A liftable chassis for a vehicle that keeps the steering wheel support frame vertical

Abstract

The present invention provides a liftable chassis for a vehicle that keeps the steering wheel support frame vertical. The chassis has drive wheels and steering wheels, wherein the steering wheels are installed on a steering wheel support frame that can be telescopically adjusted in height and one end of which is hinged to the chassis. The present invention can simply adjust the ground clearance of the vehicle, facilitating its use in different application scenarios.

Description

Technical Field

[0001] The present invention relates to the fields related to engineering, gardening, and agricultural machinery and tools, and specifically designs a liftable chassis for a vehicle that can conveniently adjust the ground clearance and keep the support legs vertical. Background Art

[0002] In the fields of agricultural and landscaping machinery, etc., for the adjustment of the ground clearance of push-type operating machinery, it is mostly to manually disassemble the support frame of the walking wheel, adjust the ground height, and then re-lock it. The operation is cumbersome and time-consuming. How to adjust the ground clearance of the vehicle more simply and at the same time with a more economical manufacturing cost has become a realistic problem that needs to be solved urgently. Specific application scenarios, such as offset push-type lawn mowers, since the handle side has been turned to the outside of the lawn mower body during operation, it is not convenient to use the method of pressing the handle to lift the other end of the lawn mower to disassemble and adjust the height of the operating support wheel. In a situation like this, if there is a simpler method to adjust the ground clearance, it will significantly reduce the labor intensity and the overall operation time cost. Summary of the Invention

[0003] The present invention provides a liftable chassis for a vehicle that keeps the support frame of the steering wheel vertical. The chassis has a driving wheel and a steering wheel, and the steering wheel is installed on a steering wheel support frame that can be telescopically adjusted in height and one end is hinged to the chassis. The present invention can simply adjust the ground clearance of the vehicle and is convenient for use in different application scenarios.

[0004] A liftable chassis for a vehicle that keeps the support frame of the steering wheel vertical provided by the present invention includes a chassis, a driving wheel, a steering wheel support frame, and a steering wheel. Its structure is as follows:

[0005] A driving wheel is installed on one side of the chassis.

[0006] A limit plate with an arc-shaped groove is installed on the other side of the chassis.

[0007] The steering wheel support frame is a pair of telescopic brackets, the fixed end of which is hinged to one side of the limit plate of the chassis bracket, and the telescopic end is provided with a positioning block, and the positioning block is inserted into the arc-shaped groove of the limit plate.

[0008] The telescopic end is also installed with a steering wheel.

[0009] Further, the fixed end and the telescopic end of the steering wheel support frame are nested together along the telescopic direction with each other, and a linear telescopic adjustment mechanism is provided.

[0010] Further, when the plane of the chassis frame is in a horizontal state, the positioning block at the telescopic end of the steering wheel support frame is at the middle position of the total span of the arc-shaped groove of the limit plate.

[0011] Further, the form of the arc-shaped groove of the limit plate is an involute arc with the axis of the hinge shaft at the fixed end of the steering wheel support frame as the center of the circle. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is an overall three-dimensional view of the present invention.

[0013] Figure 2 is one of the three-dimensional views of the present invention.

[0014] Figure 3 is a rear three-dimensional view of the track of the arc-shaped groove of the limit plate of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0015] The following examples are used to further illustrate the substantial features and advantages of the present invention, but the present invention is not limited to the listed examples.

[0016] See Figure 1 As shown, a drive wheel shaft 2 is installed on the front side of the chassis 1, and drive wheels 3 are installed at both ends of the drive wheel shaft 2.

[0017] A limit plate 5 with an arc-shaped groove 4 is installed at the bottom of the rear side of the chassis 1.

[0018] The fixed end 6 of the steering wheel support frame is hinged to the top of the rear side of the chassis 1 through a hinge 7.

[0019] The top of the telescopic end 8 of the steering wheel support frame is connected to the bottom of the fixed end 6 of the steering wheel support frame through two pairs of telescopic sleeves 9.

[0020] An articulated hole is provided in the middle of the telescopic end 8 of the steering wheel support frame, and a bolt 10 is inserted into the arc-shaped groove 4 of the limit plate 5.

[0021] A pair of steering wheels 11 are installed at the bottom of the telescopic end 8 of the steering wheel support frame.

[0022] A steering link 18 is installed between a pair of steering wheel brackets 17.

[0023] Figure 1 In the state shown, the plane of the chassis 1 frame is in a horizontal state. At this time, the positioning block bolt 10 of the telescopic end 8 of the steering wheel support frame is at the middle position of the total span of the arc-shaped groove 4 of the limit plate.

[0024] See Figure 2 As shown, a screw 12 and a corresponding nut 13 are provided on each of the fixed end 6 and the telescopic end 8 of the steering wheel support frame to adjust the extension amount of the fixed end 6 and the telescopic end 8 of the steering wheel support frame. At the same time, a rotating handle 14 is installed at the other end of the screw 12.

[0025] See Figure 1 , Figure 3As shown, the arc-shaped groove 4 of the limit plate 5 is an involute arc whose center line 15 is centered on the hinge axis 16 of the hinge 7, which is the hinge point of the fixed end of the steering wheel support frame.

[0026] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A liftable chassis for a vehicle to keep the steering wheel support frame vertical, comprising a chassis, drive wheels, a steering wheel support frame and a steering wheel, characterized in that: Drive wheels are installed on one side of the chassis; A limit plate with an arc-shaped groove is installed on the other side of the chassis; The steering wheel support frame is a pair of telescopic brackets, the fixed end of which is hinged to one side of the limit plate of the chassis bracket, and the telescopic end is provided with a positioning block, which is inserted into the arc-shaped groove of the limit plate; The telescopic end is also installed with a steering wheel; The fixed end and the telescopic end of the steering wheel support frame are nested with each other along the telescopic direction and are provided with a linear telescopic adjustment mechanism; When the plane of the chassis frame is in a horizontal state, the positioning block at the telescopic end of the steering wheel support frame is at the middle position of the total span of the arc-shaped groove of the limit plate; The arc-shaped groove of the limit plate is in the form of an involute arc with the center of the hinge shaft of the fixed end of the steering wheel support frame as the center of the circle.

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