes with the arc-shaped plate-like movable kit 350, it adapts to and cooperates with the cylindrical hydraulic rod. Specifically, a number of first bumps 341 are provided on both sides of the arc-shaped groove on the fixed kit 340, and a number of second bumps 351 are provided on the sides of the two free ends of the arc-shaped plate. The first bumps 341 and the second bumps 351 are arranged in an alternating manner. A first connection screw hole 3411 is opened on the first bump 341, and a second connection screw hole 3511 is opened on the second bump 351. When the arc-shaped plate closes with the fixed kit 340, the first connection screw hole 3411 is aligned with the second connection screw hole 3511 for a long screw to pass through. By passing the long screw in the prior art through a number of pairs of the first bumps 341 and the second bumps 351 in turn, the movable kit 350 is fixedly connected to the fixed kit 340 to form a cylindrical space sleeved outside the hydraulic rod. During use, only two long screws are needed to connect the fixed kit 340 and the movable kit 350 together, which is convenient for installation and disassembly.

[0036] Preferably, the closure 360 is detachably connected to the top sides of the fixed kit 340 and the movable kit 350 through a bolt structure.

[0037] Among them, as Figures 1 to 4 , the closure 360 is disc-shaped. Third connection screw holes 361 are opened on the top sides of the fixed kit 340 and the movable kit 350, and screw holes corresponding to the third connection screw holes 361 are opened on the closure 360. By screwing the connection bolts 362 into the screw holes on the closure 360 and the third screw holes, the closure 360 is fixedly connected to the fixed kit 340 and the movable kit 350 together. The disc-shaped closure 360 closes the top side of the sleeve, enabling the telescopic device 200 inside the sleeve to drive the sleeve to rise and fall, and further driving the entire lattice support frame 300 to rise and fall.

[0038] Preferably, the telescopic device 200 is fixedly connected to the base 100 fixedly connected to the ground.

[0039] Among them, as Figure 1 and Figure 6 shown, the multi-dry telescopic device 200 is installed and positioned through the base 100. The telescopic device 200 can be embedded, welded or fixed to the base 100 by other fixing methods in the prior art. Specifically, the base 100 is an I-shaped steel section, and the I-shaped steel section can be fixed to the ground by chemical bolts in the prior art.

[0040] Compared with the prior art, when the lattice support frame is jacked up in the present invention, four telescopic devices jack up the same lattice support frame simultaneously, with multi-point support and balanced jacking, avoiding the collapse of the lattice support frame due to central offset during the jacking process; during the disassembly process, multiple support points formed by multiple telescopic devices are unloaded synchronously and evenly, reducing the risk of structural damage caused by stress mutation at the support points during the unloading process, and avoiding the deformation, fracture or even collapse of the grid due to uneven force.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. Grid lattice support balanced jacking and unloading device, characterized in that It includes at least four telescopic devices fixedly installed on the ground and several lattice supports, and the top side and the bottom side of the lattice support are detachably connected; The lattice support includes four vertical rods detachably connected together. The connected vertical rods form a three-dimensional support structure. A sleeve is installed on each vertical rod. A closure for closing the top side of the sleeve is detachably connected to the top side of the sleeve. The sleeve includes a fixed kit fixedly connected to the vertical rod and a movable kit detachably connected to the fixed kit. When the movable kit is connected to the fixed kit, the telescopic device is sleeved therein, and when separated, it is separated from the telescopic device; The fixed kit includes an arc-shaped groove, the movable kit is an arc-shaped plate, and the telescopic device is a cylindrical hydraulic rod; On both sides of the arc-shaped groove on the fixed kit, several first protrusions are provided. On the side surfaces of the two free ends of the arc-shaped plate, several second protrusions are provided. The first protrusions and the second protrusions are arranged alternately. A first connection screw hole is opened on the first protrusion, and a second connection screw hole is opened on the second protrusion. When the arc-shaped plate and the fixed kit are closed, the first connection screw hole and the second connection screw hole are aligned for a long screw to pass through together.

2. The grid lattice type support frame balanced jacking and unloading device according to claim 1, characterized in that The lattice support further includes a horizontal rod detachably connected to the vertical rod. The four vertical rods are distributed in a rectangle, and at least two horizontal rods are provided between two adjacent vertical rods. One of the horizontal rods is fixedly connected to the tops of the two vertical rods, and the other horizontal rod is fixedly connected to the bottoms of the two vertical rods.

3. The grid lattice type support frame equalized lifting and unloading device according to claim 2, characterized in that, The lattice support further includes a diagonal rod, and the two ends of the diagonal rod are respectively detachably connected to two adjacent vertical rods.

4. The grid lattice type support frame balanced jacking and unloading device according to claim 3, characterized in that, First connecting plates are fixedly connected to the top and bottom ends of the vertical rod.

5. The grid lattice type support frame equalized lifting and unloading device according to claim 4, characterized in that, On the side wall of the vertical rod, a second connecting plate detachably connected to the horizontal rod and a third connecting plate simultaneously connected to the horizontal rod and the diagonal rod are also fixedly connected.

6. The grid lattice support frame equalized jacking and unloading device according to claim 1, characterized in that, The closure is detachably connected to the top sides of the fixed kit and the movable kit through a bolt structure.

7. The grid lattice type support frame balanced jacking and unloading device according to claim 1, characterized in that, The telescopic device is fixedly connected to a base fixedly connected to the ground.

8. The grid lattice type support frame equalized jacking and unloading device according to claim 7, characterized in that, The base is an I-shaped steel.

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