Concrete slab hoisting tool

Abstract

The utility model is suitable for concrete plate construction, and provides a concrete plate hoisting tool which comprises two main rods, the two main rods are symmetrically arranged and hinged to each other, and the two main rods are used for generating clamping force on a concrete plate during hoisting; the two hinge rods are respectively hinged to the bottom ends of the two main rods; and the two mounting rods are welded to the ends, away from the main rod, of the two hinge rods correspondingly, and clamp mechanisms are arranged on the two mounting rods and used for clamping concrete slabs during hoisting. According to the concrete plate hoisting tool provided by the scheme, the performance and practicability of the concrete plate hoisting tool are remarkably improved, the safety, stability and flexibility of the concrete plate hoisting tool are enhanced, great convenience is brought to concrete plate hoisting construction work, and the efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to concrete plate construction, in particular to a concrete plate hoisting tool. Background Art

[0002] With the continuous development and progress of construction technology, precast concrete panels have been widely used in the field of housing construction as an efficient, environmentally friendly and durable building material. This type of panel, with its excellent bearing capacity and stability, meets the needs of modern construction for high quality and high efficiency.

[0003] However, concrete slabs are also widely used in water conservancy irrigation projects, roads, municipal drainage projects, etc. For the hoisting of concrete slabs on the ground or on low platforms, hoisting tools are needed. Existing hoisting tools mainly hoist two hinged main rods, and the clamping force generated thereby makes the clamping block clamp the concrete slab. The relative friction between the gravity of the concrete slab and the clamping block increases the clamping force on the concrete slab, so that the concrete slab can be clamped and fixed, so that it can be hoisted.

[0004] Existing concrete slab lifting fixtures are mainly designed for vertically placed slabs. These fixtures can effectively clamp and fix the slabs in a vertical state. However, when dealing with slabs that need to be placed horizontally and are relatively thin, they are stretched to the limit. There is a risk of insufficient clamping force on the concrete slabs, which may cause them to fall. In practical applications, this limitation not only affects the construction efficiency, but also, in some cases, may pose a threat to the personal safety of workers. Therefore, it is necessary to improve the existing lifting fixtures so that they can adapt to the lifting needs of slabs in different placement states. Utility Model Content

[0005] In order to solve the technical problem that the existing lifting tools have insufficient clamping force and may cause the risk of falling when clamping and lifting a horizontally placed and relatively thin plate, the utility model provides a concrete plate lifting tool.

[0006] The utility model is implemented as follows: a concrete slab lifting tool comprises: two main rods, which are symmetrically arranged and hinged to each other, and are used to generate a clamping force on the concrete slab during lifting; two hinged rods respectively hinged to the bottom ends of the two main rods; two mounting rods respectively welded to one end of the two hinged rods away from the main rods, and both mounting rods are provided with a clamp mechanism for clamping the concrete slab during lifting; wherein the clamp mechanism comprises two vertical clamp assemblies and two horizontal clamp assemblies, the vertical clamp assemblies are used to clamp the vertically placed concrete slab during lifting, and the horizontal clamp assemblies are used to clamp the horizontally placed concrete slab during lifting.

[0007] Preferably, the vertical clamp assembly includes: a first connecting rod welded to the mounting rod; a first clamping block welded to one end of the first connecting rod, the first clamping block being L-shaped; a first rubber block fixedly mounted on one side of the first clamping block, the first rubber block being used to contact the concrete slab when clamping the vertically placed concrete slab.

[0008] Preferably, the horizontal clamp assembly includes: a second connecting rod welded to the mounting rod; a second clamping block welded to one end of the second connecting rod; and a second rubber block fixedly mounted on one side of the second clamping block, wherein the second rubber block and the second clamping block are both L-shaped, and the second rubber block is used to contact the concrete slab when clamping the horizontally placed concrete slab.

[0009] Preferably, a first half ring is welded on one side of the main rod, a tension spring is hung on the first half ring, and a second half ring is welded on the corresponding first clamp block and the second clamp block for hanging with one end of the tension spring to pull the first clamp block and / or the second clamp block.

[0010] Preferably, a plurality of adjustment holes are symmetrically provided on the two main rods for adjusting the distance between the two clamp assemblies according to the specifications of the concrete slab to be hoisted, and a main pin shaft is installed in a symmetrical group of adjustment holes on the two main rods for hinge connection between the two main rods, and a hexagonal nut is welded on one end of the main pin shaft, and two hand-tightened nuts are threadedly sleeved on the outer wall of the other end.

[0011] Preferably, the top ends of the two main rods are equipped with connecting pieces, both of which are H-shaped, and two hinge shafts are installed on the two connecting pieces. The main rods are rotatably sleeved on a hinge shaft and hinged with the connecting pieces, and the two connecting pieces are connected with the same iron chain.

[0012] Preferably, the first rubber block and the second rubber block are made of non-elastic rubber material, and the contact surfaces with the concrete slab are both subjected to anti-slip treatment.

[0013] Compared with the related art, the concrete slab lifting tool provided by the utility model has the following beneficial effects:

[0014] The design concept and practical application effect of the utility model both reflect its high attention to the safety and stability of hoisting; the clamp components and anti-slip treatment made of non-elastic rubber materials, as well as flexible H-shaped connectors and iron chains are used to facilitate the connection with the hoisting equipment, and the concrete plate hoisting tool of the utility model ensures that no matter what state the plate is placed in, it can provide sufficient clamping force, thereby greatly improving the safety and stability of the hoisting process;

[0015] At the same time, traditional lifting tools often have relatively single functions and lack sufficient adjustment and fixing functions, making it difficult to meet diverse lifting needs; the concrete slab lifting tool of the utility model uses ingenious designs, such as adjustment holes, main pin shafts, and hand-tightened nuts, so that the lifting tool can be adjusted and fixed according to different lifting needs; this adjustability and fixation not only improves the adaptability and flexibility of the lifting tool, but also makes the lifting process more efficient and convenient;

[0016] The utility model not only solves the problems existing in the prior art, but also significantly improves the construction efficiency and the safety of workers, and makes a positive contribution to the development of the field of hoisting operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the tool when hoisting a vertically placed concrete slab;

[0018] Figure 2 for Figure 1 An enlarged structural diagram of part A shown in FIG.

[0019] Figure 3 This is a schematic diagram of the structure of the tool when hoisting a horizontally placed concrete slab;

[0020] Figure 4 for Figure 3 An enlarged schematic diagram of the structure of part B shown in FIG.

[0021] Figure 5 It is a three-dimensional structural schematic diagram of the vertical clamp assembly in the utility model;

[0022] Figure 6 It is a structural schematic diagram of the main pin shaft and the hand-tightening nut in the utility model in the disassembled state;

[0023] Figure 7 It is a schematic diagram of the three-dimensional structure of the connecting piece in the utility model.

[0024] Figure numerals: 1. main rod; 2. hinged rod; 3. mounting rod; 4. first connecting rod; 5. first clamping block; 6. first rubber block; 7. second connecting rod; 8. second clamping block; 9. second rubber block; 10. first half ring; 11. tension spring; 12. second half ring; 13. adjustment hole; 14. main pin shaft; 15. hand-tightened nut; 16. connecting piece; 17. iron chain; 18. concrete plate. DETAILED DESCRIPTION

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification of this application and the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0026] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0027] The utility model provides a concrete plate lifting tool, such as Figure 1-7 As shown, the concrete slab lifting tool includes: two main rods 1, which are symmetrically arranged and hinged to each other, and are used to generate a clamping force on the concrete slab 18 during lifting; two hinged rods 2 respectively hinged at the bottom ends of the two main rods 1; two installation rods 3 respectively welded to the ends of the two hinged rods 2 away from the main rods 1, and the two installation rods 3 are provided with a clamp mechanism for clamping the concrete slab 18 during lifting; wherein the clamp mechanism includes two vertical clamp assemblies and two horizontal clamp assemblies, the vertical clamp assembly is used to clamp the vertically placed concrete slab 18 during lifting, and the horizontal clamp assembly is used to clamp the horizontally placed concrete slab 18 during lifting.

[0028] It should be noted that concrete slabs also play an indispensable role in many engineering fields such as water conservancy irrigation, road paving and municipal drainage. Since concrete slabs are heavy, they need to be hoisted with the help of lifting tools. These tools generally lift two mutually hinged main rods and use the generated clamping force to make the clamps tightly clamp the concrete slabs. As the gravity of the slabs acts, the friction between the clamps and the slabs will increase, further enhancing the clamping force and ensuring the stable lifting of the slabs. Although the existing concrete slab lifting fixtures perform well in the lifting of vertically placed slabs, they are not suitable for horizontally placed slabs with thin thickness. However, when lifting plates, they often seem powerless; due to insufficient clamping force, these plates are at risk of falling during the lifting process, which not only affects the construction efficiency, but also poses a serious threat to the safety of workers; therefore, in order to improve construction efficiency and ensure the safety of workers, it is particularly important to improve and innovate the existing lifting fixtures; through optimized design, the new lifting fixture needs to be able to adapt to the lifting needs of plates in different placement states, especially for those plates that need to be placed horizontally and are thinner, it should be able to provide sufficient clamping force to ensure the stability and safety of the lifting; this will be an important direction and challenge for the design of lifting fixtures.

[0029] The lifting tool in this scheme mainly includes two main rods 1, which are symmetrically arranged and hinged to each other. When lifting, they can generate a clamping force on the concrete slab. In addition, a hinged rod 2 is hinged at the bottom end of each main rod, and a mounting rod 3 is welded to the end of each hinged rod 2 away from the main rod 1. Both mounting rods 3 are provided with clamping mechanisms, which are responsible for clamping the concrete slab during the lifting process. It is important that this clamping mechanism is designed to be quite flexible and comprehensive. It includes two vertical clamp assemblies and two horizontal clamp assemblies. The vertical clamp assembly is specifically used to clamp vertically placed concrete slabs, while the horizontal clamp assembly is used to clamp horizontally placed concrete slabs, especially those with thinner thickness. This design ensures that the lifting tool can provide sufficient clamping force regardless of the placement state of the slab, thereby greatly improving the safety and stability of the lifting process. By adopting this new type of lifting tool, not only can the problems existing in the prior art be solved, but also the construction efficiency can be significantly improved while ensuring the safety of workers.

[0030] In a further preferred embodiment of the utility model, the vertical clamp assembly includes: a first connecting rod 4 welded to the mounting rod 3; a first clamping block 5 welded to one end of the first connecting rod 4, the first clamping block 5 is L-shaped; a first rubber block 6 fixedly mounted on one side of the first clamping block 5, the first rubber block 6 is used to contact the concrete slab 18 when clamping the vertically placed concrete slab 18.

[0031] In this embodiment, the vertical clamp assembly includes a first connecting rod 4, a first clamping block 5 and a first rubber block 6. The first connecting rod 4 is firmly welded to the mounting rod 3 as the support and foundation of the entire vertical clamp assembly. The first clamping block 5 is welded to one end of the first connecting rod 4. The first rubber block 6 is fixedly mounted on one side of the first clamping block 5, which can provide sufficient friction when clamping the concrete plate 18 to ensure the stability and fixity of the plate. At the same time, the first rubber block 6 can also effectively reduce the damage to the surface of the plate, protect the integrity and aesthetics of the plate, and the first clamping block 5 presents an L-shaped structure, which can also effectively support the first rubber block 6, further enhancing the safety of the hoisting. The assembly also has the advantages of simple structure, convenient operation, low maintenance cost, etc., and has high practicality and promotion value.

[0032] In a further preferred embodiment of the utility model, the horizontal clamp assembly includes: a second connecting rod 7 welded to the mounting rod 3; a second clamping block 8 welded to one end of the second connecting rod 7; a second rubber block 9 fixedly mounted on one side of the second clamping block 8, the second rubber block 9 and the second clamping block 8 are both L-shaped, and the second rubber block 9 is used to contact the concrete slab 18 when clamping the horizontally placed concrete slab 18.

[0033] In this embodiment, the horizontal clamp assembly includes a second connecting rod 7, a second clamp block 8 and a second rubber block 9. The second connecting rod 7 is firmly welded to the mounting rod 3, providing a solid foundation for the entire horizontal clamp assembly, and the second clamp block 8 is welded to one end of the second connecting rod 7. The second rubber block 9 is fixedly mounted on one side of the second clamp block 8 and forms an L-shaped structure together with the second connecting rod 7. This design enables the clamp block to fit tightly against the horizontally placed concrete plate, providing clamping force, and to support the bottom of the concrete plate 18 to a certain extent, preventing the plate from sliding or falling off during the hoisting process. Similarly, the second rubber block 9 can also effectively reduce damage to the surface of the plate, protecting the integrity and aesthetics of the plate. The design of this horizontal clamp assembly fully considers multiple aspects such as clamping force, stability and safety, and can effectively solve the problems existing in existing hoisting tools when clamping horizontally placed concrete plates, ensuring the integrity of the concrete plate 18 and the safety of workers.

[0034] In a further preferred embodiment of the utility model, a first half ring 10 is welded to one side of the main rod 1, and a tension spring 11 is hung on the first half ring 10. A second half ring 12 is welded to the corresponding first clamp block 5 and the second clamp block 8, which is used to be hung with one end of the tension spring 11 to pull the first clamp block 5 and / or the second clamp block 8.

[0035] In this embodiment, in order to facilitate the use of the clamp mechanism, a tension spring 11 and a half-ring structure are specially introduced. When the lifting tool needs to lift a batch of vertically placed concrete plates during construction, the tension spring 11 is hung on the second half-ring 12 on the first clamp block 5, and the clamp mechanism is pulled up so that it will not rotate to the bottom of the main rod 1 due to gravity. In this way, when lifting the vertically placed plates one by one, there is no need to manually adjust the clamp mechanism; when the lifting tool needs to lift a batch of horizontally placed concrete plates during construction, the tension spring 11 is hung on the second half-ring 12 on the second clamp block 8, and the clamp mechanism is pulled up so that it will not rotate to the bottom of the main rod 1 due to gravity. In this way, when lifting the horizontally placed plates one by one, there is no need to manually adjust the clamp mechanism. This design method effectively improves the efficiency of lifting a batch of plates one by one.

[0036] In a further preferred embodiment of the utility model, a plurality of adjustment holes 13 are symmetrically provided on the two main rods 1 for adjusting the distance between the two clamp assemblies according to the specifications of the concrete slab 18 to be hoisted, and a main pin shaft 14 is installed in a symmetrical group of adjustment holes 13 on the two main rods 1 for hinge connection between the two main rods 1, and a hexagonal nut is welded at one end of the main pin shaft 14, and two hand-tightened nuts 15 are threadedly sleeved on the outer wall of the other end.

[0037] In this embodiment, in order to enhance the adaptability and flexibility of the hoisting tool, a plurality of adjustment holes 13 are symmetrically opened on the two main rods 1. These adjustment holes 13 allow the user to adjust the distance between the two clamp assemblies according to the specific specifications of the concrete slab 18 to be hoisted. In this way, both large and small slabs can be properly clamped and hoisted. In order to realize the hinge between the two main rods 1, a main pin 14 is installed in the two symmetrical adjustment holes 13. The main pin 14 not only connects the two main rods 1, but also enables the two main rods 1 to rotate relative to each other during hoisting. In order to facilitate user adjustment and operation, a hexagonal nut is welded on one end of the main pin 14, and two hand nuts 15 are threadedly sleeved on the outer wall of the other end. By rotating the hand nuts 15, the user can easily fix or loosen the main pin 14, thereby adjusting the relative position of the two main rods 1, thereby adjusting the distance between the clamp assemblies. This design not only improves the adaptability and flexibility of the hoisting tool, but also makes the operation easier and faster.

[0038] In a further preferred embodiment of the utility model, the top ends of the two main rods 1 are equipped with connecting pieces 16, both of the two connecting pieces 16 are H-shaped, and two hinge shafts are installed on the two connecting pieces 16. The main rod 1 is rotatably sleeved on a hinge shaft and hinged with the connecting piece 16, and the two connecting pieces 16 are connected to the same iron chain 17.

[0039] In this embodiment, an H-shaped connecting member 16 can be set, and two hinge shafts are installed on the connecting member 16 to realize the connection between the main rod 1 and the chain 17. The hook of the lifting equipment can be directly hung on the two rings in the middle of the chain 17 for lifting, which is more convenient and makes the whole lifting process more efficient and convenient.

[0040] In a further preferred embodiment of the present invention, the first rubber block 6 and the second rubber block 9 are made of non-elastic rubber material, and the contact surfaces with the concrete plate 18 are both subjected to anti-slip treatment.

[0041] In this embodiment, in order to enhance the friction and anti-skid performance between the clamping mechanism and the concrete plate, a non-elastic rubber material is specially selected to make the first rubber block 6 and the second rubber block 9. Compared with the traditional elastic rubber, the non-elastic rubber has better wear resistance and anti-aging performance, and can maintain stable performance during long-term use. In addition, in order to further improve the anti-skid effect, the contact surface between the first rubber block 6 and the second rubber block 9 and the concrete plate 18 is specially anti-skid treated. This anti-skid treatment can increase the friction between the rubber block and the concrete plate, and effectively prevent accidents caused by sliding during the lifting process. By selecting a non-elastic rubber material and performing an anti-skid treatment, this embodiment further enhances the clamping force and anti-skid performance of the concrete plate lifting tool, providing a more reliable guarantee for the safety and efficiency of the lifting operation.

[0042] In summary, the optimized design of the utility model significantly improves the performance and practicality of the concrete slab lifting tools, enhances the safety, stability and flexibility of the concrete slab lifting tools, and brings great convenience and benefits to the construction work.

[0043] Compared with the related art, the utility model ensures that the hoisting tool can provide sufficient clamping force no matter what state the plate is placed in, thereby greatly improving the safety and stability of the hoisting process. By adopting this new hoisting tool, not only can the problems existing in the prior art be solved, but also the construction efficiency can be significantly improved, while ensuring the safety of workers;

[0044] The concrete slab lifting tool of the utility model can be adjusted and fixed according to different lifting requirements, while traditional lifting tools often have relatively single functions, lack sufficient adjustment and fixing functions, and are difficult to meet diverse lifting requirements.

[0045] In the several embodiments provided in the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only schematic, such as the division of the above-mentioned units, which is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunication or other forms.

[0046] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A concrete slab lifting tool, characterized in that: include: The main rods are symmetrically arranged and hinged to generate a clamping force on the concrete slab during lifting; Two hinged rods respectively hinged to the bottom ends of the two main rods; Two mounting rods are respectively welded to the ends of the two hinged rods away from the main rod, and the two mounting rods are both provided with a clamp mechanism for clamping the concrete slab during hoisting; The clamp mechanism includes two vertical clamp assemblies and two horizontal clamp assemblies. The vertical clamp assemblies are used to clamp the vertically placed concrete slabs during hoisting, and the horizontal clamp assemblies are used to clamp the horizontally placed concrete slabs during hoisting.

2. The concrete slab lifting tool according to claim 1, characterized in that: The vertical clamp assembly comprises: a first connecting rod welded to the mounting rod; A first clamping block welded to one end of the first connecting rod, wherein the first clamping block is L-shaped; A first rubber block is fixedly mounted on one side of the first clamping block, and the first rubber block is used to contact the concrete slab when clamping the vertically placed concrete slab.

3. The concrete slab lifting tool according to claim 2, characterized in that: The horizontal clamp assembly comprises: a second connecting rod welded to the mounting rod; A second clamping block welded to one end of the second connecting rod; A second rubber block is fixedly mounted on one side of the second clamping block, the second rubber block and the second clamping block are both L-shaped, and the second rubber block is used to contact the concrete slab when clamping the horizontally placed concrete slab.

4. The concrete slab lifting tool according to claim 1, characterized in that: A first half ring is welded on one side of the main rod, and a tension spring is hung on the first half ring. A second half ring is welded on the corresponding first clamp block and the second clamp block for hanging with one end of the tension spring to pull the first clamp block and / or the second clamp block.

5. The concrete slab lifting tool according to claim 1, characterized in that: A plurality of adjustment holes are symmetrically provided on the two main rods for adjusting the distance between the two clamp assemblies according to the specifications of the concrete slab to be hoisted. A main pin shaft is installed in a group of symmetrical adjustment holes on the two main rods for hinge connection between the two main rods. A hexagonal nut is welded on one end of the main pin shaft, and two hand-tightened nuts are threadedly sleeved on the outer wall of the other end.

6. The concrete slab lifting tool according to claim 1, characterized in that: The top ends of the two main rods are equipped with connecting pieces, both of which are H-shaped, and two hinge shafts are installed on the two connecting pieces. The main rod is rotatably sleeved on a hinge shaft and hinged with the connecting piece, and the two connecting pieces are connected with the same iron chain.

7. The concrete slab lifting tool according to claim 3, characterized in that: The first rubber block and the second rubber block are made of non-elastic rubber material, and the contact surfaces with the concrete plate are both anti-slip treated.

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