Supporting leg structure, auxiliary beam and fire fighting truck

Abstract

The utility model provides a supporting leg structure, an auxiliary beam and a fire fighting truck, and relates to the technical field of fire fighting trucks. The supporting leg structure comprises two side plates, an upper cover plate and a lower cover plate, and at least one of the side plates, the upper cover plate and the lower cover plate is provided with a lightening hole. Wherein the upper cover plate and the lower cover plate are both arranged between the two side plates, and the upper cover plate, the lower cover plate and the two side plates jointly define a box body; and the first direction is perpendicular to the second direction. It can be understood that the lightening holes are formed in at least one of the side plates, the upper cover plate and the lower cover plate, materials are reduced, the overall weight is reduced, and the lightweight design is achieved. Therefore, when the supporting leg structure provided by the utility model is applied to the fire fighting truck, the supporting leg structure is relatively light in structural mass, and the problem of overweight can be avoided, so that the fire fighting truck can carry more equipment and fire extinguishing agents.

Description

Technical Field

[0001] The utility model relates to the technical field of fire trucks, and in particular to a leg structure, a secondary beam and a fire truck. Background Art

[0002] At present, most multifunctional main station fire trucks are provided with outrigger structures to provide support for the fire trucks, enhance stability, and prevent the fire trucks from tilting or falling when docked or performing rescue missions.

[0003] However, the existing outrigger structure is simple in design, thick in thickness, and heavy in weight. When it is configured on a fire truck together with other structural parts, it is easy to cause the entire vehicle to be overweight, affecting the amount of fire extinguishing agent carried. Utility Model Content

[0004] The utility model aims to provide a leg structure, a sub-beam and a fire truck, which can reduce materials, lower the overall weight and achieve lightweight design.

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

[0006] In a first aspect, the utility model provides a leg structure, comprising:

[0007] Two side panels, an upper cover plate and a lower cover plate, and at least one of the side panels, the upper cover plate and the lower cover plate is provided with a weight-reducing hole;

[0008] The two side plates are relatively arranged on both sides in the first direction, and both ends of the side plates are inclined downward; the upper cover plate and the lower cover plate are relatively arranged on both sides in the second direction, and the upper cover plate and the lower cover plate are both arranged between the two side plates, and together with the two side plates, form a box body;

[0009] And the first direction and the second direction are perpendicular to each other.

[0010] In an optional embodiment, the side panels are symmetrically arranged, and the width of the inclined portion of the side panels gradually increases along a direction approaching the center of the side panels.

[0011] In an optional embodiment, the leg structure further includes a plurality of first reinforcing plates spaced apart along the third direction, and the first reinforcing plates are disposed in the box body, and the first direction, the second direction and the third direction are perpendicular to each other.

[0012] In an optional embodiment, the leg structure further includes a plurality of second reinforcing plates, which are arranged at the inclined portions of the side plates and are spaced apart along the inclined direction.

[0013] In an optional embodiment, the first reinforcing plate and the second reinforcing plate are both vertically connected to the upper cover plate on one side and vertically connected to the lower cover plate on the other opposite side.

[0014] In an optional embodiment, both ends of the upper cover plate are provided with a first positioning hole, both ends of the lower cover plate are provided with a second positioning hole, and the first positioning hole and the second positioning hole located at the same end are coaxially arranged;

[0015] The outrigger structure also includes two mounting tubes for connecting with the outrigger oil cylinders, and two ends of the mounting tubes are respectively matched with the first positioning hole and the second positioning hole.

[0016] In an optional embodiment, the mounting cylinder includes a cylinder body and a positioning portion extending outward along the circumference of the cylinder body, the positioning portion is located at one end of the cylinder body, and the outer diameter of the positioning portion is larger than the diameter of the first positioning hole, and the first positioning hole and the second positioning hole are sequentially arranged at the end of the cylinder body away from the positioning portion.

[0017] In an optional embodiment, the inner wall of the cylinder is further provided with a keyway for preventing the outrigger cylinder from rotating.

[0018] In a second aspect, the utility model provides a sub-beam, comprising a beam body and a leg structure of any one of the aforementioned implementation modes, wherein the leg structure is connected to the beam body.

[0019] In a third aspect, the utility model provides a fire truck, comprising a vehicle body and the sub-beam of the aforementioned embodiment, wherein the vehicle body is connected to the sub-beam.

[0020] The beneficial effects of the embodiments of the utility model include:

[0021] The present application provides a leg structure, a sub-beam and a fire truck, wherein the leg structure includes two side panels, an upper cover plate and a lower cover plate, and at least one of the side panels, the upper cover plate and the lower cover plate is provided with a weight-reducing hole. The upper cover plate and the lower cover plate are both arranged between the two side panels, and together with the two side panels, form a box body; and the first direction and the second direction are perpendicular to each other. It can be understood that based on the arrangement that at least one of the side panels, the upper cover plate and the lower cover plate is provided with a weight-reducing hole, the material is reduced, the overall weight is reduced, and a lightweight design is achieved. Therefore, when the leg structure provided by the present application is applied to a fire truck, its structural mass is relatively light, which can avoid the problem of overweight, so that the fire truck can carry more equipment and fire extinguishing agents. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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.

[0023] Figure 1A schematic diagram of the support leg structure provided by an embodiment of the utility model;

[0024] Figure 2 A partial schematic diagram of the leg structure provided by an embodiment of the utility model;

[0025] Figure 3 This is a schematic diagram of the installation tube provided in an embodiment of the utility model.

[0026] Icons: 10-leg structure; 100-side plate; 200-upper cover; 210-first positioning hole; 300-lower cover; 310-second positioning hole; 400-sealing plate; 510-first reinforcement plate; 530-second reinforcement plate; 600-installation cylinder; 610-cylinder body; 611-keyway; 630-positioning part; 710-weight reduction hole; 730-first through hole; 750-second through hole; 770-third through hole; 910-first direction; 930-second direction; 950-third direction. DETAILED DESCRIPTION

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] As mentioned in the background technology, the existing outrigger structure is simple in design, thick in thickness, and heavy in weight. When configured on a fire truck together with other structures, it is easy to cause the entire vehicle to be overweight, thereby affecting the amount of fire extinguishing agent carried. In order to improve the above problem, the present application designs an outrigger structure that can effectively reduce the weight of the structure without reducing the strength and rigidity of the structure, solve the overweight problem caused when configured on a fire truck, so that the vehicle can carry more equipment and fire extinguishing agent.

[0034] See also Figure 1 , Figure 1 Schematic diagram of a leg structure 10 provided in an embodiment of the utility model. The present application provides a leg structure 10, which includes two side panels 100, an upper cover plate 200 and a lower cover plate 300, and at least one of the side panels 100, the upper cover plate 200 and the lower cover plate 300 is provided with a weight reduction hole 710.

[0035] Among them, the two side panels 100 are relatively arranged on both sides in the first direction 910, and the two ends of the side panels 100 are inclined downward; the upper cover plate 200 and the lower cover plate 300 are relatively arranged on both sides in the second direction 930, and the upper cover plate 200 and the lower cover plate 300 are both arranged between the two side panels 100, and together with the two side panels 100, they form a box body; and the first direction 910 and the second direction 930 are perpendicular to each other.

[0036] It is understandable that, based on the setting that at least one of the side plate 100, the upper cover plate 200 and the lower cover plate 300 is provided with a weight-reducing hole 710, the material is reduced, the overall weight is reduced, and a lightweight design is achieved. Therefore, when the leg structure 10 provided in the present application is applied to a fire truck, its structural mass is relatively light, which can avoid the problem of overweight, so that the fire truck can carry more equipment and fire extinguishing agents. In particular, when applied to a small-tonnage chassis fire truck, it can carry more equipment and fire extinguishing agents on the same tonnage chassis.

[0037] Furthermore, the setting of the weight-reducing hole 710 can also make full use of the space of the outrigger structure 10, and facilitate the configuration of other structures of the fire truck. Accordingly, when the weight-reducing hole 710 is opened on the side plate 100, it can facilitate the passage of the outrigger oil cylinder oil pipe and related sensor cables, or pass through the transmission shaft to facilitate connection with the fire pump installed on the sub-beam. In addition, it should be noted that the above-mentioned relative setting at this time refers to the opposite setting, so as to ensure that the two side plates 100 are symmetrically provided with the weight-reducing holes 710.

[0038] On the basis of the above, due to the downward tilting of the two ends of the side plate 100, a clamping space matched with the chassis is formed, thereby improving the stability of the connection with the chassis. Therefore, for chassis of different heights, the universal use of the leg oil cylinder can be ensured by adjusting the downward tilting angle of the two sides of the side plate 100, avoiding the need to add other adjustment components to adjust the height of the leg structure 10, which leads to an increase in the weight of the leg structure 10.

[0039] See also Figure 2 , Figure 2 The figure is a partial schematic diagram of the outrigger structure 10 provided by the embodiment of the utility model. The upper cover plate 200 is provided with a first positioning hole 210 at both ends, and the lower cover plate 300 is provided with a second positioning hole 310 at both ends, and the first positioning hole 210 and the second positioning hole 310 at the same end are coaxially arranged; the outrigger structure 10 also includes two mounting tubes 600 for connecting with the outrigger oil cylinder, and the two ends of the mounting tube 600 are matched with the first positioning hole 210 and the second positioning hole 310 respectively.

[0040] Based on the above configuration, the coaxially arranged first positioning hole 210 and the second positioning hole 310 form a constrained positioning space in the second direction 930, so as to guide and constrain the mounting cylinder 600 matched therewith, thereby ensuring both the stability of the connection and the normal use of the outrigger oil cylinder. Optionally, the first positioning hole 210 and the second positioning hole 310 are arranged with the same diameter, and the mounting cylinder 600 is embedded in the first positioning hole 210 and the second positioning hole 310, and welded to the hole walls of the two.

[0041] In addition, it should be noted that the mounting tube 600 is a precision-machined part, and the leg oil cylinder can be installed without post-welding processing after the leg structure 10 is welded as a whole. In addition, the outer diameter of the leg oil cylinder and the inner diameter of the mounting tube 600 are clearance-matched to ensure good force bearing of the leg oil cylinder and the leg structure 10.

[0042] Next, the installation cylinder 600 will be described in detail. Figure 3 , Figure 3 Schematic diagram of the installation cylinder 600 provided in the embodiment of the utility model. The installation cylinder 600 includes a cylinder body 610 and a positioning portion 630 extending outwardly along the circumference of the cylinder body 610, the positioning portion 630 is located at one end of the cylinder body 610, and the outer diameter of the positioning portion 630 is greater than the diameter of the first positioning hole 210, and the first positioning hole 210 and the second positioning hole 310 are sequentially penetrated at one end of the cylinder body 610 away from the positioning portion 630.

[0043] That is to say, the mounting cylinder 600 is a stepped hollow shaft-shaped workpiece, the diameter of its cylinder body 610 is smaller than the diameters of the first mounting hole and the second mounting hole, and the outer diameter of its positioning portion 630 is larger than the diameters of the first mounting hole and the second mounting hole, thereby playing the role of welding and positioning with the upper cover plate 200.

[0044] Furthermore, based on the above configuration, the positioning portion 630 and the cylinder body 610 can be respectively provided with a first mounting hole and a second mounting hole, so that the contact area with the mounting surface of the outrigger oil cylinder is increased and the pressure is reduced. Optionally, the cylinder body 610 is provided with a first through hole 730 in the radial direction to achieve the technical effect of reducing the weight of the mounting cylinder 600.

[0045] Furthermore, a keyway 611 for preventing the outrigger oil cylinder from rotating is also provided on the inner wall of the cylinder 610. Specifically, the keyway 611 cooperates with the flange of the outrigger oil cylinder to strengthen the positioning relationship between the outrigger oil cylinder and the cylinder 610, thereby achieving the technical effect of preventing the outrigger oil cylinder from rotating relative to the cylinder 610, and ensuring the safety of the outrigger structure 10 when used in conjunction with the outrigger oil cylinder.

[0046] Please refer again Figure 2In order to improve the stress condition of the leg structure 10, the leg structure 10 also includes a plurality of first reinforcing plates 510 arranged at intervals along the third direction 950, and the first reinforcing plates 510 are arranged in the box body, and the first direction 910, the second direction 930 and the third direction 950 are perpendicular to each other.

[0047] It is understandable that, since the first reinforcing plate 510 is disposed in the box, it can provide a certain supporting capacity for the box, thereby improving the stress condition of the leg structure 10 , reducing cracking failures of the leg structure 10 , and extending the service life of the leg structure 10 .

[0048] like Figure 2 As shown, in order to strengthen the load condition of the leg structure 10, the leg structure 10 further includes a plurality of second reinforcing plates 530, which are arranged at the inclined portion of the side plate 100 and spaced apart along the inclined direction. Based on the above arrangement, the rigidity and strength of the side plate 100 at both the inclined portion and the non-inclined portion are improved, thereby reducing the damage of the leg structure 10 due to insufficient load capacity.

[0049] Furthermore, one side of the first reinforcing plate 510 and the second reinforcing plate 530 are vertically connected to the upper cover plate 200, and the other side is vertically connected to the lower cover plate 300. Therefore, it can be seen that the first reinforcing plate 510 and the second reinforcing plate 530 are both formed on the common vertical surface of the upper cover plate 200 and the lower cover plate 300 to form reinforcing ribs, which can increase the strength of the connection surface, thereby further improving the force condition of the legs and extending the service life of the legs.

[0050] Furthermore, the first reinforcing plate 510 and the second reinforcing plate 530 can also be simultaneously located on the common vertical plane of the two side panels 100, that is, the opposite sides are respectively vertically connected to the two side panels 100, so as to transfer the force to the side panels 100, further improving the overall force condition of the leg structure 10.

[0051] In addition, the first reinforcing plate 510 and the second reinforcing plate 530 are respectively provided with a second through hole 750 and a third through hole 770 to achieve a lightweight effect. It should be noted that the second through hole 750 and the third through hole 770 can be arranged in a rectangular shape to achieve the purpose of weight reduction while strengthening the structure. In addition, it should be noted that the weight reduction holes 710 are correspondingly arranged at intervals along the third direction 950. In addition, the leg structure 10 also includes two sealing plates 400 arranged relatively along the third direction 950, and the two sealing plates 400 are respectively connected to the openings at both ends of the box body, so that the box body is a closed box body structure.

[0052] Please refer again Figure 1, the side panels 100 are symmetrically arranged, and the width of the inclined part of the side panels 100 gradually increases along the direction close to the center of the side panels 100. Based on the above arrangement, it can be understood that the two side panels 100 are both in a shape of being high in the middle and gradually shrinking on both sides. Therefore, the closed rectangle projected in the middle of the box body in the third direction 950 is the largest, and then the closed rectangles projected in the third direction 950 on both sides gradually shrink, so that the box body forms an equal strength beam.

[0053] In summary, the present application provides a leg structure 10, which includes two side panels 100, an upper cover plate 200 and a lower cover plate 300, and at least one of the side panels 100, the upper cover plate 200 and the lower cover plate 300 is provided with a weight reduction hole 710. Among them, the upper cover plate 200 and the lower cover plate 300 are both arranged between the two side panels 100, and together with the two side panels 100, they are enclosed to form a box; and the first direction 910 and the second direction 930 are perpendicular to each other. It can be understood that based on the setting that at least one of the side panels 100, the upper cover plate 200 and the lower cover plate 300 is provided with a weight reduction hole 710, the material is reduced, the overall weight is reduced, and a lightweight design is achieved. Therefore, when the leg structure 10 provided in the present application is applied to a fire truck, its structural mass is relatively light, which can avoid the problem of overweight, so that the fire truck can carry more equipment and fire extinguishing agents.

[0054] In addition, the present application also provides a sub-beam, which includes a beam body and the leg structure 10 in the above embodiment, and the leg structure 10 is connected to the beam body. Therefore, it can also reduce materials, reduce overall weight, and achieve lightweight design.

[0055] In addition, the present application also provides a fire truck, which includes a vehicle body and the sub-beam in the above embodiment, and the vehicle body is connected to the sub-beam. Therefore, it can also reduce materials, reduce the overall weight, and achieve lightweight design.

[0056] 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 leg structure, characterized in that: include: Two side plates (100), an upper cover plate (200) and a lower cover plate (300), and at least one of the side plates (100), the upper cover plate (200) and the lower cover plate (300) is provided with a weight-reducing hole (710); The two side panels (100) are relatively arranged on two sides in a first direction (910), and two ends of the side panels (100) are inclined downward; the upper cover plate (200) and the lower cover plate (300) are relatively arranged on two sides in a second direction (930), and the upper cover plate (200) and the lower cover plate (300) are both arranged between the two side panels (100) and are enclosed together with the two side panels (100) to form a box body; And the first direction (910) and the second direction (930) are perpendicular to each other.

2. The leg structure according to claim 1, characterized in that: The side panels (100) are symmetrically arranged, and the width of the inclined portion of the side panels (100) gradually increases in a direction approaching the center of the side panels (100).

3. The leg structure according to claim 1, characterized in that: The leg structure (10) further comprises a plurality of first reinforcing plates (510) arranged at intervals along a third direction (950), and the first reinforcing plates (510) are arranged in the box body, and the first direction (910), the second direction (930) and the third direction (950) are perpendicular to each other.

4. The leg structure according to claim 3, characterized in that: The leg structure (10) further comprises a plurality of second reinforcing plates (530), wherein the plurality of second reinforcing plates (530) are arranged at the inclined portion of the side plate (100) and are arranged at intervals along the inclined direction.

5. The leg structure according to claim 4, characterized in that: The first reinforcing plate (510) and the second reinforcing plate (530) are both vertically connected to the upper cover plate (200) on one side and vertically connected to the lower cover plate (300) on the other side opposite thereto.

6. The leg structure according to claim 1, characterized in that: Both ends of the upper cover plate (200) are provided with a first positioning hole (210), and both ends of the lower cover plate (300) are provided with a second positioning hole (310), and the first positioning hole (210) and the second positioning hole (310) located at the same end are coaxially arranged; The outrigger structure (10) further comprises two mounting tubes (600) for connecting to the outrigger oil cylinders, and two ends of the mounting tubes (600) respectively cooperate with the first positioning hole (210) and the second positioning hole (310).

7. The leg structure according to claim 6, characterized in that: The mounting cylinder (600) comprises a cylinder body (610) and a positioning portion (630) extending outwardly along the circumference of the cylinder body (610), wherein the positioning portion (630) is located at one end of the cylinder body (610), and an outer diameter of the positioning portion (630) is greater than a diameter of the first positioning hole (210), and the first positioning hole (210) and the second positioning hole (310) are sequentially formed at one end of the cylinder body (610) away from the positioning portion (630).

8. The leg structure according to claim 7, characterized in that: The inner wall of the cylinder (610) is also provided with a keyway (611) for preventing the outrigger oil cylinder from rotating.

9. A secondary beam, characterized in that: It comprises a beam body and a leg structure (10) according to any one of claims 1 to 8, and the leg structure (10) is connected to the beam body.

10. A fire truck, characterized in that: The vehicle comprises a vehicle body and the sub-beam according to claim 9, wherein the vehicle body is connected to the sub-beam.

Images