Modular steel grid jacking device and method of use thereof

Abstract

The application discloses a modular steel net rack jacking device and a use method thereof, and relates to the technical field of steel net rack jacking devices. The modular steel net rack jacking device comprises a supporting device, a hydraulic device, a standard sleeve, a laser device and a lead device. Supporting clamps at the top of the supporting device are connected with a first standard plate, a second standard plate and a third standard plate through a first connecting rod, are arranged at the bottom of a jacking ball node to be jacked, and form an upper structure of the device. Third connecting rods, second standard plates and third standard plates in the standard sleeve are correspondingly arranged below the first standard plate, the second standard plate and the third standard plate in the supporting device to form a middle structure of the device. A jacking platform is arranged at the upper portion of the hydraulic device, and a steel foundation is arranged at the lower portion of the hydraulic device. The laser device is fixed to the jacking platform and the supporting clamps. The lead device is arranged in the steel foundation. The jacking device can be adjusted freely to adapt to the working space of different steel net rack projects, is fast to install on site, and is simple to operate.

Description

Technical Field

[0001] This invention relates to the field of steel space frame lifting technology, and in particular to a modular steel space frame lifting device and its usage method. Background Technology

[0002] A steel space frame structure is a highly statically indeterminate spatial structure composed of numerous members arranged regularly from two or more directions. Due to the mutual support between the members, it alters the force-bearing system of a planar truss, enabling it to withstand loads from all directions. It exhibits high stiffness, good integrity, and strong seismic resistance. The basic units constituting a steel space frame include triangular pyramids, triangular prisms, cubes, and truncated square pyramids. These basic units can be combined to form different space frame forms such as planar truss systems, tetrahedral pyramid systems, and triangular pyramid systems. Steel space frames have a wide range of applications, including roofs for buildings such as stadiums, theaters, waiting halls, and stadium grandstand canopies.

[0003] There are several methods for installing steel space frame structures, including high-altitude assembly, hoisting, and jacking. The jacking method is particularly effective due to its low cost, minimal impact from site conditions, and ease of operation. This method requires a jacking device, but traditional jacking systems typically involve hydraulically lifting a standard section to its height, followed by manual installation of multiple extension sections. These extension sections have poor overall integrity, and the assembly and disassembly process is repetitive, complex, and inefficient. Furthermore, the jacking device cannot visually demonstrate the actual verticality changes or the actual lifting height during operation. Current practice involves manual measurement with a plumb bob and measuring tape after each hydraulic cylinder stroke, which is time-consuming, prone to errors, and cannot guarantee the safety of the jacking operation.

[0004] In summary, how to effectively solve the technical problems of low disassembly and assembly efficiency of current steel grid lifting devices, poor integrity of standard sections, and inability to obtain actual verticality and lifting height in real time are urgent issues that need to be addressed by those skilled in the art. Summary of the Invention

[0005] Objective: To enable the rapid installation of a steel space frame lifting device on construction sites, requiring the device to adapt to steel space frame structures of different spatial dimensions, possess good overall integrity, and display its actual verticality and lifting height data in real time. To this end, a modular steel space frame lifting device and its usage method are proposed to achieve safer and more efficient steel space frame lifting operations.

[0006] Technical solution: To achieve the above objectives, the technical solution adopted by this invention is as follows:

[0007] A modular steel space frame lifting device includes a support device, a hydraulic device, a standard sleeve, a laser device, and a guide wire device. The support clamp at the top of the support device is connected to a first standard plate, a second standard plate, and a third standard plate via a first connecting rod, and is located at the bottom of the node to be lifted, forming the upper structure of the device. The third connecting rod, the second standard plate, and the third standard plate in the standard sleeve are respectively located below the first standard plate, the second standard plate, and the third standard plate in the support device, forming the middle structure of the device. A lifting platform is installed on the upper part of the hydraulic device, and a steel foundation is installed on the lower part. The laser device is fixed on the lifting platform and the support clamp, and the guide wire device is located inside the steel foundation.

[0008] The support device includes a support clip, a first connecting rod, a first standard plate, a second standard plate, a third standard plate, and connecting limbs; the support clip has a first connecting groove with a rotating shaft on all four sides, and one end of each of the four first connecting rods has a hole that passes through the first connecting groove and is rotatably connected to the support clip, and the other end is welded to a first standard plate, two second standard plates, and a third standard plate, respectively.

[0009] The support bracket includes a support claw, a support column, and a support box. The support claw is a claw-shaped structure with four limbs arranged in quarter-circle arcs at opposite corners, welded to the top of the support column. The support column includes a first connecting column, a spring, a second connecting column, and a first sliding rail. The four first connecting columns are symmetrically arranged around the curved surface of the support column via springs at their tails. The two second connecting columns are symmetrically arranged on both sides of the curved surface of the first connecting column via springs at their tails. The width of the first sliding rail is the same as the cross-sectional diameter of the second connecting column, and it is located inside the connection hole between the support column and the first connecting column.

[0010] The support box is a cubic box with a circular groove excavated on the top. Four L-shaped second sliding rails are symmetrically opened inside the circular groove. The ends of the second sliding rails are opened with circular first positioning holes. The diameter of the first positioning holes is the same as the cross-sectional diameter of the first connecting column.

[0011] The first standard plate has positioning blocks on both sides, and second connecting grooves on both sides of the lower end. The positioning blocks have second positioning holes symmetrically opened on the upper and lower surfaces. The second standard plate has positioning blocks on both sides, and third positioning holes on both sides of the upper and lower ends. A lifting joint with end slots is welded to the inner side. A first positioning groove is opened longitudinally at the bottom, and a first positioning strip is opened longitudinally at the top. The third standard plate has positioning blocks on both sides, and third positioning holes on both sides of the upper and lower ends. A lifting joint with end slots is welded to the inner side. A second positioning groove is opened longitudinally at the bottom, and a second positioning strip is opened transversely at the top. The connecting limb is an L-shaped kit with holes on the upper and lower sides that have the same diameter and position as the second positioning holes.

[0012] The hydraulic device includes a lifting platform, a hydraulic cylinder, a second connecting rod, and a steel foundation. The lifting platform is located at the upper end of the hydraulic cylinder and is a T-shaped steel component with lifting slots on three sides. The second connecting rod is fixed in the lifting slots by a pin and a cotter pin. The steel foundation is located at the lower end of the hydraulic cylinder and is a rectangular steel component.

[0013] The standard set includes a second standard plate, a third standard plate, a connecting leg, a first connecting block, and a third connecting rod; the second standard plate has a lead wire hole in the middle of its lower end, the first connecting block is correspondingly arranged below the first standard plate, and its lower end has a second connecting groove and a third connecting groove, the third connecting rod is fixedly installed through the second connecting groove and the third connecting groove, and each of the third connecting rods has a connecting hole in the middle.

[0014] The laser device includes a laser transmitter and a laser receiver; the laser transmitter is disposed on the lower end face of the support box, and the laser receiver includes a microprocessor and a laser receiver, the laser receiver being disposed on the upper end face of the microprocessor, and the microprocessor being disposed on the upper end face of the lifting platform.

[0015] The lead wire device includes a second connecting block, a lifting rod, a steel wire rope, and a motor. The lead wire device is installed inside the steel foundation, below the first positioning groove. The second connecting block is positioned above the lifting rod, and its width and height are the same as the width and height of the first positioning groove. The second connecting block has a hole with the same size as the lead wire hole. One end of the lifting rod has a hole for the steel wire rope to pass through. The surface of the steel wire rope is marked with distance scales. The motor is located outside the rope shaft of the steel wire rope.

[0016] A method for using a modular steel space frame lifting device includes the following steps:

[0017] S1: Based on the size of the space frame structure on site, select the combination hole positions of the connecting limbs and positioning blocks and fix them with bolts. The dimensions of the support device and standard sleeve adjusted accordingly shall be used as the standard dimensions for the jacking operation.

[0018] S2: Connect the support device and the lifting platform through the second connecting rod, place the combined device below the ball node to be lifted on the steel grid, turn on the laser emitter, record the initial position of the laser through the laser receiver, pass the pin through the lead hole and the second connecting block and fix it with the cotter pin, and turn on the motor;

[0019] S3: Drive the hydraulic cylinder to lift, so that the support device drives the second connecting block and the wire rope to move upward, lifting the steel grid frame. After one lifting is completed, there is a space of standard sleeve height between the support device and the steel foundation.

[0020] S4: Pull out the cotter pin, remove the pin shaft, return the second connecting block to the inside of the steel foundation, take a set of first standard plates, second standard plates and third standard plates that are adjusted to the working standard size as in S1 and fixed with connecting limbs, push them from back to front and place them on the steel foundation, and connect the standard sleeve to the support device through the third connecting rod and positioning plate.

[0021] S5: Drive the hydraulic device to return oil, the hydraulic cylinder retracts, connect the standard sleeve and the lifting platform through the second connecting rod, pass the pin through the lead hole and the second connecting block and fix it with the cotter pin, turn on the motor, and drive the hydraulic cylinder to lift. Repeat this cycle to lift the steel grid frame.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] Compared with the original technology, the present invention allows for free adjustment of the space enclosed by the first, second, and third standard plates to adapt to the actual space dimensions of the steel grid frame on site, improving the practicality of the lifting components; all components are modular, allowing for quick on-site assembly and disassembly, simplifying worker operations and improving work efficiency; the standard sleeve has good overall integrity, improving the safety and stability of the lifting components; a laser device and a guide wire device with a distance scale steel wire rope are provided, enabling real-time calculation of the actual verticality and actual lifting height of the device during the lifting operation; a guide wire device with a motor, steel wire rope, and second connecting block is provided, which can pull on both sides of the standard sleeve while the motor is releasing the wire at a uniform speed, improving the stability of the lifted structure and preventing tilting or even overturning. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall device of the modular steel space frame lifting device of the present invention;

[0025] Figure 2 This is a schematic diagram of the support device structure of the modular steel grid lifting device of the present invention;

[0026] Figure 3 This is an exploded view of the support device for the modular steel space frame lifting device of the present invention;

[0027] Figure 4 This is a schematic diagram of the hydraulic device structure of the modular steel grid lifting device of the present invention;

[0028] Figure 5 This is a schematic diagram of the standard set structure of the modular steel space frame lifting device of the present invention;

[0029] Figure 6 This is a standard bottom view of the modular steel space frame lifting device of the present invention;

[0030] Figure 7 This is a schematic diagram of the lead wire device structure of the modular steel grid lifting device of the present invention;

[0031] Figure 8 This is a schematic diagram of the installation position of the laser device in the modular steel grid lifting device of the present invention, wherein (a) is a front view and (b) is a left view;

[0032] Figure 9 This is an enlarged schematic diagram of part A of the present invention;

[0033] Figure 10 This is an enlarged schematic diagram of part B of the present invention;

[0034] In the diagram: 1 is the support device; 2 is the hydraulic device; 3 is the standard sleeve; 4 is the laser device; 6 is the bolt; 7 is the positioning plate; 8 is the cotter pin; 9 is the pin shaft; 11 is the support clamp; 12 is the first connecting rod; 13 is the first standard plate; 14 is the second standard plate; 15 is the third standard plate; 16 is the connecting limb; 21 is the lifting platform; 22 is the hydraulic cylinder; 23 is the second connecting rod; 24 is the steel foundation; 31 is the first connecting block; 32 is the third connecting rod; 41 is the laser transmitter; 42 is the laser receiver; 51 is the second connecting block; 52 is the lifting rod; 53 is the wire rope; 54 is the motor; 111 is the support claw; 112 is the support column; 113 is... The support box includes: 131 as a positioning block, 132 as a second connecting groove, 141 as a lifting connector, 142 as a third positioning hole, 143 as a first positioning groove, 144 as a first positioning strip, 145 as a lead wire hole, 151 as a second positioning groove, 152 as a second positioning strip, 211 as a lifting groove, 311 as a third connecting groove, 321 as a connecting hole, 421 as a microprocessor, 422 as a laser receiver, 1121 as a first connecting post, 1122 as a spring, 1123 as a second connecting post, 1124 as a first sliding rail, 1131 as a second sliding rail, 1132 as a first positioning hole, 1133 as a first connecting groove, and 1311 as a second positioning hole. Detailed Implementation

[0035] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the invention. After reading this invention, any modifications of the invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0036] A modular steel space frame lifting device, such as Figures 1-2 , Figure 4 and Figure 8As shown, the device includes a support device 1, a hydraulic device 2, a standard sleeve 3, a laser device 4, and a lead wire device. The support clamp 11 at the top of the support device 1 is connected to a first standard plate 13, two second standard plates 14, and a third standard plate 15 via a first connecting rod 12 with a connecting hole at one end. The first standard plate 13, second standard plate 14, and third standard plate 15 are connected by connecting limbs 16 and bolts 6 to form the upper structure of the device. The two third connecting rods 32, the two second standard plates 14, and the third standard plate 15 in the standard sleeve 3 are respectively positioned below the first standard plate 13, second standard plate 14, and third standard plate 15 in the support device 1, and are connected by connecting limbs 16 and third connecting rods 32 to form the middle structure of the device. The standard sleeve 3 is connected to the support device 1 by bolts 6 and a positioning plate 7. A lifting platform 21 is installed on the upper part of the hydraulic device 2, and a steel foundation 24 is installed on the lower part. The laser device 4 is fixed to the lifting platform 21 and the support clamp 11. The lead wire device is installed inside the left and right sides of the steel foundation 24 structure.

[0037] like Figures 2-3 , Figure 10 As shown, the support device 1 includes a support clamp 11, a first connecting rod 12, a first standard plate 13, a second standard plate 14, a third standard plate 15, and a connecting limb 16. The support clamp 11 includes a support claw 111, a support column 112, and a support box 113. The support box 111 is a steel component with four symmetrically distributed quarter-circular claws at the top and an octagonal column at the bottom, the bottom surface of which is welded to the top surface of the support column 112. The support column 112 includes four first connecting columns 1121, symmetrically distributed around the curved surface of the support column 112. A slot is formed inside the support column 112 at the location of the first connecting columns 1121, and two first sliding rails 1124 are formed on both sides of the slot. Two second connecting columns 1123 are symmetrically distributed on both sides of the curved surface of the first connecting columns 1121, and the width of the first sliding rails 1124 is the same as the cross-sectional diameter of the second connecting columns 1123. Both the first connecting column 1121 and the second connecting column 1123 are equipped with springs 1122 at their rear ends, which can retract when the connecting column is subjected to axial force, allowing the two types of connecting columns to move inward. The support box 113 is an iron box with a circular groove at the top, the diameter of which is the same as the cross-sectional diameter of the support column 112. It includes a second sliding rail 1131, a first positioning hole 1132, and a first connecting groove 1133. The second sliding rail 1131 is located inside the groove at the top of the support box 113 and is an L-shaped rail with a width the same as the cross-sectional diameter of the first connecting column 1121. Each end of the second sliding rail 1131 is provided with a first positioning hole 1132, the diameter of which is the same as the cross-sectional diameter of the first connecting column 1121.

[0038] like Figure 2As shown, the welded support claw 111 and support column 112 are positioned so that the first connecting column 1121 and the second sliding rail 1121 correspond. The support claw 111 and support column 112 are vertically placed into the upper circular groove of the support box 113. Due to the presence of a spring 1122, the first connecting column 1121 will retract into the support column 112. Rotating the support column 112 clockwise until the first positioning hole 1132 at the end of the second sliding rail 1131 is rotated, the first connecting column 1121 will extend and engage with the first positioning hole 1132, thus connecting the support column 112 to the support box 113.

[0039] like Figures 2-3 As shown, the support box 113 has four first connecting grooves 1133 with rotating shafts distributed around it. The first connecting rod 12 is a steel bar with a connecting hole at one end. The four first connecting rods 12 with connecting holes at one end are rotatably connected to the support box 113 through the four first connecting grooves 1133, and the other end is welded to the first standard plate 13, the second standard plate 14 and the third standard plate 15 respectively.

[0040] like Figures 1-3 , Figures 5-6 As shown, two positioning blocks 131 are provided on both sides of the first standard plate 13, the second standard plate 14, and the third standard plate 15. The positioning blocks 131 have five second positioning holes 1311 along their length. The first standard plate 13 has two second connecting grooves 132 on the lower left and right sides. The second standard plate 14 has four third positioning holes (142) on the upper and lower left and right sides, and a lifting joint 141 with an end groove welded to its inner side. The bottom has a first positioning groove 143 along the longitudinal direction, and the top has a first positioning strip 144 along the longitudinal direction. The third standard plate 15 has four third positioning holes 142 on the upper and lower left and right sides. The connection between the standard sleeve 3 and the support device 1, and between standard sleeves 3 themselves, is achieved through a positioning plate 7 and two bolts 6. The inner side has a lifting joint 141 with an end groove welded to its inner side, a second positioning groove 151 along the longitudinal direction at the bottom, and a second positioning strip 152 along the transverse direction at the top. The length of the first positioning groove 143 is less than the length of the second standard plate 14, and the length of the second positioning groove 151 is less than the width of the third standard plate 15. Both types of positioning strips will stop when they reach the end of the positioning groove. The connecting limb 16 is an L-shaped assembly with holes on its upper and lower sides that have the same diameter and position as the second positioning hole 1311. By selecting different positions of the second positioning hole, the connection distance between the standard plates can be adjusted, thereby adjusting the spatial dimensions of the lifting device.

[0041] like Figure 1 , Figures 5-6As shown, the standard sleeve 3 includes a second standard plate 14, a third standard plate 15, a connecting limb 16, a first connecting block 31, and a third connecting rod 32. A lead wire hole 145 is opened in the middle of the lower end of the second standard plate 14, through which a pin 9 can be used to fix the second connecting block 52 to the second standard plate 14. Two first connecting blocks 31 are symmetrically arranged below the first standard plate 13, each with a second connecting groove 132 and a third connecting groove 311 at its lower end. Five second positioning holes 1311 are opened along the length of the end of each first connecting block 31 for connecting to the second standard plate 14 via the connecting limb 16. The third connecting rod 32 is fixedly installed through the second connecting groove 132 and the third connecting groove 311, realizing the connection between the standard sleeve 3 and the support device 1, and between standard sleeves 3 and other standard sleeves 3. Each of the third connecting rods 32 has a connecting hole 321 in the middle, through which bolts 6 are passed to reinforce the components.

[0042] like Figures 4-5 As shown, the hydraulic device 2 includes a lifting platform 21, a hydraulic cylinder 22, a second connecting rod 23, and a steel foundation 24. The lifting platform 21, located above the hydraulic cylinder 22, is a T-shaped steel component with lifting slots 211 on three sides. The second connecting rod 23 is fixed in the lifting slots 211 by pins 9 and cotter pins 8, and also fixed in the slot of the lifting joint 141 by pins 9 and cotter pins 8. When the hydraulic cylinder 22 is activated, the standard plate connected to the lifting platform 21 is lifted upwards, thereby raising the space frame. The steel foundation 24, located below the hydraulic cylinder 22, is a rectangular steel component.

[0043] like Figure 1 , Figure 10 As shown, the laser device 4 includes a laser emitter 41 and a laser receiver 42. The laser emitter 41 is disposed on the lower end face of the support box 113. The laser receiver 42 includes a microprocessor 421 and a laser receiver 422. The laser receiver 422 is disposed on the upper end face of the microprocessor 421, which is disposed on the upper end face of the lifting platform 21. When the lifting operation begins for the first time, the laser emitter 41 is turned on. The microprocessor 421 confirms and records the initial laser position displayed on the laser receiver 422. Subsequently, if the verticality of the lifting device changes, the laser position on the laser receiver 422 will change to a certain quadrant. This change is recognized and data is sent by the microprocessor 422.

[0044] like Figure 7 , Figure 9As shown, the lead wire device includes a second connecting block 51, a lifting rod 52, a steel wire rope 53, and a motor 54. The lead wire device is located inside the left and right sides of the steel foundation 24 structure, below the first positioning groove 143. The second connecting block 51 is positioned above the lifting rod 52, with only contact between them. Its width and height are the same as the width and height of the first positioning groove 143. The second connecting block 51 has a hole of the same size as the lead wire hole 145, allowing the second standard plate 14 and the second connecting block 51 to be fixed by a pin 9 passing through the lead wire hole 145 and the second connecting block 51. One end of the lifting rod 52 has a hole for the steel wire rope 53 to pass through, and the other end has a ring for a finger to insert and pull. The surface of the steel wire rope 53 is marked with distance scales. During the lifting process, the actual lifting height data can be obtained by directly reading the distance scales on the surface of the steel wire rope 53. The motor 54 is located outside the rope shaft of the wire rope 53. It starts synchronously when lifting begins. The speed at which the motor 54 releases the wire is slightly slower than the working speed of the hydraulic cylinder 22, ensuring that the wire rope 53 remains taut throughout the lifting process. The symmetrically arranged guide wire devices can exert corresponding pulling forces on the two symmetrical second standard plates 14, improving the stability of the upper mechanism. After one lifting operation is completed, the motor 54 is used to reel in the wire rope 53. The retraction of the wire rope 53 causes the second connecting block 51 to return to the interior of the steel foundation 24.

[0045] A method for using a modular steel space frame lifting device includes the following steps:

[0046] S1: Based on the size of the space frame structure on site, select the combination hole position of the connecting leg 16 and the positioning block 131 and fix it with bolt 6. The dimensions of the support device 1 and the standard sleeve 3 adjusted accordingly shall be used as the standard dimensions for the jacking operation.

[0047] S2: Connect the support device 1 and the lifting platform 21 through the second connecting rod 23, place the combined device below the ball node to be lifted on the steel grid frame, turn on the laser emitter 41, record the initial position of the laser through the laser receiver 422, pass the pin 9 through the lead hole 145 and the second connecting block 51 and fix it with the cotter pin 8, and turn on the motor 54.

[0048] S3: Drive the hydraulic cylinder 22 to lift, so that the support device 1 drives the second connecting block 51 and the wire rope 53 to move upward, lifting the steel grid frame. After one lifting is completed, there is a space of standard sleeve height between the support device 1 and the steel foundation 24.

[0049] S4: Pull out the cotter pin 8, remove the pin shaft 9, return the second connecting block 51 to the inside of the steel base 24, take a set of first standard plate 13, second standard plate 14 and third standard plate 15 that are adjusted to the working standard size as in S1 and fixed with connecting limb 16, push them from back to front and place them on the steel base 24, and connect the standard sleeve 3 to the support device 1 through the third connecting rod 32 and the positioning plate 7.

[0050] S5: Drive the hydraulic device 2 to return oil, the hydraulic cylinder 22 retracts, connect the standard sleeve 3 and the lifting platform 21 through the second connecting rod 23, pass the pin 9 through the lead hole 145 and the second connecting block 51 and fix it with the cotter pin 8, turn on the motor 54, and drive the hydraulic cylinder 22 to lift. Repeat this cycle to lift the steel grid frame.

[0051] Working principle: Before the jacking operation, based on the size of the space frame assembled on the ground, pull the first standard plate 13, the second standard plate 14, and the third standard plate 15 to the appropriate positions. Select the second positioning hole 1311 corresponding to this position, and use bolts 6 to fix the positioning block 131 between the three types of standard plates and the connecting leg 16 according to the hole position. At this time, since one end of the first connecting rod 12 is welded and the other end is rotatably connected, the position of the support box 113 is also determined. Place the support column 112 into the support box 113 and rotate the support column 112 clockwise until the first connecting column 1121 pops out from the first positioning hole 1132. Assemble the support device 1. Similarly, use bolts 6 to fix the positioning block 131 between the second standard plate 14 and the third standard plate 15 according to the hole positions. Fix the positioning block 131 to the connecting leg 16 to complete the preliminary assembly of the standard sleeve 3 of the standard size for this lifting operation. Take four second connecting rods 23 and connect and fix the lifting platform 21 to the lifting joint 141 through cotter pins 8 and pins 9. Turn on the laser emitter 41 installed at the bottom of the support box 113. The microprocessor 422 confirms and records the initial laser position displayed on the laser receiver 422. Connect the second connecting block 52 to the second standard plate 15 through cotter pins 8 and pins 9. The standard plate 14 is connected and fixed. The motor 54 is started, and the hydraulic cylinder 22 is started simultaneously. The support device 1 is lifted upward by the height of the first standard plate 13. When the lifting process is completed, the scale on the surface of the wire rope 53 is observed and recorded. The second connecting block 52 is removed and retracted into the steel base 24. The standard sleeve 3 is pushed in from back to front. At this time, the first positioning strip 144 above the second standard plate 14 on the left and right sides of the standard sleeve 3, and the second positioning strip 152 above the third standard plate 15 on the rear side are respectively aligned with the first positioning groove 143 below the second standard plate 14 on the left and right sides of the lifted support device 1, and the third standard plate on the rear side. The second positioning groove 151 below 15 contacts and is limited when pushed to the end of the groove, realizing the installation of a standard sleeve 3. The positioning plate 7 and bolt 6 are used to connect the upper and lower second standard plates 14 and the two second standard plates 14. The third connecting rod 32 is used to connect the first standard plate 13 and the first connecting block 31. The lifting platform 21 is connected and fixed to the lifting joint 141 of the pushed standard sleeve 3 through the second connecting rod 23. The second connecting block 52 is connected and fixed to the second standard plate 14 of the pushed standard sleeve 3. The motor 54 and hydraulic cylinder 22 are started again to carry out the lifting work. This cycle is repeated to lift the steel grid frame.

[0052] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A modular steel grid jacking device, characterized in that: The modular steel net rack jacking device comprises a supporting device (1), a hydraulic device (2), a standard sleeve (3), a laser device (4) and a lead device, the supporting clamp (11) at the top of the supporting device (1) is connected with the first standard plate (13), the second standard plate (14) and the third standard plate (15) through the first connecting rod (12), is arranged at the bottom of the node to be jacked, and the upper structure of the device is formed; the third connecting rod (32), the second standard plate (14) and the third standard plate (15) in the standard sleeve (3) are correspondingly arranged below the first standard plate (13), the second standard plate (14) and the third standard plate (15) in the supporting device (1), and the middle structure of the device is formed; the upper part of the hydraulic device (2) is provided with a jacking platform (21), and the lower part is provided with a steel foundation (24); the laser device (4) is fixed on the jacking platform (21) and the supporting clamp (11); the lead device is arranged in the steel foundation (24); The first standard plate (13) is provided with positioning blocks (131) on the left and right sides, second connecting grooves (132) are formed on the left and right sides of the lower end, and second positioning holes (1311) are symmetrically formed on the upper and lower surfaces of the positioning blocks (131); the second standard plate (14) is provided with positioning blocks (131) on the left and right sides, third positioning holes (142) are formed on the left and right sides of the upper end and the lower end, jacking joints (141) with slotted ends are welded on the inner sides, a first positioning groove (143) is formed in the longitudinal direction at the bottom, and a first positioning strip (144) is formed in the longitudinal direction at the top; the third standard plate (15) is provided with positioning blocks (131) on the left and right sides, third positioning holes (142) are formed on the left and right sides of the upper end and the lower end, jacking joints (141) with slotted ends are welded on the inner sides, a second positioning groove (1513) is formed in the longitudinal direction at the bottom, and a second positioning strip (152) is formed in the transverse direction at the top; The standard sleeve (3) comprises a second standard plate (14), a third standard plate (15), a connecting limb (16), a first connecting block (31) and a third connecting rod (32); a lead hole (145) is formed in the middle of the lower end of the second standard plate (14), the first connecting block (31) is correspondingly arranged below the first standard plate (13), second connecting grooves (132) and third connecting grooves (311) are formed in the lower end of the first connecting block (31), the third connecting rod (32) is fixedly installed through the second connecting grooves (132) and the third connecting grooves (311), and connecting holes (321) are formed in the middle of the third connecting rod (32); The lead device includes a second connecting block (51), a lifting rod (52), a steel wire rope (53), and a motor (54); the lead device is installed inside the steel foundation (24), below the first positioning groove (143), the second connecting block (51) is placed above the lifting rod (52), the width and height of the second connecting block (51) are the same as the width and height of the first positioning groove (143), the second connecting block (51) is provided with a hole with the same size as the lead hole (145), one end of the lifting rod (52) is provided with a hole through which the steel wire rope (53) passes, the surface of the steel wire rope (53) is marked with a distance scale, and the motor (54) is arranged outside the rope shaft of the steel wire rope (53).

2. The modular steel grid jacking device of claim 1, wherein: The support device (1) includes a support clamp (11), a first connecting rod (12), a first standard plate (13), a second standard plate (14), a third standard plate (15), and a connecting limb (16); the support clamp (11) is provided with a first connecting groove (1133) with a rotating shaft on four sides, one end of the four first connecting rods (12) is provided with a hole, and the other end is respectively welded to a first standard plate (13), two second standard plates (14), and a third standard plate (15).

3. The modular steel grid jacking device of claim 2, wherein: The support clamp (11) includes a support claw (111), a support column (112), and a support box (113); the support claw is a claw-shaped structure with four limbs arranged at opposite angles in a 1 / 4 circular arc, and is welded directly above the support column (112); the support column (112) includes a first connecting column (1121), a spring (1122), a second connecting column (1123), and a first sliding rail (1124); the four first connecting columns (1121) are symmetrically arranged around the curved surface of the support column (112) through the springs (1122) arranged at the tail; the two second connecting columns (1123) are symmetrically arranged on both sides of the curved surface of the first connecting column (1121) through the springs (1122) arranged at the tail; the first sliding rail (1124) has the same width as the cross-sectional diameter of the second connecting column (1123), and is arranged inside the connecting hole of the support column (112) and the first connecting column (1121).

4. The modular steel grid jacking device of claim 3, wherein: The support box (113) is a cubic box with a circular groove excavated in the upper part, and four L-shaped second sliding rails (1131) are symmetrically arranged in the circular groove; the end of the second sliding rail (1131) is provided with a circular first positioning hole (1132); the diameter of the first positioning hole (1132) is consistent with the cross-sectional diameter of the first connecting column (1121).

5. The modular steel grid jacking device of claim 4, wherein: The connecting limb (16) is an L-shaped assembly provided with holes with the same diameter and position as the second positioning hole (1311) on the upper and lower sides.

6. The modular steel grid jacking device of claim 5, wherein: The hydraulic device (2) comprises a jacking platform (21), a hydraulic cylinder (22), a second connecting rod (23), and a steel base (24); the jacking platform (21) is arranged on the upper end of the hydraulic cylinder (22) and is a T-shaped steel member, three sides of which are provided with jacking grooves (211); the second connecting rod (23) is fixed in the jacking grooves (211) through a pin shaft (9) and a split pin (8); and the steel base (24) is arranged on the lower end of the hydraulic cylinder (22) and is a rectangular steel member.

7. The modular steel grid jacking device of claim 6, wherein: The laser device (4) comprises a laser emitter (41) and a laser receiver (42); the laser emitter (41) is arranged on the lower end face of the support box (113); the laser receiver (42) comprises a microprocessor (421) and a laser receiver (422), the laser receiver (422) is arranged on the upper end face of the microprocessor (421), and the microprocessor (421) is arranged on the upper end face of the jacking platform (21).

8. A method of using a modular steel grid jacking device, implemented based on the modular steel grid jacking device of claim 7, characterized in that, The method comprises the following steps: S1: according to the size of the space of the field space truss structure, the combined hole position of the connecting limb (16) and the positioning block (131) is selected and fixed by a bolt (6), and the size of the support device (1) and the standard sleeve (3) adjusted in this way is taken as the standard size for jacking operation; S2: the support device (1) and the jacking platform (21) are connected through the second connecting rod (23), the combined device is placed below the steel space truss node to be jacked, the laser emitter (41) is turned on, the initial position of the laser is recorded through the laser receiver (422), the pin shaft (9) is inserted through the lead hole (145) and the second connecting block (51) and fixed by the split pin (8), and the motor (54) is turned on; S3: the hydraulic cylinder (22) is driven to jack up, so that the support device (1) drives the second connecting block (51) and the steel wire rope (53) to move upwards, the steel space truss is jacked up, and after one jacking is completed, a space with the height of a standard sleeve (3) exists between the support device (1) and the steel base (24); S4: the split pin (8) is pulled out, the pin shaft (9) is removed, the second connecting block (51) is returned to the inside of the steel base (24), a group of first standard plates (13), second standard plates (14), and third standard plates (15) adjusted to the standard size for operation by the connecting limb (16) are taken, and the first standard plates (13), the second standard plates (14), and the third standard plates (15) are pushed from back to front and placed on the steel base (24), and the standard sleeve (3) and the support device (1) are connected through the third connecting rod (32) and the positioning plate (7); S5: the hydraulic device (2) is driven to return oil, the hydraulic cylinder (22) is retracted, the standard sleeve (3) and the jacking platform (21) are connected through the second connecting rod (23), the pin shaft (9) is inserted through the lead hole (145) and the second connecting block (51) and fixed by the split pin (8), the motor (54) is turned on, the hydraulic cylinder (22) is driven to jack up again, and the steel space truss is jacked up in this way.

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