Precast beam hoisting device
The precast beam lifting device designed with a combination of main trusses and secondary trusses solves the problems of small contact area, stress concentration and large shaking of traditional lifting devices in precast beam lifting, and achieves a stable and safe lifting effect.
Patent Information
- Application Number
- CN202422849896.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-10-14
- Estimated Expiration
- 2034-11-21
AI Technical Summary
When traditional lifting devices are used to lift prefabricated beams, there are problems such as small contact area between the wire rope and the prefabricated beam, stress concentration, large shaking, and high safety hazards.
The design adopts a combination of main trusses and multiple secondary trusses. The hangers and secondary trusses are connected by disassembly. The hangers include hangers, hooks and restraints to form a stable support structure. The lifting rings and hangers are fine-tuned through sliding connections to reduce stress concentration and contact area and improve stability.
It achieves stable lifting of prefabricated beams of different sizes and weights, reduces damage and shaking to the prefabricated beams, reduces safety hazards, and extends the service life of the lifting parts.
Smart Images
Figure CN223433145U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of beam hoisting, and in particular to a prefabricated beam hoisting device. Background Art
[0002] Precast concrete beams are typically processed at a precast beam yard before being transported to the construction site for bridge erection. The storage, transportation, and installation of precast box beams all involve hoisting. Due to their long span, large size, and heavy weight, hoisting is challenging, requiring specialized hoisting equipment to ensure safety and stability.
[0003] Traditional lifting construction usually uses connecting ropes to tie precast beams and then use lifting equipment to lift them. The contact area between the wire rope and the bottom of the precast beam is small, which is prone to stress concentration and damage to the contact surface and the concrete around it. The precast beam will inevitably shake during the lifting process, causing the wire rope and the box beam to slide or misalign with each other, which can easily cause wear of the connecting rope and pose a high safety hazard.
[0004] Therefore, a hoisting device is urgently needed to solve the above problems. Utility Model Content
[0005] The embodiment of the present application provides a precast beam hoisting device to ensure stable hoisting of precast beam bodies of different sizes.
[0006] To achieve the above objectives, this application provides the following technical solutions:
[0007] A prefabricated beam hoisting device comprises a main truss, a plurality of secondary trusses and a plurality of hanging parts;
[0008] The main truss is placed horizontally, and its top is fixedly connected to the output end of the external lifting system;
[0009] A plurality of the secondary trusses are spaced apart along the length direction of the main truss, and the tops of the secondary trusses are fixedly connected to the bottom of the main truss;
[0010] A plurality of hangers are arranged at intervals along the length direction of the corresponding secondary trusses, and the tops of the plurality of hangers are detachably connected to the bottoms of the corresponding secondary trusses, and the bottoms of the plurality of hangers are used for hanging the prefabricated beam body.
[0011] Furthermore, a plurality of lifting rings corresponding to the hanging pieces are provided on the top of the prefabricated beam body, one end of each of the lifting rings is fixedly connected to the top of the prefabricated beam body, and the other end thereof is connected to the corresponding hanging piece.
[0012] Furthermore, the hanging member includes a hanging rod, a hook and a restraining member;
[0013] One end of the suspender is detachably connected with the bottom of the corresponding sub-truss, and the other end thereof is vertically downwardly suspended;
[0014] One end of the suspender is detachably connected with the bottom of the corresponding sub-truss, and the other end thereof is vertically downwardly suspended;
[0015] The fixed end of the constraint member is fixedly connected with one end of the suspender away from the suspender, and the movable end of the constraint member passes through one end of the suspender close to the suspender and is slidably connected with the peripheral surface of the suspender to form a limiting cooperation;
[0016] The inner side surface of the constraint member abuts against the outer side surface of the suspender.
[0017] Further, the two ends of the suspender are provided with light holes for the constraint member to pass through, and the hole wall of the light hole is slidably connected with the outer wall of the constraint member.
[0018] Further, in the longitudinal section projection of the suspender, the two light holes are arranged in a high-low staggered manner, the inner wall of the light hole in the high position extends a check block from the wall surface in the radial direction thereof, and the top of the check block extends a check plate in the axial direction of the light hole.
[0019] Further, the side close to the suspender of the constraint member is provided with a sliding groove, the groove width of the sliding groove is greater than the width of the check block, a limiting block extends from the groove bottom to the groove opening in the sliding groove, and the side surface of the limiting block abuts against the side surface of the check block and the bottom end surface of the check plate.
[0020] The one or more technical solutions provided in the embodiment of the utility model have at least the following technical effects or advantages:
[0021] The combination design of the main truss and the plurality of sub-trusses makes the hoisting device in the utility model form a stable support structure. The detachable connection between the hoisting member and the sub-truss can conveniently adapt to prefabricated beam bodies of different sizes and weights. The hoisting force is dispersed by the plurality of hoisting members, thereby reducing the risk of stress concentration of the prefabricated beam body. Meanwhile, the contact area between the hoisting member and the prefabricated beam body is larger, which helps to reduce the damage to the prefabricated beam body and the surrounding concrete. BRIEF DESCRIPTION OF DRAWINGS
[0022] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the utility model or the prior art. Obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without any creative labor.
[0023] Figure 1 A schematic diagram of the structure in the assembled state provided by an embodiment of the present application;
[0024] Figure 2 A cross-sectional view of a hook provided in an embodiment of the present application;
[0025] Figure 3 for Figure 2 A partial enlarged view of the assembly restraint in area A;
[0026] Figure 4 A schematic diagram of the structure of the restraint member provided in an embodiment of the present application;
[0027] Figure 5 for Figure 4 Schematic diagram of the structure in side view.
[0028] Icons: 10-precast beam body; 11-lifting ring; 20-main truss; 21-secondary truss; 30-hanging rod; 31-hook; 311-light hole; 312-check block; 313-check plate; 32-restraint; 321-slide; 322-limit block. DETAILED DESCRIPTION
[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0030] In the description of the embodiments of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limitations on the present invention. The terms "first", "second" and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the internal parts of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to the specific circumstances.
[0031] Combining Figures 1-5 As shown in the drawings, a prefabricated beam hoisting device comprises a main truss 20, a plurality of auxiliary trusses 21 and a plurality of lifting members; the main truss 20 is horizontally placed, and the top thereof is fixedly connected with the output end of an external lifting system; the plurality of auxiliary trusses 21 are arranged along the length direction of the main truss 20, and the top of each auxiliary truss 21 is fixedly connected with the bottom of the main truss 20; the plurality of lifting members are arranged along the length direction of the corresponding auxiliary truss 21, and the top of each lifting member is detachably connected with the bottom of the corresponding auxiliary truss 21, and the bottom of each lifting member is used for hoisting a prefabricated beam body 10.
[0032] In the above scheme, the main truss 20 is horizontally placed, and the top thereof is fixedly connected with the output end (such as a crane hook 31 or a hoisting rigging) of an external lifting system; the plurality of auxiliary trusses 21 are arranged along the length direction of the main truss 20, and are connected with the bottom of the main truss 20 through fixed connection (such as welding, bolt connection, etc.). On the auxiliary truss 21, a plurality of lifting members are arranged along the length direction thereof, and the top of each lifting member is connected with the bottom of the corresponding auxiliary truss 21 through detachable connection (such as bolt, buckle, etc.). When the hoisting device in the present application is assembled, the external lifting system starts to work, and the whole hoisting device is lifted to a proper height through the main truss 20. At this time, the lifting members are above the prefabricated beam body 10. By adjusting the position and height of the lifting members, the lifting members are aligned with the hoisting points of the prefabricated beam body 10. Then, the prefabricated beam body 10 is connected with the lifting members by using appropriate hoisting tools (such as steel wire rope, lifting chain, etc.), and the prefabricated beam body 10 is slowly lifted to the required position. After the prefabricated beam body 10 is successfully hoisted to the designated position, the hoisting device is slowly lowered through the external lifting system. Then, the connection between the prefabricated beam body 10 and the lifting members is disconnected, and the lifting members are detached for next use. Finally, the whole hoisting device is removed from the site.
[0033] The hoisting device in the present application forms a stable support structure through the combination design of the main truss 20 and the plurality of auxiliary trusses 21. Since the detachable connection is adopted between the lifting members and the auxiliary trusses 21, the hoisting device can conveniently adapt to prefabricated beam bodies 10 of different sizes and weights. The lifting force is dispersed through the plurality of lifting members, reducing the risk of stress concentration of the prefabricated beam body 10. At the same time, the contact area between the lifting members and the prefabricated beam body 10 is larger, which helps to reduce the damage to the prefabricated beam body 10 and the surrounding concrete.
[0034] The top of the prefabricated beam body 10 is provided with a plurality of lifting rings 11 corresponding to the lifting members, one end of each of the plurality of lifting rings 11 is fixedly connected with the top of the prefabricated beam body 10, and the other end thereof is connected with the corresponding lifting member.
[0035] In the above scheme, the lifting ring 11 is fixedly installed on the top of the precast beam body 10 before the precast beam body 10 is processed and prepared for hoisting. After the hoisting device is assembled, the lifting member is adjusted to a position corresponding to the precast beam body 10. When the external lifting system starts to work, the entire hoisting device is lifted to an appropriate height by the main truss 20. After the precast beam body 10 is successfully hoisted to the designated position, the hoisting device is slowly lowered by the external lifting system. At this time, the connection between the precast beam body 10 and the lifting member can be disconnected, and the lifting member can be disassembled for next use.
[0036] The sliding connection between the lifting ring 11 and the lifting member in the present application allows fine adjustment of the position of the precast beam body 10 during hoisting, thereby improving the accuracy and stability of hoisting, and further reducing the shaking and sliding during hoisting, and reducing the safety hazard. Since the sliding connection between the lifting ring 11 and the lifting member has a certain adjustment range, it can better adapt to precast beam bodies 10 of different sizes and shapes, thereby improving the versatility and flexibility of the hoisting device.
[0037] The lifting member comprises a lifting rod 30, a lifting hook 31 and a restraint member 32; one end of the lifting rod 30 is detachably connected with the bottom of the corresponding auxiliary truss 21, and the other end thereof is vertically downwardly suspended; one end of the lifting hook 31 is fixedly connected with the end of the lifting rod 30 away from the auxiliary truss 21, and the other end thereof is upwardly tilted towards the side close to the lifting rod 30, forming a bending structure for limiting the displacement of the lifting ring 11; the fixed end of the restraint member 32 is fixedly connected with the end of the lifting hook 31 away from the lifting rod 30, and the movable end of the restraint member 32 passes through the end of the lifting hook 31 close to the lifting rod 30 and is in sliding connection with the peripheral surface of the lifting hook 31, forming a limiting fit; the inner side surface of the restraint member 32 abuts against the outer side surface of the lifting ring 11.
[0038] In the above scheme, the bending structure of the lifting hook 31 and the limiting fit of the restraint member 32 jointly limit the movement range of the lifting ring 11, thereby improving the stability of hoisting. This helps to reduce the shaking and sliding during hoisting, and reduces the safety hazard. Since the lifting ring 11 can slide and adjust the position within the restraint member 32, the lifting member can better adapt to precast beam bodies 10 of different sizes and shapes. The design of the lifting hook 31 and the restraint member 32 avoids damage to the precast beam body 10 caused by improper binding of the connecting rope in the traditional hoisting method, thereby reducing the impact and vibration on the precast beam body 10 during hoisting.
[0039] The lifting hook 31 has two ends provided with light holes 311 for the restraint member 32 to pass through, and the hole walls of the light holes 311 are in sliding connection with the outer walls of the restraint member 32.
[0040] The fixed end of the constraint member 32 is first fixed at the end of the hook 31 away from the suspender 30, and the movable end of the constraint member 32 is passed through the light hole 311 near the end of the suspender 30 and slides in the light hole 311. By adjusting the position of the constraint member 32 in the light hole 311, the fine adjustment of the lifting ring 11 can be conveniently realized, which not only simply and quickly adjusts the constraint range of the constraint member 32 to the lifting ring 11, but also does not require additional tools or equipment. The sliding connection of the light hole 311 and the outer wall of the constraint member 32 can reduce the friction and wear between them, thereby prolonging the service life of the lifting member.
[0041] In the longitudinal sectional projection of the hook 31, the two light holes 311 are arranged in high and low positions, and the inner wall of the light hole 311 in the high position extends a check block 312 from the wall surface in the radial direction thereof, and the top of the check block 312 extends a check plate 313 in the axial direction of the light hole 311.
[0042] In the above scheme, the fixed end of the constraint member 32 is first fixed at the end of the hook 31 away from the suspender 30, and the movable end is passed through the light hole 311 in the low position and slides in the light hole 311. When the movable end of the constraint member 32 slides to the high light hole 311, it is in contact with the peripheral surface of the check block 312. Since the check block 312 extends in the radial direction of the light hole 311, the movement of the constraint member 32 in the radial direction is limited, and at the same time, the top of the check plate 313 extends in the axial direction of the light hole 311 and abuts against the peripheral surface of the check block 312. The check plate 313 and the check block 312 can be implemented as an integral structure, which is in an L-shaped structure as a whole.
[0043] The design of the check block 312 and the check plate 313 in the present application effectively prevents the accidental falling of the constraint member 32 during hoisting, thereby improving the safety of hoisting. The design of the check block 312 and the check plate 313 reduces the friction and wear between the constraint member 32 and the hook 31, thereby prolonging the service life of the lifting member. The design of the high and low staggered light holes 311 makes the constraint member 32 more stable in the hook 31, avoids the phenomenon that the constraint member 32 and the hook 31 are separated or loose, thereby ensuring the stability of the lifting ring 11 and the precast beam body 10 during hoisting.
[0044] The side of the constraint member 32 near the lifting ring 11 is provided with a sliding groove 321, the groove width of the sliding groove 321 is greater than the width of the check block 312, and a limiting block 322 extends from the groove bottom to the groove opening in the sliding groove 321, and the side surface of the limiting block 322 abuts against the side surface of the check block 312 and the bottom end surface of the check plate 313.
[0045] In the above scheme, when the check plate 313 needs to be one-way locked, the side surface of the limiting block 322 abuts against the side surface of the check block 312 and the bottom end surface of the check plate 313, thereby limiting the displacement of the constraint member 32 in the X direction within the light hole 311 of the hook 31.
[0046] To prevent the swing and falling of the lifting ring 11 and ensure the stable hoisting of the precast beam, the hook 31 is in any one of C-shaped structure, J-shaped structure, U-shaped structure and V-shaped structure. Such arrangement is to ensure that the hook 31 is suitable for hoisting requirements in different scenarios, for example, the J-shaped hook 31 can be more suitable for scenarios requiring higher hoisting height, while the U-shaped or V-shaped hook 31 can be more suitable for scenarios requiring larger support surface; on the other hand, the C-shaped, J-shaped, U-shaped and V-shaped hook 31 structure is simple, easy to manufacture and process, and convenient for maintenance and repair, thereby reducing the use cost.
[0047] The various embodiments in the specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other, and each embodiment mainly explains the difference from other embodiments.
[0048] The above examples are only used to illustrate the technical solutions of the present application, and are not limited to the present application; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part or all of the technical features; and such modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the present application.
Claims
1. A prefabricated beam hoisting device, characterized in that: It comprises a main truss (20), a plurality of secondary trusses (21) and a plurality of hanging parts; The main truss (20) is placed horizontally, and its top is fixedly connected to the output end of the external lifting system; A plurality of the secondary trusses (21) are spaced apart along the length direction of the main truss (20), and the tops of the secondary trusses are fixedly connected to the bottom of the main truss (20); A plurality of hangers are arranged at intervals along the length direction of the corresponding secondary trusses (21), and the tops of the plurality of hangers are detachably connected to the bottoms of the corresponding secondary trusses (21), and the bottoms of the plurality of hangers are used for hanging the prefabricated beam body (10).
2. The prefabricated beam hoisting device according to claim 1, characterized in that: The top of the precast beam body (10) is provided with a plurality of lifting rings (11) corresponding to the lifting pieces, one end of each of the lifting rings (11) is fixedly connected to the top of the precast beam body (10), and the other end thereof is slidably connected to the corresponding lifting piece.
3. The prefabricated beam hoisting device according to claim 2, characterized in that: The hanging member includes a hanging rod (30), a hook (31) and a restraining member (32); One end of the suspension rod (30) is detachably connected to the bottom of the corresponding secondary truss (21), and the other end thereof is suspended vertically downward; One end of the hook (31) is fixedly connected to an end of the suspension rod (30) away from the secondary truss (21), and the other end thereof is tilted upward toward a side close to the suspension rod (30), forming a bending structure for limiting the displacement of the suspension ring (11); The fixed end of the restraining member (32) is fixedly connected to an end of the hook (31) away from the suspension rod (30), and the movable end of the restraining member (32) passes through an end of the hook (31) close to the suspension rod (30) and is slidably connected to the circumference of the suspension rod (30) to form a limited fit; The inner side surface of the restraining member (32) abuts against the outer side surface of the hanging ring (11).
4. The prefabricated beam hoisting device according to claim 3, characterized in that: Light holes (311) for the restraining member (32) to pass through are provided at both ends of the hook (31), and the hole wall of the light hole (311) is slidably connected to the outer wall of the restraining member (32).
5. The prefabricated beam hoisting device according to claim 4, characterized in that: In the longitudinal cross-sectional projection of the hook (31), the two light holes (311) are arranged in a staggered manner. A check block (312) extends from the inner wall of the light hole (311) in the higher position along its radial direction, and a check plate (313) extends from the top of the check block (312) along the axial direction of the light hole (311).
6. The prefabricated beam hoisting device according to claim 5, characterized in that: A sliding groove (321) is provided on one side of the restraining member (32) close to the lifting ring (11), the width of the sliding groove (321) is greater than the width of the check block (312), and a limiting block (322) extends from the bottom of the groove to the groove opening in the sliding groove (321), and the side surface of the limiting block (322) abuts against the side surface of the check block (312) and the bottom end surface of the check plate (313).
7. The prefabricated beam hoisting device according to claim 3, characterized in that: The hook (31) is any one of a C-shaped structure, a J-shaped structure, a U-shaped structure, and a V-shaped structure.