Composite elevator car bottom structure, elevator car and elevator

Abstract

The utility model discloses a compound type elevator car bottom structure, elevator car and elevator, the car bottom structure comprises a frame and a panel fixed on the frame, the frame comprises a rectangular frame main body formed by two longitudinal beams and two cross beams and two auxiliary cross beams parallelly lapped in the frame main body, two groups of mortises are symmetrically formed in the side faces of the two longitudinal beams, the two ends of the auxiliary cross beam further extend outwards to be provided with inserting tenons, the two ends of the upper surface of the auxiliary cross beam extend outwards to be provided with lap joint positioning pieces, the lap joint positioning pieces are in lap joint with the upper surfaces of the longitudinal beams and are riveted with the longitudinal beams through screws, and a plurality of reinforcing flat strips are arranged at the bottom of the panel in parallel. The transverse edges of the two sides of the panel are bent inwards to form reinforcing steps with the same thickness as the reinforcing flat strips, and riveting edges attached to the upper surfaces of the longitudinal beams are formed on the two sides of the longitudinal edges of the panel. According to the scheme, the geometric accuracy of the frame is guaranteed, welding-free assembly is achieved, and the bending rigidity of the car platform and the flatness of the panel are improved through a three-dimensional reinforcing structure formed by bending the panel.

Description

Technical Field

[0001] This utility model relates to the field of elevator cars, and in particular to a composite elevator car bottom structure, an elevator car, and an elevator. Background Technology

[0002] Currently, most elevator car floor structures use a combination of ordinary steel frame and metal plates. These elevator car floor structures generally suffer from the following technical defects:

[0003] Firstly, traditional frame structures often employ welding processes. For example, the utility model patent with authorization announcement number CN208345534U provides a bridge bottom component fixed by welding, made of Q235-A. Q235-A is ordinary carbon structural steel. Ordinary carbon steel plates are prone to corrosion when bent and welded, requiring additional coating treatment, which increases production costs. At the same time, complex structural welding is prone to thermal deformation and difficult to prevent corrosion. Secondly, unreasonable reinforcement structural design can lead to insufficient rigidity of the car bottom, which is prone to deformation after long-term use. Thirdly, traditional processing technology is complex, with many material cutting and welding steps, resulting in low production efficiency and poor quality consistency. Fourthly, ordinary steel is prone to rust and has high maintenance costs, while aluminum alloy frames have high material costs, complex welding processes, and insufficient structural strength.

[0004] In some existing technologies, to enhance the structural stability and rigidity of the car bottom, a reinforcing structure is set between the panel and the frame. For example, the utility model patent with authorization announcement number CN217600153U provides a reinforced elevator composite car bottom plate, in which flat steel is fixedly and evenly distributed on the front end face of the load-bearing steel plate. However, no avoidance structure is set at the connection between the C-shaped bending parts, the equilateral channel steel, and the hollow square tube and the flat steel, which makes it easy for gaps or misalignments to appear at the connection between the panel and the frame, affecting the flatness of the car floor. In addition, other existing improvement solutions often have new problems such as increased structural complexity, increased processing costs, or excessively high installation process requirements, making it difficult to balance structural strength, installation convenience, and economy. Utility Model Content

[0005] Therefore, in order to solve the above problems, this utility model provides a composite elevator car bottom structure, an elevator car, and an elevator.

[0006] This utility model is achieved through the following technical solution:

[0007] A composite elevator car bottom structure includes a frame and a panel fixed to the frame. The frame includes a rectangular frame body formed by two longitudinal beams and two transverse beams, and two auxiliary transverse beams parallel to and overlapping inside the frame body. Two sets of mortises are symmetrically arranged on the sides of the two longitudinal beams. The two ends of the auxiliary transverse beams also have tenons extending outwards, which are inserted into the mortises on the longitudinal beams. The two ends of the upper surface of the auxiliary transverse beams have overlapping positioning pieces extending outwards, which overlap the upper surface of the longitudinal beams and are riveted to the longitudinal beams with screws. The bottom of the panel has multiple reinforcing flat strips arranged parallel to each other. The reinforcing flat strips are arranged in a staggered manner with the transverse beams and auxiliary transverse beams. The two horizontal edges of the panel are bent inwards to form reinforcing steps with the same thickness as the reinforcing flat strips. The two longitudinal edges of the panel are bent outwards to form riveted edges that are in contact with the upper surface of the longitudinal beams. The riveted edges are riveted to the longitudinal beams with screws.

[0008] Preferably, the length of the overlapping positioning piece is less than the width of the longitudinal beam, and the difference between the length of the overlapping positioning piece and the width of the longitudinal beam is greater than or equal to the width of the riveting edge, so that the riveting edge is fixed to the outside of the overlapping positioning piece.

[0009] Preferably, multiple vertically downward inserts are spaced apart on both longitudinal edges of the panel, and an outwardly bent riveting edge is formed between two adjacent inserts, so that the inserts and riveting edges are staggered. The upper surface of the longitudinal beam is provided with an insertion interface for each insert, and the inserts are inserted into the insertion interfaces one by one.

[0010] Preferably, a first structural adhesive layer is provided between the upper surface of the reinforcing strip and the lower surface of the panel, and a second structural adhesive layer is provided between the lower surface of the reinforcing strip and the contact surfaces of the auxiliary crossbeam and the two crossbeams.

[0011] Preferably, both the crossbeam and the longitudinal beam are C-shaped square tubes, each including an upper edge, a side edge, and a lower edge. The two ends of the two longitudinal beams are staggered and inserted into the ends of the two crossbeams, so that the two ends of the upper edge of the crossbeam are fixed to the top of the upper edge of the longitudinal beam, and the two ends of the lower edge of the crossbeam are fixed to the top of the lower edge of the longitudinal beam. The connection between the crossbeam and the longitudinal beam is fixed with screws.

[0012] Preferably, the two ends of the side edging of the crossbeam are respectively formed with outwardly protruding L-shaped buckles, and a groove is formed on the inner side of the L-shaped buckle. The two ends of the side edging of the longitudinal beam are formed with buckles that match the grooves, and the buckles are embedded in the grooves.

[0013] Preferably, the interlocking joints at the ends of the crossbeam and the longitudinal beam are filled with high-strength structural adhesive.

[0014] Preferably, the crossbeams, longitudinal beams, auxiliary crossbeams, and reinforcing strips are all galvanized square tubes, and the panel is a galvanized sheet.

[0015] The elevator car includes the composite elevator car bottom structure described above.

[0016] Elevator, including the elevator car as described above.

[0017] The beneficial effects of this utility model's technical solution are mainly reflected in:

[0018] 1. Through the mortise and tenon combination structure of longitudinal beams, transverse beams and auxiliary transverse beams, combined with the double positioning of overlapping positioning plates, the geometric accuracy of the frame is guaranteed and welding-free assembly is achieved, effectively avoiding thermal deformation. At the same time, the grid reinforcement system with reinforcing flat strips and the frame arranged in a cross-sectional and cross-sectional manner, combined with the three-dimensional reinforcement structure formed by the bending of the panel, improves the bending stiffness of the car bottom.

[0019] 2. An innovative process of strengthening the steps and riveting the edges is adopted, which is combined with mechanical fixing of the plug-in parts and the plug interface and screw riveting. At the same time, the structural adhesive layer between the reinforcing flat strip and the panel, crossbeam and auxiliary crossbeam is used to further fix it. This achieves zero gap fit between the panel and the frame, reduces the flatness error of the car bottom, and further uses the bent edge to fix it to the frame, enhancing the stability of the connection between the panel and the frame.

[0020] 3. The standardized material combination of galvanized square tubes and galvanized sheets has excellent corrosion resistance, eliminating the need for secondary surface treatment. At the same time, the overall structure has a high material utilization rate, reducing weight compared to traditional structures while increasing load-bearing capacity and lowering overall costs.

[0021] 4. The structural adhesive and mechanical connection work together to form a composite load-bearing system, which can maintain connection reliability under vibration conditions, extend service life, strengthen the gap filling bonding between the flat strip and the panel, effectively suppress the vibration noise of metal plates, prevent loosening, and improve ride comfort. Attached Figure Description

[0022] Figure 1 This is a perspective view of the composite elevator car bottom structure in this utility model;

[0023] Figure 2 yes Figure 1 Enlarged view of section A;

[0024] Figure 3 This is a perspective view of the composite elevator car bottom structure in this utility model (the panel is omitted here).

[0025] Figure 4 yes Figure 3 Enlarged view of section B;

[0026] Figure 5 yes Figure 3 Enlarged view of section C;

[0027] Figure 6 This is a bottom view of the composite elevator car bottom structure in this utility model. Detailed Implementation

[0028] To make the objectives, advantages, and features of this utility model clearer and more detailed, the following non-limiting description of preferred embodiments will be illustrated and explained. These embodiments are merely typical examples of applying the technical solutions of this utility model; any technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of protection claimed by this utility model.

[0029] It should also be stated that, in the description of the solution, the terms "center", "upper", "lower", "left", "right", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] Furthermore, the terms "first" and "second" in this solution are used for descriptive purposes only and should not be construed as indicating or implying a ranking of importance, or implicitly specifying the number of technical features shown. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0031] This utility model discloses a composite elevator car bottom structure, such as Figure 1 , Figure 3 As shown, it includes a frame and a panel 1 fixed on the frame. The frame includes a rectangular frame body formed by two longitudinal beams 2 and two transverse beams 3, and two auxiliary transverse beams 4 that overlap in parallel inside the frame body.

[0032] Among them, such as Figure 3 , Figure 5As shown, two sets of mortises 201 are symmetrically arranged on the sides of the two longitudinal beams 2. Tenons 401 extend outwards from both ends of the auxiliary crossbeam 4, and these tenons 401 are inserted into the mortises 201 on the longitudinal beams 2 in a corresponding manner. To further strengthen the connection between the auxiliary crossbeam 4 and the frame body, overlapping positioning pieces 402 extend outwards from both ends of the upper surface of the auxiliary crossbeam 4. These overlapping positioning pieces 402 overlap the upper surface of the longitudinal beam 2 and are riveted to the longitudinal beam 2 with screws. In one embodiment, the tenon can also be configured as an L-shaped snap-fit ​​203 structure, so that after the tenon is inserted into the mortise 201, the bottom of the mortise 201 is embedded in the recess of the L-shaped snap-fit ​​203 structure, further enhancing the stability of the connection. The gap between the tenon and the mortise 201 can also be filled with high-strength structural adhesive (not shown in the figure), further enhancing the strength of the connection between the auxiliary crossbeam 4 and the frame body.

[0033] like Figure 6 As shown, multiple reinforcing flat strips 5 are arranged parallel to each other at the bottom of the panel 1. The reinforcing flat strips 5 are arranged in a crisscross pattern with the crossbeam 3 and the auxiliary crossbeam 4 to improve the structural rigidity of the bottom of the panel 1. The two horizontal edges of the panel 1 are bent inward to form a reinforcing step 101 with the same thickness as the reinforcing flat strips 5. The reinforcing step 101 can compensate for the height difference between the two horizontal edges of the panel 1 and the frame body caused by the reinforcing flat strips 5. The two longitudinal edges of the panel 1 are bent outward to form a riveting edge 103 on the two longitudinal edges of the panel 1 that is in contact with the upper surface of the longitudinal beam 2. The riveting edge 103 is riveted to the longitudinal beam 2 by screws (not shown in the figure), thereby realizing the fixation of the panel 1 to the frame body and the flatness of the surface of the panel 1.

[0034] like Figure 2 , Figure 3 , Figure 5 As shown, in some embodiments, the length of the overlapping positioning piece 402 is less than the width of the longitudinal beam 2, and the difference between the length of the overlapping positioning piece 402 and the width of the longitudinal beam 2 is greater than or equal to the width of the riveting edge 103, so that the riveting edge 103 is fixed to the outside of the overlapping positioning piece 402, thereby preventing the overlapping positioning piece 402 from extending to the connection between the riveting edge 103 and the longitudinal beam 2, ensuring that the overlapping positioning piece 402 and the riveting edge 103 do not interfere with each other, and further ensuring the flatness of the panel 1 and the frame body.

[0035] like Figures 3-5As shown, in some embodiments, multiple vertically downward inserts 102 are spaced apart on the two longitudinal edges of the panel 1, and an outwardly bent riveting edge 103 is formed between two adjacent inserts 102, so that the inserts 102 and the riveting edge 103 are staggered. The upper surface of the longitudinal beam 2 is provided with an insertion interface 202 corresponding to each insert 102. The inserts 102 are inserted into the insertion interfaces 202 one by one. Specifically, the two horizontal edges and the two longitudinal edges of the panel 1 are bent downward to a uniform height. Then, the two horizontal edges of the panel 1 continue to be bent inward vertically to form an L-shaped reinforcing step 101. After the two horizontal edges of the panel 1 are bent downward, the inserts 102 and the outwardly bent riveting edges 103 are staggered, and the riveting edges 103 are ensured to fit against the upper surface of the longitudinal beam 2.

[0036] In one embodiment, a first structural adhesive layer is provided between the upper surface of the reinforcing strip 5 and the lower surface of the panel 1, and a second structural adhesive layer is provided between the lower surface of the reinforcing strip 5 and the contact surfaces of the auxiliary crossbeam 4 and the two crossbeams 3, thereby further enhancing the firmness and flatness of the connection between the reinforcing strip 5 and the panel 1 and the frame. The structural adhesive layer is not shown in the figure. The thickness of the adhesive layer can be adjusted according to actual needs. The structural adhesive material can refer to existing structural adhesive products, which will not be described in detail here.

[0037] In some embodiments, both the crossbeam 3 and the longitudinal beam 2 are C-shaped square tubes, each including an upper edge, a side edge, and a lower edge. The ends of the two longitudinal beams 2 are staggered vertically and inserted into the ends of the two crossbeams 3, such that both ends of the upper edge of the crossbeam 3 are fixed to the top of the upper edge of the longitudinal beam 2, and both ends of the lower edge of the crossbeam 3 are fixed to the top of the lower edge of the longitudinal beam 2. The connection between the crossbeam 3 and the longitudinal beam 2 is secured by screws 6; the connection between the crossbeam 3 and the longitudinal beam 2 can also be secured by a mortise and tenon joint, such as... Figure 3 , Figure 4 As shown, in a preferred embodiment, the two ends of the side edge of the crossbeam 3 are respectively formed with outwardly protruding L-shaped buckles 301, and a slot 302 is formed on the inner side of the L-shaped buckle 301. The two ends of the side edge of the longitudinal beam 2 are formed with buckles 203 that match the slots 302, and the buckles 203 are embedded in the slots 302.

[0038] In one embodiment, the interior of the interlocking connection between the ends of the crossbeam 3 and the longitudinal beam 2 is filled with high-strength structural adhesive (not shown in the figure) to further enhance the stability of the connection between the crossbeam 3 and the longitudinal beam 2.

[0039] In one embodiment, the crossbeam 3, longitudinal beam 2, auxiliary crossbeam 4, and reinforcing flat strip 5 are all galvanized square tubes, and the panel 1 is a galvanized sheet. Galvanized square tubes have good processing performance and are relatively easy to install. Galvanized square tubes and galvanized sheets have high strength and high corrosion resistance, enabling the car bottom to withstand a large load, improving the safety and stability of elevator operation, while reducing processing difficulty and processing cost, improving mass production efficiency, and ensuring product quality.

[0040] This utility model also discloses an elevator car, including the composite elevator car bottom structure described above.

[0041] This utility model also discloses an elevator, including the elevator car as described above.

[0042] This utility model has many other embodiments. All technical solutions formed by equivalent transformation or equivalent transformation fall within the protection scope of this utility model.

Claims

1. A composite elevator car floor structure comprising a frame and a panel secured to the frame, characterized by: The frame comprises a rectangular frame body formed by two longitudinal beams and two transverse beams, and two auxiliary transverse beams parallel to the frame body inside, two groups of mortises are symmetrically arranged on the side surfaces of the two longitudinal beams, the ends of the auxiliary transverse beams are further provided with plug-in tenons which are inserted into the mortises arranged on the longitudinal beams one by one, the upper surfaces of the auxiliary transverse beams are provided with lapping positioning pieces which are lapped on the upper surfaces of the longitudinal beams and riveted with the longitudinal beams through screws, the bottom of the panel is provided with a plurality of reinforcing flat strips which are arranged in a crisscross manner with the transverse beams and the auxiliary transverse beams, the lateral edges of the panel are inwardly bent and form reinforcing steps with the same thickness as the reinforcing flat strips, the longitudinal edges of the panel are outwardly bent and form riveting edges which are attached to the upper surfaces of the longitudinal beams, and the riveting edges are riveted with the longitudinal beams through screws.

2. The composite elevator car floor structure of claim 1, wherein: The length of the lapping positioning piece is less than the width of the longitudinal beam, and the difference between the length of the lapping positioning piece and the width of the longitudinal beam is greater than or equal to the width of the riveting edge, so that the riveting edge is fixed to the outside of the lapping positioning piece.

3. The composite elevator car floor structure of claim 2, wherein: A plurality of vertically downward plug-in pieces are arranged on the longitudinal edges of the panel, the riveting edges are outwardly bent between adjacent two plug-in pieces, so that the plug-in pieces and the riveting edges are arranged in a staggered manner, the upper surfaces of the longitudinal beams are provided with plug-in ports corresponding to each plug-in piece, and the plug-in pieces are inserted into the plug-in ports one by one.

4. The composite elevator car floor structure of claim 3, wherein: A first structural adhesive layer is arranged between the upper surfaces of the reinforcing flat strips and the lower surfaces of the panel, and a second structural adhesive layer is arranged between the lower surfaces of the reinforcing flat strips and the contact surfaces of the auxiliary transverse beams and the two transverse beams.

5. The composite elevator car floor structure of claim 1, wherein: The transverse beams and the longitudinal beams are C-shaped square tubes, each comprising an upper wrapping edge, a side wrapping edge and a lower wrapping edge, the ends of the two longitudinal beams are inserted into the end portions of the two transverse beams in an up-down staggered manner, so that the ends of the upper wrapping edges of the transverse beams are fixed to the top portions of the upper wrapping edges of the longitudinal beams, and the ends of the lower wrapping edges of the transverse beams are fixed to the top portions of the lower wrapping edges of the longitudinal beams, and the connections between the transverse beams and the longitudinal beams are fixed through screws.

6. The composite elevator car floor structure of claim 5, wherein: The ends of the side wrapping edges of the transverse beams are formed with L-shaped buckles which protrude outward, and the inner sides of the L-shaped buckles are formed with clamping grooves, and the ends of the side wrapping edges of the longitudinal beams are formed with clamping buckles which match the clamping grooves and are embedded in the clamping grooves.

7. The composite elevator shoe structure of claim 6, wherein: The insertion connections between the ends of the transverse beams and the longitudinal beams are filled with high-strength structural adhesive.

8. The composite elevator shoe structure of claim 1, wherein: The transverse beams, the longitudinal beams, the auxiliary transverse beams and the reinforcing flat strips are galvanized square tubes, and the panel is a galvanized plate.

9. An elevator car, characterized by: A composite elevator car bottom structure as claimed in any one of claims 1-8.

10. Elevator, characterized in that An elevator car as claimed in claim 9.

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