Screed vibrator and paver

Abstract

The invention discloses a screed vibrator, which comprises an eccentric shaft, a blade, a vibration connecting seat, a vibration supporting seat and a fixed guard plate, wherein the eccentric shaft is supported on the vibration supporting seat; the upper end of the vibration connecting seat is sleeved on the eccentric shaft, while the lower end is hinged with a blade mounting seat; and the blade is arranged on the blade mounting seat, and is slidably arranged between the fixed guard plate and a bottom plate of the screed to only move up and down. The screed vibrator has the advantages of simple structure, stable running and low noise. The invention also discloses a paver, which comprises the screed provided with the screed vibrator.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a screed vibrator and a paver. Background technique [0002] With the increase of road mileage and people's high requirements for high-grade roads, the application of paver is more and more widely. From rural roads to expressways, paver plays a very important role in road construction, and as a paving machine The operating device of the paver, the screed, plays the role of tamping and screed during the paving process, and plays a key role in the smoothness and compactness of the pavement after paving. [0003] The paver screed vibrator is mainly used for the preliminary compaction of the paving material spread by the distributor, in preparation for the vibration and screed of the screed plate at the back. The traditional vibrator is mainly composed of an eccentric shaft, a vibrating connection seat and a blade, etc. The vibrating motor is connected with the pulley on the ecc...

AI Technical Summary

Problems solved by technology

[0003] The paver screed vibrator is mainly used for the preliminary compaction of the paving material spread by the distributor, in preparation for the vibration and screed of the screed plate at the back. The traditional vibrator is mainly composed of an eccentric shaft, a vibrating connection seat and a blade, etc. The vibrating motor is connected with the pulley on the eccentric shaft through a belt, and then drives the eccentric shaft to rotate. The vibrating connecting seat sleeved on the eccentric shaft drives the blade fixed on the vibrating connecting seat up and down due to the eccentric effect of the eccentric shaft. However, due to the adoption of the eccentric shaft structure, during the rotation of the eccentric shaft, the vibrating connecting seat and the blade have a forward and backward movement in the horizontal direction in addition to the vertical up and down movement. In fact, the movement of the tool holder plate assembly and the blade can be regarded as a synthesis of these two movements. The traditional vibrating tool holder plate consists of a whole piece of steel plate which is simply cut and connected to the vibrating connection seat on the eccentric shaft with bolts. Connected together, the mass of the knife holder plate assembly is relatively large. During the movement, due to the horizontal movement back and forth, the blade hits the front guard plate and the rear screed plate, resulting in a large acceleration in the horizontal direction. Seriously affect the operation of the vibrating system, causing additional additional movement of the screed as a whole, resulting in instability of the screed, and harsh noise during the impact process, which seriously affects the construction environment and brings great harm to the health of construction workers and environmental protection. Greater hazard

At the same time, in order to compensate for the reduction of the vibrating stroke caused by the wear of the vibrating blade, the vibrator is generally adjustable in the vertical direction, usually based on the bottom end of the blade, and the distance from the bottom of the blade to the screed plate is measured with a ruler. Adjust to make the distance reach the standard size. This adjustment method is very troublesome, time-consuming and laborious in the actual construction process; at the same time, in the horizontal direction, the guard plate is usually tensioned on the plate frame with springs and pull hooks. Since the vibrating blade moves up and down, The constant friction and wear with the guide plate installed on the guard plate increases the gap between the blade and the guide plate, and the spring is not adjustable, so the spring tension decreases, the blade hits the guide plate more violently, and makes a louder noise than normal , affect the surrounding environment, and the connection method of the guard plate is very inconvenient when assembling the screed. At the same time, the spring and the hook are easily broken and damaged under repeated severe vibration conditions.

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