A bottom plate for rail vehicle equipment compartment and a structure for the bottom plate for rail vehicle equipment compartment

Abstract

The present invention provides a rail vehicle equipment compartment floor and rail vehicle equipment compartment floor structure, wherein the rail vehicle equipment compartment floor comprises: a first skin, a second skin and a foam structure layer; the first skin and the second skin are made of fiberglass; and the foam structure layer is filled between the first skin and the second skin. The rail vehicle equipment compartment floor and rail vehicle equipment compartment floor structure provided by the embodiment of the present invention meet the high-quality and high-requirement regulations such as intelligence, green environmental protection, and sustainable development. Even if the high-tech equipment on the vehicle is increased, the weight of the vehicle body can be reduced by the bottom plate made of glass material and the equipment compartment reduction beam, and the impact of splashing foreign objects on the rail surface can be effectively prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of composite panels, and in particular to a rail vehicle equipment compartment floor plate and a rail vehicle equipment compartment floor plate structure. Background Art

[0002] In the field of rail transit, the undercarriage environment of high-speed vehicles is complex, and it is usually necessary to set up a special equipment cabin under the vehicle for placing various equipment to ensure the operational safety of the undercarriage equipment. For this equipment cabin, the bottom plate of the equipment cabin is the most important part. Since the bottom plate is close to the rail surface, it must withstand the impact and vibration generated during the operation of the train, and also be able to withstand the impact of foreign objects splashed from the rail surface. At present, aluminum profiles are often used to make the bottom plate of the equipment cabin, but aluminum profiles are heavy and difficult to repair after damage. Summary of the invention

[0003] In order to solve the above problems, an object of the embodiments of the present invention is to provide a rail vehicle equipment compartment floor and a rail vehicle equipment compartment floor structure.

[0004] In a first aspect, an embodiment of the present invention provides a rail vehicle equipment compartment floor, comprising: a first skin, a second skin and a foam structure layer; the first skin and the second skin are made of fiberglass reinforced plastic material; the foam structure layer is filled between the first skin and the second skin.

[0005] Optionally, the thickness of the first skin is between 0.5 mm and 3.5 mm; the thickness of the second skin is between 1.5 mm and 3.5 mm.

[0006] Optionally, the thickness of the foam structure layer is between 23 mm and 28 mm.

[0007] Optionally, the rail vehicle equipment compartment floor plate further comprises: a side frame; the side frame is disposed in close contact with the lateral side of the rail vehicle equipment compartment floor plate.

[0008] Optionally, the rail vehicle equipment compartment floor further comprises: an end frame; the end frame is disposed in close contact with the longitudinal side of the rail vehicle equipment compartment floor.

[0009] Optionally, the rail vehicle equipment compartment bottom plate further includes: a side sealing strip and an end sealing strip; the side sealing strip is arranged on a side of the side frame away from the foam structure layer; the end sealing strip is arranged between the end frame and the equipment compartment frame.

[0010] Optionally, the rail vehicle equipment compartment floor plate further comprises: an inner nested tube; the inner nested tube is vertically and embedded through the longitudinal center line of the rail vehicle equipment compartment floor plate; or is symmetrically vertically and embedded through the longitudinal center line on both sides thereof; the inner nested tube is used to be connected to the equipment compartment damping beam.

[0011] In the second aspect, an embodiment of the present invention further provides a rail vehicle equipment compartment floor structure, comprising: the above-mentioned rail vehicle equipment compartment floor including an inner nested tube, an equipment compartment damping beam and a connecting piece; the connecting piece is used to connect the rail vehicle equipment compartment floor and the equipment compartment damping beam.

[0012] Optionally, the connecting part includes: a threaded block, a first bolt, an external sleeve and a first nut; the threaded block is a steel block with a threaded hole, which is arranged at a position corresponding to the inner nested tube in the equipment cabin damping beam; the external sleeve is nested inside the nested tube, and the first bolt is inserted through the threaded block, the inner nested tube, the external sleeve and the first nut.

[0013] Optionally, the equipment cabin damping beam is made of fiberglass reinforced plastic material.

[0014] Optionally, the rail vehicle equipment compartment floor structure further includes: a rubber pad; the rubber pad is arranged between the rail vehicle equipment compartment floor and the equipment compartment damping beam.

[0015] Optionally, the rail vehicle equipment compartment bottom plate structure also includes: a second bolt and a second nut; the second bolt is used to penetrate the fastening point of the equipment compartment damping beam, the connection point of the equipment compartment frame corresponding to the fastening point and the second nut to connect the equipment compartment damping beam and the equipment compartment frame; the fastening points are located at both ends of the equipment compartment damping beam.

[0016] In the solution provided in the first aspect of the embodiment of the present invention, the first skin and the second skin made of fiberglass material are used, and the bottom plate of the rail vehicle equipment compartment is made of a foam structure layer. It can not only meet the high-quality and high-requirement regulations such as intelligence, green environmental protection, and sustainable development, but also reduce the weight of the vehicle body even if the high-tech equipment on the vehicle is increased, and effectively prevent the impact of foreign objects splashing on the rail surface, and it is easier to repair damage.

[0017] In the solution provided in the second aspect of the embodiment of the present invention, since an equipment compartment damping beam is connected above the bottom plate of the equipment compartment of the rail vehicle, the up and down amplitude generated by the vehicle during high-speed operation can be effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A cross-sectional schematic diagram of a rail vehicle equipment cabin bottom plate provided by an embodiment of the present invention is shown;

[0020] Figure 2 A top view of a bottom plate of a rail vehicle equipment compartment provided by an embodiment of the present invention is shown;

[0021] Figure 3 An AA cross-sectional view of a bottom plate of a rail vehicle equipment compartment provided by an embodiment of the present invention is shown;

[0022] Figure 4 A BB cross-sectional view of a bottom plate of a rail vehicle equipment compartment provided by an embodiment of the present invention is shown;

[0023] Figure 5 A top view of a rail vehicle equipment cabin floor structure provided by an embodiment of the present invention is shown;

[0024] Figure 6 A specific schematic diagram showing a rail vehicle equipment compartment bottom plate structure provided by an embodiment of the present invention, in which a connecting piece connects a rail vehicle equipment compartment bottom plate and an equipment compartment damping cross beam;

[0025] Figure 7 A schematic structural diagram of the connection between an equipment compartment damping crossbeam and an equipment compartment frame in a rail vehicle equipment compartment bottom plate structure provided by an embodiment of the present invention is shown;

[0026] Figure 8 A front view of a rail vehicle equipment compartment floor structure provided by an embodiment of the present invention is shown.

[0027] icon:

[0028] 1-rail vehicle equipment compartment bottom plate, 11-first skin, 12-second skin, 13-foam structure layer, 14-side frame, 15-end frame, 151-anti-drop pin, 16-inner nested cylinder, 17-side sealing strip, 18-end sealing strip, 2-equipment compartment damping beam, 3-connecting piece, 31-threaded block, 32-first bolt, 33-external sleeve, 34-first nut, 4-rubber pad, 5-second bolt, 6-second nut, 7-equipment compartment frame. DETAILED DESCRIPTION

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The embodiment of the present invention provides a rail vehicle equipment compartment bottom plate, see Figure 1 As shown, the rail vehicle equipment compartment bottom plate includes: a first skin 11, a second skin 12 and a foam structure layer 13; the first skin 11 and the second skin 12 are made of fiberglass reinforced plastic material; and the foam structure layer 13 is filled between the first skin 11 and the second skin 12.

[0033] The rail vehicle equipment cabin bottom plate provided in the embodiment of the present invention is a composite material bottom plate, such as Figure 1As shown, from top to bottom, there are the first skin 11, the foam structure layer 13 and the second skin 12, and the three-layer structure can be bonded by structural adhesive. Among them, the first skin 11 and the second skin 12 are made of glass fiber reinforced plastic material, which is a fiber reinforced plastic with the advantages of light weight and hardness, non-conductive, stable performance, high mechanical strength, less recycling, corrosion resistance, etc. Among them, the specific strength of the first skin 11 and the second skin 12 made of glass fiber reinforced plastic material is about 0.12N·m / kg, while the specific strength of the skin made of traditional metal materials (such as aluminum alloy materials) is about 0.1N·m / kg. The specific strength of glass fiber reinforced plastic material is higher than that of traditional metal materials, and its specific strength can reach the standard of high-grade alloy steel, but the density of the glass fiber reinforced plastic material is lower than that of traditional metal materials, so the self-weight of the first skin 11 and the second skin 12 made of the glass fiber reinforced plastic material can be made lighter and the tension is stronger. Among them, the thickness of the first skin 11 and the second skin 12 can be determined respectively according to the actual use of the bottom plate of the equipment compartment of the rail vehicle.

[0034] In the embodiment of the present invention, the first skin 11 can be represented as the upper skin of the equipment compartment bottom plate of the rail vehicle, and the second skin 12 is the lower skin of the equipment compartment bottom plate of the rail vehicle, wherein the second skin 12 needs to have certain impact resistance and anti-collision functions, therefore, the thickness of the second skin 12 is preferably greater than the thickness of the first skin 11; optionally, the thickness of the first skin 11 is between 0.5 mm and 3.5 mm, for example, it can be 0.5 mm, 1 mm, etc.; the thickness of the second skin 12 is between 1.5 mm and 3.5 mm, for example, it can be 1.5 mm, 2 mm, etc. Moreover, the thickness of the first skin 11 and the second skin 12 are respectively designed to be in the corresponding thickness value range, which is the result obtained after considering mechanical properties, cost, weight, processability and adaptability, etc., and can achieve the goal of optimal lightweight design to the greatest extent.

[0035] In addition, due to the particularity of the location of the bottom plate of the equipment compartment of the rail vehicle, it is more susceptible to damage such as impact vibration, impact of flying foreign objects, etc. during the high-speed operation of the train, resulting in its damage mainly being cracks or dents; and when the first skin 11 and the second skin 12 are made of fiberglass, a hand-paste repair method can be used for repair, with a resin mixture with a curing agent as the matrix and glass fiber and its fabric as the reinforcing material. The damaged area can be easily repaired by manually brushing and pasting glass fiber. Compared with skins made of traditional metal materials (such as aluminum alloy materials), the first skin 11 and the second skin 12 provided in the embodiment of the present invention are easier to repair.

[0036] like Figure 1As shown, in the rail vehicle equipment compartment bottom plate provided by the embodiment of the present invention, the foam structure layer 13 is filled between the first skin 11 and the second skin 12. For example, the foam layer 13 can be a structural layer composed of PET foam material, the main component of which is polyethylene terephthalate (Polyethylene terephthalate), commonly known as polyester resin. Since PET foam has good heat resistance, mechanical strength and environmental protection performance, the material is selected to form the foam structure layer 13 filled between the two layers of skin, which is easier to composite and has better performance. Optionally, the thickness of the foam structure layer 13 is between 23mm and 28mm, for example, it can be 25mm, 28mm, etc. Such a design can reduce the weight of the rail vehicle equipment compartment bottom plate to the greatest extent while meeting the standards of sound insulation indicators and aerodynamic requirements, so that the rail vehicle equipment compartment bottom plate not only meets various application requirements (such as various technical requirements of 200 km speed vehicles), but also can achieve the goal of reducing weight by 20% to 30% compared with the traditional bottom plate.

[0037] Alternatively, see Figure 2 and Figure 3 As shown, Figure 2 This is a top view of the bottom plate of the equipment compartment of the rail vehicle. Figure 3 It is an AA cross-sectional view of the rail vehicle equipment compartment floor; wherein, the rail vehicle equipment compartment floor further comprises: a side frame 14; the side frame 14 is disposed in close contact with the lateral side of the rail vehicle equipment compartment floor.

[0038] Since the rail vehicle equipment compartment floor is a component fixedly installed in the rail vehicle, this embodiment describes the installation direction of the rail vehicle equipment compartment floor according to the transverse and longitudinal directions of the rail vehicle; wherein the longitudinal direction refers to the direction from the front of the vehicle to the rear of the vehicle, and the transverse direction refers to the direction perpendicular to the longitudinal direction. Figure 2 The vertical direction represents the horizontal direction, and the left-right direction represents the longitudinal direction. The bottom plate of the equipment compartment of the rail vehicle has two horizontal sides ( Figure 2 ), and two longitudinal sides ( Figure 2 The shorter side is shown in the left-right direction in FIG.

[0039] A side frame 14 may be provided on the lateral side of the bottom plate of the equipment compartment of the rail vehicle, for example Figure 3 As shown, the side frame 14 is bonded to the lateral side of the foam structure layer 13 by means of structural adhesive, and the first skin 11 and the second skin 12 can cover part of the side frame 14 (such as the upper and lower surfaces of the side frame 14) to protect the side frame 14. The side frame 14 can improve the strength of the bottom plate of the rail vehicle equipment compartment.

[0040] Alternatively, see Figure 2 and Figure 4 As shown, Figure 4 The BB cross-sectional view of the rail vehicle equipment compartment bottom plate is shown in FIG. The rail vehicle equipment compartment bottom plate further comprises: an end frame 15; the end frame 15 is arranged in close contact with the longitudinal side of the rail vehicle equipment compartment bottom plate.

[0041] The end frame 15 can be arranged on the longitudinal side of the bottom plate of the equipment compartment of the rail vehicle, for example, Figure 4 As shown, the end frame 15 is attached to the longitudinal side of the foam structure layer 13 by means of structural adhesive bonding, and the first skin 11 and the second skin 12 can cover the upper and lower surfaces of the end frame 15 to protect the end frame 15. When it is necessary to connect the bottom plate of the equipment compartment of the rail vehicle with the frame of the equipment compartment (i.e., the frame of the entire equipment compartment), the end frame 15 can be used to achieve this requirement. Specifically, Figure 2 As shown, an anti-drop pin 151 can be fixed inside the end frame 15, so that the anti-drop pin 151 is inserted into the equipment compartment frame, and is used to connect the end frame 15 with the equipment compartment frame to prevent the rail vehicle equipment compartment bottom plate from falling onto the track. In addition, the end frame 15 can also improve the strength of the rail vehicle equipment compartment bottom plate.

[0042] Alternatively, see Figure 3 As shown, the rail vehicle equipment compartment bottom plate also includes: a side sealing strip 17, the side sealing strip 17 is arranged on the side of the side frame 14 away from the foam structure layer 13; Figure 4 As shown, the rail vehicle equipment compartment bottom plate also includes: an end sealing strip 18, and the end sealing strip 18 is arranged between the end frame 15 and the equipment compartment frame.

[0043] Among them, Figure 3 As shown, a side sealing strip 17 can be provided on the side of the side frame 14 away from the foam structure layer 13. By providing the side sealing strip 17, the side sealing strip 17 between two adjacent rail vehicle equipment compartment bottom plates can be squeezed tighter, so as to seal the side frame 14 at the connection position of the two adjacent rail vehicle equipment compartment bottom plates. Similarly, by providing the end sealing strip 18, the rail vehicle equipment compartment bottom plate can be more tightly connected to the equipment compartment frame, wherein, as Figure 4 As shown, the end sealing strip 18 can be disposed on the upper surface of the corresponding end frame 15 , for example, on the side of the end frame 15 away from the second skin 12 .

[0044] Alternatively, see Figure 2As shown, the rail vehicle equipment compartment floor also includes: an inner nested tube 16; the inner nested tube 16 is vertically and embedded through the longitudinal center line of the rail vehicle equipment compartment floor; or, is symmetrically vertically and embedded through the two sides of the relatively longitudinal center line; the inner nested tube 16 is used to be connected to the equipment compartment damping beam.

[0045] like Figure 2 As shown, one or more through holes may be provided on the longitudinal center line of the equipment compartment bottom plate of the rail vehicle, and the inner nested tube 16 may be vertically and penetrated into the through holes; or, multiple through holes symmetrically along the longitudinal center line of the equipment compartment bottom plate of the rail vehicle may be provided on both sides of the longitudinal center line of the equipment compartment bottom plate of the rail vehicle, for example, in the transverse direction perpendicular to the longitudinal center line, and the inner nested tube 16 may be vertically and penetrated into these through holes. In the case where the equipment compartment bottom plate of the rail vehicle is connected to the equipment compartment damping cross beam, if there is no inner nested tube 16, the stability of the connection position will be poor, while when the inner nested tube 16 is provided, the strength of the area in the equipment compartment bottom plate of the rail vehicle can be ensured to be greater, making the connection more stable.

[0046] The present invention also provides a rail vehicle equipment compartment floor structure, see Figure 5 As shown, Figure 5 It is a top view of the rail vehicle equipment compartment floor structure, and the rail vehicle equipment compartment floor structure includes: a rail vehicle equipment compartment floor 1 with an inner nested tube 16, an equipment compartment damping beam 2 and a connector 3; the connector 3 is used to connect the rail vehicle equipment compartment floor 1 and the equipment compartment damping beam 2.

[0047] like Figure 5 As shown, in the case where the first skin 11 of the rail vehicle equipment compartment bottom plate 1 is used as the upper skin, one or more damping beams connected to the rail vehicle equipment compartment bottom plate are arranged above the first skin 11, namely, the equipment compartment damping beams 2, and each equipment compartment damping beam 2 can be a U-shaped bending structure (such as Figure 8 As shown in the figure, the rail vehicle equipment compartment floor plate 1 can be fixed by the equipment compartment damping crossbeam 2, and the rail vehicle equipment compartment floor plate 1 and the equipment compartment damping crossbeam 2 can be connected to each other by a connector 3. In the rail vehicle equipment compartment floor plate structure provided in the embodiment of the present invention, since the equipment compartment damping crossbeam 2 is connected above the rail vehicle equipment compartment floor plate 1, the up and down amplitude generated by the vehicle during high-speed operation can be effectively reduced.

[0048] Alternatively, see Figure 6 As shown, Figure 6The figure is a specific schematic diagram of using the connector 3 to connect the rail vehicle equipment compartment bottom plate 1 and the equipment compartment damping cross beam 2. The connector 3 includes: a threaded block 31, a first bolt 32, an external sleeve 33 and a first nut 34; wherein the threaded block 31 is a steel block with a threaded hole, which is arranged at a position corresponding to the inner nesting tube 16 in the equipment compartment damping cross beam 2; the external sleeve 33 is nested inside the nesting tube 16, and the first bolt 32 is inserted through the threaded block 31, the inner nesting tube 16, the external sleeve 33 and the first nut 34.

[0049] The connector 3 includes multiple parts, and different parts can be located on the equipment compartment damping cross beam 2 or the rail vehicle equipment compartment bottom plate 1, or can pass through the equipment compartment damping cross beam 2 and the rail vehicle equipment compartment bottom plate 1. A threaded block 31 is provided on the side of the equipment compartment damping cross beam 2 away from the rail vehicle equipment compartment bottom plate 1. The threaded block 31 is a steel block with threaded holes, which is a part screwed together with bolts or screws for fastening. Figure 6As shown, after the thread block 31 is used for tightening, the position of the thread block 31 in the equipment compartment damping cross beam 2 will gradually approach the rail vehicle equipment compartment bottom plate 1, and since the position of each inner nested tube 16 on the rail vehicle equipment compartment bottom plate 1 can be used as an installation point connected to the equipment compartment damping cross beam 2, the thread block 31 is arranged relative to (aligned with) the inner nested tube 16 in the rail vehicle equipment compartment bottom plate 1, which can assist in connecting and installing the rail vehicle equipment compartment bottom plate 1 with the equipment compartment damping cross beam 2; in the rail vehicle equipment The cabin bottom plate 1 is provided with an external sleeve 33 at a position contained in the inner nested tube 16 thereof. The external sleeve 33 is embedded in the inner nested tube 16 and used in cooperation with each other. It can not only provide an installation space for the first bolt 32 inserted through the equipment cabin damping beam 2 and the rail vehicle equipment cabin bottom plate 1, but also increase the contact area between the fastening parts (such as gaskets or the first nut 34 provided in an embodiment of the present invention) and the inner nested tube 16, compared with the case where there is no external sleeve 33 and the first bolt 32 is directly fastened to the inner nested tube 16. For example, when there is no external sleeve 33 and the first bolt 32 is directly fastened to the inner nested tube 16, the contact area between the first nut 34 or gasket and the inner nested tube 16 is determined by the area of ​​the first nut 34 or gasket; and when the external sleeve 33 is used in conjunction with the inner nested tube 16, the contact area between the first nut 34 or gasket and the inner nested tube 16 during tightening is provided by the thickness of the external sleeve 33, so that the contact area becomes larger, which can effectively avoid the loosening of the first bolt 32 caused by long-term vibration and is beneficial to improving the stability here after tightening. In addition, in the embodiment of the present invention, after the first bolt 32 is set, the first nut 34 can be installed on the side of the rail vehicle equipment compartment bottom plate 1 close to the second skin 12, such as installing the first nut 34 on the end of the first bolt 32 close to the second skin 12. This can facilitate the installation and disassembly of the rail vehicle equipment compartment bottom plate 1. For example, the first nut 34 can be directly unscrewed from the bottom of the vehicle (such as below the rail vehicle equipment compartment bottom plate 1), thereby removing the rail vehicle equipment compartment bottom plate 1.

[0050] Optionally, the equipment compartment damping cross beam 2 is made of glass fiber reinforced plastic material. The equipment compartment damping cross beam 2 can also be made of the same material as the rail vehicle equipment compartment bottom plate 1, that is, the equipment compartment damping cross beam 2 can also be made of glass fiber reinforced plastic material, so that the equipment compartment damping cross beam 2 has a higher specific strength and can also reduce its own weight.

[0051] Alternatively, see Figure 6As shown, the rail vehicle equipment compartment floor structure may further include: a rubber pad 4; the rubber pad 4 is arranged between the rail vehicle equipment compartment floor 1 and the equipment compartment damping cross beam 2. The rubber pad 4 can be used to fill the gap between the rail vehicle equipment compartment floor 1 and the equipment compartment damping cross beam 2, so that the two parts fit tightly together, and the amplitude and noise generated during the high-speed operation of the vehicle can be reduced.

[0052] Alternatively, see Figure 7 and Figure 8 As shown, Figure 7 It is a structural schematic diagram of the connection between the equipment cabin damping cross beam and the equipment cabin frame (i.e. the overall structure of the equipment cabin); Figure 8 It is a front view of a rail vehicle equipment compartment floor structure including a rail vehicle equipment compartment floor 1, an equipment compartment damping cross beam 2, a connector 3 and an equipment compartment frame 7. The rail vehicle equipment compartment floor structure may further include: a second bolt 5 and a second nut 6; the second bolt 5 is used to penetrate and insert into the fastening point of the equipment compartment damping cross beam 2, the connection point of the equipment compartment frame 7 corresponding to the fastening point and the second nut 6 to connect the equipment compartment damping cross beam 2 and the equipment compartment frame 7; the fastening points are located at both ends of the equipment compartment damping cross beam 2.

[0053] There is at least one fastening point at each end of the equipment compartment damping beam 2, and each fastening point is arranged opposite to a connection point on the equipment compartment frame 7. When multiple groups of corresponding fastening points and connection points are used to connect the equipment compartment damping beam 2 and the equipment compartment frame 7, the arrangement position of each group of fastening points and connection points is not limited, and they can be arranged in the horizontal direction or in the vertical direction. Figure 7 As shown, a group of correspondingly arranged fastening points and connection points can be connected by a group of second bolts 5 and second nuts 6, that is, the second bolts 5 are inserted through a fastening point of the equipment cabin damping cross beam 2 and a connection point of the equipment cabin frame 7 corresponding to the fastening point, and fastened by the second nuts 6. Wherein, when the second bolts 5 and the second nuts 6 are used for fixing, washers can also be used for matching and fastening.

[0054] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technical solution that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A rail vehicle equipment cabin floor structure, characterized in that: include: A rail vehicle equipment compartment bottom plate (1), an equipment compartment damping cross beam (2) and a connecting piece (3); the connecting piece (3) is used to connect the rail vehicle equipment compartment bottom plate (1) and the equipment compartment damping cross beam (2); the equipment compartment damping cross beam (2) is connected above the rail vehicle equipment compartment bottom plate (1); The rail vehicle equipment cabin bottom plate (1) comprises: a first skin (11), a second skin (12) and a foam structure layer (13); the first skin (11) and the second skin (12) are made of glass fiber reinforced plastic material; Filling the foam structure layer (13) between the first skin (11) and the second skin (12); It also includes: a side frame (14); the side frame (14) is arranged in close contact with the lateral side of the bottom plate of the equipment compartment of the rail vehicle; It also includes: an end frame (15); the end frame (15) is arranged in close contact with the longitudinal side of the rail vehicle equipment compartment bottom plate; the rail vehicle equipment compartment bottom plate (1) is connected to the equipment compartment frame by using the end frame (15); The side frame (14) is bonded to the lateral side of the foam structure layer (13) by means of structural adhesive, and the first skin (11) and the second skin (12) cover the upper and lower surfaces of the side frame (14) to protect the side frame (14); The end frame (15) is bonded to the longitudinal side of the foam structure layer (13) by means of structural adhesive, and the first skin (11) and the second skin (12) cover the upper and lower surfaces of the end frame (15) to protect the end frame (15); It also includes: a side sealing strip (17) and an end sealing strip (18); The side sealing strip (17) is arranged on a side of the side frame (14) away from the foam structure layer (13); The end sealing strip (18) is arranged between the end frame (15) and the equipment cabin frame; It also includes: an inner nesting tube (16); the inner nesting tube (16) is vertically and penetratedly embedded on the longitudinal center line of the rail vehicle equipment compartment bottom plate; or is symmetrically and vertically embedded on both sides relative to the longitudinal center line. The inner nested cylinder (16) is used to be connected to the equipment cabin damping cross beam (2); The connecting member (3) comprises: a threaded block (31), a first bolt (32), an external sleeve (33) and a first nut (34); The threaded block (31) is a steel block with a threaded hole, and is arranged in a position corresponding to the inner nested tube (16) in the equipment cabin damping cross beam (2); the outer sleeve (33) is nested inside the inner nested tube (16), and the first bolt (32) is inserted through the threaded block (31), the inner nested tube (16), the outer sleeve (33) and the first nut (34); The first nut (34) is installed on an end of the first bolt (32) close to the second skin (12).

2. The rail vehicle equipment compartment floor structure according to claim 1, characterized in that: The thickness of the first skin (11) is between 0.5 mm and 3.5 mm; the thickness of the second skin (12) is between 1.5 mm and 3.5 mm.

3. The rail vehicle equipment compartment floor structure according to claim 1, characterized in that: The thickness of the foam structure layer (13) is between 23 mm and 28 mm.

4. The rail vehicle equipment compartment floor structure according to claim 1, characterized in that: The equipment cabin damping cross beam (2) is made of glass fiber reinforced plastic material.

5. The rail vehicle equipment compartment floor structure according to claim 1, characterized in that: Also includes: A rubber pad (4); the rubber pad (4) is arranged between the rail vehicle equipment compartment bottom plate (1) and the equipment compartment damping cross beam (2).

6. The rail vehicle equipment compartment floor structure according to claim 1, characterized in that: It is characterized by further comprising: a second bolt (5) and a second nut (6); The second bolt (5) is used to penetrate the fastening point of the equipment compartment damping beam (2), the connection point of the equipment compartment frame (7) corresponding to the fastening point, and the second nut (6) to connect the equipment compartment damping beam (2) and the equipment compartment frame (7); the fastening points are located at both ends of the equipment compartment damping beam (2).

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