Hinged wet spraying trolley

Abstract

The invention provides a hinged wet-spraying trolley which comprises a chassis, a spraying arm, a power device and a control device, wherein the chassis comprises a front trolley frame and a rear trolley frame hinged with the front trolley frame; the spraying arm is fixedly mounted on the front trolley frame, and a spraying device is arranged at the tail end of the spraying arm; the power device comprises an engine power unit arranged on the front trolley frame and a motor pump set arranged on the rear trolley frame; the control device is used for controlling the hinged wet-spraying trolley tooperate and comprises an electrical system and a hydraulic system which are arranged on the rear trolley frame; a steering oil cylinder connected with the hydraulic system is arranged between the front trolley frame and the rear trolley frame; the steering oil cylinder is stretched out and drawn back to enable the chassis to steer, the hinged wet-spraying trolley is driven by the engine power unit to walk, and the spraying device provides concrete slurry under the control action of the electrical system and the hydraulic system and conducts spraying construction under the drive action of themotor pump set.

Description

technical field [0001] The invention belongs to the technical field of tunnel wet spraying trolley, and in particular relates to an articulated wet spraying trolley. Background technique [0002] At present, the primary support operation of mine roadways mainly adopts the dry shotcrete process. In the construction process, the process has many disadvantages. For example, the dry spraying process requires a large number of construction personnel, high labor intensity, poor construction environment for workers, high dust concentration, and great harm to the construction personnel. In addition, the spraying quality of the dry spraying process is poor, the concrete compactness is poor, the support strength is low, and the rebound rate of the sprayed concrete is greater than 30%, which is a serious waste of resources. [0003] In order to solve the problems existing in construction, wet shotcrete trolleys suitable for coal mine construction environment have appeared on the mark...

AI Technical Summary

Problems solved by technology

For example, the existing articulated wet shotcrete trolley for coal mines is mainly designed for the coal mine construction environment containing gas gas. The size and weight of the whole machine are large, which cannot meet the needs of small and light wet spray trolleys for mine construction.

In addition, the chassis hinge mechanism of this spray trolley adopts the principle of double oil cylinder steering, and the hinge plate is connected to the rear frame by bolts through the rotary support. The structure is too complicated and the maintenance cost is high.

In addition, when the engine provides stress power, the hydraulic pipeline must be disassembled and reconnected. The operation is cumbersome, and it is easy to connect the pipeline incorrectly, causing equipment failure and affecting construction efficiency.

In addition, the cabs of these spray trolleys are mostly located directly in front of the vehicle, resulting in poor visibility and high risk when reversing in a narrow tunnel

The working medium of the existing articulated wet spraying trolley for coal mines comes from different hydraulic oil tanks for driving and spraying operations. Only the hydraulic oil tank for spraying operation has heat dissipation function, and the hydraulic oil tank for driving has no heat dissipation function, which is not conducive to the length of the spraying trolley. distance travel

In addition, these spray trolleys are not equipped with air compressors and accelerator buckets, so they need to be connected to external air ducts and accelerator buckets on site during work, resulting in long construction time and low construction efficiency.

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