Front axle, front axle assembly and engineering vehicle

Abstract

The application provides a front axle, a front axle assembly and an engineering vehicle, and relates to the technical field of engineering vehicles. The front axle comprises a front axle body and a mounting lug plate. The front axle body comprises an upper wing plate and a lower wing plate arranged in position along the thickness direction of the front axle body, and a side plate is arranged between the upper wing plate and the lower wing plate. The lower wing plate extends along one side of the width direction of the front axle body and has an ear plate part. The mounting lug plate is arranged on the side plate and corresponds to the ear plate part. An installation space for installing a steering driving mechanism is formed between the mounting lug plate and the ear plate part. The application utilizes the ear plate part extending upwards from the lower wing plate and the mounting lug plate to jointly form the installation space for installing the steering driving mechanism, thereby reducing the occupation of the space of the side plate, effectively reducing the height of the side plate, and thus reducing the thickness of the entire front axle body. In the engineering vehicle, the ground clearance of the vehicle chassis can be effectively increased, the passing capacity can be improved, and the complex and poor road conditions can be adapted to.

Description

Technical Field

[0001] This application belongs to the field of engineering vehicle technology, specifically relating to a front axle, front axle assembly, and engineering vehicle. Background Technology

[0002] The axle is one of the core components of a wheeled vehicle. Connected to the chassis via the suspension, it houses the wheels at both ends and bears the vehicle's load, ensuring normal movement on roads. Mining dump trucks operate under harsh conditions, with a high proportion of heavy-load uphill and downhill operations on steep slopes, often accompanied by high-frequency alternating impact loads. This places high demands on the axle's load-bearing capacity and welding quality. Furthermore, mining areas typically have poor road conditions, infrequent maintenance, and uneven surfaces containing large stones, further emphasizing the dump truck's excellent passability. As the core of the vehicle chassis, the axle's ground clearance largely determines the vehicle's off-road capability.

[0003] Currently, wheels are mounted at both ends of the front steering axle, with the steering cylinder installed in the middle. Cylinder mounts need to be welded to the side plates. Because the cylinder mounts themselves have specific dimensions, a significant margin needs to be allowed in the height of the side plates to meet welding requirements, resulting in an increase in the vertical structural thickness of the front steering axle. This reduces the vehicle's ground clearance, limiting its ability to pass through complex conditions and making it difficult to adapt to challenging road conditions. Utility Model Content

[0004] The purpose of this application is to provide a front axle, front axle assembly, and engineering vehicle to solve the problem that the existing steering front axle has an increased overall thickness due to the installation requirements of the cylinder seat, which limits the ground clearance of the vehicle chassis, resulting in poor passability and difficulty in adapting to complex and harsh road conditions.

[0005] To achieve the above objectives, the first aspect of this application provides a front axle, including a front axle body and a mounting lug; The front axle body includes an upper wing plate and a lower wing plate arranged in alignment along its own thickness direction, and a side plate is provided between the upper wing plate and the lower wing plate; The lower wing plate extends along one side of the front axle body in the width direction and has a lug portion. The mounting lug is disposed on the side plate and corresponds to the lug portion. An installation space for mounting the steering drive mechanism is formed between the mounting lug and the lug portion.

[0006] As a further improvement to the above technical solution: In some embodiments, the ear plate portion and the lower wing plate are integrally constructed.

[0007] In some embodiments, the lug portion has a smooth transition portion between its two sides and the lower wing plate along the length direction of the front axle body.

[0008] In some embodiments, the smooth transition portion is an arc transition.

[0009] In some embodiments, the outer contour of the mounting lug coincides with the outer contour of the lug portion in the projection of the front axle body in the thickness direction. And / or, the thickness of the mounting ear plate is the same as the thickness of the ear plate portion.

[0010] In some embodiments, the mounting ear plate is welded to the side plate.

[0011] In some embodiments, the mounting ear plate has two welding feet on the side near the side plate, the welding feet are welded to the side plate, and an avoidance gap is formed between the two welding feet.

[0012] In some embodiments, the lower flange has bends at both ends, and the bending angle of the bends is 138° to 145°.

[0013] To achieve the above objectives, a second aspect of this application provides a front axle assembly including the front axle provided in the first aspect.

[0014] To achieve the above objectives, a third aspect of this application provides an engineering vehicle including a front axle assembly provided according to the second aspect above.

[0015] Compared with the prior art, the front axle, front axle assembly, and engineering vehicle provided in this application have at least the following technical advantages: The front axle provided in this application features a lug portion extending along one side of the lower flange of the front axle body in the width direction. A mounting lug is provided at the corresponding position on the side plate, thereby creating a mounting space for the steering drive mechanism between the mounting lug and the lug portion. Compared to existing technologies that directly mount the cylinder block on the side plate, this application utilizes the lug portion extending from the lower flange and the mounting plate to jointly form the mounting space for the steering drive mechanism, thus reducing the space occupied by the side plate and effectively reducing the height of the side plate, thereby reducing the overall thickness of the front axle body. When applied to engineering vehicles, this effectively increases the ground clearance of the vehicle chassis, improving its passability and adapting to complex and harsh road conditions.

[0016] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings: Figure 1 This is a partial structural diagram of a front axle assembly in the prior art; Figure 2 A partial structural schematic diagram of a front axle assembly provided in an embodiment of this application; Figure 3 for Figure 2 The front view of the front axle assembly shown; Figure 4 for Figure 2 A partial structural diagram of the mounting ear seat on the middle plate and the ear seat portion on the lower wing plate.

[0018] Figure 1 Explanation of reference numerals in the attached figures 10-Cylinder seat; Figures 2-4 Explanation of reference numerals in the attached figures 100. Front axle; 110. Front axle body; 111. Upper wing plate; 1110. Lug plate; 1111. Smooth transition section; 112. Lower wing plate; 1120. Bending section; 113. Side plate; 120. Mounting lug plate; 121. Mounting space; 122. Hinge pin hole; 123. Welded foot; 124. Clearance notch; 200. Steering tire; 300. Wheel-side components; 400. Steering pin; 500. Suspension cylinder seat; 600. Parallel link seat; 700. Wheel rim; 800. Steering tie rod. Detailed Implementation

[0019] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0020] The present application will now be described in detail with reference to the accompanying drawings and exemplary embodiments.

[0021] Example Please see Figure 2 , Figure 3 and Figure 4 This embodiment provides a front axle 100 that can be used in engineering vehicles.

[0022] The front axle 100 provided in this embodiment includes a front axle body 110 and a mounting lug 120. The front axle body 110 includes an upper wing 111 and a lower wing 112 arranged aligned along its own thickness direction, with a side plate 113 provided between the upper wing 111 and the lower wing 112. Figure 1 As shown in the figure, arrow H indicates the vertical or thickness direction of the front axle body 110, arrow L indicates the length direction of the front axle body 110, and arrow W indicates the width direction of the front axle body 110.

[0023] In this embodiment, two side plates 113 are provided along the width direction of the front axle body 110, that is, two side plates 113 are provided at intervals between the upper wing plate 111 and the lower wing plate 112. The upper wing plate 111, the lower wing plate 112, and the two side plates 113 surround each other to form a hollow structure of the front axle body 110. The upper wing plate 111, the lower wing plate 112, and the two side plates 113 are welded together.

[0024] Furthermore, the lower wing plate 112 extends a lug portion 1110 along one side of the width direction of the front axle body 110, and a mounting lug 120 is disposed on the side plate 113 and corresponds to the lug portion 1110. A mounting space 121 for mounting the steering drive mechanism is formed between the mounting lug 120 and the lug portion 1110.

[0025] Optionally, the steering drive mechanism may be a hydraulic steering cylinder or an electric steering cylinder.

[0026] It should be noted that, as Figure 1 As shown, existing steering front axles typically weld a cylinder seat 10 to the side plate to mount the steering cylinder. The existing cylinder seat 10 has a base and two lugs welded to the base. The two lugs are spaced apart, and the distance between them is designed to accommodate the hinged end of the cylinder. To ensure the stability of the welding between the lugs and the base, the base needs to be wide enough to facilitate welding the lugs; a larger base provides a more stable weld to the side plate. This results in a larger installation allowance on the side plate for welding the cylinder seat 10, which inevitably increases the vertical structural thickness of the steering front axle, indirectly reducing the vehicle's ground clearance. Figure 2 The ground clearance is represented by h (the size of the ground clearance h mentioned here is obtained by comparison under the condition that the steering wheels are of the same size), which limits the ability to pass under complex working conditions and makes it difficult to adapt to complex and harsh road conditions.

[0027] Compared to existing technologies, the front axle 100 provided in this embodiment forms a lug portion 1110 extending from the lower wing plate 112 of the front axle body 110 along one side of the width direction of the front axle body 110, and a mounting lug is provided on the side plate 113 at the position corresponding to the lug portion 1110, thereby forming a mounting space 121 for mounting the steering drive mechanism between the mounting lug plate 120 and the lug portion 1110. Compared to existing technologies that directly mount the cylinder seat 10 on the side plate 113, this embodiment utilizes the lug portion 1110 extending from the lower wing plate 112 and the mounting plate to jointly form the mounting space 121 for mounting the steering drive mechanism (not shown), thereby reducing the space occupied by the side plate 113 and effectively reducing the height of the side plate 113, thus reducing the thickness of the entire front axle body 110. When applied to engineering vehicles, this can effectively increase the ground clearance of the vehicle chassis, improve the passability, and adapt to complex and harsh road conditions.

[0028] Please see Figure 2 and Figure 4 In this embodiment, both the mounting ear plate 120 and the ear plate portion 1110 are provided with hinge pin holes 122, and the axes of the hinge pin holes 122 on the mounting ear plate 120 and the ear plate portion 1110 are coaxial. The number of hinge pin holes 122 on the mounting ear plate 120 or the ear plate portion 1110 corresponds to the number of steering drive mechanisms.

[0029] In some embodiments, the number of mounting ear plates 120 and ear plate portions 1110 may be multiple, specifically arranged according to the number of steering drive mechanisms.

[0030] Furthermore, in this embodiment, the ear plate portion 1110 and the lower wing plate 112 are integrally constructed. For example, they are integrally stamped or integrally cast.

[0031] Of course, in some embodiments, it can also be welded into a single structure.

[0032] Please see Figure 2 and Figure 4 The ear plate portion 1110 has a smooth transition portion 1111 between its two sides and the lower wing plate 112 along the length direction of the front axle body 110. This is to avoid stress concentration caused by abrupt changes in cross-section and to improve structural strength.

[0033] Optionally, the smooth transition portion 1111 is an arc transition. In some embodiments, an arc with uniformly varying curvature may also be used for the transition.

[0034] In this embodiment, the outer contour of the mounting ear plate 120 coincides with the outer contour of the ear plate portion 1110 when projected along the thickness direction of the front axle body 110, thereby ensuring that the mounting ear plate 120 and the ear plate portion 1110 have the same external dimensions. And / or, the thickness of the mounting ear plate 120 is the same as the thickness of the ear plate portion 1110, although it is also possible for them to be different.

[0035] Furthermore, the mounting ear plate 120 is welded to the side plate 113. Welding makes the connection between the mounting ear plate 120 and the side plate 113 more secure.

[0036] Please see Figure 4 In this embodiment, the mounting ear plate 120 is provided with two welding feet 123 on the side near the side plate 113. The welding feet 123 are welded to the side plate 113, and an avoidance gap 124 is formed between the two welding feet 123. On the one hand, welding stress can be reduced, and on the other hand, material and processing costs and processing difficulty can be saved (the processing surface of the two welding feet 123 end faces is relatively smaller).

[0037] Please refer to 2. Furthermore, the bent portions 1120 formed at both ends of the lower wing plate 112 can be optimized, and the optimized bent portion 1120 has a bending angle of 138° to 145°. The bending angle of the corresponding side plate 113 is also optimized to match the bent portion 1120, so as to ensure that the entire front axle body 110 has sufficient structural strength.

[0038] In some embodiments, the bending angle of the bending portion 1120 is 140° to 145°.

[0039] Optionally, the bending angle of the bending portion 1120 can also be selected as 140.2°, 140.8°, 141°, 141.4°, 141.7°, 141.9°, 142.5°, 142.7°, 143°, 143.4°, 143.5°, 143.9°, 144°, 144.3°, 144.6°, or 144.8°. It should be understood that the above are merely illustrative examples and are not intended to limit the scope of protection of this application.

[0040] Please see Figure 2 , Figure 3 and Figure 4Furthermore, this embodiment also provides a front axle assembly. The front axle assembly includes the front axle 100 provided above. The front axle assembly also includes a steering tire 200, a wheel-side component 300, a steering pin 400, a suspension cylinder seat 500, a parallel link seat 600, a wheel rim 700, a steering tie rod 800, and a steering drive mechanism. The steering tire 200 is connected and fixed to the wheel-side component 300 via the wheel rim 700. The wheel-side component 300 is connected to the front axle housing via the steering pin 400. The suspension cylinder seat 500 is welded to the upper flange 111 and connects the suspension cylinder and the tie rod. The link seat is disposed on the side plate 113 and is used to connect two parallel links. The steering drive mechanism is selected as a steering cylinder. The hinged part at one end of the steering cylinder is hinged to the mounting space 121 formed between the mounting lug 120 and the lug part 1110 via a pin.

[0041] Furthermore, this embodiment also provides an engineering vehicle, particularly a wide-body mining car. The engineering vehicle includes the aforementioned front axle assembly.

[0042] In wide-body mining cars, the track width L1 of the steering tire 200 can be optionally designed to be 3500mm, and the steering tire 200 has an outward camber of 2° (e.g., Figure 3 As shown in the figure, the ground clearance is represented by h.

[0043] In some embodiments, the engineering vehicle may also be a concrete mixer truck or a truck-mounted crane, etc. It should be understood that the above are merely illustrative examples and are not intended to limit the scope of protection of this application.

[0044] It should be noted that, in this application, unless otherwise stated, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" used to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to 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 this application.

[0045] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0046] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0047] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0048] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A front axle, characterized in that, Includes a front axle body (110) and a mounting lug (120); The front axle body (110) includes an upper wing plate (111) and a lower wing plate (112) arranged in alignment along its own thickness direction, and a side plate (113) is provided between the upper wing plate (111) and the lower wing plate (112). The lower wing plate (112) extends a lug portion (1110) along one side of the width direction of the front axle body (110). The mounting lug (120) is disposed on the side plate (113) and corresponds to the lug portion (1110). An installation space (121) for mounting the steering drive mechanism is formed between the mounting lug (120) and the lug portion (1110).

2. The front axle according to claim 1, characterized in that, The ear plate (1110) and the lower wing plate (112) are integrally constructed.

3. The front axle according to claim 1, characterized in that, The ear plate portion (1110) has a smooth transition portion (1111) between the lower wing plate (112) and both sides of the front axle body (110) along the length direction.

4. The front axle according to claim 3, characterized in that, The smooth transition section (1111) is an arc transition.

5. The front axle according to any one of claims 1-4, characterized in that, In the projection of the front axle body (110) in the thickness direction, the outer contour of the mounting lug (120) coincides with the outer contour of the lug portion (1110); And / or, the thickness of the mounting ear plate (120) is the same as the thickness of the ear plate portion (1110).

6. The front axle according to any one of claims 1-4, characterized in that, The mounting ear plate (120) is welded to the side plate (113).

7. The front axle according to claim 6, characterized in that, The mounting ear plate (120) has two welding feet (123) on the side near the side plate (113). The welding feet (123) are welded to the side plate (113), and an avoidance gap (124) is formed between the two welding feet (123).

8. The front axle according to claim 1, characterized in that, The lower wing plate (112) has bends (1120) at both ends, and the bending angle of the bends (1120) is 138°~145°.

9. A front axle assembly, characterized in that, Includes the front axle (100) according to any one of claims 1-8.

10. An engineering vehicle, characterized in that, Includes the front axle assembly according to claim 9.

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