CN109809278B - Frame type lightweight composite car bottom - Google Patents

Abstract

The invention discloses a frame type light composite sedan-chair bottom, which comprises a supporting frame main body composed of a plurality of lower beams and a frame, and is characterized in that the lower beams are connected into a whole through a diagonal brace, the diagonal brace extends outwards and upwards along the lower beam at the edge, a light strength composite board is arranged in the supporting frame main body, and a sedan-chair bottom board is paved on the supporting frame main body and the light strength composite board. Compared with a method of simply stacking materials and increasing the types of materials, the composite car bottom structure formed by the honeycomb laminate, the truss laminate and the auxiliary parts not only can meet the requirements of rigidity, strength and working space, is light and simple, has profound significance on reducing the dead weight of the car, but also reduces the processing difficulty and the manufacturing cost, realizes the on-site assembly of the module, is more beneficial to transportation and installation, and improves the comprehensive benefit.

Description

Frame type lightweight composite car bottom

Technical field

The present invention relates to vertical lift elevator technology, in particular to a frame-type lightweight composite car bottom that can withstand large-load elevators.

Background technique

Although the elevator car floor device has a variety of structural forms, it is mainly used for products with a conventional load of less than 5000Kg. For example, the patent publication number is CN203079484U, a combined elevator car floor structure, including a guide for the car door to slide. The sill is the car bottom frame that supports the entire car bottom plate, and the shock-absorbing rubber that connects the entire car bottom plate and the car bottom frame and acts as a shock absorber. The car bottom plate consists of the left reinforcing rib, the right reinforcing rib and the bent parts using bolts. 1. Bend parts 2. The bent parts are composed of three connections, and the wooden boards and the above-mentioned car floor are connected into a whole through wood screws. Another example is an elevator car bottom with patent announcement number CN207524785U, which includes a frame, a car bottom plate arranged in an area surrounded by four sides of the frame, and a functional device. The functional device includes a weighted part and a fixed part, and the weighted part includes weighted reinforcing ribs and a set of functional devices. There are weighted blocks in the weighted reinforcement ribs and a cover plate for covering the weighted reinforcement ribs. The frame is provided with a chute for the cover plate to slide. The fixed part includes longitudinal reinforcement ribs for separating and fixing the cover plate and for connecting respectively. Large reinforcements for the frame and cover. With the development of industry, the conventional load and usage area requirements of elevators are getting higher and higher, which requires higher strength and stiffness requirements for the car structure. However, simply relying on stacking materials and increasing material types will not only increase the cost It greatly increases the weight of the car, the difficulty of processing, the cost of production, and the difficulty of installation. The corresponding shaft must also have a larger installation space, which will inevitably increase the cost and difficulty of civil engineering design and construction. The operability is not strong and The overall benefit is poor.

Contents of the invention

The purpose of the present invention is to solve the contradiction between the strength, stiffness and self-weight of the elevator car bottom plate, as well as actual operability and cost, and provide a frame-type lightweight composite car bottom, which uses a supported frame structure to first ensure that the car bottom In terms of the rigidity and strength of the overall force, the honeycomb structure or truss structure laminates are nested within the frame structure to ensure the rigidity and strength of the car bottom in the local force, which not only greatly reduces the weight of the body, but also greatly improves the Operability of equipment manufacturing and installation.

The above technical problems of the present invention are mainly solved through the following technical solutions: a frame-type lightweight composite car bottom, including a support frame main body composed of a plurality of supporting lower beams and a frame, characterized in that the plurality of supporting lower beams They are connected into one body by diagonal stays, and the diagonal stays extend outward and upward along the lower beam at the edge. A lightweight strength composite board is provided in the main body of the support frame. The car floor is laid on the high-strength composite board.

In the aforementioned frame-type lightweight composite car bottom, preferably, the lightweight strength composite panel is a honeycomb laminate.

In the aforementioned frame-type lightweight composite car bottom, preferably, the lightweight strength composite panels are truss laminates.

In the aforementioned frame-type lightweight composite car bottom, preferably, the diagonal stays include short diagonal stays and long diagonal stays, where the short diagonal stays are arranged outward and upward from the lowermost beam at an acute angle, and the long diagonal stays are arranged at an acute angle. The angle of inclination of the braces between the lower beams is opposite to that of short diagonal braces.

In the aforementioned frame-type lightweight composite car bottom, preferably, the lower beam is supported at the bottom of the frame, and the honeycomb laminate is a plate-like structure composed of continuously arranged polygonal holes with a thickness matching the height of the frame. Honeycomb laminates not only have high structural strength, but also have a sound-absorbing effect during operation.

In the aforementioned frame-type lightweight composite car bottom, preferably, the truss laminate is a flat rectangular parallelepiped structure with upper and lower parallel planes composed of crisscrossly arranged profile tie bars.

In the aforementioned frame-type lightweight composite car bottom, preferably, the honeycomb laminate further includes a frame located at its surrounding portions. Through the frame, it can be installed on the main frame of the car floor.

In the aforementioned frame-type lightweight composite car bottom, preferably, the lightweight strength composite panel is a module unit, and the module unit has a connection portion with its adjacent components.

In the aforementioned frame-type lightweight composite car bottom, preferably, the connection portion between the module unit and its adjacent components is fitted through a slot buckle structure.

This technical solution makes full use of the plate structure composed of honeycomb and three-dimensional trusses to obtain a car frame body with light specific gravity, high strength, high stiffness and stable structure to enhance the load-bearing capacity of large-load elevators. This solution can further modularize the car frame structure to facilitate installation and transportation, and can meet new model requirements by increasing or decreasing the structural dimensions of honeycomb laminates, truss laminates and their frames according to the car load. The lower keel structure that supports the defined honeycomb laminates and truss laminates supplements their bending resistance and is also a supporting factor for the entire car bottom, further ensuring the bending stiffness and structural stability of such a large-area car bottom.

This technical solution includes using parallel lower beams located on the same horizontal plane as the bottom foundation, and connecting the lower beams into an integrated structure with a curved surface through long and short diagonal braces, that is, the diagonal braces on both sides of the outermost lower beam are outward and upward. Extended, the diagonal stays between the middle lower beam and the lower beam are also set at an angle to the horizontal, making the entire base an integrated structure distributed in multiple spaces. When the load is transferred to the upper car bottom (the load It can be in any direction or any part of the car bottom). The integrated structure will enable all components to bear the same load at the same time, thus fully utilizing the potential of materials and structures, and greatly improving the anti-deformation capacity of the car bottom, in order to obtain the load-bearing direction. Maximum rigidity.

The lightweight strength composite panels in this plan have a variety of structural combinations, such as honeycomb laminates, truss laminates, etc. The lightweight strength composite panels are arranged in a frame above the lower beam. Not only the frame can connect the components Integrated into one, it can also apply horizontal prestress between the frame and the lightweight strength composite panel through "preload bolts" according to the design and actual installation conditions, which can achieve better stiffness while tightening the structure, thus obtaining A car bottom product that is light, simple and has high strength.

Furthermore, in order to ensure the refinement of product height (volume), the diagonal stays include long and short specifications. In contrast, the honeycomb laminates and frames are also designed in different sizes and lengths, which not only makes the entire car bottom structure It is more reasonable and further disperses the stress concentration points of the product, including the reverse arrangement of the upturned angle of the short diagonal braces and the inclination angle of the long diagonal braces. The honeycomb laminate designed in this plan is a grid plate, which is generally composed of continuous regular hexagonal holes and has sufficient compressive strength in the vertical and horizontal directions. Similarly, the truss laminate adopts a crisscross and orderly structure. The arranged profiles are welded with tie bars. Within the scope of its flat rectangular parallelepiped structure, it is lighter in weight and more reliable in strength and stiffness than profiles of the same thickness.

Compared with the existing technology, the beneficial effects of the present invention are: designed according to the unique ultra-large rated load and working space requirements of the ultra-large load elevator, the composite car bottom structure is composed of honeycomb laminates, truss laminates and various auxiliary parts. Compared with Instead of simply relying on stacking materials and increasing material types, it can not only meet the requirements of stiffness, strength and working space, but is light and simple, which has far-reaching significance for reducing the weight of the car, and also reduces the processing difficulty and manufacturing costs, realizing the module Combined on-site assembly is more conducive to transportation and installation and improves overall benefits.

Description of drawings

Figure 1 is a schematic diagram of a built-in honeycomb laminate assembly structure of the present invention.

Figure 2 is a schematic diagram of a built-in truss layer plate assembly structure of the present invention.

Figure 3 is a schematic diagram of the appearance of an assembled three-dimensional structure of the present invention.

FIG. 4 is a front view of FIG. 3 .

Figure 5 is a schematic diagram of the assembly structure of a honeycomb laminate according to the present invention.

Figure 6 is a schematic structural diagram of a honeycomb laminate unit of the present invention.

Figure 7 is a schematic structural diagram of a truss laminate unit according to the present invention.

Figure 8 is a schematic diagram of the connection structure between a lightweight strength composite panel and a lower beam according to the present invention.

In the picture: 1. Short-distance honeycomb laminate, 101. Short-distance truss laminate, 2. Short-distance car floor, 3. Long-distance honeycomb laminate, 301. Long-distance truss laminate, 4. Long-distance car floor, 5 . Frame, 6. Short diagonal stay, 7. Long diagonal stay, 8. Lower beam.

Detailed ways

The technical solution of the present invention will be further described in detail below through examples and in conjunction with the accompanying drawings.

This embodiment is a frame-type lightweight composite car bottom, which includes a support frame main body composed of three equidistant parallel lower beams 8 and a truss frame 5 with a rectangular frame, and is supported by diagonal stays between the three lower beams. They are connected into one body to form an overall structure, and the diagonal bracing extends outward and upward along the lowermost beam at the edge. A lightweight strength composite board is provided in the main body of the support frame, and is laid on the main body of the support frame and the lightweight strength composite board. There is a car floor.

Specifically, the three lower beams 8 are located on the same horizontal plane and are arranged parallel and equidistant from each other. The three lower beams 8 are all arranged at parallel intervals from the back of double channel steel and are welded into one body by connecting plates. Then the three lower beams 8 are are connected into one body by 6 diagonal stays. The lower beams 8 along both sides of the diagonal stays extend outward and upturned. Between the two adjacent lower beams 8, the upper and outward extending parts of the diagonal stays are The space above the diagonal stays is used as a layout space for lightweight strength composite panels. As shown in Figures 3 and 4, the lightweight strength composite panels are simultaneously located in the frame 5 set above the lower beam 8. Between the frame 5 and the lower beam The car floor is laid above the main body of the support frame composed of 8.

Furthermore, in practice, the lightweight strength composite panel of this embodiment is made into a module unit. This module unit has connections between its adjacent components such as the lower beam 8, the truss frame 5, etc., as shown in Figure 8. There are lower opening slots around the unit, and the lower beam 8 or the inner frame of the truss frame 5 is provided with a granting side slot that matches the lower opening slot and opens upward, so that the lightweight strength composite panel module unit can be installed When inserted directly downward, it not only ensures that the module unit is completely positioned in the inner frame composed of the lower beam 8 and the truss frame 5, but also integrates the interconnected parts to form a high-strength structure.

Embodiment 1: A composite car bottom with a built-in honeycomb laminate composite structure. The lightweight strength composite panel is a honeycomb laminate. The honeycomb laminate is composed of regular hexagonal holes arranged continuously and has a height equal to that of the inner space of the frame 5. A plate structure of matching thickness, as shown in Figures 1, 5, and 6, with 3 lower beams 8 arranged parallel to each other on the same horizontal plane, and 4 areas of diagonal stays arranged along the length of the car bottom. , among which the long cable-stayed braces 7 are arranged between two adjacent ones, and the short cable-stayed braces 6 extending outward and upward along the lower beams 8 on both sides are short cable-stayed braces 6. The lower beams 8 are tilted outward at an angle of 5 degrees, and the inclination angle of the long diagonal braces 7 between the lower beams 8 is opposite to that of the short diagonal braces 6 . Set up a frame 5, the area of which is suitable for the keel structure of the combination of the lower beam 8 and the cable-stayed braces. Lay the long-distance honeycomb laminate 3 above the long cable-stayed braces 7 and fix them with adjacent components. 6. Lay short-distance honeycomb laminates 1 above and fix them with adjacent components. Since the honeycomb laminates have frames located around them, the honeycomb laminates can be inserted and fixed to the lower beam 8 and the frame 5 through the frame. In the main body of the support frame, finally, above the frame 5, long-distance car bottom plates 4 and short-distance car bottom plates 2 are laid corresponding to the long-distance honeycomb laminates 3 and short-distance honeycomb laminates 1.

Embodiment 2: A composite car bottom with a built-in truss layer plate combination structure. The lightweight strength composite plate is a truss layer plate. The truss layer plates are composed of rectangular frames made of square tube profiles and arranged in a criss-cross direction. Various tie bars made of pipes are flat rectangular structures with upper and lower parallel planes, as shown in Figures 2 and 7. The basic assembly structure of the composite car bottom is the same as that of Embodiment 1. The long diagonal stays 7, The short diagonal bracing 6 can be replaced with the long-distance truss layer 301 and the short-distance truss layer 101. The truss layer can be connected to the support frame composed of the lower beam 8 and the frame 5 by welding, screwing or plugging buckles. The main body is fixed.

When used, each component can be packaged and transported separately and installed on site.

The above-mentioned embodiments are illustrative of the present invention, but do not limit the present invention. Any simple transformation of the structure or method of the present invention belongs to the protection scope of the present invention.

Claims (4)

1. A frame-type lightweight composite car bottom, including a support frame main body composed of a plurality of supporting lower beams (8) and a frame (5), characterized in that the plurality of supporting lower beams are connected into one body by diagonal braces , and the diagonal bracing extends outward and upward along the lowermost beam at the edge. A lightweight strength composite plate is provided in the main body of the support frame, and a car floor is laid on the main body of the support frame and the lightweight strength composite plate. ; The cable-stayed braces include short cable-stayed braces (6) and long cable-stayed braces (7). The short cable-stayed braces are arranged outward and upturned at an acute angle from the lowermost beam (8), and the long cable-stayed braces are arranged at an acute angle on the lower beam (8). The inclination angle between them is opposite to that of short diagonal stays; The lightweight strength composite board is a module unit, and the module unit has a connection part with its adjacent components; the connection part is matched through a slot buckle structure; The lightweight strength composite panel is a truss laminate; the truss laminate is a flat rectangular parallelepiped structure with upper and lower parallel planes composed of profile tie bars arranged in a criss-cross pattern. 2. The frame-type lightweight composite car bottom according to claim 1, characterized in that the lightweight strength composite panel is a honeycomb laminate. 3. The frame-type lightweight composite car bottom according to claim 2, characterized in that the lower beam (8) is supported at the bottom of the frame (5), and the honeycomb laminate is composed of polygonal holes arranged continuously and has a structure with the frame. The hollow height of the frame matches the thickness of the plate-like structure. 4. The frame-type lightweight composite car bottom according to claim 2 or 3, characterized in that the honeycomb laminate further includes a frame located at its surrounding portions.