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A spray head assembly of a concrete spraying vehicle and a concrete spraying vehicle

A shotcrete truck and concrete technology, used in earth-moving drilling, construction material processing, wellbore lining, etc. problems, to reduce impact and friction, increase bending radius, and prolong service life

Active Publication Date: 2018-01-12
HUNAN WUXIN TUNNEL INTELLIGENT EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the nozzle assembly of concrete spraying trucks on the market adopts the scheme of directly connecting the pumping hose with the connecting pipe of the spraying device. This scheme has the following disadvantages: 1. The flange of the pumping hose is easy to break 2. The pumping hose is prone to friction with the buffer spring, which will damage the outer rubber of the pumping hose; 3. The bending angle of the pumping hose is large. When pumping, the concrete will affect the pumping hose The impact and friction force are large, and it is easy to wear the inner wall of the hose; 4. The increased twist of the pumping hose also increases the stress on the nozzle assembly, thereby shortening the service life of the pumping hose and the nozzle assembly

Method used

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  • A spray head assembly of a concrete spraying vehicle and a concrete spraying vehicle
  • A spray head assembly of a concrete spraying vehicle and a concrete spraying vehicle
  • A spray head assembly of a concrete spraying vehicle and a concrete spraying vehicle

Examples

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Effect test

Embodiment 1

[0031] Such as figure 1 As shown, the nozzle assembly of the concrete spraying vehicle provided by the present invention includes a spraying device 2 connected to the pumping hose 1 and a driving device 3 for driving the spraying device 2, and the spraying device 2 includes A connecting pipe 24 , a mixer 25 and a nozzle 26 , the side wall of the connecting pipe 24 is connected to the driving device 3 . One end of the connecting pipe 24, the mixer 25 and the nozzle 26 are sequentially connected, and the other end of the connecting pipe 24 is rotatably connected with one end of the elbow 27, and the other end of the elbow 27 The pumping hose 1 is rotatably connected.

[0032] The concrete spraying truck sends the concrete from the hopper into the pumping pipeline. Under the pressure of the pump, the concrete is transported along the pumping pipeline to the pumping hose 1 at the end of the pumping pipeline, and finally enters the injection device 2. , the concrete passes throug...

Embodiment 2

[0061] After the concrete shotcrete truck is used, the pumping pipeline must be cleaned quickly. In order to clean the pumping pipeline more conveniently, this embodiment makes the following improvements on the basis of the first embodiment:

[0062] Such as Figure 4 As shown, in this embodiment, a stop valve 216 is added to the spray head assembly of the concrete spraying vehicle described in the first embodiment, and a spray head assembly with a stop valve 216 is provided.

[0063] The injection device 2 in the first embodiment further includes a cut-off valve 216, and the two ends of the cut-off valve 216 are sealed and fixedly connected with the mixer 25 and the nozzle 26 respectively. Specifically, the shut-off valve 216 includes a shut-off valve housing 217, a sealing ring 218, a shut-off valve spool 219 and a rotary switch 220 arranged outside the shut-off valve housing 217, and the shut-off valve spool 219 is arranged on the The spherical structure inside the shut-of...

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Abstract

The invention provides a nozzle assembly of a concrete spraying vehicle and a concrete spraying vehicle. The nozzle assembly of the concrete spraying vehicle includes a spraying device connected with a pumping hose and a driving device for driving the spraying device. The injection device includes a connecting pipe, a mixer and a nozzle, the side wall of the connecting pipe is connected to the driving device, one end of the connecting pipe, the mixer and the nozzle are connected in sequence, and the other end of the connecting pipe is also An elbow is provided, and the two ends of the elbow are respectively connected to the connecting pipe and the pumping hose through pipe clips. The concrete shotcrete vehicle includes the aforementioned spray head assembly. Compared with the prior art, both the elbow and the pumping hose in the present invention can rotate flexibly along with the action of the spray head assembly. The bending radius of the pumping hose during operation is increased, which effectively reduces the impact and friction of the concrete on the pumping hose, thereby effectively prolonging the service life of the sprinkler assembly and the pumping hose.

Description

technical field [0001] The invention belongs to the field of engineering machinery, and in particular relates to a nozzle assembly for a concrete spraying vehicle and a concrete spraying vehicle. Background technique [0002] Concrete shotcrete truck is widely used in tunnels or other projects as support equipment needed at the initial stage of the project. When working, the concrete in the shotcrete truck is transported to the injection device through the pumping pipeline, and then the quick-setting is accelerated by high-pressure air. The quick-setting agent is transported to the injection device and fully mixed with the concrete, and then sprayed out at a high speed, the concrete containing the quick-setting agent is quickly set to form a support layer. At present, the nozzle assembly of the concrete spraying vehicle on the market adopts the scheme of directly connecting the pumping hose with the connecting pipe of the spraying device. This scheme has the following disadv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/10E04G21/02E02D15/02
Inventor 王祥军龚俊何良军管付如
Owner HUNAN WUXIN TUNNEL INTELLIGENT EQUIP CO LTD
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