Auxiliary frame, chassis and vehicle

Abstract

The utility model discloses an auxiliary frame, a chassis and a vehicle, and relates to the technical field of engineering vehicles. The auxiliary frame comprises two longitudinal beams and a plurality of cross beams connected between the two longitudinal beams. And a fixing hole is formed in the cross beam. The axis direction of the fixing holes is perpendicular to the extending direction of the longitudinal beams. The side, away from the fixing hole, of the longitudinal beam is connected with a supporting base. And a connecting hole is formed in the supporting seat. The chassis is provided with the auxiliary frame. The auxiliary frame is connected with the chassis through a supporting seat. The vehicle comprises a tank body and the chassis. And the auxiliary frame is arranged between the tank body and the chassis. The fixing holes are used for being connected with a tank body. A support does not need to be independently welded to the outer side of the longitudinal beam, the welding amount of the auxiliary frame is reduced, and therefore deformation of the auxiliary frame during welding is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering vehicles, in particular to a subframe, a chassis and a vehicle. Background Art

[0002] The subframe is the main load-bearing component of the fire truck. The whole vehicle is connected to the chassis through the subframe. In special service fire-fighting fire trucks, the subframe not only needs to meet the load-bearing requirements of the whole vehicle and lower the center of gravity of the whole vehicle, but also the side of the subframe needs to be arranged with brackets connected to the superstructure and chassis.

[0003] The inventors have found that the existing sub-frame is connected to the upper body and the lower chassis by separately setting a bracket on the side. The bracket needs to be welded to the side of the sub-frame, and the welding amount is large during processing, which is prone to deformation. Utility Model Content

[0004] The utility model aims to provide a subframe, a chassis and a vehicle, which can reduce the welding amount of the subframe and prevent the subframe from being deformed.

[0005] The embodiment of the utility model is achieved as follows:

[0006] In a first aspect, the utility model provides a subframe, comprising two longitudinal beams and a plurality of cross beams connected between the two longitudinal beams, wherein the cross beams are provided with fixing holes, wherein the axial direction of the fixing holes is perpendicular to the extension direction of the longitudinal beams, and the longitudinal beams are connected with a support seat on a side away from the fixing holes, wherein the support seat is provided with a connecting hole.

[0007] In an optional embodiment, the support seat includes a support plate, which is connected to a side of the longitudinal beam away from the fixing hole, and the connecting hole is opened on the support plate. The connecting hole includes a first connecting hole and a second connecting hole, and the first connecting hole and the second connecting hole are arranged along the extension direction of the longitudinal beam.

[0008] In an optional embodiment, an elastic member is provided between the support plate and the longitudinal beam, and two ends of the elastic member respectively abut against the support plate and the longitudinal beam.

[0009] In an optional embodiment, there are multiple support seats, and the support seats on the same longitudinal beam are arranged at intervals.

[0010] In an optional embodiment, the support seats are arranged at opposite positions on the two longitudinal beams.

[0011] In an optional embodiment, both ends of the cross beam are provided with reinforcing ribs, and both ends of the reinforcing ribs are fixedly connected to the cross beam and the longitudinal beam respectively.

[0012] In an optional embodiment, the longitudinal beam is made of C-shaped steel, and the notch of the C-shaped steel faces a side away from the cross beam.

[0013] In an optional embodiment, the crossbeam is made of U-shaped steel, and the notch of the U-shaped steel faces a side away from the fixing hole.

[0014] In a second aspect, the utility model provides a chassis, on which a sub-frame as described in any one of the aforementioned embodiments is installed, and the sub-frame is connected to the chassis through the support seat.

[0015] In a third aspect, the utility model provides a vehicle, comprising a tank body and a chassis as described in the aforementioned embodiment, wherein the sub-frame is arranged between the tank body and the chassis, and the fixing hole is used to connect the tank body.

[0016] The beneficial effects of the embodiments of the utility model are:

[0017] The subframe of the utility model includes two longitudinal beams and a plurality of transverse beams connected between the two longitudinal beams. The transverse beam is provided with a fixing hole on the side parallel to the extension direction of the longitudinal beam. The longitudinal beam is connected with a support seat on the side away from the fixing hole. The support seat is provided with a connecting hole. The utility model connects the transverse beam between the longitudinal beams, and provides a fixing hole on the transverse beam for connecting with the upper tank body; and connects with the lower chassis through the support seat on the side of the longitudinal beam away from the fixing hole. It is unnecessary to weld a bracket separately on the outer side of the longitudinal beam, thereby reducing the welding amount of the subframe, thereby avoiding deformation of the subframe during welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the structure of a subframe provided in an embodiment of the utility model;

[0020] Figure 2 for Figure 1 Enlarged view of part A in the middle.

[0021] Icons: 100-subframe; 10-longitudinal beam; 11-support seat; 111-support plate; 112-elastic member; 113-connecting hole; 1131-first connecting hole; 1132-second connecting hole; 20-cross beam; 21-fixing hole; 211-first group of fixing holes; 212-second group of fixing holes; 22-reinforcement rib; 23-first spacer; 24-second spacer; 25-third spacer; 200-chassis. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0025] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0026] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 indirectly connected 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.

[0028] First embodiment

[0029] Please refer to Figure 1 The present embodiment provides a subframe 100, which includes two longitudinal beams 10 and a plurality of cross beams 20 connected between the two longitudinal beams 10. A fixing hole 21 is provided on the cross beam 20. The axial direction of the fixing hole 21 is perpendicular to the extension direction of the longitudinal beam 10. The longitudinal beam 10 is connected to a support seat 11 on the side away from the fixing hole 21. The support seat 11 is provided with a connecting hole 113.

[0030] In this embodiment, the two longitudinal beams 10 are arranged in parallel and at intervals. The two ends of the crossbeam 20 are fixedly connected to the two longitudinal beams 10 by bolts respectively. The extension direction of the crossbeam 20 is perpendicular to the extension direction of the longitudinal beam 10. The length of the crossbeam 20 is equal to the distance between the two longitudinal beams 10. It can be understood that the distance between the two longitudinal beams 10 refers to the distance between the two opposite sides of the two longitudinal beams 10. In other words, it is only necessary to ensure that the two opposite sides of the two longitudinal beams 10 are parallel. The two side surfaces of the two longitudinal beams 10 facing outwards can be set to be parallel or non-parallel, and the utility model does not make any limitation.

[0031] In this embodiment, the number of cross beams 20 is four, and they are arranged in parallel and spaced apart in the extending direction of the longitudinal beam 10. In other embodiments, the number of cross beams 20 can be set to two, three, etc., which is not limited by the present invention. Specifically, a first interval 23, a second interval 24, and a third interval 25 are formed in sequence between the four cross beams 20. In this embodiment, the length of the first interval 23 and the length of the third interval 25 are both less than the length of the second interval 24. In other embodiments, the first interval 23, the second interval 24, and the third interval 25 can be set to the same length, which is not limited by the present invention.

[0032] In order to adjust the position of the cross beam 20, in this embodiment, the cross beam 20 and the longitudinal beam 10 are detachably connected. Specifically, the longitudinal beam 10 is provided with mounting holes (not shown) arranged at intervals along the extending direction of the longitudinal beam 10. The two ends of the cross beam 20 are fixed between the two longitudinal beams 10 through the mounting holes.

[0033] Further, there are a plurality of fixing holes 21 on the cross beam 20. The plurality of fixing holes 21 are arranged at intervals along the extension direction of the cross beam 20. It can be understood that the axial direction of the fixing hole 21 is perpendicular to the extension direction of the longitudinal beam 10.

[0034] Specifically, the fixing holes 21 include a first group of fixing holes 211 and a second group of fixing holes 212. The first group of fixing holes 211 and the second group of fixing holes 212 are respectively arranged on the cross beam 20 at both ends close to the two longitudinal beams 10. In this embodiment, the number of holes in the first group of fixing holes 211 and the second group of fixing holes 212 are both three. In other embodiments, the number of holes in the first group of fixing holes 211 and the second group of fixing holes 212 may be two, four, etc., and the number of holes in the first group of fixing holes 211 may also be different from the number of holes in the second group of fixing holes 212, which is not limited in the present invention.

[0035] Please refer to Figure 2 In this embodiment, the support seat 11 includes a support plate 111. The support plate 111 is connected to a side of the longitudinal beam 10 away from the fixing hole 21. A connecting hole 113 is provided on the support plate 111. The connecting hole 113 includes a first connecting hole 1131 and a second connecting hole 1132. The first connecting hole 1131 and the second connecting hole 1132 are arranged along the extension direction of the longitudinal beam 10. It can be understood that the fixing hole 21 and the connecting hole 113 are located on both sides of the sub-frame 100, and are respectively used to connect the structures on both sides of the sub-frame 100.

[0036] In order to mitigate the impact of the connection structure, in this embodiment, an elastic member 112 is provided between the support plate 111 and the longitudinal beam 10. The two ends of the elastic member 112 respectively abut against the support plate 111 and the longitudinal beam 10. In this embodiment, the elastic member 112 is a spring, and the two ends of the spring respectively abut against the support plate 111 and the longitudinal beam 10.

[0037] Specifically, the number of the support seats 11 is multiple. The support seats 11 on the same longitudinal beam 10 are arranged at intervals. In this embodiment, there are six support seats 11, and three support seats 11 are arranged on each longitudinal beam 10. The spacing between the support seats 11 is equal. In other embodiments, the number of the support seats 11 can be two, four, eight, etc., and the spacing between the support seats 11 can also be set according to specific needs, which is not limited by the present invention.

[0038] It is understood that in this embodiment, the support plate 111 fixes the longitudinal beam 10 to the lower chassis 200 by bolts. An elastic member 112 is arranged between the support plate 111 and the longitudinal beam 10 to alleviate the impact between the chassis 200 and the tank body connected at both ends of the subframe 100.

[0039] Furthermore, the positions of the support seats 11 on the two longitudinal beams 10 are relatively arranged. It can be understood that in this embodiment, the longitudinal beam 10 is pre-set with a hole position, and then the longitudinal beam 10 and the support seat 11 are fixed by bolts. The positions of the support seats 11 on the two longitudinal beams 10 are relatively arranged, thereby ensuring that the position of the support seats 11 on the longitudinal beam 10 is fixed, so that the hole position on the longitudinal beam 10 is fixed, which is convenient for batch processing of the longitudinal beam 10.

[0040] In this embodiment, both ends of the cross beam 20 are provided with reinforcing ribs 22. The two ends of the reinforcing ribs 22 are fixedly connected to the cross beam 20 and the longitudinal beam 10, respectively. It can be understood that the reinforcing ribs 22 are used to strengthen the strength of the longitudinal beam 10 and the cross beam 20. The reinforcing ribs 22 are set in an "L" shape, and the two ends are respectively attached to the longitudinal beam 10 and the cross beam 20. In other embodiments, the reinforcing ribs 22 can be set in a straight line shape, and the two ends are respectively connected to the longitudinal beam 10 and the cross beam 20, as long as the connection between the longitudinal beam 10 and the cross beam 20 can be strengthened, the utility model is not limited.

[0041] Furthermore, in this embodiment, two ends of the reinforcing rib 22 are connected to the longitudinal beam 10 and the cross beam 20 respectively by bolts.

[0042] Specifically, in this embodiment, the longitudinal beam 10 is made of C-shaped steel. The notch of the C-shaped steel faces the side away from the cross beam 20. It can be understood that, when the C-shaped steel is used, one end of the notch of the longitudinal beam 10 faces the outside of the subframe 100, and the sealed end of the longitudinal beam 10 is used to connect to the cross beam 20. The notch is provided on the outside of the longitudinal beam 10 to facilitate the opening of a hole at the sealed end and to facilitate the installation of screws.

[0043] Further, in this embodiment, the cross beam 20 is made of U-shaped steel. The notch of the U-shaped steel faces the side away from the fixing hole 21. It can be understood that, when the U-shaped steel is used, one end of the notch of the cross beam 20 faces the bottom of the sub-frame 100, and the top of the sub-frame 100 is used to connect the tank body.

[0044] The beneficial effects of the subframe 100 provided in the first embodiment of the utility model are:

[0045] The subframe 100 of the utility model includes two longitudinal beams 10 and a plurality of cross beams 20 connected between the two longitudinal beams 10. The cross beam 20 is provided with a fixing hole 21 on the side parallel to the extension direction of the longitudinal beam 10. The longitudinal beam 10 is connected with a support seat 11 on the side away from the fixing hole 21. The support seat 11 is provided with a connecting hole 113. The utility model connects the cross beam 20 between the longitudinal beams 10, and provides the fixing hole 21 on the cross beam 20 for connecting with the upper tank body; and connects with the lower chassis 200 by the support seat 11 on the side of the longitudinal beam 10 away from the fixing hole 21, so that there is no need to weld a bracket separately on the outer side of the longitudinal beam 10, thereby reducing the welding amount of the subframe 100, thereby avoiding deformation of the subframe 100 during welding.

[0046] Second embodiment

[0047] This embodiment provides a chassis 200. The sub-frame 100 of the first embodiment is installed on the chassis 200. The sub-frame 100 is connected to the chassis 200 via a support seat 11.

[0048] The chassis 200 provided in this embodiment includes the subframe 100 of the first embodiment, and has the same working principle and beneficial effects as those of the first embodiment.

[0049] Third embodiment

[0050] This embodiment provides a vehicle, comprising a tank body and the chassis 200 of the second embodiment. The subframe 100 is arranged between the tank body and the chassis 200. The fixing hole 21 is used to connect the tank body.

[0051] The chassis 200 provided in this embodiment includes the chassis 200 of the second embodiment, which has the same working principle and beneficial effects as those of the second embodiment.

[0052] In summary, the present embodiment provides a subframe 100 , a chassis 200 and a vehicle, which can reduce the welding amount of the subframe 100 and prevent the subframe 100 from being deformed.

[0053] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A subframe, characterized in that: It includes two longitudinal beams and a plurality of transverse beams connected between the two longitudinal beams. The transverse beams are provided with fixing holes. The axial direction of the fixing holes is perpendicular to the extension direction of the longitudinal beams. The longitudinal beams are connected with support seats on the side away from the fixing holes. The support seats are provided with connecting holes.

2. The subframe according to claim 1, characterized in that: The support seat includes a support plate, which is connected to a side of the longitudinal beam away from the fixing hole. The support plate is provided with the connecting hole, which includes a first connecting hole and a second connecting hole, and the first connecting hole and the second connecting hole are arranged along the extension direction of the longitudinal beam.

3. The subframe according to claim 2, characterized in that: An elastic member is arranged between the support plate and the longitudinal beam, and two ends of the elastic member respectively abut against the support plate and the longitudinal beam.

4. The subframe according to claim 1, characterized in that: There are multiple support seats, and the support seats on the same longitudinal beam are arranged at intervals.

5. The subframe according to claim 4, characterized in that: The support seats are arranged opposite to each other on the two longitudinal beams.

6. The subframe according to claim 1, characterized in that: Both ends of the cross beam are provided with reinforcing ribs, and both ends of the reinforcing ribs are fixedly connected to the cross beam and the longitudinal beam respectively.

7. The subframe according to any one of claims 1 to 6, characterized in that: The longitudinal beam is made of C-shaped steel, and the notch of the C-shaped steel faces the side away from the cross beam.

8. The subframe according to any one of claims 1 to 6, characterized in that: The crossbeam is made of U-shaped steel, and the notch of the U-shaped steel faces a side away from the fixing hole.

9. A chassis, characterized in that: The chassis is mounted with a sub-frame as described in any one of claims 1 to 8, and the sub-frame is connected to the chassis via the support seat.

10. A vehicle, characterized in that: It comprises a tank body and the chassis as claimed in claim 9, wherein the sub-frame is arranged between the tank body and the chassis, and the fixing hole is used to connect the tank body.

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