Large-span bulk material conveying system

Abstract

The invention discloses a large-span bulk material conveying system which comprises a folding arm conveyor and a cross-bank lifting type feeding conveying device. The folding arm conveyor is mainly composed of a bottom frame arranged on the ground of a stockyard, a tower body arranged on the bottom frame, a balance arm, a conveying arm, a tower top and other main parts, wherein the balance arm, the conveying arm and the tower top are arranged on the tower body. A portal frame I, a portal frame II and a discharging trolley are arranged on the conveying arm, a rotating device and a hopper are arranged on the tower body, and a balancing trolley is arranged on the balancing arm. The folding arm conveyor can realize horizontal rotation, a steel wire rope can be controlled by a winch to fold andretract the conveying arm, collision with other equipment or buildings in the rotation process can be prevented, and the risk of toppling of the conveyor under the action of wind force can be effectively reduced. The large-span bulk material conveying system has the characteristics of simple structure, low cost, ground space saving, automatic control and the like.

Description

technical field [0001] The invention relates to a large-span bulk material conveying system, which belongs to the field of conveyors. Background technique [0002] At present, with the rapid development of economy and society, the demand for sand and gravel is also increasing. How to carry out all-round transportation and stacking of sand and gravel is an urgent problem to be solved. In the prior art, a sand carrier is used to transport the sand to the embankment by means of the sand carrier, and transport the sand and gravel to the stockyard through the transportation equipment beside the embankment for stockpiling. In large stockyards, belt conveyors are the preferred conveying equipment. Conveyors can only transport sand and gravel to places along the conveyor belt, so the current large stockyards still have problems such as insufficient site utilization and low conveyor efficiency. The traditional solution is to use other equipment to re-transport the sand and gravel, ...

AI Technical Summary

Problems solved by technology

[0004] 1. In the prior art, there is a folding delivery arm, which can realize long-distance transportation and can be stored. However, this kind of folding arm is generally folded in two sections, and the folding in three sections is basically assisted by various equipment such as hydraulic cylinders. However, only The hydraulic cylinder cannot be fully deployed yet, and an auxiliary structure must be used to

[0005] 2. The conveyor in the prior art has a single form of counterweight and cannot realize multi-stage variable counterweight

Especially for large equipment, it is more difficult to achieve multi-level variable counterweight

[0006] 3. The stroke control in the prior art is often just a limiter such as bumps, anti-collision blocks, etc. However, this limiter has a single structure and cannot realize dynamic stroke control

Especially in the conveyor, since the folded and unfolded state of the folding arm is the movement of large equipment, its dynamic stroke control is particularly important, and the existing technology does not solve this problem

[0007] 4. After the conveyor belt and hopper of the prior art are conveyed, there will be some residues. At this time, it is not suitable to start the whole system again. There is no flexible solution in the prior art

[0008] 5. The prior art lacks a stable connection relationship between the upstream conveyor and the downstream conveyor, and lacks a functional connection relationship, which wastes resources and efficiency

[0010] 7. The hopper of the prior art usually adopts a large-area bracket, that is, the bracket is often a whole panel, so that the bracket has sufficient strength to support the valve plate below the hopper; occasionally there is a leg-type bracket to fix the valve plate on the leg , but the valve plate area is very large, which increases a lot of weight and range of motion

[0011] 8. Between the overlapping guide rails of the prior art, the problem of the force on the lower guide rail is a big problem, especially in the cross-bank lifting feeding conveying equipment, the first telescopic conveyor is located on the second telescopic conveyor, and the second telescopic conveyor The force problem of the conveyor has always been troubled. Generally, for the sake of insurance, a larger volume and a solid design are adopted.

[0012] 9. The cable-stayed moving devices in the prior art, such as the lifting and feeding trolley in the cross-dyke lifting feeding conveying equipment, are often solid in structure and have relatively large consumables

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