An improved skip fixed-weight loading equipment

Abstract

The invention discloses improved skip weight-fixed loading equipment, which belongs to the technical field of weighing. A sector gate is mounted at an discharge port of a weight-fixing hopper; a weighing sensor is mounted at the bottom of the weight-fixing hopper; an sector gate oil cylinder is welded on the side wall of the weight-fixing hopper; the sector gate is connected with the sector gate oil cylinder; a coal level meter is mounted in a surge bunker; the discharge port of the surge bunker is positioned at the bottom of the bunker; a flat gate is mounted at the discharge port and is connected with a flat gate oil cylinder; the surge bunker is positioned right above the weight-fixing hopper; counterweight lifting oil cylinders are mounted below the two side walls of the weight-fixing hopper respectively; the oil paths of the flat gate oil cylinder, the counterweight lifting oil cylinders and the sector gate oil cylinder are connected with a hydraulic pump station; the coal lever meter, the weighing sensor, a belt conveyor and the hydraulic pump station are electrically connected with a controller in a lifting control chamber. The improved skip weight-fixed loading equipment has the advantages of high coal loading precision, strong reliability, avoidance of frequent exchange of the weighing sensor and reduction in maintenance cost.

Description

technical field [0001] The invention relates to an improved skip fixed-weight loading device, which belongs to the technical field of weighing. Background technique [0002] Skip loading equipment is an intermediate storage and metering device for loading raw coal from underground coal bunkers to skips. In the early days of the founding of the People's Republic of my country, the pressure plate type sliding coal nozzle was widely used as the loading equipment in our country. This kind of loading equipment has a large amount of coal spreading and a large impact force when loading coal, so quantitative loading cannot be realized, which seriously affects the safety of coal mine production. Most of the vertical shaft skip loading equipment used in coal mines built in the 1980s is of the quantitative bucket type. This is a pre-measured loading method, which can not only greatly reduce the amount of coal scattered, but also facilitate automatic lifting. However, this loading met...

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Problems solved by technology

[0003] However, in actual use, there are still the following problems in the fixed-weight loading equipment of the quantitative bucket type skip: First, during the coal loading process of the quantitative bucket, the coal flow has a certain impact on the quantitative bucket. Due to the long-term frequent impact, the quantitative The service life of the bucket; the instantaneous force formed by the impact will also be transmitted to the weighing sensor, and irregular interference signals will be introduced into the weighing signal, which will seriously affect the accuracy of the weighing system; , if the conveyor is shut down when the actual measurement value of the sensor reaches the approved value, there will still be coal loaded into the quantitative bucket during the shutdown process of the conveyor, resulting in inaccurate weighing. Turn off the conveyor ahead of the approved value, so that the actual loading capacity is close to the approved value. The advance amount is obtained through many tests on site, but due to factors such as the instability of the conveyor operation and the unevenness of the coal on the belt, etc. The actual loading accuracy is not high; the third is that the load cell will have zero drift during use, especially in the harsh underground environment, after the load cell has been used for a period of time, the weighing error is too large, which cannot meet the fixed-weight loading In actual use, the load cell needs to be replaced every six months, which is not economical

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