Lug mounting structure

Abstract

The utility model discloses a lifting lug mounting structure relates to lifting lug mounting technical field, lifting lug mounting structure includes lifting lug board, two threaded columns and two drive structure, wherein, the lifting lug board is provided with the connecting block in two sides of its thickness direction, each connecting block all is equipped with first threaded connecting hole, two threaded columns are set respectively to two connecting blocks, each threaded column can spiral activity along the height direction of lifting lug board, to have the connecting position and the avoidance position in its activity stroke, corresponding the connecting position, one end of threaded column is screwed in first threaded connecting hole, the other end of threaded column is used to screw in second threaded connecting hole on the piece of being hoisted and set up, corresponding the avoidance position. Through the adjustable connection of threaded column realizes the nondestructive dismounting, and meanwhile, threaded column and connecting block keep complete, can be repeatedly used in different beam body.

Description

Technical Field

[0001] This utility model relates to the technical field of lifting lug installation structure, and in particular to a lifting lug installation structure. Background Technology

[0002] To achieve efficient and high-performance beam construction, the construction industry commonly uses beams with lifting lugs. In the specific construction process, the beam is usually lifted as a whole by a tower crane to move it to the designated location. To facilitate the lifting of the beam, multiple lifting lugs are usually welded to the top of the beam. The tower crane moves the beam to the designated location by securing the lifting lugs with cables.

[0003] The lifting lugs that are directly welded to the top of the beam need to be cut off after the beam is hoisted, and the cut area needs to be ground. Therefore, the installation and disassembly of the lifting lugs takes a lot of time. Moreover, the welding and cutting process can easily damage the top of the beam, causing it to deform. Severe deformation can lead to the scrapping of the beam. Furthermore, the cut lifting lugs are difficult to reuse multiple times, which increases construction costs. Utility Model Content

[0004] The main purpose of this utility model is to propose a lifting lug installation structure, which aims to optimize the disassembly and assembly structure of the lifting lug, so that the lifting lug can be reused multiple times to reduce costs.

[0005] To achieve the above objectives, the lifting lug mounting structure proposed in this utility model includes:

[0006] The lifting lug plate has connecting blocks on both sides in the thickness direction, and each connecting block has a first threaded connection hole.

[0007] Two threaded posts are respectively provided for the two connecting blocks. Each threaded post can move helically along the height direction of the lifting lug plate, so that it has a connecting position and a clearance position within its moving stroke. Corresponding to the connecting position, one end of the threaded post is threadedly connected to the first threaded connecting hole, and the other end of the threaded post is threadedly connected to the second threaded connecting hole provided on the part to be lifted. Corresponding to the clearance position, all the threaded posts are located outside the first threaded connecting hole. Each threaded post has a mating groove.

[0008] Two drive structures are respectively provided for the two threaded columns. Each drive structure includes a rotating component and a drive protrusion. The rotating component has a linear travel along the height direction of the lifting lug plate and a rotational travel along the axis extending along the height direction of the lifting lug plate. The drive protrusion is provided on the rotating component and cooperates with the mating groove to convert the linear travel and rotational travel of the rotating component into the helical travel of the threaded column.

[0009] Preferably, the bottom of the connecting block is provided with a positioning groove for the positioning block provided on the part to be hoisted to be inserted, so as to restrict the placement position of the connecting block.

[0010] Preferably, a limiting component is provided inside the connecting block, the limiting component including a locking block, the locking block being inserted into the rotating member to limit the position of the rotating member.

[0011] Preferably, the limiting component further includes a first elastic element, one end of which is disposed in the connecting block and the other end is fixedly connected to the locking block to drive the locking block to move toward the rotating component.

[0012] Preferably, the side of the card block furthest from the first elastic member is arranged in an arc shape.

[0013] Preferably, an auxiliary plate is provided on the top of the rotating component to drive the rotating component to move.

[0014] Preferably, a sealing cover is detachably installed on the top of the connecting block, and the sealing cover covers the auxiliary plate to block rainwater.

[0015] Preferably, the connecting block is provided with an abutment component, which includes a plurality of abutment members, one end of which abuts against the outer periphery of the threaded post to restrict the rotation of the threaded post.

[0016] Preferably, the abutment component further includes:

[0017] Multiple pull rods are fixedly connected within the connecting block and are correspondingly arranged with each of the abutment members;

[0018] A limiting plate is installed between the pull rod and the abutment member; and,

[0019] The second elastic element has one end disposed in the limiting plate and the other end disposed in the connecting block to push the abutment element toward the threaded post.

[0020] Preferably, the end of the abutment facing the threaded post is provided with a buffer portion.

[0021] In the technical solution provided by this utility model, the two threaded posts are respectively set for the two connecting blocks. Each threaded post can move spirally along the height direction of the lifting lug plate, so that it has a connection position and a clearance position within its movement stroke. Corresponding to the connection position, one end of the threaded post is threadedly connected to the first threaded connection hole, and the other end of the threaded post is threadedly connected to the second threaded connection hole provided on the part to be lifted. Corresponding to the clearance position, all the threaded posts are located outside the first threaded connection hole. A mating groove is opened on each threaded post, and non-destructive assembly and disassembly are achieved through the adjustable connection of the threaded posts. Existing threaded connections require manual turning one turn at a time. This solution converts the linear downward pressure into rotational torque through a drive structure, and the connection can be completed with a single press. Traditional lifting lugs cannot be reused after being cut. The threaded posts and connecting blocks of this solution remain intact and can be reused for different beams. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 A perspective view of an embodiment of the lifting lug mounting structure provided by this utility model;

[0024] Figure 2 for Figure 1 A schematic diagram of the connection structure between the threaded column and the connecting block.

[0025] Explanation of icon numbers:

[0026] 1. Connecting block; 2. Lifting lug plate; 3. Auxiliary plate; 4. Positioning block; 5. Threaded column; 6. Drive structure; 61. Rotating component; 62. Drive protrusion; 7. Abutment assembly; 71. Limiting plate; 72. Second elastic component; 73. Pull rod; 74. Abutment component; 8. Limiting assembly; 81. First elastic component; 82. Locking block; 9. Sealing cover.

[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] 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.

[0029] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0030] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0031] This utility model provides a lifting lug installation structure. Figures 1 to 2 This is an embodiment of the lifting lug mounting structure provided by this utility model.

[0032] While welding can connect the lifting lugs to the beam, it requires cutting and grinding after installation, which is not only time-consuming but also prone to damaging the beam surface. The thermal stress generated during welding can cause localized deformation of the beam, potentially rendering the component unusable. Cut lifting lugs are structurally damaged and difficult to reuse, increasing construction costs. Traditional lifting lug installation methods suffer from low assembly / disassembly efficiency, high risk of component damage, and significant material waste.

[0033] Please refer to the following: Figures 1 to 2The lifting lug mounting structure includes a lifting lug plate 2, two threaded posts 5, and two driving structures 6. The lifting lug plate 2 has connecting blocks 1 on both sides in its thickness direction, and each connecting block 1 has a first threaded connection hole. The two threaded posts 5 are respectively positioned corresponding to two connecting blocks 1. Each threaded post 5 can move spirally along the height direction of the lifting lug plate 2, having a connection position and a clearance position within its movement stroke. Corresponding to the connection position, one end of the threaded post 5 is threaded into the first threaded connection hole, and the other end of the threaded post 5 is threaded into a second threaded connection hole on the part to be lifted. The threaded posts 5 are all located outside the first threaded connection hole, and each threaded post 5 has a mating groove. The two driving structures 6 are respectively arranged corresponding to the two threaded posts 5. Each driving structure 6 includes a rotating part 61 and a driving protrusion 62. The rotating part 61 has a linear travel along the height direction of the lifting lug 2 and a rotational travel along the axis extending along the height direction of the lifting lug 2. The driving protrusion 62 is provided on the rotating part 61 and cooperates with the mating groove to convert the linear travel and rotational travel of the rotating part 61 into the helical travel of the threaded post 5.

[0034] The connecting blocks 1 on both sides of the lifting lug plate 2 in the thickness direction refer to the protruding structures located on both sides of the plate body, which can be formed by casting or welding. The first threaded hole penetrates the connecting block 1, and the hole diameter matches the outer diameter of the threaded post 5. The helical stroke of the threaded post 5 refers to the path along the axis of the post during rotation, and the stroke length must cover the depth of the first threaded hole. The mating relationship between the driving protrusion 62 and the mating groove refers to the force transmission path formed after the protrusion is embedded in the groove, and torque transmission can be achieved by using a rectangular or trapezoidal cross section. The clearance position is defined as the state in which the threaded post 5 is completely disengaged from the first threaded hole, at which point the post body and the connecting block 1 are not in contact.

[0035] The connecting blocks 1 on both sides of the lifting lug 2 serve as the supporting base. The threaded column 5 connects to or disconnects from the second threaded hole of the beam through helical motion. During operation, the rotating part 61 of the drive structure 6 is pressed down and rotated, and the drive protrusion 62 pushes the threaded column 5 to rotate and move axially. When the rotating part 61 is in the initial position, the threaded column 5 is in a clearance position, which facilitates the positioning of the lifting lug 2 and the beam. During the downward pressing of the rotating part 61, the drive protrusion 62 drives the threaded column 5 to rotate, causing it to screw into the first and second threaded holes. During the reverse operation, the rotating part 61 is lifted and rotated in the opposite direction, and the threaded column 5 is disengaged from the connection state.

[0036] Therefore, in the technical solution provided by this utility model, the two threaded posts 5 are respectively set corresponding to the two connecting blocks 1. Each threaded post 5 can move spirally along the height direction of the lifting lug 2, so that it has a connection position and a clearance position within its movement stroke. Corresponding to the connection position, one end of the threaded post 5 is threadedly connected to the first threaded connection hole, and the other end of the threaded post 5 is threadedly connected to the second threaded connection hole provided on the part to be lifted. Corresponding to the clearance position, all the threaded posts 5 are located outside the first threaded connection hole. A mating groove is opened on each threaded post 5, and non-destructive assembly and disassembly are achieved through the adjustable connection of the threaded posts 5. Existing threaded connections require manual turning one turn at a time. This solution converts the linear downward pressure into rotational torque through the drive structure 6, and the connection can be completed with a single pressing action. Traditional lifting lugs cannot be reused after being cut. The threaded posts 5 and connecting blocks 1 of this solution remain intact and can be reused for different beams.

[0037] Traditionally, the installation of lifting lugs requires manual adjustment of the relative position of the connecting block 1 and the part to be lifted, which is time-consuming and makes it difficult to ensure the alignment accuracy of the threaded holes. In order to facilitate the positioning of the lifting lug plate 2, the installation position of the lifting lug plate 2 is changed.

[0038] Specifically, in an embodiment of this utility model, the bottom of the connecting block 1 is provided with a positioning groove for the positioning block 4 disposed on the part to be hoisted to insert into, so as to limit the placement position of the connecting block 1.

[0039] When connecting block 1 needs to be installed onto the surface of the part to be lifted, positioning block 4 is pre-fixed to the part. Connecting block 1 is inserted into positioning block 4 through the positioning groove at its bottom, preventing connecting block 1 from shifting horizontally. This insertion process ensures that the first threaded connection hole of connecting block 1 is coaxial with the second threaded connection hole of the part to be lifted, ensuring that the threaded post 5 can be accurately screwed in. After the lifting operation is completed, connecting block 1 can be vertically lifted to disengage positioning block 4 from the positioning groove, achieving quick disassembly. Through the mechanical insertion constraint between the positioning groove and positioning block 4, the placement position of connecting block 1 is pre-defined, reducing operational complexity and eliminating the problem of threaded post 5 not being able to be screwed in properly due to positional offset.

[0040] Restricting the movement of the rotating component 61 is also a feature of this invention. Specifically, in an embodiment of this invention, a limiting component 8 is provided inside the connecting block 1. The limiting component 8 includes a locking block 82, which is inserted into the rotating component 61 to restrict the position of the rotating component 61.

[0041] The limiting component 8 refers to a constraint mechanism installed inside the connecting block 1 to fix the position of the rotating component 61. Specifically, it can be implemented by using a metal block 82 with a plugging function. The block 82 interferes with the rotating component 61 through mechanical plugging. The plugging of the block 82 into the rotating component 61 means that the block 82 is inserted into a preset groove or hole in the rotating component 61 by matching its shape. Specifically, it can be implemented by using a rectangular boss to cooperate with the groove, thereby physically blocking and limiting the axial displacement of the rotating component 61.

[0042] When the drive structure 6 is not in operation, the locking block 82 is inserted into the corresponding slot of the rotating component 61, preventing the rotating component 61 from moving along the height direction or rotating around its axis. When it is necessary to adjust the position of the threaded post 5, external force is used to overcome the friction between the locking block 82 and the slot, causing the locking block 82 to disengage from the slot. At this time, the rotating component 61 can perform linear or rotational movements. After the drive operation is completed, the locking block 82 is reinserted into the slot, fixing the final position of the rotating component 61. Through the rigid engagement between the locking block 82 and the slot, the degree of freedom of the rotating component 61 is completely eliminated in the non-operating state, avoiding connection failure due to loosening.

[0043] Furthermore, the limiting component 8 also includes a first elastic element 81, one end of which is disposed in the connecting block 1 and the other end is fixedly connected to the locking block 82 to drive the locking block 82 to move toward the rotating component 61.

[0044] The first elastic element 81 refers to a component that can provide elastic force through its own deformation. Specifically, it can be implemented as a compression spring or an elastic rubber block. Its function is to push the locking block 82 to continuously adhere to the rotating component 61 through the elastic force, ensuring the limiting stability between the locking block 82 and the rotating component 61. The locking block 82 refers to a rigid component used to limit the position of the rotating component 61. Specifically, it can be formed by machining a metal block. Its function is to constrain the movement stroke of the rotating component 61 under the action of elastic force through the insertion and engagement with the rotating component 61.

[0045] The connecting block 1 has an internal cavity to accommodate the limiting component 8. One end of the first elastic element 81 is fixed to the inner wall of the connecting block 1, and the other end is rigidly connected to the locking block 82. When the rotating component 61 moves in a straight line or rotates around its axis, the locking block 82 remains in contact with the surface of the rotating component 61 under the push of the first elastic element 81. When the rotating component 61 moves to the position where it needs to be limited, the locking block 82 automatically engages in the positioning groove of the rotating component 61. At this time, the elastic force is converted into the holding force of the locking block 82, preventing the rotating component 61 from making unexpected displacements. When it is necessary to release the limit, the locking block 82 can be separated from the rotating component 61 by overcoming the elastic force through external operation. Through the cooperation of the elastic element and the locking block 82, the automatic reset function of the limiting structure is realized, and the continuous dependence on the operator is avoided, making the positioning process of the rotating component 61 more reliable.

[0046] Furthermore, the side of the card block 82 away from the first elastic member 81 is arranged in an arc shape.

[0047] The curved design refers to the curved profile on the surface of the locking block 82 away from the elastic element. This can be achieved using a circular arc or parabolic structure. The curved profile reduces the friction between the locking block 82 and the rotating element 61. This curved design acts as a guide in the limiting assembly 8, making the engagement between the locking block 82 and the rotating element 61 smoother and preventing the locking block 82 from getting stuck when inserting into or disengaging from the rotating element 61.

[0048] When the rotating component 61 moves linearly or rotationally, the arc-shaped side of the locking block 82 forms a sliding engagement with the contact surface of the rotating component 61. When the locking block 82 is pushed by the first elastic member 81 to contact the rotating component 61, the arc-shaped side can generate smooth sliding friction along the direction of movement of the rotating component 61, reducing the resistance of the contact surface. When it is necessary to release the limit, the reverse movement of the rotating component 61 guides the locking block 82 to gradually disengage through the arc-shaped side, avoiding vibration or wear caused by sudden disengagement. Through the arc-shaped side design, the coefficient of friction of the contact surface is effectively reduced, making the operation of the limiting component 8 more flexible and reliable, while reducing the risk of component wear.

[0049] Existing lifting lug installation structures typically require external tools to directly apply force to the rotating component 61, resulting in limited operating space and difficulty in applying force. However, by adding an auxiliary plate 3, operators can directly apply torque to the plate surface without relying on special tools, significantly reducing the difficulty of operation. Specifically, in the technical solution of this utility model, an auxiliary plate 3 is provided on the top of the rotating component 61 to drive the rotating component 61 to move.

[0050] Rotating component 61 refers to the part in the drive structure 6 capable of linear and rotational motion. Specifically, it can be implemented using a threaded rod or gear structure, converting the operation into the movement of the threaded column 5 through helical motion. Auxiliary plate 3 refers to the plate-like structure fixed to the top of rotating component 61. Specifically, it can be made of metal plate or high-strength plastic plate. By increasing the contact area, it facilitates the operator to apply rotational force, thereby improving the ease of operation.

[0051] The auxiliary plate 3 is mounted on top of the rotating component 61. When the position of the threaded column 5 needs to be adjusted, the operator can apply rotational force directly to the auxiliary plate 3 using a wrench or manually. The auxiliary plate 3 transmits the rotational force to the rotating component 61, causing it to rotate along its axis and move linearly along its height, thereby driving the threaded column 5 to complete its helical stroke. This design avoids the complex steps required to control the rotating component 61 separately using tools in traditional operations, simplifying the installation and disassembly process.

[0052] Furthermore, a sealing cover 9 is detachably installed on the top of the connecting block 1, and the sealing cover 9 covers the auxiliary plate 3 to block rainwater.

[0053] The sealing cover 9 is detachably installed on the top of the connecting block 1, which means that the sealing cover 9 and the connecting block 1 are connected by a detachable structure. Specifically, it can be achieved by threaded connection, snap-on connection or magnetic adsorption. The detachable structure facilitates the maintenance or replacement of the sealing cover 9. The sealing cover 9 covers the auxiliary plate 3, which means that the sealing cover 9 covers the outer area of ​​the auxiliary plate 3. Specifically, it can be designed so that the edge of the sealing cover 9 extends to the outside of the auxiliary plate 3. An active gap is maintained between the sealing cover 9 and the auxiliary plate 3. The covering structure can prevent external rainwater from seeping into the interior of the drive structure 6.

[0054] The sealing cover 9 is fixed to the top of the connecting block 1 via a threaded connection. After installation, it forms an internal space within which the auxiliary plate 3 is located. When the rotating component 61 is not in operation, the sealing cover 9 completely covers the auxiliary plate 3, preventing rainwater from seeping into the drive structure 6 through the gap between the auxiliary plate 3 and the connecting block 1. When the drive structure 6 needs to be operated, the sealing cover 9 can be removed, and the rotating component 61 can be driven to complete linear or rotational movements via the auxiliary plate 3. The gap between the sealing cover 9 and the auxiliary plate 3 can be adjusted according to actual working conditions, ensuring sealing while avoiding interference with the movement of the rotating component 61. By adding a removable sealing cover 9, the problem of rainwater infiltration causing component damage is solved without affecting the normal operation of the drive structure 6, improving the reliability of the lifting lug installation structure in humid environments.

[0055] In traditional lifting lug structures, the threaded post 5 is fixed solely by thread engagement, which is prone to loosening and falling off due to vibration or load fluctuations. By actively applying constraint force through the abutment component 7, the rotational freedom of the threaded post 5 is effectively suppressed without affecting its normal lifting and lowering. At the same time, the buffer part reduces the risk of wear during long-term use. Specifically, in the technical solution of this utility model, the connecting block 1 is provided with an abutment component 7, which includes multiple abutment members 74. One end of each abutment member 74 abuts against the outer periphery of the threaded post 5 to restrict the rotation of the threaded post 5.

[0056] The abutment component 7 refers to the structure set inside the connecting block 1 and applying constraint force to the threaded post 5 through multiple abutment parts 74. Specifically, it can be implemented using a block-shaped component made of elastic material, such as rubber or polyurethane, which generates contact pressure with the outer wall of the threaded post 5 through elastic deformation. The abutment part 74 refers to the component that directly contacts the outer surface of the threaded post 5. Specifically, it can be implemented using a metal or composite material block with an arc-shaped contact surface, such as a galvanized steel clamp block 82, which restricts the circumferential rotation of the threaded post 5 through friction. The buffer part refers to the flexible structure set at the contact end of the abutment part 74. Specifically, it can be implemented using a gasket made of rubber or silicone material, such as a vulcanized rubber gasket, which absorbs the impact force when the threaded post 5 rotates through elastic deformation.

[0057] When the threaded post 5 is screwed into the first threaded connection hole and reaches the connection position, multiple abutment members 74, under the action of elastic force, press tightly against the outer wall of the threaded post 5, restricting its independent rotation. The buffer part reduces the hard friction between the threaded post 5 and the abutment members 74 through flexible contact, avoiding surface wear. When the drive structure 6 drives the threaded post 5 to perform helical movement, the abutment members 74 allow the threaded post 5 to move in the height direction, but prevent it from rotating freely around the axis through continuous contact pressure, thereby maintaining the stability of the connection state.

[0058] Traditionally, the abutment 74 directly contacts the threaded post 5 with metal, which can easily lead to wear on the surface of the threaded post 5 or deformation of the abutment 74 due to friction after long-term use, affecting the limiting effect. This solution reduces the damage caused by rigid contact through a buffer part, extending the service life of the threaded post 5 and the abutment 74. At the same time, the elastic deformation of the buffer part adapts to the small displacement changes of the threaded post 5, improving the limiting stability. In the embodiment provided by this utility model, the abutment assembly 7 includes multiple pull rods 73, a limiting plate 71, and a second elastic element 72. The multiple pull rods 73 are fixedly connected in the connecting block 1 and are correspondingly arranged with each abutment 74. The limiting plate 71 is installed between the pull rods 73 and the abutment 74. One end of the second elastic element 72 is disposed in the limiting plate 71, and the other end is disposed in the connecting block 1 to push the abutment 74 toward the threaded post 5.

[0059] The tie rod 73 is a rod-shaped support component used to fix the internal structure of the connecting block 1. It can be made of metal threaded rod or fixed by welding. Its function is to provide a stable mounting base for the limiting plate 71. The limiting plate 71 is a plate-shaped component located between the tie rod 73 and the abutment 74. It can be made of steel plate or hard alloy material and cut to shape. Its function is to evenly transmit the thrust of the second elastic element 72 to the abutment 74. The second elastic element 72 is an element used to generate elastic thrust. It can be a helical spring or a compression rubber pad. Its function is to continuously apply pressure through elastic deformation, keeping the abutment 74 in contact with the threaded post 5.

[0060] When the threaded post 5 is in the connected position, the elastic force of the second elastic element 72 is transmitted to the abutment 74 through the limiting plate 71, causing the end of the abutment 74 to tightly abut against the outer circumference of the threaded post 5. When the threaded post 5 is subjected to an external rotational force, the friction between the abutment 74 and the threaded post 5 can effectively suppress its rotation, thereby maintaining the stability of the threaded post 5 in the connected position. When it is necessary to adjust the position of the threaded post 5, the external force can overcome the elastic force of the second elastic element 72, causing the abutment 74 to temporarily disengage, allowing the threaded post 5 to perform helical motion.

[0061] Furthermore, the end of the abutment 74 facing the threaded post 5 is provided with a buffer portion.

[0062] The buffer part refers to a flexible or elastic structure set at the end of the abutment 74 to absorb contact impact. Specifically, it can be made of rubber, silicone or polyurethane material covered or embedded at the end of the abutment 74. The buffer part can buffer the contact force through deformation when the abutment 74 contacts the threaded post 5, thereby reducing wear or damage caused by rigid collision.

[0063] When the threaded column 5 moves spirally along the height direction of the lifting lug plate 2, the abutment 74 continuously contacts the outer surface of the threaded column 5 through the buffer part. The buffer part absorbs the vibration or impact force generated during the rotation or movement of the threaded column 5 through its own elastic deformation, avoiding surface scratches or thread damage caused by hard contact between the abutment 74 and the threaded column 5. At the same time, the buffer part can increase the friction of the contact surface and help limit the unexpected rotation of the threaded column 5.

[0064] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. A lug mounting structure characterized by comprising: include: The lifting lug plate has connecting blocks on both sides in the thickness direction, and each connecting block has a first threaded connection hole. Two threaded posts are respectively provided for the two connecting blocks. Each threaded post can move helically along the height direction of the lifting lug plate, so that it has a connecting position and a clearance position within its moving stroke. Corresponding to the connecting position, one end of the threaded post is threadedly connected to the first threaded connecting hole, and the other end of the threaded post is threadedly connected to the second threaded connecting hole provided on the part to be lifted. Corresponding to the clearance position, all the threaded posts are located outside the first threaded connecting hole. Each threaded post has a mating groove. Two drive structures are respectively provided for the two threaded columns. Each drive structure includes a rotating component and a drive protrusion. The rotating component has a linear travel along the height direction of the lifting lug plate and a rotational travel along the axis extending along the height direction of the lifting lug plate. The drive protrusion is provided on the rotating component and cooperates with the mating groove to convert the linear travel and rotational travel of the rotating component into the helical travel of the threaded column.

2. The ear mounting structure according to claim 1, wherein The bottom of the connecting block is provided with a positioning groove for the positioning block to be inserted on the part to be hoisted, so as to restrict the placement position of the connecting block.

3. The ear mounting structure according to claim 1, wherein The connecting block is provided with a limiting component, which includes a locking block that is inserted into the rotating component to limit the position of the rotating component.

4. The lifting lug mounting structure as described in claim 3, characterized in that, The limiting component further includes a first elastic element, one end of which is disposed in the connecting block and the other end is fixedly connected to the locking block to drive the locking block to move toward the rotating component.

5. The ear mounting structure according to claim 4, wherein The card block is arranged in an arc shape on the side away from the first elastic member.

6. The ear mounting structure of claim 1, wherein An auxiliary plate is provided on the top of the rotating component to drive its movement.

7. The ear mounting structure according to claim 6, wherein A sealing cover is detachably installed on the top of the connecting block, and the sealing cover covers the auxiliary plate to block rainwater.

8. The lifting lug mounting structure as described in claim 1, characterized in that, The connecting block is provided with an abutment component, which includes multiple abutment members. One end of each abutment member abuts against the outer periphery of the threaded post to restrict the rotation of the threaded post.

9. The lifting lug mounting structure as described in claim 8, characterized in that, The abutment component also includes: Multiple pull rods are fixedly connected within the connecting block and are correspondingly arranged with each of the abutment members; A limiting plate is installed between the pull rod and the abutment member; and, The second elastic element has one end disposed in the limiting plate and the other end disposed in the connecting block to push the abutment element toward the threaded post.

10. The ear mounting structure according to claim 8, wherein The end of the abutment facing the threaded post is provided with a buffer portion.

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