Detachable lifting lug structure for lifting steel truss girder

Abstract

The invention discloses a detachable lifting lug structure for hoisting a steel truss girder, and relates to the technical field of lifting lugs, the detachable lifting lug structure comprises a bottom plate, a detachable mechanism is arranged on one side of the bottom plate, a lifting lug body is arranged on one side of the detachable mechanism, and a driving mechanism is arranged on one side of the bottom plate; according to the detachable lifting lug structure for lifting the steel truss girder, under the cooperation of the multi-dimensional hole site self-adaptive adjusting mechanism and the driving mechanism, the mounting holes can be matched with the connection requirements of different types of steel truss girders, the application range of the lifting lug structure is widened, a brand new lifting lug does not need to be replaced due to the specification change of the steel truss girders, the construction cost is reduced, and the practicability is high. The problems that in the using process of an existing lifting lug, the position of a connecting hole is fixed, the position of the connecting hole is inconvenient to adjust, if the model and specification of a subsequently hoisted steel truss girder are changed, the position of the connecting hole is not matched with that of a new steel truss girder, consequently, the lifting lug cannot be continuously used, and the application range is reduced are solved.

Description

Technical Field

[0001] This invention relates to the field of lifting lug technology, specifically a detachable lifting lug structure for hoisting steel trusses. Background Technology

[0002] With the vigorous development of national infrastructure construction, steel trusses are widely used due to their characteristics such as light weight, strong span capacity, small building height, and fast construction speed. The installation and hoisting of steel trusses involves numerous operations, and lifting lugs are indispensable for the hoisting of the members.

[0003] For example, the Chinese announcement number CN220596768U describes a detachable large pipe fitting lifting lug, which states in its specification that "This utility model discloses a detachable large pipe fitting lifting lug, relating to the field of lifting lug technology, including an installation frame and a lifting lug; the installation frame has two corresponding locking holes on the left and right sides; the lifting lug includes a sliding plate, a lifting ring, and a connecting frame, wherein the sliding plate is slidably connected inside the installation frame, a lifting ring is fixed to the upper side of the sliding plate, a connecting frame is fixed to the rear side of the sliding plate, a sliding hole is opened on the rear side of the connecting frame, a pulling component is installed inside the sliding hole, a fixing component is installed inside the sliding plate, a fastening component is installed on the side of the connecting frame, the fixing component includes a T-shaped groove, a fixing ring, a locking post, and a first spring, a T-shaped groove is opened inside the sliding plate, two corresponding fixing rings are fixed to the left and right sides of the front end of the T-shaped groove, and a first spring is fixed to the end face of the fixing ring."

[0004] However, the existing devices have the following shortcomings during use:

[0005] The existing lifting lugs can be quickly disassembled and reused during use, but the position of the connecting holes is fixed and it is not convenient to adjust their position. If the model and specifications of the steel truss beam to be lifted change in the future, the position of the connecting holes will not match the new steel truss beam, making it unusable and reducing its applicability.

[0006] Therefore, we propose a detachable lifting lug structure for steel truss hoisting to solve the problems mentioned above. Summary of the Invention

[0007] The purpose of this invention is to provide a detachable lifting lug structure for steel truss hoisting. When the model and specifications of the steel truss to be hoisted change, the operator first adjusts the position of the connecting seat using a drive mechanism. During this process, the spacing adjustment of the connecting seat can be precisely controlled by the coordination of the first pointer and the first scale. Then, the first fastening bolt can be loosened, and the adjusting plate can be pushed to slide in the mounting groove. The adjusting plate drives the mounting plate to move. Combined with the correspondence of the second pointer and the second scale, the lateral position of the mounting hole can be precisely adjusted. After adjustment, the first fastening bolt is tightened to fix the adjusting plate. Through multi-dimensional adjustment, the mounting hole can be matched with the connection requirements of different models of steel trusses, improving the applicability of the lifting lug structure. It eliminates the need to replace the lifting lug with a new one due to changes in the specifications of the steel truss, reducing construction costs and solving the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a detachable lifting lug structure for hoisting steel truss beams, comprising a base plate, a detachable mechanism provided on one side of the base plate, a lifting lug body provided on one side of the detachable mechanism, a driving mechanism provided on one side of the base plate, and a multi-dimensional hole position adaptive adjustment mechanism provided on one side of the driving mechanism.

[0009] The multi-dimensional hole position adaptive adjustment mechanism includes four connecting seats. The driving mechanism is used to drive the four connecting seats to move, thereby adjusting the spacing between the four connecting seats. Four first scales are installed on one side of the four connecting seats. Two first pointers are provided on one side of the base plate. Four mounting slots are opened on one side of the four connecting seats. Four adjusting plates are slidably installed in the four mounting slots. Four first fastening bolts for fixing the four adjusting plates are threaded to one side of the four connecting seats. Four mounting plates are fixedly connected to one side of the four adjusting plates. Four mounting holes are opened on one side of the four mounting plates. Four second pointers are installed on one side of the four mounting plates. Four second scales are provided on one side of the four connecting seats.

[0010] Preferably, the detachable mechanism includes a fixing block fixedly connected to one side of the base plate, and the top of the fixing block is provided with a first T-shaped groove.

[0011] Preferably, a first T-shaped block is slidably connected in the first T-shaped groove, the lifting lug body is fixedly connected to one side of the first T-shaped block, two first wedge blocks are fixedly connected to the bottom of the first T-shaped block, and two wedge grooves are opened on both sides of the first T-shaped block.

[0012] Preferably, two fixing shells are fixedly connected to both sides of the fixing block, and four sliding grooves are opened on the inner side of the two fixing shells, and two sliding plates are slidably connected in the four sliding grooves.

[0013] Preferably, two connecting rods are fixedly connected to one side of the two skateboards, and two movable rods are fixedly connected to the other side of the two skateboards.

[0014] Preferably, one end of each of the two movable rods passes through the two fixed shells and is fixedly connected to two pull rings; one end of each of the two connecting rods passes through the fixed block and the first T-slot and is fixedly connected to two second wedge blocks; the two second wedge blocks are adapted to the two wedge slots; and two return springs are sleeved on the outer surface of the two movable rods.

[0015] Preferably, the drive mechanism includes second T-slots formed on both sides of the base plate, and two bidirectional lead screws are rotatably connected in the two second T-slots.

[0016] Preferably, four second T-blocks are threaded onto the outer surfaces of the two bidirectional lead screws, the four second T-blocks are slidably connected in the two second T-slots, and four connecting seats are fixedly connected to one side of the four second T-blocks.

[0017] Preferably, the smooth ends of the two bidirectional lead screws move through the two second T-slots and extend to the outside of the base plate, and the smooth ends of the two bidirectional lead screws are equipped with two rotating caps.

[0018] Preferably, an installation and fixing mechanism is provided on the inner side of the four mounting holes. The installation and fixing mechanism includes four second fastening bolts, four nuts are threadedly connected to the outer surfaces of the four second fastening bolts, and four washers are sleeved on the outer surfaces of the four second fastening bolts.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. This invention, by setting a multi-dimensional hole position adaptive adjustment mechanism, allows workers to adjust the position of the connecting seat using a drive mechanism when the model or specifications of the steel truss beam to be hoisted change. During this process, the spacing of the connecting seat can be precisely controlled by the coordination of the first pointer and the first scale. Then, the first fastening bolt can be loosened, pushing the adjustment plate to slide within the mounting groove. The adjustment plate moves the mounting plate, and the lateral position of the mounting hole can be precisely adjusted by the correspondence between the second pointer and the second scale. After adjustment, the first fastening bolt is tightened to fix the adjustment plate. This multi-dimensional adjustment method allows the mounting hole to match the connection requirements of different steel truss beam models, expanding the applicability of the lifting lug structure. It eliminates the need to replace the lifting lug with a completely new one due to changes in steel truss beam specifications, reducing construction costs. It also solves the problem that existing lifting lugs have fixed connecting hole positions, making them difficult to adjust. Furthermore, if the model or specifications of the steel truss beam to be hoisted change, the connecting hole position may not match the new steel truss beam, rendering the lug unusable and reducing its applicability.

[0021] 2. This invention features a detachable mechanism. When the lifting lug body needs to be installed, the first T-block is aligned with the first T-slot and slid in. The first wedge block at the bottom of the first T-block presses against the second wedge block, causing the second wedge block to move the connecting rod and the sliding plate. The sliding plate compresses the return spring. When the first T-block is fully slid in, the return spring pushes the sliding plate back to its original position under its elastic force. The sliding plate, through the connecting rod, moves the second wedge block into the wedge slot, completing the rapid fixing of the lifting lug body. When the lifting lug body needs to be disassembled, pulling the pull ring moves the movable rod and the sliding plate. The sliding plate, through the connecting rod, pulls the second wedge block out of the wedge slot, allowing the first T-block to be removed from the first T-slot, thus disassembling the lifting lug body. This enables rapid assembly and disassembly between the lifting lug body and the base plate, facilitating subsequent reuse and maintenance without the need for complex tools, saving assembly and disassembly time, improving construction efficiency, and also facilitating individual inspection or replacement of the lifting lug body, extending the service life of the overall structure.

[0022] 3. By setting up an installation and fixing mechanism, when connecting the lifting lug structure to the steel truss, the operator can pass the second fastening bolt through the mounting hole and the corresponding connection hole on the steel truss, then put on the washer and tighten the nut. The washer increases the contact area between the nut and the surface of the steel truss, reduces pressure, and avoids damage to the surface of the steel truss due to excessive pressure. It also effectively prevents the nut from loosening and enhances the stability of the connection. The threaded connection between the second fastening bolt and the nut is reliable and easy to disassemble. It ensures that there will be no relative displacement between the lifting lug structure and the steel truss during the hoisting process, ensuring the safety of the hoisting operation and improving the stability and safety of the connection between the lifting lug structure and the steel truss. Attached Figure Description

[0023] Figure 1 This is a perspective view of the main structure of a detachable lifting lug structure for hoisting steel truss beams according to the present invention.

[0024] Figure 2 This is a perspective view of the right side of a detachable lifting lug structure for hoisting steel truss beams according to the present invention.

[0025] Figure 3 This is a perspective view of the rear structure of a detachable lifting lug structure for hoisting steel truss beams according to the present invention.

[0026] Figure 4 This is a perspective view of the bottom structure of a detachable lifting lug structure for hoisting steel truss beams according to the present invention.

[0027] Figure 5 This is a three-dimensional cross-sectional view of the fixing block and fixing shell in a detachable lifting lug structure for hoisting steel truss beams according to the present invention.

[0028] Figure 6This is a three-dimensional view of the first T-shaped block in a detachable lifting lug structure for hoisting steel truss beams according to the present invention.

[0029] Figure 7 This invention relates to a detachable lifting lug structure for hoisting steel truss beams. Figure 1 Enlarged 3D view of the structure at point A in the middle.

[0030] Figure 8 This invention relates to a detachable lifting lug structure for hoisting steel truss beams. Figure 5 Enlarged 3D view of the structure at point B.

[0031] In the diagram: 1. Base plate; 2. Detachable mechanism; 201. Fixing block; 202. First T-slot; 203. First T-block; 204. First wedge block; 205. Wedge groove; 206. Fixing shell; 207. Slide groove; 208. Slide plate; 209. Connecting rod; 210. Movable rod; 211. Pull ring; 212. Second wedge block; 213. Return spring; 3. Lifting lug body; 4. Drive mechanism; 401. Second T-slot; 40 2. Two-way lead screw; 403. Second T-block; 404. Rotating cap; 5. Multi-dimensional hole position adaptive adjustment mechanism; 501. Connecting seat; 502. First scale; 503. First pointer; 504. Adjusting plate; 505. First fastening bolt; 506. Mounting plate; 507. Mounting hole; 508. Second pointer; 509. Second scale; 6. Mounting and fixing mechanism; 601. Second fastening bolt; 602. Nut; 603. Washer. Detailed Implementation

[0032] 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.

[0033] like Figures 1-8 As shown, the present invention provides a technical solution: a detachable lifting lug structure for hoisting steel truss beams, including a base plate 1, a detachable mechanism 2 is provided on one side of the base plate 1, a lifting lug body 3 is provided on one side of the detachable mechanism 2, a driving mechanism 4 is provided on one side of the base plate 1, and a multi-dimensional hole position adaptive adjustment mechanism 5 is provided on one side of the driving mechanism 4.

[0034] The multi-dimensional hole position adaptive adjustment mechanism 5 includes four connecting seats 501. A drive mechanism 4 drives the four connecting seats 501 to move, thereby adjusting the spacing between them. Four first scales 502 are installed on one side of each connecting seat 501. Two first pointers 503 are provided on one side of the base plate 1. Four mounting slots are provided on one side of each connecting seat 501, and four adjusting plates 504 are slidably installed within these slots. Four first fastening bolts 505 are threadedly connected to one side of each connecting seat 501 to secure the four adjusting plates 504. Four mounting plates 506 are fixedly connected to one side of each adjusting plate 504. Four mounting holes 507 are provided on one side of each mounting plate 506. Four second pointers 508 are installed on one side of each mounting plate 506. Four second scales 509 are provided on one side of each connecting seat 501. By setting up the multi-dimensional hole position adaptive adjustment mechanism 5 and the drive mechanism 4, when the model and specifications of the subsequently hoisted steel truss beam change, the operator can... First, the position of the connecting seat 501 is adjusted using the drive mechanism 4. During this process, the spacing adjustment of the connecting seat 501 can be precisely controlled by the cooperation of the first pointer 503 and the first scale 502. Then, the first fastening bolt 505 can be loosened, and the adjusting plate 504 can be pushed to slide in the mounting groove. The adjusting plate 504 drives the mounting plate 506 to move. Combined with the correspondence between the second pointer 508 and the second scale 509, the lateral position of the mounting hole 507 can be precisely adjusted. After the adjustment is completed, the first fastening bolt 505 is tightened to fix the adjusting plate 504. Through multi-dimensional adjustment, the mounting hole 507 can be matched with the connection requirements of different models of steel trusses, which improves the applicability of the lifting lug structure. There is no need to replace the lifting lug with a brand new one due to changes in the specifications of the steel trusses, which reduces the construction cost. It solves the problem that the position of the connecting hole of the existing lifting lug is fixed during use, which is not convenient to adjust. If the model and specifications of the steel trusses to be lifted change later, the position of the connecting hole will not match the new steel truss, resulting in the inability to continue to use it and reducing the applicability.

[0035] like Figure 1 , Figure 5 and Figure 6 As shown, the detachable mechanism 2 includes a fixing block 201 fixedly connected to one side of the base plate 1. The top of the fixing block 201 is provided with a first T-slot 202. The fixing block 201 provides a stable installation base for the detachable mechanism 2, ensuring the firmness of the connection between the detachable mechanism 2 and the base plate 1. The sliding fit structure between the first T-slot 202 and the first T-block 203 limits the installation trajectory of the lifting lug body 3, so that the lifting lug body 3 can only be installed and disassembled along the direction of the first T-slot 202, avoiding misalignment during installation. At the same time, the T-shaped structure can effectively prevent the lifting lug body 3 from falling off from the vertical direction during use, ensuring the structural stability of the lifting lug body 3 after installation, and providing structural support for the quick disassembly and safe use of the lifting lug body 3.

[0036] like Figure 5 , Figure 6 and Figure 8 As shown, a first T-shaped block 203 is slidably connected in the first T-shaped groove 202, and the lifting lug body 3 is fixedly connected to one side of the first T-shaped block 203. Two first wedge blocks 204 are fixedly connected to the bottom of the first T-shaped block 203, and two wedge grooves 205 are opened on both sides of the first T-shaped block 203. The design of the first wedge block 204 enables the first T-shaped block 203 to automatically squeeze the second wedge block 212 through the wedge surface when it slides into the first T-shaped groove 202, realizing the automatic triggering of the fixing structure without additional manual operation, simplifying the installation steps. The wedge groove 205 provides a precise engagement position for the second wedge block 212, ensuring that the second wedge block 212 can be stably engaged, thus achieving a firm fixation of the lifting lug body 3.

[0037] like Figure 5 and Figure 8 As shown, two fixed shells 206 are fixedly connected to both sides of the fixed block 201. Four sliding grooves 207 are provided on the inner side of the two fixed shells 206, and two sliding plates 208 are slidably connected in the four sliding grooves 207.

[0038] like Figure 1 , Figure 5 and Figure 8 As shown, two connecting rods 209 are fixedly connected to one side of the two sliding plates 208, and two movable rods 210 are fixedly connected to the other side of the two sliding plates 208. The fixed shell 206 provides a closed installation space for components such as the sliding plates 208 and the return spring 213, preventing external dust and impurities from entering and affecting the movement of the components, while protecting the internal components from external damage. The sliding groove 207 and the sliding plate 208 slide together, limiting the direction of movement of the sliding plate 208, ensuring that the sliding plate 208 can drive the connecting rods 209 and the second wedge block 212 to move stably, ensuring the smooth operation of the detachable mechanism 2. The connecting rod 209, as the intermediate component connecting the sliding plate 208 and the second wedge block 212, can synchronously transmit the movement of the sliding plate 208 to the second wedge block 212, ensuring the consistency of the movement of the second wedge block 212 and the sliding plate 208, and ensuring the smooth engagement and unlocking process.

[0039] like Figure 1 , Figure 5 , Figure 6 and Figure 8As shown, one end of each of the two movable rods 210 movably passes through the two fixed shells 206 and is fixedly connected to two pull rings 211. One end of each of the two connecting rods 209 movably passes through the fixed block 201 and the first T-slot 202 and is fixedly connected to two second wedge blocks 212. The two second wedge blocks 212 are adapted to the two wedge slots 205. Two return springs 213 are sleeved on the outer surface of the two movable rods 210. Through the cooperation between the movable rods 210 and the pull rings 211, a convenient operating component is provided for the operator. When disassembling the lifting lug body 3, simply pull the pull ring 211 to move the sliding plate 208 through the movable rods 210, thereby unlocking the second wedge blocks 212. No complicated tools are needed, the operation is simple and labor-saving, and the disassembly efficiency is improved. The second wedge blocks 212 and the wedge slots 205 are connected to the fixed block 201 and the first T-slot 202. The 05-inch fitting design ensures a tight fit between the two parts when they engage, increasing the contact area and enhancing the friction after engagement. This prevents the second wedge block 212 from accidentally dislodging from the wedge groove 205, ensuring the stability of the lifting lug body 3 after installation. The return spring 213 enables automatic reset of the fixed structure. During installation, the first wedge block 204 presses against the second wedge block 212, causing the slide plate 208 to move and compress the return spring 213. When the first T-block 203 is fully slid in, the return spring 213 automatically pushes the slide plate 208 back to its original position under the action of its elasticity, causing the second wedge block 212 to engage in the wedge groove 205. This eliminates the need for manual reset, simplifying the installation process. At the same time, the elasticity of the return spring 213 maintains the pressure of the second wedge block 212 on the wedge groove 205, further enhancing the fixing effect.

[0040] like Figure 1 , Figure 2 and Figure 7 As shown, the drive mechanism 4 includes a second T-slot 401 formed on both sides of the base plate 1. Two bidirectional lead screws 402 are rotatably connected in the two second T-slots 401. The second T-slots 401 provide installation space and movement track for the bidirectional lead screws 402 and the second T-blocks 403, and limit the movement direction of the second T-blocks 403, ensuring that the second T-blocks 403 can only slide along the direction of the slot, and avoid deviation during movement.

[0041] like Figure 1 and Figure 7As shown, four second T-blocks 403 are threaded onto the outer surfaces of the two bidirectional lead screws 402. The four second T-blocks 403 are slidably connected within the two second T-slots 401, and four connecting seats 501 are fixedly connected to one side of the four second T-blocks 403. The threaded structure of the bidirectional lead screws 402 can convert rotational motion into linear motion of the second T-blocks 403. The bidirectional thread design allows two second T-blocks 403 on the same bidirectional lead screw 402 to move simultaneously in opposite directions, achieving synchronous adjustment of the spacing of the connecting seats 501 and improving adjustment efficiency. The fixed connection between the second T-blocks 403 and the connecting seats 501 can stably transmit the driving force of the bidirectional lead screws 402 to the connecting seats 501, ensuring that the connecting seats 501 can move synchronously with the second T-blocks 403, thus guaranteeing the stability and accuracy of the spacing adjustment of the connecting seats 501.

[0042] like Figure 2 and Figure 7 As shown, the smooth ends of the two bidirectional lead screws 402 move through the two second T-slots 401 and extend to the outside of the base plate 1. Two rotating caps 404 are installed on the smooth ends of the two bidirectional lead screws 402. By extending the smooth ends of the bidirectional lead screws 402 to the outside of the base plate 1 and installing the rotating caps 404, a convenient operating position is provided for the operator. Simply rotating the rotating caps 404 can drive the bidirectional lead screws 402 to rotate, thereby adjusting the spacing of the connecting seats 501. The operation is convenient and labor-saving. The design of the rotating caps 404 increases the contact area between the hand and the lead screw, avoiding excessive force on the hand during rotation and causing discomfort. At the same time, the outer surface of the rotating caps 404 is designed with an anti-slip structure, further improving the stability during operation and preventing the hand from slipping and affecting the adjustment efficiency.

[0043] like Figure 1 , Figure 2 and Figure 3 As shown, an installation and fixing mechanism 6 is provided inside the four mounting holes 507. The installation and fixing mechanism 6 includes four second fastening bolts 601. The outer surfaces of the four second fastening bolts 601 are threaded with four nuts 602. The outer surfaces of the four second fastening bolts 601 are fitted with four washers 603. The threaded connection between the second fastening bolts 601 and the nuts 602 has the characteristics of firm connection and convenient disassembly. It can tightly connect the lifting lug structure to the steel truss. At the same time, it can be separated by simply unscrewing the nuts 602, which meets the needs of repeated use. The washers 603 can effectively increase the contact area between the nuts 602 and the surface of the steel truss, reduce the pressure of the nuts 602 on the surface of the steel truss, and avoid the appearance of indentations or damage on the surface of the steel truss due to excessive lifting pressure, thus protecting the structural integrity of the steel truss. At the same time, the washers 603 can also fill the small gaps between the nuts 602 and the surface of the steel truss, enhance the anti-loosening effect of the threaded connection, prevent the nuts 602 from loosening due to vibration during long-term use, and ensure the safety of lifting operations.

[0044] The usage and working principle of this device are as follows: During the installation of the lifting lug, hold the lifting lug body 3 and align the first T-shaped block 203 fixed on one side with the first T-shaped groove 202 on the top of the fixing block 201. Slowly push it in along the groove direction. During the process, the first wedge block 204 at the bottom of the first T-shaped block 203 will contact the inclined surface of the second wedge block 212. As the pushing force increases, the first wedge block 204 squeezes the second wedge block 212 and moves it into the fixing shell 206. Continue to push the first T-shaped block 203 until it is completely slid into the first T-shaped groove 202. At this time, the wedge grooves 205 on both sides of the first T-shaped block 203 are aligned with the position of the second wedge block 212. The return spring 213 releases its elastic force to push the slide plate 208 to return along the slide groove 207. The slide plate 208 drives the second wedge block 212 to be inserted into the wedge groove 205 through the connecting rod 209, thus completing the automatic fixing of the lifting lug body 3. Gently pull the lifting lug body 3 to confirm that there is no looseness.

[0045] During the hole adjustment stage, based on the spacing of the connecting holes of the steel truss girder to be hoisted, the rotating caps 404 on both sides of the base plate 1 are rotated, causing the bidirectional lead screw 402 to rotate within the second T-slot 401. Based on the thread transmission characteristics of the bidirectional lead screw 402, when the bidirectional lead screw 402 rotates, the two sections of threads on its outer surface drive the two second T-blocks 403 to slide in opposite directions, thereby causing the connecting seat 501 to adjust the spacing synchronously. Through the cooperation of the first pointer 503 and the first scale 502, the rotational motion of the lead screw is converted into a quantifiable linear displacement. Observe the first pointer 503 on the base plate 1 and the first scale 502 on one side of the connecting seat 501. When the first pointer 503 points to the target scale value (matching the spacing of the connecting holes of the steel truss girder), Stop rotating the rotating cap 404 to complete the precise adjustment of the spacing of the connecting seat 501. Then loosen the first fastening bolt 505 on one side of the connecting seat 501 so that the adjusting plate 504 can slide freely in the mounting groove. Then push the mounting plate 506 to move the adjusting plate 504 along the mounting groove. At the same time, observe the second pointer 508 on the mounting plate 506 and the second scale 509 on the connecting seat 501. When the second pointer 508 points to the scale that matches the lateral position of the steel truss connecting hole, stop pushing and tighten the first fastening bolt 505 to fix the adjusting plate 504 and the connecting seat 501, ensuring that the position of the mounting plate 506 does not shift. At this time, the positions of the four mounting holes 507 are completely aligned with the steel truss connecting holes.

[0046] During the fastening stage, the base plate 1 is attached to the preset connection surface of the steel truss beam, ensuring that the four mounting holes 507 are aligned with the four connection holes of the steel truss beam respectively. The second fastening bolt 601 is passed through the mounting hole 507 and the connection hole of the steel truss beam in sequence. A washer 603 is put on the other end of the second fastening bolt 601, and then the nut 602 is tightened. The four nuts 602 are tightened alternately with a wrench until the washer 603 is tightly attached to the surface of the steel truss beam.

[0047] During the hoisting preparation stage, after confirming that the lifting lug body 3, the hole adjustment structure, and the installation and fixing mechanism 6 are all securely connected, connect the hook of the hoisting equipment to the lifting ring of the lifting lug body 3, and the hoisting operation can be started.

[0048] During the steel truss separation and lifting lug disassembly stage, after the hoisting operation is completed, first unscrew the four nuts 602, remove the washers 603, and then pull the second fastening bolts 601 out of the mounting holes 507 and the steel truss connection holes to separate the base plate 1 from the steel truss. Then, pull the two pull rings 211 on the outside of the fixed shell 206, and drive the sliding plate 208 to move outward along the sliding groove 207 through the movable rod 210. The sliding plate 208 pulls the second wedge block 212 out of the wedge groove 205 through the connecting rod 209. At this time, the first T-block 203 is unlocked, and the lifting lug body 3 can be pulled out along the direction of the first T-groove 202.

[0049] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A detachable lifting lug structure for hoisting steel truss beams, characterized in that, Includes a base plate (1), a detachable mechanism (2) is provided on one side of the base plate (1), a lifting lug body (3) is provided on one side of the detachable mechanism (2), a driving mechanism (4) is provided on one side of the base plate (1), and a multi-dimensional hole position adaptive adjustment mechanism (5) is provided on one side of the driving mechanism (4). The multi-dimensional hole position adaptive adjustment mechanism (5) includes four connecting seats (501). The driving mechanism (4) is used to drive the four connecting seats (501) to move, thereby adjusting the spacing between the four connecting seats (501). Four first scales (502) are installed on one side of the four connecting seats (501). Two first pointers (503) are provided on one side of the base plate (1). Four mounting slots are opened on one side of the four connecting seats (501), and four adjusting plates are slidably installed in the four mounting slots. 504), four first fastening bolts (505) for fixing the four adjusting plates (504) are threaded to one side of the four connecting seats (501), four mounting plates (506) are fixedly connected to one side of the four adjusting plates (504), four mounting holes (507) are opened on one side of the four mounting plates (506), four second pointers (508) are installed on one side of the four mounting plates (506), and four second scales (509) are provided on one side of the four connecting seats (501).

2. The detachable lifting lug structure for hoisting steel truss beams according to claim 1, characterized in that: The detachable mechanism (2) includes a fixing block (201) fixedly connected to one side of the base plate (1), and the top of the fixing block (201) is provided with a first T-shaped groove (202).

3. The detachable lifting lug structure for hoisting steel truss beams according to claim 2, characterized in that: A first T-shaped block (203) is slidably connected in the first T-shaped groove (202), and the lifting lug body (3) is fixedly connected to one side of the first T-shaped block (203). Two first wedge blocks (204) are fixedly connected to the bottom of the first T-shaped block (203), and two wedge grooves (205) are opened on both sides of the first T-shaped block (203).

4. The detachable lifting lug structure for hoisting steel truss beams according to claim 2, characterized in that: The fixed block (201) has two fixed shells (206) fixedly connected to both sides. The inner sides of the two fixed shells (206) are provided with four sliding grooves (207), and two sliding plates (208) are slidably connected in the four sliding grooves (207).

5. A detachable lifting lug structure for hoisting steel truss beams according to claim 4, characterized in that: Two connecting rods (209) are fixedly connected to one side of the two slide plates (208), and two movable rods (210) are fixedly connected to the other side of the two slide plates (208).

6. The detachable lifting lug structure for hoisting steel truss beams according to claim 5, characterized in that: One end of each of the two movable rods (210) is movably inserted through the two fixed shells (206) and fixedly connected to two pull rings (211). One end of each of the two connecting rods (209) is movably inserted through the fixed block (201) and the first T-slot (202) and fixedly connected to two second wedge blocks (212). The two second wedge blocks (212) are adapted to the two wedge slots (205). Two return springs (213) are sleeved on the outer surface of the two movable rods (210).

7. A detachable lifting lug structure for hoisting steel truss beams according to claim 1, characterized in that: The drive mechanism (4) includes a second T-slot (401) opened on both sides of the base plate (1), and two bidirectional lead screws (402) are rotatably connected in the two second T-slots (401).

8. A detachable lifting lug structure for hoisting steel truss beams according to claim 7, characterized in that: The outer surfaces of the two bidirectional lead screws (402) are threaded with four second T-blocks (403), the four second T-blocks (403) are slidably connected in the two second T-slots (401), and four connecting seats (501) are fixedly connected to one side of the four second T-blocks (403).

9. A detachable lifting lug structure for hoisting steel truss beams according to claim 7, characterized in that: The smooth ends of the two bidirectional lead screws (402) are movably inserted through the two second T-slots (401) and extend to the outside of the base plate (1), and the smooth ends of the two bidirectional lead screws (402) are equipped with two rotating caps (404).

10. A detachable lifting lug structure for hoisting steel truss beams according to claim 1, characterized in that: An installation and fixing mechanism (6) is provided on the inner side of the four mounting holes (507). The installation and fixing mechanism (6) includes four second fastening bolts (601). Four nuts (602) are threaded on the outer surface of the four second fastening bolts (601). Four washers (603) are sleeved on the outer surface of the four second fastening bolts (601).

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