A fire truck liquid tank bottom bracket

Abstract

The utility model relates to vehicle structure technical field provides a fire engine liquid tank bottom bracket, include: a plurality of main girder is parallel to each other, main girder is the sheet metal bending structure of integrated molding, main girder connecting piece is provided with a plurality, a plurality of main girder connecting piece is along the length direction interval of main girder Setting, and the both ends of each main girder connecting piece are fixedly connected with two main girders located at the most outside respectively, reinforcing rib is set up at the junction of main girder and main girder connecting piece, and reinforcing rib is connected with main girder and main girder connecting piece, first connecting structure is set up on main girder and / or main girder connecting piece, is used for with liquid tank bottom detachable connection, second connecting structure is set up at the bottom of main girder, is used for with frame vice girder detachable connection, the utility model reduces the welding workload, and the bearing capacity and the deformation resistance of the overall structure of bracket are greatly promoted, the quick assembly and disassembly of bracket and liquid tank bottom, frame vice girder are convenient, promote whole car assembly efficiency, shorten maintenance time, reduce the operation and maintenance cost of fire engine.

Description

Technical Field

[0001] This utility model relates to the field of vehicle structure technology, and in particular to a bottom bracket for a liquid tank in a fire truck. Background Technology

[0002] In production, the liquid tank support structure of fire trucks is of paramount importance. Traditional fire truck liquid tank bracket structures are mostly made by splicing and welding multiple metal plates and profiles. This type of structure involves a large amount of welding work, is prone to stress concentration and welding deformation, resulting in low product efficiency, large dimensional errors and other shortcomings. In addition, it is not convenient to install and maintain, which increases the operation and maintenance costs and time costs of fire equipment. Utility Model Content

[0003] This utility model provides a bottom bracket for a liquid tank in a fire truck, which solves the defects of poor stability and safety of liquid tanks in existing fire trucks, thereby reducing the risk of damage to the liquid tank.

[0004] This utility model provides a bottom bracket for a liquid tank in a fire truck, comprising: Multiple main beams, which are parallel to each other, and the main beams are integrally formed sheet metal bending structures; The main beam connector is provided in multiple ways, and the multiple main beam connectors are spaced apart along the length direction of the main beam, and the two ends of each main beam connector are respectively fixedly connected to the two outermost main beams; A reinforcing rib is provided at the connection between the main beam and the main beam connector, and the reinforcing rib is connected to the main beam and the main beam connector. A first connecting structure is provided on the main beam and / or the main beam connector for detachable connection with the bottom of the liquid tank. The second connecting structure is located at the bottom of the main beam and is used for detachable connection with the sub-beam of the frame.

[0005] The fire truck liquid tank bottom bracket provided by this utility model also includes: An elastic support member is provided, through which the main beam is connected to the sub-beam of the frame.

[0006] According to the bottom bracket for the liquid tank of the fire truck provided by this utility model, the main beam connector is vertically connected to the main beam.

[0007] According to the bottom bracket for the liquid tank of the fire truck provided by this utility model, the main beam is provided with a plurality of mounting slots along its length direction. The number of mounting slots is the same as the number of main beam connectors and their positions correspond one-to-one. The mounting slots are adapted to the main beam connectors.

[0008] According to the bottom bracket for the liquid tank of the fire truck provided by this utility model, the first connecting structure is a plurality of first connecting holes provided on the main beam and / or the main beam connector, and the first connecting holes correspond to the mounting holes at the bottom of the liquid tank.

[0009] The fire truck liquid tank bottom bracket provided by this utility model The second connection structure consists of multiple second connection holes located at the bottom of the main beam, which correspond to the mounting holes of the sub-beam of the frame.

[0010] According to the bottom bracket for the liquid tank of the fire truck provided by this utility model, the second connecting hole is provided at the connection between the main beam and the main beam connector, and at the connection between the reinforcing rib and the main beam.

[0011] According to the fire truck liquid tank bottom bracket provided by this utility model, the elastic support member includes: A housing, the first end of which is connected to the subframe beam; A support shaft is movably disposed in the housing along the axial direction, and both ends of the support shaft are located outside the housing. The first end of the support shaft is used to connect with the main beam. An elastic element is sleeved on the support shaft, with its first end abutting against the second end of the housing and its second end abutting against the second end of the support shaft.

[0012] According to the bottom bracket for the liquid tank of the fire truck provided by this utility model, the main beam connecting member is set as a U-shaped structural member, and the opening of the U-shaped structural member is set towards the main beam.

[0013] According to the bottom bracket for the liquid tank of the fire truck provided by this utility model, the main beam is set as a Z-shaped structural member, including a top plate, a side plate and a bottom plate connected together, and at least the bottom plate and the side plate of the main beam are connected to the reinforcing rib.

[0014] This utility model provides a bottom bracket for a liquid tank on a fire truck. The main beam adopts an integrated sheet metal bending structure instead of the traditional multi-piece welded structure, reducing welding workload and avoiding stress concentration and welding deformation. At the same time, multiple main beams are fixed into a whole by main beam connectors, and the strength of the connection is reinforced with reinforcing ribs, which greatly improves the load-bearing capacity and deformation resistance of the overall bracket structure. The setting of the first connection structure and the second connection structure facilitates the quick assembly and disassembly of the bracket with the bottom of the liquid tank and the sub-beam of the vehicle frame, improving the assembly efficiency of the whole vehicle, shortening maintenance time, and reducing the operation and maintenance cost of the fire truck. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is an isometric view of a bottom bracket for a liquid tank in a fire truck, provided in an embodiment of this utility model.

[0017] Figure 2 This is a top view of a bottom bracket for a liquid tank in a fire truck, provided in an embodiment of this utility model.

[0018] Figure 3 This is a schematic diagram of the connection between the bracket and the liquid tank and the sub-beam of the vehicle frame provided in this embodiment of the utility model.

[0019] Figure 4 This is a structural schematic diagram of the elastic support member provided in an embodiment of the present invention.

[0020] Figure label: 1. Main beam; 2. Main beam connector; 3. Reinforcing rib; 4. First connecting structure; 5. Second connecting structure; 6. Sub-beam of the frame; 7. Elastic support component; 8. Shell; 9. Support shaft; 10. Elastic component. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] The following is combined with Figures 1-4 This utility model describes a bottom bracket for a liquid tank in a fire truck.

[0023] Reference Figures 1-2This utility model embodiment provides a bottom bracket for a liquid tank of a fire truck, including: multiple main beams 1, main beam connectors 2, reinforcing ribs 3, a first connecting structure 4, and a second connecting structure 5; at least one pair of main beams 1 are provided, the pair of main beams 1 are parallel to each other, and the main beams 1 are integrally formed sheet metal bending structures; multiple main beam connectors 2 are provided, the multiple main beam connectors 2 are spaced apart along the length direction of the main beams 1, and the two ends of each main beam connector 2 are respectively fixedly connected to the two outermost main beams 1; the reinforcing ribs 3 are provided at the connection between the main beams 1 and the main beam connectors 2, and the reinforcing ribs 3 are connected to the main beams 1 and the main beam connectors 2; the first connecting structure 4 is provided on the main beams 1 and / or the main beam connectors 2, for detachable connection with the bottom of the liquid tank; the second connecting structure 5 is provided at the bottom of the main beams 1, for detachable connection with the sub-beams 6 of the vehicle frame.

[0024] As can be seen from the above, the main beam 1 of this utility model adopts an integrated sheet metal bending structure to replace the traditional multi-plate welding structure, reducing the amount of welding work, avoiding stress concentration and welding deformation. At the same time, the main beam connector 2 fixes multiple main beams 1 into a whole, and the reinforcing ribs 3 strengthen the connection, which greatly improves the load-bearing capacity and deformation resistance of the overall structure of the bracket. The setting of the first connecting structure 4 and the second connecting structure 5 facilitates the quick assembly and disassembly of the bracket with the bottom of the liquid tank and the sub-beam 6 of the frame, improving the assembly efficiency of the whole vehicle, shortening the maintenance time, and reducing the operation and maintenance cost of the fire truck.

[0025] In addition, the structure in which multiple main beams 1 are arranged in parallel and fixed at intervals by main beam connectors 2 allows for flexible adjustment of the number of main beams 1, spacing and distribution of main beam connectors 2 according to the specifications of the liquid tank, adapting to liquid tanks of different sizes and improving the versatility and practicality of the bracket.

[0026] It should be noted that liquid tanks usually refer to PP liquid tanks, which are made of PP (polypropylene) and are used on fire trucks to hold fire extinguishing agents (such as water or foam). In firefighting operations, PP liquid tanks serve as storage containers for fire extinguishing agents.

[0027] In some embodiments, the main beam 1 and the main beam connector 2 are fixed by welding; and the reinforcing rib 3 is simultaneously connected to the main beam 1 and the main beam connector 2 by welding.

[0028] Furthermore, it also includes an elastic support member 7. The main beam 1 is connected to the sub-beam 6 of the frame through the elastic support member 7. The elastic support member 7 is used to elastically connect the main beam 1 and the sub-beam 6 of the frame to buffer the vibration and impact generated when the fire truck is driving and operating. The elastic support member 7, through its own elastic properties, forms a flexible connection between the main beam 1 and the sub-beam of the fire truck, reducing the vibration and structural impact of the liquid tank caused by the fire truck's acceleration, deceleration, turning and other working conditions, thereby improving the stability and safety of the liquid tank, reducing the risk of liquid tank damage, and ensuring the smooth progress of fire fighting operations.

[0029] In some embodiments, the main beam connector 2 and the main beam 1 have an included angle, which is an acute angle or a right angle. That is, the main beam connector 2 and the main beam 1 are connected perpendicularly or obliquely. Through the connection between the two, multiple parallel main beams 1 are firmly connected into an integral frame structure, which enhances the load-bearing capacity of the bracket for the liquid tank.

[0030] Preferably, the main beam connector 2 is vertically connected to the main beam 1. This vertical connection significantly improves the overall structural stability and torsional resistance of the bracket, enhances its load-bearing capacity for the liquid tank, and ensures that the bracket is not easily deformed under complex working conditions such as fire truck travel and operation. The vertical connection also minimizes the length of the main beam connector 2, reducing material costs and facilitating the positioning and fixing of the main beam 1 and the main beam connector 2. This reduces adjustment steps during assembly, improves assembly efficiency, and the multiple vertically connected main beam connectors 2 spaced along the length of the main beam 1 can evenly distribute the weight of the liquid tank and the impact force generated during travel, making the bracket more evenly stressed and further ensuring the safety and stability of the liquid tank.

[0031] In this embodiment, the main beam 1 is provided with multiple mounting slots along its length. The number of mounting slots is the same as the number of main beam connectors 2 and their positions correspond one-to-one. The mounting slots are adapted to the main beam connectors 2.

[0032] This design, with its adaptation between the mounting slot and the main beam connector 2, simplifies the alignment process during welding, reduces manual adjustment time, facilitates rapid fixation, lowers the difficulty of welding construction, and improves the efficiency of parts processing and vehicle assembly. It enables rapid positioning and precise docking of the two, avoiding problems such as large dimensional deviations caused by positional deviations during welding. On the other hand, the adaptation structure between the mounting slot and the main beam connector 2 allows for a larger welding area, preventing damage at the connection point due to uneven stress and extending the service life of the bracket.

[0033] In this embodiment, the main beam connector 2 is set as a U-shaped structural component with the opening of the U-shaped structural component facing the main beam 1, that is, the opening is set downward. This setting allows the sealing end corresponding to the opening end to be set upward, which is convenient for quick alignment with the main beam 1 and also facilitates the setting of the first connecting structure 4.

[0034] With the structural design of the mounting slot, the opening of the U-shaped structural component faces the main beam 1, and its two side walls can be welded and fixed to the main beam 1, increasing the welding contact area with the main beam 1. This allows for a more stable connection of multiple parallel main beams 1 into a whole, improving the overall structural rigidity and deformation resistance of the bracket. It can evenly distribute the weight of the liquid tank and the vibration and impact force during travel to each main beam 1, avoiding damage due to stress concentration at the connection, reducing the risk of structural deformation, extending the service life of the bracket, and ensuring stable support for the liquid tank during fire truck travel and operation.

[0035] like Figure 1 As shown, in some embodiments, the main beam 1 is configured as a Z-shaped structural member, including a connected top plate, side plate, and bottom plate. The reinforcing rib 3 is connected to at least the bottom plate and side plate of the main beam 1. The Z-shaped structural member is made by an integral sheet metal bending process, replacing the traditional multi-plate welding structure, reducing the amount of welding work, and avoiding stress concentration and deformation caused by welding. The bending point of the Z-shaped section has stronger bending and torsional resistance, and can better bear the weight of the PP liquid tank. At least the bottom plate and side plate of the main beam 1 are connected to the reinforcing rib 3 to form a three-dimensional support structure, increasing the connection area, further enhancing the local strength of the opening of the main beam 1 and the whole, and effectively resisting the structural load caused by the vibration and impact when the fire truck is moving.

[0036] Specifically, the base plate mainly bears vertical loads such as the weight of the liquid tank, while the side plates can share lateral forces such as centrifugal force when a vehicle turns. After the reinforcing rib 3 is connected to both, it can evenly distribute the stress in different directions to the main beam 1 as a whole, avoid structural damage caused by local stress concentration, and reduce the vibration and impact caused by stress concentration in the PP liquid tank.

[0037] The base plate facilitates the installation of the second connecting structure 5, which connects to the sub-beam 6 of the frame. The side plate enhances the connection stability with the main beam connector 2. Combined with the strengthening effect of the reinforcing rib 3, the main beam 1, the main beam connector 2, the elastic support and other components form a coordinated force-bearing system. This reduces welding processes while improving the reliability of the bracket's support for the PP liquid tank.

[0038] In this embodiment, the first connecting structure 4 consists of multiple first connecting holes on the main beam 1 and / or the main beam connector 2. The first connecting holes correspond to the mounting holes at the bottom of the liquid tank. The liquid tank and the bracket can be precisely connected by fasteners such as bolts, ensuring a tight and secure connection and preventing displacement of the liquid tank during vehicle operation. The second connecting structure 5 consists of multiple second connecting holes at the bottom of the main beam 1. The second connecting holes correspond to the mounting holes of the sub-beam 6 of the frame, ensuring accurate connection between the bracket and the sub-beam, improving the assembly stability of the overall structure, and adapting to the installation requirements of liquid tanks and sub-beam 6 of different specifications.

[0039] This standardized design of the first and second connecting holes reduces the positioning and adjustment steps during assembly, facilitating the rapid sequential connection of the liquid tank, bracket, and subframe beam 6. Compared to traditional welding or non-standardized connection methods, it significantly shortens assembly time. The detachable structure, such as the bolted connection based on the connecting holes, makes the disassembly and assembly of the liquid tank, bracket, and subframe beam 6 more convenient. During later maintenance, repair, or component replacement, each component can be separated without complicated procedures, reducing maintenance time and costs and ensuring the fire truck's operational efficiency.

[0040] like Figures 1-2As shown, multiple first connecting holes are evenly distributed along the main beam 1 and / or the main beam connector 2, which can evenly transfer the weight and vibration load of the liquid tank to the entire bracket. Multiple second connecting holes are distributed along the bottom of the main beam 1, which can further distribute the load to the sub-beam 6 of the frame, avoiding structural deformation or damage caused by excessive local stress. Combined with the sheet metal bending structure and reinforcing rib 3 design of the main beam 1, stress concentration is effectively reduced, extending the service life of the bracket and related components. The standardized design of the connecting holes can be adapted to the mounting hole positions at the bottom of different models of liquid tanks and the mounting hole positions of the sub-beam 6 of the frame, eliminating the need to design a separate connecting structure for specific specifications, improving the versatility and interchangeability of the bracket, and reducing manufacturing costs.

[0041] Furthermore, such as Figure 1 As shown, the second connecting hole is located at the connection between the main beam 1 and the main beam connector 2, and at the connection between the reinforcing rib 3 and the main beam 1.

[0042] This configuration, by placing the second connection holes in these locations, allows the reinforced structural characteristics to bear the weight transmitted by the liquid tank and the impact force during vehicle operation, avoiding localized strength weakening caused by the opening of the connection holes and improving the reliability of the connection between the bracket and the sub-beam 6 of the frame.

[0043] In this embodiment, the elastic support 7 includes: a housing 8, a support shaft 9, and an elastic element 10, such as... Figures 3-4 As shown, the first end (upper end) of the housing 8 is connected to the sub-beam 6 of the frame, and the support shaft 9 is movably disposed in the housing 8 along the axial direction, with both ends of the support shaft 9 located outside the housing 8. The first end (upper end) of the support shaft 9 is used to connect with the second connecting hole of the main beam 1. The elastic element 10 is sleeved on the support shaft 9, and the first end (upper end) of the elastic element 10 abuts against the second end (lower end) of the housing 8, and the second end (lower end) of the elastic element 10 abuts against the second end (lower end) of the support shaft 9.

[0044] With this configuration, the elastic element 10 is sleeved on the support shaft 9, with its two ends abutting against the second end of the housing 8 and the second end of the support shaft 9, respectively, forming a flexible connection between the main beam 1 and the sub-beam 6 of the frame. When the fire truck accelerates, decelerates, or turns, the support shaft 9 moves axially under the pressure of the liquid tank because the housing 8 is fixed to the sub-beam 6 of the frame. This compresses or stretches the elastic element 10, and the deformation of the elastic element 10 absorbs the vibration and impact energy, effectively buffering the structural impact on the liquid tank and avoiding the problem of liquid tank rupture caused by the inability of traditional brackets to buffer.

[0045] Optionally, the first end of the housing 8 is bolted to the sub-beam 6 of the frame, and the first end of the support shaft 9 is also bolted to the second connection hole. This detachable connection method ensures connection reliability while improving the convenience of later maintenance.

[0046] The elastic support component 7, in conjunction with the integrally formed main beam 1, main beam connector 2, and other structures, reduces the amount of welding work while further optimizing the overall stress of the bracket through flexible connection, enhancing the support stability of the PP liquid tank, and meeting the requirements of fire-fighting operations for equipment safety and reliability.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A bottom bracket for a liquid tank in a fire truck, characterized in that, include: Multiple main beams (1), the multiple main beams (1) are parallel to each other, and the main beams (1) are integrally formed sheet metal bending structures; The main beam connector (2) is provided in multiple ways. The multiple main beam connectors (2) are spaced apart along the length direction of the main beam (1), and the two ends of each main beam connector (2) are fixedly connected to the two outermost main beams (1); A reinforcing rib (3) is provided at the connection between the main beam (1) and the main beam connector (2), and the reinforcing rib (3) is connected to the main beam (1) and the main beam connector (2); The first connecting structure (4) is disposed on the main beam (1) and / or the main beam connector (2) for detachable connection with the bottom of the liquid tank; The second connecting structure (5) is located at the bottom of the main beam (1) and is used for detachable connection with the sub-beam (6) of the frame.

2. The bottom bracket for a liquid tank in a fire truck according to claim 1, characterized in that, Also includes: The main beam (1) is connected to the sub-beam (6) of the frame via the elastic support member (7).

3. The bottom bracket for a liquid tank in a fire truck according to claim 1, characterized in that, The main beam connector (2) is perpendicularly connected to the main beam (1).

4. The bottom bracket for a liquid tank in a fire truck according to claim 1, characterized in that, The main beam (1) has multiple mounting slots along its length. The number of mounting slots is the same as the number of main beam connectors (2) and their positions correspond one-to-one. The mounting slots are adapted to the main beam connectors (2).

5. The bottom bracket for a liquid tank in a fire truck according to claim 1, characterized in that, The first connection structure (4) consists of a plurality of first connection holes provided on the main beam (1) and / or the main beam connector (2), and the first connection holes correspond to the mounting holes at the bottom of the liquid tank.

6. The bottom bracket for a liquid tank in a fire truck according to claim 1, characterized in that, The second connection structure (5) consists of multiple second connection holes located at the bottom of the main beam (1), which correspond to the mounting holes of the sub-beam (6) of the frame.

7. The bottom bracket for a liquid tank in a fire truck according to claim 6, characterized in that, The second connecting hole is provided at the connection between the main beam (1) and the main beam connector (2), and at the connection between the reinforcing rib (3) and the main beam (1).

8. The fire truck liquid tank bottom bracket according to any one of claims 1-7, characterized in that, The elastic support member (7) includes: The housing (8) has its first end connected to the subframe beam (6); A support shaft (9) is movably disposed in the housing (8) along the axial direction, and both ends of the support shaft (9) are located outside the housing (8). The first end of the support shaft (9) is used to connect with the main beam (1). An elastic element (10) is sleeved on the support shaft (9). The first end of the elastic element (10) abuts against the second end of the housing (8), and the second end of the elastic element (10) abuts against the second end of the support shaft (9).

9. The bottom bracket for a liquid tank in a fire truck according to claim 8, characterized in that, The main beam connector (2) is configured as a U-shaped structural component, with the opening of the U-shaped structural component facing the main beam (1).

10. The bottom bracket for a liquid tank in a fire truck according to claim 8, characterized in that, The main beam (1) is configured as a Z-shaped structural member, including a top plate, side plate and bottom plate connected together, and at least the bottom plate and side plate of the main beam (1) are connected to the reinforcing rib (3).

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