A dust suppression device for construction engineering vehicles

Abstract

The present invention provides a dust suppression device for construction engineering vehicles, which includes an air inlet body, an air pump, an air release body, a barometric pressure sensor and a controller. The air inlet body is fixed in front of the head of the construction engineering vehicle; the air suction port of the air pump is connected to the air flow inlet body through a front ventilation pipe; the air release body is fixed behind the tail of the construction engineering vehicle and is connected to the air outlet of the air pump through a rear ventilation pipe; the barometric pressure sensor is arranged in front of the air inlet body; the controller compares the barometric pressure value in front of the air inlet body detected by the barometric pressure sensor with the standard atmospheric pressure value in real time, and automatically controls the air extraction and exhaust speed of the air pump according to the difference between the two, so that the barometric pressure values before and after the vehicle are always maintained near the standard atmospheric pressure value during the vehicle's travel. During the travel of the construction engineering vehicle, the present invention can suck and dissipate the energy of the air in the high-pressure area formed in front of the vehicle and release it to the low-pressure area behind the vehicle, thereby significantly reducing the dust pollution during the vehicle's travel.

Description

Technical Field

[0001] The present invention relates to the field of environmental protection, and particularly to a dust suppression device for construction engineering vehicles. Background Art

[0002] Construction engineering vehicles are generally large in volume and load capacity. To meet the construction schedule, they drive fast on the road, and it is very easy to generate dust when passing by, seriously affecting the air quality of the places they pass through.

[0003] As is well known, the maximum driving resistance of a vehicle during driving is air resistance, and the magnitude of air resistance is closely related to the driving speed of the vehicle; air surrounds the vehicle body without dead angles. When the vehicle is driving, it continuously impacts and compresses the air in the front direction of the vehicle, forming a high-pressure area. The air impacted and compressed by the front of the vehicle will be pushed away to form an air current during the forward movement of the front of the vehicle, and quickly flow through the surrounding areas of the vehicle, and finally flow to the low-pressure area at the rear of the vehicle. The air flowing to the low-pressure area at the rear of the vehicle and other air filling the low-pressure area at the rear of the vehicle together form a "haze-like turbulent flow", which becomes the core factor of vehicle dust generation. The eddy current formed by the air at the rear end of the vehicle will pick up the dust on the road surface. As the vehicle moves forward, the dust will fly up behind it.

[0004] Some studies have shown that when the dust generated by vehicle driving is completely dry, it can be calculated according to the empirical formula: Q = 0.123×(V / 5)×(W / 6.8) 0.85 ×(P / 0.5) 0.75 where: Q is the dust generated by vehicle driving (kg / km·vehicle); V is the vehicle speed (km / hr); W is the vehicle load (t); P is the dust amount on the road surface (kg / m 2 ). Table 1 shows the dust amounts measured for a 10t truck passing through a 1km-long road surface under different road cleanliness levels and different driving speeds. It can be seen that under the condition of the same road cleanliness level, the faster the vehicle speed (i.e., the greater the air resistance), the greater the dust amount; and under the condition of the same vehicle speed, the more dust on the road surface, the greater the dust amount.

[0005] Table 1: Statistical table of dust amounts under different road cleanliness levels and different driving speeds

[0006]

[0007] Table 2 is a comparison table of vehicle driving dust amounts. The test conditions are that the vehicle driving distance is calculated as 100m, and the average number of empty and loaded vehicles dispatched is 44 times each; among them, the empty vehicle weighs about 10.0t, the loaded vehicle weighs about 30.0t, and they are all driving at a speed of 20km / h. The dust amounts under different road cleanliness conditions are as follows:

[0008] Table 2: Comparison table of vehicle driving dust amounts

[0009]

[0010] As can be seen from the above, there is a direct and close relationship between the vehicle driving speed, load and dust emission. When it is impossible to change the road surface cleanliness, vehicle driving speed and load, in order to reduce the dust emission during the driving of construction engineering vehicles, only by finding a way to reduce the "haze - type turbulence" formed by the vehicle. At present, there is no effective method for construction engineering vehicles with large load and high speed to reduce the dust pollution caused by the "haze - type turbulence" formed at the rear of the vehicle during driving. Summary of the Invention

[0011] The object of the present invention is to overcome the problems existing in the above - mentioned prior art, and provide a dust suppression device for construction engineering vehicles. During the driving process of construction engineering vehicles, it can suck, dissipate the energy and release the air in the high - pressure area formed in front of the vehicle to the low - pressure area behind the vehicle, so as to reduce the "haze - type turbulence" formed during the high - speed driving of the vehicle as much as possible, and significantly reduce the dust pollution caused during the driving of construction engineering vehicles.

[0012] The technical solution of the present invention is: a dust suppression device for construction engineering vehicles, comprising:

[0013] An air inlet body, fixed in front of the head of the construction engineering vehicle;

[0014] An air pump, fixed on the vehicle body of the construction engineering vehicle, including an air suction port and an air outlet. The air suction port is connected to the air flow inlet body through a front ventilation pipe;

[0015] An air release body, fixed behind the tail of the construction engineering vehicle, and connected to the air outlet of the air pump through a rear ventilation pipe;

[0016] A barometric pressure sensor, arranged in front of the air inlet body, for detecting the barometric pressure value in front of the air inlet body;

[0017] A controller, used to receive in real - time the barometric pressure value detected by the barometric pressure sensor, and compare the barometric pressure value with the standard atmospheric pressure value in real - time. When the barometric pressure value is greater than the standard atmospheric pressure value by a first set barometric pressure difference, the controller controls the air pump to accelerate the air extraction and exhaust. When the barometric pressure value is less than the standard atmospheric pressure value by a second set barometric pressure difference, the controller controls the air pump to slow down the air extraction and exhaust, so as to keep the barometric pressure value near the standard atmospheric pressure value.

[0018] The above - mentioned air inlet body is a hollow plate - like structure. The plate - like structure is parallel to the front end face of the head of the construction engineering vehicle, and a number of air inlet holes densely distributed on the front plate surface are opened on the front plate surface of the plate - like structure. A support rod is fixed on the front plate surface of the plate - like structure, and the barometric pressure sensor is arranged on the support rod; a gas output interface is arranged on the rear plate surface of the plate - like structure, and the gas output interface is connected to the front ventilation pipe.

[0019] The front plate surface of the above-mentioned plate body structure is set as an arc surface structure, and the distance between the middle part of the arc surface structure and the rear plate surface of the plate body structure is less than the distance between the edge of the arc surface structure and the rear plate surface of the plate body structure.

[0020] On the rear plate surface of the above-mentioned plate body structure, there are a plurality of first connectors fixed to the front of the construction engineering vehicle.

[0021] The above-mentioned air release body includes a plate-shaped housing. The left plate surface of the housing is fixed to the rear of the construction engineering vehicle through a plurality of second connectors. The left plate surface of the housing is parallel to the rear end surface of the rear of the construction engineering vehicle, and a gas input interface is provided on the left plate surface. The gas input interface is connected to the rear ventilation pipe. Inside the housing, there are a gas flow equalizing structure and a gas flow energy dissipation structure in sequence from left to right. The right plate surface of the housing is set as a mesh surface.

[0022] The above-mentioned gas flow equalizing structure is a plate body structure. The center of the plate body structure is opposite to the gas input interface. A plurality of ventilation holes are provided on the plate surface of the plate body structure. The distribution density of the ventilation holes gradually increases from the center of the plate body structure to the edge of the plate body structure.

[0023] The above-mentioned gas flow energy dissipation structure includes a frame body arranged between the gas flow equalizing structure and the mesh surface. At the left end of the frame body, a plurality of mutually parallel first inclined guide plates are arranged in sequence from top to bottom. At the right end of the frame body, a plurality of mutually parallel second inclined guide plates are arranged in sequence from top to bottom. The included angle between the first inclined guide plate and the second inclined guide plate is 90±10 degrees.

[0024] On the upper and lower plate surfaces of the above-mentioned first inclined guide plate and second inclined guide plate, there are corrugations for blocking the flow.

[0025] At the upper and lower ends on the right side of the above-mentioned housing, horizontal air flow baffles are fixed.

[0026] The above-mentioned controller controls the exhaust and intake speed of the air pump through the air pump controller; the controller is also signal-connected to an atmospheric pressure measurement sensor and a vehicle speed sensor; both the air pump and the controller are electrically connected to the power supply module.

[0027] Advantages of the present invention: The present invention provides a dust suppression device for construction engineering vehicles. During the progress of a construction engineering vehicle, it can suck and dissipate the energy of the air in the high-pressure area formed in front of the vehicle and then release it to the low-pressure area behind the vehicle, thereby reducing as much as possible the "haze-like turbulence" formed during the high-speed progress of the vehicle, and significantly reducing the dust pollution caused during the progress of the construction engineering vehicle. Specifically, the present invention realizes automatic control during the progress of the construction engineering vehicle through a controller. The controller receives in real time the air pressure value detected by the air pressure sensor in front of the vehicle head, and compares the air pressure value with the standard atmospheric pressure value in real time. When the detected air pressure value is greater than the standard atmospheric pressure value by a first set air pressure difference, it indicates that a high-pressure area is formed in front of the vehicle, then the controller will automatically control the air pump to accelerate air extraction and make the extracted gas dissipate energy through the air release body and then release it to the low-pressure area at the rear of the vehicle. When the detected air pressure value in front of the vehicle head is less than the standard atmospheric pressure value by a second set air pressure difference, the controller timely controls the air pump to slow down air extraction, so that the air pressure value in front of the vehicle head is maintained near the standard atmospheric pressure value, thereby automatically balancing the air pressure values before and after the construction engineering vehicle according to the wind pressure in front of the vehicle (positively correlated with the vehicle speed), and thus significantly reducing the "haze-like turbulence" formed during the high-speed progress of the vehicle and significantly reducing the dust pollution caused during the progress of the construction engineering vehicle. Through experimental verification, compared with the construction engineering vehicle without installing the device of the present invention, the construction engineering vehicle installed with the device of the present invention can reduce the dust generated during the progress by 50%-65%. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of the device of the present invention;

[0029] Figure 2 is a front view schematic diagram of the air introduction body of the present invention;

[0030] Figure 3 is a block diagram of the electrical system connection of the present invention;

[0031] Figure 4 is a schematic diagram of the present invention installed on a construction engineering vehicle. DETAILED DESCRIPTION OF THE INVENTION

[0032] The following combines the drawings to describe in detail a specific embodiment of the present invention, but it should be understood that the protection scope of the present invention is not limited by the specific embodiment.

[0033] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the technical solution of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0034] See Figures 1 - 4 , an embodiment of the present invention provides a dust suppression device for a construction engineering vehicle, including: an air inlet body 1, an air pump 6, an air release body 9, a pressure sensor 2, a controller 3, etc. The air inlet body 1 is fixed in front of the head of the construction engineering vehicle 19; the air pump 6 is fixed on the vehicle body of the construction engineering vehicle 19. The air pump 6 includes an air suction port and an air outlet. The air suction port is connected to the air flow inlet body 1 through a front air pipe 7; the air release body 9 is fixed behind the rear of the construction engineering vehicle 19 and is connected to the air outlet of the air pump 6 through a rear air pipe 13; the front air pipe 7 and the rear air pipe 13 are both fixed on the vehicle chassis or the lower side of the vehicle body through a plurality of air pipe connectors 12; the pressure sensor 2 is arranged in front of the air inlet body 1 and is used to detect the air pressure value in front of the air inlet body 1; See Figure 3, the controller 3 is used to receive in real time the air pressure value detected by the air pressure sensor 2, and compare the air pressure value with the standard atmospheric pressure value in real time. When the air pressure value is greater than the standard atmospheric pressure value by a first set air pressure difference, the controller 3 controls the air pump 6 to accelerate the air extraction and exhaust. When the air pressure value is less than the standard atmospheric pressure value by a second set air pressure difference, the controller 3 controls the air pump 6 to slow down the air extraction and exhaust, so that the air pressure value is maintained near the standard atmospheric pressure value. The controller 3, the air pump and other components that need to be powered are electrically connected to the power supply. The power supply can be configured separately for power supply or powered by the vehicle's battery. The present invention realizes automatic control during the driving process of a construction engineering vehicle through the controller. The controller receives in real time the air pressure value in front of the vehicle head detected by the air pressure sensor, and compares the air pressure value with the standard atmospheric pressure value in real time. When the detected air pressure value is greater than the standard atmospheric pressure value by a first set air pressure difference, it indicates that a high-pressure area is formed in front of the vehicle. Then the controller will automatically control the air pump to accelerate the air extraction and make the extracted gas pass through the air release body for energy dissipation and then be released to the low-pressure area at the rear of the vehicle. When the detected air pressure value in front of the vehicle head is less than the standard atmospheric pressure value by a second set air pressure difference, the controller timely controls the air pump to slow down the air extraction, so that the air pressure value in front of the vehicle head of the construction engineering vehicle is always maintained near the standard atmospheric pressure value during the driving process, so as to automatically balance the air pressure values in front of and behind the vehicle according to the wind pressure in front of the vehicle head (positively correlated with the vehicle speed), so as to significantly reduce the "haze-like turbulent flow" formed during the high-speed driving of the vehicle and significantly reduce the dust pollution caused during the driving process of the construction engineering vehicle.

[0035] Further, the air introduction body 1 is a hollow plate structure, the plate structure is parallel to the front end face of the vehicle head of the construction engineering vehicle 19, and a plurality of first connectors 10 fixed to the vehicle head of the construction engineering vehicle 19 are provided on the rear plate surface of the plate structure. Refer to Figure 2 , a plurality of air inlet holes 17 densely distributed on the front plate surface are opened on the front plate surface of the plate structure, a support rod 18 is fixed on the front plate surface of the plate structure, and the air pressure sensor 2 is arranged on the support rod 18; a gas output interface is provided on the rear plate surface of the plate structure, and the gas output interface is connected to the front ventilation pipe 7. Specifically, the front plate surface of the plate structure can be set as an arc surface structure, which is convenient for gathering and introducing the high-pressure air generated in front of the vehicle due to the vehicle driving speed. The distance between the middle of the arc surface structure and the rear plate surface of the plate structure is less than the distance between the edge of the arc surface structure and the rear plate surface of the plate structure, that is, the arc surface structure is a concave arc surface.

[0036] Furthermore, the air release body 9 includes a plate-shaped shell 9-1, the left plate surface of the shell 9-1 is fixed to the rear end of the construction engineering vehicle 19 through a plurality of second connecting members 14, and the left plate surface of the shell 9-1 is parallel to the rear end surface of the rear end of the construction engineering vehicle 19, and a gas input interface is provided in the middle of the left plate surface, and the gas input interface is connected to the rear ventilation pipe 13; the shell 9-1 is provided with an airflow equalization structure 9-2 and an airflow energy dissipation structure from left to right, and the right plate surface of the shell 9-1 is set as a mesh surface 9-6. Specifically, the airflow equalization structure 9-2 is a plate structure, the center of the plate structure is opposite to the gas input interface, and the plate structure is provided with a plurality of ventilation holes along its plate surface, and the distribution density of the ventilation holes gradually increases from the center of the plate structure to the edge of the plate structure, so that the airflow received by the gas input interface in the middle of the left plate surface can be equalized after passing through the plurality of ventilation holes on the plate structure. Further, the airflow energy dissipation structure includes a frame 9-3 arranged between the airflow equalizing structure 9-2 and the mesh surface 9-6, and the left end of the frame 9-3 is provided with a plurality of mutually parallel first inclined guide plates 9-4 from top to bottom, and the right end of the frame 9-3 is provided with a plurality of mutually parallel second inclined guide plates 9-5 from top to bottom, and the angle between the first inclined guide plate 9-4 and the second inclined guide plate 9-5 is 90±10 degrees. Specifically, the upper and lower plate surfaces of the first inclined guide plate 9-4 and the second inclined guide plate 9-5 are provided with wave patterns for blocking the flow, and at the same time, the plate surfaces of the first inclined guide plate 9-4 and the second inclined guide plate 9-5 are also densely covered with a number of air holes, which can also play the role of diverting part of the airflow and avoid the formation of a strong directional airflow as much as possible. In order to prevent the relatively weak airflow after the effect from disturbing the air near the ground and the air above the air release body 9, horizontal airflow baffles 9-7 are fixed at the upper and lower ends of the right side of the shell 9-1.

[0037] Furthermore, the controller 3 controls the exhaust speed of the air pump 6 through the air pump controller 4; the controller 3 is also signal-connected to an atmospheric pressure measuring sensor 15 and a vehicle speed sensor 11, wherein the atmospheric pressure measuring sensor 15 is arranged at the upper end of a support rod 16, the lower end of the support rod 16 is fixed to the top of the air introduction body 1, and the vehicle speed sensor 11 is arranged at the lower back of the air introduction body 1; the air pump 6 and the controller 3 are both electrically connected to the power module 5. In this embodiment, the actual atmospheric pressure value measured by the atmospheric pressure measuring sensor 15 can be used to replace the standard atmospheric pressure value in the aforementioned embodiment, which will have a better effect on balancing the front and rear air pressure values ​​of the vehicle; when the air pump is not working, the higher the air pressure (wind pressure) in front of the vehicle, the higher the vehicle speed, and the vehicle speed measured by the vehicle speed sensor 11 of this embodiment can be used as a reference for the air pressure in front of the vehicle when the air pump is not working.

[0038] In summary, the dust suppression device for construction engineering vehicles disclosed in the present invention can suck and dissipate the energy of the air in the high-pressure area formed in front of the vehicle during the driving process of the construction engineering vehicle and then release it to the low-pressure area behind the vehicle, so as to reduce the "haze-like turbulence" formed during the high-speed driving of the vehicle as much as possible, and can significantly reduce the dust pollution caused during the driving process of the construction engineering vehicle. Specifically, the present invention realizes automatic control during the driving process of the construction engineering vehicle through a controller. The controller receives in real time the air pressure value in front of the vehicle head detected by the air pressure sensor, and compares the air pressure value with the standard atmospheric pressure value in real time. When the detected air pressure value is greater than the standard atmospheric pressure value by a first set air pressure difference, it indicates that a high-pressure area is formed in front of the vehicle, then the controller will automatically control the air pump to accelerate air extraction and make the extracted gas dissipate energy through the air release body and then release it to the low-pressure area at the rear of the vehicle. When the detected air pressure value in front of the vehicle head is less than the standard atmospheric pressure value by a second set air pressure difference, the controller timely controls the air pump to slow down air extraction, so that the air pressure value in front of the vehicle head is maintained near the standard atmospheric pressure value, so as to automatically balance the air pressure values before and after the construction engineering vehicle according to the wind pressure in front of the vehicle (positively correlated with the vehicle speed), so as to significantly reduce the "haze-like turbulence" formed during the high-speed driving of the vehicle and significantly reduce the dust pollution caused during the driving process of the construction engineering vehicle. Through experimental verification, compared with the construction engineering vehicle without installing the device of the present invention, the construction engineering vehicle installed with the device of the present invention can reduce the dust generated during the driving process by 50%-65%.

[0039] The above discloses only several specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto, and any changes that can be thought of by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A dust suppression device for construction engineering vehicles, characterized in that, Comprising: An air inlet body (1), fixed in front of the head of a construction vehicle (19); An air pump (6), including an air extraction port and an air outlet, the air extraction port being connected to the air flow inlet body (1) through a front ventilation pipe (7); An air release body (9), fixed behind the tail of the construction vehicle (19), and connected to the air outlet of the air pump (6) through a rear ventilation pipe (13); A barometric pressure sensor (2), provided in front of the air inlet body (1); A controller (3), configured to compare the barometric pressure value detected by the barometric pressure sensor (2) with the standard atmospheric pressure value in real time, and control the air extraction and exhaust speed of the air pump (6) according to the difference between the two barometric pressure values, so as to maintain the barometric pressure value near the standard atmospheric pressure value; The controller (3) controls the air extraction and exhaust speed of the air pump (6) through an air pump controller (4); The controller (3) is also signal-connected to an atmospheric barometric pressure measurement sensor (15) and a vehicle speed sensor (11); both the air pump (6) and the controller (3) are electrically connected to a power supply module (5); using the actual atmospheric pressure value measured by the atmospheric barometric pressure measurement sensor (15) to replace the standard atmospheric pressure value will have a better effect on balancing the barometric pressure values at the front and rear of the vehicle; The air release body (9) includes a plate-shaped housing (9-1), the left plate surface of the housing (9-1) is fixed to the tail of the construction vehicle (19) through a plurality of second connectors (14), and the left plate surface of the housing (9-1) is parallel to the rear end surface of the tail of the construction vehicle (19), and a gas input interface is provided on the left plate surface, and the gas input interface is connected to the rear ventilation pipe (13); an air flow equalizing structure (9-2) and an air flow energy dissipation structure are sequentially arranged in the housing (9-1) from left to right, and the right plate surface of the housing (9-1) is set as a mesh surface (9-6); the air flow equalizing structure (9-2) is a plate structure, the center of the plate structure is opposite to the gas input interface, and a plurality of ventilation holes are formed in the plate surface of the plate structure, and the distribution density of the ventilation holes gradually increases from the center of the plate structure to the edge of the plate structure; the air flow energy dissipation structure includes a frame body (9-3) arranged between the air flow equalizing structure (9-2) and the mesh surface (9-6), a plurality of mutually parallel first inclined guide plates (9-4) are sequentially arranged from top to bottom at the left end of the frame body (9-3), a plurality of mutually parallel second inclined guide plates (9-5) are sequentially arranged from top to bottom at the right end of the frame body (9-3), and the included angle between the first inclined guide plate (9-4) and the second inclined guide plate (9-5) is 90±10 degrees; corrugations for blocking the flow are provided on the upper and lower plate surfaces of the first inclined guide plate (9-4) and the second inclined guide plate (9-5); horizontal air flow baffles (9-7) are fixed to both the upper and lower ends on the right side of the housing (9-1).

2. The dust suppression device for a construction engineering vehicle according to claim 1, characterized in that, The air inlet body (1) is a hollow plate structure, which is parallel to the front end face of the head of the construction engineering vehicle (19). A number of air inlet holes (17) densely distributed on the front plate surface are provided on the front plate surface of the plate structure. A support rod (18) is fixed on the front plate surface of the plate structure, and the air pressure sensor (2) is arranged on the support rod (18); A gas output interface is provided on the rear plate surface of the plate structure, and the gas output interface is connected to the front ventilation pipe (7).

3. The dust suppression device for a construction engineering vehicle according to claim 2, wherein The front plate surface of the plate structure is set as an arc surface structure, and the distance between the middle part of the arc surface structure and the rear plate surface of the plate structure is less than the distance between the edge of the arc surface structure and the rear plate surface of the plate structure.

4. The dust suppression device for a construction engineering vehicle according to claim 3, wherein, A plurality of first connectors (10) fixed to the head of the construction engineering vehicle (19) are provided on the rear plate surface of the plate structure.

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