River-crossing dust falling device

Abstract

The utility model relates to a river-crossing dust fall device which comprises concrete anchorage piers arranged along the two banks of a river, the height difference of the concrete anchorage piers on the two banks ranges from 0.5 m to 1 m, two river-crossing bearing steel cables are connected between the two concrete anchorage piers, and a miniature tackle is installed on the two bearing steel cables through two sets of pulleys arranged on the miniature tackle. A water spraying pipe and a spraying square pipe are hoisted at the lower part of the micro pulley; the spraying square pipe and the water spraying pipe are hoisted through the micro tackle to form a water curtain for dust falling, the coverage area is large, the overall manufacturing cost is controllable, the operation cost is low, small-scale artificial rainfall is formed through water outlet simulation of the water spraying holes, and the water curtain is complemented and reinforced with a water curtain formed by the solid conical nozzle at the same time; dust on a large working face in hydropower station dam foundation excavation and blasting construction can be covered, and therefore the ideal dust falling effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of construction dust removal and reduction, in particular to the technical field of dust reduction during excavation of a dam foundation of a hydropower station, in particular to a cross-river dust reduction device. Background Art

[0002] At present, my country's ecological civilization construction is in the development stage. With the continuous advancement of engineering construction and the improvement of people's awareness of environmental protection, the problem of dust and fugitive dust in the construction process has gradually attracted widespread attention. Dust and fugitive dust not only pollute the surrounding environment, but also harm the health of workers. In the excavation and blasting construction of the dam foundation of the hydropower station, the construction dust and fugitive dust are very large, but the construction work surface is located on the steep river bank and the work surface is wide. Ordinary water curtain dust reduction devices are difficult to deploy and use, and cannot achieve the ideal dust reduction effect. Utility Model Content

[0003] The purpose of the present invention is to provide a cross-river dust suppression device in view of the deficiencies in the prior art.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cross-river dust suppression device, comprising concrete anchor piers arranged on both sides of the river, the concrete anchor piers on both sides are arranged with a height difference of 0.5 to 1 m, two load-bearing steel cables across the river are connected between the two concrete anchor piers, and also comprising a micro pulley, a water spray pipe and a spray square tube, the micro pulley is provided with two sets of pulleys installed on the two load-bearing steel cables, a circular pipe rack and a square pipe rack are provided at the lower part of the micro pulley, and the water spray pipe and the spray square tube are respectively installed under the micro pulley, a solid conical nozzle that can form a spray is installed at the bottom of the spray square tube, and the water spray pipe is provided with a water spray hole; a plurality of micro pulleys are evenly arranged on the load-bearing steel rope across the river.

[0005] The concrete anchor piers on both sides are set with a height difference of 0.5 to 1 m. The gravity potential energy generated by the height difference can reduce the difficulty of subsequent micro-pulley installation construction. At the same time, the height difference can generate a certain water pressure, which can reduce the water supply pressure of the sprinkler pipe.

[0006] Furthermore, a traction positioning rope is connected between the micro pulleys. The traction positioning rope used for traction across the river and spacing positioning is fixed to the micro pulley with a steel rope clamp. The ends of the traction positioning rope can be fixed on the concrete anchor piers on both sides.

[0007] Furthermore, the micro-pulley is provided with two groups of pulleys, each group of which is two pulleys arranged longitudinally, which can reduce the shaking of the micro-pulley and increase the lateral stability of the device.

[0008] Furthermore, the arrangement spacing of the micro pulleys is no more than 3m, which maintains the density of the installation and fixing points of the spray square pipes and the water spray pipes, reduces the pipe deflection caused by gravity, and increases stability.

[0009] Furthermore, the solid conical nozzles at the bottom of the square spray tube are installed at equal intervals, with an arrangement spacing of no more than 3m, so as to maintain a proper overlapping density of the water curtain sprayed by the solid conical nozzles.

[0010] Furthermore, the water spray holes opened in the upper half of the circular water spray pipe are arranged in a Z-shape and are equidistantly and staggered, with an arrangement spacing of no more than 0.3m. The diameter of the water spray holes is 2mm. The water spray holes can simulate the formation of artificial rainfall to complement and strengthen the water curtain, covering the dust on the working surface, thereby achieving the best spray dust reduction effect.

[0011] Furthermore, the bottom of the square spray pipe is connected to a solid conical nozzle via a threaded joint.

[0012] Furthermore, the spray square pipe and the water spray pipe are made of PE material or PB material, which has light weight and reduces the load on the steel cable. At the same time, they have very high strength and good creep resistance.

[0013] Furthermore, the spray square tube and the water spray pipe are respectively connected to separate pressurized water supply pipes, and the pressurized water supply pipes are arranged at one end of a higher concrete anchor pier. The water pressure can be adjusted according to the size of the working surface and the height of the load-bearing steel rope, and the spray water volume of the solid conical nozzle and the spray water volume of the water spray hole can be adjusted. The density and coverage of on-site water spraying and spraying can be adjusted to achieve the best spray dust reduction effect.

[0014] The beneficial effects of the utility model are as follows: concrete anchor piers with a height difference of 0.5 to 1 m are arranged on both sides of the river to connect two load-bearing steel ropes across the river; the square spray pipes and the water spray pipes are hoisted by a micro-pulley to simultaneously form a water curtain and simulate rainfall that is evenly dispersed from top to bottom, and the dust reduction coverage area is large; the overall cost is controllable and the operating cost is low; the water outlet of the water spray hole simulates the formation of small-scale artificial rainfall, and complements and strengthens the water curtain formed at the same time by the solid conical nozzle, which can cover the dust on a larger working surface during the excavation of the dam foundation of the hydropower station and the blasting construction, thereby achieving an ideal dust reduction effect.

[0015] The spray square tube of this device adopts a square tube, and the solid conical nozzle at the bottom is always facing directly downward. The circular tube itself is prone to twisting, which causes the nozzle direction to tilt and deflect, so that the direction of the water curtain it sprays is not facing directly downward, which will greatly affect the dust reduction effect of the water curtain.

[0016] The concrete anchor piers on both sides are provided with a height difference of 0.5 to 1 m. The gravity potential energy generated by the height difference can reduce the difficulty of subsequent micro-pulley installation construction. At the same time, the height difference can reduce the water supply pressure of the sprinkler pipe to a certain extent.

[0017] The spray square pipe and the water spray pipe are respectively connected to separate pressurized water supply pipelines, and the water pressure can be adjusted separately according to the size of the working surface, the construction intensity and the height of the bearing steel rope. The density and coverage of the water spray and spray can be adjusted on site to achieve the best spray dust reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the front view of the utility model;

[0019] Figure 2 for Figure 1 AA section view in the figure;

[0020] Figure 3 This is a schematic diagram of the concrete anchor pier structure;

[0021] Figure 4 It is a schematic diagram of the structure of the top of the water spray pipe;

[0022] Figure 5 Schematic diagram of the spray pipe structure.

[0023] Reference numerals in the figures:

[0024] 1-concrete anchor pier; 2-load-bearing steel cable; 3-mini pulley; 4-spray pipe; 5-spray square pipe; 21-traction positioning rope; 30-pulley; 31-round pipe rack; 32-square pipe rack; 41-spray hole; 51-solid conical nozzle. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0026] like Figures 1 to 5 As shown, a cross-river dust suppression device includes concrete anchor piers 1 arranged on both sides of the river, the concrete anchor piers 1 on both sides are set with a height difference of 0.5 to 1m, two load-bearing steel cables 2 across the river are connected between the two concrete anchor piers 1, and also includes a micro pulley 3, a water spray pipe 4 and a spray square tube 5. The micro pulley 3 is provided with two sets of pulleys 30 installed on the two load-bearing steel cables 2, and a circular pipe rack 31 and a square pipe rack 32 are provided at the lower part of the micro pulley 3 to respectively install the water spray pipe 4 and the spray square tube 5 under the micro pulley 3, a solid conical nozzle 51 capable of forming a spray is installed at the bottom of the spray square tube 5, and the water spray pipe 4 is provided with a water spray hole 41; a plurality of micro pulleys 3 are evenly arranged on the load-bearing steel rope 2 across the river.

[0027] The concrete anchor piers 1 on both sides are provided with a height difference of 0.5 to 1 m. The gravity potential energy of the height difference can reduce the difficulty of subsequent installation of the micro-pulley 3 , and the water supply pressure of the water spray pipe 4 can be reduced to a certain extent by utilizing the height difference.

[0028] A traction positioning rope 21 is connected between the micro pulleys 3. The traction positioning rope 21 used for traction across the river and spacing positioning is fixed to the micro pulley 3 with a steel rope clamp. The ends of the traction positioning rope 21 can be fixed on the concrete anchor piers 1 on both sides.

[0029] The micro-pulley 3 is provided with two groups of pulleys 30, each group of which is two pulleys arranged longitudinally, which can reduce the shaking of the micro-pulley 3 and increase the lateral stability of the device.

[0030] The arrangement spacing of the micro pulleys 3 is not greater than 3m, which maintains and increases the fixed density of the spray square pipes 5 and the water spray pipes 4, reduces the pipe deflection caused by gravity, and increases stability.

[0031] The solid conical nozzles 51 at the bottom of the spray square tube 5 are installed at equal intervals, with an arrangement spacing of no more than 3m, so as to maintain a proper overlapping density of the water curtain sprayed by the solid conical nozzles 51.

[0032] The water spray holes 41 opened on the upper half of the circular water spray pipe 4 are arranged in a Z-shaped staggered and equidistant manner, with an arrangement spacing of no more than 0.3m, and the diameter of the water spray holes 41 is 2mm. The water spray holes 41 can simulate the artificial rainfall formed to complement and strengthen the water curtain, cover the dust on the working surface, and thus achieve the best spray dust reduction effect.

[0033] The bottom of the spray square pipe 5 is connected to a solid conical nozzle 51 via a threaded joint.

[0034] The spray square pipe 5 and the water spray pipe 4 are made of PE material or PB material, which is light in weight and reduces the load on the steel cable. At the same time, they have very high strength and good creep resistance.

[0035] The spray square tube 5 and the water spray pipe 4 are respectively connected to separate pressurized water supply pipes, which are arranged at one end of the higher concrete anchor pier 1. The water pressure can be adjusted according to the size of the working surface and the height of the load-bearing steel rope 2, and the spray water volume of the solid conical nozzle 51 and the spray water volume of the water spray hole 41 can be adjusted. The density and coverage of the water spray and spraying can be adjusted on site to achieve the best spray dust reduction effect.

[0036] Implementation process: Concrete anchor piers 1 are set on both sides of the river surface above the dam foundation excavation operation area. According to the site elevation, the left and right bank concrete anchor piers 1 form a height difference of 0.5 to 1 m. Two load-bearing steel cables 2 across the river are connected between the two concrete anchor piers 1. The micro pulley 3 is installed on the two load-bearing steel cables 2 through two sets of pulleys 30. The circular pipe rack 31 and the square pipe rack 32 at the lower part of the micro pulley 3 respectively install the water spray pipe 4 and the spray square pipe 5 under the micro pulley 3. A traction positioning rope 21 is connected between the micro pulleys 3. A 40 kg weight is hung on the end of the traction positioning rope 21 to pull the micro pulley 3 from the side of the higher concrete anchor pier 1 to move across the river, and the spacing between the micro pulleys 3 is fixed by a steel rope clamp. After completing the crossing of the river and evenly arranging the positioning, the two ends of the traction positioning rope 21 are fixed on the concrete anchor piers 1 on both sides.

[0037] The spray square pipe 5 and the water spray pipe 4 are respectively connected to a separate pressurized water supply pipe, which is arranged at one end of the higher concrete anchor pier 1. The water pressure can be adjusted according to the size of the working surface and the height of the load-bearing steel rope 2 to adjust the spray water volume and the spray water volume. The density and coverage of the water spray and the spray can be adjusted on site. The water outlet of the water spray hole 41 simulates the formation of small-scale artificial rainfall, and complements and strengthens the water curtain formed by the solid conical nozzle 51, which is evenly dispersed from top to bottom, covering the dust on a larger working surface during the excavation of the dam foundation and blasting construction of the hydropower station, thereby achieving an ideal dust reduction effect.

Claims

1. A dust suppression device across a river, comprising concrete anchor piers (1) arranged along both sides of a river, wherein the concrete anchor piers (1) on both sides are arranged with a height difference of 0.5 to 1 m, and two load-bearing steel cables (2) across the river are connected between the two concrete anchor piers (1), characterized in that: It also includes a micro-pulley (3), a water spray pipe (4) and a spray square pipe (5), wherein the micro-pulley (3) is provided with two sets of pulleys (30) installed on two load-bearing steel cables (2), a circular pipe rack (31) and a square pipe rack (32) are provided at the lower part of the micro-pulley (3), and the water spray pipe (4) and the spray square pipe (5) are respectively installed under the micro-pulley (3), a solid conical nozzle (51) capable of forming a spray is installed at the bottom of the spray square pipe (5), and a water spray hole (41) is opened on the water spray pipe (4); a plurality of micro-pulleys (3) are evenly arranged on the load-bearing steel cables (2) across the river; A traction positioning rope (21) is connected between the micro-pulleys (3). The traction positioning rope (21) used for traction across the river and spacing positioning is fixed to the micro-pulley (3) with a steel rope clamp. The ends of the traction positioning rope (21) can be fixed on the concrete anchor piers (1) on both sides of the bank. The micro-pulley (3) is provided with two groups of pulleys (30), each group of which consists of two pulleys arranged longitudinally; The arrangement spacing of the micro-pulleys (3) is no greater than 3m; The solid conical nozzles (51) at the bottom of the spray square tube (5) are installed at equal distances, and the arrangement spacing is not greater than 3m; The water spray holes (41) provided on the upper half of the circular water spray pipe (4) are arranged in a zigzag pattern and are staggered and equidistantly arranged, with an arrangement spacing of no more than 0.3 m, and the diameter of the water spray holes (41) is 2 mm; The bottom of the spray square tube (5) is provided with a threaded joint for connecting and installing a solid conical nozzle (51); The spray square tube (5) and the water spray pipe (4) are made of PE material or PB material; The spray square pipe (5) and the water spray pipe (4) are respectively connected to separate pressurized water supply pipelines, and the pressurized water supply pipelines are arranged at one end of a higher concrete anchor pier (1).

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