Elevator lifting hook assembly

Abstract

The utility model provides an elevator lifting hook assembly and relates to the technical field of elevator equipment. The lifting hook assembly comprises a steel beam, a connecting piece and a lifting hook, a web on the steel beam is provided with a hole, a bottom stiffening rib at the hole is connected with the connecting piece, and the lifting hook is stressed and transmits force to the connecting piece and the steel beam; the connecting piece and the steel beam can be mechanically connected on site without welding, a welding seam is prevented from being directly pulled and sheared, the connecting reliability of the lifting hook and the steel beam is improved, the connecting piece does not need to be fixed in a concrete slab or on an upper flange, and the connecting piece can adapt to various scenes and is flexible and convenient to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator equipment, in particular to an elevator hook assembly. Background Art

[0002] In recent years, with the development of social economy, vertical lifts are increasingly used in civil buildings. In shopping malls and scenic spots, multiple sets of vertical lifts are usually installed. Steel structure is a common elevator support structure due to its convenient construction. Before the installation of the elevator, the top of the elevator shaft needs to be installed with a hook steel beam and hook for elevator installation and maintenance. Therefore, the connection design between the steel beam and the elevator hook is very critical.

[0003] At present, there are no standard nodes given in the specifications and drawings for the connection method and fixing device between the steel beam and the elevator hook. The current common practices and disadvantages are as follows: In the first case, the hook is directly welded to the steel beam. During the installation of the elevator, the weld is directly subjected to tension and shear, and it is easy for the weld to break. In addition, the quality of the weld is not easy to ensure during the construction process. If the weld is not full, safety cannot be guaranteed. In the second case, the hook fixing device is partially fixed in the concrete slab. This practice is prone to limit the usage scenarios and make replacement difficult in the later stage.

[0004] The Chinese utility model patent with application number CN218024832U discloses a hook structure at the top of a steel structure elevator shaft, including: a hook plate, a stiffening plate and a steel beam, wherein the hook plate is arranged on the lower flange of the steel beam, and the stiffening plate is connected to the side of the hook plate and the lower flange of the steel beam respectively. By adopting the integral welding of the hook plate and the stiffening plate with the steel beam to transfer the hook load, compared with the traditional elevator hook structure, the local stress concentration on the lower flange of the steel beam can be reduced, and the stress distribution can be more uniform. However, during the installation of the elevator, the weld is directly subjected to tension and shear, and it is easy for the weld to break. The quality of the weld is not easy to guarantee during the construction process. If the weld is not full, the safety cannot be guaranteed.

[0005] The Chinese utility model patent with application number CN217947299U discloses a pre-buried elevator hook structure in the slab, in which the steel anchor plate, straight anchor bars, support bars and the upper part of the hook are directly cast in the concrete slab. There is a certain thickness of concrete protective layer on the top of the steel anchor plate to ensure the durability of the structure, but it means that the elevator hook needs to be installed before the concrete slab is cast, which is not suitable for installation scenarios where the concrete slab has been cast or there is no concrete floor.

[0006] A Chinese utility model patent with application number CN203008187U discloses an elevator hook structure, wherein the hook is U-shaped and characterized in that a steel plate is welded to the top of the U-shaped hook; it also includes a concrete plate, and the steel plate and the upper half of the hook are embedded and fixed in the concrete plate. Because they are embedded in the concrete plate, once there is a problem with the hook or steel plate in the design, it will be very difficult to replace it. In addition, there is a significant difference in linear expansion coefficients between concrete and steel, and thermal expansion and contraction between different materials may produce stress, thereby causing damage or cracks.

[0007] In view of the shortcomings of existing elevator hooks, the utility model discloses an elevator hook assembly, in which the hook connecting piece and the steel beam are mechanically connected without welding, thus avoiding direct tension and shearing of the weld, improving the reliability of the connection between the hook and the steel beam. Since the connecting piece is arranged in the web, it does not need to be fixed in the concrete slab or on the upper flange, so it can adapt to a variety of scenarios and is flexible and convenient to operate. Utility Model Content

[0008] In view of this, an embodiment of the present application provides an elevator hook assembly to solve the safety hazards and installation scenario limitations of welding fixation. The embodiment of the present application provides the following technical solutions:

[0009] On the one hand, an embodiment of the present application provides an elevator hook assembly, comprising a steel beam, a connecting piece and a hook, wherein: the steel beam comprises an upper flange, a web and a lower flange; the connecting piece is an angle steel, comprising a transverse flange and a vertical flange; the hook is a U-shaped hook, comprising a vertical section and a transverse section;

[0010] The web is provided with a hole, the hole is provided with a bottom stiffening rib, and the bottom stiffening rib is provided with at least two holes; the transverse flange is provided with at least four holes, including at least two fixing holes and two connecting holes; the steel beam and the connecting member are fixedly connected at the bottom stiffening rib, and the connecting member and the hook are fixedly connected at the connecting holes.

[0011] Furthermore, the opening of the web is provided with stiffening ribs around all four sides.

[0012] Furthermore, the steel beam and the stiffening rib are fixed by welding.

[0013] Furthermore, the fixing hole is located in the middle of the transverse flange of the connecting member and corresponds to the opening of the bottom stiffening rib.

[0014] Furthermore, the opening of the bottom stiffening rib is fixed to the fixing hole of the connecting member by bolt connection.

[0015] Furthermore, the connecting holes are located at both ends of the transverse flanges of the connecting member and correspond to the vertical sections of the hook.

[0016] Furthermore, the vertical section of the hook passes through the connecting hole and is fixed to the connecting piece using a double nut.

[0017] Furthermore, the transverse section of the hook is located below the lower flange of the steel beam.

[0018] Furthermore, the cross-section of the steel beam is I-shaped.

[0019] Furthermore, the hook is made of Q235B round steel bent into a U shape.

[0020] Compared with the prior art, the at least one technical solution adopted in the embodiment of the present application can achieve the following beneficial effects:

[0021] The utility model adopts mechanical connection between the connecting piece of an elevator hook assembly and the steel beam without welding, thus avoiding direct tension and shearing of the weld, and also avoiding thermal deformation and welding cracks on the components, while avoiding residual stress and potential safety hazards, thus improving the reliability of the connection between the hook and the steel beam, and being easy to install and replace, and having strong adaptability;

[0022] The utility model provides an elevator hook assembly with a connecting piece arranged in the web of a steel beam, which does not need to be fixed in a concrete slab or on the upper flange of a steel beam, and is adaptable to various scenarios and is flexible and convenient to operate.

[0023] In one embodiment of the utility model, a hook assembly for an elevator is provided with stiffening ribs around the opening of the web of the steel beam to reinforce the weakened part of the opening, bear the shear force of the web opening part, enhance the strength and rigidity of the beam, make it more able to bear uneven loads, and improve stability;

[0024] In one embodiment of the utility model, a fixing hole of an elevator hook assembly is located in the middle of the transverse flange of the connecting member, and corresponds to the opening of the bottom stiffening rib, and is fixed by bolt connection to ensure that the fitting between the connecting member and the stiffening rib is tighter, avoiding or reducing the bending moment caused by the offset of stress, and also improving the stability of the entire structure;

[0025] In an embodiment of an elevator hook assembly of the utility model, connecting holes are located at both ends of the transverse flange of the connecting piece and correspond to the vertical section of the hook. The vertical section of the hook passes through the connecting holes and is fixed to the connecting piece using double nuts, so that the force is directly transmitted to the transverse flange, the torque is reduced, and the force-bearing structure is optimized. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 This is a structural schematic diagram of a first embodiment of an elevator hook assembly of the utility model;

[0028] Figure 2 It is a structural schematic diagram of a steel beam web opening of an elevator hook assembly of the utility model;

[0029] Figure 3 It is an enlarged structural diagram of a connecting piece of an elevator hook assembly of the utility model;

[0030] Figure 4 It is a structural schematic diagram of a second embodiment of an elevator hook assembly of the utility model.

[0031] Markings in the figure: 1. Steel beam, 11. Upper flange, 12. Web, 121. Opening, 122. Bottom stiffener, 123. Hole position, 13. Lower flange, 2. Connector, 21. Fixing hole, 22. Connecting hole, 3. Hook. DETAILED DESCRIPTION

[0032] The embodiments of the utility model are described in detail below with reference to the accompanying drawings.

[0033] The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0034] In the description of this article, the two parts of the angle steel with a shape of 90 degrees are called transverse flange and vertical flange. The transverse flange is the side of the angle steel parallel to the reference plane. In many cases, the transverse flange will be welded or connected with other structural elements (such as flange plates or steel beams) to form a composite structure to increase its bearing capacity and stiffness; the vertical flange is the side of the angle steel perpendicular to the reference plane. In structural design, the role of the vertical flange is usually to help resist bending or torsion caused by loads. When the vertical flange and transverse flange of the angle steel work together, they can significantly increase the performance of the structure and provide sufficient strength and stability.

[0035] In the description of this article, stiffeners are an important structure designed to enhance the bearing capacity of beams and prevent bending and deformation. Stiffeners are usually made of the same steel as the steel beams hung by elevator hooks, providing sufficient strength and hardness. Stiffeners are most commonly installed at key stress points of the beams to maximize the strength of the beams and resist bending. In this application, stiffeners are also used to reinforce the web openings to bear the shear force that the openings should bear.

[0036] On the one hand, the embodiment of the present application provides an elevator hook 3 component, such as Figure 1 The utility model is a structural schematic diagram of an elevator hook 3 assembly, comprising a steel beam 1, a connecting member 2 and a hook 3, wherein: the steel beam 1 comprises an upper flange 11, a web 12 and a lower flange 13; the connecting member 2 is an angle steel, comprising a transverse flange and a vertical flange; the hook 3 is a U-shaped hook 3, comprising a vertical section and a transverse section;

[0037] like Figure 2 As shown in the structural schematic diagram of the openings in the web 12 of a steel beam 1 of an elevator hook 3 assembly of the utility model, the web 12 of the steel beam 1 is provided with a hole 121, the hole 121 is provided with a bottom stiffening rib 122, and the bottom stiffening rib 122 is provided with at least two hole positions 123; the transverse flange of the connecting member 2 is provided with at least four openings, including at least two fixing holes 21 and two connecting holes 22; the steel beam 1 and the connecting member 2 are fixedly connected at the bottom stiffening rib 122, and the connecting member 2 and the hook 3 are fixedly connected at the connecting holes 22.

[0038] In this embodiment, the connection between the steel beam 1, the connector 2 and the hook 3 is a mechanical connection, such as bolts or rivets. The beneficial effects of this connection method are as follows: 1. Easy to install and replace. If the connector 2 is worn or needs to be upgraded and modified, the old one can be easily removed and then the new one can be reinstalled, while the welded hook 3 may be difficult to remove; 2. Avoid changes in material properties caused by welding. The mechanical connection will not change the metal structure of the steel beam 1; 3. The mechanical connection method is not demanding on the environment, does not require power, is easier to operate on site, and has strong adaptability. Considering that the weld is directly subjected to tension and shear during the installation of the elevator, it is easy for the weld to break. The quality of the weld is not easy to guarantee during the construction process. If the weld is not full, safety cannot be guaranteed. Therefore, the hook 3 is connected to the steel beam 1 by mechanical connection in the force direction, which is more reliable.

[0039] Specifically, possible mechanical connections are as follows: 1. Bolt connection: holes are drilled on the steel beam 1 and the stiffening rib, and then bolts and nuts are used to connect. This method is relatively easy to install and disassemble and has high flexibility; 2. Rivet connection provides higher strength and rigidity, but installation and disassembly are more complicated than bolt connection; 3. Pin connection is similar to bolt connection, except that the bolts are replaced with pins, and then the pins are fixed in the pre-drilled holes in the stiffening ribs with appropriate tools; 4. For some special structural steels, the stiffening ribs can also be bonded to the web 12 using special structural adhesives to provide good structural performance. However, although this method does not require welding or drilling, environmental factors and adhesive degradation need to be considered.

[0040] In some embodiments, the opening 121 of the web 12 is provided with stiffening ribs around it. The design of the stiffening ribs can avoid or reduce the influence of the opening on stress to the greatest extent: the hole 123 is preferably designed in the center of the web 12, which can avoid the increase of bending moment and ensure that the stress distribution on both sides of the opening is relatively uniform, improve the stress state of the opening, and improve the bearing capacity of the steel beam 1.

[0041] In some embodiments, the steel beam 1 and the stiffening ribs are fixed by welding, and the bottom stiffening ribs 122 can be used to reinforce the opening of the web 12, bearing the shear force that the opening 121 should bear. At the same time, there is concentrated shear force here, and the stiffening ribs are provided to stabilize the steel beam 1 locally, preventing the steel beam 1 from buckling locally and torsional instability.

[0042] like Figure 3 As shown in the enlarged structural diagram of the connecting member 2 of an elevator hook 3 assembly of the utility model, the fixing hole 21 is located at the middle position of the transverse flange of the connecting member 2 and corresponds to the opening of the bottom stiffening rib 122; the connecting holes 22 are located at the two ends of the transverse flange of the connecting member 2 and correspond to the vertical sections of the hook 3.

[0043] When the fixing hole 21 is located in the middle position, the force transmission between the connector 2 and the steel beam 1 can be made more uniform, avoiding or reducing the bending moment caused by the offset of stress, and ensuring the stability of the connector 2. Furthermore, the opening of the bottom stiffening rib 122 and the fixing hole 21 of the connector 2 are connected and fixed by bolts, ensuring that the fit between the connector 2 and the stiffening rib is tighter, and the stability of the entire structure can also be improved; the vertical section of the hook 3 passes through the connection hole 22 and is fixed to the connector 2 using a double nut, and the vertical section of the hook 3 directly bears the main load. When the connection hole 22 corresponds to the vertical section, the force transmission path can be optimized to avoid the steel beam 1 being directly connected to the hook, which has an adverse effect on the steel beam 1.

[0044] During repeated lifting tasks, the evenly distributed force can reduce local stress concentration and prevent premature fatigue cracks, thereby increasing the service life of the connector 2 and the hook 3. The easily arranged connection holes 22 make installation easier and make it easier to check for any possible wear or damage during regular maintenance and inspection.

[0045] like Figure 4 This is a structural schematic diagram of a second embodiment of an elevator hook assembly of the utility model. The stiffening ribs on both sides of the opening 121 at the web 12 of the steel beam 1 extend to the upper flange 11 and the lower flange 13 respectively. Compared with the first embodiment of the present application, when the opening 121 of the steel beam 1 is subjected to a relatively large concentrated force, the extended stiffening ribs can enhance the bending and torsional capabilities of the steel beam 1 by dispersing the structural stress, improve the overall stability of the steel beam 1, and can effectively enhance the structural rigidity to counteract greater loads and stresses.

[0046] In some embodiments, the cross-section of the steel beam 1 is I-shaped, and the hook 3 is made of Q235B round steel bent into a U shape. The diameter of the steel bar of the hook 3 needs to be determined based on the calculation of the tension borne by the hook 3.

[0047] It should be understood that the steel beam 1, the connector 2 and the hook 3 of an elevator hook assembly of the utility model can be mechanically connected on site without welding or fixing in a concrete slab. The utility model is particularly suitable for elevators without redundant angle steel on the top of the elevator steel beam 1, which facilitates the setting of the elevator top structure (glass roof, floor decking). The utility model is also suitable for machine room-less elevators which have a functional upper part of the elevator shaft and are not suitable for local floor thickening for pre-embedded hooks 3. It only requires pre-drilling holes in the web 12 of the steel beam 1 in the factory to mechanically connect the steel beam 1 and the connector 2 by bolts or the like to provide a stable lifting environment. The connector 2 and the hook 3 are fixed by double nuts, which are simple to install, adaptable to a variety of scenarios and flexible and convenient to operate.

[0048] Specifically, the installation steps of an elevator hook assembly of the utility model are as follows: first, a hole is opened on the web 12 of the steel beam 1 in the factory and a bottom stiffening rib 122 is installed at the hole 121, and symmetrical holes 123 are opened on the bottom stiffening rib 122; secondly, the bottom stiffening rib 122 is mechanically fixed to the connecting piece 2 on site; finally, the connecting piece 2 and the hook 3 are tightly fixed with double nuts to ensure the connection strength and stability between the steel beam 1 and the elevator hook 3.

[0049] In this specification, the same or similar parts between the various embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the embodiments described later, the description is relatively simple, and the relevant parts can be referred to the partial description of the previous embodiments.

[0050] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An elevator hook assembly, comprising a steel beam, a connecting piece and a hook, wherein: The steel beam comprises an upper flange, a web and a lower flange; The connecting piece is an angle steel, comprising a transverse flange and a vertical flange; The hook is a U-shaped hook, comprising a vertical section and a horizontal section; The invention is characterized in that the web is provided with a hole, the hole is provided with a bottom stiffening rib, and the bottom stiffening rib is provided with at least two holes; The transverse flange is provided with at least four openings, including at least two fixing holes and two connecting holes; The steel beam and the connecting piece are fixedly connected at the bottom stiffening rib, and the connecting piece and the hook are fixedly connected at the connecting hole.

2. The elevator hook assembly according to claim 1, characterized in that: The opening of the web is provided with stiffening ribs around all four sides.

3. The elevator hook assembly according to claim 2, characterized in that: The steel beam and the stiffening rib are fixed by welding.

4. The elevator hook assembly according to claim 1, characterized in that: The fixing hole is located in the middle of the transverse flange of the connecting member and corresponds to the opening of the bottom stiffening rib.

5. The elevator hook assembly according to claim 4, characterized in that: The opening of the bottom stiffening rib is fixed to the fixing hole of the connecting member by bolt connection.

6. The elevator hook assembly according to claim 1, characterized in that: The connecting holes are located at two ends of the transverse flange of the connecting piece and correspond to the vertical sections of the hook.

7. The elevator hook assembly according to claim 6, characterized in that: The vertical section of the hook passes through the connecting hole and is fixed to the connecting piece using a double nut.

8. The elevator hook assembly according to claim 1, characterized in that: The transverse section of the hook is located below the lower flange of the steel beam.

9. The elevator hook assembly according to claim 1, characterized in that: The cross section of the steel beam is in an I-shape.

10. The elevator hook assembly according to claim 1, characterized in that: The hook is made of Q235B round steel bent into a U shape.

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