Combustion chamber of paver

Abstract

The invention provides a combustion chamber of a paver, which comprises a screed box having a bottom screed, a combustion chamber, a linear heater having a linear heating pipe and a heat-insulating plate which is arranged in the combustion chamber and positioned between the linear heating pipe and the bottom screed. The combustion chamber is capable of solving the problem that the quality of roadpaving is lowered due to the deformation of the bottom screed caused by the local overheat of the bottom screed.

Description

technical field [0001] The invention relates to the field of road construction equipment, more specifically, to a combustion chamber structure of a paver. Background technique [0002] At present, the heating system of the paver mainly has three heating methods: 1. Gas heating method: the fuel is propane gas, including: (1) Nozzle heating method, propane gas passes through the pressure reducing valve, pipeline, switch, to the nozzle, and is ignited The nozzles heat the screed. (2) Fan burner heating method, propane gas passes through the pressure reducing valve, pipes to the fan burner, turns on the fan burner, blows hot air into the screed combustion chamber to heat the soleplate. (3) Heating method of linear heater, please refer to figure 2 , the propane gas passes through the pressure reducing valve, gas valve, pipeline to the linear heating tube of the linear heater. After the spark plug 60 is ignited, the propane gas flowing out from the linear heating tube 70 is igni...

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Problems solved by technology

[0003] Among the above heating methods, except for the linear heater heating method, the other heating methods have more or less problems such as slow heating and poor heating uniformity. The screed soleplate is prone to local deformation and distortion due to long-term uneven heating. Moreover, the amount of gas or electricity consumed is large. When the outdoor temperature is low, even if it is burned for a long time, the temperature is difficult to rise, so that the screed floor cannot work normally, which seriously affects the quality and progress of pavement paving.

[0004] Although the heating method of the linear heater has the characteristics of fast heating, the combustion chamber of the paver is a cavity formed by the screed box of the paver, and the linear heating tube of the linear heater is located in the combustion chamber. The flame from the tube directly heats the screed, because the linear heating tube is generally located near the middle of the screed, and the propane gas in the middle of the linear heating tube burns more fully than the propane gas in the two ends, which is easy to cause screed. The soleplate is heated unevenly, so the heating method of the linear heater in the prior art has the following problems: the middle temperature of the screed soleplate is higher than the edge temperature and the temperature difference is very large; the screed soleplate is especially located at the combustion flame of the linear heating tube Due to the long-term radiation of high temperature, the thermal stress is concentrated in the area, which is prone to annealing reaction, produces scale, and reduces the wear resistance of the screed sole plate material. When encountering obstacles, the screed sole plate thermal stress concentration area is more likely to deform , affecting the smoothness of the paved road and shortening the service life of the screed

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