Walking board assembly and fire fighting truck

Abstract

The invention discloses a walking board main vehicle and a fire fighting truck in the field of vehicle equipment.The walking board main vehicle comprises a walking board main body, the walking board main body is laid on an auxiliary frame of the vehicle in the longitudinal direction from the head to the tail of the vehicle, and a keel supporting frame used for supporting the walking board main body is installed on the side face of the auxiliary frame; the two sides of the walking board body are connected with the keel supporting frame. The walking board body comprises section bars and cross beams, each section bar is of a longitudinal long-strip structure, and the multiple section bars are sequentially connected in a lap joint mode on the transverse head side and the transverse tail side and are installed together through the cross beams. The walking board assembly comprises the walking board body, the walking board body comprises the cross beam and the sectional materials, the sectional materials are connected together through the cross beam, the cross beam is located between the sectional materials and the auxiliary frame, the structure on the auxiliary frame does not need to be provided with holes in the sectional materials, the structural strength of the sectional materials is ensured, the sectional materials are of a longitudinal structure, and the structural strength of the sectional materials is ensured. And the deformation degree of the section bar along with the deformation of the auxiliary frame is reduced.

Description

Technical Field

[0001] This invention relates to the field of vehicle equipment, and more particularly to a platform assembly and a fire truck. Background Technology

[0002] Fire truck platform assemblies typically employ a frame 14 + panel 15 structure, with the gap between the frame 14 and panel 15 concealed and aesthetically pleasing by a surrounding edge 16. For example... Figure 13 As shown, frame 14, as the main load-bearing component, is installed on the fire truck's subframe to support the cover panel 15 and provides a lifting surface for functional components such as the vehicle's perimeter panels, side ladders, and equipment boxes. The cover panel 15, used for walking and stepping by operating and maintenance personnel, is fixed to frame 13 using a splicing method to form a continuous walking surface. As a planar welded component, frame 14 often experiences deformation in multiple directions during production. This deformation necessitates numerous modifications during the installation of the cover panel 15, and the installation of the perimeter panels is also affected by the flatness and length of the frame, requiring on-site adjustments. The perimeter edging cannot even be pre-cut according to the drawings and must be made on-site. Excessive modifications and on-site adjustments reduce production efficiency and increase product costs.

[0003] Existing modular walkway structures, such as Figure 10 , Figure 11 , Figure 12 As shown, a standard transverse profile 11 is used, which is installed transversely on the subframe from front to back. For the protrusions and bolt heads on the subframe, corresponding holes need to be drilled in the profile. A turntable opening 13 corresponding to the turntable structure is also provided. This weakens the overall structural strength of the profile, and the transversely laid profile will deform with the deflection of the subframe, such as... Figure 12 As shown, the hoisted panels, side ladders, and equipment boxes lose their flat mounting plane, causing each hoisting component to move along with the deformation of the subframe, ultimately leading to damage. Summary of the Invention

[0004] The purpose of this invention is to provide a platform assembly and a fire truck, wherein the profiles are connected and supported by crossbeams, thereby improving the overall structural strength of the platform body and reducing the degree of deformation of the platform body following the subframe.

[0005] To solve the above technical problems, the following technical solution is adopted: In a first aspect, the present invention provides a walkway assembly, including a walkway body, the walkway body being laid longitudinally along the front to the rear of the vehicle on the vehicle subframe, the side of the subframe being equipped with a keel support frame for supporting the walkway body, and the two sides of the walkway body being connected to the keel support frame. The main body of the walkway includes profiles and crossbeams. The profiles are longitudinal strip structures. Several profiles are sequentially overlapped at both ends and installed together through the crossbeams. The crossbeams also serve to separate the profiles from the subframe. The profiles do not directly contact the subframe to avoid deformation together with the subframe. There is a gap between the subframe and the profiles. The bolt heads and protrusions on the subframe do not need to be drilled in the profiles, ensuring the structural strength of the profiles.

[0006] The profile has a double-layer structure with a gap between the upper and lower layers, and the crossbeam is connected to the lower layer of the profile by a fastener.

[0007] Optionally, anti-slip teeth are evenly arranged on the upper surface of the profile, and anti-slip grooves are evenly milled on the anti-slip teeth.

[0008] Optionally, the profile includes a first profile, a second profile, and a third profile. The first and second profiles are used at the beginning and end of both sides of the main body of the walkway, while the first and second profiles are used in combination in the middle.

[0009] Optionally, one end of the third profile is provided with two LED strip mounting slots, which are arranged longitudinally on the third profile. LED lights are installed in the LED strip mounting slots, and the LED lights in the two LED strip mounting slots illuminate upwards and downwards, respectively.

[0010] Optionally, the upper layer of the first profile has outwardly extending overlapping edges on both sides; the upper layer of the second profile has an outwardly extending overlapping edge on one side and an inwardly recessed groove on the other side, the groove engaging with the overlapping edge on the adjacent first or second profile. In the middle of the platform body, both sides of the first profile are spliced ​​with the second profile. The side of the second profile with the overlapping edge is spliced ​​with the second profile, and the side with the groove is spliced ​​with either the second profile or the first profile. The overlapping edges on both sides of the first profile ensure that the profiles spliced ​​on both sides have the same height.

[0011] Optionally, the lower layers of both the second and third profiles are provided with mounting grooves, and the crossbeam is connected to the lower layers of the profiles by fastening bolts, which are installed in the mounting grooves. The first profile is used to align the height of the profiles on its adjacent sides.

[0012] Optionally, the second profile has two mounting grooves arranged laterally, and the third profile has three mounting grooves arranged laterally. At least one mounting groove on the third profile is connected to the keel support frame by fastening bolts.

[0013] In a second aspect, the present invention provides a fire truck, including the platform assembly described in the first aspect.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: 1. The platform assembly provided by the present invention includes a platform body, which includes a crossbeam and profiles. The profiles are connected together by the crossbeam, and the crossbeam is located between the profiles and the subframe, which can support the profiles and prevent them from contacting the subframe. The structure on the subframe does not need to be drilled in the profiles, ensuring the structural strength of the profiles. The profiles are longitudinal structures and are arranged on the vehicle subframe, reducing the degree of deformation of the profiles with the subframe. The structure is simple and easy to install, improving installation efficiency.

[0015] 2. The walkway assembly provided by the present invention adopts a mixed splicing of the first profile, the second profile and the third profile, which can ensure the overall structural strength of the walkway body, the flatness of the structure, and LED lights can be installed on both sides of the walkway body for illumination. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the main body of the walkway in an embodiment of the present invention; Figure 2 This is a partially enlarged structural schematic diagram of the main body of the walkway in an embodiment of the present invention; Figure 3 This is a side view of the main body of the walkway in an embodiment of the present invention; Figure 4 This is a partial cross-sectional structural diagram of the main body of the walkway plate in an embodiment of the present invention; Figure 5 This is a schematic diagram of the first profile structure in an embodiment of the present invention; Figure 6 This is a schematic diagram of the second profile structure in an embodiment of the present invention; Figure 7 This is a schematic diagram of the third profile structure in an embodiment of the present invention; Figure 8 This is a schematic diagram of the layout structure of the keel support frame on the subframe in an embodiment of the present invention. Figure 9 This is a schematic diagram of the installation structure of the platform body and the subframe in an embodiment of the present invention; Figure 10 This is a schematic diagram of the arrangement structure of the platform assembly on a vehicle in the background art of this invention; Figure 11 This is a schematic diagram of the horizontal profile splicing structure in the background art of this invention; Figure 12 This is a schematic diagram of the deformation structure of the transverse profile and subframe in the background technology of this invention; Figure 13 This is a schematic diagram of the mask-frame type walkway structure in the background art of this invention.

[0017] Explanation of reference numerals in the attached figures: 1. Main body of the platform; 2. Subframe; 3. Profile; 31. Upper layer; 32. Lower layer; 33. Overlap edge; 34. Groove; 35. Mounting slide; 36. Anti-slip teeth; 37. Anti-slip groove; 38. Light strip mounting groove; 4. Crossbeam; 5. Fastening bolt; 6. First profile; 7. Second profile; 8. Third profile; 9. Turntable structure; 10. Keel support frame; 11. Horizontal profile; 12. Lifting hole; 13. Turntable hole; 14. Frame; 15. Cover plate; 16. Edge. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use.

[0019] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the invention and simplifying the description, 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, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] Example 1

[0021] This embodiment provides a walkway assembly, including a walkway body 1. Several walkway bodies 1 are laid on the upper surface of the vehicle subframe 2. Each walkway body 1 is adapted to the structural arrangement of the upper surface of the subframe 2. A keel support frame 10 is installed on the side of the subframe 2. Several keel support frames 10 are evenly arranged on the side of the subframe 2. The keel support frames 10 are connected and fixed to the lower surface of the walkway body 1 by fasteners. The walkway body 1 is installed and supported by the keel support frames 10.

[0022] like Figure 1 As shown, the main body 1 of the walkway is composed of several profiles 3, crossbeams 4 and fasteners. The profiles 3 are longitudinal strip structures. Several profiles 3 are horizontally overlapped end to end and fixed together by crossbeams 4 and fasteners. Several crossbeams 4 are arranged at the bottom of the profiles 3 to fix the several profiles 3 together to form the main body 1 of the walkway.

[0023] Profile 3 has a double-layer structure with a gap between the upper layer 31 and the lower layer 32. The crossbeam 4 is installed to the lower layer 32 of profile 3 by means of fasteners.

[0024] The walkway assembly provided in this embodiment has a main body 1 laid on the subframe 2, but not directly connected to it. Instead, it is supported and fixed in position by a keel support frame 10. The fact that the main body 1 is not directly mounted on the subframe 2 reduces the degree of deformation of the main body 1 due to deformation of the subframe 2, thus minimizing the impact of subframe 2 deformation on the main body 1. The profiles 3 constituting the main body 1 have a double-layer structure. When the subframe 2 deforms due to the equipment on it, the deformation transmitted to the upper surface of the main body 1 is smaller. A gap is left between the upper layer 31 and the lower layer 32 of the profile 3 to facilitate the installation of fasteners on the crossbeams 4 without affecting the structural strength of the upper surface of the profile 3. Several crossbeams 4 are arranged below the main body 1, which can suspend the walkway by a certain distance. The main body 1 does not need to be perforated to accommodate certain structures on the subframe 2, improving the structural stability of the main body 1.

[0025] Example 2

[0026] This embodiment provides a platform assembly based on Embodiment 1, such as... Figure 4 , Figure 5 , Figure 6 , Figure 7As shown, the main body 1 of the walkway uses three types of profiles 3: a first profile 6, a second profile 7, and a third profile 8. The differences between the three profiles 3 are as follows: the upper layer 31 of the first profile 6 has outwardly extending overlapping edges 33 on both sides; the upper layer 31 of the second profile 7 has an outwardly extending overlapping edge 33 on one side and an inwardly recessed groove 34 on the other side, which is adapted to either the overlapping edge 33 on the first profile 6 or the overlapping edge 33 on the second profile 7. The overlapping edge 33 on the first profile 6 is the same as the overlapping edge 33 on the second profile 7. The third profile 8 has the same groove 34 as the second profile 7 on one side and two LED strip mounting slots 38 on the other side. One LED strip mounting groove 38 is located on the upper surface of the third profile 8, and the other is located on the end of the extension frame of the third profile 8. The extension frame extends downward from the side of the third profile 8. LEDs are installed in the LED strip mounting groove 38. The LEDs located on the upper surface of the third profile 8 illuminate upward, and the LEDs located at the end of the extension frame illuminate downward. The overlapping edges 33 on the first profile 6 and the second profile 7 can both mate with the grooves 34 on the second profile 7 and the third profile 8.

[0027] like Figure 6 , Figure 7 , Figure 8 , Figure 9 As shown, two mounting grooves 35 are spaced apart on the lower layer 32 of the second profile 7, and three mounting grooves 35 are spaced apart on the lower layer 32 of the third profile 8. The mounting grooves 35 are arranged longitudinally on the profile 3, and the transversely arranged beams 4 are mounted on the lower surface of the profile 3 through the mounting grooves 35 and fasteners. In this embodiment, the fasteners are fastening bolts 5. At least one mounting groove 35 on the third profile 8 is connected to the fastening bolts 5 on the keel support frame 10.

[0028] like Figure 3 , Figure 4 , Figure 5As shown, the main body 1 of the walkway panel is constructed using a combination of first profile 6, second profile 7, and third profile 8. The third profile 8 is used at both ends of the main body 1, with the side of the third profile 8 containing the LED strip mounting groove 38 located on the outer side of the main body 1. The middle section of the main body 1 uses a combination of first profile 6 and second profile 7. Both sides of the first profile 6 need to be joined to the side of the second profile 7 with the groove 34. The side of the second profile 7 with the overlapping edge 33 needs to be joined to the side of the second profile 7 with the groove 34. The side with the groove 34 can be joined to either the first profile 6 or the side of the second profile 7 with the overlapping edge 33. By using the first profile 6 in the middle section of the main body 1, the heights of the second profiles 7 on both sides of the first profile 6 are aligned, avoiding uneven heights among the profiles 3. The lower layer 32 of the first profile 6 does not have a mounting groove 35 and is not connected to the crossbeam 4. The lower layers 32 of the second profile 7 and the third profile 8 have mounting grooves 35. The second profile 7 and the third profile 8 are fixedly connected to the crossbeam 4 by fastening bolts 5, which are installed within the mounting grooves 35. In the middle of the platform body 1, one first profile 6 can be installed at intervals of one or more second profiles 7.

[0029] like Figure 2 , Figure 4 As shown, anti-slip teeth 36 are evenly arranged longitudinally on the upper surface of the upper layer 31 of the first profile 6, the second profile 7 and the third profile 8. The anti-slip teeth 36 are arranged longitudinally on the profile 3. In order to further increase the anti-slip function, evenly distributed anti-slip grooves 37 can be milled on the anti-slip teeth 36 to improve the anti-slip ability.

[0030] The crossbeam 4 is made of channel aluminum or angle aluminum, and its cross-sectional specifications can be adjusted according to product requirements. The crossbeam 4 can connect and fix several profiles 3 on one hand, and support the profiles 3 on the other hand. The main body of the platform plate 1 is supported by the crossbeam 4 below it, so that there is a certain gap between the main body of the platform plate 1 and the vehicle subframe 2. The bolt heads and protrusions on the subframe 2 will not affect the structure of the main body of the platform plate 1. For large structures on the subframe 2, such as the turntable structure 9, the main body of the platform plate 1 is arranged in the front and rear areas of the turntable structure 9 respectively, and the ends of the two main bodies of the platform plate 1 located on both sides of the turntable are adapted to be cut for the turntable structure 9. The cut profiles 3 can be connected and fixed with crossbeams 4 of different lengths to ensure the structural strength of the main body of the platform plate 1 and to withstand the layout of equipment boxes on the side of the turntable. The subframe bears the weight of various structures on it and will deform longitudinally during use. In this embodiment, each profile 3 is longitudinally laid out and laterally spliced, and is not directly connected to the subframe 2. The profile 3 is an integral structure in the longitudinal direction and does not contact the subframe 2, so it will not deform with the deformation of the subframe 2. A walkway body 1 is set at the front and rear of the turntable structure 9 and laid on the upper surface of the subframe 2. Each walkway body 1 is connected to the keel support frame 10 on the side of the subframe 2 by fastening bolts 5. The deformation of the subframe 2 due to its structure will not be directly transmitted to the walkway body 1, but a small amount of deformation will be transmitted through the keel support frames 10 on both sides.

[0031] When in use, several platform main bodies 1 adapted to the vehicle can be assembled first, and then hoisted onto the vehicle's subframe 2 as a whole. The structure is simple, easy to install, and widely applicable, which greatly improves assembly efficiency while reducing design and processing costs.

[0032] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A walkway assembly, characterized in that, The vehicle includes a platform body, which is laid longitudinally on the vehicle's subframe from the front to the rear. A keel support frame for supporting the platform body is installed on the side of the subframe, and the two sides of the platform body are connected to the keel support frame. The main body of the platform includes profiles and crossbeams. The profiles are longitudinal strip structures. Several profiles are sequentially overlapped on both ends and installed together through the crossbeams. The crossbeams are also used to separate the profiles from the subframe support. The profile has a double-layer structure with a gap between the upper and lower layers, and the crossbeam is connected to the lower layer of the profile by a fastener.

2. The walkway assembly according to claim 1, characterized in that, The upper surface of the profile is uniformly arranged with anti-slip teeth, and anti-slip grooves are uniformly milled on the anti-slip teeth.

3. The walkway assembly according to claim 1, characterized in that, The profiles include a first profile, a second profile, and a third profile. The first and second profiles are used at the beginning and end of both sides of the main body of the walkway. The first and second profiles are used in combination in the middle.

4. The walkway assembly according to claim 3, characterized in that, Two LED strip mounting slots are provided at one end of the third profile. The LED strip mounting slots are arranged longitudinally on the third profile. LED lights are installed in the LED strip mounting slots, and the two LED lights in the two LED strip mounting slots illuminate upward and downward respectively.

5. The walkway assembly according to claim 3, characterized in that, The upper layer of the first profile has outwardly extending overlapping edges on both sides; the upper layer of the second profile has an outwardly extending overlapping edge on one side and an inwardly recessed groove on the other side, the groove engaging with the overlapping edge on the adjacent first or second profile. In the middle of the main body of the walkway, both sides of the first profile are spliced ​​with the second profile. The side of the second profile with the overlapping edge is spliced ​​with the second profile, and the side with the groove is spliced ​​with the second profile or the first profile.

6. The walkway assembly according to claim 3, characterized in that, The lower layers of the second and third profiles are provided with mounting grooves. The crossbeam is connected to the lower layer of the profile by fastening bolts, which are installed in the mounting grooves. The first profile is used to align the height of the profiles on its adjacent sides.

7. The walkway assembly according to claim 6, characterized in that, The second profile has two mounting grooves arranged laterally, and the third profile has three mounting grooves arranged laterally. At least one mounting groove on the third profile is connected to the keel support frame by fastening bolts.

8. A fire truck, characterized in that, Includes the walkway assembly as described in any one of claims 1-7.

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