Axle assembly and tractor

Abstract

The utility model relates to the technical field of engineering machinery, and discloses an axle assembly and a tractor. The axle assembly comprises an axle, and a first hub with the wheel track to be adjusted is installed at the end of the axle. And the wheel track adjusting device is telescopically connected between the end part of the axle and the first hub. The tractor comprises the axle assembly. According to the axle assembly, adjustment of the distance between the first hub and the axle is achieved through telescopic movement of the wheel track adjusting device. Compared with the mode that the hub installation mode is manually switched in the prior art, the telescopic movement of the wheel track adjusting device is controllable, automatic stepless wheel track adjustment can be achieved, and the wheel track adjusting device is suitable for various working environments; and repeated disassembly and assembly are not needed, and adjustment is convenient and fast.

Description

Technical Field

[0001] The present application belongs to the technical field of engineering machinery, and specifically relates to an axle assembly and a tractor. Background Art

[0002] The existing tractor wheelbase adjustment method mainly relies on manpower to switch the wheel hub installation form, such as Figure 1 and Figure 2 As shown, this is not only time-consuming and labor-intensive, but also poses potential safety risks during user disassembly and assembly. Tractors often require multiple adjustments in different operating environments, and manual disassembly and assembly severely impacts operational efficiency. Furthermore, wheel hub installation options are limited, with only a few preset wheel widths available, making it difficult to adapt to complex operating environments. Summary of the Invention

[0003] The purpose of the present application is to provide an axle assembly and a tractor to achieve wheelbase adjustment simply and conveniently.

[0004] To achieve the above objectives, the present application provides, on one hand, an axle assembly, the axle assembly comprising:

[0005] an axle, the end of which is mounted with a first wheel hub to be adjusted in wheelbase;

[0006] The wheelbase adjusting device is arranged along the direction of the vehicle axle and is telescopically connected between the end of the vehicle axle and the first wheel hub.

[0007] In some embodiments, the axle assembly includes:

[0008] a second wheel hub fixedly mounted on the end of the axle;

[0009] The first wheel hub is spaced apart and arranged axially outside the second wheel hub, and the wheelbase adjustment device is arranged between the first wheel hub and the second wheel hub.

[0010] In some embodiments, the wheelbase adjustment device comprises:

[0011] A plurality of telescopic drive mechanisms are provided, wherein the telescopic drive mechanisms extend along the axial direction of the vehicle axle, and the plurality of telescopic drive mechanisms are arranged at intervals in the circumferential direction and form a concentric circle distribution coaxial with the vehicle axle.

[0012] In some embodiments, the multiple telescopic drive mechanisms are hydraulic cylinders of the same specifications.

[0013] In some embodiments, the telescopic drive mechanism is provided with a quick connector for hydraulic connection.

[0014] In some embodiments, the wheelbase adjustment device comprises:

[0015] End flange plates, and both ends of the telescopic drive mechanism are respectively connected between the end flange plates at both ends.

[0016] In some embodiments, the wheelbase adjustment device comprises:

[0017] The fixed plate is arranged in parallel between the end flange plates at both ends and is sleeved and fixed on each telescopic driving mechanism.

[0018] In some embodiments, the wheelbase adjustment device comprises:

[0019] The guide rod is arranged parallel to the axle and passes through between the fixing plate and the end flange plate located on the outside.

[0020] In some embodiments, a guide through hole is provided on the fixing plate, the inner end of the guide rod passes through the guide through hole and a limiting boss is provided at the protruding end, and the outer end of the guide rod is fixedly connected to the outer end flange plate.

[0021] On the other hand, the present application protects a tractor comprising the above-mentioned axle assembly.

[0022] In the technical solution of this application, a telescopic wheelbase adjustment device is provided between the end of the axle and the first wheel hub. Adjustment of the distance between the first wheel hub and the axle is achieved through the telescopic movement of the wheelbase adjustment device. Compared to the prior art method of manually switching wheel hub installation, the telescopic movement of the wheelbase adjustment device of this application is controllable, enabling simple and convenient wheelbase adjustment, and even automatic, stepless wheelbase adjustment, which is conducive to adapting to various working environments. Furthermore, it does not require repeated disassembly and assembly, making adjustment convenient and quick.

[0023] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without inventive work. In the drawings:

[0025] Figure 1 This is a schematic structural diagram of a wide wheelbase hub installation in the prior art;

[0026] Figure 2 It is a structural schematic diagram of a narrow wheelbase hub installation form in the prior art;

[0027] Figure 3 Schematic diagram of the structure of a wheelbase adjustment device of an axle assembly according to a specific embodiment of the present application;

[0028] Figure 4 This is a schematic structural diagram of an axle assembly according to an embodiment of the present application, showing the vehicle in a wide track state;

[0029] Figure 5 for Figure 4 The structural diagram of the axle assembly in FIG shows the vehicle in a narrow track state;

[0030] Figure 6 This is a schematic structural diagram of an axle assembly according to another embodiment of the present application, showing a vehicle in a wide track state;

[0031] Figure 7 for Figure 6 The structural diagram of the axle assembly in Figure 1 shows the vehicle in a narrow wheelbase state.

[0032] Description of Reference Numerals

[0033] B Axle 200 fixing plate

[0034] M moving end 300 guide rod

[0035] F Fixed end 310 limit boss

[0036] W1 First hub 400 end flange plate

[0037] W2 Second Hub 500 Quick Connector

[0038] 100 Telescopic drive mechanism B1 Axle axis DETAILED DESCRIPTION

[0039] The following describes the specific embodiments of the present application in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present application and are not intended to limit the present application.

[0040] The axle assembly and the tractor according to the present application will be described below with reference to the accompanying drawings.

[0041] It should be noted that, in this application, unless otherwise stated, terms such as “upper, lower, front, back, inside, outside” generally refer to directions shown in the accompanying drawings.

[0042] This application discloses a new type of axle assembly, such as Figures 3 to 5 As shown, the axle assembly in one embodiment includes:

[0043] Axle B, with a first wheel hub W1 to be adjusted for wheelbase mounted on the end of axle B;

[0044] The wheelbase adjustment device is arranged along the axle direction and is telescopically connected between the end of the axle B and the first wheel hub W1.

[0045] Specifically, see Figure 4 and Figure 5 The fixed end F (the right end in the figure) of the wheelbase adjustment device is connected to the first wheel hub W1, and the movable end M of the wheelbase adjustment device is connected to the end of the axle B. The wheelbase adjustment device drives the movable end M to extend and retract relative to the fixed end F along the axle axis B1, and adjusts the distance between the movable end M and the fixed end F to a preset value, thereby changing the wheelbase. Compared to the prior art operation method that relies on manual switching of the wheel hub installation form, the wheelbase adjustment device of the present application can achieve wheelbase adjustment without repeated disassembly and assembly of the wheel hub, which is convenient and fast; it can also achieve infinite adjustment of the wheelbase, and is more adaptable to various working environments.

[0046] Of course, the movable end M of the wheelbase adjustment device may also be connected to the first wheel hub W1 , while the fixed end F of the wheelbase adjustment device is connected to the end of the axle B.

[0047] The wheelbase adjustment device can be arranged in a variety of ways in the axle assembly. In this embodiment, Figure 3 、 Figure 6 and Figure 7 As shown, the axle assembly may include:

[0048] The second wheel hub W2 is fixedly mounted on the end of the axle B;

[0049] The first wheel hub W1 is spaced apart and arranged axially outside the second wheel hub W2 , and the wheelbase adjustment device is arranged between the first wheel hub W1 and the second wheel hub W2 .

[0050] Specifically, see Figure 6 and Figure 7 The wheelbase adjustment device's movable end M is connected to the first wheel hub W1, while its fixed end F is connected to the second wheel hub W2. The wheelbase adjustment device drives the movable end M to extend and retract relative to the fixed end F, adjusting the distance between the first and second wheel hubs W1 and W2 to a preset value. With the increased number of wheels, the vehicle's load capacity and traction capability also increase. Furthermore, the wheelbase adjustment of the first and second wheel hubs W1 and W2 further enhances the vehicle's adaptability to various operating environments.

[0051] It is understood by those skilled in the art that the number of wheelbase adjustment devices is not limited to one as shown in the figure, but may be multiple, such as symmetrically arranged at both ends of the axle B; the wheelbase adjustment device is not limited to Figure 6 、 Figure 7As shown, it is only arranged between the first wheel hub W1 and the second wheel hub W2. The axle assembly may also include a first wheel distance adjustment device and a second wheel distance adjustment device and a third wheel hub arranged axially outside the second wheel hub W2. The first wheel distance adjustment device is arranged along the direction of the axle and is telescopically connected between the first wheel hub W1 and the second wheel hub W2. The second wheel distance adjustment device is arranged along the direction of the axle and is telescopically connected between the second wheel hub W2 and the third wheel hub.

[0052] In this embodiment, if Figure 3 As shown, the wheelbase adjustment device may include:

[0053] The plurality of telescopic drive mechanisms 100 extend along the axial direction of the axle B. The plurality of telescopic drive mechanisms 100 are arranged at intervals in the circumferential direction and form a concentric circle distribution coaxial with the axle B.

[0054] Specifically, see Figures 3 to 7 As an example, the wheelbase adjustment device includes six telescopic drive mechanisms 100, which are circumferentially spaced and arranged concentrically around axle B. This arrangement not only enhances the driving capability of the wheelbase adjustment device through the multiple telescopic drive mechanisms 100, but also improves the stress applied to each telescopic drive mechanism 100 and the dynamic balance of the wheelbase adjustment device during vehicle operation, thereby enhancing the reliability of the wheelbase adjustment device.

[0055] In this embodiment, the multiple telescopic drive mechanisms 100 can be hydraulic cylinders of the same specifications.

[0056] Specifically, the hydraulic cylinder has high power density and good impact resistance; hydraulic cylinders of the same specifications can ensure that the force on the first wheel hub W1 is uniform and the extension process is stable and smooth.

[0057] Of course, those skilled in the art will understand that the number of telescopic drive mechanisms 100 is not limited to the six shown in the figure, nor is it limited to hydraulic cylinders. The number of telescopic drive mechanisms 100 can be changed according to the needs of the actual working environment, or the telescopic drive mechanism 100 can be set as an electric linear push rod.

[0058] In this embodiment, if Figure 3 As shown, the telescopic drive mechanism 100 may be provided with a quick connector 500 for hydraulic connection.

[0059] Specifically, see Figure 3 The quick connector 500 is connected to the oil inlet of the oil cylinder of the telescopic drive mechanism 100. Such an arrangement is beneficial for the vehicle to supply oil to the hydraulic cylinder and facilitates the flexible arrangement and disassembly of the wheelbase adjustment device.

[0060] Of course, those skilled in the art will appreciate that the location of the quick connector 500 is not limited to the movable end shown in the figure, but may also be other locations.

[0061] In this embodiment, if Figure 3 As shown, the wheelbase adjustment device may include:

[0062] The end flange plates 400 , and both ends of the telescopic driving mechanism 100 are respectively connected between the end flange plates 400 at both ends.

[0063] Specifically, see Figures 3 to 7 Both ends of the telescopic drive mechanism 100 are detachably connected to the wheel hub or axle B through the end flange plates 400. Such an arrangement is conducive to the flexible installation and disassembly of the wheelbase adjustment device.

[0064] Of course, the telescopic drive mechanism 100 may also be detachably connected to the wheel hub or the axle B at only one end through the end flange plate 400 .

[0065] In this embodiment, if Figure 3 As shown, the wheelbase adjustment device may include:

[0066] The fixing plate 200 is arranged parallel to the end flange plates 400 at both ends and is sleeved to fix each telescopic driving mechanism 100 .

[0067] Specifically, see Figure 3 The fixing plate 200 arranged parallel to the end flange plate 400 can connect the various telescopic drive mechanisms 100 into a whole, which not only makes the force of each telescopic drive mechanism 100 uniform, but also improves the shear resistance performance of the wheelbase adjustment device.

[0068] In this embodiment, if Figure 3 As shown, the wheelbase adjustment device may include:

[0069] The guide rod 300 is arranged parallel to the axle B and passes between the fixing plate 200 and the end flange plate 400 located on the outside.

[0070] Specifically, see Figure 3 The number of the guide rods 300 can also be multiple, and the guide rods 300 and the telescopic driving mechanism 100 are alternately arranged along the circumference of the driving member fixing plate 200. Among them, the guide rods 300 can also be set as end flange plates 400 that pass through both ends.

[0071] When the guide rod 300 is connected through the fixed plate 200 and the end flange plate 400 located on the outside, not only can the telescopic stability of the movable end M be improved through the guide rod 300, but the shear force exerted on the telescopic drive mechanism 100 can also be shared by the guide rod 300 and the fixed plate 200, thereby greatly improving the reliability of the wheelbase adjustment device.

[0072] In this embodiment, if Figure 3 As shown, the fixing plate 200 may be provided with a guide hole, the inner end of the guide rod 300 passes through the guide hole and the protruding end is provided with a limiting boss 310, and the outer end of the guide rod 300 is fixedly connected to the outer end flange plate 400.

[0073] Specifically, see Figure 3 The movable end M of the guide rod 300 is fixedly connected to the end flange plate 400, and the other end is movably connected to the fixed plate 200. The arrangement of the guide rod 300 is not limited to the aforementioned arrangement in which the outer end is fixedly connected to the outer end flange plate 400 and the inner end passes through the guide hole. When the movable end M is arranged inward, the inner end of the guide rod 300 can also be fixedly connected to the inner end flange plate 400, and the outer end passes through the guide hole.

[0074] With such a configuration, after the limiting boss 310 abuts against the fixing plate 200 , the moving end M of the wheelbase adjustment device can be restricted from moving further away from the fixed end F.

[0075] The present application discloses a novel tractor. In a specific embodiment, the tractor includes the above-mentioned axle assembly.

[0076] The tractor has all the technical effects brought about by the above-mentioned axle assembly, which will not be described in detail here. The number of axle assemblies is not limited to one.

[0077] 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 understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0078] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0079] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

Claims

1. Axle assembly, characterized in that: The axle assembly includes: an axle (B), wherein a first wheel hub (W1) whose wheelbase is to be adjusted is mounted at an end of the axle (B); A wheelbase adjustment device is provided along the axle direction and is telescopically connected between the end of the axle (B) and the first wheel hub (W1); a fixed end (F) of the wheelbase adjustment device is connected to the first wheel hub (W1), and a movable end (M) of the wheelbase adjustment device is connected to the end of the axle (B); the wheelbase adjustment device comprises a plurality of telescopic drive mechanisms (100), the telescopic drive mechanisms (100) extending along the axial direction of the axle (B), and the plurality of telescopic drive mechanisms (100) are circumferentially spaced.

2. The axle assembly according to claim 1, characterized in that: The axle assembly includes: a second wheel hub (W2) fixedly mounted on an end portion of the axle (B); The first wheel hub (W1) is spaced apart and arranged axially outside the second wheel hub (W2), and the wheelbase adjustment device is arranged between the first wheel hub (W1) and the second wheel hub (W2).

3. The axle assembly according to claim 1 or 2, characterized in that: The plurality of telescopic drive mechanisms (100) are distributed in a concentric circle shape coaxial with the axle (B).

4. The axle assembly according to claim 3, characterized in that: The plurality of telescopic drive mechanisms (100) are hydraulic cylinders of the same specification.

5. The axle assembly according to claim 4, characterized in that: The telescopic drive mechanism (100) is provided with a quick connector (500) for hydraulic connection.

6. The axle assembly according to claim 3, characterized in that: The wheelbase adjustment device comprises: End flange plates (400), and both ends of the telescopic drive mechanism (100) are respectively connected between the end flange plates (400) at both ends.

7. The axle assembly according to claim 6, characterized in that: The wheelbase adjustment device comprises: The fixing plate (200) is arranged in parallel between the end flange plates (400) at both ends and is sleeved to fix each of the telescopic driving mechanisms (100).

8. The axle assembly according to claim 7, characterized in that: The wheelbase adjustment device comprises: A guide rod (300) is arranged parallel to the axle (B) and is connected between the fixing plate (200) and the end flange plate (400) located on the outside.

9. The axle assembly according to claim 8, characterized in that: The fixing plate (200) is provided with a guide through hole, the inner end of the guide rod (300) passes through the guide through hole and the protruding end is provided with a limiting boss (310), and the outer end of the guide rod (300) is fixedly connected to the outer end flange plate (400).

10. A tractor, characterized in that The tractor comprises the axle assembly according to any one of claims 1 to 9.

Images