Swing type chassis with variable wheel track

Abstract

The utility model discloses a swing type chassis with variable wheel track, which relates to the technical field of chassis, and comprises a frame, four wheel shafts arranged in a rectangular shape are mounted on the frame, and shaft mounting parts corresponding to the wheel shafts are respectively arranged on the frame. Shaft connecting plates used for being fixedly connected with the corresponding shaft mounting parts are fixedly arranged on the wheel shafts respectively, a plurality of connecting through holes are formed in the shaft connecting plates, and mounting holes corresponding to the connecting through holes are formed in the shaft mounting parts respectively; connecting bolts are installed between the connecting through holes and the corresponding installation holes in a fastened mode. And wheel mounting parts are respectively arranged on the wheel shafts. The utility model has the advantages of high applicability to different field ridge spacing, simple structure and high strength.

Description

TECHNICAL FIELD

[0001] The utility model relates to the chassis technical field especially relates to a variable wheel base's swing type chassis. BACKGROUND

[0002] The traction chassis is used for traction operation machine and provides power source for operation machine, and it is widely used in agricultural machinery. The traction chassis realizes self walking by symmetrical walking mechanism arranged on both sides, wherein, each walking mechanism adopts two walking parts, that is, four-wheel walking traction chassis is used most. When working, two walking mechanisms are across two field ridge positions, and in traction process, the rear operation machine is just for the related operation of the crops between the two field ridges. But because the field ridge distance of different crops is different, the traction chassis is difficult to cross two field ridge positions for walking, which leads to poor applicability for different crops field operation. Therefore, the inventor designs a four-wheel drive traction chassis with variable wheel base to improve the above-mentioned adaptability, and the present application is created. SUMMARY

[0003] The utility model solves the technical problem that a swing type chassis with variable wheel base has high applicability for different field ridge distances, simple structure and high strength.

[0004] To solve the above technical problem, the technical scheme of the utility model is as follows: a swing type chassis with variable wheel base, comprising a frame, four wheel shafts arranged in a rectangular shape are installed on the frame, an axle mounting portion is arranged on the frame corresponding to each wheel shaft, an axle connecting plate for fixed connection with the corresponding axle mounting portion is fixedly arranged on each wheel shaft, a plurality of connecting through holes are arranged on the axle connecting plate, and a mounting hole corresponding to each connecting through hole is arranged on the axle mounting portion; a connecting bolt is tightly installed between the connecting through hole and the corresponding mounting hole; a wheel mounting portion is arranged on the wheel shaft.

[0005] As a preferred technical scheme, a positioning hole is arranged in the middle of the axle mounting portion, and a positioning portion is arranged on the end face of the wheel shaft and inserted into the positioning hole.

[0006] As a preferred technical scheme, a swing frame arranged to swing left and right is installed at the front end and / or rear end of the frame, and the axle mounting portion is fixedly arranged at the left end and right end of the swing frame.

[0007] As a preferred technical scheme, a swing shaft is fixedly arranged on the frame, the swing frame comprises a swing connecting portion rotatably installed on the swing shaft, a horizontally arranged axle mounting arm is fixedly arranged at the bottom end of the swing connecting portion, and a swing range limiting structure is fixedly arranged above each axle mounting arm on the frame.

[0008] According to the technical scheme, the variable wheel base swing chassis comprises a frame, four wheel shafts arranged in a rectangular shape are installed on the frame, an axle mounting portion is arranged on the frame corresponding to each wheel shaft, an axle connecting plate is fixedly arranged on each wheel shaft and is fixedly connected with the corresponding axle mounting portion, a plurality of connecting through holes are arranged on the axle connecting plate, an installation hole corresponding to each connecting through hole is arranged on the axle mounting portion, a connecting bolt is tightly installed between the connecting through hole and the corresponding installation hole, and a wheel mounting portion is arranged on the wheel shaft. BRIEF DESCRIPTION OF DRAWINGS

[0009] The following drawings merely aim to schematically illustrate and explain the present application and do not limit the scope of the present application. Among them:

[0010] Figure 1 is a schematic diagram of a three-dimensional structure of an embodiment of the present application;

[0011] Figure 2 is an enlarged schematic diagram of an A-A structure of Figure 1 ;

[0012] Figure 3 is an enlarged schematic diagram of a B-B structure of Figure 1 ;

[0013] In the figure: 1-frame; 2-wheel shaft; 21-axle connecting plate; 22-connecting through hole; 23-positioning portion; 24-wheel mounting portion; 3-axle mounting portion; 31-installation hole; 32-positioning hole; 4-swing frame; 41-swing shaft; 42-swing connecting portion; 43-axle mounting arm; 44-swing limiting structure. DETAILED DESCRIPTION

[0014] The present application will be further described below in combination with the drawings and embodiments. In the following detailed description, only some exemplary embodiments of the present application are described by way of illustration. It is self-evident that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present application. Therefore, the drawings and description are essentially illustrative and are not used to limit the protection scope of the claims.

[0015] As Figure 1 , Figure 2 and Figure 3 shown in common, the variable wheelbase swing chassis, comprising a frame 1, the frame 1 is mounted on four rectangular arrangement of wheel shaft 2, of course, four wheel shaft 2, the front two wheel shaft 2 coaxial, rear two wheel shaft 2 coaxial. In which, the front, rear, left and right direction of the embodiment is defined as the front, rear, left and right direction during the chassis running, which is not intended to limit the scope of protection.

[0016] The frame 1 is provided with an axle mounting portion 3 corresponding to each of the wheel shafts 2, and each of the wheel shafts 2 is fixedly provided with an axle connecting plate 21 for fixed connection with the corresponding axle mounting portion 3. The axle connecting plate 21 is provided with a plurality of connecting through holes 22, and the axle mounting portion 3 is provided with a mounting hole 31 corresponding to each of the connecting through holes 22. A connecting bolt is tightly installed between the connecting through hole 22 and the corresponding mounting hole 31. The connecting strength is high by the plurality of connecting bolts, and the wheel shaft 2 forms a detachable structure, which is convenient for disassembly and replacement with a wheel shaft 2 of different length for use.

[0017] Preferably, the middle part of the axle mounting portion 3 is provided with a positioning hole 32, and the end face of the wheel shaft 2 is provided with a positioning portion 23 inserted into the positioning hole 32. After the positioning portion 23 is inserted into the positioning hole 32, the alignment of the connecting through hole 22 and the corresponding mounting hole 31 is quickly completed, which is beneficial to improve the replacement efficiency of the wheel shaft 2. After installation, the positioning portion 23 cooperates with the positioning hole 32 to form a reinforcing effect of the wheel shaft 2 against bending to a certain extent, further improving the connecting strength.

[0018] The wheel shaft 2 is provided with a wheel mounting portion 24, which is used to mount a corresponding walking component. The walking component can be a hub tire type or a triangular track type, which is not limited here. Correspondingly, the wheel mounting portion 24 is a flange in a flange connection structure or a shaft segment in a shaft sleeve connection structure, which is not limited here. Through the detachable connection of the wheel shaft 2 and the walking component, and the detachable connection of the wheel shaft 2 and the axle mounting portion 3, the wheel shaft 2 can be processed in different lengths in advance in actual application, and can be replaced according to different field ridge distances during use, so that both walking components can walk on the field ridge position, achieving high applicability to different field ridge distances. The structure of the embodiment is simple, and does not need bearing and other structures, which is especially suitable for four-wheel independent drive traction chassis.

[0019] Preferably, a swing frame 4 with a left-right swing configuration is installed at the front end and / or rear end of the frame 1, and the axle mounting part 3 is fixedly installed at the left and right ends of the swing frame 4, respectively. Thus, the two front and / or two rear traveling components can form a swinging pattern, which is beneficial for improving the ability to travel on undulating roads. This embodiment only illustrates the installation of the swing frame 4 at the front end.

[0020] More preferably, in this embodiment, a swing shaft 41 is fixedly provided on the frame 1. The swing frame 4 includes a swing connecting part 42 rotatably mounted on the swing shaft 41. A horizontally arranged shaft mounting arm 43 is fixedly provided at the bottom end of the swing connecting part 42. Of course, the shaft mounting parts 3 are fixedly provided at the left and right ends of the shaft mounting arm 43 respectively. A swing amplitude limiting structure 44 is fixedly provided on the frame 1 above each of the shaft mounting arms 43. By increasing the swing center height of the swing frame 4 through the swing connecting part 42, the swing center, that is, the swing shaft 41, is closer to the height of the vehicle's center of gravity, which can improve the stability of the vehicle when passing over undulating roads. The swing amplitude limiting structure 44 can limit the swing amplitude, avoid excessive swinging and affect the balance of the vehicle, and ensure smooth driving. The swing amplitude limiting structure 44 can be implemented by a plate, rod, or frame that can rigidly limit the shaft mounting arm 43, etc., and is not limited here.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A swing-axle chassis with variable wheel track comprising a frame characterised in that: The frame is provided with four wheel shafts arranged in a rectangular shape, and each wheel shaft is provided with a shaft mounting portion corresponding to the wheel shaft.

2. The swing chassis of variable wheel track of claim 1, wherein: The middle part of the shaft mounting portion is provided with a positioning hole, and the end face of the wheel shaft is provided with a positioning portion inserted into the positioning hole.

3. The swing-axle chassis of claim 1, wherein: The front end and / or rear end of the frame is provided with a swing frame arranged to swing left and right, and the left end and right end of the swing frame are respectively provided with the shaft mounting portion.

4. A swing-axle chassis of variable track according to claim 3, wherein: The frame is fixedly provided with a swing shaft, and the swing frame comprises a swing connecting portion rotatably mounted on the swing shaft, the bottom end of the swing connecting portion is fixedly provided with a transversely arranged shaft mounting arm, and the frame is provided above each shaft mounting arm and is fixedly provided with a swing limiting structure.

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