Concrete spreader

Abstract

The invention discloses a concrete spreader. The concrete spreader comprises a support (1) and a hopper (2) connected with the support (1). A discharging outlet (4) is formed in the lower end of the hopper (2). A discharging accelerating device (3) is arranged in the discharging outlet (4). Compared with the prior art, since the discharging accelerating device is arranged in the discharging outlet, under the effect of the discharging accelerating device, concrete falling via the discharging outlet has a certain initial velocity, the falling velocity is higher, and the concrete is compact whenfalling into a tube pile steel mould; the discharging accelerating device enables the volume of the concrete passing through the discharging outlet within a unit time period to be greater than the volume of the concrete falling under gravity within the unit time period, and the purpose of increasing the output capacity can be achieved without needing to increasing the opening degree of the discharging outlet; and in addition, the discharging accelerating device does not make complete contact with the concrete, a viscous effect of the concrete on the discharging accelerating device is small, accordingly, power needed for the discharging accelerating device is low, and abrasion is small.

Description

technical field [0001] The invention relates to a concrete distributing machine. Background technique [0002] At present, there are two types of concrete placing machines in the prior art, one is an ordinary curtain-type concrete placing machine, and the other is a dragon-type placing machine; Closing to achieve or stop the action of material distribution, the concrete in the hopper will fall by its own gravity during material distribution, if you want to increase the amount of material distribution, you need to increase the opening degree of the discharge door, but this will easily make the opening of the discharge port If the thickness is greater than the diameter of the steel formwork for pipe piles, the falling concrete is easily scattered outside the steel formwork for pipe piles and the mold closing part. It is necessary to carefully clean the steel formwork for pipe piles before closing the molds. There are problems that the blanking is not dense enough, the distrib...

AI Technical Summary

Problems solved by technology

[0002] At present, there are two types of concrete placing machines in the prior art, one is an ordinary curtain-type concrete placing machine, and the other is a dragon-type placing machine; Closing to achieve or stop the action of material distribution, the concrete in the hopper will fall by its own gravity during material distribution, if you want to increase the amount of material distribution, you need to increase the opening degree of the discharge door, but this will easily make the opening of the discharge port If the thickness is greater than the diameter of the steel formwork for pipe piles, the falling concrete is easily scattered outside the steel formwork for pipe piles and the mold closing part. It is necessary to carefully clean the steel formwork for pipe piles before closing the molds. There are problems that the blanking is not dense enough, the distribution efficiency is low, and the supply of concrete cannot be effectively controlled; the latter is equipped with a horizontal dragon under the hopper, that is, a screw-type feeding device, and the concrete is sent to the outlet through the dragon. Although the distribution machine with this structure can accurately control the amount of blanking, the concrete will fall by its own gravity after reaching the outlet, so the problem of loose blanking has not been solved. Due to the characteristics of hysteresis, the large power required for the rotation of the dragon, the energy consumption and the wear of the dragon are high, which makes the use cost higher

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