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Tractor units for transporting elongated loads

A tractor, slender technology, applied in the direction of vehicles used to carry long cargo, tractors, transport and packaging, which can solve problems such as lack of maneuverability of tractor units and/or trailer units

Pending Publication Date: 2021-09-07
COMBIELEVATOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] While this arrangement is useful, problems persist due to the lack of maneuverability of the tractor unit and / or trailer unit

Method used

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  • Tractor units for transporting elongated loads
  • Tractor units for transporting elongated loads
  • Tractor units for transporting elongated loads

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0057] exist figure 1 In , a tractor unit (generally indicated at 10 ) is shown alongside a load 12 in the form of a wind turbine blade partially supported along its length by a wheeled trailer unit 14 . figure 2 The same arrangement is shown in top view. As can be seen, the tractor unit 10 is in the form of a generally triangular chassis 16 having a wheel set comprising three wheels 18, 20, 22, one at each corner. A load engaging mechanism 24 is mounted on top of the chassis.

[0058] image 3 The tractor unit 10 is shown in enlarged side view with the wheels 18 , 20 , 22 visible and the load engagement mechanism 24 alongside the load 12 . The load engagement mechanism 24 has a pair of arms 26 , 28 mounted on a common axis pin 30 and mounted to a rotational support 32 . Arm 28 is an extendable hydraulic cylinder, and due to the fixed length of arm 26, extension of hydraulic cylinder 28 causes both arms to lift a support plate 34 attached to opposite ends of arms 26 and 2...

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PUM

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Abstract

A tractor unit is disclosed for transporting an elongated load such as a wind turbine blade or wind turbine tower segment. The tractor unit body is supported, driven and steered by a wheel set comprising at least three ground-engaging wheels. At least two of the wheels are steerable and can transform between an aligned mode of operation and a carousel mode of operation. In the aligned mode, the wheels are aligned with one another in a neutral steering position, and steerable to vary the direction of steering. In the carousel mode, the wheels of the wheel set are oriented with their axes of rotation intersecting at a substantially common vertical axis located within the lateral extent of the tractor unit body, so that when the wheels are driven the tractor unit spins about this common vertical axis. A load engagement mechanism is mounted pivotally on the tractor unit body about the common vertical axis. This allows the load engagement mechanism to be counter-rotated in an equal and opposite amount to the angular rotation of the tractor unit body in carousel mode, keeping the load in fixed position relative to the ground as the tractor unit spins.

Description

technical field [0001] The invention relates to a tractor unit for transporting elongate loads, such as wind turbine blades or wind turbine tower sections. Background technique [0002] Elongated loads (eg, wind turbine blades or tower segments, or indeed other items of similar elongated dimensions) cannot be easily accommodated on conventional vehicles (eg, articulated trucks). The length of this load presents significant challenges. [0003] One of the preferred modes of transport comprises a tractor unit and a trailer unit. The tractor unit is driven and steerable and mounted at one end of the load. The trailer unit usually supports the span of the load in the rear half of the load (but not at the rear end). A trailer unit is usually not driven, although it can be driven, and may or may not be steerable. The load itself provides the connection between the tractor unit and the trailer unit. The primary function of the trailer unit is to ensure that the tail end of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60P3/40B62D7/15B62D49/00B62D61/06
CPCB60P3/40B62D7/1509B62D61/06B62D49/00B60G2300/36B62D49/02
Inventor M·麦克维卡R·莫菲特J·莫菲特M·怀特
Owner COMBIELEVATOR