Electrically-driven self-propelled spraying and dust-settling water curtain device

Abstract

The utility model discloses an electrically-driven self-propelled spraying dust-settling water curtain device, which comprises a supporting mechanism, a spraying mechanism and a walking driving mechanism arranged at the bottom of the supporting mechanism, the supporting mechanism comprises two rows of arched frameworks arranged in parallel, and a top beam and a main beam are respectively welded and fixed between the tops and the bottoms of the two rows of arched frameworks; the spraying mechanism comprises a first curtain pipe, a second curtain pipe and a communicating pipe connecting the first curtain pipe and the second curtain pipe, the first curtain pipe and the second curtain pipe are arranged on the two rows of arched frameworks respectively, a water source is connected to the communicating pipe, a plurality of atomizing nozzles are installed on the first curtain pipe and the second curtain pipe at intervals in the axis direction, and the spraying directions of the atomizing nozzles are arranged in a positive and negative alternating mode. The device disclosed by the utility model can effectively reduce the dust concentration after blasting in the tunnel, shorten the ventilation and smoke dissipation time, improve the construction efficiency, improve the working environment of constructors and reduce the occupational health risk.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of building construction technology, concretely relates to a kind of electric drive self-propelled spray dust-settling water curtain device. BACKGROUND

[0002] With the continuous development of hydropower engineering in China, deep and long tunnels are increasingly widely used in the design of hydropower stations. The construction length of such tunnels is often several kilometers or even longer, and the scale and complexity of the project have significantly increased. At the same time, the regulations and standards for environmental protection are becoming increasingly stringent, and the awareness of occupational health and safety protection among construction personnel is also increasing, making all parties demand higher environmental quality for tunnel blasting excavation.

[0003] In traditional construction technology, after the blasting excavation of the tunnel face is completed, the tunnel is ventilated and the smoke is dispersed. However, this method has obvious defects: a large amount of dust generated by blasting quickly spreads throughout the tunnel space. Due to the wide distribution and high concentration of dust, it is difficult to effectively reduce the dust concentration in a short time relying solely on ventilation equipment. This not only seriously affects the construction progress, but also exposes construction personnel to a high-dust environment for a long time, posing a risk of pneumoconiosis and other occupational health risks. SUMMARY

[0004] The utility model provides a kind of electric drive self-propelled spray dust-settling water curtain device to solve the above technical problems, can be flexibly moved and close to blasting face, and through the atomizing nozzle evenly arranged on the first curtain pipe and the second curtain pipe, and each nozzle is arranged alternately along the axial direction of the pipeline, can form all-round water curtain coverage, to reduce the difficulty of ventilation and smoke dispersion, and speed up the ventilation and smoke dispersion.

[0005] An electric drive self-propelled spray dust-settling water curtain device includes a support mechanism, a spraying mechanism, and a walking driving mechanism arranged at the bottom of the support mechanism. The support mechanism includes two rows of parallel arranged arch skeletons, and top beams and main beams are respectively welded and fixed between the top and bottom of the two rows of arch skeletons. The spraying mechanism includes a first curtain pipe, a second curtain pipe, and a communication pipe connecting the two, which are respectively arranged on the two rows of arch skeletons. The communication pipe is connected to a water source, and a plurality of atomizing nozzles are installed on the first curtain pipe and the second curtain pipe along their axial direction. The spray direction of the plurality of atomizing nozzles is arranged alternately in positive and negative directions.

[0006] A further technical solution is that the atomizing nozzles are installed perpendicular to the surfaces of the first and second curtain pipes, the positive direction of the spray direction is towards the side of the tunnel wall, and the negative direction of the spray direction is away from the side of the tunnel wall.

[0007] Further technical solutions are: the shape of the arch skeleton is matched with the shape of the tunnel cross section, including a top arch section and linear sections arranged on both sides of the top arch section, reinforcing inclined rods are arranged between the middle of the top arch section and the linear sections on both sides thereof, and the first and second curtain pipes are fixed along the contour shape of the arch skeleton.

[0008] Further technical solutions are: the top arch section and the linear sections of the arch skeleton are made of I-shaped steel, connecting steel plates are welded and fixed on opposite sides of the top arch section and the linear sections, and the two connecting steel plates are fastened and connected through M24 bolts.

[0009] Further technical solutions are: a plurality of groups of longitudinal connecting rods and scissors braces are welded and fixed on opposite sides of the two rows of arch skeletons.

[0010] Further technical solutions are: a water diversion pipe is connected to the middle of the communication pipe, the other end of the water diversion pipe is connected to a water source through a booster pump, the two ends of the communication pipe are connected to the first curtain pipe and the second curtain pipe respectively, and the pipe openings at the two ends of the first curtain pipe and the second curtain pipe are closed.

[0011] Further technical solutions are: the communication pipe is fixedly installed on the top beam.

[0012] Further technical solutions are: two tracks are laid in the tunnel along the direction of excavation thereof, the walking driving mechanism comprises walking wheels arranged at the four corners of the bottom of the supporting mechanism, the walking wheels are in sliding fit with the tracks, and a driving motor is connected to the walking wheel on one side.

[0013] The beneficial effects of the utility model are:

[0014] The device can effectively reduce the dust concentration after blasting in the tunnel, shorten the ventilation and smoke dispersion time, improve the construction efficiency, improve the working environment of the construction personnel, and reduce the occupational health risk. By arranging two rows of arch skeletons with shapes matched with the shape of the tunnel cross section, and arranging the first curtain pipe and the second curtain pipe on the two rows of arch skeletons respectively, the water mist sprayed by the device can maximize the coverage of the tunnel cross section, forming a complete multi-channel water curtain barrier; the atomizing nozzles are uniformly arranged on the first curtain pipe and the second curtain pipe, and the atomizing nozzles are arranged alternately, which can form a full-range water curtain coverage, effectively capturing and settling dust particles in the air.

[0015] The two rows of arch skeletons are connected through longitudinal connecting rods and scissors braces, which enhances the stability of the overall structure; the reinforcing inclined rods arranged between the top arch section and the linear sections of the arch skeleton further improve the carrying capacity and anti-deformation capacity of the device. At the same time, the driving mechanism of the device enables it to move flexibly along the direction of tunnel blasting and excavation, and follow the blasting working face at any time, so as to control the dust diffusion area within the tunnel body about 30m away from the working face, improve the timeliness and effectiveness of dust reduction, and significantly improve the tunnel construction environment. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a side view of the device of the utility model;

[0017] Figure 2 is a front view of the device of the utility model;

[0018] Figure 3 is Figure 1 enlarged schematic view of A in the middle;

[0019] Figure 4 is a schematic view of the connection between the top arch section and the straight section;

[0020] Figure 5 is a schematic view of the connecting steel plate.

[0021] In the figure:

[0022] 1, support mechanism, 11, arched framework, 111, top arch section, 112, straight section, 113, reinforcing diagonal, 114, connecting steel plate, 115, bolt hole, 116, bolt, 12, top beam, 13, main beam, 14, longitudinal connecting rod, 15, scissors support, 2, spray mechanism, 21, first curtain pipe, 22, second curtain pipe, 23, communication pipe, 24, atomizing nozzle, 25, booster pump, 26, water pipe, 3, walking driving mechanism, 31, walking wheel, 32, driving motor, 4, water distribution gate valve, 5, construction water supply main pipe, 6, pressure air pipe, 7, ventilation pipe, 8, tunnel, 9, track. DETAILED DESCRIPTION

[0023] The utility model will be further described in detail in combination with the drawings. These drawings are all simplified schematic views, and only the basic structure of the utility model is schematically shown, so it only shows the structure related to the utility model.

[0024] In the description of the utility model, it should be explained that, if the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing the utility model and simplifying the description, and it does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, so it cannot be understood as a limitation on the utility model.

[0025] In the description of the utility model, it is necessary to explain that, unless there are explicit provisions and limitations, such as the term "installation", "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication between two elements.

[0026] An electrically-driven self-propelled spray dust-settling water curtain device, as shown in Figures 1-5 The utility model discloses a kind of electrically-driven self-propelled spray dust-settling water curtain device, as shown in Fig. 1, including support mechanism 1, spray mechanism 2 and setting in support mechanism 1 bottom travel driving mechanism 3, support mechanism 1 includes two rows of parallelly arranged arch skeleton 11, top and bottom between two rows of arch skeleton 11 are respectively welded and fixed with top beam 12 and main beam 13;Spray mechanism 2 includes first curtain pipe 21, second curtain pipe 22 and the communication pipe 23 connected with each other respectively arranged on two rows of arch skeleton 11, water source is accessed on communication pipe 23, and a plurality of atomizing nozzles 24 are installed on first curtain pipe 21 and second curtain pipe 22 along its axial direction interval, and the injection direction of atomizing nozzle 24 is arranged alternately in positive and negative direction.

[0027] Atomizing nozzle 24 is installed perpendicularly to the surface of first curtain pipe 21 and second curtain pipe 22, wherein the positive direction of injection direction is the direction towards the side of tunnel 8 wall, and the negative direction of injection direction is the direction away from the side of tunnel 8 wall, so that water mist can be uniformly sprayed in each area inside tunnel 8.

[0028] By setting two first curtain pipes 21 and second curtain pipes 22 spaced apart by a certain distance, and atomizing nozzles 24 arranged alternately in positive and negative direction on first curtain pipe 21 and second curtain pipe 22, it can spray water mist in different directions, form multi-directional water curtain coverage, effectively capture and settle dust particles in the air.

[0029] The shape of arch skeleton 11 is matched with the cross-sectional shape of tunnel 8, including top arch section 111 and straight section 112 arranged on both sides of top arch section 111, reinforcing diagonal rod 113 is arranged between the middle of top arch section 111 and the straight section 112 on both sides thereof, and first curtain pipe 22 and second curtain pipe 22 are fixed along the contour shape of arch skeleton 11. The shape contour of first curtain pipe 22 and second curtain pipe 22 is matched with the cross-sectional shape of tunnel 8, so that the sprayed water mist can maximize the coverage of tunnel 8 cross section, forming a complete water curtain barrier.

[0030] As Figure 4 And Figure 5As shown, the top arch section 111 and the straight section 112 of the arch skeleton 11 are made of I-beams, and the opposite sides of the top arch section 111 and the straight section 112 are welded and fixed with connecting steel plates 114, the connecting steel plates 114 are symmetrically provided with a plurality of bolt holes 115, and the two connecting steel plates 114 are fastened and connected through M24 bolts 116.

[0031] The opposite sides of the two rows of arch skeletons 11 are welded and fixed with a plurality of groups of longitudinal connecting rods 14 and scissor braces 15. The longitudinal connecting rods 14 and the scissor braces 15 increase the stability and strength of the connection of the two arch skeletons 11.

[0032] The middle part of the communication pipe 23 is connected with a water guide pipe 26 through a tee joint, the other end of the water guide pipe 26 is connected to a water source through a booster pump 25, the two ends of the communication pipe 23 are connected to the first curtain pipe 21 and the second curtain pipe 22 through tee joints respectively, and the pipe openings at the two ends of the first curtain pipe 21 and the second curtain pipe 22 are closed. Specifically, the water source can be led out from the construction water supply main pipe 5 on the side wall of the tunnel 8, the water distribution gate valve 4 on the construction water supply main pipe 5 is connected with the booster pump 25 through a water inlet pipe, and the booster pump 25 increases the water spraying pressure, and then the water is supplied to the first curtain pipe 21 and the second curtain pipe 22 through the communication pipe 23, the atomizing nozzles 24 spray water mist to form a water curtain. With the movement of the support mechanism, the length of the water guide pipe can be increased by installing joints and hoses according to the moving distance.

[0033] Preferably, the communication pipe 23 is fixedly installed on the roof beam 12, so that the water supply is more smooth.

[0034] Two tracks 9 are laid along the excavation direction of the tunnel 8, and the walking driving mechanism 3 includes walking wheels 31 arranged at the four corners of the bottom of the support mechanism 1, the walking wheels 31 are in sliding fit with the tracks 9, and the walking wheels 31 on one side are connected with a driving motor 32. The driving motor 32 drives the walking wheels 31 to rotate, and drives the support mechanism 1 to slide along the tracks 9.

[0035] The use method of the device is as follows: before blasting, the walking driving mechanism 3 drives the support mechanism 1 to follow and move to the working face, the booster pump 25 is started to spray water mist through the atomizing nozzles 24 on the first curtain pipe 21 and the second curtain pipe 22, a plurality of dust-settling water curtains are formed to intercept the blasting dust, the dust is prevented from diffusing and polluting the whole tunnel environment, the dust diffusion area is controlled within the tunnel body within a range of about 30m from the working face, and then the pressure air pipe 6 and the ventilation pipe 7 are used for ventilation, so that the difficulty of ventilation and smoke dissipation is reduced, the ventilation and smoke dissipation speed is accelerated, and the air environment in the tunnel is improved.

[0036] With the above ideal embodiment of the present application as the inspiration, through the above description, relevant staff can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content of the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. An electrically driven self-propelled spray dust-settling water curtain device, characterized in that, The support mechanism comprises two rows of parallel arranged arch skeletons, top beams and main beams are respectively welded and fixed between the top and bottom of the two rows of arch skeletons; the spray mechanism comprises a first curtain pipe, a second curtain pipe and a connecting pipe connecting the two, the connecting pipe is connected to a water source, a plurality of atomizing nozzles are installed on the first curtain pipe and the second curtain pipe along the axial direction, and the spray directions of the plurality of atomizing nozzles are arranged in positive and reverse directions alternately.

2. The electrically driven self-propelled spraying dust-settling water curtain device according to claim 1, characterized in that, The atomizing nozzles are installed vertically to the surfaces of the first and second curtain pipes, the positive direction of the spray direction is the direction towards the side of the tunnel wall, and the reverse direction of the spray direction is the direction away from the side of the tunnel wall.

3. The electrically driven self-propelled spraying dust-settling water curtain device according to claim 1, characterized in that, The shape of the arch skeleton is matched with the shape of the tunnel section, and the arch skeleton comprises a top arch section and linear sections arranged on both sides of the top arch section, reinforcing diagonal rods are arranged between the middle of the top arch section and the linear sections on both sides, and the first and second curtain pipes are installed and fixed along the contour shape of the arch skeleton.

4. The electrically driven self-propelled spraying dust-settling water curtain device according to claim 3, characterized in that, The top arch section and the linear sections of the arch skeleton are made of I-shaped steel, connecting steel plates are welded and fixed on the opposite sides of the top arch section and the linear sections, and the two connecting steel plates are fastened and connected by M24 bolts.

5. The electrically driven self-propelled spraying dust-settling water curtain device according to claim 1, characterized in that, A plurality of longitudinal connecting rods and scissors supports are welded and fixed on the opposite sides of the two rows of arch skeletons.

6. The electrically driven self-propelled spraying dust-settling water curtain device according to claim 1, characterized in that, A water diversion pipe is connected to the middle of the connecting pipe, the other end of the water diversion pipe is connected to the water source through a booster pump, the two ends of the connecting pipe are connected to the first curtain pipe and the second curtain pipe respectively, and the pipe openings at the two ends of the first curtain pipe and the second curtain pipe are closed.

7. The electrically driven self-propelled spraying dust-settling water curtain device according to claim 1, characterized in that, The connecting pipe is fixedly installed on the top beam.

8. The electrically driven self-propelled spraying dust-settling water curtain device according to claim 1, characterized in that, Two tracks are laid along the excavation direction in the tunnel, the walking driving mechanism comprises walking wheels arranged at the four corners of the support mechanism, the walking wheels are in sliding fit with the tracks, and a driving motor is connected to the walking wheel on one side.

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