Elevator lifting hook fixing device

Abstract

The utility model provides an elevator lifting hook fixing device and relates to the technical field of elevator equipment. The device comprises a steel beam, a connecting piece and a lifting hook, the steel beam is connected with the connecting piece in a welded mode, a web of the steel beam is further provided with stiffening ribs at the welded joint, and the lifting hook bears force and transmits the force to the connecting piece and the steel beam; the lifting hook connecting piece and the steel beam can be positioned and welded on site, do not need to be fixed in a concrete slab, can adapt to various scenes, are flexible and convenient to operate, and avoid local stress concentration of the steel beam and enable stress distribution to be more uniform due to the fact that holes do not need to be punched in the steel beam.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator equipment, in particular to an elevator hook fixing device. 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: The first case is to fix the hook fixing device partially in the concrete slab. This practice is prone to limit the usage scenarios and make replacement difficult in the later stage; the second case is to perforate the lower flange of the steel beam, and fix the hook by welding or nuts after passing through the hole. Since the flange plate of the steel beam mainly bears the bending moment of the beam, the perforation of the flange will cause damage to the main structural components and reduce the strength of the steel beam. This practice produces a large concentrated stress on the lower flange of the steel beam, reducing the safety reserve of the component.

[0004] 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. However, it means that the elevator hook needs to be installed before the concrete slab is cast, and it cannot be used in installation scenarios where the concrete slab has been cast or there is no concrete floor.

[0005] 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. Since 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 cracks and reducing the durability of the structure.

[0006] The Chinese invention patent application numbered CN117602478A discloses a rear-mounted machine room-less elevator hook assembly and construction method, including a steel beam and a hook, wherein both ends of the steel beam are arranged at the top of the shaft beam, and the hook is arranged on the steel beam and extends downward. The hook assembly of this design has a simple structure and is easy to construct, but the hook is fixedly connected to the lower flange of the steel beam by a perforated plug welding method, which generates a large concentrated stress and reduces the safety reserve of the component.

[0007] In view of the shortcomings of existing elevator hooks, the utility model discloses an elevator hook fixing device. The hook connecting piece and the steel beam can be positioned and welded on site without being fixed in a concrete slab. It is adaptable to a variety of scenarios, flexible and convenient to operate, and does not require drilling holes in the steel beam, thus avoiding local stress concentration on the steel beam and making the stress distribution more uniform. Utility Model Content

[0008] In view of this, the embodiment of the present application provides an elevator hook fixing device to solve the problem of local stress concentration on the steel beam caused by the installation scene limitation and the hole. The embodiment of the present application provides the following technical solutions:

[0009] On the one hand, the embodiment of the present application provides an elevator hook fixing device, 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, and the transverse flange is provided with an opening; the hook is a U-shaped hook, comprising a vertical section and a transverse section;

[0010] The steel beam is connected to the connecting piece by welding, the opening of the connecting piece corresponds to the vertical section of the hook, and the vertical section of the hook passes through the corresponding opening on the connecting piece and is fixed to the connecting piece using a double nut.

[0011] Furthermore, the transverse flange of the connecting piece is fixed to the upper flange of the steel beam by fillet welding; the vertical section of the hook is located on both sides of the steel beam, and the transverse section of the hook is located below the lower flange of the steel beam.

[0012] Furthermore, a stiffening rib is provided on the web of the steel beam, and the stiffening rib is welded to the upper flange, web and lower flange of the steel beam. The stiffening rib and the vertical flange of the connecting piece are located in the same vertical plane, and the thickness of the stiffening rib is not less than the thickness of the flange of the connecting piece.

[0013] Furthermore, the opening of the connecting member is located at a middle position of the connecting member beyond the upper flange portion of the steel beam.

[0014] Furthermore, the length of the connecting piece is 20 cm longer than the length of the upper flange of the steel beam. After the connecting piece is fixed to the steel beam, the length of the connecting piece exceeds the upper flange of the steel beam by 10 cm at both ends.

[0015] On the other hand, two steel beam connecting parts are welded on the web of the steel beam, and the steel beam connecting parts include an inverted L-shaped plate and stiffening plates located on both sides of the inverted L-shaped plate.

[0016] Furthermore, the vertical flange of the connecting member is welded to the inverted L-shaped plate, and the vertical section and the transverse section of the hook are both located below the lower flange of the steel beam.

[0017] Furthermore, the stiffening plate is welded to the web of the steel beam and the inverted L-shaped plate, the stiffening plate is arranged along the direction of the steel beam and is perpendicular to the inverted L-shaped plate, and the thickness of the stiffening plate is not less than the thickness of the inverted L-shaped plate.

[0018] Furthermore, the openings of the connecting member are located on both sides of the connecting member and are symmetrical about the center line of the steel beam.

[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 hook connector and the steel beam of the elevator hook fixing device of the utility model can be positioned and welded on site without being fixed in a concrete slab. The utility model is particularly suitable for sightseeing elevators with glass top covers, no concrete floor slabs, and steel beams must be set for fixing. The utility model is also suitable for machine room-less elevators with functional use at the top of the elevator shaft and not suitable for pre-embedded hooks with local thickening of the floor slabs. The utility model is suitable for various scenarios and is flexible and convenient to operate.

[0022] The utility model provides an elevator hook fixing device in which the hook is fixed on a connecting piece, and the connecting piece then transmits force to a steel beam. Through a simple force transmission path conversion, it is not necessary to drill a hole on the steel beam, thereby avoiding local stress concentration on the steel beam and making the stress distribution more uniform.

[0023] The utility model provides a lifting hook fixing device for an elevator. A stiffening rib is arranged at the fixing hook of the steel beam to absorb the concentrated shear force brought by the connecting piece, and at the same time, the local stiffness of the web is enhanced, so that it can better bear uneven loads, improve stability, and avoid buckling of the web due to local instability.

[0024] In one embodiment of the utility model, a connecting piece is arranged on the upper flange of a steel beam, which meets the top-down operation requirements of workers on site, and the positioning and welding operations are more convenient;

[0025] In one embodiment of the utility model of an elevator hook fixing device, the angle steel length of the extending parts at both ends of the connecting piece is about 100mm longer than the width of the steel beam flange on both sides, leaving a reasonable space for the hook fixing operation, and the construction operation space is reasonable;

[0026] In an embodiment of the utility model of an elevator hook fixing device, a connecting piece is arranged on the web of a steel beam, which is suitable for the situation that an angle steel connecting piece is not arranged on the upper flange during the installation of the steel beam, and the floor slab has been poured and needs to be processed on site. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] 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.

[0028] Figure 1 It is a structural schematic diagram of an upper flange connected to a connecting piece of an elevator hook fixing device of the utility model;

[0029] Figure 2 It is a side view of the upper flange connected to the connecting piece of an elevator hook fixing device of the utility model;

[0030] Figure 3 It is a schematic diagram of a web plate connected to a connecting piece of an elevator hook fixing device of the utility model;

[0031] Figure 4 The utility model is a structural schematic diagram of a steel beam connecting member of an elevator hook fixing device.

[0032] Markings in the figure: 1. Steel beam, 11. Upper flange, 12. Web, 13. Lower flange, 2. Connector, 21. Vertical flange, 22. Transverse flange, 23. Opening, 3. Hook, 31. Vertical section, 32. Transverse section, 4. Stiffening rib, 5. Steel beam connecting part, 51. Inverted L-shaped plate, 52. Stiffening plate. DETAILED DESCRIPTION

[0033] The embodiments of the utility model are described in detail below with reference to the accompanying drawings.

[0034] 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.

[0035] 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.

[0036] In the description of this article, stiffeners are an important structure designed to enhance the bearing capacity of beams and prevent buckling. 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 the key stress points of the beams to maximize the strength of the beams and improve the stability of the steel beams.

[0037] On the one hand, the embodiment of the present application provides an elevator hook fixing device, which is composed of a steel beam 1, a connector 2 and a U-shaped hook 3. In the design of this device, the steel beam 1 can be divided into three parts: an upper flange 11, a web 12 and a lower flange 13; the connector 2 is composed of an angle steel, and has two parts: a transverse flange 22 and a vertical flange 21. The transverse flange 22 of the connector 2 has an opening 23 design, and the U-shaped hook 3 is composed of a vertical section 31 and a transverse section 32. In the structure of the fixing device, the steel beam 1 and the connector 2 are connected by welding, and the web 12 of the steel beam 1 is also equipped with a stiffening rib 4 at the place where the welding is connected. The opening 23 design of the connector 2 corresponds to the vertical section 31 of the hook 3. The vertical section 31 of the hook 3 will pass through the corresponding opening 23 on the connector 2 to fix the hook 3 on the connector 2. The fixing device uses a double nut to fix the hook 3 to the connector 2 to ensure its stability and safety. During use, the hook 3 is subjected to force and transmits the force to the connecting piece 2, and the connecting piece 2 then transmits the force to the steel beam 1. Through a simple force transmission path conversion, there is no need to drill holes in the steel beam 1, thus avoiding local stress concentration in the steel beam 1 and making the stress distribution more uniform.

[0038] 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.

[0039] It should be understood that the hook 3, connecting piece 2 and steel beam 1 of the elevator hook fixing device of the utility model can be positioned and welded on site without being fixed in a concrete slab. The utility model is particularly suitable for sightseeing elevators with a glass top cover and no concrete floor slab, where a steel beam 1 must be set for fixing the hook. The utility model is also suitable for machine room-less elevators with a functional upper part of the elevator shaft and where local floor slab thickening is not suitable for pre-embedded hook 3. Only the position of the connecting piece 2 needs to be reserved to provide a stable lifting environment by welding the steel beam 1 and the connecting piece 2. The hook 3 and the connecting piece 2 are fixed by double nuts, which are simple to install, adaptable to a variety of scenarios and flexible and convenient to operate.

[0040] Figure 1It is a structural schematic diagram of the upper flange of the connecting piece of the elevator hook fixing device of the utility model. When the connecting piece 2 is connected to the upper flange 11 of the steel beam 1, the transverse flange 22 of the connecting piece 2 is fixed to the upper flange 11 of the steel beam 1 by fillet welding, wherein the fillet welding refers to the welding of one side of the transverse flange 22 of the angle steel with the surface of the upper flange 11 of the steel beam 1. Through welding, the angle steel and the steel beam 1 can form a solid connection, thereby enhancing the stability and strength of the overall structure. After the connecting piece 2 is welded, the hook 3 is fixed with a double nut. At this time, the vertical section 31 of the hook 3 is located on both sides of the steel beam 1, and the transverse section 32 of the hook 3 is located below the lower flange 13 of the steel beam 1. The connecting piece 2 is arranged on the upper flange 11 of the steel beam 1, which meets the top-down operation requirements of workers on site and is convenient for on-site positioning and welding operations.

[0041] Figure 2 It is a side view of the upper flange connected to the connecting piece of the elevator hook fixing device of the utility model, the stiffening rib 4 is welded to the upper flange 11, the web 12 and the lower flange 13 of the steel beam 1, the stiffening rib 4 and the vertical flange 21 of the connecting piece 2 are located in the same vertical plane, and the thickness of the stiffening rib 4 is not less than the flange thickness of the connecting piece 2.

[0042] After the connector 2 is positioned and fixed on the upper flange 11 of the steel beam 1 according to the hook 3, the steel beam 1 stiffening rib 4 is welded at the web 12 of the steel beam 1 in the same vertical plane as the vertical flange 21 of the connector 2. The thickness of the stiffening rib 4 should be greater than the thickness of the vertical flange 21 of the connector 2. The size of the stiffening rib 4 should be embedded in the semi-I-shaped structure of the steel beam 1, connected to the upper flange 11, web 12 and lower flange 13 of the steel beam 1, and preferably will not affect the vertical section 31 of the hook 3 during operation. By adding the stiffening rib 4, the strength of the beam can be enhanced and the bending of the connector 2 can be resisted. The rigidity of the beam can also be increased, making it more able to withstand uneven loads and improve stability.

[0043] In some embodiments, the opening 23 of the connector 2 is located in the middle of the horizontal flange portion of the connector 2 that extends beyond the upper flange 11 of the steel beam 1. Specifically, the length of the connector 2 needs to be about 20 cm longer than the length of the upper flange 11 of the steel beam 1, so that after the connector 2 is fixed to the steel beam 1, the length of the portion of the connector 2 that extends beyond the upper flange 11 of the steel beam 1 is about 10 cm at both ends, leaving a reasonable space for the steel bar fixing operation, which is convenient for construction operations. The structural requirements of the opening 23 of the connector 2 also limit the width of the horizontal flange of the connector 2. It is necessary to calculate and determine the specifications of the angle steel and the diameter of the steel bar of the hook 3 based on the tension borne by the hook 3, and then select the width of the horizontal flange of the connector 2 that can bear the opening 23 that is larger than the diameter of the steel bar.

[0044] Figure 3It is a schematic diagram of the web plates connected to the connecting parts of an elevator hook fixing device of the utility model: in the figure, the connecting part 2 is welded to the steel beam connecting part 5 and then welded to the steel beam 1 through the steel beam connecting part 5, wherein the steel beam connecting part 5 includes an inverted L-shaped plate 51 and stiffening plates 52 located on both sides of the inverted L-shaped plate 51, the inverted L-shaped plate 51 consists of a longer vertical part and a shorter horizontal part, the vertical flange 21 of the connecting part 2 is welded to the vertical part of the inverted L-shaped plate 51, the length of the lower end of the vertical part of the inverted L-shaped plate 51 exceeding the lower flange 13 of the steel beam 1 must be greater than the length of the vertical flange 21 of the connecting part 2 so as to ensure that the contact area between the connecting part 2 and the inverted L-shaped plate 51 is complete; in this embodiment, the vertical section 31 and the horizontal section 32 of the hook 3 are both located below the lower flange 13 of the steel beam 1, and there is no redundant angle steel on the top of the elevator steel beam 1, which is convenient for the arrangement of the elevator top structure (glass roof, floor decking).

[0045] Figure 4 This is a schematic diagram of the structure of a steel beam coupling of an elevator hook fixing device of the utility model: two steel beam couplings 5 ​​are welded on the web 12 of the steel beam 1, and the steel beam coupling 5 includes an inverted L-shaped plate and stiffening plates 52 located on both sides of the inverted L-shaped plate. The two inverted L-shaped plates 51 are symmetrically arranged on both sides of the steel beam 1. The inverted L-shaped plate 51 is composed of a longer vertical part and a shorter horizontal part. After one end of the horizontal part is welded to the web 12 according to the position of the hook 3, stiffening plates 52 are welded on both sides of the horizontal part of the inverted L-shaped plate 51 at the middle position of the welding. The stiffening plates 52 are arranged along the direction of the steel beam 1 and are perpendicular to the inverted L-shaped plate 51. One side of the stiffening plate 52 is connected to the middle position of the horizontal part of the inverted L-shaped plate 51, and one side is connected to the web 12 of the steel beam 1. The thickness of the stiffening plate 52 is not less than the thickness of the inverted L-shaped plate 51. The use of the stiffening plate 52 arranged along the steel beam 1 helps to improve the lateral stability of the inverted L-shaped plate 51. The fixing device using the inverted L-shaped plate 51 in this embodiment is suitable for the situation where no hole is reserved in the upper flange 11 of the steel beam 1 during the installation of the steel beam 1, and the connecting piece 2 cannot be welded on the upper flange 11 and needs to be processed on site.

[0046] Specifically, the installation steps of the inverted L-shaped plate 51 fixing device are as follows: first, according to the design and installation requirements of the elevator, determine the specific connection position of the elevator hook 3 and the steel beam 1; secondly, determine the fixing position of the inverted L-shaped plate 51 according to the position of the hook 3 and the connecting piece 2; after fixing the inverted L-shaped plate 51, weld the stiffening plate 52 on both sides thereof; then fix the connecting piece 2 after the hole 23 of the hook 3 is opened to the inverted L-shaped plate 51; finally, use a double nut to tightly fix the hook 3 and the connecting piece 2 to ensure the connection strength and stability between the elevator hook 3 and the steel beam 1.

[0047] In some embodiments, the openings 23 of the connecting member 2 are located on both sides of the connecting member 2 , symmetrically about the center line of the steel beam.

[0048] 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.

[0049] 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 fixing device, 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, and the transverse flange is provided with an opening; The hook is a U-shaped hook, comprising a vertical section and a horizontal section; It is characterized in that the steel beam is welded to the connecting piece, the opening of the connecting piece corresponds to the vertical section of the hook, and the vertical section of the hook passes through the corresponding opening on the connecting piece and is fixed to the connecting piece using a double nut.

2. The elevator hook fixing device according to claim 1, characterized in that: The transverse flange of the connecting piece is fixed to the upper flange of the steel beam by fillet welding; the vertical section of the hook is located on both sides of the steel beam, and the transverse section of the hook is located below the lower flange of the steel beam.

3. The elevator hook fixing device according to claim 2, characterized in that: A stiffening rib is provided on the web of the steel beam, and the stiffening rib is welded to the upper flange, web and lower flange of the steel beam. The stiffening rib and the vertical flange of the connecting piece are located in the same vertical plane, and the thickness of the stiffening rib is not less than the thickness of the flange of the connecting piece.

4. The elevator hook fixing device according to claim 3, characterized in that: The opening of the connecting member is located at a middle position of the connecting member beyond the upper flange portion of the steel beam.

5. The elevator hook fixing device according to claim 4, characterized in that: The length of the connecting piece is 10cm to 20cm longer than the length of the upper flange of the steel beam. After the connecting piece is fixed to the steel beam, the length of the connecting piece exceeds the upper flange of the steel beam by 5cm to 10cm at both ends.

6. The elevator hook fixing device according to claim 5, characterized in that: Two steel beam connecting pieces are welded on the web of the steel beam, and the steel beam connecting pieces include an inverted L-shaped plate and stiffening plates located on both sides of the inverted L-shaped plate.

7. The elevator hook fixing device according to claim 6, characterized in that: The vertical flange of the connecting member is welded to the inverted L-shaped plate, and the vertical section and the transverse section of the hook are both located below the lower flange of the steel beam.

8. The elevator hook fixing device according to claim 7, characterized in that: The stiffening ribs are welded to the web of the steel beam and the inverted L-shaped plate. The stiffening ribs are arranged along the direction of the steel beam and are perpendicular to the inverted L-shaped plate. The thickness of the stiffening ribs is not less than the thickness of the inverted L-shaped plate.

9. The elevator hook fixing device according to claim 6, characterized in that: The openings of the connecting member are located on both sides of the connecting member and are symmetrical about the center line of the steel beam.

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

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