A cantilever truss steel structure lifting support

Abstract

This utility model relates to the field of cantilever truss lifting technology, specifically a cantilever truss steel structure lifting support, including a pre-assembly section. The pre-assembly section includes two reinforcing rods, each with a crossbar fixed at both ends. A first column and a second column are respectively installed and fixed on the two crossbars. A crossbeam is fixed between the first and second columns. Two extension beams are fixed to the outer side of the second column, and multiple hydraulic lifters are detachably installed and fixed at one end of each extension beam. In this utility model, the cantilever truss is divided into a pre-assembly section and a main body. The pre-assembly section is hoisted to the construction wall and pre-assembled with the lifting support using a tower crane. Then, the lifting support on the pre-assembly section, in conjunction with existing hydraulic lifters, lifts the entire cantilever truss body upwards, effectively solving the problems of large workload and long construction period associated with traditional high-altitude assembly of the entire cantilever truss.

Description

Technical Field

[0001] This utility model relates to the field of cantilever truss lifting technology, specifically a cantilever truss steel structure lifting support. Background Technology

[0002] A cantilever truss is a "hollow beam" that is fixed at one or both ends to an existing supporting structure such as columns, walls, or core tubes, while the other end extends outwards and has no ground support at the bottom. Currently, there are two main methods for installing cantilever trusses: the high-altitude in-situ assembly method and the overall hoisting method. The high-altitude in-situ assembly method uses hoisting equipment to lift the truss components to the assembly position, where they are assembled, welded, inspected, and painted on-site to form a complete cantilever truss. The overall hoisting method involves pre-assembling the truss components on the ground to form a super-large rigid block, and then using a hydraulic lifter to hoist it into place in one go.

[0003] While the high-altitude in-situ bulk assembly method has low requirements for lifting equipment, it involves a large amount of high-altitude work, high requirements for the bearing capacity of the site, and a long construction period. Although the overall hoisting method can reduce the time for high-altitude work, this method requires large hoisting equipment to hoist on a wide, hardened ground, which places high demands on equipment and space. Furthermore, when using supports equipped with hydraulic lifters to hoist cantilever trusses, most supports lack a structure to detect whether the steel strands on the hydraulic lifters are vertically tractioning the truss. Hoisting with the steel strands at an angle will increase the bending moment and friction between the steel strands and the guide holes of the hydraulic lifters, leading to damage to the steel strands. Utility Model Content

[0004] The purpose of this utility model is to provide a cantilever truss steel structure lifting support to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A cantilever truss steel structure lifting support includes a pre-assembly section that can form part of an existing cantilever truss. Column 1 and Column 2 are detachably installed on the pre-assembly section. A crossbeam is fixed between Column 1 and Column 2. Two extension beams are fixed to the outer side of Column 2. Multiple hydraulic lifters are fixedly installed on the extension beams. The hydraulic lifters can pull the main body of the cantilever truss upward.

[0007] The pre-assembly section includes two reinforcing rods, both ends of which are fixed with crossbars that are fixed to column one and column two. Multiple steel strands are driven and connected to the hydraulic lifter. The steel strands can suspend the cantilever truss. A detection component is also provided below the extension beam. The detection component includes two drive boxes that are fixed to the extension beam. Traction ropes are wound and fixed on the drive boxes. A sleeve is fixed between the two traction ropes. A movable block that is slidably connected to multiple steel strands is fixed at the bottom of the sleeve.

[0008] Furthermore, a connecting rod is fixed between two adjacent crossbars, and a V-shaped rod is fixed between two opposite crossbars.

[0009] Furthermore, the tops of both crossbars are fixed with pipe fittings, and the first and second uprights are detachably and fixedly connected to the corresponding pipe fittings.

[0010] Furthermore, a side beam is fixed between the extension beam and column one, and a diagonal bracing beam one is fixed between the top of column two and both extension beams, and a diagonal bracing beam two is fixed between the top of column one and column two.

[0011] Furthermore, a motor is fixed inside the drive box, and a winding wheel capable of winding the traction rope is fixed at the output end of the motor.

[0012] Furthermore, the bottom end of the traction rope is fixed with a connecting post, and the outer side of the sleeve is fixed with two connecting seats that are slidably connected to the corresponding connecting posts. The movable block has multiple round holes.

[0013] Furthermore, a pressure sensor is embedded and fixed inside the connector, and a support plate capable of squeezing the pressure sensor is fixed at the bottom of the connector.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. By dividing the entire cantilever truss into two parts, a pre-assembled section and the main body of the cantilever frame, the pre-assembled section is hoisted and fixed onto the construction wall using an external tower crane. Then, the lifting bracket of this application is installed and fixed on the pre-assembled section. The cantilever truss assembled on the ground is then hoisted to the pre-assembled section for assembly and installation using the lifting bracket. This method allows for the assembly and splicing of the pre-assembled section using a high-altitude in-situ assembly method. The remaining main body of the cantilever truss is then lifted using the lifting bracket on the pre-assembled section. This method helps solve the problem of hoisting the main body of the cantilever truss due to limited space, where large equipment cannot be used. Furthermore, the combination of the high-altitude in-situ assembly method and the overall lifting method improves the efficiency of the overall assembly and installation of the cantilever truss.

[0016] 2. A movable block and a sleeve are slidably connected to multiple steel strands of the hydraulic lifter. Both ends of the sleeve are slidably connected to connecting columns. The connecting columns are suspended below the extension beam by a traction rope. When the multiple steel strands are in a vertical state suspending the cantilever truss, the traction rope can pull the movable block to slide smoothly from bottom to top on the steel strands. When the cantilever truss is not directly below the steel strands, the steel strands will no longer suspend the cantilever truss vertically. At this time, when the traction rope pulls the movable block to move upward, the round hole on the movable block has a large upward sliding resistance at the skew position of the steel strand, which makes the movable block unable to move smoothly along the steel strand.

[0017] By installing an existing pressure sensor on the connecting seat on the outside of the sleeve, when the traction rope pulls the connecting column upward to move the sleeve and the movable block as a whole along the steel strand, the support plate at the bottom of the connecting column will abut against the pressure sensor. When the movable block moves smoothly along the vertical steel strand, the pressure reading of the pressure sensor is small. Conversely, when the movable block moves obstructed along the skewed steel strand, the pressure reading of the pressure sensor is large. To a certain extent, when the pressure reading of the pressure sensor is greater than a predetermined threshold, it indicates that the steel strand is in a skewed state. This allows users to detect in a timely manner whether the steel strand is vertically hoisted into the cantilever truss body, effectively preventing damage to the steel strand when hoisting the cantilever truss body with the steel strand skewed. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model, the construction wall, the prefabrication unit, and the cantilever truss;

[0019] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the external structure of column one and column two in this utility model;

[0021] Figure 4 This is a schematic diagram of the hydraulic lifter, extension beam, and detection assembly in this utility model;

[0022] Figure 5 This is a schematic diagram of the sleeve, movable block, connecting seat, and connecting column structure in this utility model.

[0023] In the diagram: 100, Pre-assembly section; 110, Reinforcing rod; 120, Crossbar; 130, Pipe fitting; 140, Connecting rod one; 150, V-shaped rod; 200, Column one; 210, Crossbeam; 220, Diagonal brace one; 300, Column two; 310, Extension beam; 320, Side beam; 330, Diagonal brace beam one; 340, Diagonal brace beam two; 350, Connecting rod two; 400, Hydraulic lifter; 410, Steel strand; 500, Detection component; 510, Drive box; 511, Motor; 512, Winding wheel; 513, Connecting plate; 520, Traction rope; 530, Connecting column; 531, Support plate; 540, Sleeve; 550, Movable block; 551, Round hole; 560, Connecting seat; 561, Pressure sensor. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1, please refer to Figure 1 - Figure 5 In this embodiment of the utility model, a cantilever truss steel structure lifting support includes a pre-installed part 100 pre-installed and fixed on the construction wall using an external tower crane. The pre-installed part 100 can be combined and fixed with the cantilever truss body to form a cantilever truss. The pre-installed part 100 includes two reinforcing rods 110, and each end of the reinforcing rod 110 is fixed with a crossbar 120. A first column 200 and a second column 300 are respectively installed and fixed on the two crossbars 120. A crossbeam 210 is fixed between the first column 200 and the second column 300. Two extension beams 310 are fixed to the outer side of the second column 300, and one end of the extension beam 310 is detachably mounted. Multiple hydraulic lifters 400 are fixedly installed, and multiple steel strands 410 are driven and connected to the hydraulic lifters 400. The bottom ends of the steel strands 410 are fixedly installed to the main body of the cantilever truss. A detection component 500 is also installed below the extension beam 310 to detect whether the steel strands 410 are vertically pulling the main body of the cantilever truss. The detection component 500 includes two drive boxes 510, both of which are fixedly connected to the extension beam 310. A traction rope 520 is wound and fixed on the drive box 510. A sleeve 540 is fixed between the two traction ropes 520. A movable block 550 that is slidably connected to the multiple steel strands 410 is fixed at the bottom of the sleeve 540.

[0026] Specifically, by dividing the cantilever truss into two parts, the pre-assembly section 100 and the main body of the cantilever truss, the pre-assembly section 100 is hoisted to the construction wall and pre-assembled with the lifting support using a tower crane. The main body of the cantilever truss is assembled on the ground. Then, the lifting support on the pre-assembly section 100, in conjunction with the existing hydraulic lifter 400, lifts the main body of the cantilever truss upward as a whole. This effectively solves the problems of large workload and long construction period caused by the traditional method of hoisting the cantilever truss as a whole to a high altitude for assembly. Furthermore, installing the lifting support on the pre-assembly section 100 to lift the main body of the cantilever truss as a whole also helps to solve the hoisting problem of not being able to use large equipment to hoist the main structure of the cantilever truss due to limited space.

[0027] like Figure 1 As shown in this embodiment, when hoisting the main body of the cantilever truss, two lifting brackets need to be installed and fixed on the pre-installation part 100 at different positions. Then, the two lifting brackets, together with the hydraulic lifting device 400, hoist the main body of the cantilever truss upward as a whole.

[0028] In this embodiment, the pre-assembly unit 100 and the cantilever truss body are well-known components of cantilever trusses in the art, and the relevant structural principles will not be elaborated. In addition, the hydraulic lifter 400 is also an existing hoisting device. The hydraulic lifter 400 uses a hydraulic jack as the actuator, a hydraulic pump station as the power equipment, and steel strands 410 to suspend the load. The load is raised by the alternating action of the upper and lower clamps of the hydraulic lifter 400 and the relative movement of the piston and cylinder of the hydraulic jack along the steel strands 410. The more steel strands 410 there are, the greater the lifting capacity. During the lifting, it is also necessary to keep the steel strands 410 vertical to ensure that each steel strand 410 is subjected to uniform force. The detailed working principle of the hydraulic lifter 400 will not be elaborated.

[0029] like Figure 2 As shown, in this embodiment, a connecting rod 140 is fixed between two adjacent horizontal bars 120 on the pre-assembly part 100, and a V-shaped rod 150 is fixed between two opposite horizontal bars 120, which helps to improve the firm support and fixation of the entire pre-assembly part 100 on the construction wall.

[0030] like Figure 2 and 3 As shown in this embodiment, the tops of the two crossbars 120 are each fixed with a pipe fitting 130. The first column 200 and the second column 300 are respectively detachably fixed to the corresponding pipe fittings 130 by bolts, so as to realize the installation of the lifting bracket and the pre-assembly part 100. The other two pipe fittings 130 are C-shaped and L-shaped, which helps to prevent the pipe fittings 130 from obstructing the placement of the diagonal brace 220 on the lifting bracket.

[0031] like Figure 2 and 3 As shown, in this embodiment, a side beam 320 is fixed between the extension beam 310 and the first column 200, a diagonal bracing beam 330 is fixed between the top of the second column 300 and both extension beams 310, a diagonal bracing beam 340 is fixed between the top of the first column 200 and the second column 300, and multiple connecting rods 350 are fixed between the side beam 320 and the extension beam 310, which helps to improve the overall hoisting stability of the lifting support.

[0032] like Figure 2 , Figure 4 and Figure 5As shown, in this embodiment, a motor 511 is fixed inside the drive box 510, and a winding wheel 512 capable of winding the traction rope 520 is fixed at the output end of the motor 511. A connecting plate 513 is detachably fixed between the drive box 510 and the extension beam 310 by bolts. A connecting post 530 is fixed at the bottom end of the traction rope 520. Two connecting seats 560 are fixed on the outside of the sleeve 540 and are slidably connected to the corresponding connecting posts 530. Multiple round holes 551 for the steel strand 410 to pass through are opened on the movable block 550. A pressure sensor 561 is embedded and fixed inside the connecting seat 560. A support plate 531 capable of squeezing the pressure sensor 561 is fixed at the bottom of the connecting post 530.

[0033] In this embodiment, before the steel strand 410 is hoisted to the cantilever truss body, the movable block 550 and the sleeve 540 are lowered to the bottom of the steel strand 410. When the steel strand 410 is hoisted to the truss body, two synchronous motors 511 can simultaneously drive the winding wheel 512 to rotate and wind the traction rope 520, so that the two connecting columns 530, through the connecting seat 560, carry the sleeve 540 and the columnar movable block 550 upward along the steel strand 410. At this time, the steel strand 410 slides inside the round hole 551 of the movable block 550, and the support plate 531 at the bottom of the connecting column 530 abuts against the pressure sensing part of the pressure sensor 561.

[0034] In this embodiment, when the steel strand 410 is vertically hoisted, the circular hole 551 on the movable block 550 can slide smoothly up the steel strand 410. At this time, the pressure of the support plate 531 against the pressure sensor 561 is small. When the steel strand 410 is hoisted at an angle, the circular hole 551 on the movable block 550 is hindered by the bending moment and cannot slide smoothly up the steel strand 410. At this time, the pressure of the support plate 531 against the pressure sensor 561 increases. The user can observe whether the pressure reading is greater than the preset threshold to indirectly determine whether the steel strand 410 is vertically hoisted.

[0035] In this embodiment, when the steel strand 410 is in the vertically hoisted cantilever truss body, existing steel cable special lubricating oil can be poured into the sleeve 540. The lubricating oil can slide along the steel strand 410 with the movable block 550, so that the outer side of the steel strand 410 is coated with lubricating oil. After lubrication, the steel strand 410 can be prevented from rusting and the running resistance on the hydraulic lifter 400 can be reduced.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A cantilever truss steel structure lifting support, characterized in that, include: The pre-installed part (100) is installed on the construction wall and can be combined and fixed with the main body of the cantilever truss. The pre-installed part (100) includes two reinforcing rods (110), and both ends of the reinforcing rods (110) are fixed with crossbars (120). Column 1 (200) and Column 2 (300) are respectively installed with the corresponding horizontal bar (120). A horizontal beam (210) is fixed between Column 1 (200) and Column 2 (300). Two extension beams (310) are fixed on the outside of Column 2 (300). Multiple hydraulic lifters (400) are mounted on an extension beam (310), and multiple steel strands (410) are driven to the hydraulic lifters (400). The detection component (500) is arranged below the extension beam (310) and can detect whether the steel strands (410) vertically pull the cantilever truss body. The detection component (500) includes two drive boxes (510) that are fixed to the extension beam (310). A traction rope (520) is wound and fixed on the drive box (510). A sleeve (540) is fixed between the two traction ropes (520). A movable block (550) that is slidably connected to multiple steel strands (410) is fixed at the bottom of the sleeve (540).

2. The cantilever truss steel structure lifting support according to claim 1, characterized in that, A connecting rod (140) is fixed between two adjacent crossbars (120), and a V-shaped rod (150) is fixed between two opposite crossbars (120).

3. The cantilever truss steel structure lifting support according to claim 1, characterized in that, The top of each of the two crossbars (120) is fixed with a pipe fitting (130), and the first column (200) and the second column (300) are respectively detachably fixed to the corresponding pipe fitting (130).

4. The cantilever truss steel structure lifting support according to claim 1, characterized in that, A side beam (320) is fixed between the extension beam (310) and the first column (200). A diagonal bracing beam (330) is fixed between the top of the second column (300) and the two extension beams (310). A diagonal bracing beam (340) is fixed between the top of the first column (200) and the second column (300).

5. The cantilever truss steel structure lifting support according to claim 1, characterized in that, A motor (511) is fixed inside the drive box (510), and a winding wheel (512) capable of winding the traction rope (520) is fixed at the output end of the motor (511).

6. The cantilever truss steel structure lifting support according to claim 5, characterized in that, The bottom end of the traction rope (520) is fixed with a connecting post (530), and the outer side of the sleeve (540) is fixed with two connecting seats (560) that are slidably connected to the corresponding connecting post (530). Multiple round holes (551) are opened on the movable block (550).

7. The cantilever truss steel structure lifting support according to claim 6, characterized in that, A pressure sensor (561) is embedded and fixed inside the connector (560), and a support plate (531) that can squeeze the pressure sensor (561) is fixed at the bottom of the connector (530).

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