A self-propelled work platform with obstacle-crossing function using the wave-beam guardrail of the expressway as the guide rail

Abstract

The invention discloses a self-propelled work platform with a wave-beam guardrail of a highway as a guide rail and has an obstacle-overpassing function, which includes a rail-hanging guide device, a planetary obstacle-overpassing device, a load-carrying walking device, and a power transmission device, belonging to expressway maintenance machinery field. Compared with the prior art, the advantages of the present invention are: (1) The shape and structural features of the wave beam guardrail and the guardrail column of the expressway are fully utilized, and the whole machine has a high degree of automation, strong practicability and operability; (2) ) adopts the design of the planetary obstacle-crossing device, and realizes the effective obstacle-crossing of the guardrail column by virtue of the inertial forward movement and overturning of the obstacle-crossing mandrel, the planetary wheel frame and the obstacle-crossing wheel at the moment of encountering an obstacle; (3) the adopted hanging The design of the rail guide and load-carrying walking device has greatly improved the anti-derailment performance, driving linearity, driving stability, bearing capacity, and running speed of the whole machine. It is suitable as a general-purpose expressway maintenance work platform.

Description

technical field [0001] The invention relates to a working platform that can be attached to the guardrail of the expressway wave beam, more particularly, refers to a self-propelled working platform that uses the guardrail of the expressway wave beam as the guide rail and has the function of surmounting obstacles, belonging to expressway maintenance machinery field. Background technique [0002] As of the end of 2014, the total mileage of expressways in my country has reached 112,000 kilometers, surpassing the United States to rank first in the world, and there is undoubtedly a huge demand for expressway maintenance machinery supporting it. At present, highway maintenance machines with a high degree of mechanization are mostly vehicle-mounted, including hedge trimmers, guardrail cleaning machines, road sweepers, and marking machines. The carrying capacity, operating efficiency, operating quality and personnel safety of the vehicle-mounted operating machinery have been effecti...

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Problems solved by technology

[0004]The main problems of the above-mentioned mechanical devices that use the highway divider guardrail as the running track are: (1) The above-mentioned models are deliberately avoiding the guardrail column to move the whole machine interference, and did not propose a positive solution, and the guardrail column, as an important component with high repeatability, is precisely an important bottleneck problem that the above-mentioned models should not avoid; (2) the above-mentioned models are the next best thing, only Relying on a pair of small driving pulleys or sheaves on the upper part to hook on the upper edge of the guardrail in a small area, the whole machine is obliquely placed on the inner side of the guardrail. Due to the small contact area and concentrated force, the whole machine is easy to derail. (3) The above-mentioned hook-and-loop design requires that its driving, walking and hooking mechanism must be arranged obliquely above the outer side of the guardrail, and the guardrail column directly limits its installation space, which poses a challenge to its miniaturization design. Higher requirements; (4) The above-mentioned hook-and-loop design greatly limits the structure, load capacity, running speed and vibration of the whole machine, which indirectly limits the function and work efficiency of the whole machine

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