Underground concrete mixer for coal mine
The technology of a concrete mixer and mixing mechanism is used in the direction of cement mixing device, clay preparation device, and hybrid operation control. Stable, space-saving, and easy to carry and move
Inactive Publication Date: 2013-12-04
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology
However, at present, the dry concrete spraying method is mostly used in the concrete spraying of coal mine roadways. Compared with the wet spraying method, the main problems of the dry spraying method are: high rebound rate, serious pollution, low quality ratio of reinforced concrete, etc. shortcoming
However, the shotcrete site of roadway excavation in underground coal mines is generally hundreds of meters or even more than a thousand meters deep from the ground, and there is no special mixer truck suitable for various mines. very uneconomical
Therefore, the more economical and practical method is to mix concrete on site. Currently, concrete mixers that can be used for on-site mixing include reverse discharge mixers and horizontal shaft forced mixers. A common disadvantage of these mixers is that they are designed according to ground construction. It is huge and cannot adapt to the construction work in the narrow space of the coal mine underground roadway
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[0037] The present invention is described in detail below in conjunction with accompanying drawing:
[0038] combine Figure 1 to Figure 8 , Coal mine underground concrete mixer, including frame 2, feeding mechanism 1 and mixing mechanism 3, feeding mechanism 1 is located at the front end of frame 2, and mixing mechanism 3 is located on frame 2.
[0039] The feeding mechanism 1 comprises a support 11, a hopper 12, a hydraulic cylinder 13, a first sprocket shaft 14, and a second sprocket shaft 15. The support 11 consists of a bottom beam 111, two H-shaped steels 112 erected above the bottom beam 111 and The upper beam 113 constitutes.
[0040] The front end of the piston rod of the hydraulic cylinder 13 is connected to the bottom beam 111, the front end of the cylinder barrel of the hydraulic cylinder 13 is connected to the first sprocket shaft 14, the rear end of the cylinder barrel of the hydraulic cylinder 13 is connected to the second sprocket shaft 15, and the first sproc...
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The invention provides a concrete mixer which is compact in structure and applicable to an underground tunnel of a coal mine. The concrete mixer mainly comprises a rack, a feed mechanism and a mixing mechanism, wherein the feed mechanism is arranged at the front end of the rack, and the mixing mechanism is arranged on the rack. The mixing mechanism can utilize a concrete raw material feeding funnel with fixed proportion to ensure the proportion of concrete and utilizes an adjustable quantitative water supply part to ensure the water-cement ratio of the concrete, a hydraulic cylinder drives a chain wheel to be lifted to feed, and after a hydraulic motor drives the mixer to mix, the hydraulic cylinder pushes the funnel to turn to pour the mixed concrete into a hopper of an underground concrete wet-spray machine. On the premise of not reducing the mixing capacity of the concrete mixer, movement pieces of the concrete mixer occupy the smallest space, so that the concrete mixer is suitable for tunnel work.
Description
technical field [0001] The invention relates to the technical field of coal mine underground construction, in particular to a compact concrete mixer. Background technique [0002] Concrete shotcrete support is widely used in the construction process of rock soil, tunnel and coal mine. It can not only strengthen and stabilize the roadway, but also play a good role in roadway sealing to prevent gas and water penetration. However, at present, the dry concrete spraying method is mostly used in the concrete spraying of coal mine roadways. Compared with the wet spraying method, the main problems of the dry spraying method are: high rebound rate, serious pollution, low quality ratio of reinforced concrete, etc. shortcoming. For this reason, the State Administration of Work Safety has listed dry spraying machines as eliminated products. [0003] At present, in concrete spraying constructions such as railways and highway tunnels, the concrete used for spraying is all commercial con...
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IPC IPC(8): B28C5/24B28C7/04B28C7/02
Inventor冯开林高波程卫民刘淑梅郑娟娟刘彬李强王华超
OwnerSHANDONG UNIV OF SCI & TECH