Adjustable width vehicle frame

Abstract

This invention relates to an adjustable-width vehicle frame, which mainly consists of two wheel assembly stands on each side of a main frame, with the main frame and the two wheel assembly stands pivotally connected by several connecting rods. A bushing is movably fitted onto the main frame, and this bushing is pivotally connected to each of the two wheel assembly stands by connecting rods. A telescopic power source is located between the main frame and the wheel assembly stands. Wheels are mounted on the two wheel assembly stands. When the wheelbase on the left and right sides needs to be adjusted, the telescopic power source can be driven to move the main frame forward and backward, thereby pulling the connecting rods pivotally connected to the main frame and moving the two wheel assembly stands in the forward and reverse directions of the main frame. This allows for convenient adjustment of the wheelbase between the left and right wheels.

Claims

1. An adjustable-width vehicle frame, comprising: two wheel assembly stands, which are arranged parallel to each other and spaced apart, each wheel assembly stand having an inner side and an outer side, and a number of first pivots provided on the inner side of each wheel assembly stand along its length; a frame main rod, which is disposed between the two wheel assembly stands and is arranged parallel to them, and a void area is formed between the frame main rod and each of the two wheel assembly stands, and a number of second pivots are provided on the opposite sides of the frame main rod along its length, and a sliding section is pre-set on the frame main rod; a bushing, which has a sleeve hole, and the sleeve hole of the bushing is movably fitted with the sliding section of the frame main rod, and at least one third pivot is provided on the opposite sides of the bushing; A number of connecting rods are respectively disposed in two empty areas formed between the main frame and the two wheel assembly frames. The two ends of the connecting rods are respectively pivotally connected to the first pivot of the wheel assembly frame and the second pivot of the main frame. In addition, the two ends of at least two connecting rods located in the two empty areas are each pivotally connected to at least one first pivot of the two wheel assembly frames and at least one third pivot on opposite sides of the bushing. At least one telescopic power source is disposed in at least one empty area formed between the main frame and the two wheel assembly frames. The two ends of the telescopic power source are respectively pivotally connected to one first pivot of the wheel assembly frame and one second pivot of the main frame.

2. The adjustable-width vehicle frame as described in claim 1, wherein, The sliding section of the main frame is provided with a number of first locking holes along its length, and at least one second locking hole is provided on the bushing. The at least one second locking hole of the bushing corresponds to the position of any of the first locking holes provided on the sliding section of the main frame. A locking fastener is provided to pass through and be fixed to the corresponding second locking hole and the first locking hole.

3. The adjustable-width vehicle frame as described in claim 2, wherein, The locking device is either a pin or a screw.

4. The adjustable-width vehicle frame as described in claim 1, wherein, The telescopic power source is a stepless hydraulic cylinder or an electric cylinder.

5. The adjustable-width vehicle frame as described in claim 1, wherein, The wheel assembly frame has a wheel mounted at the front and rear positions on its outer side.

6. The adjustable-width vehicle frame as described in claim 1, wherein, The wheel assembly has a track wheel mounted on its outer side at the front and rear positions, and a track is wound around the front and rear track wheels.

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