Landing gear apparatus and assembling method thereof

A landing gear and input shaft technology is applied in the field of a landing gear device supporting a semi-trailer, and a method for assembling a landing gear device bracket

Inactive Publication Date: 2003-11-05
SAF霍兰德公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition to the above-mentioned landing gear bracket, the above-mentioned conventional structure also requires a certain number of parts and mul

Method used

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  • Landing gear apparatus and assembling method thereof
  • Landing gear apparatus and assembling method thereof
  • Landing gear apparatus and assembling method thereof

Examples

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Embodiment Construction

[0043] Detailed description of the preferred embodiment

[0044] figure 1 Illustrates the undercarriage, generally indicated at 10, for supporting the semi-trailer when the semi-trailer is not coupled to a tractor. The landing gear arrangement 10 generally includes a pair of brackets 11 (only one bracket is shown) respectively located at the front corners of the semi-trailer 12 . As is well known, each bracket 11 can be extended to engage the road surface S or other supporting surface, thereby holding the front of said semi-trailer. The foot 14 of the undercarriage 10 is pivotally mounted on the bracket 11 and engages with the road surface S. As shown in FIG. When the above-mentioned semi-trailer 12 is dragged on the ground by a tractor (not shown), the bracket 11 can also be retracted to leave the ground. The crank handle 16 is generally used to extend and contract the length of the above-mentioned bracket 11, as will be described below. The following description is limit...

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PUM

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Abstract

The present invention provides an undercarriage arrangement for a selectively supported semi-trailer and a method for assembling the same. The landing gear assembly includes a bracket having an upper portion and a lower portion telescopically received in the upper portion. A lead screw for extending and retracting the upper and lower parts relative to each other based on the rotation of the lead screw. an input shaft exerting torque on said lead screw to drive rotation thereof, the input shaft rotating about a first axis of rotation and translating along said first axis of rotation so as to operate between a first position in low gear operation and a high speed The gear operates to switch between the second position. An output shaft is axially aligned with the input shaft, the output shaft includes an output gear for transmitting torque to the lead screw. A gear transmission member is housed in said upper portion and is configured such that said gear transmission increases lift when the input shaft is in a first position and increases speed when in a second position.

Description

Background of the invention [0001] The present invention generally relates to a landing gear arrangement for supporting a semi-trailer, and more particularly to a gear transmission structure of the landing gear arrangement. [0002] The undercarriage of the invention finds particular application in the support of semi-trailers when the semi-trailer and tractor are not connected. Conventional undercarriages include a pair of telescoping legs that extend into engagement with the road or other supporting surface to hold the front end of the semi-trailer, retract and clear the ground when the semi-trailer is towed along the road by a tractor. The above-mentioned extension and retraction are often accomplished by the operator manually turning a crank connected to the lead screw of the above-mentioned telescopic bracket through a gear device. The lead screw is connected to the telescopic frame portion of the frame so that a lower frame portion can be retracted into an upper frame p...

Claims

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Application Information

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IPC IPC(8): B62D53/06B60S9/08
CPCB60S9/08
Inventor M·W·彭维勒
Owner SAF霍兰德公司
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