Ironing plate and spreading machine

Abstract

The invention discloses an ironing plate and a spreading machine using the same. The ironing plate comprises an ironing plate main body, side guards, and a levelling bracket connected to the side guards, wherein the levelling bracket comprises a cross arm and a vertical arm which are mutually connected; the cross arm is connected with the side guards, and the lower end of the vertical arm is provided with a longitudinal levelling sensor; the side guards are elastically connected with the ironing plate main body by virtue of multiple damping blocks. By virtue of changing the arrangement positions of the damping blocks, the side guard with relatively high mass is added into a damping system consisting of the longitudinal levelling sensor and the levelling bracket, so that the mass of the damping system is greatly improved, and the inherent frequency of the damping system is reduced; when the damping blocks have certain rigidity, the damping system can achieve a favorable damping effect on the low-frequency vibration, the detection precision of the longitudinal levelling sensor is improved, and the flatness of a formed pavement is improved.

Description

technical field [0001] The invention relates to a screed and a paver using the screed, which reduces the impact of the vibration of the screed on a longitudinal leveling sensor, improves the detection accuracy of the longitudinal leveling sensor, and improves the flatness of a formed road surface. Background technique [0002] like figure 1 As shown, the paver generally includes a main machine 1 and a screed 2, and the screed 2 is hinged on the leveling cylinder 11 of the main machine 1 through two booms 3 on the left and right sides (only one boom 3 is shown in the figure). . The main engine 1 is responsible for receiving the mixed material and transporting it to the entire paving width in front of the screed 2, and dragging the screed 2 forward; the screed 2 is responsible for smoothing and compacting the mixed material to form the road surface. [0003] The smoothness of the formed pavement 100 is a critical performance indicator for paving operations. Usually, a longi...

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Problems solved by technology

[0008] image 3 and Figure 5 In the vibration damping scheme adopted in the prior art shown, the stiffness of the damping block is limited and cannot be too low, and the quality of the vibration damping system (composed of leveling brackets and longitudinal leveling sensors) is relatively low, so the vibration damping The natural frequency of the system is also relatively high

Therefore, it can only play a damping effect on some particularly high-frequency vibrations, and sometimes not only does not have a damping effect on some vibrations that occur in normal work, but also often amplifies the vibration, thereby affecting the smoothness of the formed road surface. adversely affect

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