Large-span steel truss and hoisting method thereof

Abstract

The application provides a large-span steel truss, which comprises a left building body and an adjusting device, one side of the left building body is provided with a right building body, the left building body and the right building body are provided with a steel truss body on the side close to each other, both sides of the steel truss body are welded with steel truss plates, the upper end of the steel truss plate is provided with a steel strand, the upper end of the left building body and the right building body is fixedly connected with a support frame, the bottom end of the support frame is fixedly connected with a support plate, and one end of the support frame is provided with a hydraulic lifter. The application solves the problem that when the steel truss on the corridor is lifted and hoisted, the steel truss needs to be fixed and limited by the steel strand for lifting, the connection stability of the steel strand and the temporary lifting appliance is low, the steel truss is prone to falling off, and the whole steel truss cannot be accurately connected and installed.

Description

Technical Field

[0001] This invention belongs to the field of steel truss hoisting technology, and particularly relates to a large-span steel truss and its hoisting method. Background Technology

[0002] Steel structures are widely used not only in marine engineering and bridge engineering, but also in industrial and civil buildings, and their application in building structures in my country is increasing. Due to their strong adaptability, they have been widely used in large-span spatial structures in recent years. Consequently, the assembly and hoisting conditions are becoming increasingly complex, and the technical requirements are becoming more stringent, making them quite common in daily life.

[0003] Chinese Patent CN108468430B discloses a construction method for hoisting and sliding a large-span steel truss structure with unequal height supports, comprising the following steps: A. Setting supports on the steel truss and installing sliding and jacking equipment; B. Dividing the truss into sections, assembling them, and hoisting the steel truss to a designated height one section at a time. The section hoisted later is then joined with sections already hoisted. The sliding and jacking equipment are used to slide the previous sections, clearing space within the hoisting equipment's operating range before hoisting the next section to the designated position; C. After sliding is complete, the supports are disassembled. This construction method for hoisting and sliding a large-span steel truss structure with unequal height supports can reduce the threshold for lifting machinery and energy consumption, reduce the pre-assembly footprint, reduce component deformation, and improve the overall structural quality.

[0004] The above-mentioned construction method for hoisting and sliding large-span steel truss structures with unequal support heights also has the following technical problems: when hoisting the steel truss on the connecting corridor, it is necessary to use steel strands to fix and limit the steel truss before lifting. Due to the low stability of the connection between the steel strands and the temporary lifting tools, the steel truss is prone to falling off, which in turn leads to the problem that the entire steel truss cannot be accurately connected and installed. Summary of the Invention

[0005] In order to solve the many problems existing in the prior art, the present invention proposes a large-span steel truss and its hoisting method.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A large-span steel truss includes a left building and an adjustment device. A right building is located on one side of the left building. A steel truss body is located on the side of the left and right buildings that are close to each other. Steel truss plates are welded to both sides of the steel truss body. Steel strands are provided at the upper end of the steel truss plates. Support frames are fixedly connected to the upper ends of both the left and right buildings. Support plates are fixedly connected to the bottom ends of the support frames. A hydraulic lifter is provided at one end of the support frame. The interior of the hydraulic lifter is slidably connected to the arc surface of the steel strands. The adjustment device includes a fixing plate and a limiting component.

[0008] By adopting the above technical solution, when lifting the steel truss in the middle of the connecting corridor, the hydraulic lifting device on the support frame of the building on both sides of the corridor can stretch and move the steel strands. One end of the steel strand is connected to the steel truss plate on the steel truss, thereby activating the hydraulic lifting device to raise the entire steel truss. Then, the adjustment device set on the steel truss plate is used to fix and limit the entire steel truss, which is conducive to better movement of the steel truss.

[0009] Preferably, one side of the fixing plate abuts against the surface of the steel truss plate, a connecting plate is fixedly connected to the bottom end of the fixing plate, a connecting groove is formed on the surface of the connecting plate, a plurality of first springs are uniformly fixedly connected to the inner wall of the connecting groove, an auxiliary plate is fixedly connected to the end of the plurality of first springs away from the connecting groove, a sliding hole is formed at the bottom end of the auxiliary plate, the inner wall of the sliding hole is slidably connected to the surface of the connecting plate, a connecting frame is fixedly connected to the upper end of the auxiliary plate, an insert is fixedly connected to the upper end of the fixing plate at the position corresponding to the connecting frame, the surface of the insert is slidably connected to the inner wall of the connecting frame, and both ends of the connecting frame are fixedly connected to the steel strand.

[0010] By adopting the above technical solution, when fixing and limiting the steel truss plates and steel strands on the steel truss body, the connecting plate on the fixing plate allows the sliding plate and the sliding hole on the auxiliary plate to slide together, thereby abutting against each other. The sliding hole and the first spring on the connecting groove allow the tension generated by the first spring to limit and fix the position of the entire fixing plate and auxiliary plate. Then, the insert block on the fixing plate and the connecting frame on the auxiliary plate are inserted and fixed, thereby fixing and limiting the position of the entire steel truss body, which is conducive to lifting the position of the entire steel strand on the steel truss body.

[0011] Preferably, the inner wall of the first spring is slidably connected with a telescopic rod, and the two ends of the telescopic rod are fixedly connected to the bottom end of the inner wall of the connecting groove and the bottom end of the inner wall of the sliding hole, respectively.

[0012] By adopting this preferred solution, when the first spring is used for a long time, the telescopic rod can protect the entire first spring and prevent the first spring from deforming.

[0013] Preferably, the limiting component includes a rotating shaft, the arc surface of which is threaded through the surface of the connecting frame, one end of which is rotatably connected to an extrusion plate, an extrusion groove is provided on the upper end of the fixed plate corresponding to the position of the extrusion plate, the inner wall of the extrusion groove abuts against the surface of the extrusion plate, limiting posts are fixedly connected to both sides of the surface of the extrusion plate, and limiting holes are provided on the surface of the connecting frame corresponding to the positions of the limiting posts, with the arc surface of the limiting post slidingly connected to the inner wall of the limiting hole.

[0014] By adopting this preferred solution, after the entire steel truss is fixed by the contact between the fixed plate and the auxiliary plate, the position of the extrusion plate on the rotating shaft on the auxiliary plate is moved by rotating the shaft, so that the extrusion plate engages with the extrusion groove on the fixed plate, which is beneficial for fixing the entire fixed plate and the auxiliary plate.

[0015] Preferably, auxiliary devices are provided at the positions of the steel strands on both the left and right building structures. Each auxiliary device includes four fixed frames, with two fixed frames forming a group. One end of each group of fixed frames is fixedly connected to the left and right building structures, respectively. A positioning plate is fixedly connected to one end of each fixed frame. A rotating shaft is rotatably connected to one end of each positioning plate. A rotating plate is rotatably connected to the arc surface of the rotating shaft. A positioning ring is fixedly connected to the end of the rotating plate away from the rotating shaft. A positioning frame is fixedly connected to the positioning plate at the position corresponding to the positioning ring. The same moving rod slides through the inner wall of the positioning frame and the positioning ring. A pull ring is fixedly connected to the upper end of the moving rod. The inner walls of both the fixed plate and the rotating plate slide through the arc surface of the steel strand.

[0016] By adopting the above technical solution, the steel strand is passed through by the rotation between the positioning plate and the rotating plate, and the position of the entire steel strand is lifted and limited by the steel truss body. At this time, the moving rod is inserted and limited by the positioning ring on the rotating plate and the positioning frame on the positioning plate, thereby fixing and limiting the position of the positioning plate and the rotating plate, which is beneficial to fixing and limiting the position of the entire steel strand.

[0017] Preferably, a second spring is fitted onto the arc surface of the moving rod, and the two ends of the second spring are fixedly connected to the moving rod and the positioning frame, respectively.

[0018] By adopting this preferred solution, when the position of the moving rod is moved, the tension generated by the second spring can limit the position of the entire moving rod, thereby helping to prevent the entire moving rod from falling off.

[0019] Preferably, the inner walls of the fixed plate and the rotating plate are provided with a sliding assembly. The sliding assembly includes three limiting frames, which are evenly distributed on the inner walls of the rotating plate and the fixed plate. The arc surfaces of the three limiting frames are rotatably connected to rollers. The arc surfaces of the rollers are covered with protective sleeves, and the arc surfaces of the rollers are slidably connected to the arc surfaces of the steel strands.

[0020] By adopting this preferred solution, when the positioning plate and rotating plate are used to limit the steel strand, in order to move the steel strand better, the rollers on the positioning plate and rotating plate slide with the steel strand, which helps to reduce the friction between the steel strands and facilitates better movement and use of the steel strands.

[0021] Preferably, both the left and right building structures are equipped with protective devices. Each protective device includes two limiting rods, both ends of which are fixedly connected to the surface of the left building structure. The arc surfaces of the two limiting rods are slidably connected to the same moving plate. A protective plate is fixedly connected to the surface of the moving plate. A protective pad, which is a rubber pad, is fixedly connected to the upper surface of the protective plate. A protective frame is fixedly connected to one end of the moving plate. A motor is fixedly connected to the inner wall of the protective frame. A drive gear is fixedly connected to the output end of the motor. A drive rack is meshed with the tooth surface of the drive gear. One side of the drive rack is fixedly connected to the surface of the left building structure.

[0022] By adopting the above technical solution, after the entire steel truss body is lifted to the designated position, in order to better protect the position of the entire steel truss body, the servo motor is started, which drives the drive gear and drive rack to rotate, thereby moving the position of the moving plate on the limit rod. This allows the protective plate and protective pad on the moving plate to protect the entire steel truss body, which helps to prevent the entire steel truss body from falling off.

[0023] Preferably, a positioning component is provided on one side of the movable plate. The positioning component includes two sliding columns, both of which are slidably connected to the arc surface of the limiting rod. The two sliding columns are located on both sides of the movable plate, and the arc surfaces of the two sliding columns are fixedly connected to the same connecting plate. A drive shaft is threaded through the surface of the connecting plate, and one end of the drive shaft abuts against the arc surface of the sliding rod.

[0024] By adopting this preferred solution, after the movable plate on the entire limiting rod is moved to the designated position, in order to better limit and fix the position of the movable plate, the driving shaft on the connecting plate on the sliding column is rotated to limit and fix the position of the entire movable plate.

[0025] The above hoisting method for large-span steel trusses includes the following steps:

[0026] S1. When raising and connecting the steel truss lifting unit on the connecting corridor, the hydraulic lifting device on the support frame on the building on both sides of the connecting corridor stretches and moves the position of the steel strand through the building support frame. One end of the steel strand is connected to the steel truss plate on the steel truss, thereby activating the hydraulic lifting device to raise the entire steel truss.

[0027] S2. In order to facilitate the fixing and limiting of the position of the entire steel truss body during the lifting process, the adjusting device set on the steel truss plate is used for fixing and limiting, and the auxiliary device on the building body is used to limit the position of the entire lifting steel strand, thereby avoiding the deviation of the rising position of the entire steel truss body. After the steel truss body is lifted to the designated position, a protective device is used for protection.

[0028] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0029] 1. In this invention, when lifting the steel truss body in the middle of the connecting corridor, the supporting frame on the building on both sides of the connecting corridor is used to allow the hydraulic lifting device on the supporting frame to stretch and move the steel strand. One end of the steel strand is connected to the steel truss plate on the steel truss body, thereby activating the hydraulic lifting device to raise the entire steel truss body. Then, the adjusting device set on the steel truss plate is used to fix and limit the entire steel truss body, which is conducive to better movement of the steel truss body.

[0030] 2. In this invention, by setting an adjustment device, when fixing and limiting the steel truss plates and steel strands on the steel truss body, the connecting plate on the fixing plate slides through the sliding hole on the auxiliary plate, thereby abutting the fixing plate and the auxiliary plate. The sliding hole and the first spring on the connecting groove allow the tension generated by the first spring to limit and fix the position of the entire fixing plate and auxiliary plate. Then, the insert block on the fixing plate and the connecting frame on the auxiliary plate are inserted and fixed, thereby fixing and limiting the position of the entire steel truss body. This is beneficial for the entire steel strand to lift the position of the steel truss body. When using the first spring, due to long-term use, the telescopic rod can protect the entire first spring and prevent deformation. After the entire steel truss plate is fixed by abutting between the fixing plate and the auxiliary plate, the position of the pressing plate on the rotating shaft on the auxiliary plate is moved by rotating the rotating shaft, thereby allowing the pressing plate to engage and limit the pressing groove on the fixing plate, which is beneficial for limiting and fixing the entire fixing plate and auxiliary plate.

[0031] 3. In this invention, by setting an auxiliary device, the steel strand is passed through by the rotation between the positioning plate and the rotating plate, and the entire steel strand is lifted and limited in position relative to the steel truss body. At this time, the positioning ring on the rotating plate and the positioning frame on the positioning plate allow the moving rod to be inserted and limited by the positioning ring and the positioning frame, thereby fixing and limiting the position of the positioning plate and the rotating plate. This is beneficial for fixing and limiting the position of the entire steel strand. When the position of the moving rod is moved, the tension generated by the second spring can limit the position of the entire moving rod, thereby helping to prevent the entire moving rod from falling off. When the positioning plate and the rotating plate limit the steel strand, in order to move the steel strand better, the rollers on the positioning plate and the rotating plate slide with the steel strand, thereby reducing the friction between the steel strands and facilitating better movement and use of the steel strand.

[0032] 4. In this invention, by setting up a protective device, after the entire steel truss body is lifted to the designated position, in order to better protect the position of the entire steel truss body, the servo motor is started, causing the servo motor to drive the drive gear and drive rack to rotate, thereby moving the position of the moving plate on the entire limit rod. This allows the protective plate and protective pad on the moving plate to protect the entire steel truss body, which helps to prevent the entire steel truss body from falling off. After the moving plate on the entire limit rod is moved to the designated position, in order to better limit and fix the position of the moving plate, the connecting plate on the sliding column is used to rotate the drive shaft on the connecting plate to limit and fix the position of the entire moving plate. Attached Figure Description

[0033] Figure 1 A three-dimensional structural schematic diagram of a large-span steel truss is provided for this invention;

[0034] Figure 2 This invention provides a three-dimensional partial structural diagram of a large-span steel truss.

[0035] Figure 3 This invention provides a schematic diagram of an adjustment device structure for a large-span steel truss.

[0036] Figure 4 This invention provides a partial structural schematic diagram of an adjustment device for a large-span steel truss.

[0037] Figure 5 This invention provides a schematic diagram of the disassembled structure of an adjustment device for a large-span steel truss.

[0038] Figure 6 This invention provides a schematic diagram of a sliding component structure for a large-span steel truss.

[0039] Figure 7A partial structural diagram of an auxiliary device for a large-span steel truss is provided for this invention.

[0040] Figure 8 This invention provides a schematic diagram of a protective device structure for a large-span steel truss.

[0041] Figure 9 This invention presents a schematic diagram of a positioning component structure for a large-span steel truss.

[0042] Legend: 1. Left building; 2. Right building; 3. Steel truss; 4. Steel truss plate; 5. Support frame; 6. Hydraulic lifter; 7. Support plate; 8. Steel strand; 9. Auxiliary device; 901. Fixed frame; 902. Rotating plate; 903. Positioning plate; 904. Rotating shaft; 905. Moving rod; 906. Positioning frame; 907. Positioning ring; 908. Pull ring; 909. Second spring; 910. Sliding assembly; 9101. Limiting frame; 9102. Roller; 9103. Protective sleeve; 10. Protective device; 101. Limiting rod; 102. Moving plate; 103. Protective plate; 104. Protective pad; 105. 106. Servo motor; 107. Drive gear; 108. Drive rack; 109. Protective frame; 1000. Positioning assembly; 1091. Sliding column; 1092. Connecting plate; 1093. Drive shaft; 11. Adjustment device; 1101. Fixing plate; 1102. Auxiliary plate; 1103. Connecting frame; 1104. Connecting groove; 1105. First spring; 1106. Telescopic rod; 1107. Sliding hole; 1108. Insert block; 1109. Connecting plate; 1110. Limiting assembly; 11101. Extrusion plate; 11102. Rotating shaft; 11103. Limiting column; 11104. Limiting hole; 11105. Extrusion groove. Implementation

[0043] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0044] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways than those described herein, and therefore the invention is not limited to the specific embodiments disclosed in the following specification.

[0045] Example 1, such as Figure 1-9As shown, the present invention provides a large-span steel truss, including a left building 1 and an adjustment device 11. A right building 2 is provided on one side of the left building 1. A steel truss body 3 is provided on the side of the left building 1 and the right building 2 that are close to each other. Steel truss plates 4 are welded to both sides of the steel truss body 3. Steel strands 8 are provided at the upper end of the steel truss plates 4. Support frames 5 are fixedly connected to the upper ends of the left building 1 and the right building 2. Support plates 7 are fixedly connected to the bottom end of the support frames 5. A hydraulic lifter 6 is provided at one end of the support frame 5. The interior of the hydraulic lifter 6 is slidably connected to the arc surface of the steel strands 8. Auxiliary devices 9 are provided at the positions of the left building 1 and the right building 2 corresponding to the positions of the steel strands 8. Protective devices 10 are provided on the surfaces of the left building 1 and the right building 2.

[0046] The specific settings and functions of its adjustment device 11, auxiliary device 9 and protective device 10 will be described in detail below.

[0047] like Figure 3 , Figure 4 and Figure 5 As shown, the adjusting device 11 includes a fixed plate 1101 and a limiting component 1110. One side of the fixed plate 1101 abuts against the surface of the steel truss plate 4. A connecting plate 1109 is fixedly connected to the bottom end of the fixed plate 1101. A connecting groove 1104 is formed on the surface of the connecting plate 1109. A plurality of first springs 1105 are uniformly fixedly connected to the inner wall of the connecting groove 1104. An auxiliary plate 1102 is fixedly connected to the end of the plurality of first springs 1105 away from the connecting groove 1104. A sliding hole 1107 is formed at the bottom end of the auxiliary plate 1102. The inner wall of the sliding hole 1107 is slidably connected to the surface of the connecting plate 1109. A connecting frame 1103 is fixedly connected to the upper end of the auxiliary plate 1102. An insert 1108 is fixedly connected to the upper end of the fixed plate 1101 at the position corresponding to the connecting frame 1103. The surface of the insert 1108 is slidably connected to the inner wall of the connecting frame 1103. Both ends of the connecting frame 1103 are connected to the connecting frame 1103. The steel strand 8 is fixedly connected. Telescopic rods 1106 are slidably connected to the inner wall of the first spring 1105. Both ends of the telescopic rods 1106 are fixedly connected to the bottom of the inner wall of the connecting groove 1104 and the bottom of the inner wall of the sliding hole 1107, respectively. The limiting assembly 1110 includes a rotating shaft 11102. The arc surface of the rotating shaft 11102 is threaded through the surface of the connecting frame 1103. One end of the rotating shaft 11102 is rotatably connected to a pressing plate 11101 and a fixing plate. An extrusion groove 11105 is provided at the upper end of 1101 corresponding to the position of the extrusion plate 11101. The inner wall of the extrusion groove 11105 abuts against the surface of the extrusion plate 11101. Limiting posts 11103 are fixedly connected to both sides of the surface of the extrusion plate 11101. Limiting holes 11104 are provided on the surface of the connecting frame 1103 corresponding to the positions of the limiting posts 11103. The arc surface of the limiting post 11103 is slidably connected to the inner wall of the limiting hole 11104.

[0048] The effect achieved by the entire adjustment device 11 is that the connecting plate 1109 on the fixed plate 1101 slides with the sliding hole 1107 on the auxiliary plate 1102, thereby abutting between the fixed plate 1101 and the auxiliary plate 1102. The sliding hole 1107 and the first spring 1105 on the connecting groove 1104 limit and fix the position of the entire fixed plate 1101 and the auxiliary plate 1102 by the tension generated by the first spring 1105. Then, the insert block 1108 on the fixed plate 1101 is inserted and fixed with the connecting frame 1103 on the auxiliary plate 1102, thereby fixing and limiting the position of the entire steel truss body 3.

[0049] like Figure 6 and Figure 7 As shown, the auxiliary device 9 includes four fixed frames 901, with each pair of fixed frames 901 forming a group. One end of each group of fixed frames 901 is fixedly connected to the left building 1 and the right building 2, respectively. A positioning plate 903 is fixedly connected to one end of each fixed frame 901. A rotating shaft 904 is rotatably connected to one end of the positioning plate 903. A rotating plate 902 is rotatably connected to the arc surface of the rotating shaft 904. A positioning ring 907 is fixedly connected to the end of the rotating plate 902 away from the rotating shaft 904. A positioning bracket 906 is fixedly connected to the positioning plate 903 at the position corresponding to the positioning ring 907. The same moving rod 905 slides through the inner wall of the positioning bracket 906 and the positioning ring 907. A pull ring is fixedly connected to the upper end of the moving rod 905. 908, the inner walls of the fixed plate 1101 and the rotating plate 902 slide through the arc surface of the steel strand 8. The arc surface of the moving rod 905 is fitted with a second spring 909. The two ends of the second spring 909 are fixedly connected to the moving rod 905 and the positioning frame 906, respectively. The inner walls of the positioning plate 903 and the rotating plate 902 are provided with a sliding assembly 910. The sliding assembly 910 includes three limit frames 9101. The three limit frames 9101 are evenly distributed on the inner walls of the rotating plate 902 and the positioning plate 903. The arc surfaces of the three limit frames 9101 are rotatably connected to rollers 9102. The arc surfaces of the rollers 9102 are fitted with protective sleeves 9103. The arc surfaces of the rollers 9102 are slidably connected to the arc surfaces of the steel strand 8.

[0050] The effect achieved by the entire auxiliary device 9 is that, through the positioning ring 907 on the rotating plate 902 and the positioning frame 906 on the positioning plate 903, the moving rod 905 is inserted and limited by the positioning ring 907 and the positioning frame 906, thereby fixing and limiting the position of the positioning plate 903 and the rotating plate 902, which is beneficial to fixing and limiting the position of the entire steel strand 8.

[0051] like Figure 8 and Figure 9As shown, the protective device 10 includes two limiting rods 101. Both ends of the two limiting rods 101 are fixedly connected to the surface of the left building 1. The arc surfaces of the two limiting rods 101 are slidably connected to the same moving plate 102. A protective plate 103 is fixedly connected to the surface of the moving plate 102. A protective pad 104, which is a rubber pad, is fixedly connected to the upper surface of the protective plate 103. A protective frame 108 is fixedly connected to one end of the moving plate 102. A servo motor 105 is fixedly connected to the inner wall of the protective frame 108. A drive gear 106 is fixedly connected to the output end of the servo motor 105. The toothed surface of 06 is engaged with a drive rack 107. One side of the drive rack 107 is fixedly connected to the surface of the left building 1. A positioning component 109 is provided on one side of the moving plate 102. The positioning component 109 includes two sliding columns 1091. Both sliding columns 1091 are slidably connected to the arc surface of the limiting rod 101. The two sliding columns 1091 are located on both sides of the moving plate 102. The arc surfaces of the two sliding columns 1091 are fixedly connected to the same connecting plate 1092. The surface of the connecting plate 1092 is threaded with a drive shaft 1093. One end of the drive shaft 1093 abuts against the arc surface of the sliding rod.

[0052] The effect of the entire protective device 10 is that by starting the servo motor 105, the servo motor 105 drives the drive gear 106 and drive rack 107 to rotate, thereby causing the moving plate 102 on the limit rod 101 to move, so that the protective plate 103 and protective pad 104 on the moving plate 102 protect the entire steel truss body 3.

[0053] Example 2, based on Example 1, works as follows: when lifting the steel truss 3 in the middle of the connecting corridor, the hydraulic lifter 6 on the support frame 5 on the building on both sides of the connecting corridor stretches and moves the steel strand 8. One end of the steel strand 8 is connected to the steel truss plate 4 on the steel truss 3, thereby activating the hydraulic lifter 6 to raise the entire steel truss 3. Then, the adjustment device 11 on the steel truss plate 4 is used to fix and limit the entire steel truss 3, which facilitates better movement of the steel truss 3.

[0054] When fixing and limiting the steel truss plates 4 and steel strands 8 on the steel truss body 3, the connecting plate 1109 on the fixing plate 1101 slides against the sliding hole 1107 on the auxiliary plate 1102, thereby abutting between the fixing plate 1101 and the auxiliary plate 1102. The sliding hole 1107 and the first spring 1105 on the connecting groove 1104 limit and fix the position of the entire fixing plate 1101 and the auxiliary plate 1102 with the tension generated by the first spring 1105. Then, the insert block 1108 on the fixing plate 1101 is inserted into the connecting frame 1103 on the auxiliary plate 1102 for further limiting and fixing, thereby fixing and limiting the position of the entire steel truss body 3, which is beneficial for the entire steel strands. Line 8 lifts the position of the steel truss body 3. When the first spring 1105 is used, due to the long-term use of the first spring 1105, the telescopic rod 1106 can protect the entire first spring 1105 to prevent deformation. After the entire steel truss 4 is limited and fixed by the contact between the fixed plate 1101 and the auxiliary plate 1102, the position of the pressing plate 11101 on the rotating shaft 11102 on the auxiliary plate 1102 is moved by the rotation of the rotating shaft 11102, so that the pressing plate 11101 and the pressing groove 11105 on the fixed plate 1101 are engaged and limited, which is beneficial to limit and fix the entire fixed plate 1101 and the auxiliary plate 1102.

[0055] Then, by utilizing the rotation between the positioning plate 903 and the rotating plate 902, the steel strand 8 is allowed to pass through, and the entire steel strand 8 is lifted and limited in position relative to the steel truss body 3. At this time, through the positioning ring 907 on the rotating plate 902 and the positioning frame 906 on the positioning plate 903, the moving rod 905 is inserted and limited with the positioning ring 907 and the positioning frame 906, thereby fixing and limiting the position of the positioning plate 903 and the rotating plate 902. This is beneficial for fixing and limiting the position of the entire steel strand 8. Regarding the moving rod 905... When the position is moved, the tension generated by the second spring 909 can limit the position of the entire moving rod 905, thereby helping to prevent the entire moving rod 905 from falling off. When the positioning plate 903 and the rotating plate 902 limit the steel strand 8, in order to move the steel strand 8 better, the roller shaft 9102 on the positioning plate 903 and the rotating plate 902 slides with the steel strand 8, thereby helping to reduce the friction between the steel strand 8 and making it easier to move and use the steel strand 8.

[0056] After the entire steel truss 3 is lifted to the designated position, in order to better protect the position of the entire steel truss 3, the servo motor 105 is started, causing the servo motor 105 to drive the drive gear 106 and drive rack 107 to rotate, thereby moving the position of the movable plate 102 on the entire limit rod 101. This allows the protective plate 103 and protective pad 104 on the movable plate 102 to protect the entire steel truss 3, which helps to prevent the entire steel truss 3 from falling off. After the movable plate 102 on the entire limit rod 101 is moved to the designated position, in order to better limit and fix the position of the movable plate 102, the connecting plate 1092 on the sliding column 1091 is used to rotate the drive shaft 1093 on the connecting plate 1092 to limit and fix the position of the entire movable plate 102.

[0057] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A large-span steel truss, comprising a left building (1), a right building (2), and an adjustment device (11), characterized in that: A right building (2) is provided on one side of the left building (1). A steel truss body (3) is provided on the side of the left building (1) and the right building (2) that are close to each other. Steel truss plates (4) are welded on both sides of the steel truss body (3). A steel strand (8) is provided at the upper end of the steel truss plate (4). A support frame (5) is fixedly connected to the upper end of both the left building (1) and the right building (2). A support plate (7) is fixedly connected to the bottom end of the support frame (5). A hydraulic lifter (6) is provided at one end of the support frame (5). The interior of the hydraulic lifter (6) is slidably connected to the arc surface of the steel strand (8). The adjustment device (11) includes a fixed plate (1101) and a limiting component (1110). One side of the fixing plate (1101) abuts against the surface of the steel truss plate (4). A connecting plate (1109) is fixedly connected to the bottom end of the fixing plate (1101). A connecting groove (1104) is opened on the surface of the connecting plate (1109). A plurality of first springs (1105) are evenly fixedly connected to the inner wall of the connecting groove (1104). An auxiliary plate (1102) is fixedly connected to one end of the plurality of first springs (1105) away from the connecting groove (1104). A sliding hole (1107) is provided at the bottom end. The inner wall of the sliding hole (1107) is slidably connected to the surface of the connecting plate (1109). A connecting frame (1103) is fixedly connected to the upper end of the auxiliary plate (1102). An insert (1108) is fixedly connected to the upper end of the fixed plate (1101) at the position corresponding to the connecting frame (1103). The surface of the insert (1108) is slidably connected to the inner wall of the connecting frame (1103). Both ends of the connecting frame (1103) are fixedly connected to the steel strand (8). Auxiliary devices (9) are provided at the positions of the steel strands (8) on both the left building (1) and the right building (2). Each auxiliary device (9) includes four fixed frames (901), which are arranged in pairs. One end of each set of fixed frames (901) is fixedly connected to the left building (1) and the right building (2), respectively. A positioning plate (903) is fixedly connected to one end of each fixed frame (901), and a rotating shaft (904) is rotatably connected to one end of the positioning plate (903). The arc surface of the rotating shaft (904) is rotatably connected to... A rotating plate (902) is connected to the rotating plate (902) with a positioning ring (907) fixedly connected to one end away from the rotating shaft (904). A positioning frame (906) is fixedly connected to the positioning plate (903) corresponding to the position of the positioning ring (907). The positioning frame (906) and the inner wall of the positioning ring (907) are slidably connected through the same moving rod (905). A pull ring (908) is fixedly connected to the upper end of the moving rod (905). The inner walls of the fixed plate (1101) and the rotating plate (902) are both slidably connected through the arc surface of the steel strand (8).

2. The large-span steel truss according to claim 1, characterized in that: The inner wall of the first spring (1105) is slidably connected with a telescopic rod (1106), and the two ends of the telescopic rod (1106) are fixedly connected to the bottom end of the inner wall of the connecting groove (1104) and the bottom end of the inner wall of the sliding hole (1107), respectively.

3. The large-span steel truss according to claim 1, characterized in that: The limiting component (1110) includes a rotating shaft (11102), the arc surface of the rotating shaft (11102) is threaded through the surface of the connecting frame (1103), one end of the rotating shaft (11102) is rotatably connected to an extrusion plate (11101), the upper end of the fixing plate (1101) is provided with an extrusion groove (11105) corresponding to the position of the extrusion plate (11101), the inner wall of the extrusion groove (11105) abuts against the surface of the extrusion plate (11101), both sides of the surface of the extrusion plate (11101) are fixedly connected to limiting posts (11103), the surface of the connecting frame (1103) is provided with limiting holes (11104) corresponding to the positions of the limiting posts (11103), and the arc surface of the limiting post (11103) is slidably connected to the inner wall of the limiting hole (11104).

4. The large-span steel truss according to claim 1, characterized in that: The arc surface of the moving rod (905) is fitted with a second spring (909), and the two ends of the second spring (909) are fixedly connected to the moving rod (905) and the positioning frame (906) respectively.

5. The large-span steel truss according to claim 1, characterized in that: The inner walls of the positioning plate (903) and the rotating plate (902) are provided with sliding components (910). The sliding components (910) include three limiting frames (9101). The three limiting frames (9101) are evenly distributed on the inner walls of the rotating plate (902) and the positioning plate (903). The arc surfaces of the three limiting frames (9101) are rotatably connected to rollers (9102). The arc surfaces of the rollers (9102) are covered with protective sleeves (9103). The arc surfaces of the rollers (9102) are slidably connected to the arc surfaces of the steel strands (8).

6. The large-span steel truss according to claim 1, characterized in that: Both the left building (1) and the right building (2) are provided with protective devices (10). Each protective device (10) includes two limiting rods (101). Both ends of the two limiting rods (101) are fixedly connected to the surface of the left building (1). The arc surfaces of the two limiting rods (101) are slidably connected to the same moving plate (102). A protective plate (103) is fixedly connected to the surface of the moving plate (102). The upper surface of the protective plate (103) is fixedly connected to... There is a protective pad (104), which is a rubber pad. One end of the moving plate (102) is fixedly connected to a protective frame (108). The inner wall of the protective frame (108) is fixedly connected to a servo motor (105). The output end of the servo motor (105) is fixedly connected to a drive gear (106). The tooth surface of the drive gear (106) meshes with a drive rack (107). One side of the drive rack (107) is fixedly connected to the surface of the left building (1).

7. The large-span steel truss according to claim 6, characterized in that: A positioning component (109) is provided on one side of the movable plate (102). The positioning component (109) includes two sliding columns (1091). Both sliding columns (1091) are slidably connected to the arc surface of the limiting rod (101). The two sliding columns (1091) are located on both sides of the movable plate (102). The arc surfaces of the two sliding columns (1091) are fixedly connected to the same connecting plate (1092). The surface of the connecting plate (1092) is threaded through a drive shaft (1093). One end of the drive shaft (1093) abuts against the arc surface of the sliding rod.

8. The method for hoisting a large-span steel truss as described in any one of claims 1-7, comprising the following steps: S1. When the steel truss body (3) on the connecting corridor is raised and connected, the support frame (5) on the building body on both sides of the connecting corridor is used to make the hydraulic lifter (6) on the support frame (5) stretch and move the position of the steel strand (8), and one end of the steel strand (8) is connected to the steel truss plate (4) on the steel truss body (3), thereby starting the hydraulic lifter (6) to raise the entire steel truss body (3); S2. In order to facilitate the fixing and limiting of the position of the entire steel truss body (3) during the lifting process, the adjusting device (11) set on the steel truss plate (4) is used for fixing and limiting, and the auxiliary device (9) on the building body is used to limit the position of the entire lifting steel strand (8), thereby avoiding the deviation of the rising position of the entire steel truss body (3). After the steel truss body (3) is lifted to the designated position, the protective device (10) is used for protection.

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