Splicing and jacking device for net rack

Abstract

The invention relates to the technical field of steel net rack assembly, and particularly discloses a net rack assembly jacking device which comprises a jacking frame, an upper support, a lower support, a top plate provided with a supporting cylinder, an electromagnet, a supporting wheel set and a jacking jack. The laser alignment point of the infrared distance meter coincides with the projection of the center of the limiting round hole, and the horizontal position of the lower support can be rapidly adjusted through the elastic centering frame assembly and the adjusting jack, so that the center of the limiting round hole is aligned with the coordinate point, and the top plate of the fixed supporting cylinder is attracted and fixed through the electromagnet. Therefore, rapid and accurate positioning of the node ball is realized. When the chord members are assembled, the member bodies are supported through the supporting wheel sets, so that the chord members are more stable and safer in the assembling process, and the positions of the member bodies can be adjusted at the same time.

Description

Technical Field

[0001] This invention belongs to the field of steel space frame assembly technology, and specifically relates to a space frame assembly lifting device. Background Technology

[0002] The jacking method is a construction technique that uses hydraulic jacks and alternating inserts to lift and install a steel space frame, either partially or entirely. The jacking method is divided into overall jacking and jacking-and-joining methods. The jacking-and-joining method is suitable for irregularly shaped space frames where different parts are not on the same horizontal installation surface. During construction, the foundation space frame is first lifted using a jacking device. Then, the jacking device is used to lift the node spheres around it. Next, the chords are joined, and the process is repeated—this cycle continues until the entire steel space frame is successfully joined.

[0003] Existing jacking devices cannot accurately position the node ball during assembly. They can only roughly position and assemble the ball and then fine-tune it, or precisely adjust the installation position of the jacking frame itself. This process not only consumes a lot of adjustment time but also results in a large accumulation of errors. Furthermore, the chord members are fixed and assembled by manual support or hoisting during the assembly process, which not only fails to support and stabilize the pole body but also makes it difficult to guarantee the safety of the construction process.

[0004] Patent document with application number "CN202023083260X" discloses a steel space frame lifting guide and limiting bracket, including a lifting frame, a lower bracket mounted on the lifting frame, a lifting mechanism mounted on the lower bracket, an upper bracket and a lower chord ball of the steel space frame mounted on the lifting mechanism, and a guide and limiting component at the top of the lifting frame, the top of which is higher than the height of the lower chord ball of the steel space frame when the lifting mechanism is at its maximum upward stroke. The guide bracket has a simple manufacturing process and the bolt connection is easy to install and disassemble, solving the problem of misalignment during the installation and lifting process of the lifting frame. However, if there are large installation errors in the lifting frame and lower bracket structures in this prior art, or if the lifting frame is not accurately positioned during installation, there will be a large accumulation of errors, making it difficult to recalibrate the position of the lower chord ball, which is time-consuming and laborious. Therefore, the problem of not being able to quickly and accurately position the node ball during the lifting and splicing process still exists.

[0005] The above background information is provided only to aid in understanding the inventive concept and technical solution of this invention. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above information was disclosed on the filing date of this patent application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Summary of the Invention

[0006] The purpose of this invention is to provide a space frame assembly lifting device, thereby overcoming the technical defects of existing lifting machines in that they cannot accurately and quickly align the position coordinates of the node balls during lifting and assembly operations, and cannot stabilize the pole body when assembling chords.

[0007] To achieve the above objectives, the present invention provides a space frame assembly and lifting device, including a lifting frame, an upper support, and a lower support. A lifting jack is connected between the upper support and the lower support. Two or more lifting frames are vertically erected. The lower support is connected to the lowermost lifting frame via an elastic centering frame assembly, which allows the lower support to move horizontally. The device also includes a top plate, the bottom of which is connected to the top of the uppermost lifting frame via an electromagnet. A support cylinder is located at the top of the top plate, and a limiting hole is located at the top of the support cylinder. A positioning plate matching the outer circumference of the upper support is located at the bottom of the top plate. An infrared rangefinder is located at the bottom of the lower support, and the laser alignment point of the infrared rangefinder coincides with the projection of the center of the limiting hole onto the ground. Several detachable support wheel sets are located at the top of the top plate, and the distance between the support wheel sets and the top plate is adjustable.

[0008] Preferably, in the above technical solution, the side of the lifting frame is provided with a plurality of first horizontal support rods, first diagonal support rods, second horizontal support rods and second diagonal support rods. The first horizontal support rods and the second horizontal support rods are perpendicular to each other. The two ends of the first diagonal support rods are respectively connected to the first horizontal support rods. The two ends of the second diagonal support rods are respectively fixedly connected to the second horizontal support rods. The upper ends of adjacent first diagonal support rods are close to each other to form a guide portion. A reinforcing plate is welded at the position corresponding to the first horizontal support rod and the guide portion.

[0009] Preferably, in the above technical solution, the side of the upper support is provided with a telescopic top rod, which can extend into the guide portion when the telescopic top rod extends outward.

[0010] Preferably, in the above technical solution, the elastic centering frame assembly includes a first crossbeam, a second crossbeam, and a third crossbeam; the first crossbeam and the third crossbeam are respectively welded to the top and bottom of the second crossbeam and are perpendicular to the second crossbeam; the two ends of the second crossbeam rest on the top of the first cross brace; there are two first crossbeams; the outer side of the first crossbeam abuts against the inner side of the first cross brace; the top of the lower support is provided with two or more support rods; the two ends of the support rods extend outward from both sides of the lower support and can rest on the top of the second crossbeam; the outer sides of both sides of the lower support abut against the inner side of the second crossbeam; a first elastic part is provided between the end of the first crossbeam and the second cross brace; a detachable first adjusting jack is provided between the second crossbeam and the second cross brace; a second elastic part and a detachable second adjusting jack are provided between the support rod and the third crossbeam.

[0011] Preferably, in the above technical solution, a first support box is provided on the outer side of the second crossbeam, and the first adjusting jack can be placed in the first support box; a second support box is provided on the outer side of the connecting rod, and the second adjusting jack can be placed in the second support box.

[0012] Preferably, in the above technical solution, the first elastic part includes an elastic seat, a first stud, a first spring, and a first nut; the elastic seat is fixedly connected to the second cross brace, the end of the second cross beam is provided with a first through-pin hole, one end of the first stud is fixedly connected to the elastic seat, the other end of the first stud passes through the first through-pin and is threadedly connected to the first nut, the first spring is sleeved on the first stud, and the two ends of the first spring abut against the end face of the second cross beam and the elastic seat, respectively.

[0013] Preferably, in the above technical solution, the second elastic part includes a second stud, a second spring, and a second nut. The connecting rod has a second through-hole. One end of the second stud is fixedly connected to the side of the third crossbeam. The other end of the second stud passes through the second through-hole and is threadedly connected to the second nut. The second spring is sleeved on the second stud, and the two ends of the second spring abut against the side of the third crossbeam and the side of the connecting rod, respectively.

[0014] Preferably, in the above technical solution, the bottom of the top plate is provided with a reinforcing plate, a reinforcing beam is provided between the reinforcing plate and the top plate, one end of the positioning plate is fixedly connected to the reinforcing plate, the other end of the positioning plate extends downward and outward, and the top of the upper support is provided with a limiting plate, so that when the upper support rises, the outer side of the limiting plate can abut against the inner side of the positioning plate.

[0015] Preferably, in the above technical solution, a telescopic outrigger assembly is provided at the bottom of the lowest lifting frame. The telescopic outrigger assembly is provided with a handwheel and a telescopic leg. When the handwheel is rotated, the end of the telescopic leg can be extended or retracted downwards. The end of the telescopic leg is provided with a foot plate.

[0016] Preferably, in the above technical solution, the top surface of the top plate is provided with a spring clamp; the support wheel assembly includes a lifting mechanism, an adjusting mechanism, and wheel discs; the bottom of the lifting mechanism can be clamped by the spring clamp; the lifting structure includes a crank handle and a lifting screw; when the crank handle is rotated, the end of the lifting screw can be raised or lowered; the adjusting mechanism includes a lifting seat, a guide rail, an adjusting seat, a slider, a connecting plate, and an adjusting screw; the lifting seat is fixedly connected to the end of the lifting screw; the guide rail is fixedly connected to the lifting seat in a horizontal direction; the adjusting screw is rotatably connected to the lifting seat and parallel to the guide rail; the slider is slidably mounted on the guide rail and threadedly connected to the adjusting screw; the connecting plate is fixedly connected to the slider in a vertical direction; there are two wheel discs and they are rotatably connected to the connecting plate; the rotation axis of the wheel discs is perpendicular to the axis of the support cylinder; and several bullseye casters are provided on the outer periphery of the wheel discs.

[0017] Compared with existing technologies, the present invention has the following advantages: 1. The space frame assembly lifting device of this invention has an infrared rangefinder installed at the bottom of the lower support. The laser alignment point of the infrared rangefinder coincides with the projection of the center of the limiting circular hole. Through the elastic centering frame assembly and the adjusting jack, the horizontal position of the lower support can be quickly adjusted so that the center of the limiting circular hole is aligned with the coordinate point. The top plate of the fixed support cylinder is attracted and fixed by an electromagnet, thereby realizing the rapid and accurate positioning of the node ball. When assembling the chord, the support wheel group supports the pole body, making the assembly process more stable and safe, and can simultaneously adjust the position of the pole body.

[0018] 2. The upper support of the present invention is provided with a telescopic top rod on its side. When the upper support lifts the lifting frame as a whole, the telescopic top rod can extend outward and be guided by the guide part to the bottom of the reinforcing plate for positioning and lifting. When retracting, the telescopic top rod is retracted, so that the upper support can pass through the inside of the lifting frame.

[0019] 3. The elastic centering frame assembly in this invention can be adapted and installed with different lifting frames, and when adjustment is needed, it can be adjusted by installing the first and second adjusting jacks of the conventional structure, without the need for additional hydraulic components, which has good versatility and can save a lot of costs.

[0020] 4. The electromagnet magnetic attraction method in this invention can stably attract the top plate even when there is a certain offset between the top plate and the uppermost lifting frame, without affecting the coordinate position of the support cylinder, and is not affected by the installation error of the lowermost lifting frame; when the upper support is raised, the outer periphery of its top limiting plate can abut and position itself against the inner side of the positioning plate, so that the projection at the center of the limiting circular hole automatically coincides with the laser alignment point of the infrared rangefinder.

[0021] 5. The bottom of the lowest lifting frame in this invention is equipped with a support leg assembly. The telescopic legs of the support leg assembly can be extended and retracted downwards and can be easily adjusted by a handwheel, which enables the lifting frame body to be quickly leveled on uneven ground.

[0022] 6. The top surface of the top plate in this invention is equipped with a spring clamp, which not only positions the support wheel assembly but also allows for quick installation and disassembly. The lifting wheel assembly can achieve longitudinal and lateral fine-tuning through the lifting mechanism and adjusting screw, thereby supporting the chord while also fine-tuning the position of the rod body so that the projection of the rod body on the ground coincides with the coordinate line. Multiple bullseye casters are installed on the outer periphery of the wheel disc, which can prevent sliding friction between the side of the wheel disc and the rod body when the wheel disc is moved for fine-tuning or when the rod body is pulled axially, thus preventing scratches on the outer surface of the chord. Attached Figure Description

[0023] Figure 1 This is a structural diagram of the space frame assembly and lifting device of the present invention.

[0024] Figure 2 This is a structural diagram of the lifting frame.

[0025] Figure 3 This is a structural diagram of the upper support, lower support, and elastic centering frame assembly.

[0026] Figure 4 This is a schematic diagram of the installation of the top plate, support cylinder, and support wheel assembly.

[0027] Figure 5 This is a structural diagram of the top plate from the bottom view.

[0028] Figure 6 This is a partial cross-sectional view of the support wheel assembly.

[0029] Figure 7 This is a partial sectional view of the telescopic outrigger assembly.

[0030] Figure 8 This is a schematic diagram of the jacking device for assembling the space frame when the nodes are aligned.

[0031] Figure 9 This is a schematic diagram of the jacking device for assembling the space frame when the nodes are aligned.

[0032] Explanation of key figure labels: 100-Lifting frame, 110-First horizontal support rod, 120-First diagonal support rod, 130-Second horizontal support rod, 140-Second diagonal support rod, 150-Guide part, 160-Reinforcing plate, 170-Column; 200 - Upper support, 210 - Telescopic top rod, 220 - Limiting plate; 300-Lower support, 310-Rack rod, 311-Second through-hole, 320-Second tray; 400-Lifting Jack; 500 - Elastic centering frame assembly, 510 - First crossbeam, 520 - Second crossbeam, 521 - First tray, 532 - First through-hole, 530 - Third crossbeam, 540 - First elastic part, 541 - Elastic seat, 542 - First stud, 543 - First spring, 544 - First nut, 550 - First adjusting jack, 560 - Second elastic part, 561 - Second stud, 562 - Second spring, 563 - Second nut, 570 - Second adjusting jack; 600-Top plate, 610-Electromagnet, 620-Support cylinder, 630-Limiting hole, 640-Positioning plate, 650-Reinforcing plate, 660-Reinforcing beam, 670-Spring clamping plate; 700 - Infrared rangefinder, 710 - Nodal ball, 720 - Chord; 800-Support wheel assembly, 810-Lifting mechanism, 811-Crank handle, 812-Lifting screw, 813-Worm gear, 814-Screw sleeve, 815-Lift housing, 816-Base plate, 820-Adjusting mechanism, 821-Lifting seat, 822-Guide rail, 824-Slider, 825-Connecting plate, 826-Adjusting screw, 830-Wheel disc, 831-Bullseye caster; 900-Telescopic outrigger assembly, 910-Handwheel, 920-Telescopic leg, 930-Foot plate, 940-Telescopic housing, 950-Gear plate, 960-Stud, 970-Bevel gear. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "top surface," "bottom surface," "inner," "outer," "inner side," and "outer side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0035] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. Where the terms "first," "second," and "third" are used for descriptive purposes and to distinguish technical features, they should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0036] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The embodiments of this invention will now be described according to its overall structure.

[0037] like Figure 1 and Figure 9As shown, the space frame assembly and lifting device in this embodiment includes: a lifting frame 100, an upper support 200, a lower support 300, a lifting jack 400, an elastic centering frame assembly 500, a top plate 600, a support cylinder 620, an infrared rangefinder 700, and a support wheel set 800; there are two or more lifting frames 100, and the top and bottom of each lifting frame 100 can be connected by bolts and erected in the vertical direction. The lower support 300 is connected to the elastic centering frame assembly 500 by... The lowermost lifting frame 100 is connected to the elastic centering frame assembly 500, which allows the lower support 300 to move horizontally. Electromagnets 610 are fixedly installed at the four corners of the top of the uppermost lifting frame 100. When the electromagnets 610 are energized, their top surfaces can attract each other to the bottom of the top plate 600. A support cylinder 620 is installed on the top surface of the top plate 600. The axis of the support cylinder 620 is perpendicular to the top surface of the top plate 600, and the top of the support cylinder 620 faces upward. The support cylinder 620 has a limiting hole 630 at its top, and the lower half of the node ball 710 can be locked inside the limiting hole 630. A positioning plate 640 matching the outer circumference of the upper support 200 is provided on the bottom surface of the top plate 600. An infrared rangefinder 700 is installed at the bottom of the lower support 300. When the lifting jack 400 drives the upper support 200 to rise and lock inside the positioning plate 640, the laser alignment point of the infrared rangefinder 700 aligns with the limiting hole 630. The projection of the center on the ground can coincide. On the top surface of the top plate 600 and the four directions corresponding to the periphery of the support cylinder 620, there are detachable support wheel sets 800. The chord rod 720 is mounted on the support wheel sets 800. The distance between the support wheel sets 800 and the top plate 600 and the lateral position are adjustable. At the bottom of the lowest lifting frame 100, there are four telescopic support leg assemblies 900. Each telescopic support leg assembly 900 is set near the four corners of the lifting frame 100.

[0038] More in detail, such as Figure 2As shown, the lifting frame 100 includes uprights 170, first horizontal braces 110, first diagonal braces 120, second horizontal braces 130, and second diagonal braces 140. Two parallel second horizontal braces 130 and two parallel uprights 170 are respectively arranged on the left and right sides of the lifting frame 100. The two ends of the second horizontal braces 130 are welded to the sides of the uprights 170 and are perpendicular to the uprights 170. Two first horizontal braces 110 are respectively arranged on the front and rear sides of the lifting frame 100. The two ends of the first horizontal braces 110 are bolted to the uprights 170. The first diagonal brace 120 is located between the two first horizontal braces 110 and its two ends are fixedly welded to the first horizontal braces 110. The second diagonal brace 140 is located between the two second horizontal braces 130 and its two ends are fixedly welded to the second horizontal braces 130. The upper ends of the two adjacent first diagonal braces 120 are close to each other and form a guide part 150. A reinforcing plate 160 is welded to the side of the first horizontal brace 110, and the position of the reinforcing plate 160 corresponds to that of the guide part 150.

[0039] More in detail, such as Figure 3 As shown, a limiting plate 220 is installed on the top of the upper support 200. When the upper support 200 rises, the outer side of the limiting plate 220 can abut against the inner side of the positioning plate 640. A telescopic top rod 210 is provided on the side of the upper support 200. When the telescopic top rod 210 extends outward, it can extend into the guide part 150. The top of the lower support 300 is provided with two parallel connecting rods 310. The two ends of the connecting rods 310 extend outward from the two sides of the lower support 300, respectively.

[0040] More specifically, the flexible centering frame assembly 500 includes a first crossbeam 510, a second crossbeam 520, and a third crossbeam 530; the first crossbeam 510 and the third crossbeam 530 are respectively welded to the top and bottom of the second crossbeam 520 and are perpendicular to the second crossbeam 520; the two ends of the second crossbeam 520 rest on the top of the first cross brace 110; there are two first crossbeams 510, which are parallel to each other, and the outer surfaces of the two first crossbeams 510 abut against the inner surfaces of the first cross brace 110; the two ends of the strut 310 of the lower support 300 can rest on the top of the second crossbeam 520, and the outer surfaces of both sides of the lower support 300 are perpendicular to the second crossbeam 520. The inner sides of the first crossbeam 510 abut against each other; a first elastic part 540 is installed between the end of the first crossbeam 510 and the second cross brace 130; a detachable first adjusting jack 550 is installed between the second crossbeam 520 and the second cross brace 130; a second elastic part 560 and a detachable second adjusting jack 570 are installed between the support rod 310 and the third crossbeam 530; a first tray 521 is welded to the outer side of the middle part of the second crossbeam 520, and the first adjusting jack 550 can be placed in the first tray 521; a second tray 320 is welded to the outer side of the middle part of the support rod 310, and the second adjusting jack 570 can be placed in the second tray 320.

[0041] More specifically, the first elastic part 540 includes an elastic seat 541, a first stud 542, a first spring 543, and a first nut 544; the elastic seat 541 is fixedly connected to the inner side of the second cross brace 130; a first through-pin hole 532 is provided at the end of the second cross beam 520; one end of the first stud 542 is fixedly connected to the elastic seat 541; the other end of the first stud 542 passes through the first through-pin and is threadedly connected to the first nut 544; the first spring 543 is sleeved on the first stud 542; and both ends of the first spring 543 are respectively connected to the second cross beam 520. The end face abuts against the elastic seat 541; the second elastic part 560 includes a second stud 561, a second spring 562 and a second nut 563, and a second through hole 311 is provided on both sides of the connecting rod 310. One end of the second stud 561 is fixedly connected to the side of the third crossbeam 530, and the other end of the second stud 561 passes through the second through hole 311 and is threadedly connected to the second nut 563. The second spring 562 is sleeved on the second stud 561, and the two ends of the second spring 562 abut against the side of the third crossbeam 530 and the side of the connecting rod 310, respectively.

[0042] In addition, such as Figure 4 and Figure 5As shown, a reinforcing plate 650 is provided at the bottom of the top plate 600, and a reinforcing beam 660 is provided between the reinforcing plate 650 and the top plate 600. One end of the positioning plate 640 is fixedly connected to the reinforcing plate 650, and the other end of the positioning plate 640 extends downward and outward to form a guide structure. A spring clamp 670 is installed on the top surface of the top plate 600. The spring clamp 670 is parallel to the top surface of the top plate 600 and can elastically float in a direction perpendicular to the top surface of the top plate 600.

[0043] In addition, such as Figure 6 As shown, the support wheel assembly 800 includes a lifting mechanism 810, an adjusting mechanism 820, and a wheel disc 830. The lifting mechanism 810 includes a lifting housing 815, with a base plate 816 at the bottom of the lifting housing 815. The base plate 816 can be clamped by a spring clamp 670. A worm gear 813, a threaded sleeve 814, and a lifting screw 812 are installed inside the lifting housing 815. The inner hole of the threaded sleeve 814 is threadedly connected to the lifting screw 812, and the outer side of the threaded sleeve 814 meshes with the worm gear 813 through worm gear teeth. The end of the worm gear 813 is fixedly connected to the end of the crank handle 811. A limit block is provided between the lower end of the lifting screw 812 and the lifting housing 815. When the crank handle 811 rotates, it can drive the upper end of the lifting screw 812 to move up and down. The adjusting mechanism includes a lifting seat 821, a guide rail 822, a slider 824, a connecting plate 825, and an adjusting screw. 826, the lifting seat 821 is fixedly connected to the upper end of the lifting screw 812, the guide rail 822 is fixedly connected to the lifting seat 821 in a horizontal direction, the adjusting screw 826 is rotatably connected to the lifting seat 821 and parallel to the guide rail 822, the slider 824 is slidably mounted on the guide rail 822 and threadedly connected to the adjusting screw 826, the connecting plate 825 is fixedly connected to the slider 824 in a vertical direction, there are two wheel disks 830 and they are rotatably connected to the connecting plate 825, the rotation axis of the wheel disk 830 is perpendicular to the axis of the support cylinder 620, and multiple bullseye casters 831 are installed on the outer periphery of the wheel disk 830. When it is necessary to assemble the chord 720, the chord 720 can be supported between the two wheel disks 830 and its lateral and longitudinal positions can be adjusted by rotating the adjusting screw 826 and the crank 811.

[0044] More in detail, such as Figure 7As shown, the telescopic outrigger assembly 900 includes a telescopic housing 940, inside which a geared disc 950 and a telescopic leg 920 are installed. The rotation axis of the geared disc 950 coincides with the axis of the telescopic leg 920. A stud 960 is provided at the end of the geared disc 950. A screw hole is provided at the upper end of the telescopic leg 920, and the screw hole is threadedly engaged with the stud 960. A handwheel 910 is installed on the outside of the telescopic housing 940. A bevel gear 970 is installed in the middle of the handwheel 910. The bevel gear 970 meshes with the geared disc 950. A foot plate 930 is installed at the lower end of the telescopic leg 920. When the handwheel 910 is rotated, the lower end of the telescopic leg 920 can be driven to extend and retract downward.

[0045] Next, the working principle of one embodiment will be described in detail to enable those skilled in the art to better understand the present invention: like Figure 8 As shown, when centering the node ball 710 is required, first install two stacked lifting frames 100 on the field. Install the electromagnet 610 on top of the uppermost lifting frame 100 and keep it in a de-energized state. Place the top plate 600 on top of the electromagnet 610, with the top surface of the electromagnet 610 supporting the bottom surface of the reinforcing plate 650. Then loosen the first nut 544 and the second nut 563 in the elastic centering frame assembly 500. Turn on the infrared rangefinder 700. Install the first adjusting jack 550 and the second adjusting jack 570 in the first tray 521 and the second tray 320 respectively, and adjust them so that the laser aiming point of the infrared rangefinder 700 is aligned with the origin of the layout coordinate point on the field. Then place the node ball 710. Placed within the limiting circular hole 630, the upper support 200 rises and lifts the top plate 600. At this time, the outer side of the limiting plate 220 can abut against the inner side of the positioning plate 640, so that the projection of the center of the node ball 710 on the ground coincides with the laser alignment point. Then, the upper support 200 is lowered and separated from the positioning plate 640. At this time, the bottom surface of the reinforcing plate 650 is again attached to the top surface of the electromagnet 610. When the electromagnet 610 is energized, the reinforcing plate 650 is attracted. Then, the first adjusting jack 550 and the second adjusting jack 570 are disassembled. Under the restoring force of the first spring 543 and the second spring 562, the center of the lower support 300 coincides with the center of the lifting frame 100. Then, the first nut 544 and the second nut 563 are tightened.

[0046] like Figure 9As shown, when lifting and splicing operations are required, the telescopic jacking rod 210 of the upper support 200 is pulled outward, driving the upper support 200 to move upward. At this time, the telescopic jacking rod 210 can abut against the lower part of the first horizontal support rod 110 above the second to last lifting frame 100, lifting the lifting frame 100 to a height of one lifting frame 100. Then, a new lifting frame 100 is built and installed in this space, thereby achieving step-by-step lifting. This method is a common lifting method in the field and will not be described in detail here. It is worth noting that the telescopic jacking rod 210 can be pulled out and pushed back manually, or it can be pulled out and pushed back automatically by installing a built-in hydraulic push rod, thereby automatically controlling the telescopic movement of the telescopic jacking rod 210.

[0047] Once the jacking is in place, the two ends of the chord rod 720 are supported between the two wheel discs 830 of the two jacking devices. The lateral and longitudinal positions of the two ends of the chord rod 720 can be adjusted by rotating the adjusting screw 826 and the crank 811.

[0048] In summary, the space frame assembly and lifting device in this embodiment achieves rapid and accurate positioning of the node ball by using an infrared rangefinder 700 installed at the bottom of the lower support 300, with the laser alignment point of the infrared rangefinder 700 coinciding with the projection of the center of the limiting circular hole 630, and by using the elastic middle frame assembly 500 and adjusting jacks to quickly adjust the horizontal position of the lower support 300, aligning the center of the limiting circular hole 630 with the coordinate point, and using an electromagnet 610 to attract and fix the top plate 600 of the fixed support cylinder 620; during the assembly of the chord, the support wheel set 800 supports the pole body, making the assembly process more stable and safe, and simultaneously allowing for position adjustment of the pole body.

[0049] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although embodiments of the invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the invention and its practical application, so that those skilled in the art, after reading this specification, can make modifications, substitutions, variations, and various choices and changes to the embodiments as needed without departing from the principles and spirit of the invention, provided that such modifications, substitutions, variations, and choices and changes are within the scope of the claims of the invention and are protected by patent law.

Claims

1. A space frame assembly lifting device, comprising a lifting frame, an upper support, and a lower support, wherein a lifting jack is connected between the upper support and the lower support, characterized in that: The lifting frames consist of two or more vertically erected units. The lower support is connected to the lowermost lifting frame via an elastic centering frame assembly, which allows the lower support to move horizontally. The system also includes a top plate, the bottom of which is connected to the top of the uppermost lifting frame via an electromagnet. The top of the top plate has a support cylinder with a limiting hole at its top. The bottom of the top plate has a positioning plate that matches the outer circumference of the upper support. The bottom of the lower support has an infrared rangefinder, the laser alignment point of which coincides with the projection of the center of the limiting hole onto the ground. The top of the top plate has several detachable support wheel sets, the distance between the support wheel sets and the top plate being adjustable.

2. The space frame assembly and lifting device according to claim 1, characterized in that, The side of the lifting frame is provided with several first horizontal support rods, first diagonal support rods, second horizontal support rods and second diagonal support rods. The first horizontal support rods and the second horizontal support rods are perpendicular to each other. The two ends of the first diagonal support rods are respectively connected to the first horizontal support rods. The two ends of the second diagonal support rods are respectively fixedly connected to the second horizontal support rods. The upper ends of adjacent first diagonal support rods are close to each other to form a guide part. A reinforcing plate is welded at the position corresponding to the first horizontal support rod and the guide part.

3. The space frame assembly and lifting device according to claim 2, characterized in that, The upper support is provided with a telescopic rod on its side, which can extend into the guide section when it extends outward.

4. The space frame assembly and lifting device according to claim 2, characterized in that, The elastic centering frame assembly includes a first crossbeam, a second crossbeam, and a third crossbeam. The first and third crossbeams are welded to the top and bottom of the second crossbeam, respectively, and are perpendicular to the second crossbeam. The two ends of the second crossbeam rest on the top of the first cross brace. There are two first crossbeams, and the outer side of the first crossbeam abuts against the inner side of the first cross brace. The top of the lower support is provided with two or more support rods, the two ends of which extend outward from both sides of the lower support and can rest on the top of the second crossbeam. The outer sides of both sides of the lower support abut against the inner side of the second crossbeam. A first elastic part is provided between the end of the first crossbeam and the second cross brace. A detachable first adjusting jack is provided between the second crossbeam and the second cross brace. A second elastic part and a detachable second adjusting jack are provided between the support rod and the third crossbeam.

5. The space frame assembly and lifting device according to claim 4, characterized in that, The outer side of the second crossbeam is provided with a first support box, and the first adjusting jack can be placed in the first support box. The outer side of the connecting rod is provided with a second support box, and the second adjusting jack can be placed in the second support box.

6. The space frame assembly and lifting device according to claim 4, characterized in that, The first elastic part includes an elastic seat, a first stud, a first spring, and a first nut; the elastic seat is fixedly connected to the second cross brace, the end of the second cross beam is provided with a first through-pin hole, one end of the first stud is fixedly connected to the elastic seat, the other end of the first stud passes through the first through-pin and is threadedly connected to the first nut, the first spring is sleeved on the first stud, and the two ends of the first spring abut against the end face of the second cross beam and the elastic seat, respectively.

7. The space frame assembly and lifting device according to claim 4, characterized in that, The second elastic part includes a second stud, a second spring, and a second nut. The connecting rod has a second through-hole. One end of the second stud is fixedly connected to the side of the third crossbeam. The other end of the second stud passes through the second through-hole and is threadedly connected to the second nut. The second spring is sleeved on the second stud. The two ends of the second spring abut against the side of the third crossbeam and the side of the connecting rod, respectively.

8. The space frame assembly and lifting device according to claim 1, characterized in that, The bottom of the top plate is provided with a reinforcing plate, and a reinforcing beam is provided between the reinforcing plate and the top plate. One end of the positioning plate is fixedly connected to the reinforcing plate, and the other end of the positioning plate extends downward and outward. The top of the upper support is provided with a limiting plate, and when the upper support rises, the outer side of the limiting plate can abut against the inner side of the positioning plate.

9. The space frame assembly and lifting device according to claim 1, characterized in that, At the bottom of the lowest lifting frame, there is a telescopic outrigger assembly. The telescopic outrigger assembly is equipped with a handwheel and a telescopic leg. When the handwheel is turned, the end of the telescopic leg can be extended or retracted downwards. The end of the telescopic leg is equipped with a foot plate.

10. The space frame assembly and lifting device according to claim 1, characterized in that, The top surface of the top plate is provided with a spring clamp; the support wheel assembly includes a lifting mechanism, an adjusting mechanism, and wheel discs. The bottom of the lifting mechanism can be clamped by the spring clamp. The lifting mechanism includes a crank handle and a lifting screw. When the crank handle is rotated, the end of the lifting screw can be raised or lowered. The adjusting mechanism includes a lifting seat, a guide rail, an adjusting seat, a slider, a connecting plate, and an adjusting screw. The lifting seat is fixedly connected to the end of the lifting screw. The guide rail is fixedly connected to the lifting seat in a horizontal direction. The adjusting screw is rotatably connected to the lifting seat and parallel to the guide rail. The slider is slidably mounted on the guide rail and threadedly connected to the adjusting screw. The connecting plate is fixedly connected to the slider in a vertical direction. There are two wheel discs and they are rotatably connected to the connecting plate. The rotation axis of the wheel discs is perpendicular to the axis of the support cylinder. Several bullseye casters are provided on the outer periphery of the wheel discs.

Images