Screed and paver
A technology for a screed and a paver, applied in the field of construction machinery, can solve the problems that the screed is prone to distortion, affects the quality of the paved road, and the torsional rigidity of the screed is small.
Active Publication Date: 2015-01-07
ZOOMLION HEAVY IND CO LTD
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Problems solved by technology
When the screed moves forward, the mixture in the trough exerts a certain resistance on the screed and there is friction between the soleplate of the screed and the road surface, causing the screed to bend backwards and twist, making the extension of the screed The working elevation angle of the screed is smaller than that of the base plate of the screed, and gradually decreases from the base plate of the screed towards the two ends of the screed, which affects the quality of the entire paving surface
Especially for a paver with a larger width, the wider the paving width, the smaller the overall torsional rigidity of the screed, the easier the screed is twisted and deformed, and the attenuation of the working elevation angle of the screed along the width direction is more serious. cause uneven pavement
Method used
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[0029] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and not to limit the present invention.
[0030] In the present invention, if there is no explanation to the contrary, the orientation words used such as "up, down" means such as figure 2 Different height positions in the vertical direction shown, "left and right" refer to figure 1 Different positions on both sides of the center line L-L are shown.
[0031] Such as figure 1 with figure 2 As shown, one aspect of the present invention provides a screed that includes a screed body 1, wherein the screed further includes a left tensioning device 2 and a right tensioning device 3, the left tensioning device 2 and the right tensioning device 2 The tensioning device 3 is arranged symmetrically with respect to the center ...
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The invention discloses a screed. The screed comprises a screed body (1), a left tension device (2) and a right tension device (3), wherein the left tension device (2) and the right tension device (3) are arranged symmetrically relative to a central line (L-L) of the screed body (1), one end of the left tension device (2) and one end of the right tension device (3) are respectively connected with an end portion of the screed body (1) at different height positions of the screed body (1), and the lengths of the left tension device (2) and the right tension device (3) both can be adjusted. The invention also discloses a paver. The torsional rigidity of the whole screed is good and the screed can not be twisted and deformed easily.
Description
Technical field [0001] The invention relates to engineering machinery, in particular to a screed and a paver. Background technique [0002] As the working device of the paver, the screed is installed at the back of the paver. Its main function is to complete the pre-compaction and screed tasks of the mixture. The work of the paver is performed by the screed. [0003] When the paver is working, a working elevation angle is formed between the screed and the road surface. The main engine drags the screed forward through the towing arm, and the mixed material is scraped and pushed by the front baffle, and then enters the compacted space of the rammer. For pre-compaction, the mixture enters the wedge-shaped space between the screed soleplate and the road surface, and then the ironing operation of the mixture is completed under the action of the weight of the screed and the vibration mechanism. [0004] During the operation of the paver, there is a certain amount of mixed material in the ...
Claims
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IPC IPC(8): E01C19/48
Inventor 刘兵华许辉王伟罗丹婷
Owner ZOOMLION HEAVY IND CO LTD